/[pcre]/code/trunk/pcretest.c

Diff of /code/trunk/pcretest.c

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-revision 74 by nigel,
Sat Feb 24 21:40:30 2007 UTC
+revision 75 by nigel,
Sat Feb 24 21:40:37 2007 UTC
 Line 4
  /* This program was hacked up as a tester for PCRE. I really should have
  written it more tidily in the first place. Will I ever learn? It has grown and
- been extended and consequently is now rather untidy in places. */
+ been extended and consequently is now rather untidy in places.
+ -----------------------------------------------------------------------------
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions are met:
+     * Redistributions of source code must retain the above copyright notice,
+       this list of conditions and the following disclaimer.
+     * Redistributions in binary form must reproduce the above copyright
+       notice, this list of conditions and the following disclaimer in the
+       documentation and/or other materials provided with the distribution.
+     * Neither the name of the University of Cambridge nor the names of its
+       contributors may be used to endorse or promote products derived from
+       this software without specific prior written permission.
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ POSSIBILITY OF SUCH DAMAGE.
+ -----------------------------------------------------------------------------
+ */
  #include <ctype.h>
  #include <stdio.h>
-Line 12 
 been extended and consequently is now ra
+Line 42 
 been extended and consequently is now ra
  #include <stdlib.h>
  #include <time.h>
  #include <locale.h>
+ #include <errno.h>
  /* We need the internal info for displaying the results of pcre_study(). Also
  for getting the opcodes for showing compiled code. */
-Line 35 
 Makefile. */
+Line 66 
 Makefile. */
  #endif
  #endif
- #define LOOPREPEAT 50000
+ #define LOOPREPEAT 500000
  #define BUFFER_SIZE 30000
+ #define PBUFFER_SIZE BUFFER_SIZE
  #define DBUFFER_SIZE BUFFER_SIZE
-Line 52 
 static int show_malloc;
+Line 84 
 static int show_malloc;
  static int use_utf8;
  static size_t gotten_store;
+ static uschar *pbuffer = NULL;
  static const int utf8_table1[] = {
 x0000007f, 0x000007ff, 0x0000ffff, 0x001fffff, 0x03ffffff, 0x7fffffff};
-Line 71 
 static const int utf8_table3[] = {
+Line 105 
 static const int utf8_table3[] = {
  /* The code for doing this is held in a separate file that is also included in
  pcre.c when it is compiled with the debug switch. It defines a function called
  print_internals(), which uses a table of opcode lengths defined by the macro
- OP_LENGTHS, whose name must be OP_lengths. */
+ OP_LENGTHS, whose name must be OP_lengths. It also uses a table that translates
+ Unicode property names to numbers; this is kept in a separate file. */
  static uschar OP_lengths[] = { OP_LENGTHS };
+ #include "ucp.h"
+ #include "ucptypetable.c"
  #include "printint.c"
-Line 269 
 data is not zero. */
+Line 306 
 data is not zero. */
  static int callout(pcre_callout_block *cb)
  {
  FILE *f = (first_callout | callout_extra)? outfile : NULL;
- int i, pre_start, post_start;
+ int i, pre_start, post_start, subject_length;
  if (callout_extra)
    {
-Line 300 
 pre_start = pchars((unsigned char *)cb->
+Line 337 
 pre_start = pchars((unsigned char *)cb->
  post_start = pchars((unsigned char *)(cb->subject + cb->start_match),
    cb->current_position - cb->start_match, f);
+ subject_length = pchars((unsigned char *)cb->subject, cb->subject_length, NULL);
  (void)pchars((unsigned char *)(cb->subject + cb->current_position),
    cb->subject_length - cb->current_position, f);
  if (f != NULL) fprintf(f, "\n");
  /* Always print appropriate indicators, with callout number if not already
- shown */
+ shown. For automatic callouts, show the pattern offset. */
- if (callout_extra) fprintf(outfile, "    ");
+ if (cb->callout_number == 255)
-   else fprintf(outfile, "%3d ", cb->callout_number);
+   {
+   fprintf(outfile, "%+3d ", cb->pattern_position);
+   if (cb->pattern_position > 99) fprintf(outfile, "\n    ");
+   }
+ else
+   {
+   if (callout_extra) fprintf(outfile, "    ");
+     else fprintf(outfile, "%3d ", cb->callout_number);
+   }
  for (i = 0; i < pre_start; i++) fprintf(outfile, " ");
  fprintf(outfile, "^");
-Line 320 
 if (post_start > 0)
+Line 367 
 if (post_start > 0)
    fprintf(outfile, "^");
    }
+ for (i = 0; i < subject_length - pre_start - post_start + 4; i++)
+   fprintf(outfile, " ");
+ fprintf(outfile, "%.*s", (cb->next_item_length == 0)? 1 : cb->next_item_length,
+   pbuffer + cb->pattern_position);
  fprintf(outfile, "\n");
  first_callout = 0;
-Line 396 
 if ((rc = pcre_fullinfo(re, study, optio
+Line 449 
 if ((rc = pcre_fullinfo(re, study, optio
  /*************************************************
+ *         Byte flipping function                 *
+ *************************************************/
+ static long int
+ byteflip(long int value, int n)
+ {
+ if (n == 2) return ((value & 0x00ff) << 8) | ((value & 0xff00) >> 8);
+ return ((value & 0x000000ff) << 24) |
+        ((value & 0x0000ff00) <<  8) |
+        ((value & 0x00ff0000) >>  8) |
+        ((value & 0xff000000) >> 24);
+ }
+ /*************************************************
  *                Main Program                    *
  *************************************************/
-Line 429 
 when I am debugging. */
+Line 499 
 when I am debugging. */
  buffer = (unsigned char *)malloc(BUFFER_SIZE);
  dbuffer = (unsigned char *)malloc(DBUFFER_SIZE);
+ pbuffer = (unsigned char *)malloc(PBUFFER_SIZE);
- /* Static so that new_malloc can use it. */
+ /* The outfile variable is static so that new_malloc can use it. The _setmode()
+ stuff is some magic that I don't understand, but which apparently does good
+ things in Windows. It's related to line terminations.  */
+ #if defined(_WIN32) || defined(WIN32)
+ _setmode( _fileno( stdout ), 0x8000 );
+ #endif  /* defined(_WIN32) || defined(WIN32) */
  outfile = stdout;
-Line 462 
 while (argc > 1 && argv[op][0] == '-')
+Line 539 
 while (argc > 1 && argv[op][0] == '-')
      printf("Compiled with\n");
      (void)pcre_config(PCRE_CONFIG_UTF8, &rc);
      printf("  %sUTF-8 support\n", rc? "" : "No ");
+     (void)pcre_config(PCRE_CONFIG_UNICODE_PROPERTIES, &rc);
+     printf("  %sUnicode properties support\n", rc? "" : "No ");
      (void)pcre_config(PCRE_CONFIG_NEWLINE, &rc);
      printf("  Newline character is %s\n", (rc == '\r')? "CR" : "LF");
      (void)pcre_config(PCRE_CONFIG_LINK_SIZE, &rc);
-Line 481 
 while (argc > 1 && argv[op][0] == '-')
+Line 560 
 while (argc > 1 && argv[op][0] == '-')
      printf("  -C     show PCRE compile-time options and exit\n");
      printf("  -d     debug: show compiled code; implies -i\n"
             "  -i     show information about compiled pattern\n"
+            "  -m     output memory used information\n"
             "  -o <n> set size of offsets vector to <n>\n");
  #if !defined NOPOSIX
      printf("  -p     use POSIX interface\n");
  #endif
-     printf("  -s     output store information\n"
+     printf("  -s     output store (memory) used information\n"
             "  -t     time compilation and execution\n");
      return 1;
      }
-Line 508 
 if (offsets == NULL)
+Line 588 
 if (offsets == NULL)
  if (argc > 1)
    {
-   infile = fopen(argv[op], "r");
+   infile = fopen(argv[op], "rb");
    if (infile == NULL)
      {
      printf("** Failed to open %s\n", argv[op]);
-Line 518 
 if (argc > 1)
+Line 598 
 if (argc > 1)
  if (argc > 2)
    {
-   outfile = fopen(argv[op+1], "w");
+   outfile = fopen(argv[op+1], "wb");
    if (outfile == NULL)
      {
      printf("** Failed to open %s\n", argv[op+1]);
-Line 551 
 while (!done)
+Line 631 
 while (!done)
    const char *error;
    unsigned char *p, *pp, *ppp;
+   unsigned char *to_file = NULL;
    const unsigned char *tables = NULL;
+   unsigned long int true_size, true_study_size = 0;
+   size_t size, regex_gotten_store;
    int do_study = 0;
    int do_debug = debug;
    int do_G = 0;
    int do_g = 0;
    int do_showinfo = showinfo;
    int do_showrest = 0;
+   int do_flip = 0;
    int erroroffset, len, delimiter;
    use_utf8 = 0;
-Line 571 
 while (!done)
+Line 655 
 while (!done)
    while (isspace(*p)) p++;
    if (*p == 0) continue;
-   /* Get the delimiter and seek the end of the pattern; if is isn't
+   /* See if the pattern is to be loaded pre-compiled from a file. */
-   complete, read more. */
+   if (*p == '<' && strchr((char *)(p+1), '<') == NULL)
+     {
+     unsigned long int magic;
+     uschar sbuf[8];
+     FILE *f;
+     p++;
+     pp = p + (int)strlen((char *)p);
+     while (isspace(pp[-1])) pp--;
+     *pp = 0;
+     f = fopen((char *)p, "rb");
+     if (f == NULL)
+       {
+       fprintf(outfile, "Failed to open %s: %s\n", p, strerror(errno));
+       continue;
+       }
+     if (fread(sbuf, 1, 8, f) != 8) goto FAIL_READ;
+     true_size =
+       (sbuf[0] << 24) | (sbuf[1] << 16) | (sbuf[2] << 8) | sbuf[3];
+     true_study_size =
+       (sbuf[4] << 24) | (sbuf[5] << 16) | (sbuf[6] << 8) | sbuf[7];
+     re = (real_pcre *)new_malloc(true_size);
+     regex_gotten_store = gotten_store;
+     if (fread(re, 1, true_size, f) != true_size) goto FAIL_READ;
+     magic = ((real_pcre *)re)->magic_number;
+     if (magic != MAGIC_NUMBER)
+       {
+       if (byteflip(magic, sizeof(magic)) == MAGIC_NUMBER)
+         {
+         do_flip = 1;
+         }
+       else
+         {
+         fprintf(outfile, "Data in %s is not a compiled PCRE regex\n", p);
+         fclose(f);
+         continue;
+         }
+       }
+     fprintf(outfile, "Compiled regex%s loaded from %s\n",
+       do_flip? " (byte-inverted)" : "", p);
+     /* Need to know if UTF-8 for printing data strings */
+     new_info(re, NULL, PCRE_INFO_OPTIONS, &options);
+     use_utf8 = (options & PCRE_UTF8) != 0;
+     /* Now see if there is any following study data */
+     if (true_study_size != 0)
+       {
+       pcre_study_data *psd;
+       extra = (pcre_extra *)new_malloc(sizeof(pcre_extra) + true_study_size);
+       extra->flags = PCRE_EXTRA_STUDY_DATA;
+       psd = (pcre_study_data *)(((char *)extra) + sizeof(pcre_extra));
+       extra->study_data = psd;
+       if (fread(psd, 1, true_study_size, f) != true_study_size)
+         {
+         FAIL_READ:
+         fprintf(outfile, "Failed to read data from %s\n", p);
+         if (extra != NULL) new_free(extra);
+         if (re != NULL) new_free(re);
+         fclose(f);
+         continue;
+         }
+       fprintf(outfile, "Study data loaded from %s\n", p);
+       do_study = 1;     /* To get the data output if requested */
+       }
+     else fprintf(outfile, "No study data\n");
+     fclose(f);
+     goto SHOW_INFO;
+     }
+   /* In-line pattern (the usual case). Get the delimiter and seek the end of
+   the pattern; if is isn't complete, read more. */
    delimiter = *p++;
-Line 617 
 while (!done)
+Line 786 
 while (!done)
    if (pp[1] == '\\') *pp++ = '\\';
-   /* Terminate the pattern at the delimiter */
+   /* Terminate the pattern at the delimiter, and save a copy of the pattern
+   for callouts. */
    *pp++ = 0;
+   strcpy((char *)pbuffer, (char *)p);
    /* Look for options after final delimiter */
-Line 639 
 while (!done)
+Line 810 
 while (!done)
        case '+': do_showrest = 1; break;
        case 'A': options |= PCRE_ANCHORED; break;
+       case 'C': options |= PCRE_AUTO_CALLOUT; break;
        case 'D': do_debug = do_showinfo = 1; break;
        case 'E': options |= PCRE_DOLLAR_ENDONLY; break;
+       case 'F': do_flip = 1; break;
        case 'G': do_G = 1; break;
        case 'I': do_showinfo = 1; break;
        case 'M': log_store = 1; break;
-Line 669 
 while (!done)
+Line 842 
 while (!done)
        pp = ppp;
        break;
+       case '>':
+       to_file = pp;
+       while (*pp != 0) pp++;
+       while (isspace(pp[-1])) pp--;
+       *pp = 0;
+       break;
        case '\n': case ' ': break;
        default:
        fprintf(outfile, "** Unknown option '%c'\n", pp[-1]);
        goto SKIP_DATA;
-Line 685 
 while (!done)
+Line 866 
 while (!done)
      {
      int rc;
      int cflags = 0;
      if ((options & PCRE_CASELESS) != 0) cflags |= REG_ICASE;
      if ((options & PCRE_MULTILINE) != 0) cflags |= REG_NEWLINE;
      rc = regcomp(&preg, (char *)p, cflags);
-Line 759 
 while (!done)
+Line 941 
 while (!done)
                sizeof(real_pcre) -
                ((real_pcre *)re)->name_count * ((real_pcre *)re)->name_entry_size));
+     /* Extract the size for possible writing before possibly flipping it,
+     and remember the store that was got. */
+     true_size = ((real_pcre *)re)->size;
+     regex_gotten_store = gotten_store;
+     /* If /S was present, study the regexp to generate additional info to
+     help with the matching. */
+     if (do_study)
+       {
+       if (timeit)
+         {
+         register int i;
+         clock_t time_taken;
+         clock_t start_time = clock();
+         for (i = 0; i < LOOPREPEAT; i++)
+           extra = pcre_study(re, study_options, &error);
+         time_taken = clock() - start_time;
+         if (extra != NULL) free(extra);
+         fprintf(outfile, "  Study time %.3f milliseconds\n",
+           (((double)time_taken * 1000.0) / (double)LOOPREPEAT) /
+             (double)CLOCKS_PER_SEC);
+         }
+       extra = pcre_study(re, study_options, &error);
+       if (error != NULL)
+         fprintf(outfile, "Failed to study: %s\n", error);
+       else if (extra != NULL)
+         true_study_size = ((pcre_study_data *)(extra->study_data))->size;
+       }
+     /* If the 'F' option was present, we flip the bytes of all the integer
+     fields in the regex data block and the study block. This is to make it
+     possible to test PCRE's handling of byte-flipped patterns, e.g. those
+     compiled on a different architecture. */
+     if (do_flip)
+       {
+       real_pcre *rre = (real_pcre *)re;
+       rre->magic_number = byteflip(rre->magic_number, sizeof(rre->magic_number));
+       rre->size = byteflip(rre->size, sizeof(rre->size));
+       rre->options = byteflip(rre->options, sizeof(rre->options));
+       rre->top_bracket = byteflip(rre->top_bracket, sizeof(rre->top_bracket));
+       rre->top_backref = byteflip(rre->top_backref, sizeof(rre->top_backref));
+       rre->first_byte = byteflip(rre->first_byte, sizeof(rre->first_byte));
+       rre->req_byte = byteflip(rre->req_byte, sizeof(rre->req_byte));
+       rre->name_table_offset = byteflip(rre->name_table_offset,
+         sizeof(rre->name_table_offset));
+       rre->name_entry_size = byteflip(rre->name_entry_size,
+         sizeof(rre->name_entry_size));
+       rre->name_count = byteflip(rre->name_count, sizeof(rre->name_count));
+       if (extra != NULL)
+         {
+         pcre_study_data *rsd = (pcre_study_data *)(extra->study_data);
+         rsd->size = byteflip(rsd->size, sizeof(rsd->size));
+         rsd->options = byteflip(rsd->options, sizeof(rsd->options));
+         }
+       }
+     /* Extract information from the compiled data if required */
+     SHOW_INFO:
      if (do_showinfo)
        {
-       unsigned long int get_options;
+       unsigned long int get_options, all_options;
        int old_first_char, old_options, old_count;
        int count, backrefmax, first_char, need_char;
        int nameentrysize, namecount;
        const uschar *nametable;
-       size_t size;
        if (do_debug)
          {
-Line 802 
 while (!done)
+Line 1047 
 while (!done)
              get_options, old_options);
          }
-       if (size != gotten_store) fprintf(outfile,
+       if (size != regex_gotten_store) fprintf(outfile,
          "Size disagreement: pcre_fullinfo=%d call to malloc for %d\n",
-         size, gotten_store);
+         size, regex_gotten_store);
        fprintf(outfile, "Capturing subpattern count = %d\n", count);
        if (backrefmax > 0)
-Line 822 
 while (!done)
+Line 1067 
 while (!done)
            }
          }
+       /* The NOPARTIAL bit is a private bit in the options, so we have
+       to fish it out via out back door */
+       all_options = ((real_pcre *)re)->options;
+       if (do_flip)
+         {
+         all_options = byteflip(all_options, sizeof(all_options));
+         }
+       if ((all_options & PCRE_NOPARTIAL) != 0)
+         fprintf(outfile, "Partial matching not supported\n");
        if (get_options == 0) fprintf(outfile, "No options\n");
          else fprintf(outfile, "Options:%s%s%s%s%s%s%s%s%s%s\n",
            ((get_options & PCRE_ANCHORED) != 0)? " anchored" : "",
-Line 871 
 while (!done)
+Line 1128 
 while (!done)
          else
            fprintf(outfile, "Need char = %d%s\n", ch, caseless);
          }
-       }
-     /* If /S was present, study the regexp to generate additional info to
-     help with the matching. */
-     if (do_study)
-       {
-       if (timeit)
-         {
-         register int i;
-         clock_t time_taken;
-         clock_t start_time = clock();
-         for (i = 0; i < LOOPREPEAT; i++)
-           extra = pcre_study(re, study_options, &error);
-         time_taken = clock() - start_time;
-         if (extra != NULL) free(extra);
-         fprintf(outfile, "  Study time %.3f milliseconds\n",
-           (((double)time_taken * 1000.0) / (double)LOOPREPEAT) /
-             (double)CLOCKS_PER_SEC);
-         }
-       extra = pcre_study(re, study_options, &error);
-       if (error != NULL)
-         fprintf(outfile, "Failed to study: %s\n", error);
-       else if (extra == NULL)
-         fprintf(outfile, "Study returned NULL\n");
        /* Don't output study size; at present it is in any case a fixed
        value, but it varies, depending on the computer architecture, and
-       so messes up the test suite. */
+       so messes up the test suite. (And with the /F option, it might be
+       flipped.) */
-       else if (do_showinfo)
+       if (do_study)
          {
-         size_t size;
+         if (extra == NULL)
-         uschar *start_bits = NULL;
+           fprintf(outfile, "Study returned NULL\n");
-         new_info(re, extra, PCRE_INFO_STUDYSIZE, &size);
-         new_info(re, extra, PCRE_INFO_FIRSTTABLE, &start_bits);
-         /* fprintf(outfile, "Study size = %d\n", size); */
-         if (start_bits == NULL)
-           fprintf(outfile, "No starting character set\n");
          else
            {
-           int i;
+           uschar *start_bits = NULL;
-           int c = 24;
+           new_info(re, extra, PCRE_INFO_FIRSTTABLE, &start_bits);
-           fprintf(outfile, "Starting character set: ");
-           for (i = 0; i < 256; i++)
+           if (start_bits == NULL)
+             fprintf(outfile, "No starting byte set\n");
+           else
              {
-             if ((start_bits[i/8] & (1<<(i%8))) != 0)
+             int i;
+             int c = 24;
+             fprintf(outfile, "Starting byte set: ");
+             for (i = 0; i < 256; i++)
                {
-               if (c > 75)
+               if ((start_bits[i/8] & (1<<(i&7))) != 0)
-                 {
-                 fprintf(outfile, "\n  ");
-                 c = 2;
-                 }
-               if (isprint(i) && i != ' ')
                  {
-                 fprintf(outfile, "%c ", i);
+                 if (c > 75)
-                 c += 2;
+                   {
-                 }
+                   fprintf(outfile, "\n  ");
-               else
+                   c = 2;
-                 {
+                   }
-                 fprintf(outfile, "\\x%02x ", i);
+                 if (isprint(i) && i != ' ')
-                 c += 5;
+                   {
+                   fprintf(outfile, "%c ", i);
+                   c += 2;
+                   }
+                 else
+                   {
+                   fprintf(outfile, "\\x%02x ", i);
+                   c += 5;
+                   }
                  }
                }
+             fprintf(outfile, "\n");
              }
-           fprintf(outfile, "\n");
            }
          }
        }
-     }
+     /* If the '>' option was present, we write out the regex to a file, and
+     that is all. The first 8 bytes of the file are the regex length and then
+     the study length, in big-endian order. */
+     if (to_file != NULL)
+       {
+       FILE *f = fopen((char *)to_file, "wb");
+       if (f == NULL)
+         {
+         fprintf(outfile, "Unable to open %s: %s\n", to_file, strerror(errno));
+         }
+       else
+         {
+         uschar sbuf[8];
+         sbuf[0] = (true_size >> 24)  & 255;
+         sbuf[1] = (true_size >> 16)  & 255;
+         sbuf[2] = (true_size >>  8)  & 255;
+         sbuf[3] = (true_size)  & 255;
+         sbuf[4] = (true_study_size >> 24)  & 255;
+         sbuf[5] = (true_study_size >> 16)  & 255;
+         sbuf[6] = (true_study_size >>  8)  & 255;
+         sbuf[7] = (true_study_size)  & 255;
+         if (fwrite(sbuf, 1, 8, f) < 8 ||
+             fwrite(re, 1, true_size, f) < true_size)
+           {
+           fprintf(outfile, "Write error on %s: %s\n", to_file, strerror(errno));
+           }
+         else
+           {
+           fprintf(outfile, "Compiled regex written to %s\n", to_file);
+           if (extra != NULL)
+             {
+             if (fwrite(extra->study_data, 1, true_study_size, f) <
+                 true_study_size)
+               {
+               fprintf(outfile, "Write error on %s: %s\n", to_file,
+                 strerror(errno));
+               }
+             else fprintf(outfile, "Study data written to %s\n", to_file);
+             }
+           }
+         fclose(f);
+         }
+       continue;  /* With next regex */
+       }
+     }        /* End of non-POSIX compile */
    /* Read data lines and test them */
-Line 1045 
 while (!done)
+Line 1328 
 while (!done)
            }
          break;
-         case 0:   /* Allows for an empty line */
+         case 0:   /* \ followed by EOF allows for an empty line */
          p--;
          continue;
+         case '>':
+         while(isdigit(*p)) start_offset = start_offset * 10 + *p++ - '0';
+         continue;
          case 'A':  /* Option setting */
          options |= PCRE_ANCHORED;
          continue;
-Line 1159 
 while (!done)
+Line 1446 
 while (!done)
          if (n == 0) use_offsets = NULL;   /* Ensures it can't write to it */
          continue;
+         case 'P':
+         options |= PCRE_PARTIAL;
+         continue;
          case 'S':
          show_malloc = 1;
          continue;
-Line 1269 
 while (!done)
+Line 1560 
 while (!done)
              min = mid;
              mid = (mid == max - 1)? max : (max > 0)? (min + max)/2 : mid*2;
              }
-           else if (count >= 0 || count == PCRE_ERROR_NOMATCH)
+           else if (count >= 0 || count == PCRE_ERROR_NOMATCH ||
+                                  count == PCRE_ERROR_PARTIAL)
              {
              if (mid == min + 1)
                {
-Line 1305 
 while (!done)
+Line 1597 
 while (!done)
        /* The normal case is just to do the match once, with the default
        value of match_limit. */
-       else count = pcre_exec(re, extra, (char *)bptr, len,
+       else
-         start_offset, options | g_notempty, use_offsets, use_size_offsets);
+         {
+         count = pcre_exec(re, extra, (char *)bptr, len,
+           start_offset, options | g_notempty, use_offsets, use_size_offsets);
+         }
        if (count == 0)
          {
-Line 1393 
 while (!done)
+Line 1688 
 while (!done)
            }
          }
+       /* There was a partial match */
+       else if (count == PCRE_ERROR_PARTIAL)
+         {
+         fprintf(outfile, "Partial match\n");
+         break;  /* Out of the /g loop */
+         }
        /* Failed to match. If this is a /g or /G loop and we previously set
        g_notempty after a null match, this is not necessarily the end.
        We want to advance the start offset, and continue. In the case of UTF-8

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+Added in v.75

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