/[pcre]/code/trunk/pcregrep.c
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revision 514 by ph10, Mon Oct 5 10:59:35 2009 UTC revision 515 by ph10, Tue May 4 09:12:25 2010 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) 1997-2009 University of Cambridge             Copyright (c) 1997-2010 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 104  enum { DEE_READ, DEE_SKIP }; Line 104  enum { DEE_READ, DEE_SKIP };
104    
105  enum { EL_LF, EL_CR, EL_CRLF, EL_ANY, EL_ANYCRLF };  enum { EL_LF, EL_CR, EL_CRLF, EL_ANY, EL_ANYCRLF };
106    
107    /* In newer versions of gcc, with FORTIFY_SOURCE set (the default in some
108    environments), a warning is issued if the value of fwrite() is ignored.
109    Unfortunately, casting to (void) does not suppress the warning. To get round
110    this, we use a macro that compiles a fudge. Oddly, this does not also seem to
111    apply to fprintf(). */
112    
113    #define FWRITE(a,b,c,d) if (fwrite(a,b,c,d)) {}
114    
115    
116    
117  /*************************************************  /*************************************************
# Line 813  if (after_context > 0 && lastmatchnumber Line 821  if (after_context > 0 && lastmatchnumber
821      if (printname != NULL) fprintf(stdout, "%s-", printname);      if (printname != NULL) fprintf(stdout, "%s-", printname);
822      if (number) fprintf(stdout, "%d-", lastmatchnumber++);      if (number) fprintf(stdout, "%d-", lastmatchnumber++);
823      pp = end_of_line(pp, endptr, &ellength);      pp = end_of_line(pp, endptr, &ellength);
824      fwrite(lastmatchrestart, 1, pp - lastmatchrestart, stdout);      FWRITE(lastmatchrestart, 1, pp - lastmatchrestart, stdout);
825      lastmatchrestart = pp;      lastmatchrestart = pp;
826      }      }
827    hyphenpending = TRUE;    hyphenpending = TRUE;
# Line 854  for (i = 0; i < pattern_count; i++) Line 862  for (i = 0; i < pattern_count; i++)
862    fprintf(stderr, "pcregrep: pcre_exec() error %d while matching ", *mrc);    fprintf(stderr, "pcregrep: pcre_exec() error %d while matching ", *mrc);
863    if (pattern_count > 1) fprintf(stderr, "pattern number %d to ", i+1);    if (pattern_count > 1) fprintf(stderr, "pattern number %d to ", i+1);
864    fprintf(stderr, "this text:\n");    fprintf(stderr, "this text:\n");
865    fwrite(matchptr, 1, length, stderr);  /* In case binary zero included */    FWRITE(matchptr, 1, length, stderr);   /* In case binary zero included */
866    fprintf(stderr, "\n");    fprintf(stderr, "\n");
867    if (error_count == 0 &&    if (error_count == 0 &&
868        (*mrc == PCRE_ERROR_MATCHLIMIT || *mrc == PCRE_ERROR_RECURSIONLIMIT))        (*mrc == PCRE_ERROR_MATCHLIMIT || *mrc == PCRE_ERROR_RECURSIONLIMIT))
# Line 1095  while (ptr < endptr) Line 1103  while (ptr < endptr)
1103          else          else
1104            {            {
1105            if (do_colour) fprintf(stdout, "%c[%sm", 0x1b, colour_string);            if (do_colour) fprintf(stdout, "%c[%sm", 0x1b, colour_string);
1106            fwrite(matchptr + offsets[0], 1, offsets[1] - offsets[0], stdout);            FWRITE(matchptr + offsets[0], 1, offsets[1] - offsets[0], stdout);
1107            if (do_colour) fprintf(stdout, "%c[00m", 0x1b);            if (do_colour) fprintf(stdout, "%c[00m", 0x1b);
1108            }            }
1109          fprintf(stdout, "\n");          fprintf(stdout, "\n");
# Line 1137  while (ptr < endptr) Line 1145  while (ptr < endptr)
1145            if (printname != NULL) fprintf(stdout, "%s-", printname);            if (printname != NULL) fprintf(stdout, "%s-", printname);
1146            if (number) fprintf(stdout, "%d-", lastmatchnumber++);            if (number) fprintf(stdout, "%d-", lastmatchnumber++);
1147            pp = end_of_line(pp, endptr, &ellength);            pp = end_of_line(pp, endptr, &ellength);
1148            fwrite(lastmatchrestart, 1, pp - lastmatchrestart, stdout);            FWRITE(lastmatchrestart, 1, pp - lastmatchrestart, stdout);
1149            lastmatchrestart = pp;            lastmatchrestart = pp;
1150            }            }
1151          if (lastmatchrestart != ptr) hyphenpending = TRUE;          if (lastmatchrestart != ptr) hyphenpending = TRUE;
# Line 1177  while (ptr < endptr) Line 1185  while (ptr < endptr)
1185            if (printname != NULL) fprintf(stdout, "%s-", printname);            if (printname != NULL) fprintf(stdout, "%s-", printname);
1186            if (number) fprintf(stdout, "%d-", linenumber - linecount--);            if (number) fprintf(stdout, "%d-", linenumber - linecount--);
1187            pp = end_of_line(pp, endptr, &ellength);            pp = end_of_line(pp, endptr, &ellength);
1188            fwrite(p, 1, pp - p, stdout);            FWRITE(p, 1, pp - p, stdout);
1189            p = pp;            p = pp;
1190            }            }
1191          }          }
# Line 1227  while (ptr < endptr) Line 1235  while (ptr < endptr)
1235          {          {
1236          int first = S_arg * 2;          int first = S_arg * 2;
1237          int last  = first + 1;          int last  = first + 1;
1238          fwrite(ptr, 1, offsets[first], stdout);          FWRITE(ptr, 1, offsets[first], stdout);
1239          fprintf(stdout, "X");          fprintf(stdout, "X");
1240          fwrite(ptr + offsets[last], 1, linelength - offsets[last], stdout);          FWRITE(ptr + offsets[last], 1, linelength - offsets[last], stdout);
1241          }          }
1242        else        else
1243  #endif  #endif
# Line 1240  while (ptr < endptr) Line 1248  while (ptr < endptr)
1248        if (do_colour)        if (do_colour)
1249          {          {
1250          int last_offset = 0;          int last_offset = 0;
1251          fwrite(ptr, 1, offsets[0], stdout);          FWRITE(ptr, 1, offsets[0], stdout);
1252          fprintf(stdout, "%c[%sm", 0x1b, colour_string);          fprintf(stdout, "%c[%sm", 0x1b, colour_string);
1253          fwrite(ptr + offsets[0], 1, offsets[1] - offsets[0], stdout);          FWRITE(ptr + offsets[0], 1, offsets[1] - offsets[0], stdout);
1254          fprintf(stdout, "%c[00m", 0x1b);          fprintf(stdout, "%c[00m", 0x1b);
1255          for (;;)          for (;;)
1256            {            {
# Line 1250  while (ptr < endptr) Line 1258  while (ptr < endptr)
1258            matchptr += offsets[1];            matchptr += offsets[1];
1259            length -= offsets[1];            length -= offsets[1];
1260            if (!match_patterns(matchptr, length, offsets, &mrc)) break;            if (!match_patterns(matchptr, length, offsets, &mrc)) break;
1261            fwrite(matchptr, 1, offsets[0], stdout);            FWRITE(matchptr, 1, offsets[0], stdout);
1262            fprintf(stdout, "%c[%sm", 0x1b, colour_string);            fprintf(stdout, "%c[%sm", 0x1b, colour_string);
1263            fwrite(matchptr + offsets[0], 1, offsets[1] - offsets[0], stdout);            FWRITE(matchptr + offsets[0], 1, offsets[1] - offsets[0], stdout);
1264            fprintf(stdout, "%c[00m", 0x1b);            fprintf(stdout, "%c[00m", 0x1b);
1265            }            }
1266          fwrite(ptr + last_offset, 1, (linelength + endlinelength) - last_offset,          FWRITE(ptr + last_offset, 1,
1267            stdout);            (linelength + endlinelength) - last_offset, stdout);
1268          }          }
1269    
1270        /* Not colouring; no need to search for further matches */        /* Not colouring; no need to search for further matches */
1271    
1272        else fwrite(ptr, 1, linelength + endlinelength, stdout);        else FWRITE(ptr, 1, linelength + endlinelength, stdout);
1273        }        }
1274    
1275      /* End of doing what has to be done for a match */      /* End of doing what has to be done for a match */
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