/[pcre]/code/tags/pcre-8.01/pcregrep.c
ViewVC logotype

Diff of /code/tags/pcre-8.01/pcregrep.c

Parent Directory Parent Directory | Revision Log Revision Log | View Patch Patch

revision 77 by nigel, Sat Feb 24 21:40:45 2007 UTC revision 377 by ph10, Sun Mar 1 12:07:19 2009 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) 1997-2009 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    #ifdef SUPPORT_LIBZ
59    #include <zlib.h>
60    #endif
61    
62    #ifdef SUPPORT_LIBBZ2
63    #include <bzlib.h>
64    #endif
65    
 #include "config.h"  
66  #include "pcre.h"  #include "pcre.h"
67    
68  #define FALSE 0  #define FALSE 0
# Line 55  POSSIBILITY OF SUCH DAMAGE. Line 70  POSSIBILITY OF SUCH DAMAGE.
70    
71  typedef int BOOL;  typedef int BOOL;
72    
 #define VERSION "4.0 07-Jun-2005"  
73  #define MAX_PATTERN_COUNT 100  #define MAX_PATTERN_COUNT 100
74    
75  #if BUFSIZ > 8192  #if BUFSIZ > 8192
# Line 64  typedef int BOOL; Line 78  typedef int BOOL;
78  #define MBUFTHIRD 8192  #define MBUFTHIRD 8192
79  #endif  #endif
80    
81    /* Values for the "filenames" variable, which specifies options for file name
82    output. The order is important; it is assumed that a file name is wanted for
83    all values greater than FN_DEFAULT. */
84    
85    enum { FN_NONE, FN_DEFAULT, FN_ONLY, FN_NOMATCH_ONLY, FN_FORCE };
86    
87    /* File reading styles */
88    
89    enum { FR_PLAIN, FR_LIBZ, FR_LIBBZ2 };
90    
91    /* Actions for the -d and -D options */
92    
93    enum { dee_READ, dee_SKIP, dee_RECURSE };
94    enum { DEE_READ, DEE_SKIP };
95    
96    /* Actions for special processing options (flag bits) */
97    
98    #define PO_WORD_MATCH     0x0001
99    #define PO_LINE_MATCH     0x0002
100    #define PO_FIXED_STRINGS  0x0004
101    
102    /* Line ending types */
103    
104    enum { EL_LF, EL_CR, EL_CRLF, EL_ANY, EL_ANYCRLF };
105    
106    
107    
108  /*************************************************  /*************************************************
109  *               Global variables                 *  *               Global variables                 *
110  *************************************************/  *************************************************/
111    
112    /* Jeffrey Friedl has some debugging requirements that are not part of the
113    regular code. */
114    
115    #ifdef JFRIEDL_DEBUG
116    static int S_arg = -1;
117    static unsigned int jfriedl_XR = 0; /* repeat regex attempt this many times */
118    static unsigned int jfriedl_XT = 0; /* replicate text this many times */
119    static const char *jfriedl_prefix = "";
120    static const char *jfriedl_postfix = "";
121    #endif
122    
123    static int  endlinetype;
124    
125    static char *colour_string = (char *)"1;31";
126    static char *colour_option = NULL;
127    static char *dee_option = NULL;
128    static char *DEE_option = NULL;
129    static char *newline = NULL;
130  static char *pattern_filename = NULL;  static char *pattern_filename = NULL;
131  static char *stdin_name = (char *)"(standard input)";  static char *stdin_name = (char *)"(standard input)";
132    static char *locale = NULL;
133    
134    static const unsigned char *pcretables = NULL;
135    
136  static int  pattern_count = 0;  static int  pattern_count = 0;
137  static pcre **pattern_list;  static pcre **pattern_list = NULL;
138  static pcre_extra **hints_list;  static pcre_extra **hints_list = NULL;
139    
140  static char *include_pattern = NULL;  static char *include_pattern = NULL;
141  static char *exclude_pattern = NULL;  static char *exclude_pattern = NULL;
142    static char *include_dir_pattern = NULL;
143    static char *exclude_dir_pattern = NULL;
144    
145  static pcre *include_compiled = NULL;  static pcre *include_compiled = NULL;
146  static pcre *exclude_compiled = NULL;  static pcre *exclude_compiled = NULL;
147    static pcre *include_dir_compiled = NULL;
148    static pcre *exclude_dir_compiled = NULL;
149    
150  static int after_context = 0;  static int after_context = 0;
151  static int before_context = 0;  static int before_context = 0;
152  static int both_context = 0;  static int both_context = 0;
153    static int dee_action = dee_READ;
154    static int DEE_action = DEE_READ;
155    static int error_count = 0;
156    static int filenames = FN_DEFAULT;
157    static int process_options = 0;
158    
159  static BOOL count_only = FALSE;  static BOOL count_only = FALSE;
160  static BOOL filenames = TRUE;  static BOOL do_colour = FALSE;
161  static BOOL filenames_only = FALSE;  static BOOL file_offsets = FALSE;
 static BOOL filenames_nomatch_only = FALSE;  
162  static BOOL hyphenpending = FALSE;  static BOOL hyphenpending = FALSE;
163  static BOOL invert = FALSE;  static BOOL invert = FALSE;
164    static BOOL line_offsets = FALSE;
165  static BOOL multiline = FALSE;  static BOOL multiline = FALSE;
166  static BOOL number = FALSE;  static BOOL number = FALSE;
167    static BOOL only_matching = FALSE;
168  static BOOL quiet = FALSE;  static BOOL quiet = FALSE;
 static BOOL recurse = FALSE;  
169  static BOOL silent = FALSE;  static BOOL silent = FALSE;
170  static BOOL whole_lines = FALSE;  static BOOL utf8 = FALSE;
 static BOOL word_match = FALSE;  
171    
172  /* Structure for options and list of them */  /* Structure for options and list of them */
173    
174  enum { OP_NODATA, OP_STRING, OP_NUMBER };  enum { OP_NODATA, OP_STRING, OP_OP_STRING, OP_NUMBER, OP_OP_NUMBER,
175           OP_PATLIST };
176    
177  typedef struct option_item {  typedef struct option_item {
178    int type;    int type;
# Line 112  typedef struct option_item { Line 182  typedef struct option_item {
182    const char *help_text;    const char *help_text;
183  } option_item;  } option_item;
184    
185    /* Options without a single-letter equivalent get a negative value. This can be
186    used to identify them. */
187    
188    #define N_COLOUR       (-1)
189    #define N_EXCLUDE      (-2)
190    #define N_EXCLUDE_DIR  (-3)
191    #define N_HELP         (-4)
192    #define N_INCLUDE      (-5)
193    #define N_INCLUDE_DIR  (-6)
194    #define N_LABEL        (-7)
195    #define N_LOCALE       (-8)
196    #define N_NULL         (-9)
197    #define N_LOFFSETS     (-10)
198    #define N_FOFFSETS     (-11)
199    
200  static option_item optionlist[] = {  static option_item optionlist[] = {
201    { OP_NODATA, -1,  NULL,              "",              "  terminate options" },    { OP_NODATA,    N_NULL,   NULL,              "",              "  terminate options" },
202    { OP_NODATA, -1,  NULL,              "help",          "display this help and exit" },    { OP_NODATA,    N_HELP,   NULL,              "help",          "display this help and exit" },
203    { 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" },
204    { 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" },
205    { 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" },
206    { 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" },
207    { 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" },
208    { 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" },
209    { OP_NODATA, 'i', NULL,              "ignore-case",   "ignore case distinctions" },    { OP_STRING,    'D',      &DEE_option,       "devices=action","how to handle devices, FIFOs, and sockets" },
210    { OP_NODATA, 'l', NULL,              "files-with-matches", "print only FILE names containing matches" },    { OP_STRING,    'd',      &dee_option,       "directories=action", "how to handle directories" },
211    { 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)" },
212    { 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" },
213    { OP_NODATA, 'M', NULL,              "multiline",     "run in multiline mode" },    { OP_STRING,    'f',      &pattern_filename, "file=path",     "read patterns from file" },
214    { OP_NODATA, 'n', NULL,              "line-number",   "print line number with output lines" },    { OP_NODATA,    N_FOFFSETS, NULL,            "file-offsets",  "output file offsets, not text" },
215    { OP_NODATA, 'q', NULL,              "quiet",         "suppress output, just set return code" },    { OP_NODATA,    'H',      NULL,              "with-filename", "force the prefixing filename on output" },
216    { OP_NODATA, 'r', NULL,              "recursive",     "recursively scan sub-directories" },    { OP_NODATA,    'h',      NULL,              "no-filename",   "suppress the prefixing filename on output" },
217    { OP_STRING, -1,  &exclude_pattern,  "exclude=pattern","exclude matching files when recursing" },    { OP_NODATA,    'i',      NULL,              "ignore-case",   "ignore case distinctions" },
218    { OP_STRING, -1,  &include_pattern,  "include=pattern","include matching files when recursing" },    { OP_NODATA,    'l',      NULL,              "files-with-matches", "print only FILE names containing matches" },
219    { OP_NODATA, 's', NULL,              "no-messages",   "suppress error messages" },    { OP_NODATA,    'L',      NULL,              "files-without-match","print only FILE names not containing matches" },
220    { OP_NODATA, 'u', NULL,              "utf-8",         "use UTF-8 mode" },    { OP_STRING,    N_LABEL,  &stdin_name,       "label=name",    "set name for standard input" },
221    { OP_NODATA, 'V', NULL,              "version",       "print version information and exit" },    { OP_NODATA,    N_LOFFSETS, NULL,            "line-offsets",  "output line numbers and offsets, not text" },
222    { OP_NODATA, 'v', NULL,              "invert-match",  "select non-matching lines" },    { OP_STRING,    N_LOCALE, &locale,           "locale=locale", "use the named locale" },
223    { OP_NODATA, 'w', NULL,              "word-regex(p)", "force PATTERN to match only as a word"  },    { OP_NODATA,    'M',      NULL,              "multiline",     "run in multiline mode" },
224    { OP_NODATA, 'x', NULL,              "line-regex(p)", "force PATTERN to match only whole lines" },    { OP_STRING,    'N',      &newline,          "newline=type",  "set newline type (CR, LF, CRLF, ANYCRLF or ANY)" },
225    { OP_NODATA, 0,   NULL,               NULL,            NULL }    { OP_NODATA,    'n',      NULL,              "line-number",   "print line number with output lines" },
226      { OP_NODATA,    'o',      NULL,              "only-matching", "show only the part of the line that matched" },
227      { OP_NODATA,    'q',      NULL,              "quiet",         "suppress output, just set return code" },
228      { OP_NODATA,    'r',      NULL,              "recursive",     "recursively scan sub-directories" },
229      { OP_STRING,    N_EXCLUDE,&exclude_pattern,  "exclude=pattern","exclude matching files when recursing" },
230      { OP_STRING,    N_INCLUDE,&include_pattern,  "include=pattern","include matching files when recursing" },
231      { OP_STRING,    N_EXCLUDE_DIR,&exclude_dir_pattern, "exclude_dir=pattern","exclude matching directories when recursing" },
232      { OP_STRING,    N_INCLUDE_DIR,&include_dir_pattern, "include_dir=pattern","include matching directories when recursing" },
233    #ifdef JFRIEDL_DEBUG
234      { OP_OP_NUMBER, 'S',      &S_arg,            "jeffS",         "replace matched (sub)string with X" },
235    #endif
236      { OP_NODATA,    's',      NULL,              "no-messages",   "suppress error messages" },
237      { OP_NODATA,    'u',      NULL,              "utf-8",         "use UTF-8 mode" },
238      { OP_NODATA,    'V',      NULL,              "version",       "print version information and exit" },
239      { OP_NODATA,    'v',      NULL,              "invert-match",  "select non-matching lines" },
240      { OP_NODATA,    'w',      NULL,              "word-regex(p)", "force patterns to match only as words"  },
241      { OP_NODATA,    'x',      NULL,              "line-regex(p)", "force patterns to match only whole lines" },
242      { OP_NODATA,    0,        NULL,               NULL,            NULL }
243  };  };
244    
245    /* Tables for prefixing and suffixing patterns, according to the -w, -x, and -F
246    options. These set the 1, 2, and 4 bits in process_options, respectively. Note
247    that the combination of -w and -x has the same effect as -x on its own, so we
248    can treat them as the same. */
249    
250    static const char *prefix[] = {
251      "", "\\b", "^(?:", "^(?:", "\\Q", "\\b\\Q", "^(?:\\Q", "^(?:\\Q" };
252    
253    static const char *suffix[] = {
254      "", "\\b", ")$",   ")$",   "\\E", "\\E\\b", "\\E)$",   "\\E)$" };
255    
256    /* UTF-8 tables - used only when the newline setting is "any". */
257    
258    const int utf8_table3[] = { 0xff, 0x1f, 0x0f, 0x07, 0x03, 0x01};
259    
260    const char utf8_table4[] = {
261      1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
262      1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
263      2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,
264      3,3,3,3,3,3,3,3,4,4,4,4,5,5,5,5 };
265    
266    
267    
268  /*************************************************  /*************************************************
269  *       Functions for directory scanning         *  *            OS-specific functions               *
270  *************************************************/  *************************************************/
271    
272  /* These functions are defined so that they can be made system specific,  /* These functions are defined so that they can be made system specific,
273  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". */  
274    
275    
276  /************* Directory scanning in Unix ***********/  /************* Directory scanning in Unix ***********/
277    
278  #if IS_UNIX  #if defined HAVE_SYS_STAT_H && defined HAVE_DIRENT_H && defined HAVE_SYS_TYPES_H
279  #include <sys/types.h>  #include <sys/types.h>
280  #include <sys/stat.h>  #include <sys/stat.h>
281  #include <dirent.h>  #include <dirent.h>
# Line 184  for (;;) Line 307  for (;;)
307    if (strcmp(dent->d_name, ".") != 0 && strcmp(dent->d_name, "..") != 0)    if (strcmp(dent->d_name, ".") != 0 && strcmp(dent->d_name, "..") != 0)
308      return dent->d_name;      return dent->d_name;
309    }    }
310  return NULL;   /* Keep compiler happy; never executed */  /* Control never reaches here */
311  }  }
312    
313  static void  static void
# Line 194  closedir(dir); Line 317  closedir(dir);
317  }  }
318    
319    
320    /************* Test for regular file in Unix **********/
321    
322    static int
323    isregfile(char *filename)
324    {
325    struct stat statbuf;
326    if (stat(filename, &statbuf) < 0)
327      return 1;        /* In the expectation that opening as a file will fail */
328    return (statbuf.st_mode & S_IFMT) == S_IFREG;
329    }
330    
331    
332    /************* Test stdout for being a terminal in Unix **********/
333    
334    static BOOL
335    is_stdout_tty(void)
336    {
337    return isatty(fileno(stdout));
338    }
339    
340    
341  /************* Directory scanning in Win32 ***********/  /************* Directory scanning in Win32 ***********/
342    
343  /* 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
344  Lionel Fourquaux. David Burgess added a patch to define INVALID_FILE_ATTRIBUTES  Lionel Fourquaux. David Burgess added a patch to define INVALID_FILE_ATTRIBUTES
345  when it did not exist. */  when it did not exist. David Byron added a patch that moved the #include of
346    <windows.h> to before the INVALID_FILE_ATTRIBUTES definition rather than after.
347    */
348    
349  #elif HAVE_WIN32API  #elif HAVE_WINDOWS_H
350    
351  #ifndef STRICT  #ifndef STRICT
352  # define STRICT  # define STRICT
# Line 209  when it did not exist. */ Line 354  when it did not exist. */
354  #ifndef WIN32_LEAN_AND_MEAN  #ifndef WIN32_LEAN_AND_MEAN
355  # define WIN32_LEAN_AND_MEAN  # define WIN32_LEAN_AND_MEAN
356  #endif  #endif
357    
358    #include <windows.h>
359    
360  #ifndef INVALID_FILE_ATTRIBUTES  #ifndef INVALID_FILE_ATTRIBUTES
361  #define INVALID_FILE_ATTRIBUTES 0xFFFFFFFF  #define INVALID_FILE_ATTRIBUTES 0xFFFFFFFF
362  #endif  #endif
363    
 #include <windows.h>  
   
364  typedef struct directory_type  typedef struct directory_type
365  {  {
366  HANDLE handle;  HANDLE handle;
# Line 292  free(dir); Line 438  free(dir);
438  }  }
439    
440    
441    /************* Test for regular file in Win32 **********/
442    
443    /* I don't know how to do this, or if it can be done; assume all paths are
444    regular if they are not directories. */
445    
446    int isregfile(char *filename)
447    {
448    return !isdirectory(filename);
449    }
450    
451    
452    /************* Test stdout for being a terminal in Win32 **********/
453    
454    /* I don't know how to do this; assume never */
455    
456    static BOOL
457    is_stdout_tty(void)
458    {
459    return FALSE;
460    }
461    
462    
463  /************* Directory scanning when we can't do it ***********/  /************* Directory scanning when we can't do it ***********/
464    
465  /* 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 468  free(dir);
468    
469  typedef void directory_type;  typedef void directory_type;
470    
471  int isdirectory(char *filename) { return FALSE; }  int isdirectory(char *filename) { return 0; }
472  directory_type * opendirectory(char *filename) {}  directory_type * opendirectory(char *filename) { return (directory_type*)0;}
473  char *readdirectory(directory_type *dir) {}  char *readdirectory(directory_type *dir) { return (char*)0;}
474  void closedirectory(directory_type *dir) {}  void closedirectory(directory_type *dir) {}
475    
476    
477    /************* Test for regular when we can't do it **********/
478    
479    /* Assume all files are regular. */
480    
481    int isregfile(char *filename) { return 1; }
482    
483    
484    /************* Test stdout for being a terminal when we can't do it **********/
485    
486    static BOOL
487    is_stdout_tty(void)
488    {
489    return FALSE;
490    }
491    
492    
493  #endif  #endif
494    
495    
496    
497  #if ! HAVE_STRERROR  #ifndef HAVE_STRERROR
498  /*************************************************  /*************************************************
499  *     Provide strerror() for non-ANSI libraries  *  *     Provide strerror() for non-ANSI libraries  *
500  *************************************************/  *************************************************/
# Line 332  return sys_errlist[n]; Line 517  return sys_errlist[n];
517    
518    
519  /*************************************************  /*************************************************
520    *             Find end of line                   *
521    *************************************************/
522    
523    /* The length of the endline sequence that is found is set via lenptr. This may
524    be zero at the very end of the file if there is no line-ending sequence there.
525    
526    Arguments:
527      p         current position in line
528      endptr    end of available data
529      lenptr    where to put the length of the eol sequence
530    
531    Returns:    pointer to the last byte of the line
532    */
533    
534    static char *
535    end_of_line(char *p, char *endptr, int *lenptr)
536    {
537    switch(endlinetype)
538      {
539      default:      /* Just in case */
540      case EL_LF:
541      while (p < endptr && *p != '\n') p++;
542      if (p < endptr)
543        {
544        *lenptr = 1;
545        return p + 1;
546        }
547      *lenptr = 0;
548      return endptr;
549    
550      case EL_CR:
551      while (p < endptr && *p != '\r') p++;
552      if (p < endptr)
553        {
554        *lenptr = 1;
555        return p + 1;
556        }
557      *lenptr = 0;
558      return endptr;
559    
560      case EL_CRLF:
561      for (;;)
562        {
563        while (p < endptr && *p != '\r') p++;
564        if (++p >= endptr)
565          {
566          *lenptr = 0;
567          return endptr;
568          }
569        if (*p == '\n')
570          {
571          *lenptr = 2;
572          return p + 1;
573          }
574        }
575      break;
576    
577      case EL_ANYCRLF:
578      while (p < endptr)
579        {
580        int extra = 0;
581        register int c = *((unsigned char *)p);
582    
583        if (utf8 && c >= 0xc0)
584          {
585          int gcii, gcss;
586          extra = utf8_table4[c & 0x3f];  /* Number of additional bytes */
587          gcss = 6*extra;
588          c = (c & utf8_table3[extra]) << gcss;
589          for (gcii = 1; gcii <= extra; gcii++)
590            {
591            gcss -= 6;
592            c |= (p[gcii] & 0x3f) << gcss;
593            }
594          }
595    
596        p += 1 + extra;
597    
598        switch (c)
599          {
600          case 0x0a:    /* LF */
601          *lenptr = 1;
602          return p;
603    
604          case 0x0d:    /* CR */
605          if (p < endptr && *p == 0x0a)
606            {
607            *lenptr = 2;
608            p++;
609            }
610          else *lenptr = 1;
611          return p;
612    
613          default:
614          break;
615          }
616        }   /* End of loop for ANYCRLF case */
617    
618      *lenptr = 0;  /* Must have hit the end */
619      return endptr;
620    
621      case EL_ANY:
622      while (p < endptr)
623        {
624        int extra = 0;
625        register int c = *((unsigned char *)p);
626    
627        if (utf8 && c >= 0xc0)
628          {
629          int gcii, gcss;
630          extra = utf8_table4[c & 0x3f];  /* Number of additional bytes */
631          gcss = 6*extra;
632          c = (c & utf8_table3[extra]) << gcss;
633          for (gcii = 1; gcii <= extra; gcii++)
634            {
635            gcss -= 6;
636            c |= (p[gcii] & 0x3f) << gcss;
637            }
638          }
639    
640        p += 1 + extra;
641    
642        switch (c)
643          {
644          case 0x0a:    /* LF */
645          case 0x0b:    /* VT */
646          case 0x0c:    /* FF */
647          *lenptr = 1;
648          return p;
649    
650          case 0x0d:    /* CR */
651          if (p < endptr && *p == 0x0a)
652            {
653            *lenptr = 2;
654            p++;
655            }
656          else *lenptr = 1;
657          return p;
658    
659          case 0x85:    /* NEL */
660          *lenptr = utf8? 2 : 1;
661          return p;
662    
663          case 0x2028:  /* LS */
664          case 0x2029:  /* PS */
665          *lenptr = 3;
666          return p;
667    
668          default:
669          break;
670          }
671        }   /* End of loop for ANY case */
672    
673      *lenptr = 0;  /* Must have hit the end */
674      return endptr;
675      }     /* End of overall switch */
676    }
677    
678    
679    
680    /*************************************************
681    *         Find start of previous line            *
682    *************************************************/
683    
684    /* This is called when looking back for before lines to print.
685    
686    Arguments:
687      p         start of the subsequent line
688      startptr  start of available data
689    
690    Returns:    pointer to the start of the previous line
691    */
692    
693    static char *
694    previous_line(char *p, char *startptr)
695    {
696    switch(endlinetype)
697      {
698      default:      /* Just in case */
699      case EL_LF:
700      p--;
701      while (p > startptr && p[-1] != '\n') p--;
702      return p;
703    
704      case EL_CR:
705      p--;
706      while (p > startptr && p[-1] != '\n') p--;
707      return p;
708    
709      case EL_CRLF:
710      for (;;)
711        {
712        p -= 2;
713        while (p > startptr && p[-1] != '\n') p--;
714        if (p <= startptr + 1 || p[-2] == '\r') return p;
715        }
716      return p;   /* But control should never get here */
717    
718      case EL_ANY:
719      case EL_ANYCRLF:
720      if (*(--p) == '\n' && p > startptr && p[-1] == '\r') p--;
721      if (utf8) while ((*p & 0xc0) == 0x80) p--;
722    
723      while (p > startptr)
724        {
725        register int c;
726        char *pp = p - 1;
727    
728        if (utf8)
729          {
730          int extra = 0;
731          while ((*pp & 0xc0) == 0x80) pp--;
732          c = *((unsigned char *)pp);
733          if (c >= 0xc0)
734            {
735            int gcii, gcss;
736            extra = utf8_table4[c & 0x3f];  /* Number of additional bytes */
737            gcss = 6*extra;
738            c = (c & utf8_table3[extra]) << gcss;
739            for (gcii = 1; gcii <= extra; gcii++)
740              {
741              gcss -= 6;
742              c |= (pp[gcii] & 0x3f) << gcss;
743              }
744            }
745          }
746        else c = *((unsigned char *)pp);
747    
748        if (endlinetype == EL_ANYCRLF) switch (c)
749          {
750          case 0x0a:    /* LF */
751          case 0x0d:    /* CR */
752          return p;
753    
754          default:
755          break;
756          }
757    
758        else switch (c)
759          {
760          case 0x0a:    /* LF */
761          case 0x0b:    /* VT */
762          case 0x0c:    /* FF */
763          case 0x0d:    /* CR */
764          case 0x85:    /* NEL */
765          case 0x2028:  /* LS */
766          case 0x2029:  /* PS */
767          return p;
768    
769          default:
770          break;
771          }
772    
773        p = pp;  /* Back one character */
774        }        /* End of loop for ANY case */
775    
776      return startptr;  /* Hit start of data */
777      }     /* End of overall switch */
778    }
779    
780    
781    
782    
783    
784    /*************************************************
785  *       Print the previous "after" lines         *  *       Print the previous "after" lines         *
786  *************************************************/  *************************************************/
787    
788  /* 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,
789  and at the end of the file.  and at the end of the file. The data in the line is written using fwrite() so
790    that a binary zero does not terminate it.
791    
792  Arguments:  Arguments:
793    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 806  if (after_context > 0 && lastmatchnumber
806    int count = 0;    int count = 0;
807    while (lastmatchrestart < endptr && count++ < after_context)    while (lastmatchrestart < endptr && count++ < after_context)
808      {      {
809        int ellength;
810      char *pp = lastmatchrestart;      char *pp = lastmatchrestart;
811      if (printname != NULL) fprintf(stdout, "%s-", printname);      if (printname != NULL) fprintf(stdout, "%s-", printname);
812      if (number) fprintf(stdout, "%d-", lastmatchnumber++);      if (number) fprintf(stdout, "%d-", lastmatchnumber++);
813      while (*pp != '\n') pp++;      pp = end_of_line(pp, endptr, &ellength);
814      fprintf(stdout, "%.*s", pp - lastmatchrestart + 1, lastmatchrestart);      fwrite(lastmatchrestart, 1, pp - lastmatchrestart, stdout);
815      lastmatchrestart = pp + 1;      lastmatchrestart = pp;
816      }      }
817    hyphenpending = TRUE;    hyphenpending = TRUE;
818    }    }
# Line 380  be in the middle third most of the time, Line 832  be in the middle third most of the time,
832  "before" context printing.  "before" context printing.
833    
834  Arguments:  Arguments:
835    in           the fopened FILE stream    handle       the fopened FILE stream for a normal file
836                   the gzFile pointer when reading is via libz
837                   the BZFILE pointer when reading is via libbz2
838      frtype       FR_PLAIN, FR_LIBZ, or FR_LIBBZ2
839    printname    the file name if it is to be printed for each match    printname    the file name if it is to be printed for each match
840                 or NULL if the file name is not to be printed                 or NULL if the file name is not to be printed
841                 it cannot be NULL if filenames[_nomatch]_only is set                 it cannot be NULL if filenames[_nomatch]_only is set
842    
843  Returns:       0 if there was at least one match  Returns:       0 if there was at least one match
844                 1 otherwise (no matches)                 1 otherwise (no matches)
845                   2 if there is a read error on a .bz2 file
846  */  */
847    
848  static int  static int
849  pcregrep(FILE *in, char *printname)  pcregrep(void *handle, int frtype, char *printname)
850  {  {
851  int rc = 1;  int rc = 1;
852  int linenumber = 1;  int linenumber = 1;
853  int lastmatchnumber = 0;  int lastmatchnumber = 0;
854  int count = 0;  int count = 0;
855    int filepos = 0;
856  int offsets[99];  int offsets[99];
857  char *lastmatchrestart = NULL;  char *lastmatchrestart = NULL;
858  char buffer[3*MBUFTHIRD];  char buffer[3*MBUFTHIRD];
# Line 403  char *ptr = buffer; Line 860  char *ptr = buffer;
860  char *endptr;  char *endptr;
861  size_t bufflength;  size_t bufflength;
862  BOOL endhyphenpending = FALSE;  BOOL endhyphenpending = FALSE;
863    FILE *in = NULL;                    /* Ensure initialized */
864    
865  /* Do the first read into the start of the buffer and set up the pointer to  #ifdef SUPPORT_LIBZ
866  end of what we have. */  gzFile ingz = NULL;
867    #endif
868    
869    #ifdef SUPPORT_LIBBZ2
870    BZFILE *inbz2 = NULL;
871    #endif
872    
873    
874    /* Do the first read into the start of the buffer and set up the pointer to end
875    of what we have. In the case of libz, a non-zipped .gz file will be read as a
876    plain file. However, if a .bz2 file isn't actually bzipped, the first read will
877    fail. */
878    
879    #ifdef SUPPORT_LIBZ
880    if (frtype == FR_LIBZ)
881      {
882      ingz = (gzFile)handle;
883      bufflength = gzread (ingz, buffer, 3*MBUFTHIRD);
884      }
885    else
886    #endif
887    
888    #ifdef SUPPORT_LIBBZ2
889    if (frtype == FR_LIBBZ2)
890      {
891      inbz2 = (BZFILE *)handle;
892      bufflength = BZ2_bzread(inbz2, buffer, 3*MBUFTHIRD);
893      if ((int)bufflength < 0) return 2;   /* Gotcha: bufflength is size_t; */
894      }                                    /* without the cast it is unsigned. */
895    else
896    #endif
897    
898      {
899      in = (FILE *)handle;
900      bufflength = fread(buffer, 1, 3*MBUFTHIRD, in);
901      }
902    
 bufflength = fread(buffer, 1, 3*MBUFTHIRD, in);  
903  endptr = buffer + bufflength;  endptr = buffer + bufflength;
904    
905  /* Loop while the current pointer is not at the end of the file. For large  /* Loop while the current pointer is not at the end of the file. For large
# Line 417  way, the buffer is shifted left and re-f Line 909  way, the buffer is shifted left and re-f
909    
910  while (ptr < endptr)  while (ptr < endptr)
911    {    {
912    int i;    int i, endlinelength;
913      int mrc = 0;
914    BOOL match = FALSE;    BOOL match = FALSE;
915      char *matchptr = ptr;
916    char *t = ptr;    char *t = ptr;
917    size_t length, linelength;    size_t length, linelength;
918    
# Line 429  while (ptr < endptr) Line 923  while (ptr < endptr)
923    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
924    that any match is constrained to be in the first line. */    that any match is constrained to be in the first line. */
925    
926    linelength = 0;    t = end_of_line(t, endptr, &endlinelength);
927    while (t < endptr && *t++ != '\n') linelength++;    linelength = t - ptr - endlinelength;
928    length = multiline? endptr - ptr : linelength;    length = multiline? (size_t)(endptr - ptr) : linelength;
929    
930      /* Extra processing for Jeffrey Friedl's debugging. */
931    
932    #ifdef JFRIEDL_DEBUG
933      if (jfriedl_XT || jfriedl_XR)
934      {
935          #include <sys/time.h>
936          #include <time.h>
937          struct timeval start_time, end_time;
938          struct timezone dummy;
939    
940          if (jfriedl_XT)
941          {
942              unsigned long newlen = length * jfriedl_XT + strlen(jfriedl_prefix) + strlen(jfriedl_postfix);
943              const char *orig = ptr;
944              ptr = malloc(newlen + 1);
945              if (!ptr) {
946                      printf("out of memory");
947                      exit(2);
948              }
949              endptr = ptr;
950              strcpy(endptr, jfriedl_prefix); endptr += strlen(jfriedl_prefix);
951              for (i = 0; i < jfriedl_XT; i++) {
952                      strncpy(endptr, orig,  length);
953                      endptr += length;
954              }
955              strcpy(endptr, jfriedl_postfix); endptr += strlen(jfriedl_postfix);
956              length = newlen;
957          }
958    
959          if (gettimeofday(&start_time, &dummy) != 0)
960                  perror("bad gettimeofday");
961    
962    
963          for (i = 0; i < jfriedl_XR; i++)
964              match = (pcre_exec(pattern_list[0], hints_list[0], ptr, length, 0, 0, offsets, 99) >= 0);
965    
966          if (gettimeofday(&end_time, &dummy) != 0)
967                  perror("bad gettimeofday");
968    
969          double delta = ((end_time.tv_sec + (end_time.tv_usec / 1000000.0))
970                          -
971                          (start_time.tv_sec + (start_time.tv_usec / 1000000.0)));
972    
973          printf("%s TIMER[%.4f]\n", match ? "MATCH" : "FAIL", delta);
974          return 0;
975      }
976    #endif
977    
978      /* We come back here after a match when the -o option (only_matching) is set,
979      in order to find any further matches in the same line. */
980    
981      ONLY_MATCHING_RESTART:
982    
983    /* 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
984    the final newline in the subject string. */    the final newline in the subject string. */
985    
986    for (i = 0; !match && i < pattern_count; i++)    for (i = 0; i < pattern_count; i++)
987      {      {
988      match = pcre_exec(pattern_list[i], hints_list[i], ptr, length, 0, 0,      mrc = pcre_exec(pattern_list[i], hints_list[i], matchptr, length, 0, 0,
989        offsets, 99) >= 0;        offsets, 99);
990        if (mrc >= 0) { match = TRUE; break; }
991        if (mrc != PCRE_ERROR_NOMATCH)
992          {
993          fprintf(stderr, "pcregrep: pcre_exec() error %d while matching ", mrc);
994          if (pattern_count > 1) fprintf(stderr, "pattern number %d to ", i+1);
995          fprintf(stderr, "this line:\n");
996          fwrite(matchptr, 1, linelength, stderr);  /* In case binary zero included */
997          fprintf(stderr, "\n");
998          if (error_count == 0 &&
999              (mrc == PCRE_ERROR_MATCHLIMIT || mrc == PCRE_ERROR_RECURSIONLIMIT))
1000            {
1001            fprintf(stderr, "pcregrep: error %d means that a resource limit "
1002              "was exceeded\n", mrc);
1003            fprintf(stderr, "pcregrep: check your regex for nested unlimited loops\n");
1004            }
1005          if (error_count++ > 20)
1006            {
1007            fprintf(stderr, "pcregrep: too many errors - abandoned\n");
1008            exit(2);
1009            }
1010          match = invert;    /* No more matching; don't show the line again */
1011          break;
1012          }
1013      }      }
1014    
1015    /* 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. */
1016    
1017    if (match != invert)    if (match != invert)
1018      {      {
1019      BOOL hyphenprinted = FALSE;      BOOL hyphenprinted = FALSE;
1020    
1021      if (filenames_nomatch_only) return 1;      /* We've failed if we want a file that doesn't have any matches. */
1022    
1023        if (filenames == FN_NOMATCH_ONLY) return 1;
1024    
1025        /* Just count if just counting is wanted. */
1026    
1027      if (count_only) count++;      if (count_only) count++;
1028    
1029      else if (filenames_only)      /* If all we want is a file name, there is no need to scan any more lines
1030        in the file. */
1031    
1032        else if (filenames == FN_ONLY)
1033        {        {
1034        fprintf(stdout, "%s\n", printname);        fprintf(stdout, "%s\n", printname);
1035        return 0;        return 0;
1036        }        }
1037    
1038        /* Likewise, if all we want is a yes/no answer. */
1039    
1040      else if (quiet) return 0;      else if (quiet) return 0;
1041    
1042        /* The --only-matching option prints just the substring that matched, and
1043        the --file-offsets and --line-offsets options output offsets for the
1044        matching substring (they both force --only-matching). None of these options
1045        prints any context. Afterwards, adjust the start and length, and then jump
1046        back to look for further matches in the same line. If we are in invert
1047        mode, however, nothing is printed - this could be still useful because the
1048        return code is set. */
1049    
1050        else if (only_matching)
1051          {
1052          if (!invert)
1053            {
1054            if (printname != NULL) fprintf(stdout, "%s:", printname);
1055            if (number) fprintf(stdout, "%d:", linenumber);
1056            if (line_offsets)
1057              fprintf(stdout, "%d,%d", (int)(matchptr + offsets[0] - ptr),
1058                offsets[1] - offsets[0]);
1059            else if (file_offsets)
1060              fprintf(stdout, "%d,%d", (int)(filepos + matchptr + offsets[0] - ptr),
1061                offsets[1] - offsets[0]);
1062            else
1063              {
1064              if (do_colour) fprintf(stdout, "%c[%sm", 0x1b, colour_string);
1065              fwrite(matchptr + offsets[0], 1, offsets[1] - offsets[0], stdout);
1066              if (do_colour) fprintf(stdout, "%c[00m", 0x1b);
1067              }
1068            fprintf(stdout, "\n");
1069            matchptr += offsets[1];
1070            length -= offsets[1];
1071            match = FALSE;
1072            goto ONLY_MATCHING_RESTART;
1073            }
1074          }
1075    
1076        /* This is the default case when none of the above options is set. We print
1077        the matching lines(s), possibly preceded and/or followed by other lines of
1078        context. */
1079    
1080      else      else
1081        {        {
1082        /* 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 1084  while (ptr < endptr)
1084    
1085        if (after_context > 0 && lastmatchnumber > 0)        if (after_context > 0 && lastmatchnumber > 0)
1086          {          {
1087            int ellength;
1088          int linecount = 0;          int linecount = 0;
1089          char *p = lastmatchrestart;          char *p = lastmatchrestart;
1090    
1091          while (p < ptr && linecount < after_context)          while (p < ptr && linecount < after_context)
1092            {            {
1093            while (*p != '\n') p++;            p = end_of_line(p, ptr, &ellength);
           p++;  
1094            linecount++;            linecount++;
1095            }            }
1096    
1097          /* It is important to advance lastmatchrestart during this printing so          /* It is important to advance lastmatchrestart during this printing so
1098          that it interacts correctly with any "before" printing below. */          that it interacts correctly with any "before" printing below. Print
1099            each line's data using fwrite() in case there are binary zeroes. */
1100    
1101          while (lastmatchrestart < p)          while (lastmatchrestart < p)
1102            {            {
1103            char *pp = lastmatchrestart;            char *pp = lastmatchrestart;
1104            if (printname != NULL) fprintf(stdout, "%s-", printname);            if (printname != NULL) fprintf(stdout, "%s-", printname);
1105            if (number) fprintf(stdout, "%d-", lastmatchnumber++);            if (number) fprintf(stdout, "%d-", lastmatchnumber++);
1106            while (*pp != '\n') pp++;            pp = end_of_line(pp, endptr, &ellength);
1107            fprintf(stdout, "%.*s", pp - lastmatchrestart + 1, lastmatchrestart);            fwrite(lastmatchrestart, 1, pp - lastmatchrestart, stdout);
1108            lastmatchrestart = pp + 1;            lastmatchrestart = pp;
1109            }            }
1110          if (lastmatchrestart != ptr) hyphenpending = TRUE;          if (lastmatchrestart != ptr) hyphenpending = TRUE;
1111          }          }
# Line 510  while (ptr < endptr) Line 1128  while (ptr < endptr)
1128          char *p = ptr;          char *p = ptr;
1129    
1130          while (p > buffer && (lastmatchnumber == 0 || p > lastmatchrestart) &&          while (p > buffer && (lastmatchnumber == 0 || p > lastmatchrestart) &&
1131                 linecount++ < before_context)                 linecount < before_context)
1132            {            {
1133            p--;            linecount++;
1134            while (p > buffer && p[-1] != '\n') p--;            p = previous_line(p, buffer);
1135            }            }
1136    
1137          if (lastmatchnumber > 0 && p > lastmatchrestart && !hyphenprinted)          if (lastmatchnumber > 0 && p > lastmatchrestart && !hyphenprinted)
# Line 521  while (ptr < endptr) Line 1139  while (ptr < endptr)
1139    
1140          while (p < ptr)          while (p < ptr)
1141            {            {
1142              int ellength;
1143            char *pp = p;            char *pp = p;
1144            if (printname != NULL) fprintf(stdout, "%s-", printname);            if (printname != NULL) fprintf(stdout, "%s-", printname);
1145            if (number) fprintf(stdout, "%d-", linenumber - linecount--);            if (number) fprintf(stdout, "%d-", linenumber - linecount--);
1146            while (*pp != '\n') pp++;            pp = end_of_line(pp, endptr, &ellength);
1147            fprintf(stdout, "%.*s", pp - p + 1, p);            fwrite(p, 1, pp - p, stdout);
1148            p = pp + 1;            p = pp;
1149            }            }
1150          }          }
1151    
1152        /* 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
1153        of the file. */        of the file if any context lines are being output. */
1154    
1155          if (after_context > 0 || before_context > 0)
1156            endhyphenpending = TRUE;
1157    
       endhyphenpending = TRUE;  
1158        if (printname != NULL) fprintf(stdout, "%s:", printname);        if (printname != NULL) fprintf(stdout, "%s:", printname);
1159        if (number) fprintf(stdout, "%d:", linenumber);        if (number) fprintf(stdout, "%d:", linenumber);
1160    
1161        /* 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
1162        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
1163        line number appropriately. Because the PCRE_FIRSTLINE option is set, the        line number appropriately, but only when there actually was a match
1164        start of the match will always be before the first \n character. */        (invert not set). Because the PCRE_FIRSTLINE option is set, the start of
1165          the match will always be before the first newline sequence. */
1166    
1167        if (multiline)        if (multiline)
1168          {          {
1169          char *endmatch = ptr + offsets[1];          int ellength;
1170          t = ptr;          char *endmatch = ptr;
1171          while (t < endmatch) { if (*t++ == '\n') linenumber++; }          if (!invert)
1172          while (endmatch < endptr && *endmatch != '\n') endmatch++;            {
1173          linelength = endmatch - ptr;            endmatch += offsets[1];
1174              t = ptr;
1175              while (t < endmatch)
1176                {
1177                t = end_of_line(t, endptr, &ellength);
1178                if (t <= endmatch) linenumber++; else break;
1179                }
1180              }
1181            endmatch = end_of_line(endmatch, endptr, &ellength);
1182            linelength = endmatch - ptr - ellength;
1183            }
1184    
1185          /*** NOTE: Use only fwrite() to output the data line, so that binary
1186          zeroes are treated as just another data character. */
1187    
1188          /* This extra option, for Jeffrey Friedl's debugging requirements,
1189          replaces the matched string, or a specific captured string if it exists,
1190          with X. When this happens, colouring is ignored. */
1191    
1192    #ifdef JFRIEDL_DEBUG
1193          if (S_arg >= 0 && S_arg < mrc)
1194            {
1195            int first = S_arg * 2;
1196            int last  = first + 1;
1197            fwrite(ptr, 1, offsets[first], stdout);
1198            fprintf(stdout, "X");
1199            fwrite(ptr + offsets[last], 1, linelength - offsets[last], stdout);
1200          }          }
1201          else
1202    #endif
1203    
1204          /* We have to split the line(s) up if colouring. */
1205    
1206        fprintf(stdout, "%.*s\n", linelength, ptr);        if (do_colour)
1207            {
1208            fwrite(ptr, 1, offsets[0], stdout);
1209            fprintf(stdout, "%c[%sm", 0x1b, colour_string);
1210            fwrite(ptr + offsets[0], 1, offsets[1] - offsets[0], stdout);
1211            fprintf(stdout, "%c[00m", 0x1b);
1212            fwrite(ptr + offsets[1], 1, (linelength + endlinelength) - offsets[1],
1213              stdout);
1214            }
1215          else fwrite(ptr, 1, linelength + endlinelength, stdout);
1216        }        }
1217    
1218        /* End of doing what has to be done for a match */
1219    
1220      rc = 0;    /* Had some success */      rc = 0;    /* Had some success */
1221    
1222      /* Remember where the last match happened for after_context. We remember      /* Remember where the last match happened for after_context. We remember
1223      where we are about to restart, and that line's number. */      where we are about to restart, and that line's number. */
1224    
1225      lastmatchrestart = ptr + linelength + 1;      lastmatchrestart = ptr + linelength + endlinelength;
1226      lastmatchnumber = linenumber + 1;      lastmatchnumber = linenumber + 1;
1227      }      }
1228    
1229    /* Advance to after the newline and increment the line number. */    /* For a match in multiline inverted mode (which of course did not cause
1230      anything to be printed), we have to move on to the end of the match before
1231      proceeding. */
1232    
1233      if (multiline && invert && match)
1234        {
1235        int ellength;
1236        char *endmatch = ptr + offsets[1];
1237        t = ptr;
1238        while (t < endmatch)
1239          {
1240          t = end_of_line(t, endptr, &ellength);
1241          if (t <= endmatch) linenumber++; else break;
1242          }
1243        endmatch = end_of_line(endmatch, endptr, &ellength);
1244        linelength = endmatch - ptr - ellength;
1245        }
1246    
1247      /* Advance to after the newline and increment the line number. The file
1248      offset to the current line is maintained in filepos. */
1249    
1250    ptr += linelength + 1;    ptr += linelength + endlinelength;
1251      filepos += linelength + endlinelength;
1252    linenumber++;    linenumber++;
1253    
1254    /* 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 587  while (ptr < endptr) Line 1270  while (ptr < endptr)
1270    
1271      memmove(buffer, buffer + MBUFTHIRD, 2*MBUFTHIRD);      memmove(buffer, buffer + MBUFTHIRD, 2*MBUFTHIRD);
1272      ptr -= MBUFTHIRD;      ptr -= MBUFTHIRD;
     bufflength = 2*MBUFTHIRD + fread(buffer + 2*MBUFTHIRD, 1, MBUFTHIRD, in);  
     endptr = buffer + bufflength;  
1273    
1274      /* Adjust any last match point */  #ifdef SUPPORT_LIBZ
1275        if (frtype == FR_LIBZ)
1276          bufflength = 2*MBUFTHIRD +
1277            gzread (ingz, buffer + 2*MBUFTHIRD, MBUFTHIRD);
1278        else
1279    #endif
1280    
1281    #ifdef SUPPORT_LIBBZ2
1282        if (frtype == FR_LIBBZ2)
1283          bufflength = 2*MBUFTHIRD +
1284            BZ2_bzread(inbz2, buffer + 2*MBUFTHIRD, MBUFTHIRD);
1285        else
1286    #endif
1287    
1288        bufflength = 2*MBUFTHIRD + fread(buffer + 2*MBUFTHIRD, 1, MBUFTHIRD, in);
1289    
1290        endptr = buffer + bufflength;
1291    
1292        /* Adjust any last match point */
1293    
1294      if (lastmatchnumber > 0) lastmatchrestart -= MBUFTHIRD;      if (lastmatchnumber > 0) lastmatchrestart -= MBUFTHIRD;
1295      }      }
# Line 599  while (ptr < endptr) Line 1298  while (ptr < endptr)
1298  /* 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
1299  hyphenpending if it prints something. */  hyphenpending if it prints something. */
1300    
1301  do_after_lines(lastmatchnumber, lastmatchrestart, endptr, printname);  if (!only_matching && !count_only)
1302  hyphenpending |= endhyphenpending;    {
1303      do_after_lines(lastmatchnumber, lastmatchrestart, endptr, printname);
1304      hyphenpending |= endhyphenpending;
1305      }
1306    
1307  /* 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
1308  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. */
1309    
1310  if (filenames_nomatch_only)  if (filenames == FN_NOMATCH_ONLY)
1311    {    {
1312    fprintf(stdout, "%s\n", printname);    fprintf(stdout, "%s\n", printname);
1313    return 0;    return 0;
# Line 633  recursing; if it's a file, grep it. Line 1335  recursing; if it's a file, grep it.
1335    
1336  Arguments:  Arguments:
1337    pathname          the path to investigate    pathname          the path to investigate
1338    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  
1339    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
1340    
1341  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 1346  However, file opening failures are suppr
1346  */  */
1347    
1348  static int  static int
1349  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)  
1350  {  {
1351  int rc = 1;  int rc = 1;
1352  int sep;  int sep;
1353  FILE *in;  int frtype;
1354  char *printname;  int pathlen;
1355    void *handle;
1356    FILE *in = NULL;           /* Ensure initialized */
1357    
1358    #ifdef SUPPORT_LIBZ
1359    gzFile ingz = NULL;
1360    #endif
1361    
1362    #ifdef SUPPORT_LIBBZ2
1363    BZFILE *inbz2 = NULL;
1364    #endif
1365    
1366  /* If the file name is "-" we scan stdin */  /* If the file name is "-" we scan stdin */
1367    
1368  if (strcmp(pathname, "-") == 0)  if (strcmp(pathname, "-") == 0)
1369    {    {
1370    return pcregrep(stdin,    return pcregrep(stdin, FR_PLAIN,
1371      (filenames_only || filenames_nomatch_only ||      (filenames > FN_DEFAULT || (filenames == FN_DEFAULT && !only_one_at_top))?
     (show_filenames && !only_one_at_top))?  
1372        stdin_name : NULL);        stdin_name : NULL);
1373    }    }
1374    
1375  /* If the file is a directory and we are recursing, scan each file within it,  /* If the file is a directory, skip if skipping or if we are recursing, scan
1376  subject to any include or exclude patterns that were set. The scanning code is  each file and directory within it, subject to any include or exclude patterns
1377  localized so it can be made system-specific. */  that were set. The scanning code is localized so it can be made
1378    system-specific. */
1379    
1380  if ((sep = isdirectory(pathname)) != 0 && dir_recurse)  if ((sep = isdirectory(pathname)) != 0)
1381    {    {
1382    char buffer[1024];    if (dee_action == dee_SKIP) return 1;
1383    char *nextfile;    if (dee_action == dee_RECURSE)
1384    directory_type *dir = opendirectory(pathname);      {
1385        char buffer[1024];
1386        char *nextfile;
1387        directory_type *dir = opendirectory(pathname);
1388    
1389        if (dir == NULL)
1390          {
1391          if (!silent)
1392            fprintf(stderr, "pcregrep: Failed to open directory %s: %s\n", pathname,
1393              strerror(errno));
1394          return 2;
1395          }
1396    
1397        while ((nextfile = readdirectory(dir)) != NULL)
1398          {
1399          int frc, nflen;
1400          sprintf(buffer, "%.512s%c%.128s", pathname, sep, nextfile);
1401          nflen = strlen(nextfile);
1402    
1403          if (isdirectory(buffer))
1404            {
1405            if (exclude_dir_compiled != NULL &&
1406                pcre_exec(exclude_dir_compiled, NULL, nextfile, nflen, 0, 0, NULL, 0) >= 0)
1407              continue;
1408    
1409            if (include_dir_compiled != NULL &&
1410                pcre_exec(include_dir_compiled, NULL, nextfile, nflen, 0, 0, NULL, 0) < 0)
1411              continue;
1412            }
1413          else
1414            {
1415            if (exclude_compiled != NULL &&
1416                pcre_exec(exclude_compiled, NULL, nextfile, nflen, 0, 0, NULL, 0) >= 0)
1417              continue;
1418    
1419            if (include_compiled != NULL &&
1420                pcre_exec(include_compiled, NULL, nextfile, nflen, 0, 0, NULL, 0) < 0)
1421              continue;
1422            }
1423    
1424          frc = grep_or_recurse(buffer, dir_recurse, FALSE);
1425          if (frc > 1) rc = frc;
1426           else if (frc == 0 && rc == 1) rc = 0;
1427          }
1428    
1429        closedirectory(dir);
1430        return rc;
1431        }
1432      }
1433    
1434    /* If the file is not a directory and not a regular file, skip it if that's
1435    been requested. */
1436    
1437    else if (!isregfile(pathname) && DEE_action == DEE_SKIP) return 1;
1438    
1439    /* Control reaches here if we have a regular file, or if we have a directory
1440    and recursion or skipping was not requested, or if we have anything else and
1441    skipping was not requested. The scan proceeds. If this is the first and only
1442    argument at top level, we don't show the file name, unless we are only showing
1443    the file name, or the filename was forced (-H). */
1444    
1445    pathlen = strlen(pathname);
1446    
1447    /* Open using zlib if it is supported and the file name ends with .gz. */
1448    
1449    if (dir == NULL)  #ifdef SUPPORT_LIBZ
1450    if (pathlen > 3 && strcmp(pathname + pathlen - 3, ".gz") == 0)
1451      {
1452      ingz = gzopen(pathname, "rb");
1453      if (ingz == NULL)
1454      {      {
1455      if (!silent)      if (!silent)
1456        fprintf(stderr, "pcregrep: Failed to open directory %s: %s\n", pathname,        fprintf(stderr, "pcregrep: Failed to open %s: %s\n", pathname,
1457          strerror(errno));          strerror(errno));
1458      return 2;      return 2;
1459      }      }
1460      handle = (void *)ingz;
1461      frtype = FR_LIBZ;
1462      }
1463    else
1464    #endif
1465    
1466    while ((nextfile = readdirectory(dir)) != NULL)  /* Otherwise open with bz2lib if it is supported and the name ends with .bz2. */
     {  
     int frc, blen;  
     sprintf(buffer, "%.512s%c%.128s", pathname, sep, nextfile);  
     blen = strlen(buffer);  
1467    
1468      if (exclude_compiled != NULL &&  #ifdef SUPPORT_LIBBZ2
1469          pcre_exec(exclude_compiled, NULL, buffer, blen, 0, 0, NULL, 0) >= 0)  if (pathlen > 4 && strcmp(pathname + pathlen - 4, ".bz2") == 0)
1470        continue;    {
1471      inbz2 = BZ2_bzopen(pathname, "rb");
1472      handle = (void *)inbz2;
1473      frtype = FR_LIBBZ2;
1474      }
1475    else
1476    #endif
1477    
1478      if (include_compiled != NULL &&  /* Otherwise use plain fopen(). The label is so that we can come back here if
1479          pcre_exec(include_compiled, NULL, buffer, blen, 0, 0, NULL, 0) < 0)  an attempt to read a .bz2 file indicates that it really is a plain file. */
       continue;  
1480    
1481      frc = grep_or_recurse(buffer, dir_recurse, TRUE, FALSE);  #ifdef SUPPORT_LIBBZ2
1482      if (frc > 1) rc = frc;  PLAIN_FILE:
1483       else if (frc == 0 && rc == 1) rc = 0;  #endif
1484      }    {
1485      in = fopen(pathname, "r");
1486    closedirectory(dir);    handle = (void *)in;
1487    return rc;    frtype = FR_PLAIN;
1488    }    }
1489    
1490  /* If the file is not a directory, or we are not recursing, scan it. If this is  /* All the opening methods return errno when they fail. */
 the first and only argument at top level, we don't show the file name (unless  
 we are only showing the file name). Otherwise, control is via the  
 show_filenames variable. */  
1491    
1492  in = fopen(pathname, "r");  if (handle == NULL)
 if (in == NULL)  
1493    {    {
1494    if (!silent)    if (!silent)
1495      fprintf(stderr, "pcregrep: Failed to open %s: %s\n", pathname,      fprintf(stderr, "pcregrep: Failed to open %s: %s\n", pathname,
# Line 719  if (in == NULL) Line 1497  if (in == NULL)
1497    return 2;    return 2;
1498    }    }
1499    
1500  printname =  (filenames_only || filenames_nomatch_only ||  /* Now grep the file */
   (show_filenames && !only_one_at_top))? pathname : NULL;  
1501    
1502  rc = pcregrep(in, printname);  rc = pcregrep(handle, frtype, (filenames > FN_DEFAULT ||
1503      (filenames == FN_DEFAULT && !only_one_at_top))? pathname : NULL);
1504    
1505    /* Close in an appropriate manner. */
1506    
1507    #ifdef SUPPORT_LIBZ
1508    if (frtype == FR_LIBZ)
1509      gzclose(ingz);
1510    else
1511    #endif
1512    
1513    /* If it is a .bz2 file and the result is 2, it means that the first attempt to
1514    read failed. If the error indicates that the file isn't in fact bzipped, try
1515    again as a normal file. */
1516    
1517    #ifdef SUPPORT_LIBBZ2
1518    if (frtype == FR_LIBBZ2)
1519      {
1520      if (rc == 2)
1521        {
1522        int errnum;
1523        const char *err = BZ2_bzerror(inbz2, &errnum);
1524        if (errnum == BZ_DATA_ERROR_MAGIC)
1525          {
1526          BZ2_bzclose(inbz2);
1527          goto PLAIN_FILE;
1528          }
1529        else if (!silent)
1530          fprintf(stderr, "pcregrep: Failed to read %s using bzlib: %s\n",
1531            pathname, err);
1532        }
1533      BZ2_bzclose(inbz2);
1534      }
1535    else
1536    #endif
1537    
1538    /* Normal file close */
1539    
1540  fclose(in);  fclose(in);
1541    
1542    /* Pass back the yield from pcregrep(). */
1543    
1544  return rc;  return rc;
1545  }  }
1546    
# Line 738  return rc; Line 1554  return rc;
1554  static int  static int
1555  usage(int rc)  usage(int rc)
1556  {  {
1557  fprintf(stderr, "Usage: pcregrep [-LMVcfhilnqrsvwx] [long-options] [pattern] [file1 file2 ...]\n");  option_item *op;
1558  fprintf(stderr, "Type `pcregrep --help' for more information.\n");  fprintf(stderr, "Usage: pcregrep [-");
1559    for (op = optionlist; op->one_char != 0; op++)
1560      {
1561      if (op->one_char > 0) fprintf(stderr, "%c", op->one_char);
1562      }
1563    fprintf(stderr, "] [long options] [pattern] [files]\n");
1564    fprintf(stderr, "Type `pcregrep --help' for more information and the long "
1565      "options.\n");
1566  return rc;  return rc;
1567  }  }
1568    
# Line 757  option_item *op; Line 1580  option_item *op;
1580    
1581  printf("Usage: pcregrep [OPTION]... [PATTERN] [FILE1 FILE2 ...]\n");  printf("Usage: pcregrep [OPTION]... [PATTERN] [FILE1 FILE2 ...]\n");
1582  printf("Search for PATTERN in each FILE or standard input.\n");  printf("Search for PATTERN in each FILE or standard input.\n");
1583  printf("PATTERN must be present if -f is not used.\n");  printf("PATTERN must be present if neither -e nor -f is used.\n");
1584  printf("\"-\" can be used as a file name to mean STDIN.\n");  printf("\"-\" can be used as a file name to mean STDIN.\n");
 printf("Example: pcregrep -i 'hello.*world' menu.h main.c\n\n");  
1585    
1586    #ifdef SUPPORT_LIBZ
1587    printf("Files whose names end in .gz are read using zlib.\n");
1588    #endif
1589    
1590    #ifdef SUPPORT_LIBBZ2
1591    printf("Files whose names end in .bz2 are read using bzlib2.\n");
1592    #endif
1593    
1594    #if defined SUPPORT_LIBZ || defined SUPPORT_LIBBZ2
1595    printf("Other files and the standard input are read as plain files.\n\n");
1596    #else
1597    printf("All files are read as plain files, without any interpretation.\n\n");
1598    #endif
1599    
1600    printf("Example: pcregrep -i 'hello.*world' menu.h main.c\n\n");
1601  printf("Options:\n");  printf("Options:\n");
1602    
1603  for (op = optionlist; op->one_char != 0; op++)  for (op = optionlist; op->one_char != 0; op++)
# Line 768  for (op = optionlist; op->one_char != 0; Line 1605  for (op = optionlist; op->one_char != 0;
1605    int n;    int n;
1606    char s[4];    char s[4];
1607    if (op->one_char > 0) sprintf(s, "-%c,", op->one_char); else strcpy(s, "   ");    if (op->one_char > 0) sprintf(s, "-%c,", op->one_char); else strcpy(s, "   ");
1608    printf("  %s --%s%n", s, op->long_name, &n);    n = 30 - printf("  %s --%s", s, op->long_name);
   n = 30 - n;  
1609    if (n < 1) n = 1;    if (n < 1) n = 1;
1610    printf("%.*s%s\n", n, "                    ", op->help_text);    printf("%.*s%s\n", n, "                    ", op->help_text);
1611    }    }
# Line 794  handle_option(int letter, int options) Line 1630  handle_option(int letter, int options)
1630  {  {
1631  switch(letter)  switch(letter)
1632    {    {
1633    case -1:  help(); exit(0);    case N_FOFFSETS: file_offsets = TRUE; break;
1634      case N_HELP: help(); exit(0);
1635      case N_LOFFSETS: line_offsets = number = TRUE; break;
1636    case 'c': count_only = TRUE; break;    case 'c': count_only = TRUE; break;
1637    case 'h': filenames = FALSE; break;    case 'F': process_options |= PO_FIXED_STRINGS; break;
1638      case 'H': filenames = FN_FORCE; break;
1639      case 'h': filenames = FN_NONE; break;
1640    case 'i': options |= PCRE_CASELESS; break;    case 'i': options |= PCRE_CASELESS; break;
1641    case 'l': filenames_only = TRUE; break;    case 'l': filenames = FN_ONLY; break;
1642    case 'L': filenames_nomatch_only = TRUE; break;    case 'L': filenames = FN_NOMATCH_ONLY; break;
1643    case 'M': multiline = TRUE; options |= PCRE_MULTILINE|PCRE_FIRSTLINE; break;    case 'M': multiline = TRUE; options |= PCRE_MULTILINE|PCRE_FIRSTLINE; break;
1644    case 'n': number = TRUE; break;    case 'n': number = TRUE; break;
1645      case 'o': only_matching = TRUE; break;
1646    case 'q': quiet = TRUE; break;    case 'q': quiet = TRUE; break;
1647    case 'r': recurse = TRUE; break;    case 'r': dee_action = dee_RECURSE; break;
1648    case 's': silent = TRUE; break;    case 's': silent = TRUE; break;
1649    case 'u': options |= PCRE_UTF8; break;    case 'u': options |= PCRE_UTF8; utf8 = TRUE; break;
1650    case 'v': invert = TRUE; break;    case 'v': invert = TRUE; break;
1651    case 'w': word_match = TRUE; break;    case 'w': process_options |= PO_WORD_MATCH; break;
1652    case 'x': whole_lines = TRUE; break;    case 'x': process_options |= PO_LINE_MATCH; break;
1653    
1654    case 'V':    case 'V':
1655    fprintf(stderr, "pcregrep version %s using ", VERSION);    fprintf(stderr, "pcregrep version %s\n", pcre_version());
   fprintf(stderr, "PCRE version %s\n", pcre_version());  
1656    exit(0);    exit(0);
1657    break;    break;
1658    
# Line 828  return options; Line 1668  return options;
1668    
1669    
1670  /*************************************************  /*************************************************
1671    *          Construct printed ordinal             *
1672    *************************************************/
1673    
1674    /* This turns a number into "1st", "3rd", etc. */
1675    
1676    static char *
1677    ordin(int n)
1678    {
1679    static char buffer[8];
1680    char *p = buffer;
1681    sprintf(p, "%d", n);
1682    while (*p != 0) p++;
1683    switch (n%10)
1684      {
1685      case 1: strcpy(p, "st"); break;
1686      case 2: strcpy(p, "nd"); break;
1687      case 3: strcpy(p, "rd"); break;
1688      default: strcpy(p, "th"); break;
1689      }
1690    return buffer;
1691    }
1692    
1693    
1694    
1695    /*************************************************
1696    *          Compile a single pattern              *
1697    *************************************************/
1698    
1699    /* When the -F option has been used, this is called for each substring.
1700    Otherwise it's called for each supplied pattern.
1701    
1702    Arguments:
1703      pattern        the pattern string
1704      options        the PCRE options
1705      filename       the file name, or NULL for a command-line pattern
1706      count          0 if this is the only command line pattern, or
1707                     number of the command line pattern, or
1708                     linenumber for a pattern from a file
1709    
1710    Returns:         TRUE on success, FALSE after an error
1711    */
1712    
1713    static BOOL
1714    compile_single_pattern(char *pattern, int options, char *filename, int count)
1715    {
1716    char buffer[MBUFTHIRD + 16];
1717    const char *error;
1718    int errptr;
1719    
1720    if (pattern_count >= MAX_PATTERN_COUNT)
1721      {
1722      fprintf(stderr, "pcregrep: Too many %spatterns (max %d)\n",
1723        (filename == NULL)? "command-line " : "", MAX_PATTERN_COUNT);
1724      return FALSE;
1725      }
1726    
1727    sprintf(buffer, "%s%.*s%s", prefix[process_options], MBUFTHIRD, pattern,
1728      suffix[process_options]);
1729    pattern_list[pattern_count] =
1730      pcre_compile(buffer, options, &error, &errptr, pcretables);
1731    if (pattern_list[pattern_count] != NULL)
1732      {
1733      pattern_count++;
1734      return TRUE;
1735      }
1736    
1737    /* Handle compile errors */
1738    
1739    errptr -= (int)strlen(prefix[process_options]);
1740    if (errptr > (int)strlen(pattern)) errptr = (int)strlen(pattern);
1741    
1742    if (filename == NULL)
1743      {
1744      if (count == 0)
1745        fprintf(stderr, "pcregrep: Error in command-line regex "
1746          "at offset %d: %s\n", errptr, error);
1747      else
1748        fprintf(stderr, "pcregrep: Error in %s command-line regex "
1749          "at offset %d: %s\n", ordin(count), errptr, error);
1750      }
1751    else
1752      {
1753      fprintf(stderr, "pcregrep: Error in regex in line %d of %s "
1754        "at offset %d: %s\n", count, filename, errptr, error);
1755      }
1756    
1757    return FALSE;
1758    }
1759    
1760    
1761    
1762    /*************************************************
1763    *           Compile one supplied pattern         *
1764    *************************************************/
1765    
1766    /* When the -F option has been used, each string may be a list of strings,
1767    separated by line breaks. They will be matched literally.
1768    
1769    Arguments:
1770      pattern        the pattern string
1771      options        the PCRE options
1772      filename       the file name, or NULL for a command-line pattern
1773      count          0 if this is the only command line pattern, or
1774                     number of the command line pattern, or
1775                     linenumber for a pattern from a file
1776    
1777    Returns:         TRUE on success, FALSE after an error
1778    */
1779    
1780    static BOOL
1781    compile_pattern(char *pattern, int options, char *filename, int count)
1782    {
1783    if ((process_options & PO_FIXED_STRINGS) != 0)
1784      {
1785      char *eop = pattern + strlen(pattern);
1786      char buffer[MBUFTHIRD];
1787      for(;;)
1788        {
1789        int ellength;
1790        char *p = end_of_line(pattern, eop, &ellength);
1791        if (ellength == 0)
1792          return compile_single_pattern(pattern, options, filename, count);
1793        sprintf(buffer, "%.*s", (int)(p - pattern - ellength), pattern);
1794        pattern = p;
1795        if (!compile_single_pattern(buffer, options, filename, count))
1796          return FALSE;
1797        }
1798      }
1799    else return compile_single_pattern(pattern, options, filename, count);
1800    }
1801    
1802    
1803    
1804    /*************************************************
1805  *                Main program                    *  *                Main program                    *
1806  *************************************************/  *************************************************/
1807    
# Line 838  main(int argc, char **argv) Line 1812  main(int argc, char **argv)
1812  {  {
1813  int i, j;  int i, j;
1814  int rc = 1;  int rc = 1;
1815  int options = 0;  int pcre_options = 0;
1816    int cmd_pattern_count = 0;
1817    int hint_count = 0;
1818  int errptr;  int errptr;
 const char *error;  
1819  BOOL only_one_at_top;  BOOL only_one_at_top;
1820    char *patterns[MAX_PATTERN_COUNT];
1821    const char *locale_from = "--locale";
1822    const char *error;
1823    
1824    /* Set the default line ending value from the default in the PCRE library;
1825    "lf", "cr", "crlf", and "any" are supported. Anything else is treated as "lf".
1826    */
1827    
1828    (void)pcre_config(PCRE_CONFIG_NEWLINE, &i);
1829    switch(i)
1830      {
1831      default:                 newline = (char *)"lf"; break;
1832      case '\r':               newline = (char *)"cr"; break;
1833      case ('\r' << 8) | '\n': newline = (char *)"crlf"; break;
1834      case -1:                 newline = (char *)"any"; break;
1835      case -2:                 newline = (char *)"anycrlf"; break;
1836      }
1837    
1838  /* Process the options */  /* Process the options */
1839    
# Line 855  for (i = 1; i < argc; i++) Line 1847  for (i = 1; i < argc; i++)
1847    if (argv[i][0] != '-') break;    if (argv[i][0] != '-') break;
1848    
1849    /* 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,
1850    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. */
1851    
1852    if (argv[i][1] == 0)    if (argv[i][1] == 0)
1853      {      {
1854      if (pattern_filename != NULL) break;      if (pattern_filename != NULL || pattern_count > 0) break;
1855        else exit(usage(2));        else exit(usage(2));
1856      }      }
1857    
# Line 881  for (i = 1; i < argc; i++) Line 1873  for (i = 1; i < argc; i++)
1873      /* Some long options have data that follows after =, for example file=name.      /* Some long options have data that follows after =, for example file=name.
1874      Some options have variations in the long name spelling: specifically, we      Some options have variations in the long name spelling: specifically, we
1875      allow "regexp" because GNU grep allows it, though I personally go along      allow "regexp" because GNU grep allows it, though I personally go along
1876      with Jeff Friedl in preferring "regex" without the "p". These options are      with Jeffrey Friedl and Larry Wall in preferring "regex" without the "p".
1877      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
1878      fortunately. */      these categories, fortunately. */
1879    
1880      for (op = optionlist; op->one_char != 0; op++)      for (op = optionlist; op->one_char != 0; op++)
1881        {        {
# Line 898  for (i = 1; i < argc; i++) Line 1890  for (i = 1; i < argc; i++)
1890          else                 /* Special case xxx=data */          else                 /* Special case xxx=data */
1891            {            {
1892            int oplen = equals - op->long_name;            int oplen = equals - op->long_name;
1893            int arglen = (argequals == NULL)? strlen(arg) : argequals - arg;            int arglen = (argequals == NULL)? (int)strlen(arg) : argequals - arg;
1894            if (oplen == arglen && strncmp(arg, op->long_name, oplen) == 0)            if (oplen == arglen && strncmp(arg, op->long_name, oplen) == 0)
1895              {              {
1896              option_data = arg + arglen;              option_data = arg + arglen;
# Line 917  for (i = 1; i < argc; i++) Line 1909  for (i = 1; i < argc; i++)
1909          char buff2[24];          char buff2[24];
1910          int baselen = opbra - op->long_name;          int baselen = opbra - op->long_name;
1911          sprintf(buff1, "%.*s", baselen, op->long_name);          sprintf(buff1, "%.*s", baselen, op->long_name);
1912          sprintf(buff2, "%s%.*s", buff1, strlen(op->long_name) - baselen - 2,          sprintf(buff2, "%s%.*s", buff1,
1913            opbra + 1);            (int)strlen(op->long_name) - baselen - 2, opbra + 1);
1914          if (strcmp(arg, buff1) == 0 || strcmp(arg, buff2) == 0)          if (strcmp(arg, buff1) == 0 || strcmp(arg, buff2) == 0)
1915            break;            break;
1916          }          }
# Line 931  for (i = 1; i < argc; i++) Line 1923  for (i = 1; i < argc; i++)
1923        }        }
1924      }      }
1925    
1926    
1927      /* Jeffrey Friedl's debugging harness uses these additional options which
1928      are not in the right form for putting in the option table because they use
1929      only one hyphen, yet are more than one character long. By putting them
1930      separately here, they will not get displayed as part of the help() output,
1931      but I don't think Jeffrey will care about that. */
1932    
1933    #ifdef JFRIEDL_DEBUG
1934      else if (strcmp(argv[i], "-pre") == 0) {
1935              jfriedl_prefix = argv[++i];
1936              continue;
1937      } else if (strcmp(argv[i], "-post") == 0) {
1938              jfriedl_postfix = argv[++i];
1939              continue;
1940      } else if (strcmp(argv[i], "-XT") == 0) {
1941              sscanf(argv[++i], "%d", &jfriedl_XT);
1942              continue;
1943      } else if (strcmp(argv[i], "-XR") == 0) {
1944              sscanf(argv[++i], "%d", &jfriedl_XR);
1945              continue;
1946      }
1947    #endif
1948    
1949    
1950    /* 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
1951    continue till we hit the last one or one that needs data. */    continue till we hit the last one or one that needs data. */
1952    
# Line 953  for (i = 1; i < argc; i++) Line 1969  for (i = 1; i < argc; i++)
1969          option_data = s+1;          option_data = s+1;
1970          break;          break;
1971          }          }
1972        options = handle_option(*s++, options);        pcre_options = handle_option(*s++, pcre_options);
1973        }        }
1974      }      }
1975    
1976    /* 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
1977      is NO_DATA, it means that there is no data, and the option might set
1978      something in the PCRE options. */
1979    
1980    if (op->type == OP_NODATA)    if (op->type == OP_NODATA)
     options = handle_option(op->one_char, options);  
   else  
1981      {      {
1982      if (*option_data == 0)      pcre_options = handle_option(op->one_char, pcre_options);
1983        continue;
1984        }
1985    
1986      /* If the option type is OP_OP_STRING or OP_OP_NUMBER, it's an option that
1987      either has a value or defaults to something. It cannot have data in a
1988      separate item. At the moment, the only such options are "colo(u)r" and
1989      Jeffrey Friedl's special -S debugging option. */
1990    
1991      if (*option_data == 0 &&
1992          (op->type == OP_OP_STRING || op->type == OP_OP_NUMBER))
1993        {
1994        switch (op->one_char)
1995        {        {
1996        if (i >= argc - 1 || longopwasequals)        case N_COLOUR:
1997          {        colour_option = (char *)"auto";
1998          fprintf(stderr, "pcregrep: Data missing after %s\n", argv[i]);        break;
1999          exit(usage(2));  #ifdef JFRIEDL_DEBUG
2000          }        case 'S':
2001        option_data = argv[++i];        S_arg = 0;
2002          break;
2003    #endif
2004        }        }
2005        continue;
2006        }
2007    
2008      /* Otherwise, find the data string for the option. */
2009    
2010      if (op->type == OP_STRING) *((char **)op->dataptr) = option_data; else    if (*option_data == 0)
2011        {
2012        if (i >= argc - 1 || longopwasequals)
2013        {        {
2014        char *endptr;        fprintf(stderr, "pcregrep: Data missing after %s\n", argv[i]);
2015        int n = strtoul(option_data, &endptr, 10);        exit(usage(2));
2016        if (*endptr != 0)        }
2017        option_data = argv[++i];
2018        }
2019    
2020      /* If the option type is OP_PATLIST, it's the -e option, which can be called
2021      multiple times to create a list of patterns. */
2022    
2023      if (op->type == OP_PATLIST)
2024        {
2025        if (cmd_pattern_count >= MAX_PATTERN_COUNT)
2026          {
2027          fprintf(stderr, "pcregrep: Too many command-line patterns (max %d)\n",
2028            MAX_PATTERN_COUNT);
2029          return 2;
2030          }
2031        patterns[cmd_pattern_count++] = option_data;
2032        }
2033    
2034      /* Otherwise, deal with single string or numeric data values. */
2035    
2036      else if (op->type != OP_NUMBER && op->type != OP_OP_NUMBER)
2037        {
2038        *((char **)op->dataptr) = option_data;
2039        }
2040      else
2041        {
2042        char *endptr;
2043        int n = strtoul(option_data, &endptr, 10);
2044        if (*endptr != 0)
2045          {
2046          if (longop)
2047          {          {
2048          if (longop)          char *equals = strchr(op->long_name, '=');
2049            fprintf(stderr, "pcregrep: Malformed number \"%s\" after --%s\n",          int nlen = (equals == NULL)? (int)strlen(op->long_name) :
2050              option_data, op->long_name);            equals - op->long_name;
2051          else          fprintf(stderr, "pcregrep: Malformed number \"%s\" after --%.*s\n",
2052            fprintf(stderr, "pcregrep: Malformed number \"%s\" after -%c\n",            option_data, nlen, op->long_name);
             option_data, op->one_char);  
         exit(usage(2));  
2053          }          }
2054        *((int *)op->dataptr) = n;        else
2055            fprintf(stderr, "pcregrep: Malformed number \"%s\" after -%c\n",
2056              option_data, op->one_char);
2057          exit(usage(2));
2058        }        }
2059        *((int *)op->dataptr) = n;
2060      }      }
2061    }    }
2062    
# Line 1001  if (both_context > 0) Line 2069  if (both_context > 0)
2069    if (before_context == 0) before_context = both_context;    if (before_context == 0) before_context = both_context;
2070    }    }
2071    
2072  pattern_list = (pcre **)malloc(MAX_PATTERN_COUNT * sizeof(pcre *));  /* Only one of --only-matching, --file-offsets, or --line-offsets is permitted.
2073  hints_list = (pcre_extra **)malloc(MAX_PATTERN_COUNT * sizeof(pcre_extra *));  However, the latter two set the only_matching flag. */
2074    
2075  if (pattern_list == NULL || hints_list == NULL)  if ((only_matching && (file_offsets || line_offsets)) ||
2076        (file_offsets && line_offsets))
2077    {    {
2078    fprintf(stderr, "pcregrep: malloc failed\n");    fprintf(stderr, "pcregrep: Cannot mix --only-matching, --file-offsets "
2079    return 2;      "and/or --line-offsets\n");
2080      exit(usage(2));
2081    }    }
2082    
2083  /* Compile the regular expression(s). */  if (file_offsets || line_offsets) only_matching = TRUE;
2084    
2085  if (pattern_filename != NULL)  /* If a locale has not been provided as an option, see if the LC_CTYPE or
2086    LC_ALL environment variable is set, and if so, use it. */
2087    
2088    if (locale == NULL)
2089    {    {
2090    FILE *f = fopen(pattern_filename, "r");    locale = getenv("LC_ALL");
2091    char buffer[MBUFTHIRD + 16];    locale_from = "LCC_ALL";
2092    char *rdstart;    }
2093    int adjust = 0;  
2094    if (locale == NULL)
2095      {
2096      locale = getenv("LC_CTYPE");
2097      locale_from = "LC_CTYPE";
2098      }
2099    
2100    if (f == NULL)  /* If a locale has been provided, set it, and generate the tables the PCRE
2101    needs. Otherwise, pcretables==NULL, which causes the use of default tables. */
2102    
2103    if (locale != NULL)
2104      {
2105      if (setlocale(LC_CTYPE, locale) == NULL)
2106      {      {
2107      fprintf(stderr, "pcregrep: Failed to open %s: %s\n", pattern_filename,      fprintf(stderr, "pcregrep: Failed to set locale %s (obtained from %s)\n",
2108        strerror(errno));        locale, locale_from);
2109      return 2;      return 2;
2110      }      }
2111      pcretables = pcre_maketables();
2112      }
2113    
2114    /* Sort out colouring */
2115    
2116    if (whole_lines)  if (colour_option != NULL && strcmp(colour_option, "never") != 0)
2117      {
2118      if (strcmp(colour_option, "always") == 0) do_colour = TRUE;
2119      else if (strcmp(colour_option, "auto") == 0) do_colour = is_stdout_tty();
2120      else
2121        {
2122        fprintf(stderr, "pcregrep: Unknown colour setting \"%s\"\n",
2123          colour_option);
2124        return 2;
2125        }
2126      if (do_colour)
2127      {      {
2128      strcpy(buffer, "^(?:");      char *cs = getenv("PCREGREP_COLOUR");
2129      adjust = 4;      if (cs == NULL) cs = getenv("PCREGREP_COLOR");
2130        if (cs != NULL) colour_string = cs;
2131      }      }
2132    else if (word_match)    }
2133    
2134    /* Interpret the newline type; the default settings are Unix-like. */
2135    
2136    if (strcmp(newline, "cr") == 0 || strcmp(newline, "CR") == 0)
2137      {
2138      pcre_options |= PCRE_NEWLINE_CR;
2139      endlinetype = EL_CR;
2140      }
2141    else if (strcmp(newline, "lf") == 0 || strcmp(newline, "LF") == 0)
2142      {
2143      pcre_options |= PCRE_NEWLINE_LF;
2144      endlinetype = EL_LF;
2145      }
2146    else if (strcmp(newline, "crlf") == 0 || strcmp(newline, "CRLF") == 0)
2147      {
2148      pcre_options |= PCRE_NEWLINE_CRLF;
2149      endlinetype = EL_CRLF;
2150      }
2151    else if (strcmp(newline, "any") == 0 || strcmp(newline, "ANY") == 0)
2152      {
2153      pcre_options |= PCRE_NEWLINE_ANY;
2154      endlinetype = EL_ANY;
2155      }
2156    else if (strcmp(newline, "anycrlf") == 0 || strcmp(newline, "ANYCRLF") == 0)
2157      {
2158      pcre_options |= PCRE_NEWLINE_ANYCRLF;
2159      endlinetype = EL_ANYCRLF;
2160      }
2161    else
2162      {
2163      fprintf(stderr, "pcregrep: Invalid newline specifier \"%s\"\n", newline);
2164      return 2;
2165      }
2166    
2167    /* Interpret the text values for -d and -D */
2168    
2169    if (dee_option != NULL)
2170      {
2171      if (strcmp(dee_option, "read") == 0) dee_action = dee_READ;
2172      else if (strcmp(dee_option, "recurse") == 0) dee_action = dee_RECURSE;
2173      else if (strcmp(dee_option, "skip") == 0) dee_action = dee_SKIP;
2174      else
2175      {      {
2176      strcpy(buffer, "\\b");      fprintf(stderr, "pcregrep: Invalid value \"%s\" for -d\n", dee_option);
2177      adjust = 2;      return 2;
2178      }      }
2179      }
2180    
2181    rdstart = buffer + adjust;  if (DEE_option != NULL)
2182    while (fgets(rdstart, MBUFTHIRD, f) != NULL)    {
2183      if (strcmp(DEE_option, "read") == 0) DEE_action = DEE_READ;
2184      else if (strcmp(DEE_option, "skip") == 0) DEE_action = DEE_SKIP;
2185      else
2186      {      {
2187      char *s = rdstart + (int)strlen(rdstart);      fprintf(stderr, "pcregrep: Invalid value \"%s\" for -D\n", DEE_option);
2188      if (pattern_count >= MAX_PATTERN_COUNT)      return 2;
       {  
       fprintf(stderr, "pcregrep: Too many patterns in file (max %d)\n",  
         MAX_PATTERN_COUNT);  
       return 2;  
       }  
     while (s > rdstart && isspace((unsigned char)(s[-1]))) s--;  
     if (s == rdstart) continue;  
     if (whole_lines) strcpy(s, ")$");  
       else if (word_match)strcpy(s, "\\b");  
         else *s = 0;  
     pattern_list[pattern_count] = pcre_compile(buffer, options, &error,  
       &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;  
       }  
2189      }      }
   fclose(f);  
2190    }    }
2191    
2192  /* If no file name, a single regex must be given inline. */  /* Check the values for Jeffrey Friedl's debugging options. */
2193    
2194  else  #ifdef JFRIEDL_DEBUG
2195    if (S_arg > 9)
2196    {    {
2197    char buffer[MBUFTHIRD + 16];    fprintf(stderr, "pcregrep: bad value for -S option\n");
2198    char *pat;    return 2;
2199    int adjust = 0;    }
2200    if (jfriedl_XT != 0 || jfriedl_XR != 0)
2201      {
2202      if (jfriedl_XT == 0) jfriedl_XT = 1;
2203      if (jfriedl_XR == 0) jfriedl_XR = 1;
2204      }
2205    #endif
2206    
2207    /* Get memory to store the pattern and hints lists. */
2208    
2209    pattern_list = (pcre **)malloc(MAX_PATTERN_COUNT * sizeof(pcre *));
2210    hints_list = (pcre_extra **)malloc(MAX_PATTERN_COUNT * sizeof(pcre_extra *));
2211    
2212    if (pattern_list == NULL || hints_list == NULL)
2213      {
2214      fprintf(stderr, "pcregrep: malloc failed\n");
2215      goto EXIT2;
2216      }
2217    
2218    /* If no patterns were provided by -e, and there is no file provided by -f,
2219    the first argument is the one and only pattern, and it must exist. */
2220    
2221    if (cmd_pattern_count == 0 && pattern_filename == NULL)
2222      {
2223    if (i >= argc) return usage(2);    if (i >= argc) return usage(2);
2224      patterns[cmd_pattern_count++] = argv[i++];
2225      }
2226    
2227    /* Compile the patterns that were provided on the command line, either by
2228    multiple uses of -e or as a single unkeyed pattern. */
2229    
2230    if (whole_lines)  for (j = 0; j < cmd_pattern_count; j++)
2231      {
2232      if (!compile_pattern(patterns[j], pcre_options, NULL,
2233           (j == 0 && cmd_pattern_count == 1)? 0 : j + 1))
2234        goto EXIT2;
2235      }
2236    
2237    /* Compile the regular expressions that are provided in a file. */
2238    
2239    if (pattern_filename != NULL)
2240      {
2241      int linenumber = 0;
2242      FILE *f;
2243      char *filename;
2244      char buffer[MBUFTHIRD];
2245    
2246      if (strcmp(pattern_filename, "-") == 0)
2247      {      {
2248      sprintf(buffer, "^(?:%.*s)$", MBUFTHIRD, argv[i++]);      f = stdin;
2249      pat = buffer;      filename = stdin_name;
     adjust = 4;  
2250      }      }
2251    else if (word_match)    else
2252      {      {
2253      sprintf(buffer, "\\b%.*s\\b", MBUFTHIRD, argv[i++]);      f = fopen(pattern_filename, "r");
2254      pat = buffer;      if (f == NULL)
2255      adjust = 2;        {
2256          fprintf(stderr, "pcregrep: Failed to open %s: %s\n", pattern_filename,
2257            strerror(errno));
2258          goto EXIT2;
2259          }
2260        filename = pattern_filename;
2261      }      }
   else pat = argv[i++];  
2262    
2263    pattern_list[0] = pcre_compile(pat, options, &error, &errptr, NULL);    while (fgets(buffer, MBUFTHIRD, f) != NULL)
   
   if (pattern_list[0] == NULL)  
2264      {      {
2265      fprintf(stderr, "pcregrep: Error in regex at offset %d: %s\n",      char *s = buffer + (int)strlen(buffer);
2266        errptr - adjust, error);      while (s > buffer && isspace((unsigned char)(s[-1]))) s--;
2267      return 2;      *s = 0;
2268        linenumber++;
2269        if (buffer[0] == 0) continue;   /* Skip blank lines */
2270        if (!compile_pattern(buffer, pcre_options, filename, linenumber))
2271          goto EXIT2;
2272      }      }
2273    pattern_count++;  
2274      if (f != stdin) fclose(f);
2275    }    }
2276    
2277  /* 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 2284  for (j = 0; j < pattern_count; j++)
2284      char s[16];      char s[16];
2285      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);
2286      fprintf(stderr, "pcregrep: Error while studying regex%s: %s\n", s, error);      fprintf(stderr, "pcregrep: Error while studying regex%s: %s\n", s, error);
2287      return 2;      goto EXIT2;
2288      }      }
2289      hint_count++;
2290    }    }
2291    
2292  /* If there are include or exclude patterns, compile them. */  /* If there are include or exclude patterns, compile them. */
2293    
2294  if (exclude_pattern != NULL)  if (exclude_pattern != NULL)
2295    {    {
2296    exclude_compiled = pcre_compile(exclude_pattern, 0, &error, &errptr, NULL);    exclude_compiled = pcre_compile(exclude_pattern, 0, &error, &errptr,
2297        pcretables);
2298    if (exclude_compiled == NULL)    if (exclude_compiled == NULL)
2299      {      {
2300      fprintf(stderr, "pcregrep: Error in 'exclude' regex at offset %d: %s\n",      fprintf(stderr, "pcregrep: Error in 'exclude' regex at offset %d: %s\n",
2301        errptr, error);        errptr, error);
2302      return 2;      goto EXIT2;
2303      }      }
2304    }    }
2305    
2306  if (include_pattern != NULL)  if (include_pattern != NULL)
2307    {    {
2308    include_compiled = pcre_compile(include_pattern, 0, &error, &errptr, NULL);    include_compiled = pcre_compile(include_pattern, 0, &error, &errptr,
2309        pcretables);
2310    if (include_compiled == NULL)    if (include_compiled == NULL)
2311      {      {
2312      fprintf(stderr, "pcregrep: Error in 'include' regex at offset %d: %s\n",      fprintf(stderr, "pcregrep: Error in 'include' regex at offset %d: %s\n",
2313        errptr, error);        errptr, error);
2314      return 2;      goto EXIT2;
2315        }
2316      }
2317    
2318    if (exclude_dir_pattern != NULL)
2319      {
2320      exclude_dir_compiled = pcre_compile(exclude_dir_pattern, 0, &error, &errptr,
2321        pcretables);
2322      if (exclude_dir_compiled == NULL)
2323        {
2324        fprintf(stderr, "pcregrep: Error in 'exclude_dir' regex at offset %d: %s\n",
2325          errptr, error);
2326        goto EXIT2;
2327        }
2328      }
2329    
2330    if (include_dir_pattern != NULL)
2331      {
2332      include_dir_compiled = pcre_compile(include_dir_pattern, 0, &error, &errptr,
2333        pcretables);
2334      if (include_dir_compiled == NULL)
2335        {
2336        fprintf(stderr, "pcregrep: Error in 'include_dir' regex at offset %d: %s\n",
2337          errptr, error);
2338        goto EXIT2;
2339      }      }
2340    }    }
2341    
2342  /* 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. */
2343    
2344  if (i >= argc) return pcregrep(stdin,  if (i >= argc)
2345    (filenames_only || filenames_nomatch_only)? stdin_name : NULL);    {
2346      rc = pcregrep(stdin, FR_PLAIN, (filenames > FN_DEFAULT)? stdin_name : NULL);
2347      goto EXIT;
2348      }
2349    
2350  /* Otherwise, work through the remaining arguments as files or directories.  /* Otherwise, work through the remaining arguments as files or directories.
2351  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
2352  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
2353  */  otherwise forced. */
2354    
2355  only_one_at_top = (i == argc - 1);  only_one_at_top = i == argc - 1;   /* Catch initial value of i */
2356    
2357  for (; i < argc; i++)  for (; i < argc; i++)
2358    {    {
2359    int frc = grep_or_recurse(argv[i], recurse, filenames, only_one_at_top);    int frc = grep_or_recurse(argv[i], dee_action == dee_RECURSE,
2360        only_one_at_top);
2361    if (frc > 1) rc = frc;    if (frc > 1) rc = frc;
2362      else if (frc == 0 && rc == 1) rc = 0;      else if (frc == 0 && rc == 1) rc = 0;
2363    }    }
2364    
2365    EXIT:
2366    if (pattern_list != NULL)
2367      {
2368      for (i = 0; i < pattern_count; i++) free(pattern_list[i]);
2369      free(pattern_list);
2370      }
2371    if (hints_list != NULL)
2372      {
2373      for (i = 0; i < hint_count; i++) free(hints_list[i]);
2374      free(hints_list);
2375      }
2376  return rc;  return rc;
2377    
2378    EXIT2:
2379    rc = 2;
2380    goto EXIT;
2381  }  }
2382    
2383  /* End of pcregrep */  /* End of pcregrep */

Legend:
Removed from v.77  
changed lines
  Added in v.377

  ViewVC Help
Powered by ViewVC 1.1.5