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Diffstat (limited to 'ext/pcre/pcrelib/pcregrep.c')
| -rw-r--r-- | ext/pcre/pcrelib/pcregrep.c | 1162 |
1 files changed, 0 insertions, 1162 deletions
diff --git a/ext/pcre/pcrelib/pcregrep.c b/ext/pcre/pcrelib/pcregrep.c deleted file mode 100644 index f6e5180557..0000000000 --- a/ext/pcre/pcrelib/pcregrep.c +++ /dev/null @@ -1,1162 +0,0 @@ -/************************************************* -* pcregrep program * -*************************************************/ - -/* This is a grep program that uses the PCRE regular expression library to do -its pattern matching. On a Unix or Win32 system it can recurse into -directories. - - Copyright (c) 1997-2005 University of Cambridge - ------------------------------------------------------------------------------ -Redistribution and use in source and binary forms, with or without -modification, are permitted provided that the following conditions are met: - - * Redistributions of source code must retain the above copyright notice, - this list of conditions and the following disclaimer. - - * Redistributions in binary form must reproduce the above copyright - notice, this list of conditions and the following disclaimer in the - documentation and/or other materials provided with the distribution. - - * Neither the name of the University of Cambridge nor the names of its - contributors may be used to endorse or promote products derived from - this software without specific prior written permission. - -THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" -AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE -IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE -ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE -LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR -CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF -SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS -INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN -CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) -ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE -POSSIBILITY OF SUCH DAMAGE. ------------------------------------------------------------------------------ -*/ - -#include <ctype.h> -#include <stdio.h> -#include <string.h> -#include <stdlib.h> -#include <errno.h> - -#include <sys/types.h> -#include <sys/stat.h> -#include <unistd.h> - -#include "config.h" -#include "pcre.h" - -#define FALSE 0 -#define TRUE 1 - -typedef int BOOL; - -#define VERSION "4.0 07-Jun-2005" -#define MAX_PATTERN_COUNT 100 - -#if BUFSIZ > 8192 -#define MBUFTHIRD BUFSIZ -#else -#define MBUFTHIRD 8192 -#endif - - - -/************************************************* -* Global variables * -*************************************************/ - -static char *pattern_filename = NULL; -static char *stdin_name = (char *)"(standard input)"; -static int pattern_count = 0; -static pcre **pattern_list; -static pcre_extra **hints_list; - -static char *include_pattern = NULL; -static char *exclude_pattern = NULL; - -static pcre *include_compiled = NULL; -static pcre *exclude_compiled = NULL; - -static int after_context = 0; -static int before_context = 0; -static int both_context = 0; - -static BOOL count_only = FALSE; -static BOOL filenames = TRUE; -static BOOL filenames_only = FALSE; -static BOOL filenames_nomatch_only = FALSE; -static BOOL hyphenpending = FALSE; -static BOOL invert = FALSE; -static BOOL multiline = FALSE; -static BOOL number = FALSE; -static BOOL quiet = FALSE; -static BOOL recurse = FALSE; -static BOOL silent = FALSE; -static BOOL whole_lines = FALSE; -static BOOL word_match = FALSE; - -/* Structure for options and list of them */ - -enum { OP_NODATA, OP_STRING, OP_NUMBER }; - -typedef struct option_item { - int type; - int one_char; - void *dataptr; - const char *long_name; - const char *help_text; -} option_item; - -static option_item optionlist[] = { - { OP_NODATA, -1, NULL, "", " terminate options" }, - { OP_NODATA, -1, NULL, "help", "display this help and exit" }, - { OP_NUMBER, 'A', &after_context, "after-context=number", "set number of following context lines" }, - { OP_NUMBER, 'B', &before_context, "before-context=number", "set number of prior context lines" }, - { OP_NUMBER, 'C', &both_context, "context=number", "set number of context lines, before & after" }, - { OP_NODATA, 'c', NULL, "count", "print only a count of matching lines per FILE" }, - { OP_STRING, 'f', &pattern_filename, "file=path", "read patterns from file" }, - { OP_NODATA, 'h', NULL, "no-filename", "suppress the prefixing filename on output" }, - { OP_NODATA, 'i', NULL, "ignore-case", "ignore case distinctions" }, - { OP_NODATA, 'l', NULL, "files-with-matches", "print only FILE names containing matches" }, - { OP_NODATA, 'L', NULL, "files-without-match","print only FILE names not containing matches" }, - { OP_STRING, -1, &stdin_name, "label=name", "set name for standard input" }, - { OP_NODATA, 'M', NULL, "multiline", "run in multiline mode" }, - { OP_NODATA, 'n', NULL, "line-number", "print line number with output lines" }, - { OP_NODATA, 'q', NULL, "quiet", "suppress output, just set return code" }, - { OP_NODATA, 'r', NULL, "recursive", "recursively scan sub-directories" }, - { OP_STRING, -1, &exclude_pattern, "exclude=pattern","exclude matching files when recursing" }, - { OP_STRING, -1, &include_pattern, "include=pattern","include matching files when recursing" }, - { OP_NODATA, 's', NULL, "no-messages", "suppress error messages" }, - { OP_NODATA, 'u', NULL, "utf-8", "use UTF-8 mode" }, - { OP_NODATA, 'V', NULL, "version", "print version information and exit" }, - { OP_NODATA, 'v', NULL, "invert-match", "select non-matching lines" }, - { OP_NODATA, 'w', NULL, "word-regex(p)", "force PATTERN to match only as a word" }, - { OP_NODATA, 'x', NULL, "line-regex(p)", "force PATTERN to match only whole lines" }, - { OP_NODATA, 0, NULL, NULL, NULL } -}; - - -/************************************************* -* Functions for directory scanning * -*************************************************/ - -/* These functions are defined so that they can be made system specific, -although at present the only ones are for Unix, Win32, and for "no directory -recursion support". */ - - -/************* Directory scanning in Unix ***********/ - -#if IS_UNIX -#include <sys/types.h> -#include <sys/stat.h> -#include <dirent.h> - -typedef DIR directory_type; - -static int -isdirectory(char *filename) -{ -struct stat statbuf; -if (stat(filename, &statbuf) < 0) - return 0; /* In the expectation that opening as a file will fail */ -return ((statbuf.st_mode & S_IFMT) == S_IFDIR)? '/' : 0; -} - -static directory_type * -opendirectory(char *filename) -{ -return opendir(filename); -} - -static char * -readdirectory(directory_type *dir) -{ -for (;;) - { - struct dirent *dent = readdir(dir); - if (dent == NULL) return NULL; - if (strcmp(dent->d_name, ".") != 0 && strcmp(dent->d_name, "..") != 0) - return dent->d_name; - } -return NULL; /* Keep compiler happy; never executed */ -} - -static void -closedirectory(directory_type *dir) -{ -closedir(dir); -} - - -/************* Directory scanning in Win32 ***********/ - -/* I (Philip Hazel) have no means of testing this code. It was contributed by -Lionel Fourquaux. David Burgess added a patch to define INVALID_FILE_ATTRIBUTES -when it did not exist. */ - - -#elif HAVE_WIN32API - -#ifndef STRICT -# define STRICT -#endif -#ifndef WIN32_LEAN_AND_MEAN -# define WIN32_LEAN_AND_MEAN -#endif -#ifndef INVALID_FILE_ATTRIBUTES -#define INVALID_FILE_ATTRIBUTES 0xFFFFFFFF -#endif - -#include <windows.h> - -typedef struct directory_type -{ -HANDLE handle; -BOOL first; -WIN32_FIND_DATA data; -} directory_type; - -int -isdirectory(char *filename) -{ -DWORD attr = GetFileAttributes(filename); -if (attr == INVALID_FILE_ATTRIBUTES) - return 0; -return ((attr & FILE_ATTRIBUTE_DIRECTORY) != 0) ? '/' : 0; -} - -directory_type * -opendirectory(char *filename) -{ -size_t len; -char *pattern; -directory_type *dir; -DWORD err; -len = strlen(filename); -pattern = (char *) malloc(len + 3); -dir = (directory_type *) malloc(sizeof(*dir)); -if ((pattern == NULL) || (dir == NULL)) - { - fprintf(stderr, "pcregrep: malloc failed\n"); - exit(2); - } -memcpy(pattern, filename, len); -memcpy(&(pattern[len]), "\\*", 3); -dir->handle = FindFirstFile(pattern, &(dir->data)); -if (dir->handle != INVALID_HANDLE_VALUE) - { - free(pattern); - dir->first = TRUE; - return dir; - } -err = GetLastError(); -free(pattern); -free(dir); -errno = (err == ERROR_ACCESS_DENIED) ? EACCES : ENOENT; -return NULL; -} - -char * -readdirectory(directory_type *dir) -{ -for (;;) - { - if (!dir->first) - { - if (!FindNextFile(dir->handle, &(dir->data))) - return NULL; - } - else - { - dir->first = FALSE; - } - if (strcmp(dir->data.cFileName, ".") != 0 && strcmp(dir->data.cFileName, "..") != 0) - return dir->data.cFileName; - } -#ifndef _MSC_VER -return NULL; /* Keep compiler happy; never executed */ -#endif -} - -void -closedirectory(directory_type *dir) -{ -FindClose(dir->handle); -free(dir); -} - - -/************* Directory scanning when we can't do it ***********/ - -/* The type is void, and apart from isdirectory(), the functions do nothing. */ - -#else - -typedef void directory_type; - -int isdirectory(char *filename) { return FALSE; } -directory_type * opendirectory(char *filename) {} -char *readdirectory(directory_type *dir) {} -void closedirectory(directory_type *dir) {} - -#endif - - - -#if ! HAVE_STRERROR -/************************************************* -* Provide strerror() for non-ANSI libraries * -*************************************************/ - -/* Some old-fashioned systems still around (e.g. SunOS4) don't have strerror() -in their libraries, but can provide the same facility by this simple -alternative function. */ - -extern int sys_nerr; -extern char *sys_errlist[]; - -char * -strerror(int n) -{ -if (n < 0 || n >= sys_nerr) return "unknown error number"; -return sys_errlist[n]; -} -#endif /* HAVE_STRERROR */ - - - -/************************************************* -* Print the previous "after" lines * -*************************************************/ - -/* This is called if we are about to lose said lines because of buffer filling, -and at the end of the file. - -Arguments: - lastmatchnumber the number of the last matching line, plus one - lastmatchrestart where we restarted after the last match - endptr end of available data - printname filename for printing - -Returns: nothing -*/ - -static void do_after_lines(int lastmatchnumber, char *lastmatchrestart, - char *endptr, char *printname) -{ -if (after_context > 0 && lastmatchnumber > 0) - { - int count = 0; - while (lastmatchrestart < endptr && count++ < after_context) - { - char *pp = lastmatchrestart; - if (printname != NULL) fprintf(stdout, "%s-", printname); - if (number) fprintf(stdout, "%d-", lastmatchnumber++); - while (*pp != '\n') pp++; - fprintf(stdout, "%.*s", pp - lastmatchrestart + 1, lastmatchrestart); - lastmatchrestart = pp + 1; - } - hyphenpending = TRUE; - } -} - - - -/************************************************* -* Grep an individual file * -*************************************************/ - -/* This is called from grep_or_recurse() below. It uses a buffer that is three -times the value of MBUFTHIRD. The matching point is never allowed to stray into -the top third of the buffer, thus keeping more of the file available for -context printing or for multiline scanning. For large files, the pointer will -be in the middle third most of the time, so the bottom third is available for -"before" context printing. - -Arguments: - in the fopened FILE stream - printname the file name if it is to be printed for each match - or NULL if the file name is not to be printed - it cannot be NULL if filenames[_nomatch]_only is set - -Returns: 0 if there was at least one match - 1 otherwise (no matches) -*/ - -static int -pcregrep(FILE *in, char *printname) -{ -int rc = 1; -int linenumber = 1; -int lastmatchnumber = 0; -int count = 0; -int offsets[99]; -char *lastmatchrestart = NULL; -char buffer[3*MBUFTHIRD]; -char *ptr = buffer; -char *endptr; -size_t bufflength; -BOOL endhyphenpending = FALSE; - -/* Do the first read into the start of the buffer and set up the pointer to -end of what we have. */ - -bufflength = fread(buffer, 1, 3*MBUFTHIRD, in); -endptr = buffer + bufflength; - -/* Loop while the current pointer is not at the end of the file. For large -files, endptr will be at the end of the buffer when we are in the middle of the -file, but ptr will never get there, because as soon as it gets over 2/3 of the -way, the buffer is shifted left and re-filled. */ - -while (ptr < endptr) - { - int i; - BOOL match = FALSE; - char *t = ptr; - size_t length, linelength; - - /* At this point, ptr is at the start of a line. We need to find the length - of the subject string to pass to pcre_exec(). In multiline mode, it is the - length remainder of the data in the buffer. Otherwise, it is the length of - the next line. After matching, we always advance by the length of the next - line. In multiline mode the PCRE_FIRSTLINE option is used for compiling, so - that any match is constrained to be in the first line. */ - - linelength = 0; - while (t < endptr && *t++ != '\n') linelength++; - length = multiline? endptr - ptr : linelength; - - /* Run through all the patterns until one matches. Note that we don't include - the final newline in the subject string. */ - - for (i = 0; !match && i < pattern_count; i++) - { - match = pcre_exec(pattern_list[i], hints_list[i], ptr, length, 0, 0, - offsets, 99) >= 0; - } - - /* If it's a match or a not-match (as required), print what's wanted. */ - - if (match != invert) - { - BOOL hyphenprinted = FALSE; - - if (filenames_nomatch_only) return 1; - - if (count_only) count++; - - else if (filenames_only) - { - fprintf(stdout, "%s\n", printname); - return 0; - } - - else if (quiet) return 0; - - else - { - /* See if there is a requirement to print some "after" lines from a - previous match. We never print any overlaps. */ - - if (after_context > 0 && lastmatchnumber > 0) - { - int linecount = 0; - char *p = lastmatchrestart; - - while (p < ptr && linecount < after_context) - { - while (*p != '\n') p++; - p++; - linecount++; - } - - /* It is important to advance lastmatchrestart during this printing so - that it interacts correctly with any "before" printing below. */ - - while (lastmatchrestart < p) - { - char *pp = lastmatchrestart; - if (printname != NULL) fprintf(stdout, "%s-", printname); - if (number) fprintf(stdout, "%d-", lastmatchnumber++); - while (*pp != '\n') pp++; - fprintf(stdout, "%.*s", pp - lastmatchrestart + 1, lastmatchrestart); - lastmatchrestart = pp + 1; - } - if (lastmatchrestart != ptr) hyphenpending = TRUE; - } - - /* If there were non-contiguous lines printed above, insert hyphens. */ - - if (hyphenpending) - { - fprintf(stdout, "--\n"); - hyphenpending = FALSE; - hyphenprinted = TRUE; - } - - /* See if there is a requirement to print some "before" lines for this - match. Again, don't print overlaps. */ - - if (before_context > 0) - { - int linecount = 0; - char *p = ptr; - - while (p > buffer && (lastmatchnumber == 0 || p > lastmatchrestart) && - linecount++ < before_context) - { - p--; - while (p > buffer && p[-1] != '\n') p--; - } - - if (lastmatchnumber > 0 && p > lastmatchrestart && !hyphenprinted) - fprintf(stdout, "--\n"); - - while (p < ptr) - { - char *pp = p; - if (printname != NULL) fprintf(stdout, "%s-", printname); - if (number) fprintf(stdout, "%d-", linenumber - linecount--); - while (*pp != '\n') pp++; - fprintf(stdout, "%.*s", pp - p + 1, p); - p = pp + 1; - } - } - - /* Now print the matching line(s); ensure we set hyphenpending at the end - of the file. */ - - endhyphenpending = TRUE; - if (printname != NULL) fprintf(stdout, "%s:", printname); - if (number) fprintf(stdout, "%d:", linenumber); - - /* In multiline mode, we want to print to the end of the line in which - the end of the matched string is found, so we adjust linelength and the - line number appropriately. Because the PCRE_FIRSTLINE option is set, the - start of the match will always be before the first \n character. */ - - if (multiline) - { - char *endmatch = ptr + offsets[1]; - t = ptr; - while (t < endmatch) { if (*t++ == '\n') linenumber++; } - while (endmatch < endptr && *endmatch != '\n') endmatch++; - linelength = endmatch - ptr; - } - - fprintf(stdout, "%.*s\n", linelength, ptr); - } - - rc = 0; /* Had some success */ - - /* Remember where the last match happened for after_context. We remember - where we are about to restart, and that line's number. */ - - lastmatchrestart = ptr + linelength + 1; - lastmatchnumber = linenumber + 1; - } - - /* Advance to after the newline and increment the line number. */ - - ptr += linelength + 1; - linenumber++; - - /* If we haven't yet reached the end of the file (the buffer is full), and - the current point is in the top 1/3 of the buffer, slide the buffer down by - 1/3 and refill it. Before we do this, if some unprinted "after" lines are - about to be lost, print them. */ - - if (bufflength >= sizeof(buffer) && ptr > buffer + 2*MBUFTHIRD) - { - if (after_context > 0 && - lastmatchnumber > 0 && - lastmatchrestart < buffer + MBUFTHIRD) - { - do_after_lines(lastmatchnumber, lastmatchrestart, endptr, printname); - lastmatchnumber = 0; - } - - /* Now do the shuffle */ - - memmove(buffer, buffer + MBUFTHIRD, 2*MBUFTHIRD); - ptr -= MBUFTHIRD; - bufflength = 2*MBUFTHIRD + fread(buffer + 2*MBUFTHIRD, 1, MBUFTHIRD, in); - endptr = buffer + bufflength; - - /* Adjust any last match point */ - - if (lastmatchnumber > 0) lastmatchrestart -= MBUFTHIRD; - } - } /* Loop through the whole file */ - -/* End of file; print final "after" lines if wanted; do_after_lines sets -hyphenpending if it prints something. */ - -do_after_lines(lastmatchnumber, lastmatchrestart, endptr, printname); -hyphenpending |= endhyphenpending; - -/* Print the file name if we are looking for those without matches and there -were none. If we found a match, we won't have got this far. */ - -if (filenames_nomatch_only) - { - fprintf(stdout, "%s\n", printname); - return 0; - } - -/* Print the match count if wanted */ - -if (count_only) - { - if (printname != NULL) fprintf(stdout, "%s:", printname); - fprintf(stdout, "%d\n", count); - } - -return rc; -} - - - -/************************************************* -* Grep a file or recurse into a directory * -*************************************************/ - -/* Given a path name, if it's a directory, scan all the files if we are -recursing; if it's a file, grep it. - -Arguments: - pathname the path to investigate - dir_recurse TRUE if recursing is wanted (-r) - show_filenames TRUE if file names are wanted for multiple files, except - for the only file at top level when not filenames_only - only_one_at_top TRUE if the path is the only one at toplevel - -Returns: 0 if there was at least one match - 1 if there were no matches - 2 there was some kind of error - -However, file opening failures are suppressed if "silent" is set. -*/ - -static int -grep_or_recurse(char *pathname, BOOL dir_recurse, BOOL show_filenames, - BOOL only_one_at_top) -{ -int rc = 1; -int sep; -FILE *in; -char *printname; - -/* If the file name is "-" we scan stdin */ - -if (strcmp(pathname, "-") == 0) - { - return pcregrep(stdin, - (filenames_only || filenames_nomatch_only || - (show_filenames && !only_one_at_top))? - stdin_name : NULL); - } - -/* If the file is a directory and 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 && dir_recurse) - { - char buffer[1024]; - char *nextfile; - directory_type *dir = opendirectory(pathname); - - if (dir == NULL) - { - if (!silent) - fprintf(stderr, "pcregrep: Failed to open directory %s: %s\n", pathname, - strerror(errno)); - return 2; - } - - while ((nextfile = readdirectory(dir)) != NULL) - { - int frc, blen; - sprintf(buffer, "%.512s%c%.128s", pathname, sep, 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; - - frc = grep_or_recurse(buffer, dir_recurse, TRUE, FALSE); - if (frc > 1) rc = frc; - else if (frc == 0 && rc == 1) rc = 0; - } - - closedirectory(dir); - return rc; - } - -/* If the file is not a directory, or we are not recursing, scan it. If this is -the first and only argument at top level, we don't show the file name (unless -we are only showing the file name). Otherwise, control is via the -show_filenames variable. */ - -in = fopen(pathname, "r"); -if (in == NULL) - { - if (!silent) - fprintf(stderr, "pcregrep: Failed to open %s: %s\n", pathname, - strerror(errno)); - return 2; - } - -printname = (filenames_only || filenames_nomatch_only || - (show_filenames && !only_one_at_top))? pathname : NULL; - -rc = pcregrep(in, printname); - -fclose(in); -return rc; -} - - - - -/************************************************* -* Usage function * -*************************************************/ - -static int -usage(int rc) -{ -fprintf(stderr, "Usage: pcregrep [-LMVcfhilnqrsvwx] [long-options] [pattern] [file1 file2 ...]\n"); -fprintf(stderr, "Type `pcregrep --help' for more information.\n"); -return rc; -} - - - - -/************************************************* -* Help function * -*************************************************/ - -static void -help(void) -{ -option_item *op; - -printf("Usage: pcregrep [OPTION]... [PATTERN] [FILE1 FILE2 ...]\n"); -printf("Search for PATTERN in each FILE or standard input.\n"); -printf("PATTERN must be present if -f is not used.\n"); -printf("\"-\" can be used as a file name to mean STDIN.\n"); -printf("Example: pcregrep -i 'hello.*world' menu.h main.c\n\n"); - -printf("Options:\n"); - -for (op = optionlist; op->one_char != 0; op++) - { - int n; - char s[4]; - if (op->one_char > 0) sprintf(s, "-%c,", op->one_char); else strcpy(s, " "); - printf(" %s --%s%n", s, op->long_name, &n); - n = 30 - n; - if (n < 1) n = 1; - printf("%.*s%s\n", n, " ", op->help_text); - } - -printf("\nWhen reading patterns from a file instead of using a command line option,\n"); -printf("trailing white space is removed and blank lines are ignored.\n"); -printf("There is a maximum of %d patterns.\n", MAX_PATTERN_COUNT); - -printf("\nWith no FILEs, read standard input. If fewer than two FILEs given, assume -h.\n"); -printf("Exit status is 0 if any matches, 1 if no matches, and 2 if trouble.\n"); -} - - - - -/************************************************* -* Handle a single-letter, no data option * -*************************************************/ - -static int -handle_option(int letter, int options) -{ -switch(letter) - { - case -1: help(); exit(0); - case 'c': count_only = TRUE; break; - case 'h': filenames = FALSE; break; - case 'i': options |= PCRE_CASELESS; break; - case 'l': filenames_only = TRUE; break; - case 'L': filenames_nomatch_only = TRUE; break; - case 'M': multiline = TRUE; options |= PCRE_MULTILINE|PCRE_FIRSTLINE; break; - case 'n': number = TRUE; break; - case 'q': quiet = TRUE; break; - case 'r': recurse = TRUE; break; - case 's': silent = TRUE; break; - case 'u': options |= PCRE_UTF8; break; - case 'v': invert = TRUE; break; - case 'w': word_match = TRUE; break; - case 'x': whole_lines = TRUE; break; - - case 'V': - fprintf(stderr, "pcregrep version %s using ", VERSION); - fprintf(stderr, "PCRE version %s\n", pcre_version()); - exit(0); - break; - - default: - fprintf(stderr, "pcregrep: Unknown option -%c\n", letter); - exit(usage(2)); - } - -return options; -} - - - - -/************************************************* -* Main program * -*************************************************/ - -/* Returns 0 if something matched, 1 if nothing matched, 2 after an error. */ - -int -main(int argc, char **argv) -{ -int i, j; -int rc = 1; -int options = 0; -int errptr; -const char *error; -BOOL only_one_at_top; - -/* Process the options */ - -for (i = 1; i < argc; i++) - { - option_item *op = NULL; - char *option_data = (char *)""; /* default to keep compiler happy */ - BOOL longop; - BOOL longopwasequals = FALSE; - - if (argv[i][0] != '-') break; - - /* If we hit an argument that is just "-", it may be a reference to STDIN, - but only if we have previously had -f to define the patterns. */ - - if (argv[i][1] == 0) - { - if (pattern_filename != NULL) break; - else exit(usage(2)); - } - - /* Handle a long name option, or -- to terminate the options */ - - if (argv[i][1] == '-') - { - char *arg = argv[i] + 2; - char *argequals = strchr(arg, '='); - - if (*arg == 0) /* -- terminates options */ - { - i++; - break; /* out of the options-handling loop */ - } - - longop = TRUE; - - /* Some long options have data that follows after =, for example file=name. - Some options have variations in the long name spelling: specifically, we - allow "regexp" because GNU grep allows it, though I personally go along - with Jeff Friedl in preferring "regex" without the "p". These options are - entered in the table as "regex(p)". No option is in both these categories, - fortunately. */ - - for (op = optionlist; op->one_char != 0; op++) - { - char *opbra = strchr(op->long_name, '('); - char *equals = strchr(op->long_name, '='); - if (opbra == NULL) /* Not a (p) case */ - { - if (equals == NULL) /* Not thing=data case */ - { - if (strcmp(arg, op->long_name) == 0) break; - } - else /* Special case xxx=data */ - { - int oplen = equals - op->long_name; - int arglen = (argequals == NULL)? strlen(arg) : argequals - arg; - if (oplen == arglen && strncmp(arg, op->long_name, oplen) == 0) - { - option_data = arg + arglen; - if (*option_data == '=') - { - option_data++; - longopwasequals = TRUE; - } - break; - } - } - } - else /* Special case xxxx(p) */ - { - char buff1[24]; - char buff2[24]; - int baselen = opbra - op->long_name; - sprintf(buff1, "%.*s", baselen, op->long_name); - sprintf(buff2, "%s%.*s", buff1, strlen(op->long_name) - baselen - 2, - opbra + 1); - if (strcmp(arg, buff1) == 0 || strcmp(arg, buff2) == 0) - break; - } - } - - if (op->one_char == 0) - { - fprintf(stderr, "pcregrep: Unknown option %s\n", argv[i]); - exit(usage(2)); - } - } - - /* One-char options; many that have no data may be in a single argument; we - continue till we hit the last one or one that needs data. */ - - else - { - char *s = argv[i] + 1; - longop = FALSE; - while (*s != 0) - { - for (op = optionlist; op->one_char != 0; op++) - { if (*s == op->one_char) break; } - if (op->one_char == 0) - { - fprintf(stderr, "pcregrep: Unknown option letter '%c' in \"%s\"\n", - *s, argv[i]); - exit(usage(2)); - } - if (op->type != OP_NODATA || s[1] == 0) - { - option_data = s+1; - break; - } - options = handle_option(*s++, options); - } - } - - /* At this point we should have op pointing to a matched option */ - - if (op->type == OP_NODATA) - options = handle_option(op->one_char, options); - else - { - if (*option_data == 0) - { - if (i >= argc - 1 || longopwasequals) - { - fprintf(stderr, "pcregrep: Data missing after %s\n", argv[i]); - exit(usage(2)); - } - option_data = argv[++i]; - } - - if (op->type == OP_STRING) *((char **)op->dataptr) = option_data; else - { - char *endptr; - int n = strtoul(option_data, &endptr, 10); - if (*endptr != 0) - { - if (longop) - fprintf(stderr, "pcregrep: Malformed number \"%s\" after --%s\n", - option_data, 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; - } - } - } - -/* Options have been decoded. If -C was used, its value is used as a default -for -A and -B. */ - -if (both_context > 0) - { - if (after_context == 0) after_context = both_context; - if (before_context == 0) before_context = both_context; - } - -pattern_list = (pcre **)malloc(MAX_PATTERN_COUNT * sizeof(pcre *)); -hints_list = (pcre_extra **)malloc(MAX_PATTERN_COUNT * sizeof(pcre_extra *)); - -if (pattern_list == NULL || hints_list == NULL) - { - fprintf(stderr, "pcregrep: malloc failed\n"); - return 2; - } - -/* Compile the regular expression(s). */ - -if (pattern_filename != NULL) - { - FILE *f = fopen(pattern_filename, "r"); - char buffer[MBUFTHIRD + 16]; - char *rdstart; - int adjust = 0; - - if (f == NULL) - { - fprintf(stderr, "pcregrep: Failed to open %s: %s\n", pattern_filename, - strerror(errno)); - return 2; - } - - if (whole_lines) - { - strcpy(buffer, "^(?:"); - adjust = 4; - } - else if (word_match) - { - strcpy(buffer, "\\b"); - adjust = 2; - } - - rdstart = buffer + adjust; - while (fgets(rdstart, MBUFTHIRD, f) != NULL) - { - char *s = rdstart + (int)strlen(rdstart); - if (pattern_count >= MAX_PATTERN_COUNT) - { - fprintf(stderr, "pcregrep: Too many patterns in file (max %d)\n", - MAX_PATTERN_COUNT); - return 2; - } - while (s > rdstart && isspace((unsigned char)(s[-1]))) s--; - if (s == rdstart) continue; - if (whole_lines) strcpy(s, ")$"); - else if (word_match)strcpy(s, "\\b"); - else *s = 0; - pattern_list[pattern_count] = pcre_compile(buffer, options, &error, - &errptr, NULL); - if (pattern_list[pattern_count++] == NULL) - { - fprintf(stderr, "pcregrep: Error in regex number %d at offset %d: %s\n", - pattern_count, errptr - adjust, error); - return 2; - } - } - fclose(f); - } - -/* If no file name, a single regex must be given inline. */ - -else - { - char buffer[MBUFTHIRD + 16]; - char *pat; - int adjust = 0; - - if (i >= argc) return usage(2); - - if (whole_lines) - { - sprintf(buffer, "^(?:%.*s)$", MBUFTHIRD, argv[i++]); - pat = buffer; - adjust = 4; - } - else if (word_match) - { - sprintf(buffer, "\\b%.*s\\b", MBUFTHIRD, argv[i++]); - pat = buffer; - adjust = 2; - } - else pat = argv[i++]; - - pattern_list[0] = pcre_compile(pat, options, &error, &errptr, NULL); - - if (pattern_list[0] == NULL) - { - fprintf(stderr, "pcregrep: Error in regex at offset %d: %s\n", - errptr - adjust, error); - return 2; - } - pattern_count++; - } - -/* Study the regular expressions, as we will be running them many times */ - -for (j = 0; j < pattern_count; j++) - { - hints_list[j] = pcre_study(pattern_list[j], 0, &error); - if (error != NULL) - { - char s[16]; - if (pattern_count == 1) s[0] = 0; else sprintf(s, " number %d", j); - fprintf(stderr, "pcregrep: Error while studying regex%s: %s\n", s, error); - return 2; - } - } - -/* If there are include or exclude patterns, compile them. */ - -if (exclude_pattern != NULL) - { - exclude_compiled = pcre_compile(exclude_pattern, 0, &error, &errptr, NULL); - if (exclude_compiled == NULL) - { - fprintf(stderr, "pcregrep: Error in 'exclude' regex at offset %d: %s\n", - errptr, error); - return 2; - } - } - -if (include_pattern != NULL) - { - include_compiled = pcre_compile(include_pattern, 0, &error, &errptr, NULL); - if (include_compiled == NULL) - { - fprintf(stderr, "pcregrep: Error in 'include' regex at offset %d: %s\n", - errptr, error); - return 2; - } - } - -/* If there are no further arguments, do the business on stdin and exit */ - -if (i >= argc) return pcregrep(stdin, - (filenames_only || filenames_nomatch_only)? stdin_name : NULL); - -/* Otherwise, work through the remaining arguments as files or directories. -Pass in the fact that there is only one argument at top level - this suppresses -the file name if the argument is not a directory and filenames_only is not set. -*/ - -only_one_at_top = (i == argc - 1); - -for (; i < argc; i++) - { - int frc = grep_or_recurse(argv[i], recurse, filenames, only_one_at_top); - if (frc > 1) rc = frc; - else if (frc == 0 && rc == 1) rc = 0; - } - -return rc; -} - -/* End of pcregrep */ |