/[pcre]/code/trunk/pcregrep.c
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revision 77 by nigel, Sat Feb 24 21:40:45 2007 UTC revision 199 by ph10, Tue Jul 31 14:39:09 2007 UTC
# Line 6  Line 6 
6  its pattern matching. On a Unix or Win32 system it can recurse into  its pattern matching. On a Unix or Win32 system it can recurse into
7  directories.  directories.
8    
9             Copyright (c) 1997-2005 University of Cambridge             Copyright (c) 1997-2007 University of Cambridge
10    
11  -----------------------------------------------------------------------------  -----------------------------------------------------------------------------
12  Redistribution and use in source and binary forms, with or without  Redistribution and use in source and binary forms, with or without
# Line 37  POSSIBILITY OF SUCH DAMAGE. Line 37  POSSIBILITY OF SUCH DAMAGE.
37  -----------------------------------------------------------------------------  -----------------------------------------------------------------------------
38  */  */
39    
40    #ifdef HAVE_CONFIG_H
41    #include <config.h>
42    #endif
43    
44  #include <ctype.h>  #include <ctype.h>
45    #include <locale.h>
46  #include <stdio.h>  #include <stdio.h>
47  #include <string.h>  #include <string.h>
48  #include <stdlib.h>  #include <stdlib.h>
# Line 45  POSSIBILITY OF SUCH DAMAGE. Line 50  POSSIBILITY OF SUCH DAMAGE.
50    
51  #include <sys/types.h>  #include <sys/types.h>
52  #include <sys/stat.h>  #include <sys/stat.h>
53    
54    #ifdef HAVE_UNISTD_H
55  #include <unistd.h>  #include <unistd.h>
56    #endif
57    
58  #include "config.h"  #include <pcre.h>
 #include "pcre.h"  
59    
60  #define FALSE 0  #define FALSE 0
61  #define TRUE 1  #define TRUE 1
62    
63  typedef int BOOL;  typedef int BOOL;
64    
 #define VERSION "4.0 07-Jun-2005"  
65  #define MAX_PATTERN_COUNT 100  #define MAX_PATTERN_COUNT 100
66    
67  #if BUFSIZ > 8192  #if BUFSIZ > 8192
# Line 64  typedef int BOOL; Line 70  typedef int BOOL;
70  #define MBUFTHIRD 8192  #define MBUFTHIRD 8192
71  #endif  #endif
72    
73    /* Values for the "filenames" variable, which specifies options for file name
74    output. The order is important; it is assumed that a file name is wanted for
75    all values greater than FN_DEFAULT. */
76    
77    enum { FN_NONE, FN_DEFAULT, FN_ONLY, FN_NOMATCH_ONLY, FN_FORCE };
78    
79    /* Actions for the -d and -D options */
80    
81    enum { dee_READ, dee_SKIP, dee_RECURSE };
82    enum { DEE_READ, DEE_SKIP };
83    
84    /* Actions for special processing options (flag bits) */
85    
86    #define PO_WORD_MATCH     0x0001
87    #define PO_LINE_MATCH     0x0002
88    #define PO_FIXED_STRINGS  0x0004
89    
90    /* Line ending types */
91    
92    enum { EL_LF, EL_CR, EL_CRLF, EL_ANY, EL_ANYCRLF };
93    
94    
95    
96  /*************************************************  /*************************************************
97  *               Global variables                 *  *               Global variables                 *
98  *************************************************/  *************************************************/
99    
100    /* Jeffrey Friedl has some debugging requirements that are not part of the
101    regular code. */
102    
103    #ifdef JFRIEDL_DEBUG
104    static int S_arg = -1;
105    static unsigned int jfriedl_XR = 0; /* repeat regex attempt this many times */
106    static unsigned int jfriedl_XT = 0; /* replicate text this many times */
107    static const char *jfriedl_prefix = "";
108    static const char *jfriedl_postfix = "";
109    #endif
110    
111    static int  endlinetype;
112    
113    static char *colour_string = (char *)"1;31";
114    static char *colour_option = NULL;
115    static char *dee_option = NULL;
116    static char *DEE_option = NULL;
117    static char *newline = NULL;
118  static char *pattern_filename = NULL;  static char *pattern_filename = NULL;
119  static char *stdin_name = (char *)"(standard input)";  static char *stdin_name = (char *)"(standard input)";
120    static char *locale = NULL;
121    
122    static const unsigned char *pcretables = NULL;
123    
124  static int  pattern_count = 0;  static int  pattern_count = 0;
125  static pcre **pattern_list;  static pcre **pattern_list = NULL;
126  static pcre_extra **hints_list;  static pcre_extra **hints_list = NULL;
127    
128  static char *include_pattern = NULL;  static char *include_pattern = NULL;
129  static char *exclude_pattern = NULL;  static char *exclude_pattern = NULL;
# Line 85  static pcre *exclude_compiled = NULL; Line 134  static pcre *exclude_compiled = NULL;
134  static int after_context = 0;  static int after_context = 0;
135  static int before_context = 0;  static int before_context = 0;
136  static int both_context = 0;  static int both_context = 0;
137    static int dee_action = dee_READ;
138    static int DEE_action = DEE_READ;
139    static int error_count = 0;
140    static int filenames = FN_DEFAULT;
141    static int process_options = 0;
142    
143  static BOOL count_only = FALSE;  static BOOL count_only = FALSE;
144  static BOOL filenames = TRUE;  static BOOL do_colour = FALSE;
 static BOOL filenames_only = FALSE;  
 static BOOL filenames_nomatch_only = FALSE;  
145  static BOOL hyphenpending = FALSE;  static BOOL hyphenpending = FALSE;
146  static BOOL invert = FALSE;  static BOOL invert = FALSE;
147  static BOOL multiline = FALSE;  static BOOL multiline = FALSE;
148  static BOOL number = FALSE;  static BOOL number = FALSE;
149    static BOOL only_matching = FALSE;
150  static BOOL quiet = FALSE;  static BOOL quiet = FALSE;
 static BOOL recurse = FALSE;  
151  static BOOL silent = FALSE;  static BOOL silent = FALSE;
152  static BOOL whole_lines = FALSE;  static BOOL utf8 = FALSE;
 static BOOL word_match = FALSE;  
153    
154  /* Structure for options and list of them */  /* Structure for options and list of them */
155    
156  enum { OP_NODATA, OP_STRING, OP_NUMBER };  enum { OP_NODATA, OP_STRING, OP_OP_STRING, OP_NUMBER, OP_OP_NUMBER,
157           OP_PATLIST };
158    
159  typedef struct option_item {  typedef struct option_item {
160    int type;    int type;
# Line 112  typedef struct option_item { Line 164  typedef struct option_item {
164    const char *help_text;    const char *help_text;
165  } option_item;  } option_item;
166    
167    /* Options without a single-letter equivalent get a negative value. This can be
168    used to identify them. */
169    
170    #define N_COLOUR    (-1)
171    #define N_EXCLUDE   (-2)
172    #define N_HELP      (-3)
173    #define N_INCLUDE   (-4)
174    #define N_LABEL     (-5)
175    #define N_LOCALE    (-6)
176    #define N_NULL      (-7)
177    
178  static option_item optionlist[] = {  static option_item optionlist[] = {
179    { OP_NODATA, -1,  NULL,              "",              "  terminate options" },    { OP_NODATA,    N_NULL,   NULL,              "",              "  terminate options" },
180    { OP_NODATA, -1,  NULL,              "help",          "display this help and exit" },    { OP_NODATA,    N_HELP,   NULL,              "help",          "display this help and exit" },
181    { OP_NUMBER, 'A', &after_context,    "after-context=number", "set number of following context lines" },    { OP_NUMBER,    'A',      &after_context,    "after-context=number", "set number of following context lines" },
182    { OP_NUMBER, 'B', &before_context,   "before-context=number", "set number of prior context lines" },    { OP_NUMBER,    'B',      &before_context,   "before-context=number", "set number of prior context lines" },
183    { OP_NUMBER, 'C', &both_context,     "context=number", "set number of context lines, before & after" },    { OP_OP_STRING, N_COLOUR, &colour_option,    "color=option",  "matched text color option" },
184    { OP_NODATA, 'c', NULL,              "count",         "print only a count of matching lines per FILE" },    { OP_NUMBER,    'C',      &both_context,     "context=number", "set number of context lines, before & after" },
185    { OP_STRING, 'f', &pattern_filename, "file=path",     "read patterns from file" },    { OP_NODATA,    'c',      NULL,              "count",         "print only a count of matching lines per FILE" },
186    { OP_NODATA, 'h', NULL,              "no-filename",   "suppress the prefixing filename on output" },    { OP_OP_STRING, N_COLOUR, &colour_option,    "colour=option", "matched text colour option" },
187    { OP_NODATA, 'i', NULL,              "ignore-case",   "ignore case distinctions" },    { OP_STRING,    'D',      &DEE_option,       "devices=action","how to handle devices, FIFOs, and sockets" },
188    { OP_NODATA, 'l', NULL,              "files-with-matches", "print only FILE names containing matches" },    { OP_STRING,    'd',      &dee_option,       "directories=action", "how to handle directories" },
189    { OP_NODATA, 'L', NULL,              "files-without-match","print only FILE names not containing matches" },    { OP_PATLIST,   'e',      NULL,              "regex(p)",      "specify pattern (may be used more than once)" },
190    { OP_STRING, -1,  &stdin_name,       "label=name",    "set name for standard input" },    { OP_NODATA,    'F',      NULL,              "fixed_strings", "patterns are sets of newline-separated strings" },
191    { OP_NODATA, 'M', NULL,              "multiline",     "run in multiline mode" },    { OP_STRING,    'f',      &pattern_filename, "file=path",     "read patterns from file" },
192    { OP_NODATA, 'n', NULL,              "line-number",   "print line number with output lines" },    { OP_NODATA,    'H',      NULL,              "with-filename", "force the prefixing filename on output" },
193    { OP_NODATA, 'q', NULL,              "quiet",         "suppress output, just set return code" },    { OP_NODATA,    'h',      NULL,              "no-filename",   "suppress the prefixing filename on output" },
194    { OP_NODATA, 'r', NULL,              "recursive",     "recursively scan sub-directories" },    { OP_NODATA,    'i',      NULL,              "ignore-case",   "ignore case distinctions" },
195    { OP_STRING, -1,  &exclude_pattern,  "exclude=pattern","exclude matching files when recursing" },    { OP_NODATA,    'l',      NULL,              "files-with-matches", "print only FILE names containing matches" },
196    { OP_STRING, -1,  &include_pattern,  "include=pattern","include matching files when recursing" },    { OP_NODATA,    'L',      NULL,              "files-without-match","print only FILE names not containing matches" },
197    { OP_NODATA, 's', NULL,              "no-messages",   "suppress error messages" },    { OP_STRING,    N_LABEL,  &stdin_name,       "label=name",    "set name for standard input" },
198    { OP_NODATA, 'u', NULL,              "utf-8",         "use UTF-8 mode" },    { OP_STRING,    N_LOCALE, &locale,           "locale=locale", "use the named locale" },
199    { OP_NODATA, 'V', NULL,              "version",       "print version information and exit" },    { OP_NODATA,    'M',      NULL,              "multiline",     "run in multiline mode" },
200    { OP_NODATA, 'v', NULL,              "invert-match",  "select non-matching lines" },    { OP_STRING,    'N',      &newline,          "newline=type",  "specify newline type (CR, LF, CRLF, ANYCRLF or ANY)" },
201    { OP_NODATA, 'w', NULL,              "word-regex(p)", "force PATTERN to match only as a word"  },    { OP_NODATA,    'n',      NULL,              "line-number",   "print line number with output lines" },
202    { OP_NODATA, 'x', NULL,              "line-regex(p)", "force PATTERN to match only whole lines" },    { OP_NODATA,    'o',      NULL,              "only-matching", "show only the part of the line that matched" },
203    { OP_NODATA, 0,   NULL,               NULL,            NULL }    { OP_NODATA,    'q',      NULL,              "quiet",         "suppress output, just set return code" },
204      { OP_NODATA,    'r',      NULL,              "recursive",     "recursively scan sub-directories" },
205      { OP_STRING,    N_EXCLUDE,&exclude_pattern,  "exclude=pattern","exclude matching files when recursing" },
206      { OP_STRING,    N_INCLUDE,&include_pattern,  "include=pattern","include matching files when recursing" },
207    #ifdef JFRIEDL_DEBUG
208      { OP_OP_NUMBER, 'S',      &S_arg,            "jeffS",         "replace matched (sub)string with X" },
209    #endif
210      { OP_NODATA,    's',      NULL,              "no-messages",   "suppress error messages" },
211      { OP_NODATA,    'u',      NULL,              "utf-8",         "use UTF-8 mode" },
212      { OP_NODATA,    'V',      NULL,              "version",       "print version information and exit" },
213      { OP_NODATA,    'v',      NULL,              "invert-match",  "select non-matching lines" },
214      { OP_NODATA,    'w',      NULL,              "word-regex(p)", "force patterns to match only as words"  },
215      { OP_NODATA,    'x',      NULL,              "line-regex(p)", "force patterns to match only whole lines" },
216      { OP_NODATA,    0,        NULL,               NULL,            NULL }
217  };  };
218    
219    /* Tables for prefixing and suffixing patterns, according to the -w, -x, and -F
220    options. These set the 1, 2, and 4 bits in process_options, respectively. Note
221    that the combination of -w and -x has the same effect as -x on its own, so we
222    can treat them as the same. */
223    
224    static const char *prefix[] = {
225      "", "\\b", "^(?:", "^(?:", "\\Q", "\\b\\Q", "^(?:\\Q", "^(?:\\Q" };
226    
227    static const char *suffix[] = {
228      "", "\\b", ")$",   ")$",   "\\E", "\\E\\b", "\\E)$",   "\\E)$" };
229    
230    /* UTF-8 tables - used only when the newline setting is "any". */
231    
232    const int utf8_table3[] = { 0xff, 0x1f, 0x0f, 0x07, 0x03, 0x01};
233    
234    const char utf8_table4[] = {
235      1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
236      1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
237      2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,
238      3,3,3,3,3,3,3,3,4,4,4,4,5,5,5,5 };
239    
240    
241    
242  /*************************************************  /*************************************************
243  *       Functions for directory scanning         *  *            OS-specific functions               *
244  *************************************************/  *************************************************/
245    
246  /* These functions are defined so that they can be made system specific,  /* These functions are defined so that they can be made system specific,
247  although at present the only ones are for Unix, Win32, and for "no directory  although at present the only ones are for Unix, Win32, and for "no support". */
 recursion support". */  
248    
249    
250  /************* Directory scanning in Unix ***********/  /************* Directory scanning in Unix ***********/
251    
252  #if IS_UNIX  #if defined HAVE_SYS_STAT_H && defined HAVE_DIRENT_H && defined HAVE_SYS_TYPES_H
253  #include <sys/types.h>  #include <sys/types.h>
254  #include <sys/stat.h>  #include <sys/stat.h>
255  #include <dirent.h>  #include <dirent.h>
# Line 184  for (;;) Line 281  for (;;)
281    if (strcmp(dent->d_name, ".") != 0 && strcmp(dent->d_name, "..") != 0)    if (strcmp(dent->d_name, ".") != 0 && strcmp(dent->d_name, "..") != 0)
282      return dent->d_name;      return dent->d_name;
283    }    }
284  return NULL;   /* Keep compiler happy; never executed */  /* Control never reaches here */
285  }  }
286    
287  static void  static void
# Line 194  closedir(dir); Line 291  closedir(dir);
291  }  }
292    
293    
294    /************* Test for regular file in Unix **********/
295    
296    static int
297    isregfile(char *filename)
298    {
299    struct stat statbuf;
300    if (stat(filename, &statbuf) < 0)
301      return 1;        /* In the expectation that opening as a file will fail */
302    return (statbuf.st_mode & S_IFMT) == S_IFREG;
303    }
304    
305    
306    /************* Test stdout for being a terminal in Unix **********/
307    
308    static BOOL
309    is_stdout_tty(void)
310    {
311    return isatty(fileno(stdout));
312    }
313    
314    
315  /************* Directory scanning in Win32 ***********/  /************* Directory scanning in Win32 ***********/
316    
317  /* I (Philip Hazel) have no means of testing this code. It was contributed by  /* I (Philip Hazel) have no means of testing this code. It was contributed by
# Line 201  Lionel Fourquaux. David Burgess added a Line 319  Lionel Fourquaux. David Burgess added a
319  when it did not exist. */  when it did not exist. */
320    
321    
322  #elif HAVE_WIN32API  #elif HAVE_WINDOWS_H
323    
324  #ifndef STRICT  #ifndef STRICT
325  # define STRICT  # define STRICT
# Line 292  free(dir); Line 410  free(dir);
410  }  }
411    
412    
413    /************* Test for regular file in Win32 **********/
414    
415    /* I don't know how to do this, or if it can be done; assume all paths are
416    regular if they are not directories. */
417    
418    int isregfile(char *filename)
419    {
420    return !isdirectory(filename)
421    }
422    
423    
424    /************* Test stdout for being a terminal in Win32 **********/
425    
426    /* I don't know how to do this; assume never */
427    
428    static BOOL
429    is_stdout_tty(void)
430    {
431    FALSE;
432    }
433    
434    
435  /************* Directory scanning when we can't do it ***********/  /************* Directory scanning when we can't do it ***********/
436    
437  /* The type is void, and apart from isdirectory(), the functions do nothing. */  /* The type is void, and apart from isdirectory(), the functions do nothing. */
# Line 300  free(dir); Line 440  free(dir);
440    
441  typedef void directory_type;  typedef void directory_type;
442    
443  int isdirectory(char *filename) { return FALSE; }  int isdirectory(char *filename) { return 0; }
444  directory_type * opendirectory(char *filename) {}  directory_type * opendirectory(char *filename) { return (directory_type*)0;}
445  char *readdirectory(directory_type *dir) {}  char *readdirectory(directory_type *dir) { return (char*)0;}
446  void closedirectory(directory_type *dir) {}  void closedirectory(directory_type *dir) {}
447    
448    
449    /************* Test for regular when we can't do it **********/
450    
451    /* Assume all files are regular. */
452    
453    int isregfile(char *filename) { return 1; }
454    
455    
456    /************* Test stdout for being a terminal when we can't do it **********/
457    
458    static BOOL
459    is_stdout_tty(void)
460    {
461    return FALSE;
462    }
463    
464    
465  #endif  #endif
466    
467    
468    
469  #if ! HAVE_STRERROR  #ifndef HAVE_STRERROR
470  /*************************************************  /*************************************************
471  *     Provide strerror() for non-ANSI libraries  *  *     Provide strerror() for non-ANSI libraries  *
472  *************************************************/  *************************************************/
# Line 332  return sys_errlist[n]; Line 489  return sys_errlist[n];
489    
490    
491  /*************************************************  /*************************************************
492    *             Find end of line                   *
493    *************************************************/
494    
495    /* The length of the endline sequence that is found is set via lenptr. This may
496    be zero at the very end of the file if there is no line-ending sequence there.
497    
498    Arguments:
499      p         current position in line
500      endptr    end of available data
501      lenptr    where to put the length of the eol sequence
502    
503    Returns:    pointer to the last byte of the line
504    */
505    
506    static char *
507    end_of_line(char *p, char *endptr, int *lenptr)
508    {
509    switch(endlinetype)
510      {
511      default:      /* Just in case */
512      case EL_LF:
513      while (p < endptr && *p != '\n') p++;
514      if (p < endptr)
515        {
516        *lenptr = 1;
517        return p + 1;
518        }
519      *lenptr = 0;
520      return endptr;
521    
522      case EL_CR:
523      while (p < endptr && *p != '\r') p++;
524      if (p < endptr)
525        {
526        *lenptr = 1;
527        return p + 1;
528        }
529      *lenptr = 0;
530      return endptr;
531    
532      case EL_CRLF:
533      for (;;)
534        {
535        while (p < endptr && *p != '\r') p++;
536        if (++p >= endptr)
537          {
538          *lenptr = 0;
539          return endptr;
540          }
541        if (*p == '\n')
542          {
543          *lenptr = 2;
544          return p + 1;
545          }
546        }
547      break;
548    
549      case EL_ANYCRLF:
550      while (p < endptr)
551        {
552        int extra = 0;
553        register int c = *((unsigned char *)p);
554    
555        if (utf8 && c >= 0xc0)
556          {
557          int gcii, gcss;
558          extra = utf8_table4[c & 0x3f];  /* Number of additional bytes */
559          gcss = 6*extra;
560          c = (c & utf8_table3[extra]) << gcss;
561          for (gcii = 1; gcii <= extra; gcii++)
562            {
563            gcss -= 6;
564            c |= (p[gcii] & 0x3f) << gcss;
565            }
566          }
567    
568        p += 1 + extra;
569    
570        switch (c)
571          {
572          case 0x0a:    /* LF */
573          *lenptr = 1;
574          return p;
575    
576          case 0x0d:    /* CR */
577          if (p < endptr && *p == 0x0a)
578            {
579            *lenptr = 2;
580            p++;
581            }
582          else *lenptr = 1;
583          return p;
584    
585          default:
586          break;
587          }
588        }   /* End of loop for ANYCRLF case */
589    
590      *lenptr = 0;  /* Must have hit the end */
591      return endptr;
592    
593      case EL_ANY:
594      while (p < endptr)
595        {
596        int extra = 0;
597        register int c = *((unsigned char *)p);
598    
599        if (utf8 && c >= 0xc0)
600          {
601          int gcii, gcss;
602          extra = utf8_table4[c & 0x3f];  /* Number of additional bytes */
603          gcss = 6*extra;
604          c = (c & utf8_table3[extra]) << gcss;
605          for (gcii = 1; gcii <= extra; gcii++)
606            {
607            gcss -= 6;
608            c |= (p[gcii] & 0x3f) << gcss;
609            }
610          }
611    
612        p += 1 + extra;
613    
614        switch (c)
615          {
616          case 0x0a:    /* LF */
617          case 0x0b:    /* VT */
618          case 0x0c:    /* FF */
619          *lenptr = 1;
620          return p;
621    
622          case 0x0d:    /* CR */
623          if (p < endptr && *p == 0x0a)
624            {
625            *lenptr = 2;
626            p++;
627            }
628          else *lenptr = 1;
629          return p;
630    
631          case 0x85:    /* NEL */
632          *lenptr = utf8? 2 : 1;
633          return p;
634    
635          case 0x2028:  /* LS */
636          case 0x2029:  /* PS */
637          *lenptr = 3;
638          return p;
639    
640          default:
641          break;
642          }
643        }   /* End of loop for ANY case */
644    
645      *lenptr = 0;  /* Must have hit the end */
646      return endptr;
647      }     /* End of overall switch */
648    }
649    
650    
651    
652    /*************************************************
653    *         Find start of previous line            *
654    *************************************************/
655    
656    /* This is called when looking back for before lines to print.
657    
658    Arguments:
659      p         start of the subsequent line
660      startptr  start of available data
661    
662    Returns:    pointer to the start of the previous line
663    */
664    
665    static char *
666    previous_line(char *p, char *startptr)
667    {
668    switch(endlinetype)
669      {
670      default:      /* Just in case */
671      case EL_LF:
672      p--;
673      while (p > startptr && p[-1] != '\n') p--;
674      return p;
675    
676      case EL_CR:
677      p--;
678      while (p > startptr && p[-1] != '\n') p--;
679      return p;
680    
681      case EL_CRLF:
682      for (;;)
683        {
684        p -= 2;
685        while (p > startptr && p[-1] != '\n') p--;
686        if (p <= startptr + 1 || p[-2] == '\r') return p;
687        }
688      return p;   /* But control should never get here */
689    
690      case EL_ANY:
691      case EL_ANYCRLF:
692      if (*(--p) == '\n' && p > startptr && p[-1] == '\r') p--;
693      if (utf8) while ((*p & 0xc0) == 0x80) p--;
694    
695      while (p > startptr)
696        {
697        register int c;
698        char *pp = p - 1;
699    
700        if (utf8)
701          {
702          int extra = 0;
703          while ((*pp & 0xc0) == 0x80) pp--;
704          c = *((unsigned char *)pp);
705          if (c >= 0xc0)
706            {
707            int gcii, gcss;
708            extra = utf8_table4[c & 0x3f];  /* Number of additional bytes */
709            gcss = 6*extra;
710            c = (c & utf8_table3[extra]) << gcss;
711            for (gcii = 1; gcii <= extra; gcii++)
712              {
713              gcss -= 6;
714              c |= (pp[gcii] & 0x3f) << gcss;
715              }
716            }
717          }
718        else c = *((unsigned char *)pp);
719    
720        if (endlinetype == EL_ANYCRLF) switch (c)
721          {
722          case 0x0a:    /* LF */
723          case 0x0d:    /* CR */
724          return p;
725    
726          default:
727          break;
728          }
729    
730        else switch (c)
731          {
732          case 0x0a:    /* LF */
733          case 0x0b:    /* VT */
734          case 0x0c:    /* FF */
735          case 0x0d:    /* CR */
736          case 0x85:    /* NEL */
737          case 0x2028:  /* LS */
738          case 0x2029:  /* PS */
739          return p;
740    
741          default:
742          break;
743          }
744    
745        p = pp;  /* Back one character */
746        }        /* End of loop for ANY case */
747    
748      return startptr;  /* Hit start of data */
749      }     /* End of overall switch */
750    }
751    
752    
753    
754    
755    
756    /*************************************************
757  *       Print the previous "after" lines         *  *       Print the previous "after" lines         *
758  *************************************************/  *************************************************/
759    
760  /* This is called if we are about to lose said lines because of buffer filling,  /* This is called if we are about to lose said lines because of buffer filling,
761  and at the end of the file.  and at the end of the file. The data in the line is written using fwrite() so
762    that a binary zero does not terminate it.
763    
764  Arguments:  Arguments:
765    lastmatchnumber   the number of the last matching line, plus one    lastmatchnumber   the number of the last matching line, plus one
# Line 355  if (after_context > 0 && lastmatchnumber Line 778  if (after_context > 0 && lastmatchnumber
778    int count = 0;    int count = 0;
779    while (lastmatchrestart < endptr && count++ < after_context)    while (lastmatchrestart < endptr && count++ < after_context)
780      {      {
781        int ellength;
782      char *pp = lastmatchrestart;      char *pp = lastmatchrestart;
783      if (printname != NULL) fprintf(stdout, "%s-", printname);      if (printname != NULL) fprintf(stdout, "%s-", printname);
784      if (number) fprintf(stdout, "%d-", lastmatchnumber++);      if (number) fprintf(stdout, "%d-", lastmatchnumber++);
785      while (*pp != '\n') pp++;      pp = end_of_line(pp, endptr, &ellength);
786      fprintf(stdout, "%.*s", pp - lastmatchrestart + 1, lastmatchrestart);      fwrite(lastmatchrestart, 1, pp - lastmatchrestart, stdout);
787      lastmatchrestart = pp + 1;      lastmatchrestart = pp;
788      }      }
789    hyphenpending = TRUE;    hyphenpending = TRUE;
790    }    }
# Line 417  way, the buffer is shifted left and re-f Line 841  way, the buffer is shifted left and re-f
841    
842  while (ptr < endptr)  while (ptr < endptr)
843    {    {
844    int i;    int i, endlinelength;
845      int mrc = 0;
846    BOOL match = FALSE;    BOOL match = FALSE;
847    char *t = ptr;    char *t = ptr;
848    size_t length, linelength;    size_t length, linelength;
# Line 429  while (ptr < endptr) Line 854  while (ptr < endptr)
854    line. In multiline mode the PCRE_FIRSTLINE option is used for compiling, so    line. In multiline mode the PCRE_FIRSTLINE option is used for compiling, so
855    that any match is constrained to be in the first line. */    that any match is constrained to be in the first line. */
856    
857    linelength = 0;    t = end_of_line(t, endptr, &endlinelength);
858    while (t < endptr && *t++ != '\n') linelength++;    linelength = t - ptr - endlinelength;
859    length = multiline? endptr - ptr : linelength;    length = multiline? (size_t)(endptr - ptr) : linelength;
860    
861      /* Extra processing for Jeffrey Friedl's debugging. */
862    
863    #ifdef JFRIEDL_DEBUG
864      if (jfriedl_XT || jfriedl_XR)
865      {
866          #include <sys/time.h>
867          #include <time.h>
868          struct timeval start_time, end_time;
869          struct timezone dummy;
870    
871          if (jfriedl_XT)
872          {
873              unsigned long newlen = length * jfriedl_XT + strlen(jfriedl_prefix) + strlen(jfriedl_postfix);
874              const char *orig = ptr;
875              ptr = malloc(newlen + 1);
876              if (!ptr) {
877                      printf("out of memory");
878                      exit(2);
879              }
880              endptr = ptr;
881              strcpy(endptr, jfriedl_prefix); endptr += strlen(jfriedl_prefix);
882              for (i = 0; i < jfriedl_XT; i++) {
883                      strncpy(endptr, orig,  length);
884                      endptr += length;
885              }
886              strcpy(endptr, jfriedl_postfix); endptr += strlen(jfriedl_postfix);
887              length = newlen;
888          }
889    
890          if (gettimeofday(&start_time, &dummy) != 0)
891                  perror("bad gettimeofday");
892    
893    
894          for (i = 0; i < jfriedl_XR; i++)
895              match = (pcre_exec(pattern_list[0], hints_list[0], ptr, length, 0, 0, offsets, 99) >= 0);
896    
897          if (gettimeofday(&end_time, &dummy) != 0)
898                  perror("bad gettimeofday");
899    
900          double delta = ((end_time.tv_sec + (end_time.tv_usec / 1000000.0))
901                          -
902                          (start_time.tv_sec + (start_time.tv_usec / 1000000.0)));
903    
904          printf("%s TIMER[%.4f]\n", match ? "MATCH" : "FAIL", delta);
905          return 0;
906      }
907    #endif
908    
909    
910    /* Run through all the patterns until one matches. Note that we don't include    /* Run through all the patterns until one matches. Note that we don't include
911    the final newline in the subject string. */    the final newline in the subject string. */
912    
913    for (i = 0; !match && i < pattern_count; i++)    for (i = 0; i < pattern_count; i++)
914      {      {
915      match = pcre_exec(pattern_list[i], hints_list[i], ptr, length, 0, 0,      mrc = pcre_exec(pattern_list[i], hints_list[i], ptr, length, 0, 0,
916        offsets, 99) >= 0;        offsets, 99);
917        if (mrc >= 0) { match = TRUE; break; }
918        if (mrc != PCRE_ERROR_NOMATCH)
919          {
920          fprintf(stderr, "pcregrep: pcre_exec() error %d while matching ", mrc);
921          if (pattern_count > 1) fprintf(stderr, "pattern number %d to ", i+1);
922          fprintf(stderr, "this line:\n");
923          fwrite(ptr, 1, linelength, stderr);   /* In case binary zero included */
924          fprintf(stderr, "\n");
925          if (error_count == 0 &&
926              (mrc == PCRE_ERROR_MATCHLIMIT || mrc == PCRE_ERROR_RECURSIONLIMIT))
927            {
928            fprintf(stderr, "pcregrep: error %d means that a resource limit "
929              "was exceeded\n", mrc);
930            fprintf(stderr, "pcregrep: check your regex for nested unlimited loops\n");
931            }
932          if (error_count++ > 20)
933            {
934            fprintf(stderr, "pcregrep: too many errors - abandoned\n");
935            exit(2);
936            }
937          match = invert;    /* No more matching; don't show the line again */
938          break;
939          }
940      }      }
941    
942    /* If it's a match or a not-match (as required), print what's wanted. */    /* If it's a match or a not-match (as required), do what's wanted. */
943    
944    if (match != invert)    if (match != invert)
945      {      {
946      BOOL hyphenprinted = FALSE;      BOOL hyphenprinted = FALSE;
947    
948      if (filenames_nomatch_only) return 1;      /* We've failed if we want a file that doesn't have any matches. */
949    
950        if (filenames == FN_NOMATCH_ONLY) return 1;
951    
952        /* Just count if just counting is wanted. */
953    
954      if (count_only) count++;      if (count_only) count++;
955    
956      else if (filenames_only)      /* If all we want is a file name, there is no need to scan any more lines
957        in the file. */
958    
959        else if (filenames == FN_ONLY)
960        {        {
961        fprintf(stdout, "%s\n", printname);        fprintf(stdout, "%s\n", printname);
962        return 0;        return 0;
963        }        }
964    
965        /* Likewise, if all we want is a yes/no answer. */
966    
967      else if (quiet) return 0;      else if (quiet) return 0;
968    
969        /* The --only-matching option prints just the substring that matched, and
970        does not pring any context. */
971    
972        else if (only_matching)
973          {
974          if (printname != NULL) fprintf(stdout, "%s:", printname);
975          if (number) fprintf(stdout, "%d:", linenumber);
976          fwrite(ptr + offsets[0], 1, offsets[1] - offsets[0], stdout);
977          fprintf(stdout, "\n");
978          }
979    
980        /* This is the default case when none of the above options is set. We print
981        the matching lines(s), possibly preceded and/or followed by other lines of
982        context. */
983    
984      else      else
985        {        {
986        /* See if there is a requirement to print some "after" lines from a        /* See if there is a requirement to print some "after" lines from a
# Line 467  while (ptr < endptr) Line 988  while (ptr < endptr)
988    
989        if (after_context > 0 && lastmatchnumber > 0)        if (after_context > 0 && lastmatchnumber > 0)
990          {          {
991            int ellength;
992          int linecount = 0;          int linecount = 0;
993          char *p = lastmatchrestart;          char *p = lastmatchrestart;
994    
995          while (p < ptr && linecount < after_context)          while (p < ptr && linecount < after_context)
996            {            {
997            while (*p != '\n') p++;            p = end_of_line(p, ptr, &ellength);
           p++;  
998            linecount++;            linecount++;
999            }            }
1000    
1001          /* It is important to advance lastmatchrestart during this printing so          /* It is important to advance lastmatchrestart during this printing so
1002          that it interacts correctly with any "before" printing below. */          that it interacts correctly with any "before" printing below. Print
1003            each line's data using fwrite() in case there are binary zeroes. */
1004    
1005          while (lastmatchrestart < p)          while (lastmatchrestart < p)
1006            {            {
1007            char *pp = lastmatchrestart;            char *pp = lastmatchrestart;
1008            if (printname != NULL) fprintf(stdout, "%s-", printname);            if (printname != NULL) fprintf(stdout, "%s-", printname);
1009            if (number) fprintf(stdout, "%d-", lastmatchnumber++);            if (number) fprintf(stdout, "%d-", lastmatchnumber++);
1010            while (*pp != '\n') pp++;            pp = end_of_line(pp, endptr, &ellength);
1011            fprintf(stdout, "%.*s", pp - lastmatchrestart + 1, lastmatchrestart);            fwrite(lastmatchrestart, 1, pp - lastmatchrestart, stdout);
1012            lastmatchrestart = pp + 1;            lastmatchrestart = pp;
1013            }            }
1014          if (lastmatchrestart != ptr) hyphenpending = TRUE;          if (lastmatchrestart != ptr) hyphenpending = TRUE;
1015          }          }
# Line 510  while (ptr < endptr) Line 1032  while (ptr < endptr)
1032          char *p = ptr;          char *p = ptr;
1033    
1034          while (p > buffer && (lastmatchnumber == 0 || p > lastmatchrestart) &&          while (p > buffer && (lastmatchnumber == 0 || p > lastmatchrestart) &&
1035                 linecount++ < before_context)                 linecount < before_context)
1036            {            {
1037            p--;            linecount++;
1038            while (p > buffer && p[-1] != '\n') p--;            p = previous_line(p, buffer);
1039            }            }
1040    
1041          if (lastmatchnumber > 0 && p > lastmatchrestart && !hyphenprinted)          if (lastmatchnumber > 0 && p > lastmatchrestart && !hyphenprinted)
# Line 521  while (ptr < endptr) Line 1043  while (ptr < endptr)
1043    
1044          while (p < ptr)          while (p < ptr)
1045            {            {
1046              int ellength;
1047            char *pp = p;            char *pp = p;
1048            if (printname != NULL) fprintf(stdout, "%s-", printname);            if (printname != NULL) fprintf(stdout, "%s-", printname);
1049            if (number) fprintf(stdout, "%d-", linenumber - linecount--);            if (number) fprintf(stdout, "%d-", linenumber - linecount--);
1050            while (*pp != '\n') pp++;            pp = end_of_line(pp, endptr, &ellength);
1051            fprintf(stdout, "%.*s", pp - p + 1, p);            fwrite(p, 1, pp - p, stdout);
1052            p = pp + 1;            p = pp;
1053            }            }
1054          }          }
1055    
1056        /* Now print the matching line(s); ensure we set hyphenpending at the end        /* Now print the matching line(s); ensure we set hyphenpending at the end
1057        of the file. */        of the file if any context lines are being output. */
1058    
1059          if (after_context > 0 || before_context > 0)
1060            endhyphenpending = TRUE;
1061    
       endhyphenpending = TRUE;  
1062        if (printname != NULL) fprintf(stdout, "%s:", printname);        if (printname != NULL) fprintf(stdout, "%s:", printname);
1063        if (number) fprintf(stdout, "%d:", linenumber);        if (number) fprintf(stdout, "%d:", linenumber);
1064    
1065        /* In multiline mode, we want to print to the end of the line in which        /* In multiline mode, we want to print to the end of the line in which
1066        the end of the matched string is found, so we adjust linelength and the        the end of the matched string is found, so we adjust linelength and the
1067        line number appropriately. Because the PCRE_FIRSTLINE option is set, the        line number appropriately. Because the PCRE_FIRSTLINE option is set, the
1068        start of the match will always be before the first \n character. */        start of the match will always be before the first newline sequence. */
1069    
1070        if (multiline)        if (multiline)
1071          {          {
1072            int ellength;
1073          char *endmatch = ptr + offsets[1];          char *endmatch = ptr + offsets[1];
1074          t = ptr;          t = ptr;
1075          while (t < endmatch) { if (*t++ == '\n') linenumber++; }          while (t < endmatch)
1076          while (endmatch < endptr && *endmatch != '\n') endmatch++;            {
1077          linelength = endmatch - ptr;            t = end_of_line(t, endptr, &ellength);
1078              if (t <= endmatch) linenumber++; else break;
1079              }
1080            endmatch = end_of_line(endmatch, endptr, &ellength);
1081            linelength = endmatch - ptr - ellength;
1082          }          }
1083    
1084        fprintf(stdout, "%.*s\n", linelength, ptr);        /*** NOTE: Use only fwrite() to output the data line, so that binary
1085          zeroes are treated as just another data character. */
1086    
1087          /* This extra option, for Jeffrey Friedl's debugging requirements,
1088          replaces the matched string, or a specific captured string if it exists,
1089          with X. When this happens, colouring is ignored. */
1090    
1091    #ifdef JFRIEDL_DEBUG
1092          if (S_arg >= 0 && S_arg < mrc)
1093            {
1094            int first = S_arg * 2;
1095            int last  = first + 1;
1096            fwrite(ptr, 1, offsets[first], stdout);
1097            fprintf(stdout, "X");
1098            fwrite(ptr + offsets[last], 1, linelength - offsets[last], stdout);
1099            }
1100          else
1101    #endif
1102    
1103          /* We have to split the line(s) up if colouring. */
1104    
1105          if (do_colour)
1106            {
1107            fwrite(ptr, 1, offsets[0], stdout);
1108            fprintf(stdout, "%c[%sm", 0x1b, colour_string);
1109            fwrite(ptr + offsets[0], 1, offsets[1] - offsets[0], stdout);
1110            fprintf(stdout, "%c[00m", 0x1b);
1111            fwrite(ptr + offsets[1], 1, linelength - offsets[1], stdout);
1112            }
1113          else fwrite(ptr, 1, linelength + endlinelength, stdout);
1114        }        }
1115    
1116        /* End of doing what has to be done for a match */
1117    
1118      rc = 0;    /* Had some success */      rc = 0;    /* Had some success */
1119    
1120      /* Remember where the last match happened for after_context. We remember      /* Remember where the last match happened for after_context. We remember
1121      where we are about to restart, and that line's number. */      where we are about to restart, and that line's number. */
1122    
1123      lastmatchrestart = ptr + linelength + 1;      lastmatchrestart = ptr + linelength + endlinelength;
1124      lastmatchnumber = linenumber + 1;      lastmatchnumber = linenumber + 1;
1125      }      }
1126    
1127    /* Advance to after the newline and increment the line number. */    /* Advance to after the newline and increment the line number. */
1128    
1129    ptr += linelength + 1;    ptr += linelength + endlinelength;
1130    linenumber++;    linenumber++;
1131    
1132    /* If we haven't yet reached the end of the file (the buffer is full), and    /* If we haven't yet reached the end of the file (the buffer is full), and
# Line 599  while (ptr < endptr) Line 1160  while (ptr < endptr)
1160  /* End of file; print final "after" lines if wanted; do_after_lines sets  /* End of file; print final "after" lines if wanted; do_after_lines sets
1161  hyphenpending if it prints something. */  hyphenpending if it prints something. */
1162    
1163  do_after_lines(lastmatchnumber, lastmatchrestart, endptr, printname);  if (!only_matching && !count_only)
1164  hyphenpending |= endhyphenpending;    {
1165      do_after_lines(lastmatchnumber, lastmatchrestart, endptr, printname);
1166      hyphenpending |= endhyphenpending;
1167      }
1168    
1169  /* Print the file name if we are looking for those without matches and there  /* Print the file name if we are looking for those without matches and there
1170  were none. If we found a match, we won't have got this far. */  were none. If we found a match, we won't have got this far. */
1171    
1172  if (filenames_nomatch_only)  if (filenames == FN_NOMATCH_ONLY)
1173    {    {
1174    fprintf(stdout, "%s\n", printname);    fprintf(stdout, "%s\n", printname);
1175    return 0;    return 0;
# Line 633  recursing; if it's a file, grep it. Line 1197  recursing; if it's a file, grep it.
1197    
1198  Arguments:  Arguments:
1199    pathname          the path to investigate    pathname          the path to investigate
1200    dir_recurse       TRUE if recursing is wanted (-r)    dir_recurse       TRUE if recursing is wanted (-r or -drecurse)
   show_filenames    TRUE if file names are wanted for multiple files, except  
                       for the only file at top level when not filenames_only  
1201    only_one_at_top   TRUE if the path is the only one at toplevel    only_one_at_top   TRUE if the path is the only one at toplevel
1202    
1203  Returns:   0 if there was at least one match  Returns:   0 if there was at least one match
# Line 646  However, file opening failures are suppr Line 1208  However, file opening failures are suppr
1208  */  */
1209    
1210  static int  static int
1211  grep_or_recurse(char *pathname, BOOL dir_recurse, BOOL show_filenames,  grep_or_recurse(char *pathname, BOOL dir_recurse, BOOL only_one_at_top)
   BOOL only_one_at_top)  
1212  {  {
1213  int rc = 1;  int rc = 1;
1214  int sep;  int sep;
1215  FILE *in;  FILE *in;
 char *printname;  
1216    
1217  /* If the file name is "-" we scan stdin */  /* If the file name is "-" we scan stdin */
1218    
1219  if (strcmp(pathname, "-") == 0)  if (strcmp(pathname, "-") == 0)
1220    {    {
1221    return pcregrep(stdin,    return pcregrep(stdin,
1222      (filenames_only || filenames_nomatch_only ||      (filenames > FN_DEFAULT || (filenames == FN_DEFAULT && !only_one_at_top))?
     (show_filenames && !only_one_at_top))?  
1223        stdin_name : NULL);        stdin_name : NULL);
1224    }    }
1225    
 /* If the file is a directory and we are recursing, scan each file within it,  
 subject to any include or exclude patterns that were set. The scanning code is  
 localized so it can be made system-specific. */  
1226    
1227  if ((sep = isdirectory(pathname)) != 0 && dir_recurse)  /* If the file is a directory, skip if skipping or if we are recursing, scan
1228    {  each file within it, subject to any include or exclude patterns that were set.
1229    char buffer[1024];  The scanning code is localized so it can be made system-specific. */
   char *nextfile;  
   directory_type *dir = opendirectory(pathname);  
1230    
1231    if (dir == NULL)  if ((sep = isdirectory(pathname)) != 0)
1232      {    {
1233      if (!silent)    if (dee_action == dee_SKIP) return 1;
1234        fprintf(stderr, "pcregrep: Failed to open directory %s: %s\n", pathname,    if (dee_action == dee_RECURSE)
         strerror(errno));  
     return 2;  
     }  
   
   while ((nextfile = readdirectory(dir)) != NULL)  
1235      {      {
1236      int frc, blen;      char buffer[1024];
1237      sprintf(buffer, "%.512s%c%.128s", pathname, sep, nextfile);      char *nextfile;
1238      blen = strlen(buffer);      directory_type *dir = opendirectory(pathname);
1239    
1240      if (exclude_compiled != NULL &&      if (dir == NULL)
1241          pcre_exec(exclude_compiled, NULL, buffer, blen, 0, 0, NULL, 0) >= 0)        {
1242        continue;        if (!silent)
1243            fprintf(stderr, "pcregrep: Failed to open directory %s: %s\n", pathname,
1244              strerror(errno));
1245          return 2;
1246          }
1247    
1248      if (include_compiled != NULL &&      while ((nextfile = readdirectory(dir)) != NULL)
1249          pcre_exec(include_compiled, NULL, buffer, blen, 0, 0, NULL, 0) < 0)        {
1250        continue;        int frc, blen;
1251          sprintf(buffer, "%.512s%c%.128s", pathname, sep, nextfile);
1252          blen = strlen(buffer);
1253    
1254          if (exclude_compiled != NULL &&
1255              pcre_exec(exclude_compiled, NULL, buffer, blen, 0, 0, NULL, 0) >= 0)
1256            continue;
1257    
1258          if (include_compiled != NULL &&
1259              pcre_exec(include_compiled, NULL, buffer, blen, 0, 0, NULL, 0) < 0)
1260            continue;
1261    
1262          frc = grep_or_recurse(buffer, dir_recurse, FALSE);
1263          if (frc > 1) rc = frc;
1264           else if (frc == 0 && rc == 1) rc = 0;
1265          }
1266    
1267      frc = grep_or_recurse(buffer, dir_recurse, TRUE, FALSE);      closedirectory(dir);
1268      if (frc > 1) rc = frc;      return rc;
      else if (frc == 0 && rc == 1) rc = 0;  
1269      }      }
   
   closedirectory(dir);  
   return rc;  
1270    }    }
1271    
1272  /* If the file is not a directory, or we are not recursing, scan it. If this is  /* If the file is not a directory and not a regular file, skip it if that's
1273  the first and only argument at top level, we don't show the file name (unless  been requested. */
1274  we are only showing the file name). Otherwise, control is via the  
1275  show_filenames variable. */  else if (!isregfile(pathname) && DEE_action == DEE_SKIP) return 1;
1276    
1277    /* Control reaches here if we have a regular file, or if we have a directory
1278    and recursion or skipping was not requested, or if we have anything else and
1279    skipping was not requested. The scan proceeds. If this is the first and only
1280    argument at top level, we don't show the file name, unless we are only showing
1281    the file name, or the filename was forced (-H). */
1282    
1283  in = fopen(pathname, "r");  in = fopen(pathname, "r");
1284  if (in == NULL)  if (in == NULL)
# Line 719  if (in == NULL) Line 1289  if (in == NULL)
1289    return 2;    return 2;
1290    }    }
1291    
1292  printname =  (filenames_only || filenames_nomatch_only ||  rc = pcregrep(in, (filenames > FN_DEFAULT ||
1293    (show_filenames && !only_one_at_top))? pathname : NULL;    (filenames == FN_DEFAULT && !only_one_at_top))? pathname : NULL);
   
 rc = pcregrep(in, printname);  
1294    
1295  fclose(in);  fclose(in);
1296  return rc;  return rc;
# Line 738  return rc; Line 1306  return rc;
1306  static int  static int
1307  usage(int rc)  usage(int rc)
1308  {  {
1309  fprintf(stderr, "Usage: pcregrep [-LMVcfhilnqrsvwx] [long-options] [pattern] [file1 file2 ...]\n");  option_item *op;
1310    fprintf(stderr, "Usage: pcregrep [-");
1311    for (op = optionlist; op->one_char != 0; op++)
1312      {
1313      if (op->one_char > 0) fprintf(stderr, "%c", op->one_char);
1314      }
1315    fprintf(stderr, "] [long options] [pattern] [files]\n");
1316  fprintf(stderr, "Type `pcregrep --help' for more information.\n");  fprintf(stderr, "Type `pcregrep --help' for more information.\n");
1317  return rc;  return rc;
1318  }  }
# Line 757  option_item *op; Line 1331  option_item *op;
1331    
1332  printf("Usage: pcregrep [OPTION]... [PATTERN] [FILE1 FILE2 ...]\n");  printf("Usage: pcregrep [OPTION]... [PATTERN] [FILE1 FILE2 ...]\n");
1333  printf("Search for PATTERN in each FILE or standard input.\n");  printf("Search for PATTERN in each FILE or standard input.\n");
1334  printf("PATTERN must be present if -f is not used.\n");  printf("PATTERN must be present if neither -e nor -f is used.\n");
1335  printf("\"-\" can be used as a file name to mean STDIN.\n");  printf("\"-\" can be used as a file name to mean STDIN.\n\n");
1336  printf("Example: pcregrep -i 'hello.*world' menu.h main.c\n\n");  printf("Example: pcregrep -i 'hello.*world' menu.h main.c\n\n");
1337    
1338  printf("Options:\n");  printf("Options:\n");
# Line 794  handle_option(int letter, int options) Line 1368  handle_option(int letter, int options)
1368  {  {
1369  switch(letter)  switch(letter)
1370    {    {
1371    case -1:  help(); exit(0);    case N_HELP: help(); exit(0);
1372    case 'c': count_only = TRUE; break;    case 'c': count_only = TRUE; break;
1373    case 'h': filenames = FALSE; break;    case 'F': process_options |= PO_FIXED_STRINGS; break;
1374      case 'H': filenames = FN_FORCE; break;
1375      case 'h': filenames = FN_NONE; break;
1376    case 'i': options |= PCRE_CASELESS; break;    case 'i': options |= PCRE_CASELESS; break;
1377    case 'l': filenames_only = TRUE; break;    case 'l': filenames = FN_ONLY; break;
1378    case 'L': filenames_nomatch_only = TRUE; break;    case 'L': filenames = FN_NOMATCH_ONLY; break;
1379    case 'M': multiline = TRUE; options |= PCRE_MULTILINE|PCRE_FIRSTLINE; break;    case 'M': multiline = TRUE; options |= PCRE_MULTILINE|PCRE_FIRSTLINE; break;
1380    case 'n': number = TRUE; break;    case 'n': number = TRUE; break;
1381      case 'o': only_matching = TRUE; break;
1382    case 'q': quiet = TRUE; break;    case 'q': quiet = TRUE; break;
1383    case 'r': recurse = TRUE; break;    case 'r': dee_action = dee_RECURSE; break;
1384    case 's': silent = TRUE; break;    case 's': silent = TRUE; break;
1385    case 'u': options |= PCRE_UTF8; break;    case 'u': options |= PCRE_UTF8; utf8 = TRUE; break;
1386    case 'v': invert = TRUE; break;    case 'v': invert = TRUE; break;
1387    case 'w': word_match = TRUE; break;    case 'w': process_options |= PO_WORD_MATCH; break;
1388    case 'x': whole_lines = TRUE; break;    case 'x': process_options |= PO_LINE_MATCH; break;
1389    
1390    case 'V':    case 'V':
1391    fprintf(stderr, "pcregrep version %s using ", VERSION);    fprintf(stderr, "pcregrep version %s\n", pcre_version());
   fprintf(stderr, "PCRE version %s\n", pcre_version());  
1392    exit(0);    exit(0);
1393    break;    break;
1394    
# Line 828  return options; Line 1404  return options;
1404    
1405    
1406  /*************************************************  /*************************************************
1407    *          Construct printed ordinal             *
1408    *************************************************/
1409    
1410    /* This turns a number into "1st", "3rd", etc. */
1411    
1412    static char *
1413    ordin(int n)
1414    {
1415    static char buffer[8];
1416    char *p = buffer;
1417    sprintf(p, "%d", n);
1418    while (*p != 0) p++;
1419    switch (n%10)
1420      {
1421      case 1: strcpy(p, "st"); break;
1422      case 2: strcpy(p, "nd"); break;
1423      case 3: strcpy(p, "rd"); break;
1424      default: strcpy(p, "th"); break;
1425      }
1426    return buffer;
1427    }
1428    
1429    
1430    
1431    /*************************************************
1432    *          Compile a single pattern              *
1433    *************************************************/
1434    
1435    /* When the -F option has been used, this is called for each substring.
1436    Otherwise it's called for each supplied pattern.
1437    
1438    Arguments:
1439      pattern        the pattern string
1440      options        the PCRE options
1441      filename       the file name, or NULL for a command-line pattern
1442      count          0 if this is the only command line pattern, or
1443                     number of the command line pattern, or
1444                     linenumber for a pattern from a file
1445    
1446    Returns:         TRUE on success, FALSE after an error
1447    */
1448    
1449    static BOOL
1450    compile_single_pattern(char *pattern, int options, char *filename, int count)
1451    {
1452    char buffer[MBUFTHIRD + 16];
1453    const char *error;
1454    int errptr;
1455    
1456    if (pattern_count >= MAX_PATTERN_COUNT)
1457      {
1458      fprintf(stderr, "pcregrep: Too many %spatterns (max %d)\n",
1459        (filename == NULL)? "command-line " : "", MAX_PATTERN_COUNT);
1460      return FALSE;
1461      }
1462    
1463    sprintf(buffer, "%s%.*s%s", prefix[process_options], MBUFTHIRD, pattern,
1464      suffix[process_options]);
1465    pattern_list[pattern_count] =
1466      pcre_compile(buffer, options, &error, &errptr, pcretables);
1467    if (pattern_list[pattern_count] != NULL)
1468      {
1469      pattern_count++;
1470      return TRUE;
1471      }
1472    
1473    /* Handle compile errors */
1474    
1475    errptr -= (int)strlen(prefix[process_options]);
1476    if (errptr > (int)strlen(pattern)) errptr = (int)strlen(pattern);
1477    
1478    if (filename == NULL)
1479      {
1480      if (count == 0)
1481        fprintf(stderr, "pcregrep: Error in command-line regex "
1482          "at offset %d: %s\n", errptr, error);
1483      else
1484        fprintf(stderr, "pcregrep: Error in %s command-line regex "
1485          "at offset %d: %s\n", ordin(count), errptr, error);
1486      }
1487    else
1488      {
1489      fprintf(stderr, "pcregrep: Error in regex in line %d of %s "
1490        "at offset %d: %s\n", count, filename, errptr, error);
1491      }
1492    
1493    return FALSE;
1494    }
1495    
1496    
1497    
1498    /*************************************************
1499    *           Compile one supplied pattern         *
1500    *************************************************/
1501    
1502    /* When the -F option has been used, each string may be a list of strings,
1503    separated by line breaks. They will be matched literally.
1504    
1505    Arguments:
1506      pattern        the pattern string
1507      options        the PCRE options
1508      filename       the file name, or NULL for a command-line pattern
1509      count          0 if this is the only command line pattern, or
1510                     number of the command line pattern, or
1511                     linenumber for a pattern from a file
1512    
1513    Returns:         TRUE on success, FALSE after an error
1514    */
1515    
1516    static BOOL
1517    compile_pattern(char *pattern, int options, char *filename, int count)
1518    {
1519    if ((process_options & PO_FIXED_STRINGS) != 0)
1520      {
1521      char *eop = pattern + strlen(pattern);
1522      char buffer[MBUFTHIRD];
1523      for(;;)
1524        {
1525        int ellength;
1526        char *p = end_of_line(pattern, eop, &ellength);
1527        if (ellength == 0)
1528          return compile_single_pattern(pattern, options, filename, count);
1529        sprintf(buffer, "%.*s", (int)(p - pattern - ellength), pattern);
1530        pattern = p;
1531        if (!compile_single_pattern(buffer, options, filename, count))
1532          return FALSE;
1533        }
1534      }
1535    else return compile_single_pattern(pattern, options, filename, count);
1536    }
1537    
1538    
1539    
1540    /*************************************************
1541  *                Main program                    *  *                Main program                    *
1542  *************************************************/  *************************************************/
1543    
# Line 838  main(int argc, char **argv) Line 1548  main(int argc, char **argv)
1548  {  {
1549  int i, j;  int i, j;
1550  int rc = 1;  int rc = 1;
1551  int options = 0;  int pcre_options = 0;
1552    int cmd_pattern_count = 0;
1553    int hint_count = 0;
1554  int errptr;  int errptr;
 const char *error;  
1555  BOOL only_one_at_top;  BOOL only_one_at_top;
1556    char *patterns[MAX_PATTERN_COUNT];
1557    const char *locale_from = "--locale";
1558    const char *error;
1559    
1560    /* Set the default line ending value from the default in the PCRE library;
1561    "lf", "cr", "crlf", and "any" are supported. Anything else is treated as "lf".
1562    */
1563    
1564    (void)pcre_config(PCRE_CONFIG_NEWLINE, &i);
1565    switch(i)
1566      {
1567      default:                 newline = (char *)"lf"; break;
1568      case '\r':               newline = (char *)"cr"; break;
1569      case ('\r' << 8) | '\n': newline = (char *)"crlf"; break;
1570      case -1:                 newline = (char *)"any"; break;
1571      case -2:                 newline = (char *)"anycrlf"; break;
1572      }
1573    
1574  /* Process the options */  /* Process the options */
1575    
# Line 855  for (i = 1; i < argc; i++) Line 1583  for (i = 1; i < argc; i++)
1583    if (argv[i][0] != '-') break;    if (argv[i][0] != '-') break;
1584    
1585    /* If we hit an argument that is just "-", it may be a reference to STDIN,    /* If we hit an argument that is just "-", it may be a reference to STDIN,
1586    but only if we have previously had -f to define the patterns. */    but only if we have previously had -e or -f to define the patterns. */
1587    
1588    if (argv[i][1] == 0)    if (argv[i][1] == 0)
1589      {      {
1590      if (pattern_filename != NULL) break;      if (pattern_filename != NULL || pattern_count > 0) break;
1591        else exit(usage(2));        else exit(usage(2));
1592      }      }
1593    
# Line 881  for (i = 1; i < argc; i++) Line 1609  for (i = 1; i < argc; i++)
1609      /* Some long options have data that follows after =, for example file=name.      /* Some long options have data that follows after =, for example file=name.
1610      Some options have variations in the long name spelling: specifically, we      Some options have variations in the long name spelling: specifically, we
1611      allow "regexp" because GNU grep allows it, though I personally go along      allow "regexp" because GNU grep allows it, though I personally go along
1612      with Jeff Friedl in preferring "regex" without the "p". These options are      with Jeffrey Friedl and Larry Wall in preferring "regex" without the "p".
1613      entered in the table as "regex(p)". No option is in both these categories,      These options are entered in the table as "regex(p)". No option is in both
1614      fortunately. */      these categories, fortunately. */
1615    
1616      for (op = optionlist; op->one_char != 0; op++)      for (op = optionlist; op->one_char != 0; op++)
1617        {        {
# Line 898  for (i = 1; i < argc; i++) Line 1626  for (i = 1; i < argc; i++)
1626          else                 /* Special case xxx=data */          else                 /* Special case xxx=data */
1627            {            {
1628            int oplen = equals - op->long_name;            int oplen = equals - op->long_name;
1629            int arglen = (argequals == NULL)? strlen(arg) : argequals - arg;            int arglen = (argequals == NULL)? (int)strlen(arg) : argequals - arg;
1630            if (oplen == arglen && strncmp(arg, op->long_name, oplen) == 0)            if (oplen == arglen && strncmp(arg, op->long_name, oplen) == 0)
1631              {              {
1632              option_data = arg + arglen;              option_data = arg + arglen;
# Line 917  for (i = 1; i < argc; i++) Line 1645  for (i = 1; i < argc; i++)
1645          char buff2[24];          char buff2[24];
1646          int baselen = opbra - op->long_name;          int baselen = opbra - op->long_name;
1647          sprintf(buff1, "%.*s", baselen, op->long_name);          sprintf(buff1, "%.*s", baselen, op->long_name);
1648          sprintf(buff2, "%s%.*s", buff1, strlen(op->long_name) - baselen - 2,          sprintf(buff2, "%s%.*s", buff1,
1649            opbra + 1);            (int)strlen(op->long_name) - baselen - 2, opbra + 1);
1650          if (strcmp(arg, buff1) == 0 || strcmp(arg, buff2) == 0)          if (strcmp(arg, buff1) == 0 || strcmp(arg, buff2) == 0)
1651            break;            break;
1652          }          }
# Line 931  for (i = 1; i < argc; i++) Line 1659  for (i = 1; i < argc; i++)
1659        }        }
1660      }      }
1661    
1662    
1663      /* Jeffrey Friedl's debugging harness uses these additional options which
1664      are not in the right form for putting in the option table because they use
1665      only one hyphen, yet are more than one character long. By putting them
1666      separately here, they will not get displayed as part of the help() output,
1667      but I don't think Jeffrey will care about that. */
1668    
1669    #ifdef JFRIEDL_DEBUG
1670      else if (strcmp(argv[i], "-pre") == 0) {
1671              jfriedl_prefix = argv[++i];
1672              continue;
1673      } else if (strcmp(argv[i], "-post") == 0) {
1674              jfriedl_postfix = argv[++i];
1675              continue;
1676      } else if (strcmp(argv[i], "-XT") == 0) {
1677              sscanf(argv[++i], "%d", &jfriedl_XT);
1678              continue;
1679      } else if (strcmp(argv[i], "-XR") == 0) {
1680              sscanf(argv[++i], "%d", &jfriedl_XR);
1681              continue;
1682      }
1683    #endif
1684    
1685    
1686    /* One-char options; many that have no data may be in a single argument; we    /* One-char options; many that have no data may be in a single argument; we
1687    continue till we hit the last one or one that needs data. */    continue till we hit the last one or one that needs data. */
1688    
# Line 953  for (i = 1; i < argc; i++) Line 1705  for (i = 1; i < argc; i++)
1705          option_data = s+1;          option_data = s+1;
1706          break;          break;
1707          }          }
1708        options = handle_option(*s++, options);        pcre_options = handle_option(*s++, pcre_options);
1709        }        }
1710      }      }
1711    
1712    /* At this point we should have op pointing to a matched option */    /* At this point we should have op pointing to a matched option. If the type
1713      is NO_DATA, it means that there is no data, and the option might set
1714      something in the PCRE options. */
1715    
1716    if (op->type == OP_NODATA)    if (op->type == OP_NODATA)
     options = handle_option(op->one_char, options);  
   else  
1717      {      {
1718      if (*option_data == 0)      pcre_options = handle_option(op->one_char, pcre_options);
1719        continue;
1720        }
1721    
1722      /* If the option type is OP_OP_STRING or OP_OP_NUMBER, it's an option that
1723      either has a value or defaults to something. It cannot have data in a
1724      separate item. At the moment, the only such options are "colo(u)r" and
1725      Jeffrey Friedl's special -S debugging option. */
1726    
1727      if (*option_data == 0 &&
1728          (op->type == OP_OP_STRING || op->type == OP_OP_NUMBER))
1729        {
1730        switch (op->one_char)
1731        {        {
1732        if (i >= argc - 1 || longopwasequals)        case N_COLOUR:
1733          {        colour_option = (char *)"auto";
1734          fprintf(stderr, "pcregrep: Data missing after %s\n", argv[i]);        break;
1735          exit(usage(2));  #ifdef JFRIEDL_DEBUG
1736          }        case 'S':
1737        option_data = argv[++i];        S_arg = 0;
1738          break;
1739    #endif
1740        }        }
1741        continue;
1742        }
1743    
1744      if (op->type == OP_STRING) *((char **)op->dataptr) = option_data; else    /* Otherwise, find the data string for the option. */
1745    
1746      if (*option_data == 0)
1747        {
1748        if (i >= argc - 1 || longopwasequals)
1749        {        {
1750        char *endptr;        fprintf(stderr, "pcregrep: Data missing after %s\n", argv[i]);
1751        int n = strtoul(option_data, &endptr, 10);        exit(usage(2));
1752        if (*endptr != 0)        }
1753        option_data = argv[++i];
1754        }
1755    
1756      /* If the option type is OP_PATLIST, it's the -e option, which can be called
1757      multiple times to create a list of patterns. */
1758    
1759      if (op->type == OP_PATLIST)
1760        {
1761        if (cmd_pattern_count >= MAX_PATTERN_COUNT)
1762          {
1763          fprintf(stderr, "pcregrep: Too many command-line patterns (max %d)\n",
1764            MAX_PATTERN_COUNT);
1765          return 2;
1766          }
1767        patterns[cmd_pattern_count++] = option_data;
1768        }
1769    
1770      /* Otherwise, deal with single string or numeric data values. */
1771    
1772      else if (op->type != OP_NUMBER && op->type != OP_OP_NUMBER)
1773        {
1774        *((char **)op->dataptr) = option_data;
1775        }
1776      else
1777        {
1778        char *endptr;
1779        int n = strtoul(option_data, &endptr, 10);
1780        if (*endptr != 0)
1781          {
1782          if (longop)
1783          {          {
1784          if (longop)          char *equals = strchr(op->long_name, '=');
1785            fprintf(stderr, "pcregrep: Malformed number \"%s\" after --%s\n",          int nlen = (equals == NULL)? (int)strlen(op->long_name) :
1786              option_data, op->long_name);            equals - op->long_name;
1787          else          fprintf(stderr, "pcregrep: Malformed number \"%s\" after --%.*s\n",
1788            fprintf(stderr, "pcregrep: Malformed number \"%s\" after -%c\n",            option_data, nlen, op->long_name);
             option_data, op->one_char);  
         exit(usage(2));  
1789          }          }
1790        *((int *)op->dataptr) = n;        else
1791            fprintf(stderr, "pcregrep: Malformed number \"%s\" after -%c\n",
1792              option_data, op->one_char);
1793          exit(usage(2));
1794        }        }
1795        *((int *)op->dataptr) = n;
1796      }      }
1797    }    }
1798    
# Line 1001  if (both_context > 0) Line 1805  if (both_context > 0)
1805    if (before_context == 0) before_context = both_context;    if (before_context == 0) before_context = both_context;
1806    }    }
1807    
1808  pattern_list = (pcre **)malloc(MAX_PATTERN_COUNT * sizeof(pcre *));  /* If a locale has not been provided as an option, see if the LC_CTYPE or
1809  hints_list = (pcre_extra **)malloc(MAX_PATTERN_COUNT * sizeof(pcre_extra *));  LC_ALL environment variable is set, and if so, use it. */
1810    
1811  if (pattern_list == NULL || hints_list == NULL)  if (locale == NULL)
1812    {    {
1813    fprintf(stderr, "pcregrep: malloc failed\n");    locale = getenv("LC_ALL");
1814    return 2;    locale_from = "LCC_ALL";
1815    }    }
1816    
1817  /* Compile the regular expression(s). */  if (locale == NULL)
   
 if (pattern_filename != NULL)  
1818    {    {
1819    FILE *f = fopen(pattern_filename, "r");    locale = getenv("LC_CTYPE");
1820    char buffer[MBUFTHIRD + 16];    locale_from = "LC_CTYPE";
1821    char *rdstart;    }
1822    int adjust = 0;  
1823    /* If a locale has been provided, set it, and generate the tables the PCRE
1824    needs. Otherwise, pcretables==NULL, which causes the use of default tables. */
1825    
1826    if (f == NULL)  if (locale != NULL)
1827      {
1828      if (setlocale(LC_CTYPE, locale) == NULL)
1829      {      {
1830      fprintf(stderr, "pcregrep: Failed to open %s: %s\n", pattern_filename,      fprintf(stderr, "pcregrep: Failed to set locale %s (obtained from %s)\n",
1831        strerror(errno));        locale, locale_from);
1832      return 2;      return 2;
1833      }      }
1834      pcretables = pcre_maketables();
1835      }
1836    
1837    /* Sort out colouring */
1838    
1839    if (whole_lines)  if (colour_option != NULL && strcmp(colour_option, "never") != 0)
1840      {
1841      if (strcmp(colour_option, "always") == 0) do_colour = TRUE;
1842      else if (strcmp(colour_option, "auto") == 0) do_colour = is_stdout_tty();
1843      else
1844      {      {
1845      strcpy(buffer, "^(?:");      fprintf(stderr, "pcregrep: Unknown colour setting \"%s\"\n",
1846      adjust = 4;        colour_option);
1847        return 2;
1848      }      }
1849    else if (word_match)    if (do_colour)
1850      {      {
1851      strcpy(buffer, "\\b");      char *cs = getenv("PCREGREP_COLOUR");
1852      adjust = 2;      if (cs == NULL) cs = getenv("PCREGREP_COLOR");
1853        if (cs != NULL) colour_string = cs;
1854      }      }
1855      }
1856    
1857    /* Interpret the newline type; the default settings are Unix-like. */
1858    
1859    rdstart = buffer + adjust;  if (strcmp(newline, "cr") == 0 || strcmp(newline, "CR") == 0)
1860    while (fgets(rdstart, MBUFTHIRD, f) != NULL)    {
1861      pcre_options |= PCRE_NEWLINE_CR;
1862      endlinetype = EL_CR;
1863      }
1864    else if (strcmp(newline, "lf") == 0 || strcmp(newline, "LF") == 0)
1865      {
1866      pcre_options |= PCRE_NEWLINE_LF;
1867      endlinetype = EL_LF;
1868      }
1869    else if (strcmp(newline, "crlf") == 0 || strcmp(newline, "CRLF") == 0)
1870      {
1871      pcre_options |= PCRE_NEWLINE_CRLF;
1872      endlinetype = EL_CRLF;
1873      }
1874    else if (strcmp(newline, "any") == 0 || strcmp(newline, "ANY") == 0)
1875      {
1876      pcre_options |= PCRE_NEWLINE_ANY;
1877      endlinetype = EL_ANY;
1878      }
1879    else if (strcmp(newline, "anycrlf") == 0 || strcmp(newline, "ANYCRLF") == 0)
1880      {
1881      pcre_options |= PCRE_NEWLINE_ANYCRLF;
1882      endlinetype = EL_ANYCRLF;
1883      }
1884    else
1885      {
1886      fprintf(stderr, "pcregrep: Invalid newline specifier \"%s\"\n", newline);
1887      return 2;
1888      }
1889    
1890    /* Interpret the text values for -d and -D */
1891    
1892    if (dee_option != NULL)
1893      {
1894      if (strcmp(dee_option, "read") == 0) dee_action = dee_READ;
1895      else if (strcmp(dee_option, "recurse") == 0) dee_action = dee_RECURSE;
1896      else if (strcmp(dee_option, "skip") == 0) dee_action = dee_SKIP;
1897      else
1898      {      {
1899      char *s = rdstart + (int)strlen(rdstart);      fprintf(stderr, "pcregrep: Invalid value \"%s\" for -d\n", dee_option);
1900      if (pattern_count >= MAX_PATTERN_COUNT)      return 2;
1901        {      }
1902        fprintf(stderr, "pcregrep: Too many patterns in file (max %d)\n",    }
1903          MAX_PATTERN_COUNT);  
1904        return 2;  if (DEE_option != NULL)
1905        }    {
1906      while (s > rdstart && isspace((unsigned char)(s[-1]))) s--;    if (strcmp(DEE_option, "read") == 0) DEE_action = DEE_READ;
1907      if (s == rdstart) continue;    else if (strcmp(DEE_option, "skip") == 0) DEE_action = DEE_SKIP;
1908      if (whole_lines) strcpy(s, ")$");    else
1909        else if (word_match)strcpy(s, "\\b");      {
1910          else *s = 0;      fprintf(stderr, "pcregrep: Invalid value \"%s\" for -D\n", DEE_option);
1911      pattern_list[pattern_count] = pcre_compile(buffer, options, &error,      return 2;
       &errptr, NULL);  
     if (pattern_list[pattern_count++] == NULL)  
       {  
       fprintf(stderr, "pcregrep: Error in regex number %d at offset %d: %s\n",  
         pattern_count, errptr - adjust, error);  
       return 2;  
       }  
1912      }      }
   fclose(f);  
1913    }    }
1914    
1915  /* If no file name, a single regex must be given inline. */  /* Check the values for Jeffrey Friedl's debugging options. */
1916    
1917  else  #ifdef JFRIEDL_DEBUG
1918    if (S_arg > 9)
1919    {    {
1920    char buffer[MBUFTHIRD + 16];    fprintf(stderr, "pcregrep: bad value for -S option\n");
1921    char *pat;    return 2;
1922    int adjust = 0;    }
1923    if (jfriedl_XT != 0 || jfriedl_XR != 0)
1924      {
1925      if (jfriedl_XT == 0) jfriedl_XT = 1;
1926      if (jfriedl_XR == 0) jfriedl_XR = 1;
1927      }
1928    #endif
1929    
1930    /* Get memory to store the pattern and hints lists. */
1931    
1932    pattern_list = (pcre **)malloc(MAX_PATTERN_COUNT * sizeof(pcre *));
1933    hints_list = (pcre_extra **)malloc(MAX_PATTERN_COUNT * sizeof(pcre_extra *));
1934    
1935    if (pattern_list == NULL || hints_list == NULL)
1936      {
1937      fprintf(stderr, "pcregrep: malloc failed\n");
1938      goto EXIT2;
1939      }
1940    
1941    /* If no patterns were provided by -e, and there is no file provided by -f,
1942    the first argument is the one and only pattern, and it must exist. */
1943    
1944    if (cmd_pattern_count == 0 && pattern_filename == NULL)
1945      {
1946    if (i >= argc) return usage(2);    if (i >= argc) return usage(2);
1947      patterns[cmd_pattern_count++] = argv[i++];
1948      }
1949    
1950    /* Compile the patterns that were provided on the command line, either by
1951    multiple uses of -e or as a single unkeyed pattern. */
1952    
1953    if (whole_lines)  for (j = 0; j < cmd_pattern_count; j++)
1954      {
1955      if (!compile_pattern(patterns[j], pcre_options, NULL,
1956           (j == 0 && cmd_pattern_count == 1)? 0 : j + 1))
1957        goto EXIT2;
1958      }
1959    
1960    /* Compile the regular expressions that are provided in a file. */
1961    
1962    if (pattern_filename != NULL)
1963      {
1964      int linenumber = 0;
1965      FILE *f;
1966      char *filename;
1967      char buffer[MBUFTHIRD];
1968    
1969      if (strcmp(pattern_filename, "-") == 0)
1970      {      {
1971      sprintf(buffer, "^(?:%.*s)$", MBUFTHIRD, argv[i++]);      f = stdin;
1972      pat = buffer;      filename = stdin_name;
     adjust = 4;  
1973      }      }
1974    else if (word_match)    else
1975      {      {
1976      sprintf(buffer, "\\b%.*s\\b", MBUFTHIRD, argv[i++]);      f = fopen(pattern_filename, "r");
1977      pat = buffer;      if (f == NULL)
1978      adjust = 2;        {
1979          fprintf(stderr, "pcregrep: Failed to open %s: %s\n", pattern_filename,
1980            strerror(errno));
1981          goto EXIT2;
1982          }
1983        filename = pattern_filename;
1984      }      }
   else pat = argv[i++];  
   
   pattern_list[0] = pcre_compile(pat, options, &error, &errptr, NULL);  
1985    
1986    if (pattern_list[0] == NULL)    while (fgets(buffer, MBUFTHIRD, f) != NULL)
1987      {      {
1988      fprintf(stderr, "pcregrep: Error in regex at offset %d: %s\n",      char *s = buffer + (int)strlen(buffer);
1989        errptr - adjust, error);      while (s > buffer && isspace((unsigned char)(s[-1]))) s--;
1990      return 2;      *s = 0;
1991        linenumber++;
1992        if (buffer[0] == 0) continue;   /* Skip blank lines */
1993        if (!compile_pattern(buffer, pcre_options, filename, linenumber))
1994          goto EXIT2;
1995      }      }
1996    pattern_count++;  
1997      if (f != stdin) fclose(f);
1998    }    }
1999    
2000  /* Study the regular expressions, as we will be running them many times */  /* Study the regular expressions, as we will be running them many times */
# Line 1109  for (j = 0; j < pattern_count; j++) Line 2007  for (j = 0; j < pattern_count; j++)
2007      char s[16];      char s[16];
2008      if (pattern_count == 1) s[0] = 0; else sprintf(s, " number %d", j);      if (pattern_count == 1) s[0] = 0; else sprintf(s, " number %d", j);
2009      fprintf(stderr, "pcregrep: Error while studying regex%s: %s\n", s, error);      fprintf(stderr, "pcregrep: Error while studying regex%s: %s\n", s, error);
2010      return 2;      goto EXIT2;
2011      }      }
2012      hint_count++;
2013    }    }
2014    
2015  /* If there are include or exclude patterns, compile them. */  /* If there are include or exclude patterns, compile them. */
2016    
2017  if (exclude_pattern != NULL)  if (exclude_pattern != NULL)
2018    {    {
2019    exclude_compiled = pcre_compile(exclude_pattern, 0, &error, &errptr, NULL);    exclude_compiled = pcre_compile(exclude_pattern, 0, &error, &errptr,
2020        pcretables);
2021    if (exclude_compiled == NULL)    if (exclude_compiled == NULL)
2022      {      {
2023      fprintf(stderr, "pcregrep: Error in 'exclude' regex at offset %d: %s\n",      fprintf(stderr, "pcregrep: Error in 'exclude' regex at offset %d: %s\n",
2024        errptr, error);        errptr, error);
2025      return 2;      goto EXIT2;
2026      }      }
2027    }    }
2028    
2029  if (include_pattern != NULL)  if (include_pattern != NULL)
2030    {    {
2031    include_compiled = pcre_compile(include_pattern, 0, &error, &errptr, NULL);    include_compiled = pcre_compile(include_pattern, 0, &error, &errptr,
2032        pcretables);
2033    if (include_compiled == NULL)    if (include_compiled == NULL)
2034      {      {
2035      fprintf(stderr, "pcregrep: Error in 'include' regex at offset %d: %s\n",      fprintf(stderr, "pcregrep: Error in 'include' regex at offset %d: %s\n",
2036        errptr, error);        errptr, error);
2037      return 2;      goto EXIT2;
2038      }      }
2039    }    }
2040    
2041  /* If there are no further arguments, do the business on stdin and exit */  /* If there are no further arguments, do the business on stdin and exit. */
2042    
2043  if (i >= argc) return pcregrep(stdin,  if (i >= argc)
2044    (filenames_only || filenames_nomatch_only)? stdin_name : NULL);    {
2045      rc = pcregrep(stdin, (filenames > FN_DEFAULT)? stdin_name : NULL);
2046      goto EXIT;
2047      }
2048    
2049  /* Otherwise, work through the remaining arguments as files or directories.  /* Otherwise, work through the remaining arguments as files or directories.
2050  Pass in the fact that there is only one argument at top level - this suppresses  Pass in the fact that there is only one argument at top level - this suppresses
2051  the file name if the argument is not a directory and filenames_only is not set.  the file name if the argument is not a directory and filenames are not
2052  */  otherwise forced. */
2053    
2054  only_one_at_top = (i == argc - 1);  only_one_at_top = i == argc - 1;   /* Catch initial value of i */
2055    
2056  for (; i < argc; i++)  for (; i < argc; i++)
2057    {    {
2058    int frc = grep_or_recurse(argv[i], recurse, filenames, only_one_at_top);    int frc = grep_or_recurse(argv[i], dee_action == dee_RECURSE,
2059        only_one_at_top);
2060    if (frc > 1) rc = frc;    if (frc > 1) rc = frc;
2061      else if (frc == 0 && rc == 1) rc = 0;      else if (frc == 0 && rc == 1) rc = 0;
2062    }    }
2063    
2064    EXIT:
2065    if (pattern_list != NULL)
2066      {
2067      for (i = 0; i < pattern_count; i++) free(pattern_list[i]);
2068      free(pattern_list);
2069      }
2070    if (hints_list != NULL)
2071      {
2072      for (i = 0; i < hint_count; i++) free(hints_list[i]);
2073      free(hints_list);
2074      }
2075  return rc;  return rc;
2076    
2077    EXIT2:
2078    rc = 2;
2079    goto EXIT;
2080  }  }
2081    
2082  /* End of pcregrep */  /* End of pcregrep */

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