/[pcre]/code/trunk/pcre_dfa_exec.c
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revision 85 by nigel, Sat Feb 24 21:41:13 2007 UTC revision 518 by ph10, Tue May 18 15:47:01 2010 UTC
# Line 3  Line 3 
3  *************************************************/  *************************************************/
4    
5  /* PCRE is a library of functions to support regular expressions whose syntax  /* PCRE is a library of functions to support regular expressions whose syntax
6  and semantics are as close as possible to those of the Perl 5 language.  and semantics are as close as possible to those of the Perl 5 language (but see
7    below for why this module is different).
8    
9                         Written by Philip Hazel                         Written by Philip Hazel
10             Copyright (c) 1997-2005 University of Cambridge             Copyright (c) 1997-2010 University of Cambridge
11    
12  -----------------------------------------------------------------------------  -----------------------------------------------------------------------------
13  Redistribution and use in source and binary forms, with or without  Redistribution and use in source and binary forms, with or without
# Line 39  POSSIBILITY OF SUCH DAMAGE. Line 40  POSSIBILITY OF SUCH DAMAGE.
40    
41    
42  /* This module contains the external function pcre_dfa_exec(), which is an  /* This module contains the external function pcre_dfa_exec(), which is an
43  alternative matching function that uses a DFA algorithm. This is NOT Perl-  alternative matching function that uses a sort of DFA algorithm (not a true
44  compatible, but it has advantages in certain applications. */  FSM). This is NOT Perl- compatible, but it has advantages in certain
45    applications. */
46    
47    
48    /* NOTE ABOUT PERFORMANCE: A user of this function sent some code that improved
49    the performance of his patterns greatly. I could not use it as it stood, as it
50    was not thread safe, and made assumptions about pattern sizes. Also, it caused
51    test 7 to loop, and test 9 to crash with a segfault.
52    
53    The issue is the check for duplicate states, which is done by a simple linear
54    search up the state list. (Grep for "duplicate" below to find the code.) For
55    many patterns, there will never be many states active at one time, so a simple
56    linear search is fine. In patterns that have many active states, it might be a
57    bottleneck. The suggested code used an indexing scheme to remember which states
58    had previously been used for each character, and avoided the linear search when
59    it knew there was no chance of a duplicate. This was implemented when adding
60    states to the state lists.
61    
62    I wrote some thread-safe, not-limited code to try something similar at the time
63    of checking for duplicates (instead of when adding states), using index vectors
64    on the stack. It did give a 13% improvement with one specially constructed
65    pattern for certain subject strings, but on other strings and on many of the
66    simpler patterns in the test suite it did worse. The major problem, I think,
67    was the extra time to initialize the index. This had to be done for each call
68    of internal_dfa_exec(). (The supplied patch used a static vector, initialized
69    only once - I suspect this was the cause of the problems with the tests.)
70    
71    Overall, I concluded that the gains in some cases did not outweigh the losses
72    in others, so I abandoned this code. */
73    
74    
75    
76    #ifdef HAVE_CONFIG_H
77    #include "config.h"
78    #endif
79    
80    #define NLBLOCK md             /* Block containing newline information */
81    #define PSSTART start_subject  /* Field containing processed string start */
82    #define PSEND   end_subject    /* Field containing processed string end */
83    
84  #include "pcre_internal.h"  #include "pcre_internal.h"
85    
# Line 51  compatible, but it has advantages in cer Line 89  compatible, but it has advantages in cer
89  #define SP "                   "  #define SP "                   "
90    
91    
   
92  /*************************************************  /*************************************************
93  *      Code parameters and static tables         *  *      Code parameters and static tables         *
94  *************************************************/  *************************************************/
95    
96  /* These are offsets that are used to turn the OP_TYPESTAR and friends opcodes  /* These are offsets that are used to turn the OP_TYPESTAR and friends opcodes
97  into others, under special conditions. A gap of 10 between the blocks should be  into others, under special conditions. A gap of 20 between the blocks should be
98  enough. */  enough. The resulting opcodes don't have to be less than 256 because they are
99    never stored, so we push them well clear of the normal opcodes. */
100  #define OP_PROP_EXTRA    (EXTRACT_BASIC_MAX+1)  
101  #define OP_EXTUNI_EXTRA  (EXTRACT_BASIC_MAX+11)  #define OP_PROP_EXTRA       300
102    #define OP_EXTUNI_EXTRA     320
103    #define OP_ANYNL_EXTRA      340
104    #define OP_HSPACE_EXTRA     360
105    #define OP_VSPACE_EXTRA     380
106    
107    
108  /* This table identifies those opcodes that are followed immediately by a  /* This table identifies those opcodes that are followed immediately by a
109  character that is to be tested in some way. This makes is possible to  character that is to be tested in some way. This makes it possible to
110  centralize the loading of these characters. In the case of Type * etc, the  centralize the loading of these characters. In the case of Type * etc, the
111  "character" is the opcode for \D, \d, \S, \s, \W, or \w, which will always be a  "character" is the opcode for \D, \d, \S, \s, \W, or \w, which will always be a
112  small value. */  small value. Non-zero values in the table are the offsets from the opcode where
113    the character is to be found. ***NOTE*** If the start of this table is
114    modified, the three tables that follow must also be modified. */
115    
116  static uschar coptable[] = {  static const uschar coptable[] = {
117    0,                             /* End                                    */    0,                             /* End                                    */
118    0, 0, 0, 0, 0, 0, 0, 0, 0, 0,  /* \A, \G, \B, \b, \D, \d, \S, \s, \W, \w */    0, 0, 0, 0, 0,                 /* \A, \G, \K, \B, \b                     */
119    0, 0,                          /* Any, Anybyte                           */    0, 0, 0, 0, 0, 0,              /* \D, \d, \S, \s, \W, \w                 */
120    0, 0, 0,                       /* NOTPROP, PROP, EXTUNI                  */    0, 0, 0,                       /* Any, AllAny, Anybyte                   */
121      0, 0,                          /* \P, \p                                 */
122      0, 0, 0, 0, 0,                 /* \R, \H, \h, \V, \v                     */
123      0,                             /* \X                                     */
124    0, 0, 0, 0, 0,                 /* \Z, \z, Opt, ^, $                      */    0, 0, 0, 0, 0,                 /* \Z, \z, Opt, ^, $                      */
125    1,                             /* Char                                   */    1,                             /* Char                                   */
126    1,                             /* Charnc                                 */    1,                             /* Charnc                                 */
# Line 82  static uschar coptable[] = { Line 128  static uschar coptable[] = {
128    /* Positive single-char repeats                                          */    /* Positive single-char repeats                                          */
129    1, 1, 1, 1, 1, 1,              /* *, *?, +, +?, ?, ??                    */    1, 1, 1, 1, 1, 1,              /* *, *?, +, +?, ?, ??                    */
130    3, 3, 3,                       /* upto, minupto, exact                   */    3, 3, 3,                       /* upto, minupto, exact                   */
131      1, 1, 1, 3,                    /* *+, ++, ?+, upto+                      */
132    /* Negative single-char repeats - only for chars < 256                   */    /* Negative single-char repeats - only for chars < 256                   */
133    1, 1, 1, 1, 1, 1,              /* NOT *, *?, +, +?, ?, ??                */    1, 1, 1, 1, 1, 1,              /* NOT *, *?, +, +?, ?, ??                */
134    3, 3, 3,                       /* NOT upto, minupto, exact               */    3, 3, 3,                       /* NOT upto, minupto, exact               */
135      1, 1, 1, 3,                    /* NOT *+, ++, ?+, updo+                  */
136    /* Positive type repeats                                                 */    /* Positive type repeats                                                 */
137    1, 1, 1, 1, 1, 1,              /* Type *, *?, +, +?, ?, ??               */    1, 1, 1, 1, 1, 1,              /* Type *, *?, +, +?, ?, ??               */
138    3, 3, 3,                       /* Type upto, minupto, exact              */    3, 3, 3,                       /* Type upto, minupto, exact              */
139      1, 1, 1, 3,                    /* Type *+, ++, ?+, upto+                 */
140    /* Character class & ref repeats                                         */    /* Character class & ref repeats                                         */
141    0, 0, 0, 0, 0, 0,              /* *, *?, +, +?, ?, ??                    */    0, 0, 0, 0, 0, 0,              /* *, *?, +, +?, ?, ??                    */
142    0, 0,                          /* CRRANGE, CRMINRANGE                    */    0, 0,                          /* CRRANGE, CRMINRANGE                    */
# Line 106  static uschar coptable[] = { Line 155  static uschar coptable[] = {
155    0,                             /* Assert behind                          */    0,                             /* Assert behind                          */
156    0,                             /* Assert behind not                      */    0,                             /* Assert behind not                      */
157    0,                             /* Reverse                                */    0,                             /* Reverse                                */
158    0,                             /* Once                                   */    0, 0, 0, 0,                    /* ONCE, BRA, CBRA, COND                  */
159    0,                             /* COND                                   */    0, 0, 0,                       /* SBRA, SCBRA, SCOND                     */
160    0,                             /* CREF                                   */    0, 0,                          /* CREF, NCREF                            */
161      0, 0,                          /* RREF, NRREF                            */
162      0,                             /* DEF                                    */
163      0, 0,                          /* BRAZERO, BRAMINZERO                    */
164      0, 0, 0,                       /* MARK, PRUNE, PRUNE_ARG,                */
165      0, 0, 0, 0,                    /* SKIP, SKIP_ARG, THEN, THEN_ARG,        */
166      0, 0, 0, 0, 0                  /* COMMIT, FAIL, ACCEPT, CLOSE, SKIPZERO  */
167    };
168    
169    /* This table identifies those opcodes that inspect a character. It is used to
170    remember the fact that a character could have been inspected when the end of
171    the subject is reached. ***NOTE*** If the start of this table is modified, the
172    two tables that follow must also be modified. */
173    
174    static const uschar poptable[] = {
175      0,                             /* End                                    */
176      0, 0, 0, 1, 1,                 /* \A, \G, \K, \B, \b                     */
177      1, 1, 1, 1, 1, 1,              /* \D, \d, \S, \s, \W, \w                 */
178      1, 1, 1,                       /* Any, AllAny, Anybyte                   */
179      1, 1,                          /* \P, \p                                 */
180      1, 1, 1, 1, 1,                 /* \R, \H, \h, \V, \v                     */
181      1,                             /* \X                                     */
182      0, 0, 0, 0, 0,                 /* \Z, \z, Opt, ^, $                      */
183      1,                             /* Char                                   */
184      1,                             /* Charnc                                 */
185      1,                             /* not                                    */
186      /* Positive single-char repeats                                          */
187      1, 1, 1, 1, 1, 1,              /* *, *?, +, +?, ?, ??                    */
188      1, 1, 1,                       /* upto, minupto, exact                   */
189      1, 1, 1, 1,                    /* *+, ++, ?+, upto+                      */
190      /* Negative single-char repeats - only for chars < 256                   */
191      1, 1, 1, 1, 1, 1,              /* NOT *, *?, +, +?, ?, ??                */
192      1, 1, 1,                       /* NOT upto, minupto, exact               */
193      1, 1, 1, 1,                    /* NOT *+, ++, ?+, upto+                  */
194      /* Positive type repeats                                                 */
195      1, 1, 1, 1, 1, 1,              /* Type *, *?, +, +?, ?, ??               */
196      1, 1, 1,                       /* Type upto, minupto, exact              */
197      1, 1, 1, 1,                    /* Type *+, ++, ?+, upto+                 */
198      /* Character class & ref repeats                                         */
199      1, 1, 1, 1, 1, 1,              /* *, *?, +, +?, ?, ??                    */
200      1, 1,                          /* CRRANGE, CRMINRANGE                    */
201      1,                             /* CLASS                                  */
202      1,                             /* NCLASS                                 */
203      1,                             /* XCLASS - variable length               */
204      0,                             /* REF                                    */
205      0,                             /* RECURSE                                */
206      0,                             /* CALLOUT                                */
207      0,                             /* Alt                                    */
208      0,                             /* Ket                                    */
209      0,                             /* KetRmax                                */
210      0,                             /* KetRmin                                */
211      0,                             /* Assert                                 */
212      0,                             /* Assert not                             */
213      0,                             /* Assert behind                          */
214      0,                             /* Assert behind not                      */
215      0,                             /* Reverse                                */
216      0, 0, 0, 0,                    /* ONCE, BRA, CBRA, COND                  */
217      0, 0, 0,                       /* SBRA, SCBRA, SCOND                     */
218      0, 0,                          /* CREF, NCREF                            */
219      0, 0,                          /* RREF, NRREF                            */
220      0,                             /* DEF                                    */
221    0, 0,                          /* BRAZERO, BRAMINZERO                    */    0, 0,                          /* BRAZERO, BRAMINZERO                    */
222    0,                             /* BRANUMBER                              */    0, 0, 0,                       /* MARK, PRUNE, PRUNE_ARG,                */
223    0                              /* BRA                                    */    0, 0, 0, 0,                    /* SKIP, SKIP_ARG, THEN, THEN_ARG,        */
224      0, 0, 0, 0, 0                  /* COMMIT, FAIL, ACCEPT, CLOSE, SKIPZERO  */
225  };  };
226    
227  /* These 2 tables allow for compact code for testing for \D, \d, \S, \s, \W,  /* These 2 tables allow for compact code for testing for \D, \d, \S, \s, \W,
228  and \w */  and \w */
229    
230  static uschar toptable1[] = {  static const uschar toptable1[] = {
231    0, 0, 0, 0, 0,    0, 0, 0, 0, 0, 0,
232    ctype_digit, ctype_digit,    ctype_digit, ctype_digit,
233    ctype_space, ctype_space,    ctype_space, ctype_space,
234    ctype_word,  ctype_word,    ctype_word,  ctype_word,
235    0                               /* OP_ANY */    0, 0                            /* OP_ANY, OP_ALLANY */
236  };  };
237    
238  static uschar toptable2[] = {  static const uschar toptable2[] = {
239    0, 0, 0, 0, 0,    0, 0, 0, 0, 0, 0,
240    ctype_digit, 0,    ctype_digit, 0,
241    ctype_space, 0,    ctype_space, 0,
242    ctype_word,  0,    ctype_word,  0,
243    1                               /* OP_ANY */    1, 1                            /* OP_ANY, OP_ALLANY */
244  };  };
245    
246    
# Line 149  typedef struct stateblock { Line 259  typedef struct stateblock {
259  #define INTS_PER_STATEBLOCK  (sizeof(stateblock)/sizeof(int))  #define INTS_PER_STATEBLOCK  (sizeof(stateblock)/sizeof(int))
260    
261    
262  #ifdef DEBUG  #ifdef PCRE_DEBUG
263  /*************************************************  /*************************************************
264  *             Print character string             *  *             Print character string             *
265  *************************************************/  *************************************************/
# Line 202  Arguments: Line 312  Arguments:
312    rlevel            function call recursion level    rlevel            function call recursion level
313    recursing         regex recursive call level    recursing         regex recursive call level
314    
315  Returns:            > 0 =>  Returns:            > 0 => number of match offset pairs placed in offsets
316                      = 0 =>                      = 0 => offsets overflowed; longest matches are present
317                       -1 => failed to match                       -1 => failed to match
318                     < -1 => some kind of unexpected problem                     < -1 => some kind of unexpected problem
319    
# Line 277  stateblock *next_active_state, *next_new Line 387  stateblock *next_active_state, *next_new
387    
388  const uschar *ctypes, *lcc, *fcc;  const uschar *ctypes, *lcc, *fcc;
389  const uschar *ptr;  const uschar *ptr;
390  const uschar *end_code;  const uschar *end_code, *first_op;
391    
392  int active_count, new_count, match_count;  int active_count, new_count, match_count;
393    
# Line 288  const uschar *start_subject = md->start_ Line 398  const uschar *start_subject = md->start_
398  const uschar *end_subject = md->end_subject;  const uschar *end_subject = md->end_subject;
399  const uschar *start_code = md->start_code;  const uschar *start_code = md->start_code;
400    
401    #ifdef SUPPORT_UTF8
402  BOOL utf8 = (md->poptions & PCRE_UTF8) != 0;  BOOL utf8 = (md->poptions & PCRE_UTF8) != 0;
403    #else
404    BOOL utf8 = FALSE;
405    #endif
406    
407  rlevel++;  rlevel++;
408  offsetcount &= (-2);  offsetcount &= (-2);
# Line 311  active_states = (stateblock *)(workspace Line 425  active_states = (stateblock *)(workspace
425  next_new_state = new_states = active_states + wscount;  next_new_state = new_states = active_states + wscount;
426  new_count = 0;  new_count = 0;
427    
428    first_op = this_start_code + 1 + LINK_SIZE +
429      ((*this_start_code == OP_CBRA || *this_start_code == OP_SCBRA)? 2:0);
430    
431  /* The first thing in any (sub) pattern is a bracket of some sort. Push all  /* The first thing in any (sub) pattern is a bracket of some sort. Push all
432  the alternative states onto the list, and find out where the end is. This  the alternative states onto the list, and find out where the end is. This
433  makes is possible to use this function recursively, when we want to stop at a  makes is possible to use this function recursively, when we want to stop at a
# Line 320  If the first opcode in the first alterna Line 437  If the first opcode in the first alterna
437  a backward assertion. In that case, we have to find out the maximum amount to  a backward assertion. In that case, we have to find out the maximum amount to
438  move back, and set up each alternative appropriately. */  move back, and set up each alternative appropriately. */
439    
440  if (this_start_code[1+LINK_SIZE] == OP_REVERSE)  if (*first_op == OP_REVERSE)
441    {    {
442    int max_back = 0;    int max_back = 0;
443    int gone_back;    int gone_back;
# Line 362  if (this_start_code[1+LINK_SIZE] == OP_R Line 479  if (this_start_code[1+LINK_SIZE] == OP_R
479      current_subject -= gone_back;      current_subject -= gone_back;
480      }      }
481    
482      /* Save the earliest consulted character */
483    
484      if (current_subject < md->start_used_ptr)
485        md->start_used_ptr = current_subject;
486    
487    /* Now we can process the individual branches. */    /* Now we can process the individual branches. */
488    
489    end_code = this_start_code;    end_code = this_start_code;
# Line 402  else Line 524  else
524    
525    else    else
526      {      {
527        int length = 1 + LINK_SIZE +
528          ((*this_start_code == OP_CBRA || *this_start_code == OP_SCBRA)? 2:0);
529      do      do
530        {        {
531        ADD_NEW(end_code - start_code + 1 + LINK_SIZE, 0);        ADD_NEW(end_code - start_code + length, 0);
532        end_code += GET(end_code, 1);        end_code += GET(end_code, 1);
533          length = 1 + LINK_SIZE;
534        }        }
535      while (*end_code == OP_ALT);      while (*end_code == OP_ALT);
536      }      }
# Line 421  ptr = current_subject; Line 546  ptr = current_subject;
546  for (;;)  for (;;)
547    {    {
548    int i, j;    int i, j;
549    int c, d, clen, dlen;    int clen, dlen;
550      unsigned int c, d;
551      int forced_fail = 0;
552      BOOL could_continue = FALSE;
553    
554    /* Make the new state list into the active state list and empty the    /* Make the new state list into the active state list and empty the
555    new state list. */    new state list. */
# Line 435  for (;;) Line 563  for (;;)
563    workspace[0] ^= 1;              /* Remember for the restarting feature */    workspace[0] ^= 1;              /* Remember for the restarting feature */
564    workspace[1] = active_count;    workspace[1] = active_count;
565    
566  #ifdef DEBUG  #ifdef PCRE_DEBUG
567    printf("%.*sNext character: rest of subject = \"", rlevel*2-2, SP);    printf("%.*sNext character: rest of subject = \"", rlevel*2-2, SP);
568    pchars((uschar *)ptr, strlen((char *)ptr), stdout);    pchars((uschar *)ptr, strlen((char *)ptr), stdout);
569    printf("\"\n");    printf("\"\n");
# Line 457  for (;;) Line 585  for (;;)
585    
586    if (ptr < end_subject)    if (ptr < end_subject)
587      {      {
588      clen = 1;      clen = 1;        /* Number of bytes in the character */
589  #ifdef SUPPORT_UTF8  #ifdef SUPPORT_UTF8
590      if (utf8) { GETCHARLEN(c, ptr, clen); } else      if (utf8) { GETCHARLEN(c, ptr, clen); } else
591  #endif  /* SUPPORT_UTF8 */  #endif  /* SUPPORT_UTF8 */
# Line 465  for (;;) Line 593  for (;;)
593      }      }
594    else    else
595      {      {
596      clen = 0;    /* At end subject */      clen = 0;        /* This indicates the end of the subject */
597      c = -1;      c = NOTACHAR;    /* This value should never actually be used */
598      }      }
599    
600    /* Scan up the active states and act on each one. The result of an action    /* Scan up the active states and act on each one. The result of an action
# Line 479  for (;;) Line 607  for (;;)
607      stateblock *current_state = active_states + i;      stateblock *current_state = active_states + i;
608      const uschar *code;      const uschar *code;
609      int state_offset = current_state->offset;      int state_offset = current_state->offset;
610      int count, codevalue;      int count, codevalue, rrc;
     int chartype, othercase;  
611    
612  #ifdef DEBUG  #ifdef PCRE_DEBUG
613      printf ("%.*sProcessing state %d c=", rlevel*2-2, SP, state_offset);      printf ("%.*sProcessing state %d c=", rlevel*2-2, SP, state_offset);
614      if (c < 0) printf("-1\n");      if (clen == 0) printf("EOL\n");
615        else if (c > 32 && c < 127) printf("'%c'\n", c);        else if (c > 32 && c < 127) printf("'%c'\n", c);
616          else printf("0x%02x\n", c);          else printf("0x%02x\n", c);
617  #endif  #endif
# Line 512  for (;;) Line 639  for (;;)
639          }          }
640        }        }
641    
642      /* Check for a duplicate state with the same count, and skip if found. */      /* Check for a duplicate state with the same count, and skip if found.
643        See the note at the head of this module about the possibility of improving
644        performance here. */
645    
646      for (j = 0; j < i; j++)      for (j = 0; j < i; j++)
647        {        {
# Line 528  for (;;) Line 657  for (;;)
657    
658      code = start_code + state_offset;      code = start_code + state_offset;
659      codevalue = *code;      codevalue = *code;
660      if (codevalue >= OP_BRA) codevalue = OP_BRA; /* All brackets are equal */  
661        /* If this opcode inspects a character, but we are at the end of the
662        subject, remember the fact for use when testing for a partial match. */
663    
664        if (clen == 0 && poptable[codevalue] != 0)
665          could_continue = TRUE;
666    
667      /* If this opcode is followed by an inline character, load it. It is      /* If this opcode is followed by an inline character, load it. It is
668      tempting to test for the presence of a subject character here, but that      tempting to test for the presence of a subject character here, but that
# Line 536  for (;;) Line 670  for (;;)
670      permitted.      permitted.
671    
672      We also use this mechanism for opcodes such as OP_TYPEPLUS that take an      We also use this mechanism for opcodes such as OP_TYPEPLUS that take an
673      argument that is not a data character - but is always one byte long.      argument that is not a data character - but is always one byte long. We
674      Unfortunately, we have to take special action to deal with  \P, \p, and      have to take special action to deal with  \P, \p, \H, \h, \V, \v and \X in
675      \X in this case. To keep the other cases fast, convert these ones to new      this case. To keep the other cases fast, convert these ones to new opcodes.
676      opcodes. */      */
677    
678      if (coptable[codevalue] > 0)      if (coptable[codevalue] > 0)
679        {        {
# Line 550  for (;;) Line 684  for (;;)
684        d = code[coptable[codevalue]];        d = code[coptable[codevalue]];
685        if (codevalue >= OP_TYPESTAR)        if (codevalue >= OP_TYPESTAR)
686          {          {
687          if (d == OP_ANYBYTE) return PCRE_ERROR_DFA_UITEM;          switch(d)
688          if (d >= OP_NOTPROP)            {
689            codevalue += (d == OP_EXTUNI)? OP_EXTUNI_EXTRA : OP_PROP_EXTRA;            case OP_ANYBYTE: return PCRE_ERROR_DFA_UITEM;
690              case OP_NOTPROP:
691              case OP_PROP: codevalue += OP_PROP_EXTRA; break;
692              case OP_ANYNL: codevalue += OP_ANYNL_EXTRA; break;
693              case OP_EXTUNI: codevalue += OP_EXTUNI_EXTRA; break;
694              case OP_NOT_HSPACE:
695              case OP_HSPACE: codevalue += OP_HSPACE_EXTRA; break;
696              case OP_NOT_VSPACE:
697              case OP_VSPACE: codevalue += OP_VSPACE_EXTRA; break;
698              default: break;
699              }
700          }          }
701        }        }
702      else      else
703        {        {
704        dlen = 0;         /* Not strictly necessary, but compilers moan */        dlen = 0;         /* Not strictly necessary, but compilers moan */
705        d = -1;           /* if these variables are not set. */        d = NOTACHAR;     /* if these variables are not set. */
706        }        }
707    
708    
# Line 566  for (;;) Line 710  for (;;)
710    
711      switch (codevalue)      switch (codevalue)
712        {        {
713    /* ========================================================================== */
714          /* These cases are never obeyed. This is a fudge that causes a compile-
715          time error if the vectors coptable or poptable, which are indexed by
716          opcode, are not the correct length. It seems to be the only way to do
717          such a check at compile time, as the sizeof() operator does not work
718          in the C preprocessor. */
719    
720          case OP_TABLE_LENGTH:
721          case OP_TABLE_LENGTH +
722            ((sizeof(coptable) == OP_TABLE_LENGTH) &&
723             (sizeof(poptable) == OP_TABLE_LENGTH)):
724          break;
725    
726  /* ========================================================================== */  /* ========================================================================== */
727        /* Reached a closing bracket. If not at the end of the pattern, carry        /* Reached a closing bracket. If not at the end of the pattern, carry
728        on with the next opcode. Otherwise, unless we have an empty string and        on with the next opcode. Otherwise, unless we have an empty string and
729        PCRE_NOTEMPTY is set, save the match data, shifting up all previous        PCRE_NOTEMPTY is set, or PCRE_NOTEMPTY_ATSTART is set and we are at the
730          start of the subject, save the match data, shifting up all previous
731        matches so we always have the longest first. */        matches so we always have the longest first. */
732    
733        case OP_KET:        case OP_KET:
# Line 584  for (;;) Line 741  for (;;)
741            ADD_ACTIVE(state_offset - GET(code, 1), 0);            ADD_ACTIVE(state_offset - GET(code, 1), 0);
742            }            }
743          }          }
744        else if (ptr > current_subject || (md->moptions & PCRE_NOTEMPTY) == 0)        else
745          {          {
746          if (match_count < 0) match_count = (offsetcount >= 2)? 1 : 0;          if (ptr > current_subject ||
747            else if (match_count > 0 && ++match_count * 2 >= offsetcount)              ((md->moptions & PCRE_NOTEMPTY) == 0 &&
748              match_count = 0;                ((md->moptions & PCRE_NOTEMPTY_ATSTART) == 0 ||
749          count = ((match_count == 0)? offsetcount : match_count * 2) - 2;                  current_subject > start_subject + md->start_offset)))
750          if (count > 0) memmove(offsets + 2, offsets, count * sizeof(int));            {
751          if (offsetcount >= 2)            if (match_count < 0) match_count = (offsetcount >= 2)? 1 : 0;
752            {              else if (match_count > 0 && ++match_count * 2 >= offsetcount)
753            offsets[0] = current_subject - start_subject;                match_count = 0;
754            offsets[1] = ptr - start_subject;            count = ((match_count == 0)? offsetcount : match_count * 2) - 2;
755            DPRINTF(("%.*sSet matched string = \"%.*s\"\n", rlevel*2-2, SP,            if (count > 0) memmove(offsets + 2, offsets, count * sizeof(int));
756              offsets[1] - offsets[0], current_subject));            if (offsetcount >= 2)
757            }              {
758          if ((md->moptions & PCRE_DFA_SHORTEST) != 0)              offsets[0] = current_subject - start_subject;
759            {              offsets[1] = ptr - start_subject;
760            DPRINTF(("%.*sEnd of internal_dfa_exec %d: returning %d\n"              DPRINTF(("%.*sSet matched string = \"%.*s\"\n", rlevel*2-2, SP,
761              "%.*s---------------------\n\n", rlevel*2-2, SP, rlevel,                offsets[1] - offsets[0], current_subject));
762              match_count, rlevel*2-2, SP));              }
763            return match_count;            if ((md->moptions & PCRE_DFA_SHORTEST) != 0)
764                {
765                DPRINTF(("%.*sEnd of internal_dfa_exec %d: returning %d\n"
766                  "%.*s---------------------\n\n", rlevel*2-2, SP, rlevel,
767                  match_count, rlevel*2-2, SP));
768                return match_count;
769                }
770            }            }
771          }          }
772        break;        break;
# Line 620  for (;;) Line 783  for (;;)
783    
784        /*-----------------------------------------------------------------*/        /*-----------------------------------------------------------------*/
785        case OP_BRA:        case OP_BRA:
786          case OP_SBRA:
787        do        do
788          {          {
789          ADD_ACTIVE(code - start_code + 1 + LINK_SIZE, 0);          ADD_ACTIVE(code - start_code + 1 + LINK_SIZE, 0);
# Line 629  for (;;) Line 793  for (;;)
793        break;        break;
794    
795        /*-----------------------------------------------------------------*/        /*-----------------------------------------------------------------*/
796          case OP_CBRA:
797          case OP_SCBRA:
798          ADD_ACTIVE(code - start_code + 3 + LINK_SIZE,  0);
799          code += GET(code, 1);
800          while (*code == OP_ALT)
801            {
802            ADD_ACTIVE(code - start_code + 1 + LINK_SIZE,  0);
803            code += GET(code, 1);
804            }
805          break;
806    
807          /*-----------------------------------------------------------------*/
808        case OP_BRAZERO:        case OP_BRAZERO:
809        case OP_BRAMINZERO:        case OP_BRAMINZERO:
810        ADD_ACTIVE(state_offset + 1, 0);        ADD_ACTIVE(state_offset + 1, 0);
# Line 638  for (;;) Line 814  for (;;)
814        break;        break;
815    
816        /*-----------------------------------------------------------------*/        /*-----------------------------------------------------------------*/
817        case OP_BRANUMBER:        case OP_SKIPZERO:
818        ADD_ACTIVE(state_offset + 1 + LINK_SIZE, 0);        code += 1 + GET(code, 2);
819          while (*code == OP_ALT) code += GET(code, 1);
820          ADD_ACTIVE(code - start_code + 1 + LINK_SIZE, 0);
821        break;        break;
822    
823        /*-----------------------------------------------------------------*/        /*-----------------------------------------------------------------*/
824        case OP_CIRC:        case OP_CIRC:
825        if ((ptr == start_subject && (md->moptions & PCRE_NOTBOL) == 0) ||        if ((ptr == start_subject && (md->moptions & PCRE_NOTBOL) == 0) ||
826            ((ims & PCRE_MULTILINE) != 0 && ptr[-1] == NEWLINE))            ((ims & PCRE_MULTILINE) != 0 &&
827                ptr != end_subject &&
828                WAS_NEWLINE(ptr)))
829          { ADD_ACTIVE(state_offset + 1, 0); }          { ADD_ACTIVE(state_offset + 1, 0); }
830        break;        break;
831    
# Line 679  for (;;) Line 859  for (;;)
859    
860        /*-----------------------------------------------------------------*/        /*-----------------------------------------------------------------*/
861        case OP_ANY:        case OP_ANY:
862        if (clen > 0 && (c != NEWLINE || (ims & PCRE_DOTALL) != 0))        if (clen > 0 && !IS_NEWLINE(ptr))
863            { ADD_NEW(state_offset + 1, 0); }
864          break;
865    
866          /*-----------------------------------------------------------------*/
867          case OP_ALLANY:
868          if (clen > 0)
869          { ADD_NEW(state_offset + 1, 0); }          { ADD_NEW(state_offset + 1, 0); }
870        break;        break;
871    
872        /*-----------------------------------------------------------------*/        /*-----------------------------------------------------------------*/
873        case OP_EODN:        case OP_EODN:
874        if (clen == 0 || (c == NEWLINE && ptr + 1 == end_subject))        if (clen == 0 || (IS_NEWLINE(ptr) && ptr == end_subject - md->nllen))
875          { ADD_ACTIVE(state_offset + 1, 0); }          { ADD_ACTIVE(state_offset + 1, 0); }
876        break;        break;
877    
# Line 693  for (;;) Line 879  for (;;)
879        case OP_DOLL:        case OP_DOLL:
880        if ((md->moptions & PCRE_NOTEOL) == 0)        if ((md->moptions & PCRE_NOTEOL) == 0)
881          {          {
882          if (clen == 0 || (c == NEWLINE && (ptr + 1 == end_subject ||          if (clen == 0 ||
883                                  (ims & PCRE_MULTILINE) != 0)))              ((md->poptions & PCRE_DOLLAR_ENDONLY) == 0 && IS_NEWLINE(ptr) &&
884                   ((ims & PCRE_MULTILINE) != 0 || ptr == end_subject - md->nllen)
885                ))
886            { ADD_ACTIVE(state_offset + 1, 0); }            { ADD_ACTIVE(state_offset + 1, 0); }
887          }          }
888        else if (c == NEWLINE && (ims & PCRE_MULTILINE) != 0)        else if ((ims & PCRE_MULTILINE) != 0 && IS_NEWLINE(ptr))
889          { ADD_ACTIVE(state_offset + 1, 0); }          { ADD_ACTIVE(state_offset + 1, 0); }
890        break;        break;
891    
# Line 729  for (;;) Line 917  for (;;)
917          if (ptr > start_subject)          if (ptr > start_subject)
918            {            {
919            const uschar *temp = ptr - 1;            const uschar *temp = ptr - 1;
920              if (temp < md->start_used_ptr) md->start_used_ptr = temp;
921  #ifdef SUPPORT_UTF8  #ifdef SUPPORT_UTF8
922            if (utf8) BACKCHAR(temp);            if (utf8) BACKCHAR(temp);
923  #endif  #endif
924            GETCHARTEST(d, temp);            GETCHARTEST(d, temp);
925    #ifdef SUPPORT_UCP
926              if ((md->poptions & PCRE_UCP) != 0)
927                {
928                if (d == '_') left_word = TRUE; else
929                  {
930                  int cat = UCD_CATEGORY(d);
931                  left_word = (cat == ucp_L || cat == ucp_N);
932                  }
933                }
934              else
935    #endif
936            left_word = d < 256 && (ctypes[d] & ctype_word) != 0;            left_word = d < 256 && (ctypes[d] & ctype_word) != 0;
937            }            }
938          else left_word = 0;          else left_word = FALSE;
939    
940          if (clen > 0) right_word = c < 256 && (ctypes[c] & ctype_word) != 0;          if (clen > 0)
941            else right_word = 0;            {
942    #ifdef SUPPORT_UCP
943              if ((md->poptions & PCRE_UCP) != 0)
944                {
945                if (c == '_') right_word = TRUE; else
946                  {
947                  int cat = UCD_CATEGORY(c);
948                  right_word = (cat == ucp_L || cat == ucp_N);
949                  }
950                }
951              else
952    #endif
953              right_word = c < 256 && (ctypes[c] & ctype_word) != 0;
954              }
955            else right_word = FALSE;
956    
957          if ((left_word == right_word) == (codevalue == OP_NOT_WORD_BOUNDARY))          if ((left_word == right_word) == (codevalue == OP_NOT_WORD_BOUNDARY))
958            { ADD_ACTIVE(state_offset + 1, 0); }            { ADD_ACTIVE(state_offset + 1, 0); }
# Line 746  for (;;) Line 960  for (;;)
960        break;        break;
961    
962    
 #ifdef SUPPORT_UCP  
   
963        /*-----------------------------------------------------------------*/        /*-----------------------------------------------------------------*/
964        /* Check the next character by Unicode property. We will get here only        /* Check the next character by Unicode property. We will get here only
965        if the support is in the binary; otherwise a compile-time error occurs.        if the support is in the binary; otherwise a compile-time error occurs.
966        */        */
967    
968    #ifdef SUPPORT_UCP
969        case OP_PROP:        case OP_PROP:
970        case OP_NOTPROP:        case OP_NOTPROP:
971        if (clen > 0)        if (clen > 0)
972          {          {
973          int rqdtype, category;          BOOL OK;
974          category = _pcre_ucp_findchar(c, &chartype, &othercase);          const ucd_record * prop = GET_UCD(c);
975          rqdtype = code[1];          switch(code[1])
         if (rqdtype >= 128)  
976            {            {
977            if ((rqdtype - 128 == category) == (codevalue == OP_PROP))            case PT_ANY:
978              { ADD_NEW(state_offset + 2, 0); }            OK = TRUE;
979            }            break;
980          else  
981            {            case PT_LAMP:
982            if ((rqdtype == chartype) == (codevalue == OP_PROP))            OK = prop->chartype == ucp_Lu || prop->chartype == ucp_Ll ||
983              { ADD_NEW(state_offset + 2, 0); }                 prop->chartype == ucp_Lt;
984              break;
985    
986              case PT_GC:
987              OK = _pcre_ucp_gentype[prop->chartype] == code[2];
988              break;
989    
990              case PT_PC:
991              OK = prop->chartype == code[2];
992              break;
993    
994              case PT_SC:
995              OK = prop->script == code[2];
996              break;
997    
998              /* These are specials for combination cases. */
999    
1000              case PT_ALNUM:
1001              OK = _pcre_ucp_gentype[prop->chartype] == ucp_L ||
1002                   _pcre_ucp_gentype[prop->chartype] == ucp_N;
1003              break;
1004    
1005              case PT_SPACE:    /* Perl space */
1006              OK = _pcre_ucp_gentype[prop->chartype] == ucp_Z ||
1007                   c == CHAR_HT || c == CHAR_NL || c == CHAR_FF || c == CHAR_CR;
1008              break;
1009    
1010              case PT_PXSPACE:  /* POSIX space */
1011              OK = _pcre_ucp_gentype[prop->chartype] == ucp_Z ||
1012                   c == CHAR_HT || c == CHAR_NL || c == CHAR_VT ||
1013                   c == CHAR_FF || c == CHAR_CR;
1014              break;
1015    
1016              case PT_WORD:
1017              OK = _pcre_ucp_gentype[prop->chartype] == ucp_L ||
1018                   _pcre_ucp_gentype[prop->chartype] == ucp_N ||
1019                   c == CHAR_UNDERSCORE;
1020              break;
1021    
1022              /* Should never occur, but keep compilers from grumbling. */
1023    
1024              default:
1025              OK = codevalue != OP_PROP;
1026              break;
1027            }            }
1028    
1029            if (OK == (codevalue == OP_PROP)) { ADD_NEW(state_offset + 3, 0); }
1030          }          }
1031        break;        break;
1032  #endif  #endif
# Line 779  for (;;) Line 1036  for (;;)
1036  /* ========================================================================== */  /* ========================================================================== */
1037        /* These opcodes likewise inspect the subject character, but have an        /* These opcodes likewise inspect the subject character, but have an
1038        argument that is not a data character. It is one of these opcodes:        argument that is not a data character. It is one of these opcodes:
1039        OP_ANY, OP_DIGIT, OP_NOT_DIGIT, OP_WHITESPACE, OP_NOT_SPACE, OP_WORDCHAR,        OP_ANY, OP_ALLANY, OP_DIGIT, OP_NOT_DIGIT, OP_WHITESPACE, OP_NOT_SPACE,
1040        OP_NOT_WORDCHAR. The value is loaded into d. */        OP_WORDCHAR, OP_NOT_WORDCHAR. The value is loaded into d. */
1041    
1042        case OP_TYPEPLUS:        case OP_TYPEPLUS:
1043        case OP_TYPEMINPLUS:        case OP_TYPEMINPLUS:
1044          case OP_TYPEPOSPLUS:
1045        count = current_state->count;  /* Already matched */        count = current_state->count;  /* Already matched */
1046        if (count > 0) { ADD_ACTIVE(state_offset + 2, 0); }        if (count > 0) { ADD_ACTIVE(state_offset + 2, 0); }
1047        if (clen > 0)        if (clen > 0)
1048          {          {
1049          if ((c >= 256 && d != OP_DIGIT && d != OP_WHITESPACE && d != OP_WORDCHAR) ||          if ((c >= 256 && d != OP_DIGIT && d != OP_WHITESPACE && d != OP_WORDCHAR) ||
1050              (c < 256 &&              (c < 256 &&
1051                (d != OP_ANY || c != '\n' || (ims & PCRE_DOTALL) != 0) &&                (d != OP_ANY || !IS_NEWLINE(ptr)) &&
1052                ((ctypes[c] & toptable1[d]) ^ toptable2[d]) != 0))                ((ctypes[c] & toptable1[d]) ^ toptable2[d]) != 0))
1053            {            {
1054              if (count > 0 && codevalue == OP_TYPEPOSPLUS)
1055                {
1056                active_count--;            /* Remove non-match possibility */
1057                next_active_state--;
1058                }
1059            count++;            count++;
1060            ADD_NEW(state_offset, count);            ADD_NEW(state_offset, count);
1061            }            }
# Line 802  for (;;) Line 1065  for (;;)
1065        /*-----------------------------------------------------------------*/        /*-----------------------------------------------------------------*/
1066        case OP_TYPEQUERY:        case OP_TYPEQUERY:
1067        case OP_TYPEMINQUERY:        case OP_TYPEMINQUERY:
1068          case OP_TYPEPOSQUERY:
1069        ADD_ACTIVE(state_offset + 2, 0);        ADD_ACTIVE(state_offset + 2, 0);
1070        if (clen > 0)        if (clen > 0)
1071          {          {
1072          if ((c >= 256 && d != OP_DIGIT && d != OP_WHITESPACE && d != OP_WORDCHAR) ||          if ((c >= 256 && d != OP_DIGIT && d != OP_WHITESPACE && d != OP_WORDCHAR) ||
1073              (c < 256 &&              (c < 256 &&
1074                (d != OP_ANY || c != '\n' || (ims & PCRE_DOTALL) != 0) &&                (d != OP_ANY || !IS_NEWLINE(ptr)) &&
1075                ((ctypes[c] & toptable1[d]) ^ toptable2[d]) != 0))                ((ctypes[c] & toptable1[d]) ^ toptable2[d]) != 0))
1076            {            {
1077              if (codevalue == OP_TYPEPOSQUERY)
1078                {
1079                active_count--;            /* Remove non-match possibility */
1080                next_active_state--;
1081                }
1082            ADD_NEW(state_offset + 2, 0);            ADD_NEW(state_offset + 2, 0);
1083            }            }
1084          }          }
# Line 818  for (;;) Line 1087  for (;;)
1087        /*-----------------------------------------------------------------*/        /*-----------------------------------------------------------------*/
1088        case OP_TYPESTAR:        case OP_TYPESTAR:
1089        case OP_TYPEMINSTAR:        case OP_TYPEMINSTAR:
1090          case OP_TYPEPOSSTAR:
1091        ADD_ACTIVE(state_offset + 2, 0);        ADD_ACTIVE(state_offset + 2, 0);
1092        if (clen > 0)        if (clen > 0)
1093          {          {
1094          if ((c >= 256 && d != OP_DIGIT && d != OP_WHITESPACE && d != OP_WORDCHAR) ||          if ((c >= 256 && d != OP_DIGIT && d != OP_WHITESPACE && d != OP_WORDCHAR) ||
1095              (c < 256 &&              (c < 256 &&
1096                (d != OP_ANY || c != '\n' || (ims & PCRE_DOTALL) != 0) &&                (d != OP_ANY || !IS_NEWLINE(ptr)) &&
1097                ((ctypes[c] & toptable1[d]) ^ toptable2[d]) != 0))                ((ctypes[c] & toptable1[d]) ^ toptable2[d]) != 0))
1098            {            {
1099              if (codevalue == OP_TYPEPOSSTAR)
1100                {
1101                active_count--;            /* Remove non-match possibility */
1102                next_active_state--;
1103                }
1104            ADD_NEW(state_offset, 0);            ADD_NEW(state_offset, 0);
1105            }            }
1106          }          }
# Line 833  for (;;) Line 1108  for (;;)
1108    
1109        /*-----------------------------------------------------------------*/        /*-----------------------------------------------------------------*/
1110        case OP_TYPEEXACT:        case OP_TYPEEXACT:
1111          count = current_state->count;  /* Number already matched */
1112          if (clen > 0)
1113            {
1114            if ((c >= 256 && d != OP_DIGIT && d != OP_WHITESPACE && d != OP_WORDCHAR) ||
1115                (c < 256 &&
1116                  (d != OP_ANY || !IS_NEWLINE(ptr)) &&
1117                  ((ctypes[c] & toptable1[d]) ^ toptable2[d]) != 0))
1118              {
1119              if (++count >= GET2(code, 1))
1120                { ADD_NEW(state_offset + 4, 0); }
1121              else
1122                { ADD_NEW(state_offset, count); }
1123              }
1124            }
1125          break;
1126    
1127          /*-----------------------------------------------------------------*/
1128        case OP_TYPEUPTO:        case OP_TYPEUPTO:
1129        case OP_TYPEMINUPTO:        case OP_TYPEMINUPTO:
1130        if (codevalue != OP_TYPEEXACT)        case OP_TYPEPOSUPTO:
1131          { ADD_ACTIVE(state_offset + 4, 0); }        ADD_ACTIVE(state_offset + 4, 0);
1132        count = current_state->count;  /* Number already matched */        count = current_state->count;  /* Number already matched */
1133        if (clen > 0)        if (clen > 0)
1134          {          {
1135          if ((c >= 256 && d != OP_DIGIT && d != OP_WHITESPACE && d != OP_WORDCHAR) ||          if ((c >= 256 && d != OP_DIGIT && d != OP_WHITESPACE && d != OP_WORDCHAR) ||
1136              (c < 256 &&              (c < 256 &&
1137                (d != OP_ANY || c != '\n' || (ims & PCRE_DOTALL) != 0) &&                (d != OP_ANY || !IS_NEWLINE(ptr)) &&
1138                ((ctypes[c] & toptable1[d]) ^ toptable2[d]) != 0))                ((ctypes[c] & toptable1[d]) ^ toptable2[d]) != 0))
1139            {            {
1140              if (codevalue == OP_TYPEPOSUPTO)
1141                {
1142                active_count--;           /* Remove non-match possibility */
1143                next_active_state--;
1144                }
1145            if (++count >= GET2(code, 1))            if (++count >= GET2(code, 1))
1146              { ADD_NEW(state_offset + 4, 0); }              { ADD_NEW(state_offset + 4, 0); }
1147            else            else
# Line 855  for (;;) Line 1152  for (;;)
1152    
1153  /* ========================================================================== */  /* ========================================================================== */
1154        /* These are virtual opcodes that are used when something like        /* These are virtual opcodes that are used when something like
1155        OP_TYPEPLUS has OP_PROP, OP_NOTPROP, or OP_EXTUNI as its argument. It        OP_TYPEPLUS has OP_PROP, OP_NOTPROP, OP_ANYNL, or OP_EXTUNI as its
1156        keeps the code above fast for the other cases. The argument is in the        argument. It keeps the code above fast for the other cases. The argument
1157        d variable. */        is in the d variable. */
1158    
1159    #ifdef SUPPORT_UCP
1160        case OP_PROP_EXTRA + OP_TYPEPLUS:        case OP_PROP_EXTRA + OP_TYPEPLUS:
1161        case OP_PROP_EXTRA + OP_TYPEMINPLUS:        case OP_PROP_EXTRA + OP_TYPEMINPLUS:
1162          case OP_PROP_EXTRA + OP_TYPEPOSPLUS:
1163        count = current_state->count;           /* Already matched */        count = current_state->count;           /* Already matched */
1164        if (count > 0) { ADD_ACTIVE(state_offset + 3, 0); }        if (count > 0) { ADD_ACTIVE(state_offset + 4, 0); }
1165        if (clen > 0)        if (clen > 0)
1166          {          {
1167          int category = _pcre_ucp_findchar(c, &chartype, &othercase);          BOOL OK;
1168          int rqdtype = code[2];          const ucd_record * prop = GET_UCD(c);
1169          if ((d == OP_PROP) ==          switch(code[2])
1170              (rqdtype == ((rqdtype >= 128)? (category + 128) : chartype)))            {
1171            { count++; ADD_NEW(state_offset, count); }            case PT_ANY:
1172              OK = TRUE;
1173              break;
1174    
1175              case PT_LAMP:
1176              OK = prop->chartype == ucp_Lu || prop->chartype == ucp_Ll ||
1177                prop->chartype == ucp_Lt;
1178              break;
1179    
1180              case PT_GC:
1181              OK = _pcre_ucp_gentype[prop->chartype] == code[3];
1182              break;
1183    
1184              case PT_PC:
1185              OK = prop->chartype == code[3];
1186              break;
1187    
1188              case PT_SC:
1189              OK = prop->script == code[3];
1190              break;
1191    
1192              /* These are specials for combination cases. */
1193    
1194              case PT_ALNUM:
1195              OK = _pcre_ucp_gentype[prop->chartype] == ucp_L ||
1196                   _pcre_ucp_gentype[prop->chartype] == ucp_N;
1197              break;
1198    
1199              case PT_SPACE:    /* Perl space */
1200              OK = _pcre_ucp_gentype[prop->chartype] == ucp_Z ||
1201                   c == CHAR_HT || c == CHAR_NL || c == CHAR_FF || c == CHAR_CR;
1202              break;
1203    
1204              case PT_PXSPACE:  /* POSIX space */
1205              OK = _pcre_ucp_gentype[prop->chartype] == ucp_Z ||
1206                   c == CHAR_HT || c == CHAR_NL || c == CHAR_VT ||
1207                   c == CHAR_FF || c == CHAR_CR;
1208              break;
1209    
1210              case PT_WORD:
1211              OK = _pcre_ucp_gentype[prop->chartype] == ucp_L ||
1212                   _pcre_ucp_gentype[prop->chartype] == ucp_N ||
1213                   c == CHAR_UNDERSCORE;
1214              break;
1215    
1216              /* Should never occur, but keep compilers from grumbling. */
1217    
1218              default:
1219              OK = codevalue != OP_PROP;
1220              break;
1221              }
1222    
1223            if (OK == (d == OP_PROP))
1224              {
1225              if (count > 0 && codevalue == OP_PROP_EXTRA + OP_TYPEPOSPLUS)
1226                {
1227                active_count--;           /* Remove non-match possibility */
1228                next_active_state--;
1229                }
1230              count++;
1231              ADD_NEW(state_offset, count);
1232              }
1233          }          }
1234        break;        break;
1235    
1236        /*-----------------------------------------------------------------*/        /*-----------------------------------------------------------------*/
1237        case OP_EXTUNI_EXTRA + OP_TYPEPLUS:        case OP_EXTUNI_EXTRA + OP_TYPEPLUS:
1238        case OP_EXTUNI_EXTRA + OP_TYPEMINPLUS:        case OP_EXTUNI_EXTRA + OP_TYPEMINPLUS:
1239          case OP_EXTUNI_EXTRA + OP_TYPEPOSPLUS:
1240        count = current_state->count;  /* Already matched */        count = current_state->count;  /* Already matched */
1241        if (count > 0) { ADD_ACTIVE(state_offset + 2, 0); }        if (count > 0) { ADD_ACTIVE(state_offset + 2, 0); }
1242        if (clen > 0 && _pcre_ucp_findchar(c, &chartype, &othercase) != ucp_M)        if (clen > 0 && UCD_CATEGORY(c) != ucp_M)
1243          {          {
1244          const uschar *nptr = ptr + clen;          const uschar *nptr = ptr + clen;
1245          int ncount = 0;          int ncount = 0;
1246            if (count > 0 && codevalue == OP_EXTUNI_EXTRA + OP_TYPEPOSPLUS)
1247              {
1248              active_count--;           /* Remove non-match possibility */
1249              next_active_state--;
1250              }
1251          while (nptr < end_subject)          while (nptr < end_subject)
1252            {            {
1253            int nd;            int nd;
1254            int ndlen = 1;            int ndlen = 1;
1255            GETCHARLEN(nd, nptr, ndlen);            GETCHARLEN(nd, nptr, ndlen);
1256            if (_pcre_ucp_findchar(nd, &chartype, &othercase) != ucp_M) break;            if (UCD_CATEGORY(nd) != ucp_M) break;
1257            ncount++;            ncount++;
1258            nptr += ndlen;            nptr += ndlen;
1259            }            }
# Line 895  for (;;) Line 1261  for (;;)
1261          ADD_NEW_DATA(-state_offset, count, ncount);          ADD_NEW_DATA(-state_offset, count, ncount);
1262          }          }
1263        break;        break;
1264    #endif
1265    
1266          /*-----------------------------------------------------------------*/
1267          case OP_ANYNL_EXTRA + OP_TYPEPLUS:
1268          case OP_ANYNL_EXTRA + OP_TYPEMINPLUS:
1269          case OP_ANYNL_EXTRA + OP_TYPEPOSPLUS:
1270          count = current_state->count;  /* Already matched */
1271          if (count > 0) { ADD_ACTIVE(state_offset + 2, 0); }
1272          if (clen > 0)
1273            {
1274            int ncount = 0;
1275            switch (c)
1276              {
1277              case 0x000b:
1278              case 0x000c:
1279              case 0x0085:
1280              case 0x2028:
1281              case 0x2029:
1282              if ((md->moptions & PCRE_BSR_ANYCRLF) != 0) break;
1283              goto ANYNL01;
1284    
1285              case 0x000d:
1286              if (ptr + 1 < end_subject && ptr[1] == 0x0a) ncount = 1;
1287              /* Fall through */
1288    
1289              ANYNL01:
1290              case 0x000a:
1291              if (count > 0 && codevalue == OP_ANYNL_EXTRA + OP_TYPEPOSPLUS)
1292                {
1293                active_count--;           /* Remove non-match possibility */
1294                next_active_state--;
1295                }
1296              count++;
1297              ADD_NEW_DATA(-state_offset, count, ncount);
1298              break;
1299    
1300              default:
1301              break;
1302              }
1303            }
1304          break;
1305    
1306          /*-----------------------------------------------------------------*/
1307          case OP_VSPACE_EXTRA + OP_TYPEPLUS:
1308          case OP_VSPACE_EXTRA + OP_TYPEMINPLUS:
1309          case OP_VSPACE_EXTRA + OP_TYPEPOSPLUS:
1310          count = current_state->count;  /* Already matched */
1311          if (count > 0) { ADD_ACTIVE(state_offset + 2, 0); }
1312          if (clen > 0)
1313            {
1314            BOOL OK;
1315            switch (c)
1316              {
1317              case 0x000a:
1318              case 0x000b:
1319              case 0x000c:
1320              case 0x000d:
1321              case 0x0085:
1322              case 0x2028:
1323              case 0x2029:
1324              OK = TRUE;
1325              break;
1326    
1327              default:
1328              OK = FALSE;
1329              break;
1330              }
1331    
1332            if (OK == (d == OP_VSPACE))
1333              {
1334              if (count > 0 && codevalue == OP_VSPACE_EXTRA + OP_TYPEPOSPLUS)
1335                {
1336                active_count--;           /* Remove non-match possibility */
1337                next_active_state--;
1338                }
1339              count++;
1340              ADD_NEW_DATA(-state_offset, count, 0);
1341              }
1342            }
1343          break;
1344    
1345          /*-----------------------------------------------------------------*/
1346          case OP_HSPACE_EXTRA + OP_TYPEPLUS:
1347          case OP_HSPACE_EXTRA + OP_TYPEMINPLUS:
1348          case OP_HSPACE_EXTRA + OP_TYPEPOSPLUS:
1349          count = current_state->count;  /* Already matched */
1350          if (count > 0) { ADD_ACTIVE(state_offset + 2, 0); }
1351          if (clen > 0)
1352            {
1353            BOOL OK;
1354            switch (c)
1355              {
1356              case 0x09:      /* HT */
1357              case 0x20:      /* SPACE */
1358              case 0xa0:      /* NBSP */
1359              case 0x1680:    /* OGHAM SPACE MARK */
1360              case 0x180e:    /* MONGOLIAN VOWEL SEPARATOR */
1361              case 0x2000:    /* EN QUAD */
1362              case 0x2001:    /* EM QUAD */
1363              case 0x2002:    /* EN SPACE */
1364              case 0x2003:    /* EM SPACE */
1365              case 0x2004:    /* THREE-PER-EM SPACE */
1366              case 0x2005:    /* FOUR-PER-EM SPACE */
1367              case 0x2006:    /* SIX-PER-EM SPACE */
1368              case 0x2007:    /* FIGURE SPACE */
1369              case 0x2008:    /* PUNCTUATION SPACE */
1370              case 0x2009:    /* THIN SPACE */
1371              case 0x200A:    /* HAIR SPACE */
1372              case 0x202f:    /* NARROW NO-BREAK SPACE */
1373              case 0x205f:    /* MEDIUM MATHEMATICAL SPACE */
1374              case 0x3000:    /* IDEOGRAPHIC SPACE */
1375              OK = TRUE;
1376              break;
1377    
1378              default:
1379              OK = FALSE;
1380              break;
1381              }
1382    
1383            if (OK == (d == OP_HSPACE))
1384              {
1385              if (count > 0 && codevalue == OP_HSPACE_EXTRA + OP_TYPEPOSPLUS)
1386                {
1387                active_count--;           /* Remove non-match possibility */
1388                next_active_state--;
1389                }
1390              count++;
1391              ADD_NEW_DATA(-state_offset, count, 0);
1392              }
1393            }
1394          break;
1395    
1396        /*-----------------------------------------------------------------*/        /*-----------------------------------------------------------------*/
1397    #ifdef SUPPORT_UCP
1398        case OP_PROP_EXTRA + OP_TYPEQUERY:        case OP_PROP_EXTRA + OP_TYPEQUERY:
1399        case OP_PROP_EXTRA + OP_TYPEMINQUERY:        case OP_PROP_EXTRA + OP_TYPEMINQUERY:
1400        count = 3;        case OP_PROP_EXTRA + OP_TYPEPOSQUERY:
1401          count = 4;
1402        goto QS1;        goto QS1;
1403    
1404        case OP_PROP_EXTRA + OP_TYPESTAR:        case OP_PROP_EXTRA + OP_TYPESTAR:
1405        case OP_PROP_EXTRA + OP_TYPEMINSTAR:        case OP_PROP_EXTRA + OP_TYPEMINSTAR:
1406          case OP_PROP_EXTRA + OP_TYPEPOSSTAR:
1407        count = 0;        count = 0;
1408    
1409        QS1:        QS1:
1410    
1411        ADD_ACTIVE(state_offset + 3, 0);        ADD_ACTIVE(state_offset + 4, 0);
1412        if (clen > 0)        if (clen > 0)
1413          {          {
1414          int category = _pcre_ucp_findchar(c, &chartype, &othercase);          BOOL OK;
1415          int rqdtype = code[2];          const ucd_record * prop = GET_UCD(c);
1416          if ((d == OP_PROP) ==          switch(code[2])
1417              (rqdtype == ((rqdtype >= 128)? (category + 128) : chartype)))            {
1418            { ADD_NEW(state_offset + count, 0); }            case PT_ANY:
1419              OK = TRUE;
1420              break;
1421    
1422              case PT_LAMP:
1423              OK = prop->chartype == ucp_Lu || prop->chartype == ucp_Ll ||
1424                prop->chartype == ucp_Lt;
1425              break;
1426    
1427              case PT_GC:
1428              OK = _pcre_ucp_gentype[prop->chartype] == code[3];
1429              break;
1430    
1431              case PT_PC:
1432              OK = prop->chartype == code[3];
1433              break;
1434    
1435              case PT_SC:
1436              OK = prop->script == code[3];
1437              break;
1438    
1439              /* These are specials for combination cases. */
1440    
1441              case PT_ALNUM:
1442              OK = _pcre_ucp_gentype[prop->chartype] == ucp_L ||
1443                   _pcre_ucp_gentype[prop->chartype] == ucp_N;
1444              break;
1445    
1446              case PT_SPACE:    /* Perl space */
1447              OK = _pcre_ucp_gentype[prop->chartype] == ucp_Z ||
1448                   c == CHAR_HT || c == CHAR_NL || c == CHAR_FF || c == CHAR_CR;
1449              break;
1450    
1451              case PT_PXSPACE:  /* POSIX space */
1452              OK = _pcre_ucp_gentype[prop->chartype] == ucp_Z ||
1453                   c == CHAR_HT || c == CHAR_NL || c == CHAR_VT ||
1454                   c == CHAR_FF || c == CHAR_CR;
1455              break;
1456    
1457              case PT_WORD:
1458              OK = _pcre_ucp_gentype[prop->chartype] == ucp_L ||
1459                   _pcre_ucp_gentype[prop->chartype] == ucp_N ||
1460                   c == CHAR_UNDERSCORE;
1461              break;
1462    
1463              /* Should never occur, but keep compilers from grumbling. */
1464    
1465              default:
1466              OK = codevalue != OP_PROP;
1467              break;
1468              }
1469    
1470            if (OK == (d == OP_PROP))
1471              {
1472              if (codevalue == OP_PROP_EXTRA + OP_TYPEPOSSTAR ||
1473                  codevalue == OP_PROP_EXTRA + OP_TYPEPOSQUERY)
1474                {
1475                active_count--;           /* Remove non-match possibility */
1476                next_active_state--;
1477                }
1478              ADD_NEW(state_offset + count, 0);
1479              }
1480          }          }
1481        break;        break;
1482    
1483        /*-----------------------------------------------------------------*/        /*-----------------------------------------------------------------*/
1484        case OP_EXTUNI_EXTRA + OP_TYPEQUERY:        case OP_EXTUNI_EXTRA + OP_TYPEQUERY:
1485        case OP_EXTUNI_EXTRA + OP_TYPEMINQUERY:        case OP_EXTUNI_EXTRA + OP_TYPEMINQUERY:
1486          case OP_EXTUNI_EXTRA + OP_TYPEPOSQUERY:
1487        count = 2;        count = 2;
1488        goto QS2;        goto QS2;
1489    
1490        case OP_EXTUNI_EXTRA + OP_TYPESTAR:        case OP_EXTUNI_EXTRA + OP_TYPESTAR:
1491        case OP_EXTUNI_EXTRA + OP_TYPEMINSTAR:        case OP_EXTUNI_EXTRA + OP_TYPEMINSTAR:
1492          case OP_EXTUNI_EXTRA + OP_TYPEPOSSTAR:
1493        count = 0;        count = 0;
1494    
1495        QS2:        QS2:
1496    
1497        ADD_ACTIVE(state_offset + 2, 0);        ADD_ACTIVE(state_offset + 2, 0);
1498        if (clen > 0 && _pcre_ucp_findchar(c, &chartype, &othercase) != ucp_M)        if (clen > 0 && UCD_CATEGORY(c) != ucp_M)
1499          {          {
1500          const uschar *nptr = ptr + clen;          const uschar *nptr = ptr + clen;
1501          int ncount = 0;          int ncount = 0;
1502            if (codevalue == OP_EXTUNI_EXTRA + OP_TYPEPOSSTAR ||
1503                codevalue == OP_EXTUNI_EXTRA + OP_TYPEPOSQUERY)
1504              {
1505              active_count--;           /* Remove non-match possibility */
1506              next_active_state--;
1507              }
1508          while (nptr < end_subject)          while (nptr < end_subject)
1509            {            {
1510            int nd;            int nd;
1511            int ndlen = 1;            int ndlen = 1;
1512            GETCHARLEN(nd, nptr, ndlen);            GETCHARLEN(nd, nptr, ndlen);
1513            if (_pcre_ucp_findchar(nd, &chartype, &othercase) != ucp_M) break;            if (UCD_CATEGORY(nd) != ucp_M) break;
1514            ncount++;            ncount++;
1515            nptr += ndlen;            nptr += ndlen;
1516            }            }
1517          ADD_NEW_DATA(-(state_offset + count), 0, ncount);          ADD_NEW_DATA(-(state_offset + count), 0, ncount);
1518          }          }
1519        break;        break;
1520    #endif
1521    
1522        /*-----------------------------------------------------------------*/        /*-----------------------------------------------------------------*/
1523        case OP_PROP_EXTRA + OP_TYPEEXACT:        case OP_ANYNL_EXTRA + OP_TYPEQUERY:
1524        case OP_PROP_EXTRA + OP_TYPEUPTO:        case OP_ANYNL_EXTRA + OP_TYPEMINQUERY:
1525        case OP_PROP_EXTRA + OP_TYPEMINUPTO:        case OP_ANYNL_EXTRA + OP_TYPEPOSQUERY:
1526        if (codevalue != OP_PROP_EXTRA + OP_TYPEEXACT)        count = 2;
1527          { ADD_ACTIVE(state_offset + 5, 0); }        goto QS3;
1528        count = current_state->count;  /* Number already matched */  
1529          case OP_ANYNL_EXTRA + OP_TYPESTAR:
1530          case OP_ANYNL_EXTRA + OP_TYPEMINSTAR:
1531          case OP_ANYNL_EXTRA + OP_TYPEPOSSTAR:
1532          count = 0;
1533    
1534          QS3:
1535          ADD_ACTIVE(state_offset + 2, 0);
1536        if (clen > 0)        if (clen > 0)
1537          {          {
1538          int category = _pcre_ucp_findchar(c, &chartype, &othercase);          int ncount = 0;
1539          int rqdtype = code[4];          switch (c)
         if ((d == OP_PROP) ==  
             (rqdtype == ((rqdtype >= 128)? (category + 128) : chartype)))  
1540            {            {
1541            if (++count >= GET2(code, 1))            case 0x000b:
1542              { ADD_NEW(state_offset + 5, 0); }            case 0x000c:
1543            else            case 0x0085:
1544              { ADD_NEW(state_offset, count); }            case 0x2028:
1545              case 0x2029:
1546              if ((md->moptions & PCRE_BSR_ANYCRLF) != 0) break;
1547              goto ANYNL02;
1548    
1549              case 0x000d:
1550              if (ptr + 1 < end_subject && ptr[1] == 0x0a) ncount = 1;
1551              /* Fall through */
1552    
1553              ANYNL02:
1554              case 0x000a:
1555              if (codevalue == OP_ANYNL_EXTRA + OP_TYPEPOSSTAR ||
1556                  codevalue == OP_ANYNL_EXTRA + OP_TYPEPOSQUERY)
1557                {
1558                active_count--;           /* Remove non-match possibility */
1559                next_active_state--;
1560                }
1561              ADD_NEW_DATA(-(state_offset + count), 0, ncount);
1562              break;
1563    
1564              default:
1565              break;
1566            }            }
1567          }          }
1568        break;        break;
1569    
1570        /*-----------------------------------------------------------------*/        /*-----------------------------------------------------------------*/
1571        case OP_EXTUNI_EXTRA + OP_TYPEEXACT:        case OP_VSPACE_EXTRA + OP_TYPEQUERY:
1572        case OP_EXTUNI_EXTRA + OP_TYPEUPTO:        case OP_VSPACE_EXTRA + OP_TYPEMINQUERY:
1573        case OP_EXTUNI_EXTRA + OP_TYPEMINUPTO:        case OP_VSPACE_EXTRA + OP_TYPEPOSQUERY:
1574        if (codevalue != OP_EXTUNI_EXTRA + OP_TYPEEXACT)        count = 2;
1575          { ADD_ACTIVE(state_offset + 4, 0); }        goto QS4;
1576        count = current_state->count;  /* Number already matched */  
1577        if (clen > 0 && _pcre_ucp_findchar(c, &chartype, &othercase) != ucp_M)        case OP_VSPACE_EXTRA + OP_TYPESTAR:
1578          case OP_VSPACE_EXTRA + OP_TYPEMINSTAR:
1579          case OP_VSPACE_EXTRA + OP_TYPEPOSSTAR:
1580          count = 0;
1581    
1582          QS4:
1583          ADD_ACTIVE(state_offset + 2, 0);
1584          if (clen > 0)
1585          {          {
1586          const uschar *nptr = ptr + clen;          BOOL OK;
1587            switch (c)
1588              {
1589              case 0x000a:
1590              case 0x000b:
1591              case 0x000c:
1592              case 0x000d:
1593              case 0x0085:
1594              case 0x2028:
1595              case 0x2029:
1596              OK = TRUE;
1597              break;
1598    
1599              default:
1600              OK = FALSE;
1601              break;
1602              }
1603            if (OK == (d == OP_VSPACE))
1604              {
1605              if (codevalue == OP_VSPACE_EXTRA + OP_TYPEPOSSTAR ||
1606                  codevalue == OP_VSPACE_EXTRA + OP_TYPEPOSQUERY)
1607                {
1608                active_count--;           /* Remove non-match possibility */
1609                next_active_state--;
1610                }
1611              ADD_NEW_DATA(-(state_offset + count), 0, 0);
1612              }
1613            }
1614          break;
1615    
1616          /*-----------------------------------------------------------------*/
1617          case OP_HSPACE_EXTRA + OP_TYPEQUERY:
1618          case OP_HSPACE_EXTRA + OP_TYPEMINQUERY:
1619          case OP_HSPACE_EXTRA + OP_TYPEPOSQUERY:
1620          count = 2;
1621          goto QS5;
1622    
1623          case OP_HSPACE_EXTRA + OP_TYPESTAR:
1624          case OP_HSPACE_EXTRA + OP_TYPEMINSTAR:
1625          case OP_HSPACE_EXTRA + OP_TYPEPOSSTAR:
1626          count = 0;
1627    
1628          QS5:
1629          ADD_ACTIVE(state_offset + 2, 0);
1630          if (clen > 0)
1631            {
1632            BOOL OK;
1633            switch (c)
1634              {
1635              case 0x09:      /* HT */
1636              case 0x20:      /* SPACE */
1637              case 0xa0:      /* NBSP */
1638              case 0x1680:    /* OGHAM SPACE MARK */
1639              case 0x180e:    /* MONGOLIAN VOWEL SEPARATOR */
1640              case 0x2000:    /* EN QUAD */
1641              case 0x2001:    /* EM QUAD */
1642              case 0x2002:    /* EN SPACE */
1643              case 0x2003:    /* EM SPACE */
1644              case 0x2004:    /* THREE-PER-EM SPACE */
1645              case 0x2005:    /* FOUR-PER-EM SPACE */
1646              case 0x2006:    /* SIX-PER-EM SPACE */
1647              case 0x2007:    /* FIGURE SPACE */
1648              case 0x2008:    /* PUNCTUATION SPACE */
1649              case 0x2009:    /* THIN SPACE */
1650              case 0x200A:    /* HAIR SPACE */
1651              case 0x202f:    /* NARROW NO-BREAK SPACE */
1652              case 0x205f:    /* MEDIUM MATHEMATICAL SPACE */
1653              case 0x3000:    /* IDEOGRAPHIC SPACE */
1654              OK = TRUE;
1655              break;
1656    
1657              default:
1658              OK = FALSE;
1659              break;
1660              }
1661    
1662            if (OK == (d == OP_HSPACE))
1663              {
1664              if (codevalue == OP_HSPACE_EXTRA + OP_TYPEPOSSTAR ||
1665                  codevalue == OP_HSPACE_EXTRA + OP_TYPEPOSQUERY)
1666                {
1667                active_count--;           /* Remove non-match possibility */
1668                next_active_state--;
1669                }
1670              ADD_NEW_DATA(-(state_offset + count), 0, 0);
1671              }
1672            }
1673          break;
1674    
1675          /*-----------------------------------------------------------------*/
1676    #ifdef SUPPORT_UCP
1677          case OP_PROP_EXTRA + OP_TYPEEXACT:
1678          case OP_PROP_EXTRA + OP_TYPEUPTO:
1679          case OP_PROP_EXTRA + OP_TYPEMINUPTO:
1680          case OP_PROP_EXTRA + OP_TYPEPOSUPTO:
1681          if (codevalue != OP_PROP_EXTRA + OP_TYPEEXACT)
1682            { ADD_ACTIVE(state_offset + 6, 0); }
1683          count = current_state->count;  /* Number already matched */
1684          if (clen > 0)
1685            {
1686            BOOL OK;
1687            const ucd_record * prop = GET_UCD(c);
1688            switch(code[4])
1689              {
1690              case PT_ANY:
1691              OK = TRUE;
1692              break;
1693    
1694              case PT_LAMP:
1695              OK = prop->chartype == ucp_Lu || prop->chartype == ucp_Ll ||
1696                prop->chartype == ucp_Lt;
1697              break;
1698    
1699              case PT_GC:
1700              OK = _pcre_ucp_gentype[prop->chartype] == code[5];
1701              break;
1702    
1703              case PT_PC:
1704              OK = prop->chartype == code[5];
1705              break;
1706    
1707              case PT_SC:
1708              OK = prop->script == code[5];
1709              break;
1710    
1711              /* These are specials for combination cases. */
1712    
1713              case PT_ALNUM:
1714              OK = _pcre_ucp_gentype[prop->chartype] == ucp_L ||
1715                   _pcre_ucp_gentype[prop->chartype] == ucp_N;
1716              break;
1717    
1718              case PT_SPACE:    /* Perl space */
1719              OK = _pcre_ucp_gentype[prop->chartype] == ucp_Z ||
1720                   c == CHAR_HT || c == CHAR_NL || c == CHAR_FF || c == CHAR_CR;
1721              break;
1722    
1723              case PT_PXSPACE:  /* POSIX space */
1724              OK = _pcre_ucp_gentype[prop->chartype] == ucp_Z ||
1725                   c == CHAR_HT || c == CHAR_NL || c == CHAR_VT ||
1726                   c == CHAR_FF || c == CHAR_CR;
1727              break;
1728    
1729              case PT_WORD:
1730              OK = _pcre_ucp_gentype[prop->chartype] == ucp_L ||
1731                   _pcre_ucp_gentype[prop->chartype] == ucp_N ||
1732                   c == CHAR_UNDERSCORE;
1733              break;
1734    
1735              /* Should never occur, but keep compilers from grumbling. */
1736    
1737              default:
1738              OK = codevalue != OP_PROP;
1739              break;
1740              }
1741    
1742            if (OK == (d == OP_PROP))
1743              {
1744              if (codevalue == OP_PROP_EXTRA + OP_TYPEPOSUPTO)
1745                {
1746                active_count--;           /* Remove non-match possibility */
1747                next_active_state--;
1748                }
1749              if (++count >= GET2(code, 1))
1750                { ADD_NEW(state_offset + 6, 0); }
1751              else
1752                { ADD_NEW(state_offset, count); }
1753              }
1754            }
1755          break;
1756    
1757          /*-----------------------------------------------------------------*/
1758          case OP_EXTUNI_EXTRA + OP_TYPEEXACT:
1759          case OP_EXTUNI_EXTRA + OP_TYPEUPTO:
1760          case OP_EXTUNI_EXTRA + OP_TYPEMINUPTO:
1761          case OP_EXTUNI_EXTRA + OP_TYPEPOSUPTO:
1762          if (codevalue != OP_EXTUNI_EXTRA + OP_TYPEEXACT)
1763            { ADD_ACTIVE(state_offset + 4, 0); }
1764          count = current_state->count;  /* Number already matched */
1765          if (clen > 0 && UCD_CATEGORY(c) != ucp_M)
1766            {
1767            const uschar *nptr = ptr + clen;
1768          int ncount = 0;          int ncount = 0;
1769            if (codevalue == OP_EXTUNI_EXTRA + OP_TYPEPOSUPTO)
1770              {
1771              active_count--;           /* Remove non-match possibility */
1772              next_active_state--;
1773              }
1774          while (nptr < end_subject)          while (nptr < end_subject)
1775            {            {
1776            int nd;            int nd;
1777            int ndlen = 1;            int ndlen = 1;
1778            GETCHARLEN(nd, nptr, ndlen);            GETCHARLEN(nd, nptr, ndlen);
1779            if (_pcre_ucp_findchar(nd, &chartype, &othercase) != ucp_M) break;            if (UCD_CATEGORY(nd) != ucp_M) break;
1780            ncount++;            ncount++;
1781            nptr += ndlen;            nptr += ndlen;
1782            }            }
# Line 997  for (;;) Line 1786  for (;;)
1786            { ADD_NEW_DATA(-state_offset, count, ncount); }            { ADD_NEW_DATA(-state_offset, count, ncount); }
1787          }          }
1788        break;        break;
1789    #endif
1790    
1791          /*-----------------------------------------------------------------*/
1792          case OP_ANYNL_EXTRA + OP_TYPEEXACT:
1793          case OP_ANYNL_EXTRA + OP_TYPEUPTO:
1794          case OP_ANYNL_EXTRA + OP_TYPEMINUPTO:
1795          case OP_ANYNL_EXTRA + OP_TYPEPOSUPTO:
1796          if (codevalue != OP_ANYNL_EXTRA + OP_TYPEEXACT)
1797            { ADD_ACTIVE(state_offset + 4, 0); }
1798          count = current_state->count;  /* Number already matched */
1799          if (clen > 0)
1800            {
1801            int ncount = 0;
1802            switch (c)
1803              {
1804              case 0x000b:
1805              case 0x000c:
1806              case 0x0085:
1807              case 0x2028:
1808              case 0x2029:
1809              if ((md->moptions & PCRE_BSR_ANYCRLF) != 0) break;
1810              goto ANYNL03;
1811    
1812              case 0x000d:
1813              if (ptr + 1 < end_subject && ptr[1] == 0x0a) ncount = 1;
1814              /* Fall through */
1815    
1816              ANYNL03:
1817              case 0x000a:
1818              if (codevalue == OP_ANYNL_EXTRA + OP_TYPEPOSUPTO)
1819                {
1820                active_count--;           /* Remove non-match possibility */
1821                next_active_state--;
1822                }
1823              if (++count >= GET2(code, 1))
1824                { ADD_NEW_DATA(-(state_offset + 4), 0, ncount); }
1825              else
1826                { ADD_NEW_DATA(-state_offset, count, ncount); }
1827              break;
1828    
1829              default:
1830              break;
1831              }
1832            }
1833          break;
1834    
1835          /*-----------------------------------------------------------------*/
1836          case OP_VSPACE_EXTRA + OP_TYPEEXACT:
1837          case OP_VSPACE_EXTRA + OP_TYPEUPTO:
1838          case OP_VSPACE_EXTRA + OP_TYPEMINUPTO:
1839          case OP_VSPACE_EXTRA + OP_TYPEPOSUPTO:
1840          if (codevalue != OP_VSPACE_EXTRA + OP_TYPEEXACT)
1841            { ADD_ACTIVE(state_offset + 4, 0); }
1842          count = current_state->count;  /* Number already matched */
1843          if (clen > 0)
1844            {
1845            BOOL OK;
1846            switch (c)
1847              {
1848              case 0x000a:
1849              case 0x000b:
1850              case 0x000c:
1851              case 0x000d:
1852              case 0x0085:
1853              case 0x2028:
1854              case 0x2029:
1855              OK = TRUE;
1856              break;
1857    
1858              default:
1859              OK = FALSE;
1860              }
1861    
1862            if (OK == (d == OP_VSPACE))
1863              {
1864              if (codevalue == OP_VSPACE_EXTRA + OP_TYPEPOSUPTO)
1865                {
1866                active_count--;           /* Remove non-match possibility */
1867                next_active_state--;
1868                }
1869              if (++count >= GET2(code, 1))
1870                { ADD_NEW_DATA(-(state_offset + 4), 0, 0); }
1871              else
1872                { ADD_NEW_DATA(-state_offset, count, 0); }
1873              }
1874            }
1875          break;
1876    
1877          /*-----------------------------------------------------------------*/
1878          case OP_HSPACE_EXTRA + OP_TYPEEXACT:
1879          case OP_HSPACE_EXTRA + OP_TYPEUPTO:
1880          case OP_HSPACE_EXTRA + OP_TYPEMINUPTO:
1881          case OP_HSPACE_EXTRA + OP_TYPEPOSUPTO:
1882          if (codevalue != OP_HSPACE_EXTRA + OP_TYPEEXACT)
1883            { ADD_ACTIVE(state_offset + 4, 0); }
1884          count = current_state->count;  /* Number already matched */
1885          if (clen > 0)
1886            {
1887            BOOL OK;
1888            switch (c)
1889              {
1890              case 0x09:      /* HT */
1891              case 0x20:      /* SPACE */
1892              case 0xa0:      /* NBSP */
1893              case 0x1680:    /* OGHAM SPACE MARK */
1894              case 0x180e:    /* MONGOLIAN VOWEL SEPARATOR */
1895              case 0x2000:    /* EN QUAD */
1896              case 0x2001:    /* EM QUAD */
1897              case 0x2002:    /* EN SPACE */
1898              case 0x2003:    /* EM SPACE */
1899              case 0x2004:    /* THREE-PER-EM SPACE */
1900              case 0x2005:    /* FOUR-PER-EM SPACE */
1901              case 0x2006:    /* SIX-PER-EM SPACE */
1902              case 0x2007:    /* FIGURE SPACE */
1903              case 0x2008:    /* PUNCTUATION SPACE */
1904              case 0x2009:    /* THIN SPACE */
1905              case 0x200A:    /* HAIR SPACE */
1906              case 0x202f:    /* NARROW NO-BREAK SPACE */
1907              case 0x205f:    /* MEDIUM MATHEMATICAL SPACE */
1908              case 0x3000:    /* IDEOGRAPHIC SPACE */
1909              OK = TRUE;
1910              break;
1911    
1912              default:
1913              OK = FALSE;
1914              break;
1915              }
1916    
1917            if (OK == (d == OP_HSPACE))
1918              {
1919              if (codevalue == OP_HSPACE_EXTRA + OP_TYPEPOSUPTO)
1920                {
1921                active_count--;           /* Remove non-match possibility */
1922                next_active_state--;
1923                }
1924              if (++count >= GET2(code, 1))
1925                { ADD_NEW_DATA(-(state_offset + 4), 0, 0); }
1926              else
1927                { ADD_NEW_DATA(-state_offset, count, 0); }
1928              }
1929            }
1930          break;
1931    
1932  /* ========================================================================== */  /* ========================================================================== */
1933        /* These opcodes are followed by a character that is usually compared        /* These opcodes are followed by a character that is usually compared
# Line 1018  for (;;) Line 1949  for (;;)
1949          {          {
1950          if (c == d) { ADD_NEW(state_offset + dlen + 1, 0); } else          if (c == d) { ADD_NEW(state_offset + dlen + 1, 0); } else
1951            {            {
1952              unsigned int othercase;
1953            if (c < 128) othercase = fcc[c]; else            if (c < 128) othercase = fcc[c]; else
1954    
1955            /* If we have Unicode property support, we can use it to test the            /* If we have Unicode property support, we can use it to test the
1956            other case of the character, if there is one. The result of            other case of the character. */
           _pcre_ucp_findchar() is < 0 if the char isn't found, and othercase is  
           returned as zero if there isn't another case. */  
1957    
1958  #ifdef SUPPORT_UCP  #ifdef SUPPORT_UCP
1959            if (_pcre_ucp_findchar(c, &chartype, &othercase) < 0)            othercase = UCD_OTHERCASE(c);
1960    #else
1961              othercase = NOTACHAR;
1962  #endif  #endif
             othercase = -1;  
1963    
1964            if (d == othercase) { ADD_NEW(state_offset + dlen + 1, 0); }            if (d == othercase) { ADD_NEW(state_offset + dlen + 1, 0); }
1965            }            }
# Line 1050  for (;;) Line 1981  for (;;)
1981        to wait for them to pass before continuing. */        to wait for them to pass before continuing. */
1982    
1983        case OP_EXTUNI:        case OP_EXTUNI:
1984        if (clen > 0 && _pcre_ucp_findchar(c, &chartype, &othercase) != ucp_M)        if (clen > 0 && UCD_CATEGORY(c) != ucp_M)
1985          {          {
1986          const uschar *nptr = ptr + clen;          const uschar *nptr = ptr + clen;
1987          int ncount = 0;          int ncount = 0;
# Line 1058  for (;;) Line 1989  for (;;)
1989            {            {
1990            int nclen = 1;            int nclen = 1;
1991            GETCHARLEN(c, nptr, nclen);            GETCHARLEN(c, nptr, nclen);
1992            if (_pcre_ucp_findchar(c, &chartype, &othercase) != ucp_M) break;            if (UCD_CATEGORY(c) != ucp_M) break;
1993            ncount++;            ncount++;
1994            nptr += nclen;            nptr += nclen;
1995            }            }
# Line 1068  for (;;) Line 1999  for (;;)
1999  #endif  #endif
2000    
2001        /*-----------------------------------------------------------------*/        /*-----------------------------------------------------------------*/
2002          /* This is a tricky like EXTUNI because it too can match more than one
2003          character (when CR is followed by LF). In this case, set up a negative
2004          state to wait for one character to pass before continuing. */
2005    
2006          case OP_ANYNL:
2007          if (clen > 0) switch(c)
2008            {
2009            case 0x000b:
2010            case 0x000c:
2011            case 0x0085:
2012            case 0x2028:
2013            case 0x2029:
2014            if ((md->moptions & PCRE_BSR_ANYCRLF) != 0) break;
2015    
2016            case 0x000a:
2017            ADD_NEW(state_offset + 1, 0);
2018            break;
2019    
2020            case 0x000d:
2021            if (ptr + 1 < end_subject && ptr[1] == 0x0a)
2022              {
2023              ADD_NEW_DATA(-(state_offset + 1), 0, 1);
2024              }
2025            else
2026              {
2027              ADD_NEW(state_offset + 1, 0);
2028              }
2029            break;
2030            }
2031          break;
2032    
2033          /*-----------------------------------------------------------------*/
2034          case OP_NOT_VSPACE:
2035          if (clen > 0) switch(c)
2036            {
2037            case 0x000a:
2038            case 0x000b:
2039            case 0x000c:
2040            case 0x000d:
2041            case 0x0085:
2042            case 0x2028:
2043            case 0x2029:
2044            break;
2045    
2046            default:
2047            ADD_NEW(state_offset + 1, 0);
2048            break;
2049            }
2050          break;
2051    
2052          /*-----------------------------------------------------------------*/
2053          case OP_VSPACE:
2054          if (clen > 0) switch(c)
2055            {
2056            case 0x000a:
2057            case 0x000b:
2058            case 0x000c:
2059            case 0x000d:
2060            case 0x0085:
2061            case 0x2028:
2062            case 0x2029:
2063            ADD_NEW(state_offset + 1, 0);
2064            break;
2065    
2066            default: break;
2067            }
2068          break;
2069    
2070          /*-----------------------------------------------------------------*/
2071          case OP_NOT_HSPACE:
2072          if (clen > 0) switch(c)
2073            {
2074            case 0x09:      /* HT */
2075            case 0x20:      /* SPACE */
2076            case 0xa0:      /* NBSP */
2077            case 0x1680:    /* OGHAM SPACE MARK */
2078            case 0x180e:    /* MONGOLIAN VOWEL SEPARATOR */
2079            case 0x2000:    /* EN QUAD */
2080            case 0x2001:    /* EM QUAD */
2081            case 0x2002:    /* EN SPACE */
2082            case 0x2003:    /* EM SPACE */
2083            case 0x2004:    /* THREE-PER-EM SPACE */
2084            case 0x2005:    /* FOUR-PER-EM SPACE */
2085            case 0x2006:    /* SIX-PER-EM SPACE */
2086            case 0x2007:    /* FIGURE SPACE */
2087            case 0x2008:    /* PUNCTUATION SPACE */
2088            case 0x2009:    /* THIN SPACE */
2089            case 0x200A:    /* HAIR SPACE */
2090            case 0x202f:    /* NARROW NO-BREAK SPACE */
2091            case 0x205f:    /* MEDIUM MATHEMATICAL SPACE */
2092            case 0x3000:    /* IDEOGRAPHIC SPACE */
2093            break;
2094    
2095            default:
2096            ADD_NEW(state_offset + 1, 0);
2097            break;
2098            }
2099          break;
2100    
2101          /*-----------------------------------------------------------------*/
2102          case OP_HSPACE:
2103          if (clen > 0) switch(c)
2104            {
2105            case 0x09:      /* HT */
2106            case 0x20:      /* SPACE */
2107            case 0xa0:      /* NBSP */
2108            case 0x1680:    /* OGHAM SPACE MARK */
2109            case 0x180e:    /* MONGOLIAN VOWEL SEPARATOR */
2110            case 0x2000:    /* EN QUAD */
2111            case 0x2001:    /* EM QUAD */
2112            case 0x2002:    /* EN SPACE */
2113            case 0x2003:    /* EM SPACE */
2114            case 0x2004:    /* THREE-PER-EM SPACE */
2115            case 0x2005:    /* FOUR-PER-EM SPACE */
2116            case 0x2006:    /* SIX-PER-EM SPACE */
2117            case 0x2007:    /* FIGURE SPACE */
2118            case 0x2008:    /* PUNCTUATION SPACE */
2119            case 0x2009:    /* THIN SPACE */
2120            case 0x200A:    /* HAIR SPACE */
2121            case 0x202f:    /* NARROW NO-BREAK SPACE */
2122            case 0x205f:    /* MEDIUM MATHEMATICAL SPACE */
2123            case 0x3000:    /* IDEOGRAPHIC SPACE */
2124            ADD_NEW(state_offset + 1, 0);
2125            break;
2126            }
2127          break;
2128    
2129          /*-----------------------------------------------------------------*/
2130        /* Match a negated single character. This is only used for one-byte        /* Match a negated single character. This is only used for one-byte
2131        characters, that is, we know that d < 256. The character we are        characters, that is, we know that d < 256. The character we are
2132        checking (c) can be multibyte. */        checking (c) can be multibyte. */
# Line 1075  for (;;) Line 2134  for (;;)
2134        case OP_NOT:        case OP_NOT:
2135        if (clen > 0)        if (clen > 0)
2136          {          {
2137          int otherd = ((ims & PCRE_CASELESS) != 0)? fcc[d] : d;          unsigned int otherd = ((ims & PCRE_CASELESS) != 0)? fcc[d] : d;
2138          if (c != d && c != otherd) { ADD_NEW(state_offset + dlen + 1, 0); }          if (c != d && c != otherd) { ADD_NEW(state_offset + dlen + 1, 0); }
2139          }          }
2140        break;        break;
# Line 1083  for (;;) Line 2142  for (;;)
2142        /*-----------------------------------------------------------------*/        /*-----------------------------------------------------------------*/
2143        case OP_PLUS:        case OP_PLUS:
2144        case OP_MINPLUS:        case OP_MINPLUS:
2145          case OP_POSPLUS:
2146        case OP_NOTPLUS:        case OP_NOTPLUS:
2147        case OP_NOTMINPLUS:        case OP_NOTMINPLUS:
2148          case OP_NOTPOSPLUS:
2149        count = current_state->count;  /* Already matched */        count = current_state->count;  /* Already matched */
2150        if (count > 0) { ADD_ACTIVE(state_offset + dlen + 1, 0); }        if (count > 0) { ADD_ACTIVE(state_offset + dlen + 1, 0); }
2151        if (clen > 0)        if (clen > 0)
2152          {          {
2153          int otherd = -1;          unsigned int otherd = NOTACHAR;
2154          if ((ims & PCRE_CASELESS) != 0)          if ((ims & PCRE_CASELESS) != 0)
2155            {            {
2156  #ifdef SUPPORT_UTF8  #ifdef SUPPORT_UTF8
2157            if (utf8 && c >= 128)            if (utf8 && d >= 128)
2158              {              {
2159  #ifdef SUPPORT_UCP  #ifdef SUPPORT_UCP
2160              if (_pcre_ucp_findchar(d, &chartype, &otherd) < 0) otherd = -1;              otherd = UCD_OTHERCASE(d);
2161  #endif  /* SUPPORT_UCP */  #endif  /* SUPPORT_UCP */
2162              }              }
2163            else            else
# Line 1104  for (;;) Line 2165  for (;;)
2165            otherd = fcc[d];            otherd = fcc[d];
2166            }            }
2167          if ((c == d || c == otherd) == (codevalue < OP_NOTSTAR))          if ((c == d || c == otherd) == (codevalue < OP_NOTSTAR))
2168            { count++; ADD_NEW(state_offset, count); }            {
2169              if (count > 0 &&
2170                  (codevalue == OP_POSPLUS || codevalue == OP_NOTPOSPLUS))
2171                {
2172                active_count--;             /* Remove non-match possibility */
2173                next_active_state--;
2174                }
2175              count++;
2176              ADD_NEW(state_offset, count);
2177              }
2178          }          }
2179        break;        break;
2180    
2181        /*-----------------------------------------------------------------*/        /*-----------------------------------------------------------------*/
2182        case OP_QUERY:        case OP_QUERY:
2183        case OP_MINQUERY:        case OP_MINQUERY:
2184          case OP_POSQUERY:
2185        case OP_NOTQUERY:        case OP_NOTQUERY:
2186        case OP_NOTMINQUERY:        case OP_NOTMINQUERY:
2187          case OP_NOTPOSQUERY:
2188        ADD_ACTIVE(state_offset + dlen + 1, 0);        ADD_ACTIVE(state_offset + dlen + 1, 0);
2189        if (clen > 0)        if (clen > 0)
2190          {          {
2191          int otherd = -1;          unsigned int otherd = NOTACHAR;
2192          if ((ims && PCRE_CASELESS) != 0)          if ((ims & PCRE_CASELESS) != 0)
2193            {            {
2194  #ifdef SUPPORT_UTF8  #ifdef SUPPORT_UTF8
2195            if (utf8 && c >= 128)            if (utf8 && d >= 128)
2196              {              {
2197  #ifdef SUPPORT_UCP  #ifdef SUPPORT_UCP
2198              if (_pcre_ucp_findchar(c, &chartype, &otherd) < 0) otherd = -1;              otherd = UCD_OTHERCASE(d);
2199  #endif  /* SUPPORT_UCP */  #endif  /* SUPPORT_UCP */
2200              }              }
2201            else            else
# Line 1131  for (;;) Line 2203  for (;;)
2203            otherd = fcc[d];            otherd = fcc[d];
2204            }            }
2205          if ((c == d || c == otherd) == (codevalue < OP_NOTSTAR))          if ((c == d || c == otherd) == (codevalue < OP_NOTSTAR))
2206            { ADD_NEW(state_offset + dlen + 1, 0); }            {
2207              if (codevalue == OP_POSQUERY || codevalue == OP_NOTPOSQUERY)
2208                {
2209                active_count--;            /* Remove non-match possibility */
2210                next_active_state--;
2211                }
2212              ADD_NEW(state_offset + dlen + 1, 0);
2213              }
2214          }          }
2215        break;        break;
2216    
2217        /*-----------------------------------------------------------------*/        /*-----------------------------------------------------------------*/
2218        case OP_STAR:        case OP_STAR:
2219        case OP_MINSTAR:        case OP_MINSTAR:
2220          case OP_POSSTAR:
2221        case OP_NOTSTAR:        case OP_NOTSTAR:
2222        case OP_NOTMINSTAR:        case OP_NOTMINSTAR:
2223          case OP_NOTPOSSTAR:
2224        ADD_ACTIVE(state_offset + dlen + 1, 0);        ADD_ACTIVE(state_offset + dlen + 1, 0);
2225        if (clen > 0)        if (clen > 0)
2226          {          {
2227          int otherd = -1;          unsigned int otherd = NOTACHAR;
2228          if ((ims && PCRE_CASELESS) != 0)          if ((ims & PCRE_CASELESS) != 0)
2229            {            {
2230  #ifdef SUPPORT_UTF8  #ifdef SUPPORT_UTF8
2231            if (utf8 && c >= 128)            if (utf8 && d >= 128)
2232              {              {
2233  #ifdef SUPPORT_UCP  #ifdef SUPPORT_UCP
2234              if (_pcre_ucp_findchar(c, &chartype, &otherd) < 0) otherd = -1;              otherd = UCD_OTHERCASE(d);
2235  #endif  /* SUPPORT_UCP */  #endif  /* SUPPORT_UCP */
2236              }              }
2237            else            else
# Line 1158  for (;;) Line 2239  for (;;)
2239            otherd = fcc[d];            otherd = fcc[d];
2240            }            }
2241          if ((c == d || c == otherd) == (codevalue < OP_NOTSTAR))          if ((c == d || c == otherd) == (codevalue < OP_NOTSTAR))
2242            { ADD_NEW(state_offset, 0); }            {
2243              if (codevalue == OP_POSSTAR || codevalue == OP_NOTPOSSTAR)
2244                {
2245                active_count--;            /* Remove non-match possibility */
2246                next_active_state--;
2247                }
2248              ADD_NEW(state_offset, 0);
2249              }
2250          }          }
2251        break;        break;
2252    
2253        /*-----------------------------------------------------------------*/        /*-----------------------------------------------------------------*/
2254        case OP_EXACT:        case OP_EXACT:
2255          case OP_NOTEXACT:
2256          count = current_state->count;  /* Number already matched */
2257          if (clen > 0)
2258            {
2259            unsigned int otherd = NOTACHAR;
2260            if ((ims & PCRE_CASELESS) != 0)
2261              {
2262    #ifdef SUPPORT_UTF8
2263              if (utf8 && d >= 128)
2264                {
2265    #ifdef SUPPORT_UCP
2266                otherd = UCD_OTHERCASE(d);
2267    #endif  /* SUPPORT_UCP */
2268                }
2269              else
2270    #endif  /* SUPPORT_UTF8 */
2271              otherd = fcc[d];
2272              }
2273            if ((c == d || c == otherd) == (codevalue < OP_NOTSTAR))
2274              {
2275              if (++count >= GET2(code, 1))
2276                { ADD_NEW(state_offset + dlen + 3, 0); }
2277              else
2278                { ADD_NEW(state_offset, count); }
2279              }
2280            }
2281          break;
2282    
2283          /*-----------------------------------------------------------------*/
2284        case OP_UPTO:        case OP_UPTO:
2285        case OP_MINUPTO:        case OP_MINUPTO:
2286        case OP_NOTEXACT:        case OP_POSUPTO:
2287        case OP_NOTUPTO:        case OP_NOTUPTO:
2288        case OP_NOTMINUPTO:        case OP_NOTMINUPTO:
2289        if (codevalue != OP_EXACT && codevalue != OP_NOTEXACT)        case OP_NOTPOSUPTO:
2290          { ADD_ACTIVE(state_offset + dlen + 3, 0); }        ADD_ACTIVE(state_offset + dlen + 3, 0);
2291        count = current_state->count;  /* Number already matched */        count = current_state->count;  /* Number already matched */
2292        if (clen > 0)        if (clen > 0)
2293          {          {
2294          int otherd = -1;          unsigned int otherd = NOTACHAR;
2295          if ((ims & PCRE_CASELESS) != 0)          if ((ims & PCRE_CASELESS) != 0)
2296            {            {
2297  #ifdef SUPPORT_UTF8  #ifdef SUPPORT_UTF8
2298            if (utf8 && c >= 128)            if (utf8 && d >= 128)
2299              {              {
2300  #ifdef SUPPORT_UCP  #ifdef SUPPORT_UCP
2301              if (_pcre_ucp_findchar(d, &chartype, &otherd) < 0) otherd = -1;              otherd = UCD_OTHERCASE(d);
2302  #endif  /* SUPPORT_UCP */  #endif  /* SUPPORT_UCP */
2303              }              }
2304            else            else
# Line 1190  for (;;) Line 2307  for (;;)
2307            }            }
2308          if ((c == d || c == otherd) == (codevalue < OP_NOTSTAR))          if ((c == d || c == otherd) == (codevalue < OP_NOTSTAR))
2309            {            {
2310              if (codevalue == OP_POSUPTO || codevalue == OP_NOTPOSUPTO)
2311                {
2312                active_count--;             /* Remove non-match possibility */
2313                next_active_state--;
2314                }
2315            if (++count >= GET2(code, 1))            if (++count >= GET2(code, 1))
2316              { ADD_NEW(state_offset + dlen + 3, 0); }              { ADD_NEW(state_offset + dlen + 3, 0); }
2317            else            else
# Line 1267  for (;;) Line 2389  for (;;)
2389              { ADD_ACTIVE(next_state_offset + 5, 0); }              { ADD_ACTIVE(next_state_offset + 5, 0); }
2390            if (isinclass)            if (isinclass)
2391              {              {
2392              if (++count >= GET2(ecode, 3))              int max = GET2(ecode, 3);
2393                if (++count >= max && max != 0)   /* Max 0 => no limit */
2394                { ADD_NEW(next_state_offset + 5, 0); }                { ADD_NEW(next_state_offset + 5, 0); }
2395              else              else
2396                { ADD_NEW(state_offset, count); }                { ADD_NEW(state_offset, count); }
# Line 1283  for (;;) Line 2406  for (;;)
2406    
2407  /* ========================================================================== */  /* ========================================================================== */
2408        /* These are the opcodes for fancy brackets of various kinds. We have        /* These are the opcodes for fancy brackets of various kinds. We have
2409        to use recursion in order to handle them. */        to use recursion in order to handle them. The "always failing" assertion
2410          (?!) is optimised to OP_FAIL when compiling, so we have to support that,
2411          though the other "backtracking verbs" are not supported. */
2412    
2413          case OP_FAIL:
2414          forced_fail++;    /* Count FAILs for multiple states */
2415          break;
2416    
2417        case OP_ASSERT:        case OP_ASSERT:
2418        case OP_ASSERT_NOT:        case OP_ASSERT_NOT:
# Line 1310  for (;;) Line 2439  for (;;)
2439            rlevel,                               /* function recursion level */            rlevel,                               /* function recursion level */
2440            recursing);                           /* pass on regex recursion */            recursing);                           /* pass on regex recursion */
2441    
2442            if (rc == PCRE_ERROR_DFA_UITEM) return rc;
2443          if ((rc >= 0) == (codevalue == OP_ASSERT || codevalue == OP_ASSERTBACK))          if ((rc >= 0) == (codevalue == OP_ASSERT || codevalue == OP_ASSERTBACK))
2444              { ADD_ACTIVE(endasscode + LINK_SIZE + 1 - start_code, 0); }              { ADD_ACTIVE(endasscode + LINK_SIZE + 1 - start_code, 0); }
2445          }          }
# Line 1317  for (;;) Line 2447  for (;;)
2447    
2448        /*-----------------------------------------------------------------*/        /*-----------------------------------------------------------------*/
2449        case OP_COND:        case OP_COND:
2450          case OP_SCOND:
2451          {          {
2452          int local_offsets[1000];          int local_offsets[1000];
2453          int local_workspace[1000];          int local_workspace[1000];
2454          int condcode = code[LINK_SIZE+1];          int codelink = GET(code, 1);
2455            int condcode;
2456    
2457            /* Because of the way auto-callout works during compile, a callout item
2458            is inserted between OP_COND and an assertion condition. This does not
2459            happen for the other conditions. */
2460    
2461            if (code[LINK_SIZE+1] == OP_CALLOUT)
2462              {
2463              rrc = 0;
2464              if (pcre_callout != NULL)
2465                {
2466                pcre_callout_block cb;
2467                cb.version          = 1;   /* Version 1 of the callout block */
2468                cb.callout_number   = code[LINK_SIZE+2];
2469                cb.offset_vector    = offsets;
2470                cb.subject          = (PCRE_SPTR)start_subject;
2471                cb.subject_length   = end_subject - start_subject;
2472                cb.start_match      = current_subject - start_subject;
2473                cb.current_position = ptr - start_subject;
2474                cb.pattern_position = GET(code, LINK_SIZE + 3);
2475                cb.next_item_length = GET(code, 3 + 2*LINK_SIZE);
2476                cb.capture_top      = 1;
2477                cb.capture_last     = -1;
2478                cb.callout_data     = md->callout_data;
2479                if ((rrc = (*pcre_callout)(&cb)) < 0) return rrc;   /* Abandon */
2480                }
2481              if (rrc > 0) break;                      /* Fail this thread */
2482              code += _pcre_OP_lengths[OP_CALLOUT];    /* Skip callout data */
2483              }
2484    
2485            condcode = code[LINK_SIZE+1];
2486    
2487            /* Back reference conditions are not supported */
2488    
2489          /* The only supported version of OP_CREF is for the value 0xffff, which          if (condcode == OP_CREF || condcode == OP_NCREF)
2490          means "test if in a recursion". */            return PCRE_ERROR_DFA_UCOND;
2491    
2492          if (condcode == OP_CREF)          /* The DEFINE condition is always false */
2493    
2494            if (condcode == OP_DEF)
2495              { ADD_ACTIVE(state_offset + codelink + LINK_SIZE + 1, 0); }
2496    
2497            /* The only supported version of OP_RREF is for the value RREF_ANY,
2498            which means "test if in any recursion". We can't test for specifically
2499            recursed groups. */
2500    
2501            else if (condcode == OP_RREF || condcode == OP_NRREF)
2502            {            {
2503            int value = GET2(code, LINK_SIZE+2);            int value = GET2(code, LINK_SIZE+2);
2504            if (value != 0xffff) return PCRE_ERROR_DFA_UCOND;            if (value != RREF_ANY) return PCRE_ERROR_DFA_UCOND;
2505            if (recursing > 0) { ADD_ACTIVE(state_offset + LINK_SIZE + 4, 0); }            if (recursing > 0)
2506              else { ADD_ACTIVE(state_offset + GET(code, 1) + LINK_SIZE + 1, 0); }              { ADD_ACTIVE(state_offset + LINK_SIZE + 4, 0); }
2507              else { ADD_ACTIVE(state_offset + codelink + LINK_SIZE + 1, 0); }
2508            }            }
2509    
2510          /* Otherwise, the condition is an assertion */          /* Otherwise, the condition is an assertion */
# Line 1356  for (;;) Line 2530  for (;;)
2530              rlevel,                               /* function recursion level */              rlevel,                               /* function recursion level */
2531              recursing);                           /* pass on regex recursion */              recursing);                           /* pass on regex recursion */
2532    
2533              if (rc == PCRE_ERROR_DFA_UITEM) return rc;
2534            if ((rc >= 0) ==            if ((rc >= 0) ==
2535                  (condcode == OP_ASSERT || condcode == OP_ASSERTBACK))                  (condcode == OP_ASSERT || condcode == OP_ASSERTBACK))
2536              { ADD_ACTIVE(endasscode + LINK_SIZE + 1 - start_code, 0); }              { ADD_ACTIVE(endasscode + LINK_SIZE + 1 - start_code, 0); }
2537            else            else
2538              { ADD_ACTIVE(state_offset + GET(code, 1) + LINK_SIZE + 1, 0); }              { ADD_ACTIVE(state_offset + codelink + LINK_SIZE + 1, 0); }
2539            }            }
2540          }          }
2541        break;        break;
# Line 1512  for (;;) Line 2687  for (;;)
2687        /* Handle callouts */        /* Handle callouts */
2688    
2689        case OP_CALLOUT:        case OP_CALLOUT:
2690          rrc = 0;
2691        if (pcre_callout != NULL)        if (pcre_callout != NULL)
2692          {          {
         int rrc;  
2693          pcre_callout_block cb;          pcre_callout_block cb;
2694          cb.version          = 1;   /* Version 1 of the callout block */          cb.version          = 1;   /* Version 1 of the callout block */
2695          cb.callout_number   = code[1];          cb.callout_number   = code[1];
2696          cb.offset_vector    = offsets;          cb.offset_vector    = offsets;
2697          cb.subject          = (char *)start_subject;          cb.subject          = (PCRE_SPTR)start_subject;
2698          cb.subject_length   = end_subject - start_subject;          cb.subject_length   = end_subject - start_subject;
2699          cb.start_match      = current_subject - start_subject;          cb.start_match      = current_subject - start_subject;
2700          cb.current_position = ptr - start_subject;          cb.current_position = ptr - start_subject;
# Line 1529  for (;;) Line 2704  for (;;)
2704          cb.capture_last     = -1;          cb.capture_last     = -1;
2705          cb.callout_data     = md->callout_data;          cb.callout_data     = md->callout_data;
2706          if ((rrc = (*pcre_callout)(&cb)) < 0) return rrc;   /* Abandon */          if ((rrc = (*pcre_callout)(&cb)) < 0) return rrc;   /* Abandon */
         if (rrc == 0) { ADD_ACTIVE(state_offset + 2 + 2*LINK_SIZE, 0); }  
2707          }          }
2708          if (rrc == 0)
2709            { ADD_ACTIVE(state_offset + _pcre_OP_lengths[OP_CALLOUT], 0); }
2710        break;        break;
2711    
2712    
# Line 1546  for (;;) Line 2722  for (;;)
2722    /* We have finished the processing at the current subject character. If no    /* We have finished the processing at the current subject character. If no
2723    new states have been set for the next character, we have found all the    new states have been set for the next character, we have found all the
2724    matches that we are going to find. If we are at the top level and partial    matches that we are going to find. If we are at the top level and partial
2725    matching has been requested, check for appropriate conditions. */    matching has been requested, check for appropriate conditions.
2726    
2727      The "forced_ fail" variable counts the number of (*F) encountered for the
2728      character. If it is equal to the original active_count (saved in
2729      workspace[1]) it means that (*F) was found on every active state. In this
2730      case we don't want to give a partial match.
2731    
2732      The "could_continue" variable is true if a state could have continued but
2733      for the fact that the end of the subject was reached. */
2734    
2735    if (new_count <= 0)    if (new_count <= 0)
2736      {      {
2737      if (match_count < 0 &&                     /* No matches found */      if (rlevel == 1 &&                               /* Top level, and */
2738          rlevel == 1 &&                         /* Top level match function */          could_continue &&                            /* Some could go on */
2739          (md->moptions & PCRE_PARTIAL) != 0 &&  /* Want partial matching */          forced_fail != workspace[1] &&               /* Not all forced fail & */
2740          ptr >= end_subject &&                  /* Reached end of subject */          (                                            /* either... */
2741          ptr > current_subject)                 /* Matched non-empty string */          (md->moptions & PCRE_PARTIAL_HARD) != 0      /* Hard partial */
2742            ||                                           /* or... */
2743            ((md->moptions & PCRE_PARTIAL_SOFT) != 0 &&  /* Soft partial and */
2744             match_count < 0)                            /* no matches */
2745            ) &&                                         /* And... */
2746            ptr >= end_subject &&                     /* Reached end of subject */
2747            ptr > current_subject)                    /* Matched non-empty string */
2748        {        {
2749        if (offsetcount >= 2)        if (offsetcount >= 2)
2750          {          {
2751          offsets[0] = current_subject - start_subject;          offsets[0] = md->start_used_ptr - start_subject;
2752          offsets[1] = end_subject - start_subject;          offsets[1] = end_subject - start_subject;
2753          }          }
2754        match_count = PCRE_ERROR_PARTIAL;        match_count = PCRE_ERROR_PARTIAL;
# Line 1567  for (;;) Line 2757  for (;;)
2757      DPRINTF(("%.*sEnd of internal_dfa_exec %d: returning %d\n"      DPRINTF(("%.*sEnd of internal_dfa_exec %d: returning %d\n"
2758        "%.*s---------------------\n\n", rlevel*2-2, SP, rlevel, match_count,        "%.*s---------------------\n\n", rlevel*2-2, SP, rlevel, match_count,
2759        rlevel*2-2, SP));        rlevel*2-2, SP));
2760      return match_count;      break;        /* In effect, "return", but see the comment below */
2761      }      }
2762    
2763    /* One or more states are active for the next character. */    /* One or more states are active for the next character. */
# Line 1575  for (;;) Line 2765  for (;;)
2765    ptr += clen;    /* Advance to next subject character */    ptr += clen;    /* Advance to next subject character */
2766    }               /* Loop to move along the subject string */    }               /* Loop to move along the subject string */
2767    
2768  /* Control never gets here, but we must keep the compiler happy. */  /* Control gets here from "break" a few lines above. We do it this way because
2769    if we use "return" above, we have compiler trouble. Some compilers warn if
2770    there's nothing here because they think the function doesn't return a value. On
2771    the other hand, if we put a dummy statement here, some more clever compilers
2772    complain that it can't be reached. Sigh. */
2773    
2774  DPRINTF(("%.*s+++ Unexpected end of internal_dfa_exec %d +++\n"  return match_count;
   "%.*s---------------------\n\n", rlevel*2-2, SP, rlevel, rlevel*2-2, SP));  
 return PCRE_ERROR_NOMATCH;  
2775  }  }
2776    
2777    
# Line 1595  is not anchored. Line 2787  is not anchored.
2787    
2788  Arguments:  Arguments:
2789    argument_re     points to the compiled expression    argument_re     points to the compiled expression
2790    extra_data      points to extra data or is NULL (not currently used)    extra_data      points to extra data or is NULL
2791    subject         points to the subject string    subject         points to the subject string
2792    length          length of subject string (may contain binary zeros)    length          length of subject string (may contain binary zeros)
2793    start_offset    where to start in the subject string    start_offset    where to start in the subject string
# Line 1611  Returns:          > 0 => number of match Line 2803  Returns:          > 0 => number of match
2803                   < -1 => some kind of unexpected problem                   < -1 => some kind of unexpected problem
2804  */  */
2805    
2806  PCRE_EXPORT int  PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
2807  pcre_dfa_exec(const pcre *argument_re, const pcre_extra *extra_data,  pcre_dfa_exec(const pcre *argument_re, const pcre_extra *extra_data,
2808    const char *subject, int length, int start_offset, int options, int *offsets,    const char *subject, int length, int start_offset, int options, int *offsets,
2809    int offsetcount, int *workspace, int wscount)    int offsetcount, int *workspace, int wscount)
2810  {  {
2811  real_pcre *re = (real_pcre *)argument_re;  real_pcre *re = (real_pcre *)argument_re;
2812  dfa_match_data match_block;  dfa_match_data match_block;
2813    dfa_match_data *md = &match_block;
2814  BOOL utf8, anchored, startline, firstline;  BOOL utf8, anchored, startline, firstline;
2815  const uschar *current_subject, *end_subject, *lcc;  const uschar *current_subject, *end_subject, *lcc;
2816    
# Line 1632  BOOL req_byte_caseless = FALSE; Line 2825  BOOL req_byte_caseless = FALSE;
2825  int first_byte = -1;  int first_byte = -1;
2826  int req_byte = -1;  int req_byte = -1;
2827  int req_byte2 = -1;  int req_byte2 = -1;
2828    int newline;
2829    
2830  /* Plausibility checks */  /* Plausibility checks */
2831    
# Line 1646  flipping, so we scan the extra_data bloc Line 2840  flipping, so we scan the extra_data bloc
2840  match block, so we must initialize them beforehand. However, the other fields  match block, so we must initialize them beforehand. However, the other fields
2841  in the match block must not be set until after the byte flipping. */  in the match block must not be set until after the byte flipping. */
2842    
2843  match_block.tables = re->tables;  md->tables = re->tables;
2844  match_block.callout_data = NULL;  md->callout_data = NULL;
2845    
2846  if (extra_data != NULL)  if (extra_data != NULL)
2847    {    {
# Line 1655  if (extra_data != NULL) Line 2849  if (extra_data != NULL)
2849    if ((flags & PCRE_EXTRA_STUDY_DATA) != 0)    if ((flags & PCRE_EXTRA_STUDY_DATA) != 0)
2850      study = (const pcre_study_data *)extra_data->study_data;      study = (const pcre_study_data *)extra_data->study_data;
2851    if ((flags & PCRE_EXTRA_MATCH_LIMIT) != 0) return PCRE_ERROR_DFA_UMLIMIT;    if ((flags & PCRE_EXTRA_MATCH_LIMIT) != 0) return PCRE_ERROR_DFA_UMLIMIT;
2852      if ((flags & PCRE_EXTRA_MATCH_LIMIT_RECURSION) != 0)
2853        return PCRE_ERROR_DFA_UMLIMIT;
2854    if ((flags & PCRE_EXTRA_CALLOUT_DATA) != 0)    if ((flags & PCRE_EXTRA_CALLOUT_DATA) != 0)
2855      match_block.callout_data = extra_data->callout_data;      md->callout_data = extra_data->callout_data;
2856    if ((flags & PCRE_EXTRA_TABLES) != 0)    if ((flags & PCRE_EXTRA_TABLES) != 0)
2857      match_block.tables = extra_data->tables;      md->tables = extra_data->tables;
2858    }    }
2859    
2860  /* Check that the first field in the block is the magic number. If it is not,  /* Check that the first field in the block is the magic number. If it is not,
# Line 1679  current_subject = (const unsigned char * Line 2875  current_subject = (const unsigned char *
2875  end_subject = (const unsigned char *)subject + length;  end_subject = (const unsigned char *)subject + length;
2876  req_byte_ptr = current_subject - 1;  req_byte_ptr = current_subject - 1;
2877    
2878    #ifdef SUPPORT_UTF8
2879  utf8 = (re->options & PCRE_UTF8) != 0;  utf8 = (re->options & PCRE_UTF8) != 0;
2880  anchored = (options & PCRE_ANCHORED) != 0 || (re->options & PCRE_ANCHORED) != 0;  #else
2881    utf8 = FALSE;
2882    #endif
2883    
2884    anchored = (options & (PCRE_ANCHORED|PCRE_DFA_RESTART)) != 0 ||
2885      (re->options & PCRE_ANCHORED) != 0;
2886    
2887  /* The remaining fixed data for passing around. */  /* The remaining fixed data for passing around. */
2888    
2889  match_block.start_code = (const uschar *)argument_re +  md->start_code = (const uschar *)argument_re +
2890      re->name_table_offset + re->name_count * re->name_entry_size;      re->name_table_offset + re->name_count * re->name_entry_size;
2891  match_block.start_subject = (const unsigned char *)subject;  md->start_subject = (const unsigned char *)subject;
2892  match_block.end_subject = end_subject;  md->end_subject = end_subject;
2893  match_block.moptions = options;  md->start_offset = start_offset;
2894  match_block.poptions = re->options;  md->moptions = options;
2895    md->poptions = re->options;
2896    
2897    /* If the BSR option is not set at match time, copy what was set
2898    at compile time. */
2899    
2900    if ((md->moptions & (PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE)) == 0)
2901      {
2902      if ((re->options & (PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE)) != 0)
2903        md->moptions |= re->options & (PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE);
2904    #ifdef BSR_ANYCRLF
2905      else md->moptions |= PCRE_BSR_ANYCRLF;
2906    #endif
2907      }
2908    
2909    /* Handle different types of newline. The three bits give eight cases. If
2910    nothing is set at run time, whatever was used at compile time applies. */
2911    
2912    switch ((((options & PCRE_NEWLINE_BITS) == 0)? re->options : (pcre_uint32)options) &
2913             PCRE_NEWLINE_BITS)
2914      {
2915      case 0: newline = NEWLINE; break;   /* Compile-time default */
2916      case PCRE_NEWLINE_CR: newline = CHAR_CR; break;
2917      case PCRE_NEWLINE_LF: newline = CHAR_NL; break;
2918      case PCRE_NEWLINE_CR+
2919           PCRE_NEWLINE_LF: newline = (CHAR_CR << 8) | CHAR_NL; break;
2920      case PCRE_NEWLINE_ANY: newline = -1; break;
2921      case PCRE_NEWLINE_ANYCRLF: newline = -2; break;
2922      default: return PCRE_ERROR_BADNEWLINE;
2923      }
2924    
2925    if (newline == -2)
2926      {
2927      md->nltype = NLTYPE_ANYCRLF;
2928      }
2929    else if (newline < 0)
2930      {
2931      md->nltype = NLTYPE_ANY;
2932      }
2933    else
2934      {
2935      md->nltype = NLTYPE_FIXED;
2936      if (newline > 255)
2937        {
2938        md->nllen = 2;
2939        md->nl[0] = (newline >> 8) & 255;
2940        md->nl[1] = newline & 255;
2941        }
2942      else
2943        {
2944        md->nllen = 1;
2945        md->nl[0] = newline;
2946        }
2947      }
2948    
2949  /* Check a UTF-8 string if required. Unfortunately there's no way of passing  /* Check a UTF-8 string if required. Unfortunately there's no way of passing
2950  back the character offset. */  back the character offset. */
# Line 1715  if (utf8 && (options & PCRE_NO_UTF8_CHEC Line 2970  if (utf8 && (options & PCRE_NO_UTF8_CHEC
2970  is a feature that makes it possible to save compiled regex and re-use them  is a feature that makes it possible to save compiled regex and re-use them
2971  in other programs later. */  in other programs later. */
2972    
2973  if (match_block.tables == NULL) match_block.tables = _pcre_default_tables;  if (md->tables == NULL) md->tables = _pcre_default_tables;
2974    
2975  /* The lower casing table and the "must be at the start of a line" flag are  /* The lower casing table and the "must be at the start of a line" flag are
2976  used in a loop when finding where to start. */  used in a loop when finding where to start. */
2977    
2978  lcc = match_block.tables + lcc_offset;  lcc = md->tables + lcc_offset;
2979  startline = (re->options & PCRE_STARTLINE) != 0;  startline = (re->flags & PCRE_STARTLINE) != 0;
2980  firstline = (re->options & PCRE_FIRSTLINE) != 0;  firstline = (re->options & PCRE_FIRSTLINE) != 0;
2981    
2982  /* Set up the first character to match, if available. The first_byte value is  /* Set up the first character to match, if available. The first_byte value is
# Line 1732  studied, there may be a bitmap of possib Line 2987  studied, there may be a bitmap of possib
2987    
2988  if (!anchored)  if (!anchored)
2989    {    {
2990    if ((re->options & PCRE_FIRSTSET) != 0)    if ((re->flags & PCRE_FIRSTSET) != 0)
2991      {      {
2992      first_byte = re->first_byte & 255;      first_byte = re->first_byte & 255;
2993      if ((first_byte_caseless = ((re->first_byte & REQ_CASELESS) != 0)) == TRUE)      if ((first_byte_caseless = ((re->first_byte & REQ_CASELESS) != 0)) == TRUE)
# Line 1740  if (!anchored) Line 2995  if (!anchored)
2995      }      }
2996    else    else
2997      {      {
2998      if (startline && study != NULL &&      if (!startline && study != NULL &&
2999           (study->options & PCRE_STUDY_MAPPED) != 0)           (study->flags & PCRE_STUDY_MAPPED) != 0)
3000        start_bits = study->start_bits;        start_bits = study->start_bits;
3001      }      }
3002    }    }
# Line 1749  if (!anchored) Line 3004  if (!anchored)
3004  /* For anchored or unanchored matches, there may be a "last known required  /* For anchored or unanchored matches, there may be a "last known required
3005  character" set. */  character" set. */
3006    
3007  if ((re->options & PCRE_REQCHSET) != 0)  if ((re->flags & PCRE_REQCHSET) != 0)
3008    {    {
3009    req_byte = re->req_byte & 255;    req_byte = re->req_byte & 255;
3010    req_byte_caseless = (re->req_byte & REQ_CASELESS) != 0;    req_byte_caseless = (re->req_byte & REQ_CASELESS) != 0;
3011    req_byte2 = (match_block.tables + fcc_offset)[req_byte];  /* case flipped */    req_byte2 = (md->tables + fcc_offset)[req_byte];  /* case flipped */
3012    }    }
3013    
3014  /* Call the main matching function, looping for a non-anchored regex after a  /* Call the main matching function, looping for a non-anchored regex after a
3015  failed match. Unless restarting, optimize by moving to the first match  failed match. If not restarting, perform certain optimizations at the start of
3016  character if possible, when not anchored. Then unless wanting a partial match,  a match. */
 check for a required later character. */  
3017    
3018  for (;;)  for (;;)
3019    {    {
# Line 1769  for (;;) Line 3023  for (;;)
3023      {      {
3024      const uschar *save_end_subject = end_subject;      const uschar *save_end_subject = end_subject;
3025    
3026      /* Advance to a unique first char if possible. If firstline is TRUE, the      /* If firstline is TRUE, the start of the match is constrained to the first
3027      start of the match is constrained to the first line of a multiline string.      line of a multiline string. Implement this by temporarily adjusting
3028      Implement this by temporarily adjusting end_subject so that we stop scanning      end_subject so that we stop scanning at a newline. If the match fails at
3029      at a newline. If the match fails at the newline, later code breaks this loop.      the newline, later code breaks this loop. */
     */  
3030    
3031      if (firstline)      if (firstline)
3032        {        {
3033        const uschar *t = current_subject;        USPTR t = current_subject;
3034        while (t < save_end_subject && *t != '\n') t++;  #ifdef SUPPORT_UTF8
3035          if (utf8)
3036            {
3037            while (t < md->end_subject && !IS_NEWLINE(t))
3038              {
3039              t++;
3040              while (t < end_subject && (*t & 0xc0) == 0x80) t++;
3041              }
3042            }
3043          else
3044    #endif
3045          while (t < md->end_subject && !IS_NEWLINE(t)) t++;
3046        end_subject = t;        end_subject = t;
3047        }        }
3048    
3049      if (first_byte >= 0)      /* There are some optimizations that avoid running the match if a known
3050        starting point is not found. However, there is an option that disables
3051        these, for testing and for ensuring that all callouts do actually occur. */
3052    
3053        if ((options & PCRE_NO_START_OPTIMIZE) == 0)
3054        {        {
3055        if (first_byte_caseless)        /* Advance to a known first byte. */
         while (current_subject < end_subject &&  
                lcc[*current_subject] != first_byte)  
           current_subject++;  
       else  
         while (current_subject < end_subject && *current_subject != first_byte)  
           current_subject++;  
       }  
3056    
3057      /* Or to just after \n for a multiline match if possible */        if (first_byte >= 0)
3058            {
3059            if (first_byte_caseless)
3060              while (current_subject < end_subject &&
3061                     lcc[*current_subject] != first_byte)
3062                current_subject++;
3063            else
3064              while (current_subject < end_subject &&
3065                     *current_subject != first_byte)
3066                current_subject++;
3067            }
3068    
3069      else if (startline)        /* Or to just after a linebreak for a multiline match if possible */
3070        {  
3071        if (current_subject > match_block.start_subject + start_offset)        else if (startline)
3072          {          {
3073          while (current_subject < end_subject && current_subject[-1] != NEWLINE)          if (current_subject > md->start_subject + start_offset)
3074            current_subject++;            {
3075    #ifdef SUPPORT_UTF8
3076              if (utf8)
3077                {
3078                while (current_subject < end_subject &&
3079                       !WAS_NEWLINE(current_subject))
3080                  {
3081                  current_subject++;
3082                  while(current_subject < end_subject &&
3083                        (*current_subject & 0xc0) == 0x80)
3084                    current_subject++;
3085                  }
3086                }
3087              else
3088    #endif
3089              while (current_subject < end_subject && !WAS_NEWLINE(current_subject))
3090                current_subject++;
3091    
3092              /* If we have just passed a CR and the newline option is ANY or
3093              ANYCRLF, and we are now at a LF, advance the match position by one
3094              more character. */
3095    
3096              if (current_subject[-1] == CHAR_CR &&
3097                   (md->nltype == NLTYPE_ANY || md->nltype == NLTYPE_ANYCRLF) &&
3098                   current_subject < end_subject &&
3099                   *current_subject == CHAR_NL)
3100                current_subject++;
3101              }
3102          }          }
       }  
3103    
3104      /* Or to a non-unique first char after study */        /* Or to a non-unique first char after study */
3105    
3106      else if (start_bits != NULL)        else if (start_bits != NULL)
       {  
       while (current_subject < end_subject)  
3107          {          {
3108          register unsigned int c = *current_subject;          while (current_subject < end_subject)
3109          if ((start_bits[c/8] & (1 << (c&7))) == 0) current_subject++;            {
3110            else break;            register unsigned int c = *current_subject;
3111              if ((start_bits[c/8] & (1 << (c&7))) == 0) current_subject++;
3112                else break;
3113              }
3114          }          }
3115        }        }
3116    
3117      /* Restore fudged end_subject */      /* Restore fudged end_subject */
3118    
3119      end_subject = save_end_subject;      end_subject = save_end_subject;
     }  
3120    
3121    /* If req_byte is set, we know that that character must appear in the subject      /* The following two optimizations are disabled for partial matching or if
3122    for the match to succeed. If the first character is set, req_byte must be      disabling is explicitly requested (and of course, by the test above, this
3123    later in the subject; otherwise the test starts at the match point. This      code is not obeyed when restarting after a partial match). */
   optimization can save a huge amount of work in patterns with nested unlimited  
   repeats that aren't going to match. Writing separate code for cased/caseless  
   versions makes it go faster, as does using an autoincrement and backing off  
   on a match.  
   
   HOWEVER: when the subject string is very, very long, searching to its end can  
   take a long time, and give bad performance on quite ordinary patterns. This  
   showed up when somebody was matching /^C/ on a 32-megabyte string... so we  
   don't do this when the string is sufficiently long.  
   
   ALSO: this processing is disabled when partial matching is requested.  
   */  
   
   if (req_byte >= 0 &&  
       end_subject - current_subject < REQ_BYTE_MAX &&  
       (options & PCRE_PARTIAL) == 0)  
     {  
     register const uschar *p = current_subject + ((first_byte >= 0)? 1 : 0);  
3124    
3125      /* We don't need to repeat the search if we haven't yet reached the      if ((options & PCRE_NO_START_OPTIMIZE) == 0 &&
3126      place we found it at last time. */          (options & (PCRE_PARTIAL_HARD|PCRE_PARTIAL_SOFT)) == 0)
   
     if (p > req_byte_ptr)  
3127        {        {
3128        if (req_byte_caseless)        /* If the pattern was studied, a minimum subject length may be set. This
3129          is a lower bound; no actual string of that length may actually match the
3130          pattern. Although the value is, strictly, in characters, we treat it as
3131          bytes to avoid spending too much time in this optimization. */
3132    
3133          if (study != NULL && (study->flags & PCRE_STUDY_MINLEN) != 0 &&
3134              (pcre_uint32)(end_subject - current_subject) < study->minlength)
3135            return PCRE_ERROR_NOMATCH;
3136    
3137          /* If req_byte is set, we know that that character must appear in the
3138          subject for the match to succeed. If the first character is set, req_byte
3139          must be later in the subject; otherwise the test starts at the match
3140          point. This optimization can save a huge amount of work in patterns with
3141          nested unlimited repeats that aren't going to match. Writing separate
3142          code for cased/caseless versions makes it go faster, as does using an
3143          autoincrement and backing off on a match.
3144    
3145          HOWEVER: when the subject string is very, very long, searching to its end
3146          can take a long time, and give bad performance on quite ordinary
3147          patterns. This showed up when somebody was matching /^C/ on a 32-megabyte
3148          string... so we don't do this when the string is sufficiently long. */
3149    
3150          if (req_byte >= 0 && end_subject - current_subject < REQ_BYTE_MAX)
3151          {          {
3152          while (p < end_subject)          register const uschar *p = current_subject + ((first_byte >= 0)? 1 : 0);
3153            {  
3154            register int pp = *p++;          /* We don't need to repeat the search if we haven't yet reached the
3155            if (pp == req_byte || pp == req_byte2) { p--; break; }          place we found it at last time. */
3156            }  
3157          }          if (p > req_byte_ptr)
       else  
         {  
         while (p < end_subject)  
3158            {            {
3159            if (*p++ == req_byte) { p--; break; }            if (req_byte_caseless)
3160            }              {
3161          }              while (p < end_subject)
3162                  {
3163                  register int pp = *p++;
3164                  if (pp == req_byte || pp == req_byte2) { p--; break; }
3165                  }
3166                }
3167              else
3168                {
3169                while (p < end_subject)
3170                  {
3171                  if (*p++ == req_byte) { p--; break; }
3172                  }
3173                }
3174    
3175        /* If we can't find the required character, break the matching loop,            /* If we can't find the required character, break the matching loop,
3176        which will cause a return or PCRE_ERROR_NOMATCH. */            which will cause a return or PCRE_ERROR_NOMATCH. */
3177    
3178        if (p >= end_subject) break;            if (p >= end_subject) break;
3179    
3180        /* If we have found the required character, save the point where we            /* If we have found the required character, save the point where we
3181        found it, so that we don't search again next time round the loop if            found it, so that we don't search again next time round the loop if
3182        the start hasn't passed this character yet. */            the start hasn't passed this character yet. */
3183    
3184        req_byte_ptr = p;            req_byte_ptr = p;
3185              }
3186            }
3187        }        }
3188      }      }   /* End of optimizations that are done when not restarting */
3189    
3190    /* OK, now we can do the business */    /* OK, now we can do the business */
3191    
3192      md->start_used_ptr = current_subject;
3193    
3194    rc = internal_dfa_exec(    rc = internal_dfa_exec(
3195      &match_block,                              /* fixed match data */      md,                                /* fixed match data */
3196      match_block.start_code,                    /* this subexpression's code */      md->start_code,                    /* this subexpression's code */
3197      current_subject,                           /* where we currently are */      current_subject,                   /* where we currently are */
3198      start_offset,                              /* start offset in subject */      start_offset,                      /* start offset in subject */
3199      offsets,                                   /* offset vector */      offsets,                           /* offset vector */
3200      offsetcount,                               /* size of same */      offsetcount,                       /* size of same */
3201      workspace,                                 /* workspace vector */      workspace,                         /* workspace vector */
3202      wscount,                                   /* size of same */      wscount,                           /* size of same */
3203      re->options & (PCRE_CASELESS|PCRE_MULTILINE|PCRE_DOTALL), /* ims flags */      re->options & (PCRE_CASELESS|PCRE_MULTILINE|PCRE_DOTALL), /* ims flags */
3204      0,                                         /* function recurse level */      0,                                 /* function recurse level */
3205      0);                                        /* regex recurse level */      0);                                /* regex recurse level */
3206    
3207    /* Anything other than "no match" means we are done, always; otherwise, carry    /* Anything other than "no match" means we are done, always; otherwise, carry
3208    on only if not anchored. */    on only if not anchored. */
# Line 1900  for (;;) Line 3212  for (;;)
3212    /* Advance to the next subject character unless we are at the end of a line    /* Advance to the next subject character unless we are at the end of a line
3213    and firstline is set. */    and firstline is set. */
3214    
3215    if (firstline && *current_subject == NEWLINE) break;    if (firstline && IS_NEWLINE(current_subject)) break;
3216    current_subject++;    current_subject++;
   
 #ifdef SUPPORT_UTF8  
3217    if (utf8)    if (utf8)
3218      {      {
3219      while (current_subject < end_subject && (*current_subject & 0xc0) == 0x80)      while (current_subject < end_subject && (*current_subject & 0xc0) == 0x80)
3220        current_subject++;        current_subject++;
3221      }      }
 #endif  
   
3222    if (current_subject > end_subject) break;    if (current_subject > end_subject) break;
3223    }  
3224      /* If we have just passed a CR and we are now at a LF, and the pattern does
3225      not contain any explicit matches for \r or \n, and the newline option is CRLF
3226      or ANY or ANYCRLF, advance the match position by one more character. */
3227    
3228      if (current_subject[-1] == CHAR_CR &&
3229          current_subject < end_subject &&
3230          *current_subject == CHAR_NL &&
3231          (re->flags & PCRE_HASCRORLF) == 0 &&
3232            (md->nltype == NLTYPE_ANY ||
3233             md->nltype == NLTYPE_ANYCRLF ||
3234             md->nllen == 2))
3235        current_subject++;
3236    
3237      }   /* "Bumpalong" loop */
3238    
3239  return PCRE_ERROR_NOMATCH;  return PCRE_ERROR_NOMATCH;
3240  }  }

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