/[pcre]/code/trunk/pcretest.c
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revision 29 by nigel, Sat Feb 24 21:38:53 2007 UTC revision 55 by nigel, Sat Feb 24 21:39:46 2007 UTC
# Line 12  Line 12 
12  /* Use the internal info for displaying the results of pcre_study(). */  /* Use the internal info for displaying the results of pcre_study(). */
13    
14  #include "internal.h"  #include "internal.h"
15    
16    /* It is possible to compile this test program without including support for
17    testing the POSIX interface, though this is not available via the standard
18    Makefile. */
19    
20    #if !defined NOPOSIX
21  #include "pcreposix.h"  #include "pcreposix.h"
22    #endif
23    
24  #ifndef CLOCKS_PER_SEC  #ifndef CLOCKS_PER_SEC
25  #ifdef CLK_TCK  #ifdef CLK_TCK
# Line 27  Line 34 
34    
35  static FILE *outfile;  static FILE *outfile;
36  static int log_store = 0;  static int log_store = 0;
37    static size_t gotten_store;
38    
39    
40    
41    static int utf8_table1[] = {
42      0x0000007f, 0x000007ff, 0x0000ffff, 0x001fffff, 0x03ffffff, 0x7fffffff};
43    
44    static int utf8_table2[] = {
45      0, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc};
46    
47    static int utf8_table3[] = {
48      0xff, 0x1f, 0x0f, 0x07, 0x03, 0x01};
49    
50    
51    /*************************************************
52    *       Convert character value to UTF-8         *
53    *************************************************/
54    
55    /* This function takes an integer value in the range 0 - 0x7fffffff
56    and encodes it as a UTF-8 character in 0 to 6 bytes.
57    
58    Arguments:
59      cvalue     the character value
60      buffer     pointer to buffer for result - at least 6 bytes long
61    
62    Returns:     number of characters placed in the buffer
63                 -1 if input character is negative
64                 0 if input character is positive but too big (only when
65                 int is longer than 32 bits)
66    */
67    
68    static int
69    ord2utf8(int cvalue, unsigned char *buffer)
70    {
71    register int i, j;
72    for (i = 0; i < sizeof(utf8_table1)/sizeof(int); i++)
73      if (cvalue <= utf8_table1[i]) break;
74    if (i >= sizeof(utf8_table1)/sizeof(int)) return 0;
75    if (cvalue < 0) return -1;
76    *buffer++ = utf8_table2[i] | (cvalue & utf8_table3[i]);
77    cvalue >>= 6 - i;
78    for (j = 0; j < i; j++)
79      {
80      *buffer++ = 0x80 | (cvalue & 0x3f);
81      cvalue >>= 6;
82      }
83    return i + 1;
84    }
85    
86    
87    /*************************************************
88    *            Convert UTF-8 string to value       *
89    *************************************************/
90    
91    /* This function takes one or more bytes that represents a UTF-8 character,
92    and returns the value of the character.
93    
94    Argument:
95      buffer   a pointer to the byte vector
96      vptr     a pointer to an int to receive the value
97    
98    Returns:   >  0 => the number of bytes consumed
99               -6 to 0 => malformed UTF-8 character at offset = (-return)
100    */
101    
102    int
103    utf82ord(unsigned char *buffer, int *vptr)
104    {
105    int c = *buffer++;
106    int d = c;
107    int i, j, s;
108    
109    for (i = -1; i < 6; i++)               /* i is number of additional bytes */
110      {
111      if ((d & 0x80) == 0) break;
112      d <<= 1;
113      }
114    
115    if (i == -1) { *vptr = c; return 1; }  /* ascii character */
116    if (i == 0 || i == 6) return 0;        /* invalid UTF-8 */
117    
118    /* i now has a value in the range 1-5 */
119    
120    d = c & utf8_table3[i];
121    s = 6 - i;
122    
123    for (j = 0; j < i; j++)
124      {
125      c = *buffer++;
126      if ((c & 0xc0) != 0x80) return -(j+1);
127      d |= (c & 0x3f) << s;
128      s += 6;
129      }
130    
131    /* Check that encoding was the correct unique one */
132    
133    for (j = 0; j < sizeof(utf8_table1)/sizeof(int); j++)
134      if (d <= utf8_table1[j]) break;
135    if (j != i) return -(i+1);
136    
137    /* Valid value */
138    
139    *vptr = d;
140    return i+1;
141    }
142    
143    
144    
145    
146    
147    
# Line 41  static const char *OP_names[] = { Line 156  static const char *OP_names[] = {
156    "*", "*?", "+", "+?", "?", "??", "{", "{", "{",    "*", "*?", "+", "+?", "?", "??", "{", "{", "{",
157    "*", "*?", "+", "+?", "?", "??", "{", "{", "{",    "*", "*?", "+", "+?", "?", "??", "{", "{", "{",
158    "*", "*?", "+", "+?", "?", "??", "{", "{",    "*", "*?", "+", "+?", "?", "??", "{", "{",
159    "class", "Ref",    "class", "Ref", "Recurse",
160    "Alt", "Ket", "KetRmax", "KetRmin", "Assert", "Assert not",    "Alt", "Ket", "KetRmax", "KetRmin", "Assert", "Assert not",
161    "AssertB", "AssertB not", "Reverse", "Once", "Cond", "Cref",    "AssertB", "AssertB not", "Reverse", "Once", "Cond", "Cref",
162    "Brazero", "Braminzero", "Bra"    "Brazero", "Braminzero", "Branumber", "Bra"
163  };  };
164    
165    
166  static void print_internals(pcre *re, FILE *outfile)  static void print_internals(pcre *re)
167  {  {
168  unsigned char *code = ((real_pcre *)re)->code;  unsigned char *code = ((real_pcre *)re)->code;
169    
# Line 63  for(;;) Line 178  for(;;)
178    
179    if (*code >= OP_BRA)    if (*code >= OP_BRA)
180      {      {
181      fprintf(outfile, "%3d Bra %d", (code[1] << 8) + code[2], *code - OP_BRA);      if (*code - OP_BRA > EXTRACT_BASIC_MAX)
182          fprintf(outfile, "%3d Bra extra", (code[1] << 8) + code[2]);
183        else
184          fprintf(outfile, "%3d Bra %d", (code[1] << 8) + code[2], *code - OP_BRA);
185      code += 2;      code += 2;
186      }      }
187    
# Line 79  for(;;) Line 197  for(;;)
197      code++;      code++;
198      break;      break;
199    
     case OP_COND:  
     fprintf(outfile, "%3d Cond", (code[1] << 8) + code[2]);  
     code += 2;  
     break;  
   
     case OP_CREF:  
     fprintf(outfile, " %.2d %s", code[1], OP_names[*code]);  
     code++;  
     break;  
   
200      case OP_CHARS:      case OP_CHARS:
201      charlength = *(++code);      charlength = *(++code);
202      fprintf(outfile, "%3d ", charlength);      fprintf(outfile, "%3d ", charlength);
# Line 106  for(;;) Line 214  for(;;)
214      case OP_ASSERTBACK:      case OP_ASSERTBACK:
215      case OP_ASSERTBACK_NOT:      case OP_ASSERTBACK_NOT:
216      case OP_ONCE:      case OP_ONCE:
217      fprintf(outfile, "%3d %s", (code[1] << 8) + code[2], OP_names[*code]);      case OP_COND:
218      code += 2;      case OP_BRANUMBER:
     break;  
   
219      case OP_REVERSE:      case OP_REVERSE:
220        case OP_CREF:
221      fprintf(outfile, "%3d %s", (code[1] << 8) + code[2], OP_names[*code]);      fprintf(outfile, "%3d %s", (code[1] << 8) + code[2], OP_names[*code]);
222      code += 2;      code += 2;
223      break;      break;
# Line 183  for(;;) Line 290  for(;;)
290      break;      break;
291    
292      case OP_REF:      case OP_REF:
293      fprintf(outfile, "    \\%d", *(++code));      fprintf(outfile, "    \\%d", (code[1] << 8) | code[2]);
294      code++;      code += 3;
295      goto CLASS_REF_REPEAT;      goto CLASS_REF_REPEAT;
296    
297      case OP_CLASS:      case OP_CLASS:
# Line 257  for(;;) Line 364  for(;;)
364    
365    
366    
367  /* Character string printing function. */  /* Character string printing function. A "normal" and a UTF-8 version. */
368    
369  static void pchars(unsigned char *p, int length)  static void pchars(unsigned char *p, int length, int utf8)
370  {  {
371  int c;  int c;
372  while (length-- > 0)  while (length-- > 0)
373      {
374      if (utf8)
375        {
376        int rc = utf82ord(p, &c);
377        if (rc > 0)
378          {
379          length -= rc - 1;
380          p += rc;
381          if (c < 256 && isprint(c)) fprintf(outfile, "%c", c);
382            else fprintf(outfile, "\\x{%02x}", c);
383          continue;
384          }
385        }
386    
387       /* Not UTF-8, or malformed UTF-8  */
388    
389    if (isprint(c = *(p++))) fprintf(outfile, "%c", c);    if (isprint(c = *(p++))) fprintf(outfile, "%c", c);
390      else fprintf(outfile, "\\x%02x", c);      else fprintf(outfile, "\\x%02x", c);
391      }
392  }  }
393    
394    
# Line 274  compiled re. */ Line 398  compiled re. */
398    
399  static void *new_malloc(size_t size)  static void *new_malloc(size_t size)
400  {  {
401  if (log_store) fprintf(outfile, "Store size request: %d\n", (int)size);  gotten_store = size;
402    if (log_store)
403      fprintf(outfile, "Memory allocation (code space): %d\n",
404        (int)((int)size - offsetof(real_pcre, code[0])));
405  return malloc(size);  return malloc(size);
406  }  }
407    
408    
409    
410    
411    /* Get one piece of information from the pcre_fullinfo() function */
412    
413    static void new_info(pcre *re, pcre_extra *study, int option, void *ptr)
414    {
415    int rc;
416    if ((rc = pcre_fullinfo(re, study, option, ptr)) < 0)
417      fprintf(outfile, "Error %d from pcre_fullinfo(%d)\n", rc, option);
418    }
419    
420    
421    
422    
423  /* Read lines from named file or stdin and write to named file or stdout; lines  /* Read lines from named file or stdin and write to named file or stdout; lines
424  consist of a regular expression, in delimiters and optionally followed by  consist of a regular expression, in delimiters and optionally followed by
425  options, followed by a set of test data, terminated by an empty line. */  options, followed by a set of test data, terminated by an empty line. */
# Line 292  int study_options = 0; Line 432  int study_options = 0;
432  int op = 1;  int op = 1;
433  int timeit = 0;  int timeit = 0;
434  int showinfo = 0;  int showinfo = 0;
435    int showstore = 0;
436    int size_offsets = 45;
437    int size_offsets_max;
438    int *offsets;
439    #if !defined NOPOSIX
440  int posix = 0;  int posix = 0;
441    #endif
442  int debug = 0;  int debug = 0;
443  int done = 0;  int done = 0;
444  unsigned char buffer[30000];  unsigned char buffer[30000];
# Line 306  outfile = stdout; Line 452  outfile = stdout;
452    
453  while (argc > 1 && argv[op][0] == '-')  while (argc > 1 && argv[op][0] == '-')
454    {    {
455    if (strcmp(argv[op], "-s") == 0) log_store = 1;    char *endptr;
456    
457      if (strcmp(argv[op], "-s") == 0 || strcmp(argv[op], "-m") == 0)
458        showstore = 1;
459    else if (strcmp(argv[op], "-t") == 0) timeit = 1;    else if (strcmp(argv[op], "-t") == 0) timeit = 1;
460    else if (strcmp(argv[op], "-i") == 0) showinfo = 1;    else if (strcmp(argv[op], "-i") == 0) showinfo = 1;
461    else if (strcmp(argv[op], "-d") == 0) showinfo = debug = 1;    else if (strcmp(argv[op], "-d") == 0) showinfo = debug = 1;
462      else if (strcmp(argv[op], "-o") == 0 && argc > 2 &&
463          ((size_offsets = strtoul(argv[op+1], &endptr, 10)), *endptr == 0))
464        {
465        op++;
466        argc--;
467        }
468    #if !defined NOPOSIX
469    else if (strcmp(argv[op], "-p") == 0) posix = 1;    else if (strcmp(argv[op], "-p") == 0) posix = 1;
470    #endif
471    else    else
472      {      {
473      printf("*** Unknown option %s\n", argv[op]);      printf("** Unknown or malformed option %s\n", argv[op]);
474      printf("Usage: pcretest [-d] [-i] [-p] [-s] [-t] [<input> [<output>]]\n");      printf("Usage:   pcretest [-d] [-i] [-o <n>] [-p] [-s] [-t] [<input> [<output>]]\n");
475      printf("  -d   debug: show compiled code; implies -i\n"      printf("  -d     debug: show compiled code; implies -i\n"
476             "  -i   show information about compiled pattern\n"             "  -i     show information about compiled pattern\n"
477             "  -p   use POSIX interface\n"             "  -o <n> set size of offsets vector to <n>\n");
478             "  -s   output store information\n"  #if !defined NOPOSIX
479             "  -t   time compilation and execution\n");      printf("  -p     use POSIX interface\n");
480    #endif
481        printf("  -s     output store information\n"
482               "  -t     time compilation and execution\n");
483      return 1;      return 1;
484      }      }
485    op++;    op++;
486    argc--;    argc--;
487    }    }
488    
489    /* Get the store for the offsets vector, and remember what it was */
490    
491    size_offsets_max = size_offsets;
492    offsets = malloc(size_offsets_max * sizeof(int));
493    if (offsets == NULL)
494      {
495      printf("** Failed to get %d bytes of memory for offsets vector\n",
496        size_offsets_max * sizeof(int));
497      return 1;
498      }
499    
500  /* Sort out the input and output files */  /* Sort out the input and output files */
501    
502  if (argc > 1)  if (argc > 1)
# Line 362  while (!done) Line 533  while (!done)
533    {    {
534    pcre *re = NULL;    pcre *re = NULL;
535    pcre_extra *extra = NULL;    pcre_extra *extra = NULL;
536    
537    #if !defined NOPOSIX  /* There are still compilers that require no indent */
538    regex_t preg;    regex_t preg;
539      int do_posix = 0;
540    #endif
541    
542    const char *error;    const char *error;
543    unsigned char *p, *pp, *ppp;    unsigned char *p, *pp, *ppp;
544    unsigned const char *tables = NULL;    const unsigned char *tables = NULL;
545    int do_study = 0;    int do_study = 0;
546    int do_debug = debug;    int do_debug = debug;
547      int do_G = 0;
548      int do_g = 0;
549    int do_showinfo = showinfo;    int do_showinfo = showinfo;
550    int do_posix = 0;    int do_showrest = 0;
551      int utf8 = 0;
552    int erroroffset, len, delimiter;    int erroroffset, len, delimiter;
553    
554    if (infile == stdin) printf("  re> ");    if (infile == stdin) printf("  re> ");
# Line 434  while (!done) Line 613  while (!done)
613    
614    options = 0;    options = 0;
615    study_options = 0;    study_options = 0;
616      log_store = showstore;  /* default from command line */
617    
618    while (*pp != 0)    while (*pp != 0)
619      {      {
620      switch (*pp++)      switch (*pp++)
621        {        {
622          case 'g': do_g = 1; break;
623        case 'i': options |= PCRE_CASELESS; break;        case 'i': options |= PCRE_CASELESS; break;
624        case 'm': options |= PCRE_MULTILINE; break;        case 'm': options |= PCRE_MULTILINE; break;
625        case 's': options |= PCRE_DOTALL; break;        case 's': options |= PCRE_DOTALL; break;
626        case 'x': options |= PCRE_EXTENDED; break;        case 'x': options |= PCRE_EXTENDED; break;
627    
628          case '+': do_showrest = 1; break;
629        case 'A': options |= PCRE_ANCHORED; break;        case 'A': options |= PCRE_ANCHORED; break;
630        case 'D': do_debug = do_showinfo = 1; break;        case 'D': do_debug = do_showinfo = 1; break;
631        case 'E': options |= PCRE_DOLLAR_ENDONLY; break;        case 'E': options |= PCRE_DOLLAR_ENDONLY; break;
632          case 'G': do_G = 1; break;
633        case 'I': do_showinfo = 1; break;        case 'I': do_showinfo = 1; break;
634          case 'M': log_store = 1; break;
635    
636    #if !defined NOPOSIX
637        case 'P': do_posix = 1; break;        case 'P': do_posix = 1; break;
638    #endif
639    
640        case 'S': do_study = 1; break;        case 'S': do_study = 1; break;
641        case 'U': options |= PCRE_UNGREEDY; break;        case 'U': options |= PCRE_UNGREEDY; break;
642        case 'X': options |= PCRE_EXTRA; break;        case 'X': options |= PCRE_EXTRA; break;
643          case '8': options |= PCRE_UTF8; utf8 = 1; break;
644    
645        case 'L':        case 'L':
646        ppp = pp;        ppp = pp;
# Line 476  while (!done) Line 666  while (!done)
666    timing, showing, or debugging options, nor the ability to pass over    timing, showing, or debugging options, nor the ability to pass over
667    local character tables. */    local character tables. */
668    
669    #if !defined NOPOSIX
670    if (posix || do_posix)    if (posix || do_posix)
671      {      {
672      int rc;      int rc;
# Line 498  while (!done) Line 689  while (!done)
689    /* Handle compiling via the native interface */    /* Handle compiling via the native interface */
690    
691    else    else
692    #endif  /* !defined NOPOSIX */
693    
694      {      {
695      if (timeit)      if (timeit)
696        {        {
# Line 542  while (!done) Line 735  while (!done)
735        goto CONTINUE;        goto CONTINUE;
736        }        }
737    
738      /* Compilation succeeded; print data if required */      /* Compilation succeeded; print data if required. There are now two
739        info-returning functions. The old one has a limited interface and
740        returns only limited data. Check that it agrees with the newer one. */
741    
742      if (do_showinfo)      if (do_showinfo)
743        {        {
744        int first_char, count;        unsigned long int get_options;
745          int old_first_char, old_options, old_count;
746          int count, backrefmax, first_char, need_char;
747          size_t size;
748    
749          if (do_debug) print_internals(re);
750    
751          new_info(re, NULL, PCRE_INFO_OPTIONS, &get_options);
752          new_info(re, NULL, PCRE_INFO_SIZE, &size);
753          new_info(re, NULL, PCRE_INFO_CAPTURECOUNT, &count);
754          new_info(re, NULL, PCRE_INFO_BACKREFMAX, &backrefmax);
755          new_info(re, NULL, PCRE_INFO_FIRSTCHAR, &first_char);
756          new_info(re, NULL, PCRE_INFO_LASTLITERAL, &need_char);
757    
758        if (do_debug) print_internals(re, outfile);        old_count = pcre_info(re, &old_options, &old_first_char);
   
       count = pcre_info(re, &options, &first_char);  
759        if (count < 0) fprintf(outfile,        if (count < 0) fprintf(outfile,
760          "Error %d while reading info\n", count);          "Error %d from pcre_info()\n", count);
761        else        else
762          {          {
763          fprintf(outfile, "Identifying subpattern count = %d\n", count);          if (old_count != count) fprintf(outfile,
764          if (options == 0) fprintf(outfile, "No options\n");            "Count disagreement: pcre_fullinfo=%d pcre_info=%d\n", count,
765            else fprintf(outfile, "Options:%s%s%s%s%s%s%s%s\n",              old_count);
766              ((options & PCRE_ANCHORED) != 0)? " anchored" : "",  
767              ((options & PCRE_CASELESS) != 0)? " caseless" : "",          if (old_first_char != first_char) fprintf(outfile,
768              ((options & PCRE_EXTENDED) != 0)? " extended" : "",            "First char disagreement: pcre_fullinfo=%d pcre_info=%d\n",
769              ((options & PCRE_MULTILINE) != 0)? " multiline" : "",              first_char, old_first_char);
770              ((options & PCRE_DOTALL) != 0)? " dotall" : "",  
771              ((options & PCRE_DOLLAR_ENDONLY) != 0)? " dollar_endonly" : "",          if (old_options != (int)get_options) fprintf(outfile,
772              ((options & PCRE_EXTRA) != 0)? " extra" : "",            "Options disagreement: pcre_fullinfo=%ld pcre_info=%d\n",
773              ((options & PCRE_UNGREEDY) != 0)? " ungreedy" : "");              get_options, old_options);
774          if (first_char == -1)          }
775            {  
776            fprintf(outfile, "First char at start or follows \\n\n");        if (size != gotten_store) fprintf(outfile,
777            }          "Size disagreement: pcre_fullinfo=%d call to malloc for %d\n",
778          else if (first_char < 0)          size, gotten_store);
779            {  
780            fprintf(outfile, "No first char\n");        fprintf(outfile, "Capturing subpattern count = %d\n", count);
781            }        if (backrefmax > 0)
782            fprintf(outfile, "Max back reference = %d\n", backrefmax);
783          if (get_options == 0) fprintf(outfile, "No options\n");
784            else fprintf(outfile, "Options:%s%s%s%s%s%s%s%s%s\n",
785              ((get_options & PCRE_ANCHORED) != 0)? " anchored" : "",
786              ((get_options & PCRE_CASELESS) != 0)? " caseless" : "",
787              ((get_options & PCRE_EXTENDED) != 0)? " extended" : "",
788              ((get_options & PCRE_MULTILINE) != 0)? " multiline" : "",
789              ((get_options & PCRE_DOTALL) != 0)? " dotall" : "",
790              ((get_options & PCRE_DOLLAR_ENDONLY) != 0)? " dollar_endonly" : "",
791              ((get_options & PCRE_EXTRA) != 0)? " extra" : "",
792              ((get_options & PCRE_UNGREEDY) != 0)? " ungreedy" : "",
793              ((get_options & PCRE_UTF8) != 0)? " utf8" : "");
794    
795          if (((((real_pcre *)re)->options) & PCRE_ICHANGED) != 0)
796            fprintf(outfile, "Case state changes\n");
797    
798          if (first_char == -1)
799            {
800            fprintf(outfile, "First char at start or follows \\n\n");
801            }
802          else if (first_char < 0)
803            {
804            fprintf(outfile, "No first char\n");
805            }
806          else
807            {
808            if (isprint(first_char))
809              fprintf(outfile, "First char = \'%c\'\n", first_char);
810          else          else
811            {            fprintf(outfile, "First char = %d\n", first_char);
812            if (isprint(first_char))          }
813              fprintf(outfile, "First char = \'%c\'\n", first_char);  
814            else        if (need_char < 0)
815              fprintf(outfile, "First char = %d\n", first_char);          {
816            }          fprintf(outfile, "No need char\n");
817            }
818          else
819            {
820            if (isprint(need_char))
821              fprintf(outfile, "Need char = \'%c\'\n", need_char);
822            else
823              fprintf(outfile, "Need char = %d\n", need_char);
824          }          }
825        }        }
826    
# Line 609  while (!done) Line 849  while (!done)
849        else if (extra == NULL)        else if (extra == NULL)
850          fprintf(outfile, "Study returned NULL\n");          fprintf(outfile, "Study returned NULL\n");
851    
       /* This looks at internal information. A bit kludgy to do it this  
       way, but it is useful for testing. */  
   
852        else if (do_showinfo)        else if (do_showinfo)
853          {          {
854          real_pcre_extra *xx = (real_pcre_extra *)extra;          uschar *start_bits = NULL;
855          if ((xx->options & PCRE_STUDY_MAPPED) == 0)          new_info(re, extra, PCRE_INFO_FIRSTTABLE, &start_bits);
856            if (start_bits == NULL)
857            fprintf(outfile, "No starting character set\n");            fprintf(outfile, "No starting character set\n");
858          else          else
859            {            {
# Line 624  while (!done) Line 862  while (!done)
862            fprintf(outfile, "Starting character set: ");            fprintf(outfile, "Starting character set: ");
863            for (i = 0; i < 256; i++)            for (i = 0; i < 256; i++)
864              {              {
865              if ((xx->start_bits[i/8] & (1<<(i%8))) != 0)              if ((start_bits[i/8] & (1<<(i%8))) != 0)
866                {                {
867                if (c > 75)                if (c > 75)
868                  {                  {
# Line 654  while (!done) Line 892  while (!done)
892    for (;;)    for (;;)
893      {      {
894      unsigned char *q;      unsigned char *q;
895        unsigned char *bptr = dbuffer;
896        int use_size_offsets = size_offsets;
897      int count, c;      int count, c;
898      int copystrings = 0;      int copystrings = 0;
899      int getstrings = 0;      int getstrings = 0;
900      int getlist = 0;      int getlist = 0;
901      int offsets[45];      int gmatched = 0;
902      int size_offsets = sizeof(offsets)/sizeof(int);      int start_offset = 0;
903        int g_notempty = 0;
904    
905      options = 0;      options = 0;
906    
907      if (infile == stdin) printf("  data> ");      if (infile == stdin) printf("data> ");
908      if (fgets((char *)buffer, sizeof(buffer), infile) == NULL)      if (fgets((char *)buffer, sizeof(buffer), infile) == NULL)
909        {        {
910        done = 1;        done = 1;
# Line 703  while (!done) Line 944  while (!done)
944          break;          break;
945    
946          case 'x':          case 'x':
947    
948            /* Handle \x{..} specially - new Perl thing for utf8 */
949    
950            if (*p == '{')
951              {
952              unsigned char *pt = p;
953              c = 0;
954              while (isxdigit(*(++pt)))
955                c = c * 16 + tolower(*pt) - ((isdigit(*pt))? '0' : 'W');
956              if (*pt == '}')
957                {
958                unsigned char buffer[8];
959                int ii, utn;
960                utn = ord2utf8(c, buffer);
961                for (ii = 0; ii < utn - 1; ii++) *q++ = buffer[ii];
962                c = buffer[ii];   /* Last byte */
963                p = pt + 1;
964                break;
965                }
966              /* Not correct form; fall through */
967              }
968    
969            /* Ordinary \x */
970    
971          c = 0;          c = 0;
972          while (i++ < 2 && isxdigit(*p))          while (i++ < 2 && isxdigit(*p))
973            {            {
# Line 737  while (!done) Line 1002  while (!done)
1002          getlist = 1;          getlist = 1;
1003          continue;          continue;
1004    
1005            case 'N':
1006            options |= PCRE_NOTEMPTY;
1007            continue;
1008    
1009          case 'O':          case 'O':
1010          while(isdigit(*p)) n = n * 10 + *p++ - '0';          while(isdigit(*p)) n = n * 10 + *p++ - '0';
1011          if (n <= (int)(sizeof(offsets)/sizeof(int))) size_offsets = n;          if (n > size_offsets_max)
1012              {
1013    
1014    if (offsets != NULL)
1015    
1016              free(offsets);
1017              size_offsets_max = n;
1018              offsets = malloc(size_offsets_max * sizeof(int));
1019              if (offsets == NULL)
1020                {
1021                printf("** Failed to get %d bytes of memory for offsets vector\n",
1022                  size_offsets_max * sizeof(int));
1023                return 1;
1024                }
1025              }
1026            use_size_offsets = n;
1027    
1028    if (n == 0)
1029      {
1030      free(offsets);
1031      offsets = NULL;
1032      size_offsets_max = 0;
1033      }
1034    
1035          continue;          continue;
1036    
1037          case 'Z':          case 'Z':
# Line 754  while (!done) Line 1046  while (!done)
1046      /* Handle matching via the POSIX interface, which does not      /* Handle matching via the POSIX interface, which does not
1047      support timing. */      support timing. */
1048    
1049    #if !defined NOPOSIX
1050      if (posix || do_posix)      if (posix || do_posix)
1051        {        {
1052        int rc;        int rc;
1053        int eflags = 0;        int eflags = 0;
1054        regmatch_t pmatch[30];        regmatch_t *pmatch = malloc(sizeof(regmatch_t) * use_size_offsets);
1055        if ((options & PCRE_NOTBOL) != 0) eflags |= REG_NOTBOL;        if ((options & PCRE_NOTBOL) != 0) eflags |= REG_NOTBOL;
1056        if ((options & PCRE_NOTEOL) != 0) eflags |= REG_NOTEOL;        if ((options & PCRE_NOTEOL) != 0) eflags |= REG_NOTEOL;
1057    
1058        rc = regexec(&preg, (char *)dbuffer, sizeof(pmatch)/sizeof(regmatch_t),        rc = regexec(&preg, (const char *)bptr, use_size_offsets, pmatch, eflags);
         pmatch, eflags);  
1059    
1060        if (rc != 0)        if (rc != 0)
1061          {          {
# Line 773  while (!done) Line 1065  while (!done)
1065        else        else
1066          {          {
1067          size_t i;          size_t i;
1068          for (i = 0; i < sizeof(pmatch)/sizeof(regmatch_t); i++)          for (i = 0; i < use_size_offsets; i++)
1069            {            {
1070            if (pmatch[i].rm_so >= 0)            if (pmatch[i].rm_so >= 0)
1071              {              {
1072              fprintf(outfile, "%2d: ", (int)i);              fprintf(outfile, "%2d: ", (int)i);
1073              pchars(dbuffer + pmatch[i].rm_so,              pchars(dbuffer + pmatch[i].rm_so,
1074                pmatch[i].rm_eo - pmatch[i].rm_so);                pmatch[i].rm_eo - pmatch[i].rm_so, utf8);
1075              fprintf(outfile, "\n");              fprintf(outfile, "\n");
1076                if (i == 0 && do_showrest)
1077                  {
1078                  fprintf(outfile, " 0+ ");
1079                  pchars(dbuffer + pmatch[i].rm_eo, len - pmatch[i].rm_eo, utf8);
1080                  fprintf(outfile, "\n");
1081                  }
1082              }              }
1083            }            }
1084          }          }
1085          free(pmatch);
1086        }        }
1087    
1088      /* Handle matching via the native interface */      /* Handle matching via the native interface - repeats for /g and /G */
1089    
1090      else      else
1091    #endif  /* !defined NOPOSIX */
1092    
1093        for (;; gmatched++)    /* Loop for /g or /G */
1094        {        {
1095        if (timeit)        if (timeit)
1096          {          {
# Line 796  while (!done) Line 1098  while (!done)
1098          clock_t time_taken;          clock_t time_taken;
1099          clock_t start_time = clock();          clock_t start_time = clock();
1100          for (i = 0; i < LOOPREPEAT; i++)          for (i = 0; i < LOOPREPEAT; i++)
1101            count = pcre_exec(re, extra, (char *)dbuffer, len, options, offsets,            count = pcre_exec(re, extra, (char *)bptr, len,
1102              size_offsets);              start_offset, options | g_notempty, offsets, use_size_offsets);
1103          time_taken = clock() - start_time;          time_taken = clock() - start_time;
1104          fprintf(outfile, "Execute time %.3f milliseconds\n",          fprintf(outfile, "Execute time %.3f milliseconds\n",
1105            ((double)time_taken * 1000.0)/            ((double)time_taken * 1000.0)/
1106            ((double)LOOPREPEAT * (double)CLOCKS_PER_SEC));            ((double)LOOPREPEAT * (double)CLOCKS_PER_SEC));
1107          }          }
1108    
1109        count = pcre_exec(re, extra, (char *)dbuffer, len, options, offsets,        count = pcre_exec(re, extra, (char *)bptr, len,
1110          size_offsets);          start_offset, options | g_notempty, offsets, use_size_offsets);
1111    
1112        if (count == 0)        if (count == 0)
1113          {          {
1114          fprintf(outfile, "Matched, but too many substrings\n");          fprintf(outfile, "Matched, but too many substrings\n");
1115          count = size_offsets/3;          count = use_size_offsets/3;
1116          }          }
1117    
1118          /* Matched */
1119    
1120        if (count >= 0)        if (count >= 0)
1121          {          {
1122          int i;          int i;
# Line 823  while (!done) Line 1127  while (!done)
1127            else            else
1128              {              {
1129              fprintf(outfile, "%2d: ", i/2);              fprintf(outfile, "%2d: ", i/2);
1130              pchars(dbuffer + offsets[i], offsets[i+1] - offsets[i]);              pchars(bptr + offsets[i], offsets[i+1] - offsets[i], utf8);
1131              fprintf(outfile, "\n");              fprintf(outfile, "\n");
1132                if (i == 0)
1133                  {
1134                  if (do_showrest)
1135                    {
1136                    fprintf(outfile, " 0+ ");
1137                    pchars(bptr + offsets[i+1], len - offsets[i+1], utf8);
1138                    fprintf(outfile, "\n");
1139                    }
1140                  }
1141              }              }
1142            }            }
1143    
# Line 832  while (!done) Line 1145  while (!done)
1145            {            {
1146            if ((copystrings & (1 << i)) != 0)            if ((copystrings & (1 << i)) != 0)
1147              {              {
1148              char buffer[16];              char copybuffer[16];
1149              int rc = pcre_copy_substring((char *)dbuffer, offsets, count,              int rc = pcre_copy_substring((char *)bptr, offsets, count,
1150                i, buffer, sizeof(buffer));                i, copybuffer, sizeof(copybuffer));
1151              if (rc < 0)              if (rc < 0)
1152                fprintf(outfile, "copy substring %d failed %d\n", i, rc);                fprintf(outfile, "copy substring %d failed %d\n", i, rc);
1153              else              else
1154                fprintf(outfile, "%2dC %s (%d)\n", i, buffer, rc);                fprintf(outfile, "%2dC %s (%d)\n", i, copybuffer, rc);
1155              }              }
1156            }            }
1157    
# Line 847  while (!done) Line 1160  while (!done)
1160            if ((getstrings & (1 << i)) != 0)            if ((getstrings & (1 << i)) != 0)
1161              {              {
1162              const char *substring;              const char *substring;
1163              int rc = pcre_get_substring((char *)dbuffer, offsets, count,              int rc = pcre_get_substring((char *)bptr, offsets, count,
1164                i, &substring);                i, &substring);
1165              if (rc < 0)              if (rc < 0)
1166                fprintf(outfile, "get substring %d failed %d\n", i, rc);                fprintf(outfile, "get substring %d failed %d\n", i, rc);
1167              else              else
1168                {                {
1169                fprintf(outfile, "%2dG %s (%d)\n", i, substring, rc);                fprintf(outfile, "%2dG %s (%d)\n", i, substring, rc);
1170                free((void *)substring);                /* free((void *)substring); */
1171                  pcre_free_substring(substring);
1172                }                }
1173              }              }
1174            }            }
# Line 862  while (!done) Line 1176  while (!done)
1176          if (getlist)          if (getlist)
1177            {            {
1178            const char **stringlist;            const char **stringlist;
1179            int rc = pcre_get_substring_list((char *)dbuffer, offsets, count,            int rc = pcre_get_substring_list((char *)bptr, offsets, count,
1180              &stringlist);              &stringlist);
1181            if (rc < 0)            if (rc < 0)
1182              fprintf(outfile, "get substring list failed %d\n", rc);              fprintf(outfile, "get substring list failed %d\n", rc);
# Line 872  while (!done) Line 1186  while (!done)
1186                fprintf(outfile, "%2dL %s\n", i, stringlist[i]);                fprintf(outfile, "%2dL %s\n", i, stringlist[i]);
1187              if (stringlist[i] != NULL)              if (stringlist[i] != NULL)
1188                fprintf(outfile, "string list not terminated by NULL\n");                fprintf(outfile, "string list not terminated by NULL\n");
1189              free((void *)stringlist);              /* free((void *)stringlist); */
1190                pcre_free_substring_list(stringlist);
1191              }              }
1192            }            }
1193            }
1194    
1195          /* Failed to match. If this is a /g or /G loop and we previously set
1196          g_notempty after a null match, this is not necessarily the end.
1197          We want to advance the start offset, and continue. Fudge the offset
1198          values to achieve this. We won't be at the end of the string - that
1199          was checked before setting g_notempty. */
1200    
1201          else
1202            {
1203            if (g_notempty != 0)
1204              {
1205              offsets[0] = start_offset;
1206              offsets[1] = start_offset + 1;
1207              }
1208            else
1209              {
1210              if (gmatched == 0)   /* Error if no previous matches */
1211                {
1212                if (count == -1) fprintf(outfile, "No match\n");
1213                  else fprintf(outfile, "Error %d\n", count);
1214                }
1215              break;  /* Out of the /g loop */
1216              }
1217          }          }
1218    
1219          /* If not /g or /G we are done */
1220    
1221          if (!do_g && !do_G) break;
1222    
1223          /* If we have matched an empty string, first check to see if we are at
1224          the end of the subject. If so, the /g loop is over. Otherwise, mimic
1225          what Perl's /g options does. This turns out to be rather cunning. First
1226          we set PCRE_NOTEMPTY and PCRE_ANCHORED and try the match again at the
1227          same point. If this fails (picked up above) we advance to the next
1228          character. */
1229    
1230          g_notempty = 0;
1231          if (offsets[0] == offsets[1])
1232            {
1233            if (offsets[0] == len) break;
1234            g_notempty = PCRE_NOTEMPTY | PCRE_ANCHORED;
1235            }
1236    
1237          /* For /g, update the start offset, leaving the rest alone */
1238    
1239          if (do_g) start_offset = offsets[1];
1240    
1241          /* For /G, update the pointer and length */
1242    
1243        else        else
1244          {          {
1245          if (count == -1) fprintf(outfile, "No match\n");          bptr += offsets[1];
1246            else fprintf(outfile, "Error %d\n", count);          len -= offsets[1];
1247          }          }
1248        }        }  /* End of loop for /g and /G */
1249      }      }    /* End of loop for data lines */
1250    
1251    CONTINUE:    CONTINUE:
1252    
1253    #if !defined NOPOSIX
1254    if (posix || do_posix) regfree(&preg);    if (posix || do_posix) regfree(&preg);
1255    #endif
1256    
1257    if (re != NULL) free(re);    if (re != NULL) free(re);
1258    if (extra != NULL) free(extra);    if (extra != NULL) free(extra);
1259    if (tables != NULL)    if (tables != NULL)

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