X-Git-Url: http://www.privoxy.org/gitweb/?p=privoxy.git;a=blobdiff_plain;f=pcrs.h;h=abff3caa5418ca3c4bcd08c4d5fe111b7d9f4961;hp=527c8c927bb2a705a8908ad20fc4b6679496f255;hb=960ae61d1bce3289d3a79290a3d0c583620c2414;hpb=d814babe165dec1e28d1c8f5f8c6e1f891e06aed diff --git a/pcrs.h b/pcrs.h index 527c8c92..abff3caa 100644 --- a/pcrs.h +++ b/pcrs.h @@ -7,58 +7,34 @@ * * Purpose : Header file for pcrs.c * - * Copyright : see pcrs.c + * Copyright : Written and Copyright (C) 2000, 2001 by Andreas S. Oesterhelt + * * - * Revisions : - * $Log: pcrs.h,v $ - * Revision 1.8 2001/08/15 15:32:50 oes - * Replaced the hard limit for the maximum number of matches - * by dynamic reallocation + * Copyright (C) 2006, 2007 Fabian Keil * - * Revision 1.7 2001/08/05 13:13:11 jongfoster - * Making parameters "const" where possible. + * This program is free software; you can redistribute it + * and/or modify it under the terms of the GNU General + * Public License as published by the Free Software + * Foundation; either version 2 of the License, or (at + * your option) any later version. * - * Revision 1.6 2001/07/29 18:52:06 jongfoster - * Renaming _PCRS_H, and adding "extern C {}" + * This program is distributed in the hope that it will + * be useful, but WITHOUT ANY WARRANTY; without even the + * implied warranty of MERCHANTABILITY or FITNESS FOR A + * PARTICULAR PURPOSE. See the GNU General Public + * License for more details. * - * Revision 1.5 2001/07/18 17:27:00 oes - * Changed interface; Cosmetics - * - * Revision 1.4 2001/06/29 13:33:19 oes - * - Cleaned up, commented and adapted to reflect the - * changes in pcrs.c - * - Introduced the PCRS_* flags - * - * Revision 1.3 2001/06/09 10:58:57 jongfoster - * Removing a single unused #define which referenced BUFSIZ - * - * Revision 1.2 2001/05/25 11:03:55 oes - * Added sanity check for NULL jobs to pcrs_exec_substitution - * - * Revision 1.1.1.1 2001/05/15 13:59:02 oes - * Initial import of version 2.9.3 source tree - * - * Revision 1.4 2001/05/11 01:57:02 rodney - * Added new file header standard w/RCS control tags. - * - * revision 1.3 2001/05/08 02:38:13 rodney - * Changed C++ "//" style comment to C style comments. - * - * revision 1.2 2001/04/30 02:39:24 rodney - * Made this pcrs.h file conditionally included. - * - * revision 1.1 2001/04/16 21:10:38 rodney - * Initial checkin + * The GNU General Public License should be included with + * this file. If not, you can view it at + * http://www.gnu.org/copyleft/gpl.html + * or write to the Free Software Foundation, Inc., 59 + * Temple Place - Suite 330, Boston, MA 02111-1307, USA. * *********************************************************************/ -#define PCRS_H_VERSION "$Id: pcrs.h,v 1.8 2001/08/15 15:32:50 oes Exp $" - +#ifndef _PCRE_H #include - -#ifdef __cplusplus -extern "C" { #endif /* @@ -73,17 +49,28 @@ extern "C" { #define PCRS_MAX_MATCH_INIT 40 /* Initial amount of matches that can be stored in global searches */ #define PCRS_MAX_MATCH_GROW 1.6 /* Factor by which storage for matches is extended if exhausted */ -/* Error codes */ -#define PCRS_ERR_NOMEM -10 /* Failed to acquire memory. */ -#define PCRS_ERR_CMDSYNTAX -11 /* Syntax of s///-command */ -#define PCRS_ERR_STUDY -12 /* pcre error while studying the pattern */ -#define PCRS_ERR_BADJOB -13 /* NULL job pointer, pattern or substitute */ -#define PCRS_WARN_BADREF -14 /* Backreference out of range */ +/* + * PCRS error codes + * + * They are supposed to be handled together with PCRE error + * codes and have to start with an offset to prevent overlaps. + * + * PCRE 6.7 uses error codes from -1 to -21, PCRS error codes + * below -100 should be safe for a while. + */ +#define PCRS_ERR_NOMEM -100 /* Failed to acquire memory. */ +#define PCRS_ERR_CMDSYNTAX -101 /* Syntax of s///-command */ +#define PCRS_ERR_STUDY -102 /* pcre error while studying the pattern */ +#define PCRS_ERR_BADJOB -103 /* NULL job pointer, pattern or substitute */ +#define PCRS_WARN_BADREF -104 /* Backreference out of range */ +#define PCRS_WARN_TRUNCATION -105 /* At least one pcrs variable was too big, + * only the first part was used. */ /* Flags */ #define PCRS_GLOBAL 1 /* Job should be applied globally, as with perl's g option */ #define PCRS_TRIVIAL 2 /* Backreferences in the substitute are ignored */ #define PCRS_SUCCESS 4 /* Job did previously match */ +#define PCRS_DYNAMIC 8 /* Job is dynamic (used to disable JIT compilation) */ /* @@ -93,14 +80,16 @@ extern "C" { /* A compiled substitute */ typedef struct { - char *text; /* The plaintext part of the substitute, with all backreferences stripped */ - int backrefs; /* The number of backreferences */ - int block_offset[PCRS_MAX_SUBMATCHES]; /* Array with the offsets of all plaintext blocks in text */ - int block_length[PCRS_MAX_SUBMATCHES]; /* Array with the lengths of all plaintext blocks in text */ - int backref[PCRS_MAX_SUBMATCHES]; /* Array with the backref number for all plaintext block borders */ - int backref_count[PCRS_MAX_SUBMATCHES + 2]; /* Array with the number of references to each backref index */ + char *text; /* The plaintext part of the substitute, with all backreferences stripped */ + size_t length; /* The substitute may not be a valid C string so we can't rely on strlen(). */ + int backrefs; /* The number of backreferences */ + int block_offset[PCRS_MAX_SUBMATCHES]; /* Array with the offsets of all plaintext blocks in text */ + size_t block_length[PCRS_MAX_SUBMATCHES]; /* Array with the lengths of all plaintext blocks in text */ + int backref[PCRS_MAX_SUBMATCHES]; /* Array with the backref number for all plaintext block borders */ + int backref_count[PCRS_MAX_SUBMATCHES + 2]; /* Array with the number of references to each backref index */ } pcrs_substitute; + /* * A match, including all captured subpatterns (submatches) * Note: The zeroth is the whole match, the PCRS_MAX_SUBMATCHES + 0th @@ -109,12 +98,13 @@ typedef struct { */ typedef struct { - int submatches; /* Number of captured subpatterns */ - int submatch_offset[PCRS_MAX_SUBMATCHES + 2]; /* Offset for each submatch in the subject */ - int submatch_length[PCRS_MAX_SUBMATCHES + 2]; /* Length of each submatch in the subject */ + int submatches; /* Number of captured subpatterns */ + int submatch_offset[PCRS_MAX_SUBMATCHES + 2]; /* Offset for each submatch in the subject */ + size_t submatch_length[PCRS_MAX_SUBMATCHES + 2]; /* Length of each submatch in the subject */ } pcrs_match; -/* A pcrs job */ + +/* A PCRS job */ typedef struct PCRS_JOB { pcre *pattern; /* The compiled pcre pattern */ @@ -133,7 +123,7 @@ typedef struct PCRS_JOB { /* Main usage */ extern pcrs_job *pcrs_compile_command(const char *command, int *errptr); extern pcrs_job *pcrs_compile(const char *pattern, const char *substitute, const char *options, int *errptr); -extern int pcrs_execute(pcrs_job *job, char *subject, size_t subject_length, char **result, size_t *result_length); +extern int pcrs_execute(pcrs_job *job, const char *subject, size_t subject_length, char **result, size_t *result_length); extern int pcrs_execute_list(pcrs_job *joblist, char *subject, size_t subject_length, char **result, size_t *result_length); /* Freeing jobs */ @@ -143,13 +133,28 @@ extern void pcrs_free_joblist(pcrs_job *joblist); /* Info on errors: */ extern const char *pcrs_strerror(const int error); -/* Expert usage */ -extern int pcrs_parse_perl_options(const char *optstring, int *flags); -extern pcrs_substitute *pcrs_compile_replacement(const char *replacement, int trivialflag, int capturecount, int *errptr); - - -#ifdef __cplusplus -} /* extern "C" */ +extern int pcrs_job_is_dynamic(char *job); +extern char pcrs_get_delimiter(const char *string); +extern char *pcrs_execute_single_command(const char *subject, const char *pcrs_command, int *hits); +/* + * Variable/value pair for dynamic pcrs commands. + */ +struct pcrs_variable +{ + const char *name; + char *value; + int static_value; +}; + +extern pcrs_job *pcrs_compile_dynamic_command(char *pcrs_command, const struct pcrs_variable v[], int *error); + +/* Only relevant for maximum pcrs variable size */ +#ifndef PCRS_BUFFER_SIZE +#define PCRS_BUFFER_SIZE 4000 +#endif /* ndef PCRS_BUFFER_SIZE */ + +#ifdef FUZZ +extern pcrs_substitute *pcrs_compile_fuzzed_replacement(const char *replacement, int *errptr); #endif #endif /* ndef PCRS_H_INCLUDED */