/[pcre]/code/trunk/pcregrep.c
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revision 199 by ph10, Tue Jul 31 14:39:09 2007 UTC revision 1216 by zherczeg, Fri Nov 9 13:05:29 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) 1997-2007 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 38  POSSIBILITY OF SUCH DAMAGE. Line 38  POSSIBILITY OF SUCH DAMAGE.
38  */  */
39    
40  #ifdef HAVE_CONFIG_H  #ifdef HAVE_CONFIG_H
41  #include <config.h>  #include "config.h"
42  #endif  #endif
43    
44  #include <ctype.h>  #include <ctype.h>
# Line 55  POSSIBILITY OF SUCH DAMAGE. Line 55  POSSIBILITY OF SUCH DAMAGE.
55  #include <unistd.h>  #include <unistd.h>
56  #endif  #endif
57    
58  #include <pcre.h>  #ifdef SUPPORT_LIBZ
59    #include <zlib.h>
60    #endif
61    
62    #ifdef SUPPORT_LIBBZ2
63    #include <bzlib.h>
64    #endif
65    
66    #include "pcre.h"
67    
68  #define FALSE 0  #define FALSE 0
69  #define TRUE 1  #define TRUE 1
70    
71  typedef int BOOL;  typedef int BOOL;
72    
73  #define MAX_PATTERN_COUNT 100  #define OFFSET_SIZE 99
74    
75  #if BUFSIZ > 8192  #if BUFSIZ > 8192
76  #define MBUFTHIRD BUFSIZ  #define MAXPATLEN BUFSIZ
77  #else  #else
78  #define MBUFTHIRD 8192  #define MAXPATLEN 8192
79  #endif  #endif
80    
81    #define PATBUFSIZE (MAXPATLEN + 10)   /* Allows for prefix+suffix */
82    
83  /* Values for the "filenames" variable, which specifies options for file name  /* Values for the "filenames" variable, which specifies options for file name
84  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
85  all values greater than FN_DEFAULT. */  all values greater than FN_DEFAULT. */
86    
87  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 };
88    
89    /* File reading styles */
90    
91    enum { FR_PLAIN, FR_LIBZ, FR_LIBBZ2 };
92    
93  /* Actions for the -d and -D options */  /* Actions for the -d and -D options */
94    
# Line 91  enum { DEE_READ, DEE_SKIP }; Line 105  enum { DEE_READ, DEE_SKIP };
105    
106  enum { EL_LF, EL_CR, EL_CRLF, EL_ANY, EL_ANYCRLF };  enum { EL_LF, EL_CR, EL_CRLF, EL_ANY, EL_ANYCRLF };
107    
108    /* Binary file options */
109    
110    enum { BIN_BINARY, BIN_NOMATCH, BIN_TEXT };
111    
112    /* In newer versions of gcc, with FORTIFY_SOURCE set (the default in some
113    environments), a warning is issued if the value of fwrite() is ignored.
114    Unfortunately, casting to (void) does not suppress the warning. To get round
115    this, we use a macro that compiles a fudge. Oddly, this does not also seem to
116    apply to fprintf(). */
117    
118    #define FWRITE(a,b,c,d) if (fwrite(a,b,c,d)) {}
119    
120    
121    
122  /*************************************************  /*************************************************
# Line 114  static char *colour_string = (char *)"1; Line 140  static char *colour_string = (char *)"1;
140  static char *colour_option = NULL;  static char *colour_option = NULL;
141  static char *dee_option = NULL;  static char *dee_option = NULL;
142  static char *DEE_option = NULL;  static char *DEE_option = NULL;
143    static char *locale = NULL;
144    static char *main_buffer = NULL;
145  static char *newline = NULL;  static char *newline = NULL;
146  static char *pattern_filename = NULL;  static char *om_separator = (char *)"";
147  static char *stdin_name = (char *)"(standard input)";  static char *stdin_name = (char *)"(standard input)";
 static char *locale = NULL;  
148    
149  static const unsigned char *pcretables = NULL;  static const unsigned char *pcretables = NULL;
150    
 static int  pattern_count = 0;  
 static pcre **pattern_list = NULL;  
 static pcre_extra **hints_list = NULL;  
   
 static char *include_pattern = NULL;  
 static char *exclude_pattern = NULL;  
   
 static pcre *include_compiled = NULL;  
 static pcre *exclude_compiled = NULL;  
   
151  static int after_context = 0;  static int after_context = 0;
152  static int before_context = 0;  static int before_context = 0;
153    static int binary_files = BIN_BINARY;
154  static int both_context = 0;  static int both_context = 0;
155    static int bufthird = PCREGREP_BUFSIZE;
156    static int bufsize = 3*PCREGREP_BUFSIZE;
157    
158    #if defined HAVE_WINDOWS_H && HAVE_WINDOWS_H
159    static int dee_action = dee_SKIP;
160    #else
161  static int dee_action = dee_READ;  static int dee_action = dee_READ;
162    #endif
163    
164  static int DEE_action = DEE_READ;  static int DEE_action = DEE_READ;
165  static int error_count = 0;  static int error_count = 0;
166  static int filenames = FN_DEFAULT;  static int filenames = FN_DEFAULT;
167    static int pcre_options = 0;
168  static int process_options = 0;  static int process_options = 0;
169    
170    #ifdef SUPPORT_PCREGREP_JIT
171    static int study_options = PCRE_STUDY_JIT_COMPILE;
172    #else
173    static int study_options = 0;
174    #endif
175    
176    static unsigned long int match_limit = 0;
177    static unsigned long int match_limit_recursion = 0;
178    
179  static BOOL count_only = FALSE;  static BOOL count_only = FALSE;
180  static BOOL do_colour = FALSE;  static BOOL do_colour = FALSE;
181    static BOOL file_offsets = FALSE;
182  static BOOL hyphenpending = FALSE;  static BOOL hyphenpending = FALSE;
183  static BOOL invert = FALSE;  static BOOL invert = FALSE;
184    static BOOL line_buffered = FALSE;
185    static BOOL line_offsets = FALSE;
186  static BOOL multiline = FALSE;  static BOOL multiline = FALSE;
187  static BOOL number = FALSE;  static BOOL number = FALSE;
188  static BOOL only_matching = FALSE;  static BOOL omit_zero_count = FALSE;
189    static BOOL resource_error = FALSE;
190  static BOOL quiet = FALSE;  static BOOL quiet = FALSE;
191    static BOOL show_only_matching = FALSE;
192  static BOOL silent = FALSE;  static BOOL silent = FALSE;
193  static BOOL utf8 = FALSE;  static BOOL utf8 = FALSE;
194    
195    /* Structure for list of --only-matching capturing numbers. */
196    
197    typedef struct omstr {
198      struct omstr *next;
199      int groupnum;
200    } omstr;
201    
202    static omstr *only_matching = NULL;
203    static omstr *only_matching_last = NULL;
204    
205    /* Structure for holding the two variables that describe a number chain. */
206    
207    typedef struct omdatastr {
208      omstr **anchor;
209      omstr **lastptr;
210    } omdatastr;
211    
212    static omdatastr only_matching_data = { &only_matching, &only_matching_last };
213    
214    /* Structure for list of file names (for -f and --{in,ex}clude-from) */
215    
216    typedef struct fnstr {
217      struct fnstr *next;
218      char *name;
219    } fnstr;
220    
221    static fnstr *exclude_from = NULL;
222    static fnstr *exclude_from_last = NULL;
223    static fnstr *include_from = NULL;
224    static fnstr *include_from_last = NULL;
225    
226    static fnstr *file_lists = NULL;
227    static fnstr *file_lists_last = NULL;
228    static fnstr *pattern_files = NULL;
229    static fnstr *pattern_files_last = NULL;
230    
231    /* Structure for holding the two variables that describe a file name chain. */
232    
233    typedef struct fndatastr {
234      fnstr **anchor;
235      fnstr **lastptr;
236    } fndatastr;
237    
238    static fndatastr exclude_from_data = { &exclude_from, &exclude_from_last };
239    static fndatastr include_from_data = { &include_from, &include_from_last };
240    static fndatastr file_lists_data = { &file_lists, &file_lists_last };
241    static fndatastr pattern_files_data = { &pattern_files, &pattern_files_last };
242    
243    /* Structure for pattern and its compiled form; used for matching patterns and
244    also for include/exclude patterns. */
245    
246    typedef struct patstr {
247      struct patstr *next;
248      char *string;
249      pcre *compiled;
250      pcre_extra *hint;
251    } patstr;
252    
253    static patstr *patterns = NULL;
254    static patstr *patterns_last = NULL;
255    static patstr *include_patterns = NULL;
256    static patstr *include_patterns_last = NULL;
257    static patstr *exclude_patterns = NULL;
258    static patstr *exclude_patterns_last = NULL;
259    static patstr *include_dir_patterns = NULL;
260    static patstr *include_dir_patterns_last = NULL;
261    static patstr *exclude_dir_patterns = NULL;
262    static patstr *exclude_dir_patterns_last = NULL;
263    
264    /* Structure holding the two variables that describe a pattern chain. A pointer
265    to such structures is used for each appropriate option. */
266    
267    typedef struct patdatastr {
268      patstr **anchor;
269      patstr **lastptr;
270    } patdatastr;
271    
272    static patdatastr match_patdata = { &patterns, &patterns_last };
273    static patdatastr include_patdata = { &include_patterns, &include_patterns_last };
274    static patdatastr exclude_patdata = { &exclude_patterns, &exclude_patterns_last };
275    static patdatastr include_dir_patdata = { &include_dir_patterns, &include_dir_patterns_last };
276    static patdatastr exclude_dir_patdata = { &exclude_dir_patterns, &exclude_dir_patterns_last };
277    
278    static patstr **incexlist[4] = { &include_patterns, &exclude_patterns,
279                                     &include_dir_patterns, &exclude_dir_patterns };
280    
281    static const char *incexname[4] = { "--include", "--exclude",
282                                        "--include-dir", "--exclude-dir" };
283    
284  /* Structure for options and list of them */  /* Structure for options and list of them */
285    
286  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,
287         OP_PATLIST };         OP_OP_NUMBER, OP_OP_NUMBERS, OP_PATLIST, OP_FILELIST, OP_BINFILES };
288    
289  typedef struct option_item {  typedef struct option_item {
290    int type;    int type;
# Line 167  typedef struct option_item { Line 297  typedef struct option_item {
297  /* 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
298  used to identify them. */  used to identify them. */
299    
300  #define N_COLOUR    (-1)  #define N_COLOUR       (-1)
301  #define N_EXCLUDE   (-2)  #define N_EXCLUDE      (-2)
302  #define N_HELP      (-3)  #define N_EXCLUDE_DIR  (-3)
303  #define N_INCLUDE   (-4)  #define N_HELP         (-4)
304  #define N_LABEL     (-5)  #define N_INCLUDE      (-5)
305  #define N_LOCALE    (-6)  #define N_INCLUDE_DIR  (-6)
306  #define N_NULL      (-7)  #define N_LABEL        (-7)
307    #define N_LOCALE       (-8)
308    #define N_NULL         (-9)
309    #define N_LOFFSETS     (-10)
310    #define N_FOFFSETS     (-11)
311    #define N_LBUFFER      (-12)
312    #define N_M_LIMIT      (-13)
313    #define N_M_LIMIT_REC  (-14)
314    #define N_BUFSIZE      (-15)
315    #define N_NOJIT        (-16)
316    #define N_FILE_LIST    (-17)
317    #define N_BINARY_FILES (-18)
318    #define N_EXCLUDE_FROM (-19)
319    #define N_INCLUDE_FROM (-20)
320    #define N_OM_SEPARATOR (-21)
321    
322  static option_item optionlist[] = {  static option_item optionlist[] = {
323    { OP_NODATA,    N_NULL,   NULL,              "",              "  terminate options" },    { OP_NODATA,     N_NULL,   NULL,              "",              "terminate options" },
324    { OP_NODATA,    N_HELP,   NULL,              "help",          "display this help and exit" },    { OP_NODATA,     N_HELP,   NULL,              "help",          "display this help and exit" },
325    { 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" },
326    { OP_NUMBER,    'B',      &before_context,   "before-context=number", "set number of prior context lines" },    { OP_NODATA,     'a',      NULL,              "text",          "treat binary files as text" },
327    { OP_OP_STRING, N_COLOUR, &colour_option,    "color=option",  "matched text color option" },    { OP_NUMBER,     'B',      &before_context,   "before-context=number", "set number of prior context lines" },
328    { OP_NUMBER,    'C',      &both_context,     "context=number", "set number of context lines, before & after" },    { OP_BINFILES,   N_BINARY_FILES, NULL,        "binary-files=word", "set treatment of binary files" },
329    { OP_NODATA,    'c',      NULL,              "count",         "print only a count of matching lines per FILE" },    { OP_NUMBER,     N_BUFSIZE,&bufthird,         "buffer-size=number", "set processing buffer size parameter" },
330    { OP_OP_STRING, N_COLOUR, &colour_option,    "colour=option", "matched text colour option" },    { OP_OP_STRING,  N_COLOUR, &colour_option,    "color=option",  "matched text color option" },
331    { OP_STRING,    'D',      &DEE_option,       "devices=action","how to handle devices, FIFOs, and sockets" },    { OP_OP_STRING,  N_COLOUR, &colour_option,    "colour=option", "matched text colour option" },
332    { OP_STRING,    'd',      &dee_option,       "directories=action", "how to handle directories" },    { OP_NUMBER,     'C',      &both_context,     "context=number", "set number of context lines, before & after" },
333    { OP_PATLIST,   'e',      NULL,              "regex(p)",      "specify pattern (may be used more than once)" },    { OP_NODATA,     'c',      NULL,              "count",         "print only a count of matching lines per FILE" },
334    { OP_NODATA,    'F',      NULL,              "fixed_strings", "patterns are sets of newline-separated strings" },    { OP_STRING,     'D',      &DEE_option,       "devices=action","how to handle devices, FIFOs, and sockets" },
335    { OP_STRING,    'f',      &pattern_filename, "file=path",     "read patterns from file" },    { OP_STRING,     'd',      &dee_option,       "directories=action", "how to handle directories" },
336    { OP_NODATA,    'H',      NULL,              "with-filename", "force the prefixing filename on output" },    { OP_PATLIST,    'e',      &match_patdata,    "regex(p)=pattern", "specify pattern (may be used more than once)" },
337    { OP_NODATA,    'h',      NULL,              "no-filename",   "suppress the prefixing filename on output" },    { OP_NODATA,     'F',      NULL,              "fixed-strings", "patterns are sets of newline-separated strings" },
338    { OP_NODATA,    'i',      NULL,              "ignore-case",   "ignore case distinctions" },    { OP_FILELIST,   'f',      &pattern_files_data, "file=path",   "read patterns from file" },
339    { OP_NODATA,    'l',      NULL,              "files-with-matches", "print only FILE names containing matches" },    { OP_FILELIST,   N_FILE_LIST, &file_lists_data, "file-list=path","read files to search from file" },
340    { OP_NODATA,    'L',      NULL,              "files-without-match","print only FILE names not containing matches" },    { OP_NODATA,     N_FOFFSETS, NULL,            "file-offsets",  "output file offsets, not text" },
341    { OP_STRING,    N_LABEL,  &stdin_name,       "label=name",    "set name for standard input" },    { OP_NODATA,     'H',      NULL,              "with-filename", "force the prefixing filename on output" },
342    { OP_STRING,    N_LOCALE, &locale,           "locale=locale", "use the named locale" },    { OP_NODATA,     'h',      NULL,              "no-filename",   "suppress the prefixing filename on output" },
343    { OP_NODATA,    'M',      NULL,              "multiline",     "run in multiline mode" },    { OP_NODATA,     'I',      NULL,              "",              "treat binary files as not matching (ignore)" },
344    { OP_STRING,    'N',      &newline,          "newline=type",  "specify newline type (CR, LF, CRLF, ANYCRLF or ANY)" },    { OP_NODATA,     'i',      NULL,              "ignore-case",   "ignore case distinctions" },
345    { OP_NODATA,    'n',      NULL,              "line-number",   "print line number with output lines" },  #ifdef SUPPORT_PCREGREP_JIT
346    { OP_NODATA,    'o',      NULL,              "only-matching", "show only the part of the line that matched" },    { OP_NODATA,     N_NOJIT,  NULL,              "no-jit",        "do not use just-in-time compiler optimization" },
347    { OP_NODATA,    'q',      NULL,              "quiet",         "suppress output, just set return code" },  #else
348    { OP_NODATA,    'r',      NULL,              "recursive",     "recursively scan sub-directories" },    { OP_NODATA,     N_NOJIT,  NULL,              "no-jit",        "ignored: this pcregrep does not support JIT" },
349    { OP_STRING,    N_EXCLUDE,&exclude_pattern,  "exclude=pattern","exclude matching files when recursing" },  #endif
350    { OP_STRING,    N_INCLUDE,&include_pattern,  "include=pattern","include matching files when recursing" },    { OP_NODATA,     'l',      NULL,              "files-with-matches", "print only FILE names containing matches" },
351      { OP_NODATA,     'L',      NULL,              "files-without-match","print only FILE names not containing matches" },
352      { OP_STRING,     N_LABEL,  &stdin_name,       "label=name",    "set name for standard input" },
353      { OP_NODATA,     N_LBUFFER, NULL,             "line-buffered", "use line buffering" },
354      { OP_NODATA,     N_LOFFSETS, NULL,            "line-offsets",  "output line numbers and offsets, not text" },
355      { OP_STRING,     N_LOCALE, &locale,           "locale=locale", "use the named locale" },
356      { OP_LONGNUMBER, N_M_LIMIT, &match_limit,     "match-limit=number", "set PCRE match limit option" },
357      { OP_LONGNUMBER, N_M_LIMIT_REC, &match_limit_recursion, "recursion-limit=number", "set PCRE match recursion limit option" },
358      { OP_NODATA,     'M',      NULL,              "multiline",     "run in multiline mode" },
359      { OP_STRING,     'N',      &newline,          "newline=type",  "set newline type (CR, LF, CRLF, ANYCRLF or ANY)" },
360      { OP_NODATA,     'n',      NULL,              "line-number",   "print line number with output lines" },
361      { OP_OP_NUMBERS, 'o',      &only_matching_data, "only-matching=n", "show only the part of the line that matched" },
362      { OP_STRING,     N_OM_SEPARATOR, &om_separator, "om-separator=text", "set separator for multiple -o output" },
363      { OP_NODATA,     'q',      NULL,              "quiet",         "suppress output, just set return code" },
364      { OP_NODATA,     'r',      NULL,              "recursive",     "recursively scan sub-directories" },
365      { OP_PATLIST,    N_EXCLUDE,&exclude_patdata,  "exclude=pattern","exclude matching files when recursing" },
366      { OP_PATLIST,    N_INCLUDE,&include_patdata,  "include=pattern","include matching files when recursing" },
367      { OP_PATLIST,    N_EXCLUDE_DIR,&exclude_dir_patdata, "exclude-dir=pattern","exclude matching directories when recursing" },
368      { OP_PATLIST,    N_INCLUDE_DIR,&include_dir_patdata, "include-dir=pattern","include matching directories when recursing" },
369      { OP_FILELIST,   N_EXCLUDE_FROM,&exclude_from_data, "exclude-from=path", "read exclude list from file" },
370      { OP_FILELIST,   N_INCLUDE_FROM,&include_from_data, "include-from=path", "read include list from file" },
371    
372      /* These two were accidentally implemented with underscores instead of
373      hyphens in the option names. As this was not discovered for several releases,
374      the incorrect versions are left in the table for compatibility. However, the
375      --help function misses out any option that has an underscore in its name. */
376    
377      { OP_PATLIST,   N_EXCLUDE_DIR,&exclude_dir_patdata, "exclude_dir=pattern","exclude matching directories when recursing" },
378      { OP_PATLIST,   N_INCLUDE_DIR,&include_dir_patdata, "include_dir=pattern","include matching directories when recursing" },
379    
380  #ifdef JFRIEDL_DEBUG  #ifdef JFRIEDL_DEBUG
381    { 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" },
382  #endif  #endif
# Line 219  static option_item optionlist[] = { Line 392  static option_item optionlist[] = {
392  /* Tables for prefixing and suffixing patterns, according to the -w, -x, and -F  /* Tables for prefixing and suffixing patterns, according to the -w, -x, and -F
393  options. These set the 1, 2, and 4 bits in process_options, respectively. Note  options. These set the 1, 2, and 4 bits in process_options, respectively. Note
394  that the combination of -w and -x has the same effect as -x on its own, so we  that the combination of -w and -x has the same effect as -x on its own, so we
395  can treat them as the same. */  can treat them as the same. Note that the MAXPATLEN macro assumes the longest
396    prefix+suffix is 10 characters; if anything longer is added, it must be
397    adjusted. */
398    
399  static const char *prefix[] = {  static const char *prefix[] = {
400    "", "\\b", "^(?:", "^(?:", "\\Q", "\\b\\Q", "^(?:\\Q", "^(?:\\Q" };    "", "\\b", "^(?:", "^(?:", "\\Q", "\\b\\Q", "^(?:\\Q", "^(?:\\Q" };
# Line 240  const char utf8_table4[] = { Line 415  const char utf8_table4[] = {
415    
416    
417  /*************************************************  /*************************************************
418    *         Exit from the program                  *
419    *************************************************/
420    
421    /* If there has been a resource error, give a suitable message.
422    
423    Argument:  the return code
424    Returns:   does not return
425    */
426    
427    static void
428    pcregrep_exit(int rc)
429    {
430    if (resource_error)
431      {
432      fprintf(stderr, "pcregrep: Error %d, %d or %d means that a resource limit "
433        "was exceeded.\n", PCRE_ERROR_MATCHLIMIT, PCRE_ERROR_RECURSIONLIMIT,
434        PCRE_ERROR_JIT_STACKLIMIT);
435      fprintf(stderr, "pcregrep: Check your regex for nested unlimited loops.\n");
436      }
437    exit(rc);
438    }
439    
440    
441    /*************************************************
442    *          Add item to chain of patterns         *
443    *************************************************/
444    
445    /* Used to add an item onto a chain, or just return an unconnected item if the
446    "after" argument is NULL.
447    
448    Arguments:
449      s          pattern string to add
450      after      if not NULL points to item to insert after
451    
452    Returns:     new pattern block
453    */
454    
455    static patstr *
456    add_pattern(char *s, patstr *after)
457    {
458    patstr *p = (patstr *)malloc(sizeof(patstr));
459    if (p == NULL)
460      {
461      fprintf(stderr, "pcregrep: malloc failed\n");
462      pcregrep_exit(2);
463      }
464    if (strlen(s) > MAXPATLEN)
465      {
466      fprintf(stderr, "pcregrep: pattern is too long (limit is %d bytes)\n",
467        MAXPATLEN);
468      return NULL;
469      }
470    p->next = NULL;
471    p->string = s;
472    p->compiled = NULL;
473    p->hint = NULL;
474    
475    if (after != NULL)
476      {
477      p->next = after->next;
478      after->next = p;
479      }
480    return p;
481    }
482    
483    
484    /*************************************************
485    *           Free chain of patterns               *
486    *************************************************/
487    
488    /* Used for several chains of patterns.
489    
490    Argument: pointer to start of chain
491    Returns:  nothing
492    */
493    
494    static void
495    free_pattern_chain(patstr *pc)
496    {
497    while (pc != NULL)
498      {
499      patstr *p = pc;
500      pc = p->next;
501      if (p->hint != NULL) pcre_free_study(p->hint);
502      if (p->compiled != NULL) pcre_free(p->compiled);
503      free(p);
504      }
505    }
506    
507    
508    /*************************************************
509    *           Free chain of file names             *
510    *************************************************/
511    
512    /*
513    Argument: pointer to start of chain
514    Returns:  nothing
515    */
516    
517    static void
518    free_file_chain(fnstr *fn)
519    {
520    while (fn != NULL)
521      {
522      fnstr *f = fn;
523      fn = f->next;
524      free(f);
525      }
526    }
527    
528    
529    /*************************************************
530  *            OS-specific functions               *  *            OS-specific functions               *
531  *************************************************/  *************************************************/
532    
# Line 255  although at present the only ones are fo Line 542  although at present the only ones are fo
542  #include <dirent.h>  #include <dirent.h>
543    
544  typedef DIR directory_type;  typedef DIR directory_type;
545    #define FILESEP '/'
546    
547  static int  static int
548  isdirectory(char *filename)  isdirectory(char *filename)
# Line 262  isdirectory(char *filename) Line 550  isdirectory(char *filename)
550  struct stat statbuf;  struct stat statbuf;
551  if (stat(filename, &statbuf) < 0)  if (stat(filename, &statbuf) < 0)
552    return 0;        /* In the expectation that opening as a file will fail */    return 0;        /* In the expectation that opening as a file will fail */
553  return ((statbuf.st_mode & S_IFMT) == S_IFDIR)? '/' : 0;  return (statbuf.st_mode & S_IFMT) == S_IFDIR;
554  }  }
555    
556  static directory_type *  static directory_type *
# Line 303  return (statbuf.st_mode & S_IFMT) == S_I Line 591  return (statbuf.st_mode & S_IFMT) == S_I
591  }  }
592    
593    
594  /************* Test stdout for being a terminal in Unix **********/  /************* Test for a terminal in Unix **********/
595    
596  static BOOL  static BOOL
597  is_stdout_tty(void)  is_stdout_tty(void)
# Line 311  is_stdout_tty(void) Line 599  is_stdout_tty(void)
599  return isatty(fileno(stdout));  return isatty(fileno(stdout));
600  }  }
601    
602    static BOOL
603    is_file_tty(FILE *f)
604    {
605    return isatty(fileno(f));
606    }
607    
608    
609  /************* Directory scanning in Win32 ***********/  /************* Directory scanning in Win32 ***********/
610    
611  /* 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
612  Lionel Fourquaux. David Burgess added a patch to define INVALID_FILE_ATTRIBUTES  Lionel Fourquaux. David Burgess added a patch to define INVALID_FILE_ATTRIBUTES
613  when it did not exist. */  when it did not exist. David Byron added a patch that moved the #include of
614    <windows.h> to before the INVALID_FILE_ATTRIBUTES definition rather than after.
615    The double test below stops gcc 4.4.4 grumbling that HAVE_WINDOWS_H is
616    undefined when it is indeed undefined. */
617    
618  #elif HAVE_WINDOWS_H  #elif defined HAVE_WINDOWS_H && HAVE_WINDOWS_H
619    
620  #ifndef STRICT  #ifndef STRICT
621  # define STRICT  # define STRICT
# Line 327  when it did not exist. */ Line 623  when it did not exist. */
623  #ifndef WIN32_LEAN_AND_MEAN  #ifndef WIN32_LEAN_AND_MEAN
624  # define WIN32_LEAN_AND_MEAN  # define WIN32_LEAN_AND_MEAN
625  #endif  #endif
626    
627    #include <windows.h>
628    
629  #ifndef INVALID_FILE_ATTRIBUTES  #ifndef INVALID_FILE_ATTRIBUTES
630  #define INVALID_FILE_ATTRIBUTES 0xFFFFFFFF  #define INVALID_FILE_ATTRIBUTES 0xFFFFFFFF
631  #endif  #endif
632    
 #include <windows.h>  
   
633  typedef struct directory_type  typedef struct directory_type
634  {  {
635  HANDLE handle;  HANDLE handle;
# Line 340  BOOL first; Line 637  BOOL first;
637  WIN32_FIND_DATA data;  WIN32_FIND_DATA data;
638  } directory_type;  } directory_type;
639    
640    #define FILESEP '/'
641    
642  int  int
643  isdirectory(char *filename)  isdirectory(char *filename)
644  {  {
645  DWORD attr = GetFileAttributes(filename);  DWORD attr = GetFileAttributes(filename);
646  if (attr == INVALID_FILE_ATTRIBUTES)  if (attr == INVALID_FILE_ATTRIBUTES)
647    return 0;    return 0;
648  return ((attr & FILE_ATTRIBUTE_DIRECTORY) != 0) ? '/' : 0;  return (attr & FILE_ATTRIBUTE_DIRECTORY) != 0;
649  }  }
650    
651  directory_type *  directory_type *
# Line 357  char *pattern; Line 656  char *pattern;
656  directory_type *dir;  directory_type *dir;
657  DWORD err;  DWORD err;
658  len = strlen(filename);  len = strlen(filename);
659  pattern = (char *) malloc(len + 3);  pattern = (char *)malloc(len + 3);
660  dir = (directory_type *) malloc(sizeof(*dir));  dir = (directory_type *)malloc(sizeof(*dir));
661  if ((pattern == NULL) || (dir == NULL))  if ((pattern == NULL) || (dir == NULL))
662    {    {
663    fprintf(stderr, "pcregrep: malloc failed\n");    fprintf(stderr, "pcregrep: malloc failed\n");
664    exit(2);    pcregrep_exit(2);
665    }    }
666  memcpy(pattern, filename, len);  memcpy(pattern, filename, len);
667  memcpy(&(pattern[len]), "\\*", 3);  memcpy(&(pattern[len]), "\\*", 3);
# Line 417  regular if they are not directories. */ Line 716  regular if they are not directories. */
716    
717  int isregfile(char *filename)  int isregfile(char *filename)
718  {  {
719  return !isdirectory(filename)  return !isdirectory(filename);
720  }  }
721    
722    
723  /************* Test stdout for being a terminal in Win32 **********/  /************* Test for a terminal in Win32 **********/
724    
725  /* I don't know how to do this; assume never */  /* I don't know how to do this; assume never */
726    
727  static BOOL  static BOOL
728  is_stdout_tty(void)  is_stdout_tty(void)
729  {  {
730  FALSE;  return FALSE;
731    }
732    
733    static BOOL
734    is_file_tty(FILE *f)
735    {
736    return FALSE;
737  }  }
738    
739    
# Line 438  FALSE; Line 743  FALSE;
743    
744  #else  #else
745    
746    #define FILESEP 0
747  typedef void directory_type;  typedef void directory_type;
748    
749  int isdirectory(char *filename) { return 0; }  int isdirectory(char *filename) { return 0; }
# Line 453  void closedirectory(directory_type *dir) Line 759  void closedirectory(directory_type *dir)
759  int isregfile(char *filename) { return 1; }  int isregfile(char *filename) { return 1; }
760    
761    
762  /************* Test stdout for being a terminal when we can't do it **********/  /************* Test for a terminal when we can't do it **********/
763    
764  static BOOL  static BOOL
765  is_stdout_tty(void)  is_stdout_tty(void)
# Line 461  is_stdout_tty(void) Line 767  is_stdout_tty(void)
767  return FALSE;  return FALSE;
768  }  }
769    
770    static BOOL
771    is_file_tty(FILE *f)
772    {
773    return FALSE;
774    }
775    
776  #endif  #endif
777    
# Line 489  return sys_errlist[n]; Line 800  return sys_errlist[n];
800    
801    
802  /*************************************************  /*************************************************
803    *                Usage function                  *
804    *************************************************/
805    
806    static int
807    usage(int rc)
808    {
809    option_item *op;
810    fprintf(stderr, "Usage: pcregrep [-");
811    for (op = optionlist; op->one_char != 0; op++)
812      {
813      if (op->one_char > 0) fprintf(stderr, "%c", op->one_char);
814      }
815    fprintf(stderr, "] [long options] [pattern] [files]\n");
816    fprintf(stderr, "Type `pcregrep --help' for more information and the long "
817      "options.\n");
818    return rc;
819    }
820    
821    
822    
823    /*************************************************
824    *                Help function                   *
825    *************************************************/
826    
827    static void
828    help(void)
829    {
830    option_item *op;
831    
832    printf("Usage: pcregrep [OPTION]... [PATTERN] [FILE1 FILE2 ...]\n");
833    printf("Search for PATTERN in each FILE or standard input.\n");
834    printf("PATTERN must be present if neither -e nor -f is used.\n");
835    printf("\"-\" can be used as a file name to mean STDIN.\n");
836    
837    #ifdef SUPPORT_LIBZ
838    printf("Files whose names end in .gz are read using zlib.\n");
839    #endif
840    
841    #ifdef SUPPORT_LIBBZ2
842    printf("Files whose names end in .bz2 are read using bzlib2.\n");
843    #endif
844    
845    #if defined SUPPORT_LIBZ || defined SUPPORT_LIBBZ2
846    printf("Other files and the standard input are read as plain files.\n\n");
847    #else
848    printf("All files are read as plain files, without any interpretation.\n\n");
849    #endif
850    
851    printf("Example: pcregrep -i 'hello.*world' menu.h main.c\n\n");
852    printf("Options:\n");
853    
854    for (op = optionlist; op->one_char != 0; op++)
855      {
856      int n;
857      char s[4];
858    
859      /* Two options were accidentally implemented and documented with underscores
860      instead of hyphens in their names, something that was not noticed for quite a
861      few releases. When fixing this, I left the underscored versions in the list
862      in case people were using them. However, we don't want to display them in the
863      help data. There are no other options that contain underscores, and we do not
864      expect ever to implement such options. Therefore, just omit any option that
865      contains an underscore. */
866    
867      if (strchr(op->long_name, '_') != NULL) continue;
868    
869      if (op->one_char > 0 && (op->long_name)[0] == 0)
870        n = 31 - printf("  -%c", op->one_char);
871      else
872        {
873        if (op->one_char > 0) sprintf(s, "-%c,", op->one_char);
874          else strcpy(s, "   ");
875        n = 31 - printf("  %s --%s", s, op->long_name);
876        }
877    
878      if (n < 1) n = 1;
879      printf("%.*s%s\n", n, "                           ", op->help_text);
880      }
881    
882    printf("\nNumbers may be followed by K or M, e.g. --buffer-size=100K.\n");
883    printf("The default value for --buffer-size is %d.\n", PCREGREP_BUFSIZE);
884    printf("When reading patterns or file names from a file, trailing white\n");
885    printf("space is removed and blank lines are ignored.\n");
886    printf("The maximum size of any pattern is %d bytes.\n", MAXPATLEN);
887    
888    printf("\nWith no FILEs, read standard input. If fewer than two FILEs given, assume -h.\n");
889    printf("Exit status is 0 if any matches, 1 if no matches, and 2 if trouble.\n");
890    }
891    
892    
893    
894    /*************************************************
895    *            Test exclude/includes               *
896    *************************************************/
897    
898    /* If any exclude pattern matches, the path is excluded. Otherwise, unless
899    there are no includes, the path must match an include pattern.
900    
901    Arguments:
902      path      the path to be matched
903      ip        the chain of include patterns
904      ep        the chain of exclude patterns
905    
906    Returns:    TRUE if the path is not excluded
907    */
908    
909    static BOOL
910    test_incexc(char *path, patstr *ip, patstr *ep)
911    {
912    int plen = strlen(path);
913    
914    for (; ep != NULL; ep = ep->next)
915      {
916      if (pcre_exec(ep->compiled, NULL, path, plen, 0, 0, NULL, 0) >= 0)
917        return FALSE;
918      }
919    
920    if (ip == NULL) return TRUE;
921    
922    for (; ip != NULL; ip = ip->next)
923      {
924      if (pcre_exec(ip->compiled, NULL, path, plen, 0, 0, NULL, 0) >= 0)
925        return TRUE;
926      }
927    
928    return FALSE;
929    }
930    
931    
932    
933    /*************************************************
934    *         Decode integer argument value          *
935    *************************************************/
936    
937    /* Integer arguments can be followed by K or M. Avoid the use of strtoul()
938    because SunOS4 doesn't have it. This is used only for unpicking arguments, so
939    just keep it simple.
940    
941    Arguments:
942      option_data   the option data string
943      op            the option item (for error messages)
944      longop        TRUE if option given in long form
945    
946    Returns:        a long integer
947    */
948    
949    static long int
950    decode_number(char *option_data, option_item *op, BOOL longop)
951    {
952    unsigned long int n = 0;
953    char *endptr = option_data;
954    while (*endptr != 0 && isspace((unsigned char)(*endptr))) endptr++;
955    while (isdigit((unsigned char)(*endptr)))
956      n = n * 10 + (int)(*endptr++ - '0');
957    if (toupper(*endptr) == 'K')
958      {
959      n *= 1024;
960      endptr++;
961      }
962    else if (toupper(*endptr) == 'M')
963      {
964      n *= 1024*1024;
965      endptr++;
966      }
967    
968    if (*endptr != 0)   /* Error */
969      {
970      if (longop)
971        {
972        char *equals = strchr(op->long_name, '=');
973        int nlen = (equals == NULL)? (int)strlen(op->long_name) :
974          (int)(equals - op->long_name);
975        fprintf(stderr, "pcregrep: Malformed number \"%s\" after --%.*s\n",
976          option_data, nlen, op->long_name);
977        }
978      else
979        fprintf(stderr, "pcregrep: Malformed number \"%s\" after -%c\n",
980          option_data, op->one_char);
981      pcregrep_exit(usage(2));
982      }
983    
984    return n;
985    }
986    
987    
988    
989    /*************************************************
990    *       Add item to a chain of numbers           *
991    *************************************************/
992    
993    /* Used to add an item onto a chain, or just return an unconnected item if the
994    "after" argument is NULL.
995    
996    Arguments:
997      n          the number to add
998      after      if not NULL points to item to insert after
999    
1000    Returns:     new number block
1001    */
1002    
1003    static omstr *
1004    add_number(int n, omstr *after)
1005    {
1006    omstr *om = (omstr *)malloc(sizeof(omstr));
1007    
1008    if (om == NULL)
1009      {
1010      fprintf(stderr, "pcregrep: malloc failed\n");
1011      pcregrep_exit(2);
1012      }
1013    om->next = NULL;
1014    om->groupnum = n;
1015    
1016    if (after != NULL)
1017      {
1018      om->next = after->next;
1019      after->next = om;
1020      }
1021    return om;
1022    }
1023    
1024    
1025    
1026    /*************************************************
1027    *            Read one line of input              *
1028    *************************************************/
1029    
1030    /* Normally, input is read using fread() into a large buffer, so many lines may
1031    be read at once. However, doing this for tty input means that no output appears
1032    until a lot of input has been typed. Instead, tty input is handled line by
1033    line. We cannot use fgets() for this, because it does not stop at a binary
1034    zero, and therefore there is no way of telling how many characters it has read,
1035    because there may be binary zeros embedded in the data.
1036    
1037    Arguments:
1038      buffer     the buffer to read into
1039      length     the maximum number of characters to read
1040      f          the file
1041    
1042    Returns:     the number of characters read, zero at end of file
1043    */
1044    
1045    static unsigned int
1046    read_one_line(char *buffer, int length, FILE *f)
1047    {
1048    int c;
1049    int yield = 0;
1050    while ((c = fgetc(f)) != EOF)
1051      {
1052      buffer[yield++] = c;
1053      if (c == '\n' || yield >= length) break;
1054      }
1055    return yield;
1056    }
1057    
1058    
1059    
1060    /*************************************************
1061  *             Find end of line                   *  *             Find end of line                   *
1062  *************************************************/  *************************************************/
1063    
# Line 500  Arguments: Line 1069  Arguments:
1069    endptr    end of available data    endptr    end of available data
1070    lenptr    where to put the length of the eol sequence    lenptr    where to put the length of the eol sequence
1071    
1072  Returns:    pointer to the last byte of the line  Returns:    pointer after the last byte of the line,
1073                including the newline byte(s)
1074  */  */
1075    
1076  static char *  static char *
# Line 569  switch(endlinetype) Line 1139  switch(endlinetype)
1139    
1140      switch (c)      switch (c)
1141        {        {
1142        case 0x0a:    /* LF */        case '\n':
1143        *lenptr = 1;        *lenptr = 1;
1144        return p;        return p;
1145    
1146        case 0x0d:    /* CR */        case '\r':
1147        if (p < endptr && *p == 0x0a)        if (p < endptr && *p == '\n')
1148          {          {
1149          *lenptr = 2;          *lenptr = 2;
1150          p++;          p++;
# Line 613  switch(endlinetype) Line 1183  switch(endlinetype)
1183    
1184      switch (c)      switch (c)
1185        {        {
1186        case 0x0a:    /* LF */        case '\n':    /* LF */
1187        case 0x0b:    /* VT */        case '\v':    /* VT */
1188        case 0x0c:    /* FF */        case '\f':    /* FF */
1189        *lenptr = 1;        *lenptr = 1;
1190        return p;        return p;
1191    
1192        case 0x0d:    /* CR */        case '\r':    /* CR */
1193        if (p < endptr && *p == 0x0a)        if (p < endptr && *p == '\n')
1194          {          {
1195          *lenptr = 2;          *lenptr = 2;
1196          p++;          p++;
# Line 628  switch(endlinetype) Line 1198  switch(endlinetype)
1198        else *lenptr = 1;        else *lenptr = 1;
1199        return p;        return p;
1200    
1201        case 0x85:    /* NEL */  #ifndef EBCDIC
1202          case 0x85:    /* Unicode NEL */
1203        *lenptr = utf8? 2 : 1;        *lenptr = utf8? 2 : 1;
1204        return p;        return p;
1205    
1206        case 0x2028:  /* LS */        case 0x2028:  /* Unicode LS */
1207        case 0x2029:  /* PS */        case 0x2029:  /* Unicode PS */
1208        *lenptr = 3;        *lenptr = 3;
1209        return p;        return p;
1210    #endif  /* Not EBCDIC */
1211    
1212        default:        default:
1213        break;        break;
# Line 694  switch(endlinetype) Line 1266  switch(endlinetype)
1266    
1267    while (p > startptr)    while (p > startptr)
1268      {      {
1269      register int c;      register unsigned int c;
1270      char *pp = p - 1;      char *pp = p - 1;
1271    
1272      if (utf8)      if (utf8)
# Line 719  switch(endlinetype) Line 1291  switch(endlinetype)
1291    
1292      if (endlinetype == EL_ANYCRLF) switch (c)      if (endlinetype == EL_ANYCRLF) switch (c)
1293        {        {
1294        case 0x0a:    /* LF */        case '\n':    /* LF */
1295        case 0x0d:    /* CR */        case '\r':    /* CR */
1296        return p;        return p;
1297    
1298        default:        default:
# Line 729  switch(endlinetype) Line 1301  switch(endlinetype)
1301    
1302      else switch (c)      else switch (c)
1303        {        {
1304        case 0x0a:    /* LF */        case '\n':    /* LF */
1305        case 0x0b:    /* VT */        case '\v':    /* VT */
1306        case 0x0c:    /* FF */        case '\f':    /* FF */
1307        case 0x0d:    /* CR */        case '\r':    /* CR */
1308        case 0x85:    /* NEL */  #ifndef EBCDIE
1309        case 0x2028:  /* LS */        case 0x85:    /* Unicode NEL */
1310        case 0x2029:  /* PS */        case 0x2028:  /* Unicode LS */
1311          case 0x2029:  /* Unicode PS */
1312    #endif  /* Not EBCDIC */
1313        return p;        return p;
1314    
1315        default:        default:
# Line 770  Arguments: Line 1344  Arguments:
1344  Returns:            nothing  Returns:            nothing
1345  */  */
1346    
1347  static void do_after_lines(int lastmatchnumber, char *lastmatchrestart,  static void
1348    char *endptr, char *printname)  do_after_lines(int lastmatchnumber, char *lastmatchrestart, char *endptr,
1349      char *printname)
1350  {  {
1351  if (after_context > 0 && lastmatchnumber > 0)  if (after_context > 0 && lastmatchnumber > 0)
1352    {    {
# Line 783  if (after_context > 0 && lastmatchnumber Line 1358  if (after_context > 0 && lastmatchnumber
1358      if (printname != NULL) fprintf(stdout, "%s-", printname);      if (printname != NULL) fprintf(stdout, "%s-", printname);
1359      if (number) fprintf(stdout, "%d-", lastmatchnumber++);      if (number) fprintf(stdout, "%d-", lastmatchnumber++);
1360      pp = end_of_line(pp, endptr, &ellength);      pp = end_of_line(pp, endptr, &ellength);
1361      fwrite(lastmatchrestart, 1, pp - lastmatchrestart, stdout);      FWRITE(lastmatchrestart, 1, pp - lastmatchrestart, stdout);
1362      lastmatchrestart = pp;      lastmatchrestart = pp;
1363      }      }
1364    hyphenpending = TRUE;    hyphenpending = TRUE;
# Line 793  if (after_context > 0 && lastmatchnumber Line 1368  if (after_context > 0 && lastmatchnumber
1368    
1369    
1370  /*************************************************  /*************************************************
1371    *   Apply patterns to subject till one matches   *
1372    *************************************************/
1373    
1374    /* This function is called to run through all patterns, looking for a match. It
1375    is used multiple times for the same subject when colouring is enabled, in order
1376    to find all possible matches.
1377    
1378    Arguments:
1379      matchptr     the start of the subject
1380      length       the length of the subject to match
1381      startoffset  where to start matching
1382      offsets      the offets vector to fill in
1383      mrc          address of where to put the result of pcre_exec()
1384    
1385    Returns:      TRUE if there was a match
1386                  FALSE if there was no match
1387                  invert if there was a non-fatal error
1388    */
1389    
1390    static BOOL
1391    match_patterns(char *matchptr, size_t length, int startoffset, int *offsets,
1392      int *mrc)
1393    {
1394    int i;
1395    size_t slen = length;
1396    patstr *p = patterns;
1397    const char *msg = "this text:\n\n";
1398    
1399    if (slen > 200)
1400      {
1401      slen = 200;
1402      msg = "text that starts:\n\n";
1403      }
1404    for (i = 1; p != NULL; p = p->next, i++)
1405      {
1406      *mrc = pcre_exec(p->compiled, p->hint, matchptr, (int)length,
1407        startoffset, PCRE_NOTEMPTY, offsets, OFFSET_SIZE);
1408      if (*mrc >= 0) return TRUE;
1409      if (*mrc == PCRE_ERROR_NOMATCH) continue;
1410      fprintf(stderr, "pcregrep: pcre_exec() gave error %d while matching ", *mrc);
1411      if (patterns->next != NULL) fprintf(stderr, "pattern number %d to ", i);
1412      fprintf(stderr, "%s", msg);
1413      FWRITE(matchptr, 1, slen, stderr);   /* In case binary zero included */
1414      fprintf(stderr, "\n\n");
1415      if (*mrc == PCRE_ERROR_MATCHLIMIT || *mrc == PCRE_ERROR_RECURSIONLIMIT ||
1416          *mrc == PCRE_ERROR_JIT_STACKLIMIT)
1417        resource_error = TRUE;
1418      if (error_count++ > 20)
1419        {
1420        fprintf(stderr, "pcregrep: Too many errors - abandoned.\n");
1421        pcregrep_exit(2);
1422        }
1423      return invert;    /* No more matching; don't show the line again */
1424      }
1425    
1426    return FALSE;  /* No match, no errors */
1427    }
1428    
1429    
1430    
1431    /*************************************************
1432  *            Grep an individual file             *  *            Grep an individual file             *
1433  *************************************************/  *************************************************/
1434    
1435  /* 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
1436  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
1437  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
1438  context printing or for multiline scanning. For large files, the pointer will  context printing or for multiline scanning. For large files, the pointer will
1439  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
1440  "before" context printing.  "before" context printing.
1441    
1442  Arguments:  Arguments:
1443    in           the fopened FILE stream    handle       the fopened FILE stream for a normal file
1444                   the gzFile pointer when reading is via libz
1445                   the BZFILE pointer when reading is via libbz2
1446      frtype       FR_PLAIN, FR_LIBZ, or FR_LIBBZ2
1447      filename     the file name or NULL (for errors)
1448    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
1449                 or NULL if the file name is not to be printed                 or NULL if the file name is not to be printed
1450                 it cannot be NULL if filenames[_nomatch]_only is set                 it cannot be NULL if filenames[_nomatch]_only is set
1451    
1452  Returns:       0 if there was at least one match  Returns:       0 if there was at least one match
1453                 1 otherwise (no matches)                 1 otherwise (no matches)
1454                   2 if an overlong line is encountered
1455                   3 if there is a read error on a .bz2 file
1456  */  */
1457    
1458  static int  static int
1459  pcregrep(FILE *in, char *printname)  pcregrep(void *handle, int frtype, char *filename, char *printname)
1460  {  {
1461  int rc = 1;  int rc = 1;
1462  int linenumber = 1;  int linenumber = 1;
1463  int lastmatchnumber = 0;  int lastmatchnumber = 0;
1464  int count = 0;  int count = 0;
1465  int offsets[99];  int filepos = 0;
1466    int offsets[OFFSET_SIZE];
1467  char *lastmatchrestart = NULL;  char *lastmatchrestart = NULL;
1468  char buffer[3*MBUFTHIRD];  char *ptr = main_buffer;
 char *ptr = buffer;  
1469  char *endptr;  char *endptr;
1470  size_t bufflength;  size_t bufflength;
1471    BOOL binary = FALSE;
1472  BOOL endhyphenpending = FALSE;  BOOL endhyphenpending = FALSE;
1473    BOOL input_line_buffered = line_buffered;
1474    FILE *in = NULL;                    /* Ensure initialized */
1475    
1476    #ifdef SUPPORT_LIBZ
1477    gzFile ingz = NULL;
1478    #endif
1479    
1480    #ifdef SUPPORT_LIBBZ2
1481    BZFILE *inbz2 = NULL;
1482    #endif
1483    
1484    
1485    /* Do the first read into the start of the buffer and set up the pointer to end
1486    of what we have. In the case of libz, a non-zipped .gz file will be read as a
1487    plain file. However, if a .bz2 file isn't actually bzipped, the first read will
1488    fail. */
1489    
1490    (void)frtype;
1491    
1492    #ifdef SUPPORT_LIBZ
1493    if (frtype == FR_LIBZ)
1494      {
1495      ingz = (gzFile)handle;
1496      bufflength = gzread (ingz, main_buffer, bufsize);
1497      }
1498    else
1499    #endif
1500    
1501    #ifdef SUPPORT_LIBBZ2
1502    if (frtype == FR_LIBBZ2)
1503      {
1504      inbz2 = (BZFILE *)handle;
1505      bufflength = BZ2_bzread(inbz2, main_buffer, bufsize);
1506      if ((int)bufflength < 0) return 2;   /* Gotcha: bufflength is size_t; */
1507      }                                    /* without the cast it is unsigned. */
1508    else
1509    #endif
1510    
1511      {
1512      in = (FILE *)handle;
1513      if (is_file_tty(in)) input_line_buffered = TRUE;
1514      bufflength = input_line_buffered?
1515        read_one_line(main_buffer, bufsize, in) :
1516        fread(main_buffer, 1, bufsize, in);
1517      }
1518    
1519    endptr = main_buffer + bufflength;
1520    
1521  /* Do the first read into the start of the buffer and set up the pointer to  /* Unless binary-files=text, see if we have a binary file. This uses the same
1522  end of what we have. */  rule as GNU grep, namely, a search for a binary zero byte near the start of the
1523    file. */
1524    
1525  bufflength = fread(buffer, 1, 3*MBUFTHIRD, in);  if (binary_files != BIN_TEXT)
1526  endptr = buffer + bufflength;    {
1527      binary =
1528        memchr(main_buffer, 0, (bufflength > 1024)? 1024 : bufflength) != NULL;
1529      if (binary && binary_files == BIN_NOMATCH) return 1;
1530      }
1531    
1532  /* 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
1533  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 841  way, the buffer is shifted left and re-f Line 1536  way, the buffer is shifted left and re-f
1536    
1537  while (ptr < endptr)  while (ptr < endptr)
1538    {    {
1539    int i, endlinelength;    int endlinelength;
1540    int mrc = 0;    int mrc = 0;
1541    BOOL match = FALSE;    int startoffset = 0;
1542      BOOL match;
1543      char *matchptr = ptr;
1544    char *t = ptr;    char *t = ptr;
1545    size_t length, linelength;    size_t length, linelength;
1546    
1547    /* 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
1548    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
1549    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
1550    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
1551    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
1552    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
1553      first line. */
1554    
1555    t = end_of_line(t, endptr, &endlinelength);    t = end_of_line(t, endptr, &endlinelength);
1556    linelength = t - ptr - endlinelength;    linelength = t - ptr - endlinelength;
1557    length = multiline? (size_t)(endptr - ptr) : linelength;    length = multiline? (size_t)(endptr - ptr) : linelength;
1558    
1559      /* Check to see if the line we are looking at extends right to the very end
1560      of the buffer without a line terminator. This means the line is too long to
1561      handle. */
1562    
1563      if (endlinelength == 0 && t == main_buffer + bufsize)
1564        {
1565        fprintf(stderr, "pcregrep: line %d%s%s is too long for the internal buffer\n"
1566                        "pcregrep: check the --buffer-size option\n",
1567                        linenumber,
1568                        (filename == NULL)? "" : " of file ",
1569                        (filename == NULL)? "" : filename);
1570        return 2;
1571        }
1572    
1573    /* Extra processing for Jeffrey Friedl's debugging. */    /* Extra processing for Jeffrey Friedl's debugging. */
1574    
1575  #ifdef JFRIEDL_DEBUG  #ifdef JFRIEDL_DEBUG
1576    if (jfriedl_XT || jfriedl_XR)    if (jfriedl_XT || jfriedl_XR)
1577    {    {
1578        #include <sys/time.h>  #     include <sys/time.h>
1579        #include <time.h>  #     include <time.h>
1580        struct timeval start_time, end_time;        struct timeval start_time, end_time;
1581        struct timezone dummy;        struct timezone dummy;
1582          int i;
1583    
1584        if (jfriedl_XT)        if (jfriedl_XT)
1585        {        {
# Line 875  while (ptr < endptr) Line 1588  while (ptr < endptr)
1588            ptr = malloc(newlen + 1);            ptr = malloc(newlen + 1);
1589            if (!ptr) {            if (!ptr) {
1590                    printf("out of memory");                    printf("out of memory");
1591                    exit(2);                    pcregrep_exit(2);
1592            }            }
1593            endptr = ptr;            endptr = ptr;
1594            strcpy(endptr, jfriedl_prefix); endptr += strlen(jfriedl_prefix);            strcpy(endptr, jfriedl_prefix); endptr += strlen(jfriedl_prefix);
# Line 892  while (ptr < endptr) Line 1605  while (ptr < endptr)
1605    
1606    
1607        for (i = 0; i < jfriedl_XR; i++)        for (i = 0; i < jfriedl_XR; i++)
1608            match = (pcre_exec(pattern_list[0], hints_list[0], ptr, length, 0, 0, offsets, 99) >= 0);            match = (pcre_exec(patterns->compiled, patterns->hint, ptr, length, 0,
1609                  PCRE_NOTEMPTY, offsets, OFFSET_SIZE) >= 0);
1610    
1611        if (gettimeofday(&end_time, &dummy) != 0)        if (gettimeofday(&end_time, &dummy) != 0)
1612                perror("bad gettimeofday");                perror("bad gettimeofday");
# Line 906  while (ptr < endptr) Line 1620  while (ptr < endptr)
1620    }    }
1621  #endif  #endif
1622    
1623      /* We come back here after a match when show_only_matching is set, in order
1624      to find any further matches in the same line. This applies to
1625      --only-matching, --file-offsets, and --line-offsets. */
1626    
1627    /* Run through all the patterns until one matches. Note that we don't include    ONLY_MATCHING_RESTART:
   the final newline in the subject string. */  
1628    
1629    for (i = 0; i < pattern_count; i++)    /* Run through all the patterns until one matches or there is an error other
1630      {    than NOMATCH. This code is in a subroutine so that it can be re-used for
1631      mrc = pcre_exec(pattern_list[i], hints_list[i], ptr, length, 0, 0,    finding subsequent matches when colouring matched lines. */
1632        offsets, 99);  
1633      if (mrc >= 0) { match = TRUE; break; }    match = match_patterns(matchptr, length, startoffset, offsets, &mrc);
     if (mrc != PCRE_ERROR_NOMATCH)  
       {  
       fprintf(stderr, "pcregrep: pcre_exec() error %d while matching ", mrc);  
       if (pattern_count > 1) fprintf(stderr, "pattern number %d to ", i+1);  
       fprintf(stderr, "this line:\n");  
       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;  
       }  
     }  
1634    
1635    /* 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. */
1636    
# Line 953  while (ptr < endptr) Line 1646  while (ptr < endptr)
1646    
1647      if (count_only) count++;      if (count_only) count++;
1648    
1649        /* When handling a binary file and binary-files==binary, the "binary"
1650        variable will be set true (it's false in all other cases). In this
1651        situation we just want to output the file name. No need to scan further. */
1652    
1653        else if (binary)
1654          {
1655          fprintf(stdout, "Binary file %s matches\n", filename);
1656          return 0;
1657          }
1658    
1659      /* 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
1660      in the file. */      in the file. */
1661    
1662      else if (filenames == FN_ONLY)      else if (filenames == FN_MATCH_ONLY)
1663        {        {
1664        fprintf(stdout, "%s\n", printname);        fprintf(stdout, "%s\n", printname);
1665        return 0;        return 0;
# Line 966  while (ptr < endptr) Line 1669  while (ptr < endptr)
1669    
1670      else if (quiet) return 0;      else if (quiet) return 0;
1671    
1672      /* The --only-matching option prints just the substring that matched, and      /* The --only-matching option prints just the substring that matched,
1673      does not pring any context. */      and/or one or more captured portions of it, as long as these strings are
1674        not empty. The --file-offsets and --line-offsets options output offsets for
1675        the matching substring (all three set show_only_matching). None of these
1676        mutually exclusive options prints any context. Afterwards, adjust the start
1677        and then jump back to look for further matches in the same line. If we are
1678        in invert mode, however, nothing is printed and we do not restart - this
1679        could still be useful because the return code is set. */
1680    
1681      else if (only_matching)      else if (show_only_matching)
1682        {        {
1683        if (printname != NULL) fprintf(stdout, "%s:", printname);        if (!invert)
1684        if (number) fprintf(stdout, "%d:", linenumber);          {
1685        fwrite(ptr + offsets[0], 1, offsets[1] - offsets[0], stdout);          if (printname != NULL) fprintf(stdout, "%s:", printname);
1686        fprintf(stdout, "\n");          if (number) fprintf(stdout, "%d:", linenumber);
1687    
1688            /* Handle --line-offsets */
1689    
1690            if (line_offsets)
1691              fprintf(stdout, "%d,%d\n", (int)(matchptr + offsets[0] - ptr),
1692                offsets[1] - offsets[0]);
1693    
1694            /* Handle --file-offsets */
1695    
1696            else if (file_offsets)
1697              fprintf(stdout, "%d,%d\n",
1698                (int)(filepos + matchptr + offsets[0] - ptr),
1699                offsets[1] - offsets[0]);
1700    
1701            /* Handle --only-matching, which may occur many times */
1702    
1703            else
1704              {
1705              BOOL printed = FALSE;
1706              omstr *om;
1707    
1708              for (om = only_matching; om != NULL; om = om->next)
1709                {
1710                int n = om->groupnum;
1711                if (n < mrc)
1712                  {
1713                  int plen = offsets[2*n + 1] - offsets[2*n];
1714                  if (plen > 0)
1715                    {
1716                    if (printed) fprintf(stdout, "%s", om_separator);
1717                    if (do_colour) fprintf(stdout, "%c[%sm", 0x1b, colour_string);
1718                    FWRITE(matchptr + offsets[n*2], 1, plen, stdout);
1719                    if (do_colour) fprintf(stdout, "%c[00m", 0x1b);
1720                    printed = TRUE;
1721                    }
1722                  }
1723                }
1724    
1725              if (printed || printname != NULL || number) fprintf(stdout, "\n");
1726              }
1727    
1728            /* Prepare to repeat to find the next match */
1729    
1730            match = FALSE;
1731            if (line_buffered) fflush(stdout);
1732            rc = 0;                      /* Had some success */
1733            startoffset = offsets[1];    /* Restart after the match */
1734            goto ONLY_MATCHING_RESTART;
1735            }
1736        }        }
1737    
1738      /* 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 1008  while (ptr < endptr) Line 1766  while (ptr < endptr)
1766            if (printname != NULL) fprintf(stdout, "%s-", printname);            if (printname != NULL) fprintf(stdout, "%s-", printname);
1767            if (number) fprintf(stdout, "%d-", lastmatchnumber++);            if (number) fprintf(stdout, "%d-", lastmatchnumber++);
1768            pp = end_of_line(pp, endptr, &ellength);            pp = end_of_line(pp, endptr, &ellength);
1769            fwrite(lastmatchrestart, 1, pp - lastmatchrestart, stdout);            FWRITE(lastmatchrestart, 1, pp - lastmatchrestart, stdout);
1770            lastmatchrestart = pp;            lastmatchrestart = pp;
1771            }            }
1772          if (lastmatchrestart != ptr) hyphenpending = TRUE;          if (lastmatchrestart != ptr) hyphenpending = TRUE;
# Line 1031  while (ptr < endptr) Line 1789  while (ptr < endptr)
1789          int linecount = 0;          int linecount = 0;
1790          char *p = ptr;          char *p = ptr;
1791    
1792          while (p > buffer && (lastmatchnumber == 0 || p > lastmatchrestart) &&          while (p > main_buffer && (lastmatchnumber == 0 || p > lastmatchrestart) &&
1793                 linecount < before_context)                 linecount < before_context)
1794            {            {
1795            linecount++;            linecount++;
1796            p = previous_line(p, buffer);            p = previous_line(p, main_buffer);
1797            }            }
1798    
1799          if (lastmatchnumber > 0 && p > lastmatchrestart && !hyphenprinted)          if (lastmatchnumber > 0 && p > lastmatchrestart && !hyphenprinted)
# Line 1048  while (ptr < endptr) Line 1806  while (ptr < endptr)
1806            if (printname != NULL) fprintf(stdout, "%s-", printname);            if (printname != NULL) fprintf(stdout, "%s-", printname);
1807            if (number) fprintf(stdout, "%d-", linenumber - linecount--);            if (number) fprintf(stdout, "%d-", linenumber - linecount--);
1808            pp = end_of_line(pp, endptr, &ellength);            pp = end_of_line(pp, endptr, &ellength);
1809            fwrite(p, 1, pp - p, stdout);            FWRITE(p, 1, pp - p, stdout);
1810            p = pp;            p = pp;
1811            }            }
1812          }          }
# Line 1064  while (ptr < endptr) Line 1822  while (ptr < endptr)
1822    
1823        /* 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
1824        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
1825        line number appropriately. Because the PCRE_FIRSTLINE option is set, the        line number appropriately, but only when there actually was a match
1826        start of the match will always be before the first newline sequence. */        (invert not set). Because the PCRE_FIRSTLINE option is set, the start of
1827          the match will always be before the first newline sequence. */
1828    
1829        if (multiline)        if (multiline & !invert)
1830          {          {
         int ellength;  
1831          char *endmatch = ptr + offsets[1];          char *endmatch = ptr + offsets[1];
1832          t = ptr;          t = ptr;
1833          while (t < endmatch)          while (t < endmatch)
1834            {            {
1835            t = end_of_line(t, endptr, &ellength);            t = end_of_line(t, endptr, &endlinelength);
1836            if (t <= endmatch) linenumber++; else break;            if (t < endmatch) linenumber++; else break;
1837            }            }
1838          endmatch = end_of_line(endmatch, endptr, &ellength);          linelength = t - ptr - endlinelength;
         linelength = endmatch - ptr - ellength;  
1839          }          }
1840    
1841        /*** 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 1093  while (ptr < endptr) Line 1850  while (ptr < endptr)
1850          {          {
1851          int first = S_arg * 2;          int first = S_arg * 2;
1852          int last  = first + 1;          int last  = first + 1;
1853          fwrite(ptr, 1, offsets[first], stdout);          FWRITE(ptr, 1, offsets[first], stdout);
1854          fprintf(stdout, "X");          fprintf(stdout, "X");
1855          fwrite(ptr + offsets[last], 1, linelength - offsets[last], stdout);          FWRITE(ptr + offsets[last], 1, linelength - offsets[last], stdout);
1856          }          }
1857        else        else
1858  #endif  #endif
1859    
1860        /* We have to split the line(s) up if colouring. */        /* We have to split the line(s) up if colouring, and search for further
1861          matches, but not of course if the line is a non-match. */
1862    
1863        if (do_colour)        if (do_colour && !invert)
1864          {          {
1865          fwrite(ptr, 1, offsets[0], stdout);          int plength;
1866            FWRITE(ptr, 1, offsets[0], stdout);
1867          fprintf(stdout, "%c[%sm", 0x1b, colour_string);          fprintf(stdout, "%c[%sm", 0x1b, colour_string);
1868          fwrite(ptr + offsets[0], 1, offsets[1] - offsets[0], stdout);          FWRITE(ptr + offsets[0], 1, offsets[1] - offsets[0], stdout);
1869          fprintf(stdout, "%c[00m", 0x1b);          fprintf(stdout, "%c[00m", 0x1b);
1870          fwrite(ptr + offsets[1], 1, linelength - offsets[1], stdout);          for (;;)
1871              {
1872              startoffset = offsets[1];
1873              if (startoffset >= (int)linelength + endlinelength ||
1874                  !match_patterns(matchptr, length, startoffset, offsets, &mrc))
1875                break;
1876              FWRITE(matchptr + startoffset, 1, offsets[0] - startoffset, stdout);
1877              fprintf(stdout, "%c[%sm", 0x1b, colour_string);
1878              FWRITE(matchptr + offsets[0], 1, offsets[1] - offsets[0], stdout);
1879              fprintf(stdout, "%c[00m", 0x1b);
1880              }
1881    
1882            /* In multiline mode, we may have already printed the complete line
1883            and its line-ending characters (if they matched the pattern), so there
1884            may be no more to print. */
1885    
1886            plength = (int)((linelength + endlinelength) - startoffset);
1887            if (plength > 0) FWRITE(ptr + startoffset, 1, plength, stdout);
1888          }          }
1889        else fwrite(ptr, 1, linelength + endlinelength, stdout);  
1890          /* Not colouring; no need to search for further matches */
1891    
1892          else FWRITE(ptr, 1, linelength + endlinelength, stdout);
1893        }        }
1894    
1895      /* 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
1896        given, flush the output. */
1897    
1898        if (line_buffered) fflush(stdout);
1899      rc = 0;    /* Had some success */      rc = 0;    /* Had some success */
1900    
1901      /* Remember where the last match happened for after_context. We remember      /* Remember where the last match happened for after_context. We remember
# Line 1124  while (ptr < endptr) Line 1905  while (ptr < endptr)
1905      lastmatchnumber = linenumber + 1;      lastmatchnumber = linenumber + 1;
1906      }      }
1907    
1908    /* Advance to after the newline and increment the line number. */    /* For a match in multiline inverted mode (which of course did not cause
1909      anything to be printed), we have to move on to the end of the match before
1910      proceeding. */
1911    
1912      if (multiline && invert && match)
1913        {
1914        int ellength;
1915        char *endmatch = ptr + offsets[1];
1916        t = ptr;
1917        while (t < endmatch)
1918          {
1919          t = end_of_line(t, endptr, &ellength);
1920          if (t <= endmatch) linenumber++; else break;
1921          }
1922        endmatch = end_of_line(endmatch, endptr, &ellength);
1923        linelength = endmatch - ptr - ellength;
1924        }
1925    
1926      /* Advance to after the newline and increment the line number. The file
1927      offset to the current line is maintained in filepos. */
1928    
1929    ptr += linelength + endlinelength;    ptr += linelength + endlinelength;
1930      filepos += (int)(linelength + endlinelength);
1931    linenumber++;    linenumber++;
1932    
1933      /* If input is line buffered, and the buffer is not yet full, read another
1934      line and add it into the buffer. */
1935    
1936      if (input_line_buffered && bufflength < (size_t)bufsize)
1937        {
1938        int add = read_one_line(ptr, bufsize - (int)(ptr - main_buffer), in);
1939        bufflength += add;
1940        endptr += add;
1941        }
1942    
1943    /* 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
1944    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
1945    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
1946    about to be lost, print them. */    about to be lost, print them. */
1947    
1948    if (bufflength >= sizeof(buffer) && ptr > buffer + 2*MBUFTHIRD)    if (bufflength >= (size_t)bufsize && ptr > main_buffer + 2*bufthird)
1949      {      {
1950      if (after_context > 0 &&      if (after_context > 0 &&
1951          lastmatchnumber > 0 &&          lastmatchnumber > 0 &&
1952          lastmatchrestart < buffer + MBUFTHIRD)          lastmatchrestart < main_buffer + bufthird)
1953        {        {
1954        do_after_lines(lastmatchnumber, lastmatchrestart, endptr, printname);        do_after_lines(lastmatchnumber, lastmatchrestart, endptr, printname);
1955        lastmatchnumber = 0;        lastmatchnumber = 0;
# Line 1146  while (ptr < endptr) Line 1957  while (ptr < endptr)
1957    
1958      /* Now do the shuffle */      /* Now do the shuffle */
1959    
1960      memmove(buffer, buffer + MBUFTHIRD, 2*MBUFTHIRD);      memmove(main_buffer, main_buffer + bufthird, 2*bufthird);
1961      ptr -= MBUFTHIRD;      ptr -= bufthird;
1962      bufflength = 2*MBUFTHIRD + fread(buffer + 2*MBUFTHIRD, 1, MBUFTHIRD, in);  
1963      endptr = buffer + bufflength;  #ifdef SUPPORT_LIBZ
1964        if (frtype == FR_LIBZ)
1965          bufflength = 2*bufthird +
1966            gzread (ingz, main_buffer + 2*bufthird, bufthird);
1967        else
1968    #endif
1969    
1970    #ifdef SUPPORT_LIBBZ2
1971        if (frtype == FR_LIBBZ2)
1972          bufflength = 2*bufthird +
1973            BZ2_bzread(inbz2, main_buffer + 2*bufthird, bufthird);
1974        else
1975    #endif
1976    
1977        bufflength = 2*bufthird +
1978          (input_line_buffered?
1979           read_one_line(main_buffer + 2*bufthird, bufthird, in) :
1980           fread(main_buffer + 2*bufthird, 1, bufthird, in));
1981        endptr = main_buffer + bufflength;
1982    
1983      /* Adjust any last match point */      /* Adjust any last match point */
1984    
1985      if (lastmatchnumber > 0) lastmatchrestart -= MBUFTHIRD;      if (lastmatchnumber > 0) lastmatchrestart -= bufthird;
1986      }      }
1987    }     /* Loop through the whole file */    }     /* Loop through the whole file */
1988    
1989  /* 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
1990  hyphenpending if it prints something. */  hyphenpending if it prints something. */
1991    
1992  if (!only_matching && !count_only)  if (!show_only_matching && !count_only)
1993    {    {
1994    do_after_lines(lastmatchnumber, lastmatchrestart, endptr, printname);    do_after_lines(lastmatchnumber, lastmatchrestart, endptr, printname);
1995    hyphenpending |= endhyphenpending;    hyphenpending |= endhyphenpending;
# Line 1179  if (filenames == FN_NOMATCH_ONLY) Line 2008  if (filenames == FN_NOMATCH_ONLY)
2008    
2009  if (count_only)  if (count_only)
2010    {    {
2011    if (printname != NULL) fprintf(stdout, "%s:", printname);    if (count > 0 || !omit_zero_count)
2012    fprintf(stdout, "%d\n", count);      {
2013        if (printname != NULL && filenames != FN_NONE)
2014          fprintf(stdout, "%s:", printname);
2015        fprintf(stdout, "%d\n", count);
2016        }
2017    }    }
2018    
2019  return rc;  return rc;
# Line 1200  Arguments: Line 2033  Arguments:
2033    dir_recurse       TRUE if recursing is wanted (-r or -drecurse)    dir_recurse       TRUE if recursing is wanted (-r or -drecurse)
2034    only_one_at_top   TRUE if the path is the only one at toplevel    only_one_at_top   TRUE if the path is the only one at toplevel
2035    
2036  Returns:   0 if there was at least one match  Returns:  -1 the file/directory was skipped
2037               0 if there was at least one match
2038             1 if there were no matches             1 if there were no matches
2039             2 there was some kind of error             2 there was some kind of error
2040    
# Line 1211  static int Line 2045  static int
2045  grep_or_recurse(char *pathname, BOOL dir_recurse, BOOL only_one_at_top)  grep_or_recurse(char *pathname, BOOL dir_recurse, BOOL only_one_at_top)
2046  {  {
2047  int rc = 1;  int rc = 1;
2048  int sep;  int frtype;
2049  FILE *in;  void *handle;
2050    char *lastcomp;
2051    FILE *in = NULL;           /* Ensure initialized */
2052    
2053    #ifdef SUPPORT_LIBZ
2054    gzFile ingz = NULL;
2055    #endif
2056    
2057    #ifdef SUPPORT_LIBBZ2
2058    BZFILE *inbz2 = NULL;
2059    #endif
2060    
2061    #if defined SUPPORT_LIBZ || defined SUPPORT_LIBBZ2
2062    int pathlen;
2063    #endif
2064    
2065  /* If the file name is "-" we scan stdin */  /* If the file name is "-" we scan stdin */
2066    
2067  if (strcmp(pathname, "-") == 0)  if (strcmp(pathname, "-") == 0)
2068    {    {
2069    return pcregrep(stdin,    return pcregrep(stdin, FR_PLAIN, stdin_name,
2070      (filenames > FN_DEFAULT || (filenames == FN_DEFAULT && !only_one_at_top))?      (filenames > FN_DEFAULT || (filenames == FN_DEFAULT && !only_one_at_top))?
2071        stdin_name : NULL);        stdin_name : NULL);
2072    }    }
2073    
2074    /* Inclusion and exclusion: --include-dir and --exclude-dir apply only to
2075    directories, whereas --include and --exclude apply to everything else. The test
2076    is against the final component of the path. */
2077    
2078    lastcomp = strrchr(pathname, FILESEP);
2079    lastcomp = (lastcomp == NULL)? pathname : lastcomp + 1;
2080    
2081    /* If the file is a directory, skip if not recursing or if explicitly excluded.
2082    Otherwise, scan the directory and recurse for each path within it. The scanning
2083    code is localized so it can be made system-specific. */
2084    
2085    if (isdirectory(pathname))
2086      {
2087      if (dee_action == dee_SKIP ||
2088          !test_incexc(lastcomp, include_dir_patterns, exclude_dir_patterns))
2089        return -1;
2090    
 /* If the file is a directory, skip if skipping or if we are recursing, scan  
 each file within it, subject to any include or exclude patterns that were set.  
 The scanning code is localized so it can be made system-specific. */  
   
 if ((sep = isdirectory(pathname)) != 0)  
   {  
   if (dee_action == dee_SKIP) return 1;  
2091    if (dee_action == dee_RECURSE)    if (dee_action == dee_RECURSE)
2092      {      {
2093      char buffer[1024];      char buffer[1024];
# Line 1247  if ((sep = isdirectory(pathname)) != 0) Line 2104  if ((sep = isdirectory(pathname)) != 0)
2104    
2105      while ((nextfile = readdirectory(dir)) != NULL)      while ((nextfile = readdirectory(dir)) != NULL)
2106        {        {
2107        int frc, blen;        int frc;
2108        sprintf(buffer, "%.512s%c%.128s", pathname, sep, nextfile);        sprintf(buffer, "%.512s%c%.128s", pathname, FILESEP, nextfile);
       blen = strlen(buffer);  
   
       if (exclude_compiled != NULL &&  
           pcre_exec(exclude_compiled, NULL, buffer, blen, 0, 0, NULL, 0) >= 0)  
         continue;  
   
       if (include_compiled != NULL &&  
           pcre_exec(include_compiled, NULL, buffer, blen, 0, 0, NULL, 0) < 0)  
         continue;  
   
2109        frc = grep_or_recurse(buffer, dir_recurse, FALSE);        frc = grep_or_recurse(buffer, dir_recurse, FALSE);
2110        if (frc > 1) rc = frc;        if (frc > 1) rc = frc;
2111         else if (frc == 0 && rc == 1) rc = 0;         else if (frc == 0 && rc == 1) rc = 0;
# Line 1270  if ((sep = isdirectory(pathname)) != 0) Line 2117  if ((sep = isdirectory(pathname)) != 0)
2117    }    }
2118    
2119  /* If the file is not a directory and not a regular file, skip it if that's  /* If the file is not a directory and not a regular file, skip it if that's
2120  been requested. */  been requested. Otherwise, check for explicit include/exclude. */
2121    
2122  else if (!isregfile(pathname) && DEE_action == DEE_SKIP) return 1;  else if ((!isregfile(pathname) && DEE_action == DEE_SKIP) ||
2123              !test_incexc(lastcomp, include_patterns, exclude_patterns))
2124            return -1;
2125    
2126  /* Control reaches here if we have a regular file, or if we have a directory  /* Control reaches here if we have a regular file, or if we have a directory
2127  and recursion or skipping was not requested, or if we have anything else and  and recursion or skipping was not requested, or if we have anything else and
# Line 1280  skipping was not requested. The scan pro Line 2129  skipping was not requested. The scan pro
2129  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
2130  the file name, or the filename was forced (-H). */  the file name, or the filename was forced (-H). */
2131    
2132  in = fopen(pathname, "r");  #if defined SUPPORT_LIBZ || defined SUPPORT_LIBBZ2
2133  if (in == NULL)  pathlen = (int)(strlen(pathname));
2134    {  #endif
   if (!silent)  
     fprintf(stderr, "pcregrep: Failed to open %s: %s\n", pathname,  
       strerror(errno));  
   return 2;  
   }  
   
 rc = pcregrep(in, (filenames > FN_DEFAULT ||  
   (filenames == FN_DEFAULT && !only_one_at_top))? pathname : NULL);  
2135    
2136  fclose(in);  /* Open using zlib if it is supported and the file name ends with .gz. */
 return rc;  
 }  
2137    
2138    #ifdef SUPPORT_LIBZ
2139    if (pathlen > 3 && strcmp(pathname + pathlen - 3, ".gz") == 0)
2140      {
2141      ingz = gzopen(pathname, "rb");
2142      if (ingz == NULL)
2143        {
2144        if (!silent)
2145          fprintf(stderr, "pcregrep: Failed to open %s: %s\n", pathname,
2146            strerror(errno));
2147        return 2;
2148        }
2149      handle = (void *)ingz;
2150      frtype = FR_LIBZ;
2151      }
2152    else
2153    #endif
2154    
2155    /* Otherwise open with bz2lib if it is supported and the name ends with .bz2. */
2156    
2157    #ifdef SUPPORT_LIBBZ2
2158    if (pathlen > 4 && strcmp(pathname + pathlen - 4, ".bz2") == 0)
2159      {
2160      inbz2 = BZ2_bzopen(pathname, "rb");
2161      handle = (void *)inbz2;
2162      frtype = FR_LIBBZ2;
2163      }
2164    else
2165    #endif
2166    
2167  /*************************************************  /* Otherwise use plain fopen(). The label is so that we can come back here if
2168  *                Usage function                  *  an attempt to read a .bz2 file indicates that it really is a plain file. */
 *************************************************/  
2169    
2170  static int  #ifdef SUPPORT_LIBBZ2
2171  usage(int rc)  PLAIN_FILE:
2172  {  #endif
 option_item *op;  
 fprintf(stderr, "Usage: pcregrep [-");  
 for (op = optionlist; op->one_char != 0; op++)  
2173    {    {
2174    if (op->one_char > 0) fprintf(stderr, "%c", op->one_char);    in = fopen(pathname, "rb");
2175      handle = (void *)in;
2176      frtype = FR_PLAIN;
2177    }    }
 fprintf(stderr, "] [long options] [pattern] [files]\n");  
 fprintf(stderr, "Type `pcregrep --help' for more information.\n");  
 return rc;  
 }  
2178    
2179    /* All the opening methods return errno when they fail. */
2180    
2181    if (handle == NULL)
2182      {
2183      if (!silent)
2184        fprintf(stderr, "pcregrep: Failed to open %s: %s\n", pathname,
2185          strerror(errno));
2186      return 2;
2187      }
2188    
2189    /* Now grep the file */
2190    
2191  /*************************************************  rc = pcregrep(handle, frtype, pathname, (filenames > FN_DEFAULT ||
2192  *                Help function                   *    (filenames == FN_DEFAULT && !only_one_at_top))? pathname : NULL);
 *************************************************/  
2193    
2194  static void  /* Close in an appropriate manner. */
 help(void)  
 {  
 option_item *op;  
2195    
2196  printf("Usage: pcregrep [OPTION]... [PATTERN] [FILE1 FILE2 ...]\n");  #ifdef SUPPORT_LIBZ
2197  printf("Search for PATTERN in each FILE or standard input.\n");  if (frtype == FR_LIBZ)
2198  printf("PATTERN must be present if neither -e nor -f is used.\n");    gzclose(ingz);
2199  printf("\"-\" can be used as a file name to mean STDIN.\n\n");  else
2200  printf("Example: pcregrep -i 'hello.*world' menu.h main.c\n\n");  #endif
2201    
2202  printf("Options:\n");  /* If it is a .bz2 file and the result is 3, it means that the first attempt to
2203    read failed. If the error indicates that the file isn't in fact bzipped, try
2204    again as a normal file. */
2205    
2206  for (op = optionlist; op->one_char != 0; op++)  #ifdef SUPPORT_LIBBZ2
2207    if (frtype == FR_LIBBZ2)
2208    {    {
2209    int n;    if (rc == 3)
2210    char s[4];      {
2211    if (op->one_char > 0) sprintf(s, "-%c,", op->one_char); else strcpy(s, "   ");      int errnum;
2212    printf("  %s --%s%n", s, op->long_name, &n);      const char *err = BZ2_bzerror(inbz2, &errnum);
2213    n = 30 - n;      if (errnum == BZ_DATA_ERROR_MAGIC)
2214    if (n < 1) n = 1;        {
2215    printf("%.*s%s\n", n, "                    ", op->help_text);        BZ2_bzclose(inbz2);
2216          goto PLAIN_FILE;
2217          }
2218        else if (!silent)
2219          fprintf(stderr, "pcregrep: Failed to read %s using bzlib: %s\n",
2220            pathname, err);
2221        rc = 2;    /* The normal "something went wrong" code */
2222        }
2223      BZ2_bzclose(inbz2);
2224    }    }
2225    else
2226    #endif
2227    
2228  printf("\nWhen reading patterns from a file instead of using a command line option,\n");  /* Normal file close */
 printf("trailing white space is removed and blank lines are ignored.\n");  
 printf("There is a maximum of %d patterns.\n", MAX_PATTERN_COUNT);  
2229    
2230  printf("\nWith no FILEs, read standard input. If fewer than two FILEs given, assume -h.\n");  fclose(in);
2231  printf("Exit status is 0 if any matches, 1 if no matches, and 2 if trouble.\n");  
2232  }  /* Pass back the yield from pcregrep(). */
2233    
2234    return rc;
2235    }
2236    
2237    
2238    
# Line 1368  handle_option(int letter, int options) Line 2245  handle_option(int letter, int options)
2245  {  {
2246  switch(letter)  switch(letter)
2247    {    {
2248    case N_HELP: help(); exit(0);    case N_FOFFSETS: file_offsets = TRUE; break;
2249      case N_HELP: help(); pcregrep_exit(0);
2250      case N_LBUFFER: line_buffered = TRUE; break;
2251      case N_LOFFSETS: line_offsets = number = TRUE; break;
2252      case N_NOJIT: study_options &= ~PCRE_STUDY_JIT_COMPILE; break;
2253      case 'a': binary_files = BIN_TEXT; break;
2254    case 'c': count_only = TRUE; break;    case 'c': count_only = TRUE; break;
2255    case 'F': process_options |= PO_FIXED_STRINGS; break;    case 'F': process_options |= PO_FIXED_STRINGS; break;
2256    case 'H': filenames = FN_FORCE; break;    case 'H': filenames = FN_FORCE; break;
2257      case 'I': binary_files = BIN_NOMATCH; break;
2258    case 'h': filenames = FN_NONE; break;    case 'h': filenames = FN_NONE; break;
2259    case 'i': options |= PCRE_CASELESS; break;    case 'i': options |= PCRE_CASELESS; break;
2260    case 'l': filenames = FN_ONLY; break;    case 'l': omit_zero_count = TRUE; filenames = FN_MATCH_ONLY; break;
2261    case 'L': filenames = FN_NOMATCH_ONLY; break;    case 'L': filenames = FN_NOMATCH_ONLY; break;
2262    case 'M': multiline = TRUE; options |= PCRE_MULTILINE|PCRE_FIRSTLINE; break;    case 'M': multiline = TRUE; options |= PCRE_MULTILINE|PCRE_FIRSTLINE; break;
2263    case 'n': number = TRUE; break;    case 'n': number = TRUE; break;
2264    case 'o': only_matching = TRUE; break;  
2265      case 'o':
2266      only_matching_last = add_number(0, only_matching_last);
2267      if (only_matching == NULL) only_matching = only_matching_last;
2268      break;
2269    
2270    case 'q': quiet = TRUE; break;    case 'q': quiet = TRUE; break;
2271    case 'r': dee_action = dee_RECURSE; break;    case 'r': dee_action = dee_RECURSE; break;
2272    case 's': silent = TRUE; break;    case 's': silent = TRUE; break;
# Line 1388  switch(letter) Line 2276  switch(letter)
2276    case 'x': process_options |= PO_LINE_MATCH; break;    case 'x': process_options |= PO_LINE_MATCH; break;
2277    
2278    case 'V':    case 'V':
2279    fprintf(stderr, "pcregrep version %s\n", pcre_version());    fprintf(stdout, "pcregrep version %s\n", pcre_version());
2280    exit(0);    pcregrep_exit(0);
2281    break;    break;
2282    
2283    default:    default:
2284    fprintf(stderr, "pcregrep: Unknown option -%c\n", letter);    fprintf(stderr, "pcregrep: Unknown option -%c\n", letter);
2285    exit(usage(2));    pcregrep_exit(usage(2));
2286    }    }
2287    
2288  return options;  return options;
# Line 1432  return buffer; Line 2320  return buffer;
2320  *          Compile a single pattern              *  *          Compile a single pattern              *
2321  *************************************************/  *************************************************/
2322    
2323  /* When the -F option has been used, this is called for each substring.  /* Do nothing if the pattern has already been compiled. This is the case for
2324  Otherwise it's called for each supplied pattern.  include/exclude patterns read from a file.
2325    
2326    When the -F option has been used, each "pattern" may be a list of strings,
2327    separated by line breaks. They will be matched literally. We split such a
2328    string and compile the first substring, inserting an additional block into the
2329    pattern chain.
2330    
2331  Arguments:  Arguments:
2332    pattern        the pattern string    p              points to the pattern block
2333    options        the PCRE options    options        the PCRE options
2334    filename       the file name, or NULL for a command-line pattern    popts          the processing options
2335      fromfile       TRUE if the pattern was read from a file
2336      fromtext       file name or identifying text (e.g. "include")
2337    count          0 if this is the only command line pattern, or    count          0 if this is the only command line pattern, or
2338                   number of the command line pattern, or                   number of the command line pattern, or
2339                   linenumber for a pattern from a file                   linenumber for a pattern from a file
# Line 1447  Returns:         TRUE on success, FALSE Line 2342  Returns:         TRUE on success, FALSE
2342  */  */
2343    
2344  static BOOL  static BOOL
2345  compile_single_pattern(char *pattern, int options, char *filename, int count)  compile_pattern(patstr *p, int options, int popts, int fromfile,
2346      const char *fromtext, int count)
2347  {  {
2348  char buffer[MBUFTHIRD + 16];  char buffer[PATBUFSIZE];
2349  const char *error;  const char *error;
2350    char *ps = p->string;
2351    int patlen = strlen(ps);
2352  int errptr;  int errptr;
2353    
2354  if (pattern_count >= MAX_PATTERN_COUNT)  if (p->compiled != NULL) return TRUE;
   {  
   fprintf(stderr, "pcregrep: Too many %spatterns (max %d)\n",  
     (filename == NULL)? "command-line " : "", MAX_PATTERN_COUNT);  
   return FALSE;  
   }  
2355    
2356  sprintf(buffer, "%s%.*s%s", prefix[process_options], MBUFTHIRD, pattern,  if ((popts & PO_FIXED_STRINGS) != 0)
   suffix[process_options]);  
 pattern_list[pattern_count] =  
   pcre_compile(buffer, options, &error, &errptr, pcretables);  
 if (pattern_list[pattern_count] != NULL)  
2357    {    {
2358    pattern_count++;    int ellength;
2359    return TRUE;    char *eop = ps + patlen;
2360      char *pe = end_of_line(ps, eop, &ellength);
2361    
2362      if (ellength != 0)
2363        {
2364        if (add_pattern(pe, p) == NULL) return FALSE;
2365        patlen = (int)(pe - ps - ellength);
2366        }
2367    }    }
2368    
2369    sprintf(buffer, "%s%.*s%s", prefix[popts], patlen, ps, suffix[popts]);
2370    p->compiled = pcre_compile(buffer, options, &error, &errptr, pcretables);
2371    if (p->compiled != NULL) return TRUE;
2372    
2373  /* Handle compile errors */  /* Handle compile errors */
2374    
2375  errptr -= (int)strlen(prefix[process_options]);  errptr -= (int)strlen(prefix[popts]);
2376  if (errptr > (int)strlen(pattern)) errptr = (int)strlen(pattern);  if (errptr > patlen) errptr = patlen;
2377    
2378  if (filename == NULL)  if (fromfile)
2379    {    {
2380    if (count == 0)    fprintf(stderr, "pcregrep: Error in regex in line %d of %s "
2381      fprintf(stderr, "pcregrep: Error in command-line regex "      "at offset %d: %s\n", count, fromtext, errptr, error);
       "at offset %d: %s\n", errptr, error);  
   else  
     fprintf(stderr, "pcregrep: Error in %s command-line regex "  
       "at offset %d: %s\n", ordin(count), errptr, error);  
2382    }    }
2383  else  else
2384    {    {
2385    fprintf(stderr, "pcregrep: Error in regex in line %d of %s "    if (count == 0)
2386      "at offset %d: %s\n", count, filename, errptr, error);      fprintf(stderr, "pcregrep: Error in %s regex at offset %d: %s\n",
2387          fromtext, errptr, error);
2388      else
2389        fprintf(stderr, "pcregrep: Error in %s %s regex at offset %d: %s\n",
2390          ordin(count), fromtext, errptr, error);
2391    }    }
2392    
2393  return FALSE;  return FALSE;
# Line 1496  return FALSE; Line 2396  return FALSE;
2396    
2397    
2398  /*************************************************  /*************************************************
2399  *           Compile one supplied pattern         *  *     Read and compile a file of patterns        *
2400  *************************************************/  *************************************************/
2401    
2402  /* When the -F option has been used, each string may be a list of strings,  /* This is used for --filelist, --include-from, and --exclude-from.
 separated by line breaks. They will be matched literally.  
2403    
2404  Arguments:  Arguments:
2405    pattern        the pattern string    name         the name of the file; "-" is stdin
2406    options        the PCRE options    patptr       pointer to the pattern chain anchor
2407    filename       the file name, or NULL for a command-line pattern    patlastptr   pointer to the last pattern pointer
2408    count          0 if this is the only command line pattern, or    popts        the process options to pass to pattern_compile()
                  number of the command line pattern, or  
                  linenumber for a pattern from a file  
2409    
2410  Returns:         TRUE on success, FALSE after an error  Returns:       TRUE if all went well
2411  */  */
2412    
2413  static BOOL  static BOOL
2414  compile_pattern(char *pattern, int options, char *filename, int count)  read_pattern_file(char *name, patstr **patptr, patstr **patlastptr, int popts)
2415  {  {
2416  if ((process_options & PO_FIXED_STRINGS) != 0)  int linenumber = 0;
2417    FILE *f;
2418    char *filename;
2419    char buffer[PATBUFSIZE];
2420    
2421    if (strcmp(name, "-") == 0)
2422    {    {
2423    char *eop = pattern + strlen(pattern);    f = stdin;
2424    char buffer[MBUFTHIRD];    filename = stdin_name;
2425      }
2426    else
2427      {
2428      f = fopen(name, "r");
2429      if (f == NULL)
2430        {
2431        fprintf(stderr, "pcregrep: Failed to open %s: %s\n", name, strerror(errno));
2432        return FALSE;
2433        }
2434      filename = name;
2435      }
2436    
2437    while (fgets(buffer, PATBUFSIZE, f) != NULL)
2438      {
2439      char *s = buffer + (int)strlen(buffer);
2440      while (s > buffer && isspace((unsigned char)(s[-1]))) s--;
2441      *s = 0;
2442      linenumber++;
2443      if (buffer[0] == 0) continue;   /* Skip blank lines */
2444    
2445      /* Note: this call to add_pattern() puts a pointer to the local variable
2446      "buffer" into the pattern chain. However, that pointer is used only when
2447      compiling the pattern, which happens immediately below, so we flatten it
2448      afterwards, as a precaution against any later code trying to use it. */
2449    
2450      *patlastptr = add_pattern(buffer, *patlastptr);
2451      if (*patlastptr == NULL) return FALSE;
2452      if (*patptr == NULL) *patptr = *patlastptr;
2453    
2454      /* This loop is needed because compiling a "pattern" when -F is set may add
2455      on additional literal patterns if the original contains a newline. In the
2456      common case, it never will, because fgets() stops at a newline. However,
2457      the -N option can be used to give pcregrep a different newline setting. */
2458    
2459    for(;;)    for(;;)
2460      {      {
2461      int ellength;      if (!compile_pattern(*patlastptr, pcre_options, popts, TRUE, filename,
2462      char *p = end_of_line(pattern, eop, &ellength);          linenumber))
     if (ellength == 0)  
       return compile_single_pattern(pattern, options, filename, count);  
     sprintf(buffer, "%.*s", (int)(p - pattern - ellength), pattern);  
     pattern = p;  
     if (!compile_single_pattern(buffer, options, filename, count))  
2463        return FALSE;        return FALSE;
2464        (*patlastptr)->string = NULL;            /* Insurance */
2465        if ((*patlastptr)->next == NULL) break;
2466        *patlastptr = (*patlastptr)->next;
2467      }      }
2468    }    }
2469  else return compile_single_pattern(pattern, options, filename, count);  
2470    if (f != stdin) fclose(f);
2471    return TRUE;
2472  }  }
2473    
2474    
# Line 1548  main(int argc, char **argv) Line 2484  main(int argc, char **argv)
2484  {  {
2485  int i, j;  int i, j;
2486  int rc = 1;  int rc = 1;
 int pcre_options = 0;  
 int cmd_pattern_count = 0;  
 int hint_count = 0;  
 int errptr;  
2487  BOOL only_one_at_top;  BOOL only_one_at_top;
2488  char *patterns[MAX_PATTERN_COUNT];  patstr *cp;
2489    fnstr *fn;
2490  const char *locale_from = "--locale";  const char *locale_from = "--locale";
2491  const char *error;  const char *error;
2492    
2493    #ifdef SUPPORT_PCREGREP_JIT
2494    pcre_jit_stack *jit_stack = NULL;
2495    #endif
2496    
2497  /* Set the default line ending value from the default in the PCRE library;  /* Set the default line ending value from the default in the PCRE library;
2498  "lf", "cr", "crlf", and "any" are supported. Anything else is treated as "lf".  "lf", "cr", "crlf", and "any" are supported. Anything else is treated as "lf".
2499  */  Note that the return values from pcre_config(), though derived from the ASCII
2500    codes, are the same in EBCDIC environments, so we must use the actual values
2501    rather than escapes such as as '\r'. */
2502    
2503  (void)pcre_config(PCRE_CONFIG_NEWLINE, &i);  (void)pcre_config(PCRE_CONFIG_NEWLINE, &i);
2504  switch(i)  switch(i)
2505    {    {
2506    default:                 newline = (char *)"lf"; break;    default:               newline = (char *)"lf"; break;
2507    case '\r':               newline = (char *)"cr"; break;    case 13:               newline = (char *)"cr"; break;
2508    case ('\r' << 8) | '\n': newline = (char *)"crlf"; break;    case (13 << 8) | 10:   newline = (char *)"crlf"; break;
2509    case -1:                 newline = (char *)"any"; break;    case -1:               newline = (char *)"any"; break;
2510    case -2:                 newline = (char *)"anycrlf"; break;    case -2:               newline = (char *)"anycrlf"; break;
2511    }    }
2512    
2513  /* Process the options */  /* Process the options */
# Line 1587  for (i = 1; i < argc; i++) Line 2526  for (i = 1; i < argc; i++)
2526    
2527    if (argv[i][1] == 0)    if (argv[i][1] == 0)
2528      {      {
2529      if (pattern_filename != NULL || pattern_count > 0) break;      if (pattern_files != NULL || patterns != NULL) break;
2530        else exit(usage(2));        else pcregrep_exit(usage(2));
2531      }      }
2532    
2533    /* Handle a long name option, or -- to terminate the options */    /* Handle a long name option, or -- to terminate the options */
# Line 1610  for (i = 1; i < argc; i++) Line 2549  for (i = 1; i < argc; i++)
2549      Some options have variations in the long name spelling: specifically, we      Some options have variations in the long name spelling: specifically, we
2550      allow "regexp" because GNU grep allows it, though I personally go along      allow "regexp" because GNU grep allows it, though I personally go along
2551      with Jeffrey Friedl and Larry Wall in preferring "regex" without the "p".      with Jeffrey Friedl and Larry Wall in preferring "regex" without the "p".
2552      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
2553      these categories, fortunately. */      both these categories. */
2554    
2555      for (op = optionlist; op->one_char != 0; op++)      for (op = optionlist; op->one_char != 0; op++)
2556        {        {
2557        char *opbra = strchr(op->long_name, '(');        char *opbra = strchr(op->long_name, '(');
2558        char *equals = strchr(op->long_name, '=');        char *equals = strchr(op->long_name, '=');
2559        if (opbra == NULL)     /* Not a (p) case */  
2560          /* Handle options with only one spelling of the name */
2561    
2562          if (opbra == NULL)     /* Does not contain '(' */
2563          {          {
2564          if (equals == NULL)  /* Not thing=data case */          if (equals == NULL)  /* Not thing=data case */
2565            {            {
# Line 1625  for (i = 1; i < argc; i++) Line 2567  for (i = 1; i < argc; i++)
2567            }            }
2568          else                 /* Special case xxx=data */          else                 /* Special case xxx=data */
2569            {            {
2570            int oplen = equals - op->long_name;            int oplen = (int)(equals - op->long_name);
2571            int arglen = (argequals == NULL)? (int)strlen(arg) : argequals - arg;            int arglen = (argequals == NULL)?
2572                (int)strlen(arg) : (int)(argequals - arg);
2573            if (oplen == arglen && strncmp(arg, op->long_name, oplen) == 0)            if (oplen == arglen && strncmp(arg, op->long_name, oplen) == 0)
2574              {              {
2575              option_data = arg + arglen;              option_data = arg + arglen;
# Line 1639  for (i = 1; i < argc; i++) Line 2582  for (i = 1; i < argc; i++)
2582              }              }
2583            }            }
2584          }          }
2585        else                   /* Special case xxxx(p) */  
2586          /* Handle options with an alternate spelling of the name */
2587    
2588          else
2589          {          {
2590          char buff1[24];          char buff1[24];
2591          char buff2[24];          char buff2[24];
2592          int baselen = opbra - op->long_name;  
2593            int baselen = (int)(opbra - op->long_name);
2594            int fulllen = (int)(strchr(op->long_name, ')') - op->long_name + 1);
2595            int arglen = (argequals == NULL || equals == NULL)?
2596              (int)strlen(arg) : (int)(argequals - arg);
2597    
2598          sprintf(buff1, "%.*s", baselen, op->long_name);          sprintf(buff1, "%.*s", baselen, op->long_name);
2599          sprintf(buff2, "%s%.*s", buff1,          sprintf(buff2, "%s%.*s", buff1, fulllen - baselen - 2, opbra + 1);
2600            (int)strlen(op->long_name) - baselen - 2, opbra + 1);  
2601          if (strcmp(arg, buff1) == 0 || strcmp(arg, buff2) == 0)          if (strncmp(arg, buff1, arglen) == 0 ||
2602               strncmp(arg, buff2, arglen) == 0)
2603              {
2604              if (equals != NULL && argequals != NULL)
2605                {
2606                option_data = argequals;
2607                if (*option_data == '=')
2608                  {
2609                  option_data++;
2610                  longopwasequals = TRUE;
2611                  }
2612                }
2613            break;            break;
2614              }
2615          }          }
2616        }        }
2617    
2618      if (op->one_char == 0)      if (op->one_char == 0)
2619        {        {
2620        fprintf(stderr, "pcregrep: Unknown option %s\n", argv[i]);        fprintf(stderr, "pcregrep: Unknown option %s\n", argv[i]);
2621        exit(usage(2));        pcregrep_exit(usage(2));
2622        }        }
2623      }      }
2624    
   
2625    /* Jeffrey Friedl's debugging harness uses these additional options which    /* Jeffrey Friedl's debugging harness uses these additional options which
2626    are not in the right form for putting in the option table because they use    are not in the right form for putting in the option table because they use
2627    only one hyphen, yet are more than one character long. By putting them    only one hyphen, yet are more than one character long. By putting them
# Line 1690  for (i = 1; i < argc; i++) Line 2652  for (i = 1; i < argc; i++)
2652      {      {
2653      char *s = argv[i] + 1;      char *s = argv[i] + 1;
2654      longop = FALSE;      longop = FALSE;
2655    
2656      while (*s != 0)      while (*s != 0)
2657        {        {
2658        for (op = optionlist; op->one_char != 0; op++)        for (op = optionlist; op->one_char != 0; op++)
2659          { if (*s == op->one_char) break; }          {
2660            if (*s == op->one_char) break;
2661            }
2662        if (op->one_char == 0)        if (op->one_char == 0)
2663          {          {
2664          fprintf(stderr, "pcregrep: Unknown option letter '%c' in \"%s\"\n",          fprintf(stderr, "pcregrep: Unknown option letter '%c' in \"%s\"\n",
2665            *s, argv[i]);            *s, argv[i]);
2666          exit(usage(2));          pcregrep_exit(usage(2));
2667            }
2668    
2669          option_data = s+1;
2670    
2671          /* Break out if this is the last character in the string; it's handled
2672          below like a single multi-char option. */
2673    
2674          if (*option_data == 0) break;
2675    
2676          /* Check for a single-character option that has data: OP_OP_NUMBER(S)
2677          are used for ones that either have a numerical number or defaults, i.e.
2678          the data is optional. If a digit follows, there is data; if not, carry on
2679          with other single-character options in the same string. */
2680    
2681          if (op->type == OP_OP_NUMBER || op->type == OP_OP_NUMBERS)
2682            {
2683            if (isdigit((unsigned char)s[1])) break;
2684          }          }
2685        if (op->type != OP_NODATA || s[1] == 0)        else   /* Check for an option with data */
2686          {          {
2687          option_data = s+1;          if (op->type != OP_NODATA) break;
         break;  
2688          }          }
2689    
2690          /* Handle a single-character option with no data, then loop for the
2691          next character in the string. */
2692    
2693        pcre_options = handle_option(*s++, pcre_options);        pcre_options = handle_option(*s++, pcre_options);
2694        }        }
2695      }      }
2696    
2697    /* At this point we should have op pointing to a matched option. If the type    /* At this point we should have op pointing to a matched option. If the type
2698    is NO_DATA, it means that there is no data, and the option might set    is NO_DATA, it means that there is no data, and the option might set
2699    something in the PCRE options. */    something in the PCRE options. */
# Line 1719  for (i = 1; i < argc; i++) Line 2704  for (i = 1; i < argc; i++)
2704      continue;      continue;
2705      }      }
2706    
2707    /* 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(S), it's an option that
2708    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
2709    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",
2710    Jeffrey Friedl's special -S debugging option. */    "only-matching", and Jeffrey Friedl's special -S debugging option. */
2711    
2712    if (*option_data == 0 &&    if (*option_data == 0 &&
2713        (op->type == OP_OP_STRING || op->type == OP_OP_NUMBER))        (op->type == OP_OP_STRING || op->type == OP_OP_NUMBER ||
2714           op->type == OP_OP_NUMBERS))
2715      {      {
2716      switch (op->one_char)      switch (op->one_char)
2717        {        {
2718        case N_COLOUR:        case N_COLOUR:
2719        colour_option = (char *)"auto";        colour_option = (char *)"auto";
2720        break;        break;
2721    
2722          case 'o':
2723          only_matching_last = add_number(0, only_matching_last);
2724          if (only_matching == NULL) only_matching = only_matching_last;
2725          break;
2726    
2727  #ifdef JFRIEDL_DEBUG  #ifdef JFRIEDL_DEBUG
2728        case 'S':        case 'S':
2729        S_arg = 0;        S_arg = 0;
# Line 1748  for (i = 1; i < argc; i++) Line 2740  for (i = 1; i < argc; i++)
2740      if (i >= argc - 1 || longopwasequals)      if (i >= argc - 1 || longopwasequals)
2741        {        {
2742        fprintf(stderr, "pcregrep: Data missing after %s\n", argv[i]);        fprintf(stderr, "pcregrep: Data missing after %s\n", argv[i]);
2743        exit(usage(2));        pcregrep_exit(usage(2));
2744        }        }
2745      option_data = argv[++i];      option_data = argv[++i];
2746      }      }
2747    
2748    /* If the option type is OP_PATLIST, it's the -e option, which can be called    /* If the option type is OP_OP_NUMBERS, the value is a number that is to be
2749    multiple times to create a list of patterns. */    added to a chain of numbers. */
2750    
2751      if (op->type == OP_OP_NUMBERS)
2752        {
2753        unsigned long int n = decode_number(option_data, op, longop);
2754        omdatastr *omd = (omdatastr *)op->dataptr;
2755        *(omd->lastptr) = add_number((int)n, *(omd->lastptr));
2756        if (*(omd->anchor) == NULL) *(omd->anchor) = *(omd->lastptr);
2757        }
2758    
2759      /* If the option type is OP_PATLIST, it's the -e option, or one of the
2760      include/exclude options, which can be called multiple times to create lists
2761      of patterns. */
2762    
2763      else if (op->type == OP_PATLIST)
2764        {
2765        patdatastr *pd = (patdatastr *)op->dataptr;
2766        *(pd->lastptr) = add_pattern(option_data, *(pd->lastptr));
2767        if (*(pd->lastptr) == NULL) goto EXIT2;
2768        if (*(pd->anchor) == NULL) *(pd->anchor) = *(pd->lastptr);
2769        }
2770    
2771      /* If the option type is OP_FILELIST, it's one of the options that names a
2772      file. */
2773    
2774    if (op->type == OP_PATLIST)    else if (op->type == OP_FILELIST)
2775      {      {
2776      if (cmd_pattern_count >= MAX_PATTERN_COUNT)      fndatastr *fd = (fndatastr *)op->dataptr;
2777        fn = (fnstr *)malloc(sizeof(fnstr));
2778        if (fn == NULL)
2779        {        {
2780        fprintf(stderr, "pcregrep: Too many command-line patterns (max %d)\n",        fprintf(stderr, "pcregrep: malloc failed\n");
2781          MAX_PATTERN_COUNT);        goto EXIT2;
2782        return 2;        }
2783        fn->next = NULL;
2784        fn->name = option_data;
2785        if (*(fd->anchor) == NULL)
2786          *(fd->anchor) = fn;
2787        else
2788          (*(fd->lastptr))->next = fn;
2789        *(fd->lastptr) = fn;
2790        }
2791    
2792      /* Handle OP_BINARY_FILES */
2793    
2794      else if (op->type == OP_BINFILES)
2795        {
2796        if (strcmp(option_data, "binary") == 0)
2797          binary_files = BIN_BINARY;
2798        else if (strcmp(option_data, "without-match") == 0)
2799          binary_files = BIN_NOMATCH;
2800        else if (strcmp(option_data, "text") == 0)
2801          binary_files = BIN_TEXT;
2802        else
2803          {
2804          fprintf(stderr, "pcregrep: unknown value \"%s\" for binary-files\n",
2805            option_data);
2806          pcregrep_exit(usage(2));
2807        }        }
     patterns[cmd_pattern_count++] = option_data;  
2808      }      }
2809    
2810    /* Otherwise, deal with single string or numeric data values. */    /* Otherwise, deal with a single string or numeric data value. */
2811    
2812    else if (op->type != OP_NUMBER && op->type != OP_OP_NUMBER)    else if (op->type != OP_NUMBER && op->type != OP_LONGNUMBER &&
2813               op->type != OP_OP_NUMBER)
2814      {      {
2815      *((char **)op->dataptr) = option_data;      *((char **)op->dataptr) = option_data;
2816      }      }
2817    else    else
2818      {      {
2819      char *endptr;      unsigned long int n = decode_number(option_data, op, longop);
2820      int n = strtoul(option_data, &endptr, 10);      if (op->type == OP_LONGNUMBER) *((unsigned long int *)op->dataptr) = n;
2821      if (*endptr != 0)        else *((int *)op->dataptr) = n;
       {  
       if (longop)  
         {  
         char *equals = strchr(op->long_name, '=');  
         int nlen = (equals == NULL)? (int)strlen(op->long_name) :  
           equals - op->long_name;  
         fprintf(stderr, "pcregrep: Malformed number \"%s\" after --%.*s\n",  
           option_data, nlen, op->long_name);  
         }  
       else  
         fprintf(stderr, "pcregrep: Malformed number \"%s\" after -%c\n",  
           option_data, op->one_char);  
       exit(usage(2));  
       }  
     *((int *)op->dataptr) = n;  
2822      }      }
2823    }    }
2824    
# Line 1805  if (both_context > 0) Line 2831  if (both_context > 0)
2831    if (before_context == 0) before_context = both_context;    if (before_context == 0) before_context = both_context;
2832    }    }
2833    
2834    /* Only one of --only-matching, --file-offsets, or --line-offsets is permitted.
2835    However, all three set show_only_matching because they display, each in their
2836    own way, only the data that has matched. */
2837    
2838    if ((only_matching != NULL && (file_offsets || line_offsets)) ||
2839        (file_offsets && line_offsets))
2840      {
2841      fprintf(stderr, "pcregrep: Cannot mix --only-matching, --file-offsets "
2842        "and/or --line-offsets\n");
2843      pcregrep_exit(usage(2));
2844      }
2845    
2846    if (only_matching != NULL || file_offsets || line_offsets)
2847      show_only_matching = TRUE;
2848    
2849  /* 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
2850  LC_ALL environment variable is set, and if so, use it. */  LC_ALL environment variable is set, and if so, use it. */
2851    
# Line 1927  if (jfriedl_XT != 0 || jfriedl_XR != 0) Line 2968  if (jfriedl_XT != 0 || jfriedl_XR != 0)
2968    }    }
2969  #endif  #endif
2970    
2971  /* Get memory to store the pattern and hints lists. */  /* Get memory for the main buffer. */
2972    
2973  pattern_list = (pcre **)malloc(MAX_PATTERN_COUNT * sizeof(pcre *));  bufsize = 3*bufthird;
2974  hints_list = (pcre_extra **)malloc(MAX_PATTERN_COUNT * sizeof(pcre_extra *));  main_buffer = (char *)malloc(bufsize);
2975    
2976  if (pattern_list == NULL || hints_list == NULL)  if (main_buffer == NULL)
2977    {    {
2978    fprintf(stderr, "pcregrep: malloc failed\n");    fprintf(stderr, "pcregrep: malloc failed\n");
2979    goto EXIT2;    goto EXIT2;
2980    }    }
2981    
2982  /* If no patterns were provided by -e, and there is no file provided by -f,  /* If no patterns were provided by -e, and there are no files provided by -f,
2983  the first argument is the one and only pattern, and it must exist. */  the first argument is the one and only pattern, and it must exist. */
2984    
2985  if (cmd_pattern_count == 0 && pattern_filename == NULL)  if (patterns == NULL && pattern_files == NULL)
2986    {    {
2987    if (i >= argc) return usage(2);    if (i >= argc) return usage(2);
2988    patterns[cmd_pattern_count++] = argv[i++];    patterns = patterns_last = add_pattern(argv[i++], NULL);
2989      if (patterns == NULL) goto EXIT2;
2990    }    }
2991    
2992  /* Compile the patterns that were provided on the command line, either by  /* Compile the patterns that were provided on the command line, either by
2993  multiple uses of -e or as a single unkeyed pattern. */  multiple uses of -e or as a single unkeyed pattern. We cannot do this until
2994    after all the command-line options are read so that we know which PCRE options
2995    to use. When -F is used, compile_pattern() may add another block into the
2996    chain, so we must not access the next pointer till after the compile. */
2997    
2998  for (j = 0; j < cmd_pattern_count; j++)  for (j = 1, cp = patterns; cp != NULL; j++, cp = cp->next)
2999    {    {
3000    if (!compile_pattern(patterns[j], pcre_options, NULL,    if (!compile_pattern(cp, pcre_options, process_options, FALSE, "command-line",
3001         (j == 0 && cmd_pattern_count == 1)? 0 : j + 1))         (j == 1 && patterns->next == NULL)? 0 : j))
3002      goto EXIT2;      goto EXIT2;
3003    }    }
3004    
3005  /* Compile the regular expressions that are provided in a file. */  /* Read and compile the regular expressions that are provided in files. */
3006    
3007  if (pattern_filename != NULL)  for (fn = pattern_files; fn != NULL; fn = fn->next)
3008    {    {
3009    int linenumber = 0;    if (!read_pattern_file(fn->name, &patterns, &patterns_last, process_options))
3010    FILE *f;      goto EXIT2;
3011    char *filename;    }
   char buffer[MBUFTHIRD];  
3012    
3013    if (strcmp(pattern_filename, "-") == 0)  /* Study the regular expressions, as we will be running them many times. If an
3014    extra block is needed for a limit, set PCRE_STUDY_EXTRA_NEEDED so that one is
3015    returned, even if studying produces no data. */
3016    
3017    if (match_limit > 0 || match_limit_recursion > 0)
3018      study_options |= PCRE_STUDY_EXTRA_NEEDED;
3019    
3020    /* Unless JIT has been explicitly disabled, arrange a stack for it to use. */
3021    
3022    #ifdef SUPPORT_PCREGREP_JIT
3023    if ((study_options & PCRE_STUDY_JIT_COMPILE) != 0)
3024      jit_stack = pcre_jit_stack_alloc(32*1024, 1024*1024);
3025    #endif
3026    
3027    for (j = 1, cp = patterns; cp != NULL; j++, cp = cp->next)
3028      {
3029      cp->hint = pcre_study(cp->compiled, study_options, &error);
3030      if (error != NULL)
3031      {      {
3032      f = stdin;      char s[16];
3033      filename = stdin_name;      if (patterns->next == NULL) s[0] = 0; else sprintf(s, " number %d", j);
3034        fprintf(stderr, "pcregrep: Error while studying regex%s: %s\n", s, error);
3035        goto EXIT2;
3036      }      }
3037    else  #ifdef SUPPORT_PCREGREP_JIT
3038      if (jit_stack != NULL && cp->hint != NULL)
3039        pcre_assign_jit_stack(cp->hint, NULL, jit_stack);
3040    #endif
3041      }
3042    
3043    /* If --match-limit or --recursion-limit was set, put the value(s) into the
3044    pcre_extra block for each pattern. There will always be an extra block because
3045    of the use of PCRE_STUDY_EXTRA_NEEDED above. */
3046    
3047    for (cp = patterns; cp != NULL; cp = cp->next)
3048      {
3049      if (match_limit > 0)
3050      {      {
3051      f = fopen(pattern_filename, "r");      cp->hint->flags |= PCRE_EXTRA_MATCH_LIMIT;
3052      if (f == NULL)      cp->hint->match_limit = match_limit;
       {  
       fprintf(stderr, "pcregrep: Failed to open %s: %s\n", pattern_filename,  
         strerror(errno));  
       goto EXIT2;  
       }  
     filename = pattern_filename;  
3053      }      }
3054    
3055    while (fgets(buffer, MBUFTHIRD, f) != NULL)    if (match_limit_recursion > 0)
3056      {      {
3057      char *s = buffer + (int)strlen(buffer);      cp->hint->flags |= PCRE_EXTRA_MATCH_LIMIT_RECURSION;
3058      while (s > buffer && isspace((unsigned char)(s[-1]))) s--;      cp->hint->match_limit_recursion = match_limit_recursion;
     *s = 0;  
     linenumber++;  
     if (buffer[0] == 0) continue;   /* Skip blank lines */  
     if (!compile_pattern(buffer, pcre_options, filename, linenumber))  
       goto EXIT2;  
3059      }      }
   
   if (f != stdin) fclose(f);  
3060    }    }
3061    
3062  /* Study the regular expressions, as we will be running them many times */  /* If there are include or exclude patterns read from the command line, compile
3063    them. -F, -w, and -x do not apply, so the third argument of compile_pattern is
3064    0. */
3065    
3066  for (j = 0; j < pattern_count; j++)  for (j = 0; j < 4; j++)
3067    {    {
3068    hints_list[j] = pcre_study(pattern_list[j], 0, &error);    int k;
3069    if (error != NULL)    for (k = 1, cp = *(incexlist[j]); cp != NULL; k++, cp = cp->next)
3070      {      {
3071      char s[16];      if (!compile_pattern(cp, pcre_options, 0, FALSE, incexname[j],
3072      if (pattern_count == 1) s[0] = 0; else sprintf(s, " number %d", j);           (k == 1 && cp->next == NULL)? 0 : k))
3073      fprintf(stderr, "pcregrep: Error while studying regex%s: %s\n", s, error);        goto EXIT2;
     goto EXIT2;  
3074      }      }
   hint_count++;  
3075    }    }
3076    
3077  /* If there are include or exclude patterns, compile them. */  /* Read and compile include/exclude patterns from files. */
3078    
3079  if (exclude_pattern != NULL)  for (fn = include_from; fn != NULL; fn = fn->next)
3080    {    {
3081    exclude_compiled = pcre_compile(exclude_pattern, 0, &error, &errptr,    if (!read_pattern_file(fn->name, &include_patterns, &include_patterns_last, 0))
     pcretables);  
   if (exclude_compiled == NULL)  
     {  
     fprintf(stderr, "pcregrep: Error in 'exclude' regex at offset %d: %s\n",  
       errptr, error);  
3082      goto EXIT2;      goto EXIT2;
     }  
3083    }    }
3084    
3085  if (include_pattern != NULL)  for (fn = exclude_from; fn != NULL; fn = fn->next)
3086    {    {
3087    include_compiled = pcre_compile(include_pattern, 0, &error, &errptr,    if (!read_pattern_file(fn->name, &exclude_patterns, &exclude_patterns_last, 0))
     pcretables);  
   if (include_compiled == NULL)  
     {  
     fprintf(stderr, "pcregrep: Error in 'include' regex at offset %d: %s\n",  
       errptr, error);  
3088      goto EXIT2;      goto EXIT2;
     }  
3089    }    }
3090    
3091  /* If there are no further arguments, do the business on stdin and exit. */  /* If there are no files that contain lists of files to search, and there are
3092    no file arguments, search stdin, and then exit. */
3093    
3094  if (i >= argc)  if (file_lists == NULL && i >= argc)
3095    {    {
3096    rc = pcregrep(stdin, (filenames > FN_DEFAULT)? stdin_name : NULL);    rc = pcregrep(stdin, FR_PLAIN, stdin_name,
3097        (filenames > FN_DEFAULT)? stdin_name : NULL);
3098    goto EXIT;    goto EXIT;
3099    }    }
3100    
3101  /* Otherwise, work through the remaining arguments as files or directories.  /* If any files that contains a list of files to search have been specified,
3102  Pass in the fact that there is only one argument at top level - this suppresses  read them line by line and search the given files. */
3103  the file name if the argument is not a directory and filenames are not  
3104  otherwise forced. */  for (fn = file_lists; fn != NULL; fn = fn->next)
3105      {
3106      char buffer[PATBUFSIZE];
3107      FILE *fl;
3108      if (strcmp(fn->name, "-") == 0) fl = stdin; else
3109        {
3110        fl = fopen(fn->name, "rb");
3111        if (fl == NULL)
3112          {
3113          fprintf(stderr, "pcregrep: Failed to open %s: %s\n", fn->name,
3114            strerror(errno));
3115          goto EXIT2;
3116          }
3117        }
3118      while (fgets(buffer, PATBUFSIZE, fl) != NULL)
3119        {
3120        int frc;
3121        char *end = buffer + (int)strlen(buffer);
3122        while (end > buffer && isspace(end[-1])) end--;
3123        *end = 0;
3124        if (*buffer != 0)
3125          {
3126          frc = grep_or_recurse(buffer, dee_action == dee_RECURSE, FALSE);
3127          if (frc > 1) rc = frc;
3128            else if (frc == 0 && rc == 1) rc = 0;
3129          }
3130        }
3131      if (fl != stdin) fclose(fl);
3132      }
3133    
3134    /* After handling file-list, work through remaining arguments. Pass in the fact
3135    that there is only one argument at top level - this suppresses the file name if
3136    the argument is not a directory and filenames are not otherwise forced. */
3137    
3138  only_one_at_top = i == argc - 1;   /* Catch initial value of i */  only_one_at_top = i == argc - 1 && file_lists == NULL;
3139    
3140  for (; i < argc; i++)  for (; i < argc; i++)
3141    {    {
# Line 2062  for (; i < argc; i++) Line 3146  for (; i < argc; i++)
3146    }    }
3147    
3148  EXIT:  EXIT:
3149  if (pattern_list != NULL)  #ifdef SUPPORT_PCREGREP_JIT
3150    {  if (jit_stack != NULL) pcre_jit_stack_free(jit_stack);
3151    for (i = 0; i < pattern_count; i++) free(pattern_list[i]);  #endif
3152    free(pattern_list);  
3153    }  if (main_buffer != NULL) free(main_buffer);
3154  if (hints_list != NULL)  
3155    free_pattern_chain(patterns);
3156    free_pattern_chain(include_patterns);
3157    free_pattern_chain(include_dir_patterns);
3158    free_pattern_chain(exclude_patterns);
3159    free_pattern_chain(exclude_dir_patterns);
3160    
3161    free_file_chain(exclude_from);
3162    free_file_chain(include_from);
3163    free_file_chain(pattern_files);
3164    free_file_chain(file_lists);
3165    
3166    while (only_matching != NULL)
3167    {    {
3168    for (i = 0; i < hint_count; i++) free(hints_list[i]);    omstr *this = only_matching;
3169    free(hints_list);    only_matching = this->next;
3170      free(this);
3171    }    }
3172  return rc;  
3173    pcregrep_exit(rc);
3174    
3175  EXIT2:  EXIT2:
3176  rc = 2;  rc = 2;

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