mirror of git://git.psyced.org/git/psyclpc
63 lines
1.7 KiB
C
63 lines
1.7 KiB
C
#ifndef REGEXP_H_
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#define REGEXP_H_
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#include "driver.h"
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#include "pkg-pcre.h" /* for RE_ERROR_BACKTRACK */
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#define NSUBEXP 50
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/* Number of allowed () expressions.
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*/
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/* --- struct regexp: regular expression basis ---
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*
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* This structure is used to hold a compiled regular expression as well
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* intermediate results between two match calls.
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*
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* The structure is allocated big enough to fit the whole program
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* starting with .program.
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*/
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typedef struct regexp
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{
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char *startp[NSUBEXP];
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char *endp[NSUBEXP];
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/* After a match, the start and endpointers for the matched
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* () expressions.
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*/
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unsigned char regstart;
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/* Internal use: char that must begin a match, '\0' if non obvious
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*/
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unsigned char reganch;
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/* Internal use: is the match anchored (at beginning-of-line only)?
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*/
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unsigned char *regmust;
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/* Internal use: string (pointer into program) that match must
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* include, or NULL.
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*/
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int regmlen;
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/* Internal use: length of regmust.
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*/
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long regalloc; /* Allocated total length, used by rxcache */
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unsigned char program[1]; /* The compiled regexp. */
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} regexp;
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/* --- Prototypes --- */
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#ifdef DEBUG
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extern Bool regnarrate;
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void hs_regdump(regexp *rg);
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#endif
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extern regexp *hs_regcomp(unsigned char *expr, Bool excompat, char ** errmsg, int * erridx);
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extern int hs_regexec(regexp *prog, char *string, char *start);
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/* Return codes from regexec() */
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#define RE_MATCH (1)
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#define RE_NOMATCH (0)
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#define RE_ERROR_NULL (-1)
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#define RE_ERROR_CORRUPT (-2)
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/* RE_ERROR_BACKTRACK is defined in pkg-pcre.h */
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#endif /* REGEXP_H_ */
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