1 /************************************************* 2 * Perl-Compatible Regular Expressions * 3 *************************************************/ 4 5 /* PCRE2 is a library of functions to support regular expressions whose syntax 6 and semantics are as close as possible to those of the Perl 5 language. 7 8 Written by Philip Hazel 9 Original API code Copyright (c) 1997-2012 University of Cambridge 10 New API code Copyright (c) 2016 University of Cambridge 11 12 ----------------------------------------------------------------------------- 13 Redistribution and use in source and binary forms, with or without 14 modification, are permitted provided that the following conditions are met: 15 16 * Redistributions of source code must retain the above copyright notice, 17 this list of conditions and the following disclaimer. 18 19 * Redistributions in binary form must reproduce the above copyright 20 notice, this list of conditions and the following disclaimer in the 21 documentation and/or other materials provided with the distribution. 22 23 * Neither the name of the University of Cambridge nor the names of its 24 contributors may be used to endorse or promote products derived from 25 this software without specific prior written permission. 26 27 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 28 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 29 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 30 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 31 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 POSSIBILITY OF SUCH DAMAGE. 38 ----------------------------------------------------------------------------- 39 */ 40 41 42 /* Have to include stdlib.h in order to ensure that size_t is defined. */ 43 44 #include <stdlib.h> 45 46 /* Allow for C++ users */ 47 48 #ifdef __cplusplus 49 extern "C" { 50 #endif 51 52 /* Options, mostly defined by POSIX, but with some extras. */ 53 54 #define REG_ICASE 0x0001 /* Maps to PCRE2_CASELESS */ 55 #define REG_NEWLINE 0x0002 /* Maps to PCRE2_MULTILINE */ 56 #define REG_NOTBOL 0x0004 /* Maps to PCRE2_NOTBOL */ 57 #define REG_NOTEOL 0x0008 /* Maps to PCRE2_NOTEOL */ 58 #define REG_DOTALL 0x0010 /* NOT defined by POSIX; maps to PCRE2_DOTALL */ 59 #define REG_NOSUB 0x0020 /* Do not report what was matched */ 60 #define REG_UTF 0x0040 /* NOT defined by POSIX; maps to PCRE2_UTF */ 61 #define REG_STARTEND 0x0080 /* BSD feature: pass subject string by so,eo */ 62 #define REG_NOTEMPTY 0x0100 /* NOT defined by POSIX; maps to PCRE2_NOTEMPTY */ 63 #define REG_UNGREEDY 0x0200 /* NOT defined by POSIX; maps to PCRE2_UNGREEDY */ 64 #define REG_UCP 0x0400 /* NOT defined by POSIX; maps to PCRE2_UCP */ 65 #define REG_PEND 0x0800 /* GNU feature: pass end pattern by re_endp */ 66 #define REG_NOSPEC 0x1000 /* Maps to PCRE2_LITERAL */ 67 68 /* This is not used by PCRE2, but by defining it we make it easier 69 to slot PCRE2 into existing programs that make POSIX calls. */ 70 71 #define REG_EXTENDED 0 72 73 /* Error values. Not all these are relevant or used by the wrapper. */ 74 75 enum { 76 REG_ASSERT = 1, /* internal error ? */ 77 REG_BADBR, /* invalid repeat counts in {} */ 78 REG_BADPAT, /* pattern error */ 79 REG_BADRPT, /* ? * + invalid */ 80 REG_EBRACE, /* unbalanced {} */ 81 REG_EBRACK, /* unbalanced [] */ 82 REG_ECOLLATE, /* collation error - not relevant */ 83 REG_ECTYPE, /* bad class */ 84 REG_EESCAPE, /* bad escape sequence */ 85 REG_EMPTY, /* empty expression */ 86 REG_EPAREN, /* unbalanced () */ 87 REG_ERANGE, /* bad range inside [] */ 88 REG_ESIZE, /* expression too big */ 89 REG_ESPACE, /* failed to get memory */ 90 REG_ESUBREG, /* bad back reference */ 91 REG_INVARG, /* bad argument */ 92 REG_NOMATCH /* match failed */ 93 }; 94 95 96 /* The structure representing a compiled regular expression. It is also used 97 for passing the pattern end pointer when REG_PEND is set. */ 98 99 typedef struct { 100 void *re_pcre2_code; 101 void *re_match_data; 102 const char *re_endp; 103 size_t re_nsub; 104 size_t re_erroffset; 105 int re_cflags; 106 } regex_t; 107 108 /* The structure in which a captured offset is returned. */ 109 110 typedef int regoff_t; 111 112 typedef struct { 113 regoff_t rm_so; 114 regoff_t rm_eo; 115 } regmatch_t; 116 117 /* When an application links to a PCRE2 DLL in Windows, the symbols that are 118 imported have to be identified as such. When building PCRE2, the appropriate 119 export settings are needed, and are set in pcre2posix.c before including this 120 file. */ 121 122 #if defined(_WIN32) && !defined(PCRE2_STATIC) && !defined(PCRE2POSIX_EXP_DECL) 123 # define PCRE2POSIX_EXP_DECL extern __declspec(dllimport) 124 # define PCRE2POSIX_EXP_DEFN __declspec(dllimport) 125 #endif 126 127 /* By default, we use the standard "extern" declarations. */ 128 129 #ifndef PCRE2POSIX_EXP_DECL 130 # ifdef __cplusplus 131 # define PCRE2POSIX_EXP_DECL extern "C" 132 # define PCRE2POSIX_EXP_DEFN extern "C" 133 # else 134 # define PCRE2POSIX_EXP_DECL extern 135 # define PCRE2POSIX_EXP_DEFN extern 136 # endif 137 #endif 138 139 /* The functions */ 140 141 PCRE2POSIX_EXP_DECL int regcomp(regex_t *, const char *, int); 142 PCRE2POSIX_EXP_DECL int regexec(const regex_t *, const char *, size_t, 143 regmatch_t *, int); 144 PCRE2POSIX_EXP_DECL size_t regerror(int, const regex_t *, char *, size_t); 145 PCRE2POSIX_EXP_DECL void regfree(regex_t *); 146 147 #ifdef __cplusplus 148 } /* extern "C" */ 149 #endif 150 151 /* End of pcre2posix.h */ 152