/[pcre]/code/trunk/pcregrep.c
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revision 87 by nigel, Sat Feb 24 21:41:21 2007 UTC revision 879 by ph10, Sun Jan 15 15:50:06 2012 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) 1997-2006 University of Cambridge             Copyright (c) 1997-2012 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>  #include <locale.h>
46  #include <stdio.h>  #include <stdio.h>
# Line 46  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 56  POSSIBILITY OF SUCH DAMAGE. Line 70  POSSIBILITY OF SUCH DAMAGE.
70    
71  typedef int BOOL;  typedef int BOOL;
72    
 #define VERSION "4.2 09-Jan-2006"  
73  #define MAX_PATTERN_COUNT 100  #define MAX_PATTERN_COUNT 100
74    #define OFFSET_SIZE 99
75    
76  #if BUFSIZ > 8192  #if BUFSIZ > 8192
77  #define MBUFTHIRD BUFSIZ  #define PATBUFSIZE BUFSIZ
78  #else  #else
79  #define MBUFTHIRD 8192  #define PATBUFSIZE 8192
80  #endif  #endif
81    
   
82  /* Values for the "filenames" variable, which specifies options for file name  /* Values for the "filenames" variable, which specifies options for file name
83  output. The order is important; it is assumed that a file name is wanted for  output. The order is important; it is assumed that a file name is wanted for
84  all values greater than FN_DEFAULT. */  all values greater than FN_DEFAULT. */
85    
86  enum { FN_NONE, FN_DEFAULT, FN_ONLY, FN_NOMATCH_ONLY, FN_FORCE };  enum { FN_NONE, FN_DEFAULT, FN_MATCH_ONLY, FN_NOMATCH_ONLY, FN_FORCE };
87    
88    /* File reading styles */
89    
90    enum { FR_PLAIN, FR_LIBZ, FR_LIBBZ2 };
91    
92  /* Actions for the -d and -D options */  /* Actions for the -d and -D options */
93    
# Line 83  enum { DEE_READ, DEE_SKIP }; Line 100  enum { DEE_READ, DEE_SKIP };
100  #define PO_LINE_MATCH     0x0002  #define PO_LINE_MATCH     0x0002
101  #define PO_FIXED_STRINGS  0x0004  #define PO_FIXED_STRINGS  0x0004
102    
103    /* Line ending types */
104    
105    enum { EL_LF, EL_CR, EL_CRLF, EL_ANY, EL_ANYCRLF };
106    
107    /* In newer versions of gcc, with FORTIFY_SOURCE set (the default in some
108    environments), a warning is issued if the value of fwrite() is ignored.
109    Unfortunately, casting to (void) does not suppress the warning. To get round
110    this, we use a macro that compiles a fudge. Oddly, this does not also seem to
111    apply to fprintf(). */
112    
113    #define FWRITE(a,b,c,d) if (fwrite(a,b,c,d)) {}
114    
115    
116    
117  /*************************************************  /*************************************************
# Line 94  regular code. */ Line 123  regular code. */
123    
124  #ifdef JFRIEDL_DEBUG  #ifdef JFRIEDL_DEBUG
125  static int S_arg = -1;  static int S_arg = -1;
126    static unsigned int jfriedl_XR = 0; /* repeat regex attempt this many times */
127    static unsigned int jfriedl_XT = 0; /* replicate text this many times */
128    static const char *jfriedl_prefix = "";
129    static const char *jfriedl_postfix = "";
130  #endif  #endif
131    
132    static int  endlinetype;
133    
134  static char *colour_string = (char *)"1;31";  static char *colour_string = (char *)"1;31";
135  static char *colour_option = NULL;  static char *colour_option = NULL;
136  static char *dee_option = NULL;  static char *dee_option = NULL;
137  static char *DEE_option = NULL;  static char *DEE_option = NULL;
138    static char *main_buffer = NULL;
139    static char *newline = NULL;
140  static char *pattern_filename = NULL;  static char *pattern_filename = NULL;
141  static char *stdin_name = (char *)"(standard input)";  static char *stdin_name = (char *)"(standard input)";
142  static char *locale = NULL;  static char *locale = NULL;
# Line 107  static char *locale = NULL; Line 144  static char *locale = NULL;
144  static const unsigned char *pcretables = NULL;  static const unsigned char *pcretables = NULL;
145    
146  static int  pattern_count = 0;  static int  pattern_count = 0;
147  static pcre **pattern_list;  static pcre **pattern_list = NULL;
148  static pcre_extra **hints_list;  static pcre_extra **hints_list = NULL;
149    
150  static char *include_pattern = NULL;  static char *include_pattern = NULL;
151  static char *exclude_pattern = NULL;  static char *exclude_pattern = NULL;
152    static char *include_dir_pattern = NULL;
153    static char *exclude_dir_pattern = NULL;
154    
155  static pcre *include_compiled = NULL;  static pcre *include_compiled = NULL;
156  static pcre *exclude_compiled = NULL;  static pcre *exclude_compiled = NULL;
157    static pcre *include_dir_compiled = NULL;
158    static pcre *exclude_dir_compiled = NULL;
159    
160  static int after_context = 0;  static int after_context = 0;
161  static int before_context = 0;  static int before_context = 0;
162  static int both_context = 0;  static int both_context = 0;
163    static int bufthird = PCREGREP_BUFSIZE;
164    static int bufsize = 3*PCREGREP_BUFSIZE;
165  static int dee_action = dee_READ;  static int dee_action = dee_READ;
166  static int DEE_action = DEE_READ;  static int DEE_action = DEE_READ;
167  static int error_count = 0;  static int error_count = 0;
168  static int filenames = FN_DEFAULT;  static int filenames = FN_DEFAULT;
169    static int only_matching = -1;
170  static int process_options = 0;  static int process_options = 0;
171    
172    #ifdef SUPPORT_PCREGREP_JIT
173    static int study_options = PCRE_STUDY_JIT_COMPILE;
174    #else
175    static int study_options = 0;
176    #endif
177    
178    static unsigned long int match_limit = 0;
179    static unsigned long int match_limit_recursion = 0;
180    
181  static BOOL count_only = FALSE;  static BOOL count_only = FALSE;
182  static BOOL do_colour = FALSE;  static BOOL do_colour = FALSE;
183    static BOOL file_offsets = FALSE;
184  static BOOL hyphenpending = FALSE;  static BOOL hyphenpending = FALSE;
185  static BOOL invert = FALSE;  static BOOL invert = FALSE;
186    static BOOL line_buffered = FALSE;
187    static BOOL line_offsets = FALSE;
188  static BOOL multiline = FALSE;  static BOOL multiline = FALSE;
189  static BOOL number = FALSE;  static BOOL number = FALSE;
190  static BOOL only_matching = FALSE;  static BOOL omit_zero_count = FALSE;
191    static BOOL resource_error = FALSE;
192  static BOOL quiet = FALSE;  static BOOL quiet = FALSE;
193  static BOOL silent = FALSE;  static BOOL silent = FALSE;
194    static BOOL utf8 = FALSE;
195    
196  /* Structure for options and list of them */  /* Structure for options and list of them */
197    
198  enum { OP_NODATA, OP_STRING, OP_OP_STRING, OP_NUMBER, OP_OP_NUMBER,  enum { OP_NODATA, OP_STRING, OP_OP_STRING, OP_NUMBER, OP_LONGNUMBER,
199         OP_PATLIST };         OP_OP_NUMBER, OP_PATLIST };
200    
201  typedef struct option_item {  typedef struct option_item {
202    int type;    int type;
# Line 151  typedef struct option_item { Line 209  typedef struct option_item {
209  /* Options without a single-letter equivalent get a negative value. This can be  /* Options without a single-letter equivalent get a negative value. This can be
210  used to identify them. */  used to identify them. */
211    
212  #define N_COLOUR    (-1)  #define N_COLOUR       (-1)
213  #define N_EXCLUDE   (-2)  #define N_EXCLUDE      (-2)
214  #define N_HELP      (-3)  #define N_EXCLUDE_DIR  (-3)
215  #define N_INCLUDE   (-4)  #define N_HELP         (-4)
216  #define N_LABEL     (-5)  #define N_INCLUDE      (-5)
217  #define N_LOCALE    (-6)  #define N_INCLUDE_DIR  (-6)
218  #define N_NULL      (-7)  #define N_LABEL        (-7)
219    #define N_LOCALE       (-8)
220    #define N_NULL         (-9)
221    #define N_LOFFSETS     (-10)
222    #define N_FOFFSETS     (-11)
223    #define N_LBUFFER      (-12)
224    #define N_M_LIMIT      (-13)
225    #define N_M_LIMIT_REC  (-14)
226    #define N_BUFSIZE      (-15)
227    #define N_NOJIT        (-16)
228    
229  static option_item optionlist[] = {  static option_item optionlist[] = {
230    { OP_NODATA,    N_NULL,   NULL,              "",              "  terminate options" },    { OP_NODATA,     N_NULL,   NULL,              "",              "  terminate options" },
231    { OP_NODATA,    N_HELP,   NULL,              "help",          "display this help and exit" },    { OP_NODATA,     N_HELP,   NULL,              "help",          "display this help and exit" },
232    { 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" },
233    { 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" },
234    { OP_OP_STRING, N_COLOUR, &colour_option,    "color=option",  "matched text color option" },    { OP_NUMBER,     N_BUFSIZE,&bufthird,         "buffer-size=number", "set processing buffer size parameter" },
235    { 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" },
236    { OP_NODATA,    'c',      NULL,              "count",         "print only a count of matching lines per FILE" },    { OP_OP_STRING,  N_COLOUR, &colour_option,    "colour=option", "matched text colour option" },
237    { OP_OP_STRING, N_COLOUR, &colour_option,    "colour=option", "matched text colour option" },    { OP_NUMBER,     'C',      &both_context,     "context=number", "set number of context lines, before & after" },
238    { OP_STRING,    'D',      &DEE_option,       "devices=action","how to handle devices, FIFOs, and sockets" },    { OP_NODATA,     'c',      NULL,              "count",         "print only a count of matching lines per FILE" },
239    { OP_STRING,    'd',      &dee_option,       "directories=action", "how to handle directories" },    { OP_STRING,     'D',      &DEE_option,       "devices=action","how to handle devices, FIFOs, and sockets" },
240    { OP_PATLIST,   'e',      NULL,              "regex(p)",      "specify pattern (may be used more than once)" },    { OP_STRING,     'd',      &dee_option,       "directories=action", "how to handle directories" },
241    { OP_NODATA,    'F',      NULL,              "fixed_strings", "patterns are sets of newline-separated strings" },    { OP_PATLIST,    'e',      NULL,              "regex(p)=pattern", "specify pattern (may be used more than once)" },
242    { OP_STRING,    'f',      &pattern_filename, "file=path",     "read patterns from file" },    { OP_NODATA,     'F',      NULL,              "fixed-strings", "patterns are sets of newline-separated strings" },
243    { OP_NODATA,    'H',      NULL,              "with-filename", "force the prefixing filename on output" },    { OP_STRING,     'f',      &pattern_filename, "file=path",     "read patterns from file" },
244    { OP_NODATA,    'h',      NULL,              "no-filename",   "suppress the prefixing filename on output" },    { OP_NODATA,     N_FOFFSETS, NULL,            "file-offsets",  "output file offsets, not text" },
245    { OP_NODATA,    'i',      NULL,              "ignore-case",   "ignore case distinctions" },    { OP_NODATA,     'H',      NULL,              "with-filename", "force the prefixing filename on output" },
246    { OP_NODATA,    'l',      NULL,              "files-with-matches", "print only FILE names containing matches" },    { OP_NODATA,     'h',      NULL,              "no-filename",   "suppress the prefixing filename on output" },
247    { OP_NODATA,    'L',      NULL,              "files-without-match","print only FILE names not containing matches" },    { OP_NODATA,     'i',      NULL,              "ignore-case",   "ignore case distinctions" },
248    { OP_STRING,    N_LABEL,  &stdin_name,       "label=name",    "set name for standard input" },  #ifdef SUPPORT_PCREGREP_JIT
249    { OP_STRING,    N_LOCALE, &locale,           "locale=locale", "use the named locale" },    { OP_NODATA,     N_NOJIT,  NULL,              "no-jit",        "do not use just-in-time compiler optimization" },
250    { OP_NODATA,    'M',      NULL,              "multiline",     "run in multiline mode" },  #else
251    { OP_NODATA,    'n',      NULL,              "line-number",   "print line number with output lines" },    { OP_NODATA,     N_NOJIT,  NULL,              "no-jit",        "ignored: this pcregrep does not support JIT" },
252    { OP_NODATA,    'o',      NULL,              "only-matching", "show only the part of the line that matched" },  #endif
253    { OP_NODATA,    'q',      NULL,              "quiet",         "suppress output, just set return code" },    { OP_NODATA,     'l',      NULL,              "files-with-matches", "print only FILE names containing matches" },
254    { OP_NODATA,    'r',      NULL,              "recursive",     "recursively scan sub-directories" },    { OP_NODATA,     'L',      NULL,              "files-without-match","print only FILE names not containing matches" },
255    { OP_STRING,    N_EXCLUDE,&exclude_pattern,  "exclude=pattern","exclude matching files when recursing" },    { OP_STRING,     N_LABEL,  &stdin_name,       "label=name",    "set name for standard input" },
256    { OP_STRING,    N_INCLUDE,&include_pattern,  "include=pattern","include matching files when recursing" },    { OP_NODATA,     N_LBUFFER, NULL,             "line-buffered", "use line buffering" },
257      { OP_NODATA,     N_LOFFSETS, NULL,            "line-offsets",  "output line numbers and offsets, not text" },
258      { OP_STRING,     N_LOCALE, &locale,           "locale=locale", "use the named locale" },
259      { OP_LONGNUMBER, N_M_LIMIT, &match_limit,     "match-limit=number", "set PCRE match limit option" },
260      { OP_LONGNUMBER, N_M_LIMIT_REC, &match_limit_recursion, "recursion-limit=number", "set PCRE match recursion limit option" },
261      { OP_NODATA,     'M',      NULL,              "multiline",     "run in multiline mode" },
262      { OP_STRING,     'N',      &newline,          "newline=type",  "set newline type (CR, LF, CRLF, ANYCRLF or ANY)" },
263      { OP_NODATA,     'n',      NULL,              "line-number",   "print line number with output lines" },
264      { OP_OP_NUMBER,  'o',      &only_matching,    "only-matching=n", "show only the part of the line that matched" },
265      { OP_NODATA,     'q',      NULL,              "quiet",         "suppress output, just set return code" },
266      { OP_NODATA,     'r',      NULL,              "recursive",     "recursively scan sub-directories" },
267      { OP_STRING,     N_EXCLUDE,&exclude_pattern,  "exclude=pattern","exclude matching files when recursing" },
268      { OP_STRING,     N_INCLUDE,&include_pattern,  "include=pattern","include matching files when recursing" },
269      { OP_STRING,     N_EXCLUDE_DIR,&exclude_dir_pattern, "exclude-dir=pattern","exclude matching directories when recursing" },
270      { OP_STRING,     N_INCLUDE_DIR,&include_dir_pattern, "include-dir=pattern","include matching directories when recursing" },
271    
272      /* These two were accidentally implemented with underscores instead of
273      hyphens in the option names. As this was not discovered for several releases,
274      the incorrect versions are left in the table for compatibility. However, the
275      --help function misses out any option that has an underscore in its name. */
276    
277      { OP_STRING,    N_EXCLUDE_DIR,&exclude_dir_pattern, "exclude_dir=pattern","exclude matching directories when recursing" },
278      { OP_STRING,    N_INCLUDE_DIR,&include_dir_pattern, "include_dir=pattern","include matching directories when recursing" },
279    
280  #ifdef JFRIEDL_DEBUG  #ifdef JFRIEDL_DEBUG
281    { OP_OP_NUMBER, 'S',      &S_arg,            "jeffS",         "replace matched (sub)string with X" },    { OP_OP_NUMBER, 'S',      &S_arg,            "jeffS",         "replace matched (sub)string with X" },
282  #endif  #endif
# Line 210  static const char *prefix[] = { Line 300  static const char *prefix[] = {
300  static const char *suffix[] = {  static const char *suffix[] = {
301    "", "\\b", ")$",   ")$",   "\\E", "\\E\\b", "\\E)$",   "\\E)$" };    "", "\\b", ")$",   ")$",   "\\E", "\\E\\b", "\\E)$",   "\\E)$" };
302    
303    /* UTF-8 tables - used only when the newline setting is "any". */
304    
305    const int utf8_table3[] = { 0xff, 0x1f, 0x0f, 0x07, 0x03, 0x01};
306    
307    const char utf8_table4[] = {
308      1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
309      1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
310      2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,
311      3,3,3,3,3,3,3,3,4,4,4,4,5,5,5,5 };
312    
313    
314    
315    /*************************************************
316    *         Exit from the program                  *
317    *************************************************/
318    
319    /* If there has been a resource error, give a suitable message.
320    
321    Argument:  the return code
322    Returns:   does not return
323    */
324    
325    static void
326    pcregrep_exit(int rc)
327    {
328    if (resource_error)
329      {
330      fprintf(stderr, "pcregrep: Error %d, %d or %d means that a resource limit "
331        "was exceeded.\n", PCRE_ERROR_MATCHLIMIT, PCRE_ERROR_RECURSIONLIMIT,
332        PCRE_ERROR_JIT_STACKLIMIT);
333      fprintf(stderr, "pcregrep: Check your regex for nested unlimited loops.\n");
334      }
335    
336    exit(rc);
337    }
338    
339    
340  /*************************************************  /*************************************************
# Line 222  although at present the only ones are fo Line 347  although at present the only ones are fo
347    
348  /************* Directory scanning in Unix ***********/  /************* Directory scanning in Unix ***********/
349    
350  #if IS_UNIX  #if defined HAVE_SYS_STAT_H && defined HAVE_DIRENT_H && defined HAVE_SYS_TYPES_H
351  #include <sys/types.h>  #include <sys/types.h>
352  #include <sys/stat.h>  #include <sys/stat.h>
353  #include <dirent.h>  #include <dirent.h>
# Line 254  for (;;) Line 379  for (;;)
379    if (strcmp(dent->d_name, ".") != 0 && strcmp(dent->d_name, "..") != 0)    if (strcmp(dent->d_name, ".") != 0 && strcmp(dent->d_name, "..") != 0)
380      return dent->d_name;      return dent->d_name;
381    }    }
382  return NULL;   /* Keep compiler happy; never executed */  /* Control never reaches here */
383  }  }
384    
385  static void  static void
# Line 276  return (statbuf.st_mode & S_IFMT) == S_I Line 401  return (statbuf.st_mode & S_IFMT) == S_I
401  }  }
402    
403    
404  /************* Test stdout for being a terminal in Unix **********/  /************* Test for a terminal in Unix **********/
405    
406  static BOOL  static BOOL
407  is_stdout_tty(void)  is_stdout_tty(void)
# Line 284  is_stdout_tty(void) Line 409  is_stdout_tty(void)
409  return isatty(fileno(stdout));  return isatty(fileno(stdout));
410  }  }
411    
412    static BOOL
413    is_file_tty(FILE *f)
414    {
415    return isatty(fileno(f));
416    }
417    
418    
419  /************* Directory scanning in Win32 ***********/  /************* Directory scanning in Win32 ***********/
420    
421  /* 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
422  Lionel Fourquaux. David Burgess added a patch to define INVALID_FILE_ATTRIBUTES  Lionel Fourquaux. David Burgess added a patch to define INVALID_FILE_ATTRIBUTES
423  when it did not exist. */  when it did not exist. David Byron added a patch that moved the #include of
424    <windows.h> to before the INVALID_FILE_ATTRIBUTES definition rather than after.
425    The double test below stops gcc 4.4.4 grumbling that HAVE_WINDOWS_H is
426    undefined when it is indeed undefined. */
427    
428    #elif defined HAVE_WINDOWS_H && HAVE_WINDOWS_H
 #elif HAVE_WIN32API  
429    
430  #ifndef STRICT  #ifndef STRICT
431  # define STRICT  # define STRICT
# Line 300  when it did not exist. */ Line 433  when it did not exist. */
433  #ifndef WIN32_LEAN_AND_MEAN  #ifndef WIN32_LEAN_AND_MEAN
434  # define WIN32_LEAN_AND_MEAN  # define WIN32_LEAN_AND_MEAN
435  #endif  #endif
436    
437    #include <windows.h>
438    
439  #ifndef INVALID_FILE_ATTRIBUTES  #ifndef INVALID_FILE_ATTRIBUTES
440  #define INVALID_FILE_ATTRIBUTES 0xFFFFFFFF  #define INVALID_FILE_ATTRIBUTES 0xFFFFFFFF
441  #endif  #endif
442    
 #include <windows.h>  
   
443  typedef struct directory_type  typedef struct directory_type
444  {  {
445  HANDLE handle;  HANDLE handle;
# Line 335  dir = (directory_type *) malloc(sizeof(* Line 469  dir = (directory_type *) malloc(sizeof(*
469  if ((pattern == NULL) || (dir == NULL))  if ((pattern == NULL) || (dir == NULL))
470    {    {
471    fprintf(stderr, "pcregrep: malloc failed\n");    fprintf(stderr, "pcregrep: malloc failed\n");
472    exit(2);    pcregrep_exit(2);
473    }    }
474  memcpy(pattern, filename, len);  memcpy(pattern, filename, len);
475  memcpy(&(pattern[len]), "\\*", 3);  memcpy(&(pattern[len]), "\\*", 3);
# Line 390  regular if they are not directories. */ Line 524  regular if they are not directories. */
524    
525  int isregfile(char *filename)  int isregfile(char *filename)
526  {  {
527  return !isdirectory(filename)  return !isdirectory(filename);
528  }  }
529    
530    
531  /************* Test stdout for being a terminal in Win32 **********/  /************* Test for a terminal in Win32 **********/
532    
533  /* I don't know how to do this; assume never */  /* I don't know how to do this; assume never */
534    
535  static BOOL  static BOOL
536  is_stdout_tty(void)  is_stdout_tty(void)
537  {  {
538  FALSE;  return FALSE;
539    }
540    
541    static BOOL
542    is_file_tty(FILE *f)
543    {
544    return FALSE;
545  }  }
546    
547    
# Line 414  FALSE; Line 554  FALSE;
554  typedef void directory_type;  typedef void directory_type;
555    
556  int isdirectory(char *filename) { return 0; }  int isdirectory(char *filename) { return 0; }
557  directory_type * opendirectory(char *filename) {}  directory_type * opendirectory(char *filename) { return (directory_type*)0;}
558  char *readdirectory(directory_type *dir) {}  char *readdirectory(directory_type *dir) { return (char*)0;}
559  void closedirectory(directory_type *dir) {}  void closedirectory(directory_type *dir) {}
560    
561    
# Line 426  void closedirectory(directory_type *dir) Line 566  void closedirectory(directory_type *dir)
566  int isregfile(char *filename) { return 1; }  int isregfile(char *filename) { return 1; }
567    
568    
569  /************* Test stdout for being a terminal when we can't do it **********/  /************* Test for a terminal when we can't do it **********/
570    
571  static BOOL  static BOOL
572  is_stdout_tty(void)  is_stdout_tty(void)
# Line 434  is_stdout_tty(void) Line 574  is_stdout_tty(void)
574  return FALSE;  return FALSE;
575  }  }
576    
577    static BOOL
578    is_file_tty(FILE *f)
579    {
580    return FALSE;
581    }
582    
583  #endif  #endif
584    
585    
586    
587  #if ! HAVE_STRERROR  #ifndef HAVE_STRERROR
588  /*************************************************  /*************************************************
589  *     Provide strerror() for non-ANSI libraries  *  *     Provide strerror() for non-ANSI libraries  *
590  *************************************************/  *************************************************/
# Line 462  return sys_errlist[n]; Line 607  return sys_errlist[n];
607    
608    
609  /*************************************************  /*************************************************
610    *            Read one line of input              *
611    *************************************************/
612    
613    /* Normally, input is read using fread() into a large buffer, so many lines may
614    be read at once. However, doing this for tty input means that no output appears
615    until a lot of input has been typed. Instead, tty input is handled line by
616    line. We cannot use fgets() for this, because it does not stop at a binary
617    zero, and therefore there is no way of telling how many characters it has read,
618    because there may be binary zeros embedded in the data.
619    
620    Arguments:
621      buffer     the buffer to read into
622      length     the maximum number of characters to read
623      f          the file
624    
625    Returns:     the number of characters read, zero at end of file
626    */
627    
628    static int
629    read_one_line(char *buffer, int length, FILE *f)
630    {
631    int c;
632    int yield = 0;
633    while ((c = fgetc(f)) != EOF)
634      {
635      buffer[yield++] = c;
636      if (c == '\n' || yield >= length) break;
637      }
638    return yield;
639    }
640    
641    
642    
643    /*************************************************
644    *             Find end of line                   *
645    *************************************************/
646    
647    /* The length of the endline sequence that is found is set via lenptr. This may
648    be zero at the very end of the file if there is no line-ending sequence there.
649    
650    Arguments:
651      p         current position in line
652      endptr    end of available data
653      lenptr    where to put the length of the eol sequence
654    
655    Returns:    pointer after the last byte of the line,
656                including the newline byte(s)
657    */
658    
659    static char *
660    end_of_line(char *p, char *endptr, int *lenptr)
661    {
662    switch(endlinetype)
663      {
664      default:      /* Just in case */
665      case EL_LF:
666      while (p < endptr && *p != '\n') p++;
667      if (p < endptr)
668        {
669        *lenptr = 1;
670        return p + 1;
671        }
672      *lenptr = 0;
673      return endptr;
674    
675      case EL_CR:
676      while (p < endptr && *p != '\r') p++;
677      if (p < endptr)
678        {
679        *lenptr = 1;
680        return p + 1;
681        }
682      *lenptr = 0;
683      return endptr;
684    
685      case EL_CRLF:
686      for (;;)
687        {
688        while (p < endptr && *p != '\r') p++;
689        if (++p >= endptr)
690          {
691          *lenptr = 0;
692          return endptr;
693          }
694        if (*p == '\n')
695          {
696          *lenptr = 2;
697          return p + 1;
698          }
699        }
700      break;
701    
702      case EL_ANYCRLF:
703      while (p < endptr)
704        {
705        int extra = 0;
706        register int c = *((unsigned char *)p);
707    
708        if (utf8 && c >= 0xc0)
709          {
710          int gcii, gcss;
711          extra = utf8_table4[c & 0x3f];  /* Number of additional bytes */
712          gcss = 6*extra;
713          c = (c & utf8_table3[extra]) << gcss;
714          for (gcii = 1; gcii <= extra; gcii++)
715            {
716            gcss -= 6;
717            c |= (p[gcii] & 0x3f) << gcss;
718            }
719          }
720    
721        p += 1 + extra;
722    
723        switch (c)
724          {
725          case 0x0a:    /* LF */
726          *lenptr = 1;
727          return p;
728    
729          case 0x0d:    /* CR */
730          if (p < endptr && *p == 0x0a)
731            {
732            *lenptr = 2;
733            p++;
734            }
735          else *lenptr = 1;
736          return p;
737    
738          default:
739          break;
740          }
741        }   /* End of loop for ANYCRLF case */
742    
743      *lenptr = 0;  /* Must have hit the end */
744      return endptr;
745    
746      case EL_ANY:
747      while (p < endptr)
748        {
749        int extra = 0;
750        register int c = *((unsigned char *)p);
751    
752        if (utf8 && c >= 0xc0)
753          {
754          int gcii, gcss;
755          extra = utf8_table4[c & 0x3f];  /* Number of additional bytes */
756          gcss = 6*extra;
757          c = (c & utf8_table3[extra]) << gcss;
758          for (gcii = 1; gcii <= extra; gcii++)
759            {
760            gcss -= 6;
761            c |= (p[gcii] & 0x3f) << gcss;
762            }
763          }
764    
765        p += 1 + extra;
766    
767        switch (c)
768          {
769          case 0x0a:    /* LF */
770          case 0x0b:    /* VT */
771          case 0x0c:    /* FF */
772          *lenptr = 1;
773          return p;
774    
775          case 0x0d:    /* CR */
776          if (p < endptr && *p == 0x0a)
777            {
778            *lenptr = 2;
779            p++;
780            }
781          else *lenptr = 1;
782          return p;
783    
784          case 0x85:    /* NEL */
785          *lenptr = utf8? 2 : 1;
786          return p;
787    
788          case 0x2028:  /* LS */
789          case 0x2029:  /* PS */
790          *lenptr = 3;
791          return p;
792    
793          default:
794          break;
795          }
796        }   /* End of loop for ANY case */
797    
798      *lenptr = 0;  /* Must have hit the end */
799      return endptr;
800      }     /* End of overall switch */
801    }
802    
803    
804    
805    /*************************************************
806    *         Find start of previous line            *
807    *************************************************/
808    
809    /* This is called when looking back for before lines to print.
810    
811    Arguments:
812      p         start of the subsequent line
813      startptr  start of available data
814    
815    Returns:    pointer to the start of the previous line
816    */
817    
818    static char *
819    previous_line(char *p, char *startptr)
820    {
821    switch(endlinetype)
822      {
823      default:      /* Just in case */
824      case EL_LF:
825      p--;
826      while (p > startptr && p[-1] != '\n') p--;
827      return p;
828    
829      case EL_CR:
830      p--;
831      while (p > startptr && p[-1] != '\n') p--;
832      return p;
833    
834      case EL_CRLF:
835      for (;;)
836        {
837        p -= 2;
838        while (p > startptr && p[-1] != '\n') p--;
839        if (p <= startptr + 1 || p[-2] == '\r') return p;
840        }
841      return p;   /* But control should never get here */
842    
843      case EL_ANY:
844      case EL_ANYCRLF:
845      if (*(--p) == '\n' && p > startptr && p[-1] == '\r') p--;
846      if (utf8) while ((*p & 0xc0) == 0x80) p--;
847    
848      while (p > startptr)
849        {
850        register int c;
851        char *pp = p - 1;
852    
853        if (utf8)
854          {
855          int extra = 0;
856          while ((*pp & 0xc0) == 0x80) pp--;
857          c = *((unsigned char *)pp);
858          if (c >= 0xc0)
859            {
860            int gcii, gcss;
861            extra = utf8_table4[c & 0x3f];  /* Number of additional bytes */
862            gcss = 6*extra;
863            c = (c & utf8_table3[extra]) << gcss;
864            for (gcii = 1; gcii <= extra; gcii++)
865              {
866              gcss -= 6;
867              c |= (pp[gcii] & 0x3f) << gcss;
868              }
869            }
870          }
871        else c = *((unsigned char *)pp);
872    
873        if (endlinetype == EL_ANYCRLF) switch (c)
874          {
875          case 0x0a:    /* LF */
876          case 0x0d:    /* CR */
877          return p;
878    
879          default:
880          break;
881          }
882    
883        else switch (c)
884          {
885          case 0x0a:    /* LF */
886          case 0x0b:    /* VT */
887          case 0x0c:    /* FF */
888          case 0x0d:    /* CR */
889          case 0x85:    /* NEL */
890          case 0x2028:  /* LS */
891          case 0x2029:  /* PS */
892          return p;
893    
894          default:
895          break;
896          }
897    
898        p = pp;  /* Back one character */
899        }        /* End of loop for ANY case */
900    
901      return startptr;  /* Hit start of data */
902      }     /* End of overall switch */
903    }
904    
905    
906    
907    
908    
909    /*************************************************
910  *       Print the previous "after" lines         *  *       Print the previous "after" lines         *
911  *************************************************/  *************************************************/
912    
# Line 486  if (after_context > 0 && lastmatchnumber Line 931  if (after_context > 0 && lastmatchnumber
931    int count = 0;    int count = 0;
932    while (lastmatchrestart < endptr && count++ < after_context)    while (lastmatchrestart < endptr && count++ < after_context)
933      {      {
934        int ellength;
935      char *pp = lastmatchrestart;      char *pp = lastmatchrestart;
936      if (printname != NULL) fprintf(stdout, "%s-", printname);      if (printname != NULL) fprintf(stdout, "%s-", printname);
937      if (number) fprintf(stdout, "%d-", lastmatchnumber++);      if (number) fprintf(stdout, "%d-", lastmatchnumber++);
938      while (*pp != '\n') pp++;      pp = end_of_line(pp, endptr, &ellength);
939      fwrite(lastmatchrestart, 1, pp - lastmatchrestart + 1, stdout);      FWRITE(lastmatchrestart, 1, pp - lastmatchrestart, stdout);
940      lastmatchrestart = pp + 1;      lastmatchrestart = pp;
941      }      }
942    hyphenpending = TRUE;    hyphenpending = TRUE;
943    }    }
# Line 500  if (after_context > 0 && lastmatchnumber Line 946  if (after_context > 0 && lastmatchnumber
946    
947    
948  /*************************************************  /*************************************************
949    *   Apply patterns to subject till one matches   *
950    *************************************************/
951    
952    /* This function is called to run through all patterns, looking for a match. It
953    is used multiple times for the same subject when colouring is enabled, in order
954    to find all possible matches.
955    
956    Arguments:
957      matchptr     the start of the subject
958      length       the length of the subject to match
959      startoffset  where to start matching
960      offsets      the offets vector to fill in
961      mrc          address of where to put the result of pcre_exec()
962    
963    Returns:      TRUE if there was a match
964                  FALSE if there was no match
965                  invert if there was a non-fatal error
966    */
967    
968    static BOOL
969    match_patterns(char *matchptr, size_t length, int startoffset, int *offsets,
970      int *mrc)
971    {
972    int i;
973    size_t slen = length;
974    const char *msg = "this text:\n\n";
975    if (slen > 200)
976      {
977      slen = 200;
978      msg = "text that starts:\n\n";
979      }
980    for (i = 0; i < pattern_count; i++)
981      {
982      *mrc = pcre_exec(pattern_list[i], hints_list[i], matchptr, (int)length,
983        startoffset, PCRE_NOTEMPTY, offsets, OFFSET_SIZE);
984      if (*mrc >= 0) return TRUE;
985      if (*mrc == PCRE_ERROR_NOMATCH) continue;
986      fprintf(stderr, "pcregrep: pcre_exec() gave error %d while matching ", *mrc);
987      if (pattern_count > 1) fprintf(stderr, "pattern number %d to ", i+1);
988      fprintf(stderr, "%s", msg);
989      FWRITE(matchptr, 1, slen, stderr);   /* In case binary zero included */
990      fprintf(stderr, "\n\n");
991      if (*mrc == PCRE_ERROR_MATCHLIMIT || *mrc == PCRE_ERROR_RECURSIONLIMIT ||
992          *mrc == PCRE_ERROR_JIT_STACKLIMIT)
993        resource_error = TRUE;
994      if (error_count++ > 20)
995        {
996        fprintf(stderr, "pcregrep: Too many errors - abandoned.\n");
997        pcregrep_exit(2);
998        }
999      return invert;    /* No more matching; don't show the line again */
1000      }
1001    
1002    return FALSE;  /* No match, no errors */
1003    }
1004    
1005    
1006    
1007    /*************************************************
1008  *            Grep an individual file             *  *            Grep an individual file             *
1009  *************************************************/  *************************************************/
1010    
1011  /* This is called from grep_or_recurse() below. It uses a buffer that is three  /* This is called from grep_or_recurse() below. It uses a buffer that is three
1012  times the value of MBUFTHIRD. The matching point is never allowed to stray into  times the value of bufthird. The matching point is never allowed to stray into
1013  the top third of the buffer, thus keeping more of the file available for  the top third of the buffer, thus keeping more of the file available for
1014  context printing or for multiline scanning. For large files, the pointer will  context printing or for multiline scanning. For large files, the pointer will
1015  be in the middle third most of the time, so the bottom third is available for  be in the middle third most of the time, so the bottom third is available for
1016  "before" context printing.  "before" context printing.
1017    
1018  Arguments:  Arguments:
1019    in           the fopened FILE stream    handle       the fopened FILE stream for a normal file
1020                   the gzFile pointer when reading is via libz
1021                   the BZFILE pointer when reading is via libbz2
1022      frtype       FR_PLAIN, FR_LIBZ, or FR_LIBBZ2
1023      filename     the file name or NULL (for errors)
1024    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
1025                 or NULL if the file name is not to be printed                 or NULL if the file name is not to be printed
1026                 it cannot be NULL if filenames[_nomatch]_only is set                 it cannot be NULL if filenames[_nomatch]_only is set
1027    
1028  Returns:       0 if there was at least one match  Returns:       0 if there was at least one match
1029                 1 otherwise (no matches)                 1 otherwise (no matches)
1030                   2 if an overlong line is encountered
1031                   3 if there is a read error on a .bz2 file
1032  */  */
1033    
1034  static int  static int
1035  pcregrep(FILE *in, char *printname)  pcregrep(void *handle, int frtype, char *filename, char *printname)
1036  {  {
1037  int rc = 1;  int rc = 1;
1038  int linenumber = 1;  int linenumber = 1;
1039  int lastmatchnumber = 0;  int lastmatchnumber = 0;
1040  int count = 0;  int count = 0;
1041  int offsets[99];  int filepos = 0;
1042    int offsets[OFFSET_SIZE];
1043  char *lastmatchrestart = NULL;  char *lastmatchrestart = NULL;
1044  char buffer[3*MBUFTHIRD];  char *ptr = main_buffer;
 char *ptr = buffer;  
1045  char *endptr;  char *endptr;
1046  size_t bufflength;  size_t bufflength;
1047  BOOL endhyphenpending = FALSE;  BOOL endhyphenpending = FALSE;
1048    BOOL input_line_buffered = line_buffered;
1049    FILE *in = NULL;                    /* Ensure initialized */
1050    
1051    #ifdef SUPPORT_LIBZ
1052    gzFile ingz = NULL;
1053    #endif
1054    
1055    #ifdef SUPPORT_LIBBZ2
1056    BZFILE *inbz2 = NULL;
1057    #endif
1058    
 /* Do the first read into the start of the buffer and set up the pointer to  
 end of what we have. */  
1059    
1060  bufflength = fread(buffer, 1, 3*MBUFTHIRD, in);  /* Do the first read into the start of the buffer and set up the pointer to end
1061  endptr = buffer + bufflength;  of what we have. In the case of libz, a non-zipped .gz file will be read as a
1062    plain file. However, if a .bz2 file isn't actually bzipped, the first read will
1063    fail. */
1064    
1065    #ifdef SUPPORT_LIBZ
1066    if (frtype == FR_LIBZ)
1067      {
1068      ingz = (gzFile)handle;
1069      bufflength = gzread (ingz, main_buffer, bufsize);
1070      }
1071    else
1072    #endif
1073    
1074    #ifdef SUPPORT_LIBBZ2
1075    if (frtype == FR_LIBBZ2)
1076      {
1077      inbz2 = (BZFILE *)handle;
1078      bufflength = BZ2_bzread(inbz2, main_buffer, bufsize);
1079      if ((int)bufflength < 0) return 2;   /* Gotcha: bufflength is size_t; */
1080      }                                    /* without the cast it is unsigned. */
1081    else
1082    #endif
1083    
1084      {
1085      in = (FILE *)handle;
1086      if (is_file_tty(in)) input_line_buffered = TRUE;
1087      bufflength = input_line_buffered?
1088        read_one_line(main_buffer, bufsize, in) :
1089        fread(main_buffer, 1, bufsize, in);
1090      }
1091    
1092    endptr = main_buffer + bufflength;
1093    
1094  /* 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
1095  files, endptr will be at the end of the buffer when we are in the middle of the  files, endptr will be at the end of the buffer when we are in the middle of the
# Line 548  way, the buffer is shifted left and re-f Line 1098  way, the buffer is shifted left and re-f
1098    
1099  while (ptr < endptr)  while (ptr < endptr)
1100    {    {
1101    int i;    int endlinelength;
1102    int mrc = 0;    int mrc = 0;
1103    BOOL match = FALSE;    int startoffset = 0;
1104      BOOL match;
1105      char *matchptr = ptr;
1106    char *t = ptr;    char *t = ptr;
1107    size_t length, linelength;    size_t length, linelength;
1108    
1109    /* At this point, ptr is at the start of a line. We need to find the length    /* At this point, ptr is at the start of a line. We need to find the length
1110    of the subject string to pass to pcre_exec(). In multiline mode, it is the    of the subject string to pass to pcre_exec(). In multiline mode, it is the
1111    length remainder of the data in the buffer. Otherwise, it is the length of    length remainder of the data in the buffer. Otherwise, it is the length of
1112    the next line. After matching, we always advance by the length of the next    the next line, excluding the terminating newline. After matching, we always
1113    line. In multiline mode the PCRE_FIRSTLINE option is used for compiling, so    advance by the length of the next line. In multiline mode the PCRE_FIRSTLINE
1114    that any match is constrained to be in the first line. */    option is used for compiling, so that any match is constrained to be in the
1115      first line. */
1116    linelength = 0;  
1117    while (t < endptr && *t++ != '\n') linelength++;    t = end_of_line(t, endptr, &endlinelength);
1118    length = multiline? endptr - ptr : linelength;    linelength = t - ptr - endlinelength;
1119      length = multiline? (size_t)(endptr - ptr) : linelength;
1120    /* Run through all the patterns until one matches. Note that we don't include  
1121    the final newline in the subject string. */    /* Check to see if the line we are looking at extends right to the very end
1122      of the buffer without a line terminator. This means the line is too long to
1123    for (i = 0; i < pattern_count; i++)    handle. */
1124      {  
1125      mrc = pcre_exec(pattern_list[i], hints_list[i], ptr, length, 0, 0,    if (endlinelength == 0 && t == main_buffer + bufsize)
1126        offsets, 99);      {
1127      if (mrc >= 0) { match = TRUE; break; }      fprintf(stderr, "pcregrep: line %d%s%s is too long for the internal buffer\n"
1128      if (mrc != PCRE_ERROR_NOMATCH)                      "pcregrep: check the --buffer-size option\n",
1129        {                      linenumber,
1130        fprintf(stderr, "pcregrep: pcre_exec() error %d while matching ", mrc);                      (filename == NULL)? "" : " of file ",
1131        if (pattern_count > 1) fprintf(stderr, "pattern number %d to ", i+1);                      (filename == NULL)? "" : filename);
1132        fprintf(stderr, "this line:\n");      return 2;
       fwrite(ptr, 1, linelength, stderr);   /* In case binary zero included */  
       fprintf(stderr, "\n");  
       if (error_count == 0 &&  
           (mrc == PCRE_ERROR_MATCHLIMIT || mrc == PCRE_ERROR_RECURSIONLIMIT))  
         {  
         fprintf(stderr, "pcregrep: error %d means that a resource limit "  
           "was exceeded\n", mrc);  
         fprintf(stderr, "pcregrep: check your regex for nested unlimited loops\n");  
         }  
       if (error_count++ > 20)  
         {  
         fprintf(stderr, "pcregrep: too many errors - abandoned\n");  
         exit(2);  
         }  
       match = invert;    /* No more matching; don't show the line again */  
       break;  
       }  
1133      }      }
1134    
1135      /* Extra processing for Jeffrey Friedl's debugging. */
1136    
1137    #ifdef JFRIEDL_DEBUG
1138      if (jfriedl_XT || jfriedl_XR)
1139      {
1140          #include <sys/time.h>
1141          #include <time.h>
1142          struct timeval start_time, end_time;
1143          struct timezone dummy;
1144          int i;
1145    
1146          if (jfriedl_XT)
1147          {
1148              unsigned long newlen = length * jfriedl_XT + strlen(jfriedl_prefix) + strlen(jfriedl_postfix);
1149              const char *orig = ptr;
1150              ptr = malloc(newlen + 1);
1151              if (!ptr) {
1152                      printf("out of memory");
1153                      pcregrep_exit(2);
1154              }
1155              endptr = ptr;
1156              strcpy(endptr, jfriedl_prefix); endptr += strlen(jfriedl_prefix);
1157              for (i = 0; i < jfriedl_XT; i++) {
1158                      strncpy(endptr, orig,  length);
1159                      endptr += length;
1160              }
1161              strcpy(endptr, jfriedl_postfix); endptr += strlen(jfriedl_postfix);
1162              length = newlen;
1163          }
1164    
1165          if (gettimeofday(&start_time, &dummy) != 0)
1166                  perror("bad gettimeofday");
1167    
1168    
1169          for (i = 0; i < jfriedl_XR; i++)
1170              match = (pcre_exec(pattern_list[0], hints_list[0], ptr, length, 0,
1171                  PCRE_NOTEMPTY, offsets, OFFSET_SIZE) >= 0);
1172    
1173          if (gettimeofday(&end_time, &dummy) != 0)
1174                  perror("bad gettimeofday");
1175    
1176          double delta = ((end_time.tv_sec + (end_time.tv_usec / 1000000.0))
1177                          -
1178                          (start_time.tv_sec + (start_time.tv_usec / 1000000.0)));
1179    
1180          printf("%s TIMER[%.4f]\n", match ? "MATCH" : "FAIL", delta);
1181          return 0;
1182      }
1183    #endif
1184    
1185      /* We come back here after a match when the -o option (only_matching) is set,
1186      in order to find any further matches in the same line. */
1187    
1188      ONLY_MATCHING_RESTART:
1189    
1190      /* Run through all the patterns until one matches or there is an error other
1191      than NOMATCH. This code is in a subroutine so that it can be re-used for
1192      finding subsequent matches when colouring matched lines. */
1193    
1194      match = match_patterns(matchptr, length, startoffset, offsets, &mrc);
1195    
1196    /* If it's a match or a not-match (as required), do what's wanted. */    /* If it's a match or a not-match (as required), do what's wanted. */
1197    
1198    if (match != invert)    if (match != invert)
# Line 614  while (ptr < endptr) Line 1210  while (ptr < endptr)
1210      /* If all we want is a file name, there is no need to scan any more lines      /* If all we want is a file name, there is no need to scan any more lines
1211      in the file. */      in the file. */
1212    
1213      else if (filenames == FN_ONLY)      else if (filenames == FN_MATCH_ONLY)
1214        {        {
1215        fprintf(stdout, "%s\n", printname);        fprintf(stdout, "%s\n", printname);
1216        return 0;        return 0;
# Line 624  while (ptr < endptr) Line 1220  while (ptr < endptr)
1220    
1221      else if (quiet) return 0;      else if (quiet) return 0;
1222    
1223      /* The --only-matching option prints just the substring that matched, and      /* The --only-matching option prints just the substring that matched, or a
1224      does not pring any context. */      captured portion of it, as long as this string is not empty, and the
1225        --file-offsets and --line-offsets options output offsets for the matching
1226        substring (they both force --only-matching = 0). None of these options
1227        prints any context. Afterwards, adjust the start and then jump back to look
1228        for further matches in the same line. If we are in invert mode, however,
1229        nothing is printed and we do not restart - this could still be useful
1230        because the return code is set. */
1231    
1232      else if (only_matching)      else if (only_matching >= 0)
1233        {        {
1234        if (printname != NULL) fprintf(stdout, "%s:", printname);        if (!invert)
1235        if (number) fprintf(stdout, "%d:", linenumber);          {
1236        fwrite(ptr + offsets[0], 1, offsets[1] - offsets[0], stdout);          if (printname != NULL) fprintf(stdout, "%s:", printname);
1237        fprintf(stdout, "\n");          if (number) fprintf(stdout, "%d:", linenumber);
1238            if (line_offsets)
1239              fprintf(stdout, "%d,%d\n", (int)(matchptr + offsets[0] - ptr),
1240                offsets[1] - offsets[0]);
1241            else if (file_offsets)
1242              fprintf(stdout, "%d,%d\n",
1243                (int)(filepos + matchptr + offsets[0] - ptr),
1244                offsets[1] - offsets[0]);
1245            else if (only_matching < mrc)
1246              {
1247              int plen = offsets[2*only_matching + 1] - offsets[2*only_matching];
1248              if (plen > 0)
1249                {
1250                if (do_colour) fprintf(stdout, "%c[%sm", 0x1b, colour_string);
1251                FWRITE(matchptr + offsets[only_matching*2], 1, plen, stdout);
1252                if (do_colour) fprintf(stdout, "%c[00m", 0x1b);
1253                fprintf(stdout, "\n");
1254                }
1255              }
1256            else if (printname != NULL || number) fprintf(stdout, "\n");
1257            match = FALSE;
1258            if (line_buffered) fflush(stdout);
1259            rc = 0;                      /* Had some success */
1260            startoffset = offsets[1];    /* Restart after the match */
1261            goto ONLY_MATCHING_RESTART;
1262            }
1263        }        }
1264    
1265      /* This is the default case when none of the above options is set. We print      /* This is the default case when none of the above options is set. We print
# Line 646  while (ptr < endptr) Line 1273  while (ptr < endptr)
1273    
1274        if (after_context > 0 && lastmatchnumber > 0)        if (after_context > 0 && lastmatchnumber > 0)
1275          {          {
1276            int ellength;
1277          int linecount = 0;          int linecount = 0;
1278          char *p = lastmatchrestart;          char *p = lastmatchrestart;
1279    
1280          while (p < ptr && linecount < after_context)          while (p < ptr && linecount < after_context)
1281            {            {
1282            while (*p != '\n') p++;            p = end_of_line(p, ptr, &ellength);
           p++;  
1283            linecount++;            linecount++;
1284            }            }
1285    
# Line 665  while (ptr < endptr) Line 1292  while (ptr < endptr)
1292            char *pp = lastmatchrestart;            char *pp = lastmatchrestart;
1293            if (printname != NULL) fprintf(stdout, "%s-", printname);            if (printname != NULL) fprintf(stdout, "%s-", printname);
1294            if (number) fprintf(stdout, "%d-", lastmatchnumber++);            if (number) fprintf(stdout, "%d-", lastmatchnumber++);
1295            while (*pp != '\n') pp++;            pp = end_of_line(pp, endptr, &ellength);
1296            fwrite(lastmatchrestart, 1, pp - lastmatchrestart + 1, stdout);            FWRITE(lastmatchrestart, 1, pp - lastmatchrestart, stdout);
1297            lastmatchrestart = pp + 1;            lastmatchrestart = pp;
1298            }            }
1299          if (lastmatchrestart != ptr) hyphenpending = TRUE;          if (lastmatchrestart != ptr) hyphenpending = TRUE;
1300          }          }
# Line 689  while (ptr < endptr) Line 1316  while (ptr < endptr)
1316          int linecount = 0;          int linecount = 0;
1317          char *p = ptr;          char *p = ptr;
1318    
1319          while (p > buffer && (lastmatchnumber == 0 || p > lastmatchrestart) &&          while (p > main_buffer && (lastmatchnumber == 0 || p > lastmatchrestart) &&
1320                 linecount < before_context)                 linecount < before_context)
1321            {            {
1322            linecount++;            linecount++;
1323            p--;            p = previous_line(p, main_buffer);
           while (p > buffer && p[-1] != '\n') p--;  
1324            }            }
1325    
1326          if (lastmatchnumber > 0 && p > lastmatchrestart && !hyphenprinted)          if (lastmatchnumber > 0 && p > lastmatchrestart && !hyphenprinted)
# Line 702  while (ptr < endptr) Line 1328  while (ptr < endptr)
1328    
1329          while (p < ptr)          while (p < ptr)
1330            {            {
1331              int ellength;
1332            char *pp = p;            char *pp = p;
1333            if (printname != NULL) fprintf(stdout, "%s-", printname);            if (printname != NULL) fprintf(stdout, "%s-", printname);
1334            if (number) fprintf(stdout, "%d-", linenumber - linecount--);            if (number) fprintf(stdout, "%d-", linenumber - linecount--);
1335            while (*pp != '\n') pp++;            pp = end_of_line(pp, endptr, &ellength);
1336            fwrite(p, 1, pp - p + 1, stdout);   /* In case binary zero */            FWRITE(p, 1, pp - p, stdout);
1337            p = pp + 1;            p = pp;
1338            }            }
1339          }          }
1340    
# Line 722  while (ptr < endptr) Line 1349  while (ptr < endptr)
1349    
1350        /* 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
1351        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
1352        line number appropriately. Because the PCRE_FIRSTLINE option is set, the        line number appropriately, but only when there actually was a match
1353        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
1354          the match will always be before the first newline sequence. */
1355    
1356        if (multiline)        if (multiline & !invert)
1357          {          {
1358          char *endmatch = ptr + offsets[1];          char *endmatch = ptr + offsets[1];
1359          t = ptr;          t = ptr;
1360          while (t < endmatch) { if (*t++ == '\n') linenumber++; }          while (t < endmatch)
1361          while (endmatch < endptr && *endmatch != '\n') endmatch++;            {
1362          linelength = endmatch - ptr;            t = end_of_line(t, endptr, &endlinelength);
1363              if (t < endmatch) linenumber++; else break;
1364              }
1365            linelength = t - ptr - endlinelength;
1366          }          }
1367    
1368        /*** NOTE: Use only fwrite() to output the data line, so that binary        /*** NOTE: Use only fwrite() to output the data line, so that binary
# Line 746  while (ptr < endptr) Line 1377  while (ptr < endptr)
1377          {          {
1378          int first = S_arg * 2;          int first = S_arg * 2;
1379          int last  = first + 1;          int last  = first + 1;
1380          fwrite(ptr, 1, offsets[first], stdout);          FWRITE(ptr, 1, offsets[first], stdout);
1381          fprintf(stdout, "X");          fprintf(stdout, "X");
1382          fwrite(ptr + offsets[last], 1, linelength - offsets[last], stdout);          FWRITE(ptr + offsets[last], 1, linelength - offsets[last], stdout);
1383          }          }
1384        else        else
1385  #endif  #endif
1386    
1387        /* We have to split the line(s) up if colouring. */        /* We have to split the line(s) up if colouring, and search for further
1388          matches, but not of course if the line is a non-match. */
1389    
1390        if (do_colour)        if (do_colour && !invert)
1391          {          {
1392          fwrite(ptr, 1, offsets[0], stdout);          int plength;
1393            FWRITE(ptr, 1, offsets[0], stdout);
1394          fprintf(stdout, "%c[%sm", 0x1b, colour_string);          fprintf(stdout, "%c[%sm", 0x1b, colour_string);
1395          fwrite(ptr + offsets[0], 1, offsets[1] - offsets[0], stdout);          FWRITE(ptr + offsets[0], 1, offsets[1] - offsets[0], stdout);
1396          fprintf(stdout, "%c[00m", 0x1b);          fprintf(stdout, "%c[00m", 0x1b);
1397          fwrite(ptr + offsets[1], 1, linelength - offsets[1], stdout);          for (;;)
1398              {
1399              startoffset = offsets[1];
1400              if (startoffset >= (int)linelength + endlinelength ||
1401                  !match_patterns(matchptr, length, startoffset, offsets, &mrc))
1402                break;
1403              FWRITE(matchptr + startoffset, 1, offsets[0] - startoffset, stdout);
1404              fprintf(stdout, "%c[%sm", 0x1b, colour_string);
1405              FWRITE(matchptr + offsets[0], 1, offsets[1] - offsets[0], stdout);
1406              fprintf(stdout, "%c[00m", 0x1b);
1407              }
1408    
1409            /* In multiline mode, we may have already printed the complete line
1410            and its line-ending characters (if they matched the pattern), so there
1411            may be no more to print. */
1412    
1413            plength = (int)((linelength + endlinelength) - startoffset);
1414            if (plength > 0) FWRITE(ptr + startoffset, 1, plength, stdout);
1415          }          }
       else fwrite(ptr, 1, linelength, stdout);  
1416    
1417        fprintf(stdout, "\n");        /* Not colouring; no need to search for further matches */
1418    
1419          else FWRITE(ptr, 1, linelength + endlinelength, stdout);
1420        }        }
1421    
1422      /* End of doing what has to be done for a match */      /* End of doing what has to be done for a match. If --line-buffered was
1423        given, flush the output. */
1424    
1425        if (line_buffered) fflush(stdout);
1426      rc = 0;    /* Had some success */      rc = 0;    /* Had some success */
1427    
1428      /* Remember where the last match happened for after_context. We remember      /* Remember where the last match happened for after_context. We remember
1429      where we are about to restart, and that line's number. */      where we are about to restart, and that line's number. */
1430    
1431      lastmatchrestart = ptr + linelength + 1;      lastmatchrestart = ptr + linelength + endlinelength;
1432      lastmatchnumber = linenumber + 1;      lastmatchnumber = linenumber + 1;
1433      }      }
1434    
1435    /* Advance to after the newline and increment the line number. */    /* For a match in multiline inverted mode (which of course did not cause
1436      anything to be printed), we have to move on to the end of the match before
1437      proceeding. */
1438    
1439      if (multiline && invert && match)
1440        {
1441        int ellength;
1442        char *endmatch = ptr + offsets[1];
1443        t = ptr;
1444        while (t < endmatch)
1445          {
1446          t = end_of_line(t, endptr, &ellength);
1447          if (t <= endmatch) linenumber++; else break;
1448          }
1449        endmatch = end_of_line(endmatch, endptr, &ellength);
1450        linelength = endmatch - ptr - ellength;
1451        }
1452    
1453      /* Advance to after the newline and increment the line number. The file
1454      offset to the current line is maintained in filepos. */
1455    
1456    ptr += linelength + 1;    ptr += linelength + endlinelength;
1457      filepos += (int)(linelength + endlinelength);
1458    linenumber++;    linenumber++;
1459    
1460      /* If input is line buffered, and the buffer is not yet full, read another
1461      line and add it into the buffer. */
1462    
1463      if (input_line_buffered && bufflength < (size_t)bufsize)
1464        {
1465        int add = read_one_line(ptr, bufsize - (int)(ptr - main_buffer), in);
1466        bufflength += add;
1467        endptr += add;
1468        }
1469    
1470    /* 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
1471    the current point is in the top 1/3 of the buffer, slide the buffer down by    the current point is in the top 1/3 of the buffer, slide the buffer down by
1472    1/3 and refill it. Before we do this, if some unprinted "after" lines are    1/3 and refill it. Before we do this, if some unprinted "after" lines are
1473    about to be lost, print them. */    about to be lost, print them. */
1474    
1475    if (bufflength >= sizeof(buffer) && ptr > buffer + 2*MBUFTHIRD)    if (bufflength >= (size_t)bufsize && ptr > main_buffer + 2*bufthird)
1476      {      {
1477      if (after_context > 0 &&      if (after_context > 0 &&
1478          lastmatchnumber > 0 &&          lastmatchnumber > 0 &&
1479          lastmatchrestart < buffer + MBUFTHIRD)          lastmatchrestart < main_buffer + bufthird)
1480        {        {
1481        do_after_lines(lastmatchnumber, lastmatchrestart, endptr, printname);        do_after_lines(lastmatchnumber, lastmatchrestart, endptr, printname);
1482        lastmatchnumber = 0;        lastmatchnumber = 0;
# Line 801  while (ptr < endptr) Line 1484  while (ptr < endptr)
1484    
1485      /* Now do the shuffle */      /* Now do the shuffle */
1486    
1487      memmove(buffer, buffer + MBUFTHIRD, 2*MBUFTHIRD);      memmove(main_buffer, main_buffer + bufthird, 2*bufthird);
1488      ptr -= MBUFTHIRD;      ptr -= bufthird;
1489      bufflength = 2*MBUFTHIRD + fread(buffer + 2*MBUFTHIRD, 1, MBUFTHIRD, in);  
1490      endptr = buffer + bufflength;  #ifdef SUPPORT_LIBZ
1491        if (frtype == FR_LIBZ)
1492          bufflength = 2*bufthird +
1493            gzread (ingz, main_buffer + 2*bufthird, bufthird);
1494        else
1495    #endif
1496    
1497    #ifdef SUPPORT_LIBBZ2
1498        if (frtype == FR_LIBBZ2)
1499          bufflength = 2*bufthird +
1500            BZ2_bzread(inbz2, main_buffer + 2*bufthird, bufthird);
1501        else
1502    #endif
1503    
1504        bufflength = 2*bufthird +
1505          (input_line_buffered?
1506           read_one_line(main_buffer + 2*bufthird, bufthird, in) :
1507           fread(main_buffer + 2*bufthird, 1, bufthird, in));
1508        endptr = main_buffer + bufflength;
1509    
1510      /* Adjust any last match point */      /* Adjust any last match point */
1511    
1512      if (lastmatchnumber > 0) lastmatchrestart -= MBUFTHIRD;      if (lastmatchnumber > 0) lastmatchrestart -= bufthird;
1513      }      }
1514    }     /* Loop through the whole file */    }     /* Loop through the whole file */
1515    
1516  /* 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
1517  hyphenpending if it prints something. */  hyphenpending if it prints something. */
1518    
1519  if (!only_matching && !count_only)  if (only_matching < 0 && !count_only)
1520    {    {
1521    do_after_lines(lastmatchnumber, lastmatchrestart, endptr, printname);    do_after_lines(lastmatchnumber, lastmatchrestart, endptr, printname);
1522    hyphenpending |= endhyphenpending;    hyphenpending |= endhyphenpending;
# Line 834  if (filenames == FN_NOMATCH_ONLY) Line 1535  if (filenames == FN_NOMATCH_ONLY)
1535    
1536  if (count_only)  if (count_only)
1537    {    {
1538    if (printname != NULL) fprintf(stdout, "%s:", printname);    if (count > 0 || !omit_zero_count)
1539    fprintf(stdout, "%d\n", count);      {
1540        if (printname != NULL && filenames != FN_NONE)
1541          fprintf(stdout, "%s:", printname);
1542        fprintf(stdout, "%d\n", count);
1543        }
1544    }    }
1545    
1546  return rc;  return rc;
# Line 867  grep_or_recurse(char *pathname, BOOL dir Line 1572  grep_or_recurse(char *pathname, BOOL dir
1572  {  {
1573  int rc = 1;  int rc = 1;
1574  int sep;  int sep;
1575  FILE *in;  int frtype;
1576    void *handle;
1577    FILE *in = NULL;           /* Ensure initialized */
1578    
1579    #ifdef SUPPORT_LIBZ
1580    gzFile ingz = NULL;
1581    #endif
1582    
1583    #ifdef SUPPORT_LIBBZ2
1584    BZFILE *inbz2 = NULL;
1585    #endif
1586    
1587    #if defined SUPPORT_LIBZ || defined SUPPORT_LIBZ2
1588    int pathlen;
1589    #endif
1590    
1591  /* If the file name is "-" we scan stdin */  /* If the file name is "-" we scan stdin */
1592    
1593  if (strcmp(pathname, "-") == 0)  if (strcmp(pathname, "-") == 0)
1594    {    {
1595    return pcregrep(stdin,    return pcregrep(stdin, FR_PLAIN, stdin_name,
1596      (filenames > FN_DEFAULT || (filenames == FN_DEFAULT && !only_one_at_top))?      (filenames > FN_DEFAULT || (filenames == FN_DEFAULT && !only_one_at_top))?
1597        stdin_name : NULL);        stdin_name : NULL);
1598    }    }
1599    
   
1600  /* If the file is a directory, skip if skipping or if we are recursing, scan  /* If the file is a directory, skip if skipping or if we are recursing, scan
1601  each file within it, subject to any include or exclude patterns that were set.  each file and directory within it, subject to any include or exclude patterns
1602  The scanning code is localized so it can be made system-specific. */  that were set. The scanning code is localized so it can be made
1603    system-specific. */
1604    
1605  if ((sep = isdirectory(pathname)) != 0)  if ((sep = isdirectory(pathname)) != 0)
1606    {    {
# Line 902  if ((sep = isdirectory(pathname)) != 0) Line 1621  if ((sep = isdirectory(pathname)) != 0)
1621    
1622      while ((nextfile = readdirectory(dir)) != NULL)      while ((nextfile = readdirectory(dir)) != NULL)
1623        {        {
1624        int frc, blen;        int frc, nflen;
1625        sprintf(buffer, "%.512s%c%.128s", pathname, sep, nextfile);        sprintf(buffer, "%.512s%c%.128s", pathname, sep, nextfile);
1626        blen = strlen(buffer);        nflen = (int)(strlen(nextfile));
1627    
1628        if (exclude_compiled != NULL &&        if (isdirectory(buffer))
1629            pcre_exec(exclude_compiled, NULL, buffer, blen, 0, 0, NULL, 0) >= 0)          {
1630          continue;          if (exclude_dir_compiled != NULL &&
1631                pcre_exec(exclude_dir_compiled, NULL, nextfile, nflen, 0, 0, NULL, 0) >= 0)
1632        if (include_compiled != NULL &&            continue;
1633            pcre_exec(include_compiled, NULL, buffer, blen, 0, 0, NULL, 0) < 0)  
1634          continue;          if (include_dir_compiled != NULL &&
1635                pcre_exec(include_dir_compiled, NULL, nextfile, nflen, 0, 0, NULL, 0) < 0)
1636              continue;
1637            }
1638          else
1639            {
1640            if (exclude_compiled != NULL &&
1641                pcre_exec(exclude_compiled, NULL, nextfile, nflen, 0, 0, NULL, 0) >= 0)
1642              continue;
1643    
1644            if (include_compiled != NULL &&
1645                pcre_exec(include_compiled, NULL, nextfile, nflen, 0, 0, NULL, 0) < 0)
1646              continue;
1647            }
1648    
1649        frc = grep_or_recurse(buffer, dir_recurse, FALSE);        frc = grep_or_recurse(buffer, dir_recurse, FALSE);
1650        if (frc > 1) rc = frc;        if (frc > 1) rc = frc;
# Line 935  skipping was not requested. The scan pro Line 1667  skipping was not requested. The scan pro
1667  argument at top level, we don't show the file name, unless we are only showing  argument at top level, we don't show the file name, unless we are only showing
1668  the file name, or the filename was forced (-H). */  the file name, or the filename was forced (-H). */
1669    
1670  in = fopen(pathname, "r");  #if defined SUPPORT_LIBZ || defined SUPPORT_LIBZ2
1671  if (in == NULL)  pathlen = (int)(strlen(pathname));
1672    #endif
1673    
1674    /* Open using zlib if it is supported and the file name ends with .gz. */
1675    
1676    #ifdef SUPPORT_LIBZ
1677    if (pathlen > 3 && strcmp(pathname + pathlen - 3, ".gz") == 0)
1678      {
1679      ingz = gzopen(pathname, "rb");
1680      if (ingz == NULL)
1681        {
1682        if (!silent)
1683          fprintf(stderr, "pcregrep: Failed to open %s: %s\n", pathname,
1684            strerror(errno));
1685        return 2;
1686        }
1687      handle = (void *)ingz;
1688      frtype = FR_LIBZ;
1689      }
1690    else
1691    #endif
1692    
1693    /* Otherwise open with bz2lib if it is supported and the name ends with .bz2. */
1694    
1695    #ifdef SUPPORT_LIBBZ2
1696    if (pathlen > 4 && strcmp(pathname + pathlen - 4, ".bz2") == 0)
1697      {
1698      inbz2 = BZ2_bzopen(pathname, "rb");
1699      handle = (void *)inbz2;
1700      frtype = FR_LIBBZ2;
1701      }
1702    else
1703    #endif
1704    
1705    /* Otherwise use plain fopen(). The label is so that we can come back here if
1706    an attempt to read a .bz2 file indicates that it really is a plain file. */
1707    
1708    #ifdef SUPPORT_LIBBZ2
1709    PLAIN_FILE:
1710    #endif
1711      {
1712      in = fopen(pathname, "rb");
1713      handle = (void *)in;
1714      frtype = FR_PLAIN;
1715      }
1716    
1717    /* All the opening methods return errno when they fail. */
1718    
1719    if (handle == NULL)
1720    {    {
1721    if (!silent)    if (!silent)
1722      fprintf(stderr, "pcregrep: Failed to open %s: %s\n", pathname,      fprintf(stderr, "pcregrep: Failed to open %s: %s\n", pathname,
# Line 944  if (in == NULL) Line 1724  if (in == NULL)
1724    return 2;    return 2;
1725    }    }
1726    
1727  rc = pcregrep(in, (filenames > FN_DEFAULT ||  /* Now grep the file */
1728    
1729    rc = pcregrep(handle, frtype, pathname, (filenames > FN_DEFAULT ||
1730    (filenames == FN_DEFAULT && !only_one_at_top))? pathname : NULL);    (filenames == FN_DEFAULT && !only_one_at_top))? pathname : NULL);
1731    
1732    /* Close in an appropriate manner. */
1733    
1734    #ifdef SUPPORT_LIBZ
1735    if (frtype == FR_LIBZ)
1736      gzclose(ingz);
1737    else
1738    #endif
1739    
1740    /* If it is a .bz2 file and the result is 3, it means that the first attempt to
1741    read failed. If the error indicates that the file isn't in fact bzipped, try
1742    again as a normal file. */
1743    
1744    #ifdef SUPPORT_LIBBZ2
1745    if (frtype == FR_LIBBZ2)
1746      {
1747      if (rc == 3)
1748        {
1749        int errnum;
1750        const char *err = BZ2_bzerror(inbz2, &errnum);
1751        if (errnum == BZ_DATA_ERROR_MAGIC)
1752          {
1753          BZ2_bzclose(inbz2);
1754          goto PLAIN_FILE;
1755          }
1756        else if (!silent)
1757          fprintf(stderr, "pcregrep: Failed to read %s using bzlib: %s\n",
1758            pathname, err);
1759        rc = 2;    /* The normal "something went wrong" code */
1760        }
1761      BZ2_bzclose(inbz2);
1762      }
1763    else
1764    #endif
1765    
1766    /* Normal file close */
1767    
1768  fclose(in);  fclose(in);
1769    
1770    /* Pass back the yield from pcregrep(). */
1771    
1772  return rc;  return rc;
1773  }  }
1774    
# Line 968  for (op = optionlist; op->one_char != 0; Line 1789  for (op = optionlist; op->one_char != 0;
1789    if (op->one_char > 0) fprintf(stderr, "%c", op->one_char);    if (op->one_char > 0) fprintf(stderr, "%c", op->one_char);
1790    }    }
1791  fprintf(stderr, "] [long options] [pattern] [files]\n");  fprintf(stderr, "] [long options] [pattern] [files]\n");
1792  fprintf(stderr, "Type `pcregrep --help' for more information.\n");  fprintf(stderr, "Type `pcregrep --help' for more information and the long "
1793      "options.\n");
1794  return rc;  return rc;
1795  }  }
1796    
# Line 987  option_item *op; Line 1809  option_item *op;
1809  printf("Usage: pcregrep [OPTION]... [PATTERN] [FILE1 FILE2 ...]\n");  printf("Usage: pcregrep [OPTION]... [PATTERN] [FILE1 FILE2 ...]\n");
1810  printf("Search for PATTERN in each FILE or standard input.\n");  printf("Search for PATTERN in each FILE or standard input.\n");
1811  printf("PATTERN must be present if neither -e nor -f is used.\n");  printf("PATTERN must be present if neither -e nor -f is used.\n");
1812  printf("\"-\" can be used as a file name to mean STDIN.\n\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");  
1813    
1814    #ifdef SUPPORT_LIBZ
1815    printf("Files whose names end in .gz are read using zlib.\n");
1816    #endif
1817    
1818    #ifdef SUPPORT_LIBBZ2
1819    printf("Files whose names end in .bz2 are read using bzlib2.\n");
1820    #endif
1821    
1822    #if defined SUPPORT_LIBZ || defined SUPPORT_LIBBZ2
1823    printf("Other files and the standard input are read as plain files.\n\n");
1824    #else
1825    printf("All files are read as plain files, without any interpretation.\n\n");
1826    #endif
1827    
1828    printf("Example: pcregrep -i 'hello.*world' menu.h main.c\n\n");
1829  printf("Options:\n");  printf("Options:\n");
1830    
1831  for (op = optionlist; op->one_char != 0; op++)  for (op = optionlist; op->one_char != 0; op++)
1832    {    {
1833    int n;    int n;
1834    char s[4];    char s[4];
1835    
1836      /* Two options were accidentally implemented and documented with underscores
1837      instead of hyphens in their names, something that was not noticed for quite a
1838      few releases. When fixing this, I left the underscored versions in the list
1839      in case people were using them. However, we don't want to display them in the
1840      help data. There are no other options that contain underscores, and we do not
1841      expect ever to implement such options. Therefore, just omit any option that
1842      contains an underscore. */
1843    
1844      if (strchr(op->long_name, '_') != NULL) continue;
1845    
1846    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, "   ");
1847    printf("  %s --%s%n", s, op->long_name, &n);    n = 31 - printf("  %s --%s", s, op->long_name);
   n = 30 - n;  
1848    if (n < 1) n = 1;    if (n < 1) n = 1;
1849    printf("%.*s%s\n", n, "                    ", op->help_text);    printf("%.*s%s\n", n, "                     ", op->help_text);
1850    }    }
1851    
1852  printf("\nWhen reading patterns from a file instead of using a command line option,\n");  printf("\nNumbers may be followed by K or M, e.g. --buffer-size=100K.\n");
1853    printf("The default value for --buffer-size is %d.\n", PCREGREP_BUFSIZE);
1854    printf("When reading patterns from a file instead of using a command line option,\n");
1855  printf("trailing white space is removed and blank lines are ignored.\n");  printf("trailing white space is removed and blank lines are ignored.\n");
1856  printf("There is a maximum of %d patterns.\n", MAX_PATTERN_COUNT);  printf("There is a maximum of %d patterns, each of maximum size %d bytes.\n",
1857      MAX_PATTERN_COUNT, PATBUFSIZE);
1858    
1859  printf("\nWith no FILEs, read standard input. If fewer than two FILEs given, assume -h.\n");  printf("\nWith no FILEs, read standard input. If fewer than two FILEs given, assume -h.\n");
1860  printf("Exit status is 0 if any matches, 1 if no matches, and 2 if trouble.\n");  printf("Exit status is 0 if any matches, 1 if no matches, and 2 if trouble.\n");
# Line 1023  handle_option(int letter, int options) Line 1872  handle_option(int letter, int options)
1872  {  {
1873  switch(letter)  switch(letter)
1874    {    {
1875    case N_HELP: help(); exit(0);    case N_FOFFSETS: file_offsets = TRUE; break;
1876      case N_HELP: help(); pcregrep_exit(0);
1877      case N_LBUFFER: line_buffered = TRUE; break;
1878      case N_LOFFSETS: line_offsets = number = TRUE; break;
1879      case N_NOJIT: study_options &= ~PCRE_STUDY_JIT_COMPILE; break;
1880    case 'c': count_only = TRUE; break;    case 'c': count_only = TRUE; break;
1881    case 'F': process_options |= PO_FIXED_STRINGS; break;    case 'F': process_options |= PO_FIXED_STRINGS; break;
1882    case 'H': filenames = FN_FORCE; break;    case 'H': filenames = FN_FORCE; break;
1883    case 'h': filenames = FN_NONE; break;    case 'h': filenames = FN_NONE; break;
1884    case 'i': options |= PCRE_CASELESS; break;    case 'i': options |= PCRE_CASELESS; break;
1885    case 'l': filenames = FN_ONLY; break;    case 'l': omit_zero_count = TRUE; filenames = FN_MATCH_ONLY; break;
1886    case 'L': filenames = FN_NOMATCH_ONLY; break;    case 'L': filenames = FN_NOMATCH_ONLY; break;
1887    case 'M': multiline = TRUE; options |= PCRE_MULTILINE|PCRE_FIRSTLINE; break;    case 'M': multiline = TRUE; options |= PCRE_MULTILINE|PCRE_FIRSTLINE; break;
1888    case 'n': number = TRUE; break;    case 'n': number = TRUE; break;
1889    case 'o': only_matching = TRUE; break;    case 'o': only_matching = 0; break;
1890    case 'q': quiet = TRUE; break;    case 'q': quiet = TRUE; break;
1891    case 'r': dee_action = dee_RECURSE; break;    case 'r': dee_action = dee_RECURSE; break;
1892    case 's': silent = TRUE; break;    case 's': silent = TRUE; break;
1893    case 'u': options |= PCRE_UTF8; break;    case 'u': options |= PCRE_UTF8; utf8 = TRUE; break;
1894    case 'v': invert = TRUE; break;    case 'v': invert = TRUE; break;
1895    case 'w': process_options |= PO_WORD_MATCH; break;    case 'w': process_options |= PO_WORD_MATCH; break;
1896    case 'x': process_options |= PO_LINE_MATCH; break;    case 'x': process_options |= PO_LINE_MATCH; break;
1897    
1898    case 'V':    case 'V':
1899    fprintf(stderr, "pcregrep version %s using ", VERSION);    fprintf(stderr, "pcregrep version %s\n", pcre_version());
1900    fprintf(stderr, "PCRE version %s\n", pcre_version());    pcregrep_exit(0);
   exit(0);  
1901    break;    break;
1902    
1903    default:    default:
1904    fprintf(stderr, "pcregrep: Unknown option -%c\n", letter);    fprintf(stderr, "pcregrep: Unknown option -%c\n", letter);
1905    exit(usage(2));    pcregrep_exit(usage(2));
1906    }    }
1907    
1908  return options;  return options;
# Line 1105  Returns:         TRUE on success, FALSE Line 1957  Returns:         TRUE on success, FALSE
1957  static BOOL  static BOOL
1958  compile_single_pattern(char *pattern, int options, char *filename, int count)  compile_single_pattern(char *pattern, int options, char *filename, int count)
1959  {  {
1960  char buffer[MBUFTHIRD + 16];  char buffer[PATBUFSIZE];
1961  const char *error;  const char *error;
1962  int errptr;  int errptr;
1963    
# Line 1116  if (pattern_count >= MAX_PATTERN_COUNT) Line 1968  if (pattern_count >= MAX_PATTERN_COUNT)
1968    return FALSE;    return FALSE;
1969    }    }
1970    
1971  sprintf(buffer, "%s%.*s%s", prefix[process_options], MBUFTHIRD, pattern,  sprintf(buffer, "%s%.*s%s", prefix[process_options], bufthird, pattern,
1972    suffix[process_options]);    suffix[process_options]);
1973  pattern_list[pattern_count] =  pattern_list[pattern_count] =
1974    pcre_compile(buffer, options, &error, &errptr, pcretables);    pcre_compile(buffer, options, &error, &errptr, pcretables);
1975  if (pattern_list[pattern_count++] != NULL) return TRUE;  if (pattern_list[pattern_count] != NULL)
1976      {
1977      pattern_count++;
1978      return TRUE;
1979      }
1980    
1981  /* Handle compile errors */  /* Handle compile errors */
1982    
# Line 1152  return FALSE; Line 2008  return FALSE;
2008  *************************************************/  *************************************************/
2009    
2010  /* When the -F option has been used, each string may be a list of strings,  /* When the -F option has been used, each string may be a list of strings,
2011  separated by newlines. They will be matched literally.  separated by line breaks. They will be matched literally.
2012    
2013  Arguments:  Arguments:
2014    pattern        the pattern string    pattern        the pattern string
# Line 1170  compile_pattern(char *pattern, int optio Line 2026  compile_pattern(char *pattern, int optio
2026  {  {
2027  if ((process_options & PO_FIXED_STRINGS) != 0)  if ((process_options & PO_FIXED_STRINGS) != 0)
2028    {    {
2029    char buffer[MBUFTHIRD];    char *eop = pattern + strlen(pattern);
2030      char buffer[PATBUFSIZE];
2031    for(;;)    for(;;)
2032      {      {
2033      char *p = strchr(pattern, '\n');      int ellength;
2034      if (p == NULL)      char *p = end_of_line(pattern, eop, &ellength);
2035        if (ellength == 0)
2036        return compile_single_pattern(pattern, options, filename, count);        return compile_single_pattern(pattern, options, filename, count);
2037      sprintf(buffer, "%.*s", p - pattern, pattern);      sprintf(buffer, "%.*s", (int)(p - pattern - ellength), pattern);
2038      pattern = p + 1;      pattern = p;
2039      if (!compile_single_pattern(buffer, options, filename, count))      if (!compile_single_pattern(buffer, options, filename, count))
2040        return FALSE;        return FALSE;
2041      }      }
# Line 1200  int i, j; Line 2058  int i, j;
2058  int rc = 1;  int rc = 1;
2059  int pcre_options = 0;  int pcre_options = 0;
2060  int cmd_pattern_count = 0;  int cmd_pattern_count = 0;
2061    int hint_count = 0;
2062  int errptr;  int errptr;
2063  BOOL only_one_at_top;  BOOL only_one_at_top;
2064  char *patterns[MAX_PATTERN_COUNT];  char *patterns[MAX_PATTERN_COUNT];
2065  const char *locale_from = "--locale";  const char *locale_from = "--locale";
2066  const char *error;  const char *error;
2067    
2068    #ifdef SUPPORT_PCREGREP_JIT
2069    pcre_jit_stack *jit_stack = NULL;
2070    #endif
2071    
2072    /* Set the default line ending value from the default in the PCRE library;
2073    "lf", "cr", "crlf", and "any" are supported. Anything else is treated as "lf".
2074    Note that the return values from pcre_config(), though derived from the ASCII
2075    codes, are the same in EBCDIC environments, so we must use the actual values
2076    rather than escapes such as as '\r'. */
2077    
2078    (void)pcre_config(PCRE_CONFIG_NEWLINE, &i);
2079    switch(i)
2080      {
2081      default:               newline = (char *)"lf"; break;
2082      case 13:               newline = (char *)"cr"; break;
2083      case (13 << 8) | 10:   newline = (char *)"crlf"; break;
2084      case -1:               newline = (char *)"any"; break;
2085      case -2:               newline = (char *)"anycrlf"; break;
2086      }
2087    
2088  /* Process the options */  /* Process the options */
2089    
2090  for (i = 1; i < argc; i++)  for (i = 1; i < argc; i++)
# Line 1223  for (i = 1; i < argc; i++) Line 2102  for (i = 1; i < argc; i++)
2102    if (argv[i][1] == 0)    if (argv[i][1] == 0)
2103      {      {
2104      if (pattern_filename != NULL || pattern_count > 0) break;      if (pattern_filename != NULL || pattern_count > 0) break;
2105        else exit(usage(2));        else pcregrep_exit(usage(2));
2106      }      }
2107    
2108    /* Handle a long name option, or -- to terminate the options */    /* Handle a long name option, or -- to terminate the options */
# Line 1245  for (i = 1; i < argc; i++) Line 2124  for (i = 1; i < argc; i++)
2124      Some options have variations in the long name spelling: specifically, we      Some options have variations in the long name spelling: specifically, we
2125      allow "regexp" because GNU grep allows it, though I personally go along      allow "regexp" because GNU grep allows it, though I personally go along
2126      with Jeffrey Friedl and Larry Wall in preferring "regex" without the "p".      with Jeffrey Friedl and Larry Wall in preferring "regex" without the "p".
2127      These options are entered in the table as "regex(p)". No option is in both      These options are entered in the table as "regex(p)". Options can be in
2128      these categories, fortunately. */      both these categories. */
2129    
2130      for (op = optionlist; op->one_char != 0; op++)      for (op = optionlist; op->one_char != 0; op++)
2131        {        {
2132        char *opbra = strchr(op->long_name, '(');        char *opbra = strchr(op->long_name, '(');
2133        char *equals = strchr(op->long_name, '=');        char *equals = strchr(op->long_name, '=');
2134        if (opbra == NULL)     /* Not a (p) case */  
2135          /* Handle options with only one spelling of the name */
2136    
2137          if (opbra == NULL)     /* Does not contain '(' */
2138          {          {
2139          if (equals == NULL)  /* Not thing=data case */          if (equals == NULL)  /* Not thing=data case */
2140            {            {
# Line 1260  for (i = 1; i < argc; i++) Line 2142  for (i = 1; i < argc; i++)
2142            }            }
2143          else                 /* Special case xxx=data */          else                 /* Special case xxx=data */
2144            {            {
2145            int oplen = equals - op->long_name;            int oplen = (int)(equals - op->long_name);
2146            int arglen = (argequals == NULL)? strlen(arg) : argequals - arg;            int arglen = (argequals == NULL)?
2147                (int)strlen(arg) : (int)(argequals - arg);
2148            if (oplen == arglen && strncmp(arg, op->long_name, oplen) == 0)            if (oplen == arglen && strncmp(arg, op->long_name, oplen) == 0)
2149              {              {
2150              option_data = arg + arglen;              option_data = arg + arglen;
# Line 1274  for (i = 1; i < argc; i++) Line 2157  for (i = 1; i < argc; i++)
2157              }              }
2158            }            }
2159          }          }
2160        else                   /* Special case xxxx(p) */  
2161          /* Handle options with an alternate spelling of the name */
2162    
2163          else
2164          {          {
2165          char buff1[24];          char buff1[24];
2166          char buff2[24];          char buff2[24];
2167          int baselen = opbra - op->long_name;  
2168            int baselen = (int)(opbra - op->long_name);
2169            int fulllen = (int)(strchr(op->long_name, ')') - op->long_name + 1);
2170            int arglen = (argequals == NULL || equals == NULL)?
2171              (int)strlen(arg) : (int)(argequals - arg);
2172    
2173          sprintf(buff1, "%.*s", baselen, op->long_name);          sprintf(buff1, "%.*s", baselen, op->long_name);
2174          sprintf(buff2, "%s%.*s", buff1, strlen(op->long_name) - baselen - 2,          sprintf(buff2, "%s%.*s", buff1, fulllen - baselen - 2, opbra + 1);
2175            opbra + 1);  
2176          if (strcmp(arg, buff1) == 0 || strcmp(arg, buff2) == 0)          if (strncmp(arg, buff1, arglen) == 0 ||
2177               strncmp(arg, buff2, arglen) == 0)
2178              {
2179              if (equals != NULL && argequals != NULL)
2180                {
2181                option_data = argequals;
2182                if (*option_data == '=')
2183                  {
2184                  option_data++;
2185                  longopwasequals = TRUE;
2186                  }
2187                }
2188            break;            break;
2189              }
2190          }          }
2191        }        }
2192    
2193      if (op->one_char == 0)      if (op->one_char == 0)
2194        {        {
2195        fprintf(stderr, "pcregrep: Unknown option %s\n", argv[i]);        fprintf(stderr, "pcregrep: Unknown option %s\n", argv[i]);
2196        exit(usage(2));        pcregrep_exit(usage(2));
2197        }        }
2198      }      }
2199    
2200      /* Jeffrey Friedl's debugging harness uses these additional options which
2201      are not in the right form for putting in the option table because they use
2202      only one hyphen, yet are more than one character long. By putting them
2203      separately here, they will not get displayed as part of the help() output,
2204      but I don't think Jeffrey will care about that. */
2205    
2206    #ifdef JFRIEDL_DEBUG
2207      else if (strcmp(argv[i], "-pre") == 0) {
2208              jfriedl_prefix = argv[++i];
2209              continue;
2210      } else if (strcmp(argv[i], "-post") == 0) {
2211              jfriedl_postfix = argv[++i];
2212              continue;
2213      } else if (strcmp(argv[i], "-XT") == 0) {
2214              sscanf(argv[++i], "%d", &jfriedl_XT);
2215              continue;
2216      } else if (strcmp(argv[i], "-XR") == 0) {
2217              sscanf(argv[++i], "%d", &jfriedl_XR);
2218              continue;
2219      }
2220    #endif
2221    
2222    
2223    /* 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
2224    continue till we hit the last one or one that needs data. */    continue till we hit the last one or one that needs data. */
2225    
# Line 1304  for (i = 1; i < argc; i++) Line 2230  for (i = 1; i < argc; i++)
2230      while (*s != 0)      while (*s != 0)
2231        {        {
2232        for (op = optionlist; op->one_char != 0; op++)        for (op = optionlist; op->one_char != 0; op++)
2233          { if (*s == op->one_char) break; }          {
2234            if (*s == op->one_char) break;
2235            }
2236        if (op->one_char == 0)        if (op->one_char == 0)
2237          {          {
2238          fprintf(stderr, "pcregrep: Unknown option letter '%c' in \"%s\"\n",          fprintf(stderr, "pcregrep: Unknown option letter '%c' in \"%s\"\n",
2239            *s, argv[i]);            *s, argv[i]);
2240          exit(usage(2));          pcregrep_exit(usage(2));
2241            }
2242    
2243          /* Check for a single-character option that has data: OP_OP_NUMBER
2244          is used for one that either has a numerical number or defaults, i.e. the
2245          data is optional. If a digit follows, there is data; if not, carry on
2246          with other single-character options in the same string. */
2247    
2248          option_data = s+1;
2249          if (op->type == OP_OP_NUMBER)
2250            {
2251            if (isdigit((unsigned char)s[1])) break;
2252          }          }
2253        if (op->type != OP_NODATA || s[1] == 0)        else   /* Check for end or a dataless option */
2254          {          {
2255          option_data = s+1;          if (op->type != OP_NODATA || s[1] == 0) break;
         break;  
2256          }          }
2257    
2258          /* Handle a single-character option with no data, then loop for the
2259          next character in the string. */
2260    
2261        pcre_options = handle_option(*s++, pcre_options);        pcre_options = handle_option(*s++, pcre_options);
2262        }        }
2263      }      }
# Line 1332  for (i = 1; i < argc; i++) Line 2274  for (i = 1; i < argc; i++)
2274    
2275    /* If the option type is OP_OP_STRING or OP_OP_NUMBER, it's an option that    /* If the option type is OP_OP_STRING or OP_OP_NUMBER, it's an option that
2276    either has a value or defaults to something. It cannot have data in a    either has a value or defaults to something. It cannot have data in a
2277    separate item. At the moment, the only such options are "colo(u)r" and    separate item. At the moment, the only such options are "colo(u)r",
2278    Jeffrey Friedl's special debugging option. */    "only-matching", and Jeffrey Friedl's special -S debugging option. */
2279    
2280    if (*option_data == 0 &&    if (*option_data == 0 &&
2281        (op->type == OP_OP_STRING || op->type == OP_OP_NUMBER))        (op->type == OP_OP_STRING || op->type == OP_OP_NUMBER))
# Line 1343  for (i = 1; i < argc; i++) Line 2285  for (i = 1; i < argc; i++)
2285        case N_COLOUR:        case N_COLOUR:
2286        colour_option = (char *)"auto";        colour_option = (char *)"auto";
2287        break;        break;
2288    
2289          case 'o':
2290          only_matching = 0;
2291          break;
2292    
2293  #ifdef JFRIEDL_DEBUG  #ifdef JFRIEDL_DEBUG
2294        case 'S':        case 'S':
2295        S_arg = 0;        S_arg = 0;
# Line 1359  for (i = 1; i < argc; i++) Line 2306  for (i = 1; i < argc; i++)
2306      if (i >= argc - 1 || longopwasequals)      if (i >= argc - 1 || longopwasequals)
2307        {        {
2308        fprintf(stderr, "pcregrep: Data missing after %s\n", argv[i]);        fprintf(stderr, "pcregrep: Data missing after %s\n", argv[i]);
2309        exit(usage(2));        pcregrep_exit(usage(2));
2310        }        }
2311      option_data = argv[++i];      option_data = argv[++i];
2312      }      }
# Line 1380  for (i = 1; i < argc; i++) Line 2327  for (i = 1; i < argc; i++)
2327    
2328    /* Otherwise, deal with single string or numeric data values. */    /* Otherwise, deal with single string or numeric data values. */
2329    
2330    else if (op->type != OP_NUMBER && op->type != OP_OP_NUMBER)    else if (op->type != OP_NUMBER && op->type != OP_LONGNUMBER &&
2331               op->type != OP_OP_NUMBER)
2332      {      {
2333      *((char **)op->dataptr) = option_data;      *((char **)op->dataptr) = option_data;
2334      }      }
2335    
2336      /* Avoid the use of strtoul() because SunOS4 doesn't have it. This is used
2337      only for unpicking arguments, so just keep it simple. */
2338    
2339    else    else
2340      {      {
2341      char *endptr;      unsigned long int n = 0;
2342      int n = strtoul(option_data, &endptr, 10);      char *endptr = option_data;
2343        while (*endptr != 0 && isspace((unsigned char)(*endptr))) endptr++;
2344        while (isdigit((unsigned char)(*endptr)))
2345          n = n * 10 + (int)(*endptr++ - '0');
2346        if (toupper(*endptr) == 'K')
2347          {
2348          n *= 1024;
2349          endptr++;
2350          }
2351        else if (toupper(*endptr) == 'M')
2352          {
2353          n *= 1024*1024;
2354          endptr++;
2355          }
2356      if (*endptr != 0)      if (*endptr != 0)
2357        {        {
2358        if (longop)        if (longop)
2359          {          {
2360          char *equals = strchr(op->long_name, '=');          char *equals = strchr(op->long_name, '=');
2361          int nlen = (equals == NULL)? (int)strlen(op->long_name) :          int nlen = (equals == NULL)? (int)strlen(op->long_name) :
2362            equals - op->long_name;            (int)(equals - op->long_name);
2363          fprintf(stderr, "pcregrep: Malformed number \"%s\" after --%.*s\n",          fprintf(stderr, "pcregrep: Malformed number \"%s\" after --%.*s\n",
2364            option_data, nlen, op->long_name);            option_data, nlen, op->long_name);
2365          }          }
2366        else        else
2367          fprintf(stderr, "pcregrep: Malformed number \"%s\" after -%c\n",          fprintf(stderr, "pcregrep: Malformed number \"%s\" after -%c\n",
2368            option_data, op->one_char);            option_data, op->one_char);
2369        exit(usage(2));        pcregrep_exit(usage(2));
2370        }        }
2371      *((int *)op->dataptr) = n;      if (op->type == OP_LONGNUMBER)
2372            *((unsigned long int *)op->dataptr) = n;
2373        else
2374            *((int *)op->dataptr) = n;
2375      }      }
2376    }    }
2377    
# Line 1416  if (both_context > 0) Line 2384  if (both_context > 0)
2384    if (before_context == 0) before_context = both_context;    if (before_context == 0) before_context = both_context;
2385    }    }
2386    
2387    /* Only one of --only-matching, --file-offsets, or --line-offsets is permitted.
2388    However, the latter two set only_matching. */
2389    
2390    if ((only_matching >= 0 && (file_offsets || line_offsets)) ||
2391        (file_offsets && line_offsets))
2392      {
2393      fprintf(stderr, "pcregrep: Cannot mix --only-matching, --file-offsets "
2394        "and/or --line-offsets\n");
2395      pcregrep_exit(usage(2));
2396      }
2397    
2398    if (file_offsets || line_offsets) only_matching = 0;
2399    
2400  /* If a locale has not been provided as an option, see if the LC_CTYPE or  /* If a locale has not been provided as an option, see if the LC_CTYPE or
2401  LC_ALL environment variable is set, and if so, use it. */  LC_ALL environment variable is set, and if so, use it. */
2402    
# Line 1465  if (colour_option != NULL && strcmp(colo Line 2446  if (colour_option != NULL && strcmp(colo
2446      }      }
2447    }    }
2448    
2449    /* Interpret the newline type; the default settings are Unix-like. */
2450    
2451    if (strcmp(newline, "cr") == 0 || strcmp(newline, "CR") == 0)
2452      {
2453      pcre_options |= PCRE_NEWLINE_CR;
2454      endlinetype = EL_CR;
2455      }
2456    else if (strcmp(newline, "lf") == 0 || strcmp(newline, "LF") == 0)
2457      {
2458      pcre_options |= PCRE_NEWLINE_LF;
2459      endlinetype = EL_LF;
2460      }
2461    else if (strcmp(newline, "crlf") == 0 || strcmp(newline, "CRLF") == 0)
2462      {
2463      pcre_options |= PCRE_NEWLINE_CRLF;
2464      endlinetype = EL_CRLF;
2465      }
2466    else if (strcmp(newline, "any") == 0 || strcmp(newline, "ANY") == 0)
2467      {
2468      pcre_options |= PCRE_NEWLINE_ANY;
2469      endlinetype = EL_ANY;
2470      }
2471    else if (strcmp(newline, "anycrlf") == 0 || strcmp(newline, "ANYCRLF") == 0)
2472      {
2473      pcre_options |= PCRE_NEWLINE_ANYCRLF;
2474      endlinetype = EL_ANYCRLF;
2475      }
2476    else
2477      {
2478      fprintf(stderr, "pcregrep: Invalid newline specifier \"%s\"\n", newline);
2479      return 2;
2480      }
2481    
2482  /* Interpret the text values for -d and -D */  /* Interpret the text values for -d and -D */
2483    
2484  if (dee_option != NULL)  if (dee_option != NULL)
# Line 1490  if (DEE_option != NULL) Line 2504  if (DEE_option != NULL)
2504      }      }
2505    }    }
2506    
2507  /* Check the value for Jeff Friedl's debugging option. */  /* Check the values for Jeffrey Friedl's debugging options. */
2508    
2509  #ifdef JFRIEDL_DEBUG  #ifdef JFRIEDL_DEBUG
2510  if (S_arg > 9)  if (S_arg > 9)
# Line 1498  if (S_arg > 9) Line 2512  if (S_arg > 9)
2512    fprintf(stderr, "pcregrep: bad value for -S option\n");    fprintf(stderr, "pcregrep: bad value for -S option\n");
2513    return 2;    return 2;
2514    }    }
2515    if (jfriedl_XT != 0 || jfriedl_XR != 0)
2516      {
2517      if (jfriedl_XT == 0) jfriedl_XT = 1;
2518      if (jfriedl_XR == 0) jfriedl_XR = 1;
2519      }
2520  #endif  #endif
2521    
2522  /* Get memory to store the pattern and hints lists. */  /* Get memory for the main buffer, and to store the pattern and hints lists. */
2523    
2524    bufsize = 3*bufthird;
2525    main_buffer = (char *)malloc(bufsize);
2526  pattern_list = (pcre **)malloc(MAX_PATTERN_COUNT * sizeof(pcre *));  pattern_list = (pcre **)malloc(MAX_PATTERN_COUNT * sizeof(pcre *));
2527  hints_list = (pcre_extra **)malloc(MAX_PATTERN_COUNT * sizeof(pcre_extra *));  hints_list = (pcre_extra **)malloc(MAX_PATTERN_COUNT * sizeof(pcre_extra *));
2528    
2529  if (pattern_list == NULL || hints_list == NULL)  if (main_buffer == NULL || pattern_list == NULL || hints_list == NULL)
2530    {    {
2531    fprintf(stderr, "pcregrep: malloc failed\n");    fprintf(stderr, "pcregrep: malloc failed\n");
2532    return 2;    goto EXIT2;
2533    }    }
2534    
2535  /* If no patterns were provided by -e, and there is no file provided by -f,  /* If no patterns were provided by -e, and there is no file provided by -f,
# Line 1527  for (j = 0; j < cmd_pattern_count; j++) Line 2548  for (j = 0; j < cmd_pattern_count; j++)
2548    {    {
2549    if (!compile_pattern(patterns[j], pcre_options, NULL,    if (!compile_pattern(patterns[j], pcre_options, NULL,
2550         (j == 0 && cmd_pattern_count == 1)? 0 : j + 1))         (j == 0 && cmd_pattern_count == 1)? 0 : j + 1))
2551      return 2;      goto EXIT2;
2552    }    }
2553    
2554  /* Compile the regular expressions that are provided in a file. */  /* Compile the regular expressions that are provided in a file. */
# Line 1537  if (pattern_filename != NULL) Line 2558  if (pattern_filename != NULL)
2558    int linenumber = 0;    int linenumber = 0;
2559    FILE *f;    FILE *f;
2560    char *filename;    char *filename;
2561    char buffer[MBUFTHIRD];    char buffer[PATBUFSIZE];
2562    
2563    if (strcmp(pattern_filename, "-") == 0)    if (strcmp(pattern_filename, "-") == 0)
2564      {      {
# Line 1551  if (pattern_filename != NULL) Line 2572  if (pattern_filename != NULL)
2572        {        {
2573        fprintf(stderr, "pcregrep: Failed to open %s: %s\n", pattern_filename,        fprintf(stderr, "pcregrep: Failed to open %s: %s\n", pattern_filename,
2574          strerror(errno));          strerror(errno));
2575        return 2;        goto EXIT2;
2576        }        }
2577      filename = pattern_filename;      filename = pattern_filename;
2578      }      }
2579    
2580    while (fgets(buffer, MBUFTHIRD, f) != NULL)    while (fgets(buffer, PATBUFSIZE, f) != NULL)
2581      {      {
2582      char *s = buffer + (int)strlen(buffer);      char *s = buffer + (int)strlen(buffer);
2583      while (s > buffer && isspace((unsigned char)(s[-1]))) s--;      while (s > buffer && isspace((unsigned char)(s[-1]))) s--;
# Line 1564  if (pattern_filename != NULL) Line 2585  if (pattern_filename != NULL)
2585      linenumber++;      linenumber++;
2586      if (buffer[0] == 0) continue;   /* Skip blank lines */      if (buffer[0] == 0) continue;   /* Skip blank lines */
2587      if (!compile_pattern(buffer, pcre_options, filename, linenumber))      if (!compile_pattern(buffer, pcre_options, filename, linenumber))
2588        return 2;        goto EXIT2;
2589      }      }
2590    
2591    if (f != stdin) fclose(f);    if (f != stdin) fclose(f);
2592    }    }
2593    
2594  /* Study the regular expressions, as we will be running them many times */  /* Study the regular expressions, as we will be running them many times. Unless
2595    JIT has been explicitly disabled, arrange a stack for it to use. */
2596    
2597    #ifdef SUPPORT_PCREGREP_JIT
2598    if ((study_options & PCRE_STUDY_JIT_COMPILE) != 0)
2599      jit_stack = pcre_jit_stack_alloc(32*1024, 1024*1024);
2600    #endif
2601    
2602  for (j = 0; j < pattern_count; j++)  for (j = 0; j < pattern_count; j++)
2603    {    {
2604    hints_list[j] = pcre_study(pattern_list[j], 0, &error);    hints_list[j] = pcre_study(pattern_list[j], study_options, &error);
2605    if (error != NULL)    if (error != NULL)
2606      {      {
2607      char s[16];      char s[16];
2608      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);
2609      fprintf(stderr, "pcregrep: Error while studying regex%s: %s\n", s, error);      fprintf(stderr, "pcregrep: Error while studying regex%s: %s\n", s, error);
2610      return 2;      goto EXIT2;
2611        }
2612      hint_count++;
2613    #ifdef SUPPORT_PCREGREP_JIT
2614      if (jit_stack != NULL && hints_list[j] != NULL)
2615        pcre_assign_jit_stack(hints_list[j], NULL, jit_stack);
2616    #endif
2617      }
2618    
2619    /* If --match-limit or --recursion-limit was set, put the value(s) into the
2620    pcre_extra block for each pattern. */
2621    
2622    if (match_limit > 0 || match_limit_recursion > 0)
2623      {
2624      for (j = 0; j < pattern_count; j++)
2625        {
2626        if (hints_list[j] == NULL)
2627          {
2628          hints_list[j] = malloc(sizeof(pcre_extra));
2629          if (hints_list[j] == NULL)
2630            {
2631            fprintf(stderr, "pcregrep: malloc failed\n");
2632            pcregrep_exit(2);
2633            }
2634          }
2635        if (match_limit > 0)
2636          {
2637          hints_list[j]->flags |= PCRE_EXTRA_MATCH_LIMIT;
2638          hints_list[j]->match_limit = match_limit;
2639          }
2640        if (match_limit_recursion > 0)
2641          {
2642          hints_list[j]->flags |= PCRE_EXTRA_MATCH_LIMIT_RECURSION;
2643          hints_list[j]->match_limit_recursion = match_limit_recursion;
2644          }
2645      }      }
2646    }    }
2647    
# Line 1594  if (exclude_pattern != NULL) Line 2655  if (exclude_pattern != NULL)
2655      {      {
2656      fprintf(stderr, "pcregrep: Error in 'exclude' regex at offset %d: %s\n",      fprintf(stderr, "pcregrep: Error in 'exclude' regex at offset %d: %s\n",
2657        errptr, error);        errptr, error);
2658      return 2;      goto EXIT2;
2659      }      }
2660    }    }
2661    
# Line 1606  if (include_pattern != NULL) Line 2667  if (include_pattern != NULL)
2667      {      {
2668      fprintf(stderr, "pcregrep: Error in 'include' regex at offset %d: %s\n",      fprintf(stderr, "pcregrep: Error in 'include' regex at offset %d: %s\n",
2669        errptr, error);        errptr, error);
2670      return 2;      goto EXIT2;
2671        }
2672      }
2673    
2674    if (exclude_dir_pattern != NULL)
2675      {
2676      exclude_dir_compiled = pcre_compile(exclude_dir_pattern, 0, &error, &errptr,
2677        pcretables);
2678      if (exclude_dir_compiled == NULL)
2679        {
2680        fprintf(stderr, "pcregrep: Error in 'exclude_dir' regex at offset %d: %s\n",
2681          errptr, error);
2682        goto EXIT2;
2683        }
2684      }
2685    
2686    if (include_dir_pattern != NULL)
2687      {
2688      include_dir_compiled = pcre_compile(include_dir_pattern, 0, &error, &errptr,
2689        pcretables);
2690      if (include_dir_compiled == NULL)
2691        {
2692        fprintf(stderr, "pcregrep: Error in 'include_dir' regex at offset %d: %s\n",
2693          errptr, error);
2694        goto EXIT2;
2695      }      }
2696    }    }
2697    
2698  /* 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. */
2699    
2700  if (i >= argc)  if (i >= argc)
2701    return pcregrep(stdin, (filenames > FN_DEFAULT)? stdin_name : NULL);    {
2702      rc = pcregrep(stdin, FR_PLAIN, stdin_name,
2703        (filenames > FN_DEFAULT)? stdin_name : NULL);
2704      goto EXIT;
2705      }
2706    
2707  /* Otherwise, work through the remaining arguments as files or directories.  /* Otherwise, work through the remaining arguments as files or directories.
2708  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
# Line 1630  for (; i < argc; i++) Line 2719  for (; i < argc; i++)
2719      else if (frc == 0 && rc == 1) rc = 0;      else if (frc == 0 && rc == 1) rc = 0;
2720    }    }
2721    
2722  return rc;  EXIT:
2723    #ifdef SUPPORT_PCREGREP_JIT
2724    if (jit_stack != NULL) pcre_jit_stack_free(jit_stack);
2725    #endif
2726    if (main_buffer != NULL) free(main_buffer);
2727    if (pattern_list != NULL)
2728      {
2729      for (i = 0; i < pattern_count; i++) free(pattern_list[i]);
2730      free(pattern_list);
2731      }
2732    if (hints_list != NULL)
2733      {
2734      for (i = 0; i < hint_count; i++)
2735        {
2736        if (hints_list[i] != NULL) pcre_free_study(hints_list[i]);
2737        }
2738      free(hints_list);
2739      }
2740    pcregrep_exit(rc);
2741    
2742    EXIT2:
2743    rc = 2;
2744    goto EXIT;
2745  }  }
2746    
2747  /* End of pcregrep */  /* End of pcregrep */

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