| 1 | /************************************************* |
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| 2 | * Perl-Compatible Regular Expressions * |
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| 3 | *************************************************/ |
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| 4 | |
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| 5 | /* Copyright (c) 1997-2001 University of Cambridge */ |
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| 6 | |
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| 7 | #ifndef _PCREPOSIX_H |
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| 8 | #define _PCREPOSIX_H |
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| 9 | |
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| 10 | /* This is the header for the POSIX wrapper interface to the PCRE Perl- |
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| 11 | Compatible Regular Expression library. It defines the things POSIX says should |
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| 12 | be there. I hope. */ |
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| 13 | |
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| 14 | /* Have to include stdlib.h in order to ensure that size_t is defined. */ |
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| 15 | |
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| 16 | #include <stdlib.h> |
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| 17 | |
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| 18 | /* Allow for C++ users */ |
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| 19 | |
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| 20 | #ifdef __cplusplus |
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| 21 | extern "C" { |
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| 22 | #endif |
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| 23 | |
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| 24 | /* Options defined by POSIX. */ |
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| 25 | |
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| 26 | #define REG_ICASE 0x01 |
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| 27 | #define REG_NEWLINE 0x02 |
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| 28 | #define REG_NOTBOL 0x04 |
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| 29 | #define REG_NOTEOL 0x08 |
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| 30 | |
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| 31 | /* These are not used by PCRE, but by defining them we make it easier |
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| 32 | to slot PCRE into existing programs that make POSIX calls. */ |
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| 33 | |
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| 34 | #define REG_EXTENDED 0 |
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| 35 | #define REG_NOSUB 0 |
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| 36 | |
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| 37 | /* Error values. Not all these are relevant or used by the wrapper. */ |
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| 38 | |
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| 39 | enum { |
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| 40 | REG_ASSERT = 1, /* internal error ? */ |
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| 41 | REG_BADBR, /* invalid repeat counts in {} */ |
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| 42 | REG_BADPAT, /* pattern error */ |
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| 43 | REG_BADRPT, /* ? * + invalid */ |
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| 44 | REG_EBRACE, /* unbalanced {} */ |
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| 45 | REG_EBRACK, /* unbalanced [] */ |
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| 46 | REG_ECOLLATE, /* collation error - not relevant */ |
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| 47 | REG_ECTYPE, /* bad class */ |
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| 48 | REG_EESCAPE, /* bad escape sequence */ |
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| 49 | REG_EMPTY, /* empty expression */ |
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| 50 | REG_EPAREN, /* unbalanced () */ |
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| 51 | REG_ERANGE, /* bad range inside [] */ |
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| 52 | REG_ESIZE, /* expression too big */ |
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| 53 | REG_ESPACE, /* failed to get memory */ |
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| 54 | REG_ESUBREG, /* bad back reference */ |
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| 55 | REG_INVARG, /* bad argument */ |
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| 56 | REG_NOMATCH /* match failed */ |
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| 57 | }; |
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| 58 | |
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| 59 | |
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| 60 | /* The structure representing a compiled regular expression. */ |
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| 61 | |
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| 62 | typedef struct { |
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| 63 | void *re_pcre; |
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| 64 | size_t re_nsub; |
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| 65 | size_t re_erroffset; |
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| 66 | } regex_t; |
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| 67 | |
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| 68 | /* The structure in which a captured offset is returned. */ |
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| 69 | |
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| 70 | typedef int regoff_t; |
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| 71 | |
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| 72 | typedef struct { |
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| 73 | regoff_t rm_so; |
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| 74 | regoff_t rm_eo; |
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| 75 | } regmatch_t; |
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| 76 | |
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| 77 | /* The functions */ |
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| 78 | |
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| 79 | extern int regcomp(regex_t *, const char *, int); |
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| 80 | extern int regexec(regex_t *, const char *, size_t, regmatch_t *, int); |
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| 81 | extern size_t regerror(int, const regex_t *, char *, size_t); |
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| 82 | extern void regfree(regex_t *); |
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| 83 | |
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| 84 | #ifdef __cplusplus |
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| 85 | } /* extern "C" */ |
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| 86 | #endif |
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| 87 | |
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| 88 | #endif /* End of pcreposix.h */ |
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