1 #ifndef PCRS_H_INCLUDED
2 #define PCRS_H_INCLUDED
4 /*********************************************************************
6 * File : $Source: /cvsroot/ijbswa/current/pcrs.h,v $
8 * Purpose : This is the pre-pre-alpha realease of libpcrs. It is only
9 * published at this (ugly) stage of development, because it is
10 * needed for a new feature in JunkBuster.
12 * Apart from the code being quite a mess, no inconsistencies,
13 * memory leaks or functional bugs **should** be present.
15 * While you ROTFL at the code, you could just as well mail me
16 * (oes@paradis.rhein.de) with advice for improvement.
18 * pcrs is a supplement to the brilliant pcre library by Philip
19 * Hazel (ph10@cam.ac.uk) and adds Perl-style substitution. That
20 * is, it mimics Perl's 's' operator.
22 * Currently, there's no documentation besides comments and the
25 * Copyright : Written and copyright 2001 by Sourceforge IJBSWA team.
29 * Revision 1.6 2001/07/29 18:52:06 jongfoster
30 * Renaming _PCRS_H, and adding "extern C {}"
32 * Revision 1.5 2001/07/18 17:27:00 oes
33 * Changed interface; Cosmetics
35 * Revision 1.4 2001/06/29 13:33:19 oes
36 * - Cleaned up, commented and adapted to reflect the
38 * - Introduced the PCRS_* flags
40 * Revision 1.3 2001/06/09 10:58:57 jongfoster
41 * Removing a single unused #define which referenced BUFSIZ
43 * Revision 1.2 2001/05/25 11:03:55 oes
44 * Added sanity check for NULL jobs to pcrs_exec_substitution
46 * Revision 1.1.1.1 2001/05/15 13:59:02 oes
47 * Initial import of version 2.9.3 source tree
49 * Revision 1.4 2001/05/11 01:57:02 rodney
50 * Added new file header standard w/RCS control tags.
52 * revision 1.3 2001/05/08 02:38:13 rodney
53 * Changed C++ "//" style comment to C style comments.
55 * revision 1.2 2001/04/30 02:39:24 rodney
56 * Made this pcrs.h file conditionally included.
58 * revision 1.1 2001/04/16 21:10:38 rodney
61 *********************************************************************/
63 #define PCRS_H_VERSION "$Id: pcrs.h,v 1.6 2001/07/29 18:52:06 jongfoster Exp $"
80 #define PCRS_MAX_MATCHES 300
81 #define PCRS_MAX_SUBMATCHES 33
84 #define PCRS_ERR_NOMEM -10 /* Failed to acquire memory. */
85 #define PCRS_ERR_CMDSYNTAX -11 /* Syntax of s///-command */
86 #define PCRS_ERR_STUDY -12 /* pcre error while studying the pattern */
87 #define PCRS_ERR_BADJOB -13 /* NULL job pointer, pattern or substitute */
90 #define PCRS_GLOBAL 1 /* Job should be applied globally, as with perl's g option */
91 #define PCRS_SUCCESS 2 /* Job did previously match */
92 #define PCRS_TRIVIAL 4 /* Backreferences in the substitute are ignored */
98 /* A compiled substitute */
99 typedef struct PCRS_SUBSTITUTE {
100 char *text; /* The plaintext part of the substitute, with all backreferences stripped */
101 int backrefs; /* The number of backreferences */
102 int block_offset[PCRS_MAX_SUBMATCHES]; /* Array with the offsets of all plaintext blocks in text */
103 int block_length[PCRS_MAX_SUBMATCHES]; /* Array with the lengths of all plaintext blocks in text */
104 int backref[PCRS_MAX_SUBMATCHES]; /* Array with the backref number for all plaintext block borders */
105 int backref_count[PCRS_MAX_SUBMATCHES]; /* Array with the number of reference to each backref index */
108 typedef struct PCRS_MATCH {
110 int submatches; /* Number of submatches. Note: The zeroth is the whole match */
111 int submatch_offset[PCRS_MAX_SUBMATCHES]; /* Offset for each submatch in the subject */
112 int submatch_length[PCRS_MAX_SUBMATCHES]; /* Length of each submatch in the subject */
115 typedef struct PCRS_JOB {
116 pcre *pattern; /* The compiled pcre pattern */
117 pcre_extra *hints; /* The pcre hints for the pattern */
118 int options; /* The pcre options (numeric) */
119 int flags; /* The pcrs and user flags (see "Flags" above) */
120 pcrs_substitute *substitute; /* The compiles pcrs substitute */
121 struct PCRS_JOB *next; /* Pointer for chaining jobs to joblists */
129 extern pcrs_job *pcrs_compile_command(const char *command, int *errptr);
130 extern pcrs_job *pcrs_compile(const char *pattern, const char *substitute, const char *options, int *errptr);
131 extern int pcrs_execute(pcrs_job *job, char *subject, int subject_length, char **result, int *result_length);
134 extern pcrs_job *pcrs_free_job(pcrs_job *job);
135 extern void pcrs_free_joblist(pcrs_job *joblist);
138 extern int pcrs_compile_perl_options(const char *optstring, int *flags);
139 extern pcrs_substitute *pcrs_compile_replacement(const char *replacement, int trivialflag, int *errptr);
145 #endif /* ndef PCRS_H_INCLUDED */