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Diffstat (limited to 'src/regposix.c')
| -rw-r--r-- | src/regposix.c | 306 |
1 files changed, 306 insertions, 0 deletions
diff --git a/src/regposix.c b/src/regposix.c new file mode 100644 index 0000000..bbe52dc --- /dev/null +++ b/src/regposix.c @@ -0,0 +1,306 @@ +/********************************************************************** + regposix.c - Oniguruma (regular expression library) +**********************************************************************/ +/*- + * Copyright (c) 2002-2008 K.Kosako <sndgk393 AT ybb DOT ne DOT jp> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#define regex_t onig_regex_t +#include "regint.h" +#undef regex_t +#include "onigposix.h" + +#define ONIG_C(reg) ((onig_regex_t* )((reg)->onig)) +#define PONIG_C(reg) ((onig_regex_t** )(&(reg)->onig)) + +/* #define ENC_STRING_LEN(enc,s,len) len = strlen(s) */ +#define ENC_STRING_LEN(enc,s,len) do { \ + if (ONIGENC_MBC_MINLEN(enc) == 1) { \ + UChar* tmps = (UChar* )(s); \ + while (*tmps != 0) tmps++; \ + len = tmps - (UChar* )(s); \ + } \ + else { \ + len = onigenc_str_bytelen_null(enc, (UChar* )s); \ + } \ +} while(0) + +typedef struct { + int onig_err; + int posix_err; +} O2PERR; + +static int +onig2posix_error_code(int code) +{ + static const O2PERR o2p[] = { + { ONIG_MISMATCH, REG_NOMATCH }, + { ONIG_NO_SUPPORT_CONFIG, REG_EONIG_INTERNAL }, + { ONIGERR_MEMORY, REG_ESPACE }, + { ONIGERR_MATCH_STACK_LIMIT_OVER, REG_EONIG_INTERNAL }, + { ONIGERR_TYPE_BUG, REG_EONIG_INTERNAL }, + { ONIGERR_PARSER_BUG, REG_EONIG_INTERNAL }, + { ONIGERR_STACK_BUG, REG_EONIG_INTERNAL }, + { ONIGERR_UNDEFINED_BYTECODE, REG_EONIG_INTERNAL }, + { ONIGERR_UNEXPECTED_BYTECODE, REG_EONIG_INTERNAL }, + { ONIGERR_DEFAULT_ENCODING_IS_NOT_SETTED, REG_EONIG_BADARG }, + { ONIGERR_SPECIFIED_ENCODING_CANT_CONVERT_TO_WIDE_CHAR, REG_EONIG_BADARG }, + { ONIGERR_FAIL_TO_INITIALIZE, REG_EONIG_INTERNAL }, + { ONIGERR_INVALID_ARGUMENT, REG_EONIG_BADARG }, + { ONIGERR_END_PATTERN_AT_LEFT_BRACE, REG_EBRACE }, + { ONIGERR_END_PATTERN_AT_LEFT_BRACKET, REG_EBRACK }, + { ONIGERR_EMPTY_CHAR_CLASS, REG_ECTYPE }, + { ONIGERR_PREMATURE_END_OF_CHAR_CLASS, REG_ECTYPE }, + { ONIGERR_END_PATTERN_AT_ESCAPE, REG_EESCAPE }, + { ONIGERR_END_PATTERN_AT_META, REG_EESCAPE }, + { ONIGERR_END_PATTERN_AT_CONTROL, REG_EESCAPE }, + { ONIGERR_META_CODE_SYNTAX, REG_BADPAT }, + { ONIGERR_CONTROL_CODE_SYNTAX, REG_BADPAT }, + { ONIGERR_CHAR_CLASS_VALUE_AT_END_OF_RANGE, REG_ECTYPE }, + { ONIGERR_CHAR_CLASS_VALUE_AT_START_OF_RANGE, REG_ECTYPE }, + { ONIGERR_UNMATCHED_RANGE_SPECIFIER_IN_CHAR_CLASS, REG_ECTYPE }, + { ONIGERR_TARGET_OF_REPEAT_OPERATOR_NOT_SPECIFIED, REG_BADRPT }, + { ONIGERR_TARGET_OF_REPEAT_OPERATOR_INVALID, REG_BADRPT }, + { ONIGERR_NESTED_REPEAT_OPERATOR, REG_BADRPT }, + { ONIGERR_UNMATCHED_CLOSE_PARENTHESIS, REG_EPAREN }, + { ONIGERR_END_PATTERN_WITH_UNMATCHED_PARENTHESIS, REG_EPAREN }, + { ONIGERR_END_PATTERN_IN_GROUP, REG_BADPAT }, + { ONIGERR_UNDEFINED_GROUP_OPTION, REG_BADPAT }, + { ONIGERR_INVALID_POSIX_BRACKET_TYPE, REG_BADPAT }, + { ONIGERR_INVALID_LOOK_BEHIND_PATTERN, REG_BADPAT }, + { ONIGERR_INVALID_REPEAT_RANGE_PATTERN, REG_BADPAT }, + { ONIGERR_TOO_BIG_NUMBER, REG_BADPAT }, + { ONIGERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE, REG_BADBR }, + { ONIGERR_UPPER_SMALLER_THAN_LOWER_IN_REPEAT_RANGE, REG_BADBR }, + { ONIGERR_EMPTY_RANGE_IN_CHAR_CLASS, REG_ECTYPE }, + { ONIGERR_MISMATCH_CODE_LENGTH_IN_CLASS_RANGE, REG_ECTYPE }, + { ONIGERR_TOO_MANY_MULTI_BYTE_RANGES, REG_ECTYPE }, + { ONIGERR_TOO_SHORT_MULTI_BYTE_STRING, REG_BADPAT }, + { ONIGERR_TOO_BIG_BACKREF_NUMBER, REG_ESUBREG }, + { ONIGERR_INVALID_BACKREF, REG_ESUBREG }, + { ONIGERR_NUMBERED_BACKREF_OR_CALL_NOT_ALLOWED, REG_BADPAT }, + { ONIGERR_TOO_BIG_WIDE_CHAR_VALUE, REG_EONIG_BADWC }, + { ONIGERR_TOO_LONG_WIDE_CHAR_VALUE, REG_EONIG_BADWC }, + { ONIGERR_INVALID_CODE_POINT_VALUE, REG_EONIG_BADWC }, + { ONIGERR_EMPTY_GROUP_NAME, REG_BADPAT }, + { ONIGERR_INVALID_GROUP_NAME, REG_BADPAT }, + { ONIGERR_INVALID_CHAR_IN_GROUP_NAME, REG_BADPAT }, + { ONIGERR_UNDEFINED_NAME_REFERENCE, REG_BADPAT }, + { ONIGERR_UNDEFINED_GROUP_REFERENCE, REG_BADPAT }, + { ONIGERR_MULTIPLEX_DEFINED_NAME, REG_BADPAT }, + { ONIGERR_MULTIPLEX_DEFINITION_NAME_CALL, REG_BADPAT }, + { ONIGERR_NEVER_ENDING_RECURSION, REG_BADPAT }, + { ONIGERR_GROUP_NUMBER_OVER_FOR_CAPTURE_HISTORY, REG_BADPAT }, + { ONIGERR_INVALID_CHAR_PROPERTY_NAME, REG_BADPAT }, + { ONIGERR_NOT_SUPPORTED_ENCODING_COMBINATION, REG_EONIG_BADARG }, + { ONIGERR_LIBRARY_IS_NOT_INITIALIZED, REG_EONIG_INTERNAL } + }; + + int i; + + if (code >= 0) return 0; + + for (i = 0; i < (int )(sizeof(o2p) / sizeof(o2p[0])); i++) { + if (code == o2p[i].onig_err) + return o2p[i].posix_err; + } + + return REG_EONIG_INTERNAL; /* but, unknown error code */ +} + +extern int +regcomp(regex_t* reg, const char* pattern, int posix_options) +{ + int r, len; + OnigSyntaxType* syntax = OnigDefaultSyntax; + OnigOptionType options; + + if ((posix_options & REG_EXTENDED) == 0) + syntax = ONIG_SYNTAX_POSIX_BASIC; + + options = syntax->options; + if ((posix_options & REG_ICASE) != 0) + ONIG_OPTION_ON(options, ONIG_OPTION_IGNORECASE); + if ((posix_options & REG_NEWLINE) != 0) { + ONIG_OPTION_ON( options, ONIG_OPTION_NEGATE_SINGLELINE); + ONIG_OPTION_OFF(options, ONIG_OPTION_SINGLELINE); + } + + reg->comp_options = posix_options; + + ENC_STRING_LEN(OnigEncDefaultCharEncoding, pattern, len); + r = onig_new(PONIG_C(reg), (UChar* )pattern, (UChar* )(pattern + len), + options, OnigEncDefaultCharEncoding, syntax, + (OnigErrorInfo* )NULL); + if (r != ONIG_NORMAL) { + return onig2posix_error_code(r); + } + + reg->re_nsub = ONIG_C(reg)->num_mem; + return 0; +} + +extern int +regexec(regex_t* reg, const char* str, size_t nmatch, + regmatch_t pmatch[], int posix_options) +{ + int r, i, len; + UChar* end; + regmatch_t* pm; + OnigOptionType options; + + options = ONIG_OPTION_POSIX_REGION; + if ((posix_options & REG_NOTBOL) != 0) options |= ONIG_OPTION_NOTBOL; + if ((posix_options & REG_NOTEOL) != 0) options |= ONIG_OPTION_NOTEOL; + + if (nmatch == 0 || (reg->comp_options & REG_NOSUB) != 0) { + pm = (regmatch_t* )NULL; + nmatch = 0; + } + else if ((int )nmatch < ONIG_C(reg)->num_mem + 1) { + pm = (regmatch_t* )xmalloc(sizeof(regmatch_t) + * (ONIG_C(reg)->num_mem + 1)); + if (pm == NULL) + return REG_ESPACE; + } + else { + pm = pmatch; + } + + ENC_STRING_LEN(ONIG_C(reg)->enc, str, len); + end = (UChar* )(str + len); + r = onig_search(ONIG_C(reg), (UChar* )str, end, (UChar* )str, end, + (OnigRegion* )pm, options); + + if (r >= 0) { + r = 0; /* Match */ + if (pm != pmatch && pm != NULL) { + xmemcpy(pmatch, pm, sizeof(regmatch_t) * nmatch); + } + } + else if (r == ONIG_MISMATCH) { + r = REG_NOMATCH; + for (i = 0; i < (int )nmatch; i++) + pmatch[i].rm_so = pmatch[i].rm_eo = ONIG_REGION_NOTPOS; + } + else { + r = onig2posix_error_code(r); + } + + if (pm != pmatch && pm != NULL) + xfree(pm); + +#if 0 + if (reg->re_nsub > nmatch - 1) + reg->re_nsub = (nmatch <= 1 ? 0 : nmatch - 1); +#endif + + return r; +} + +extern void +regfree(regex_t* reg) +{ + onig_free(ONIG_C(reg)); +} + + +extern void +reg_set_encoding(int mb_code) +{ + OnigEncoding enc; + + switch (mb_code) { + case REG_POSIX_ENCODING_ASCII: + enc = ONIG_ENCODING_ASCII; + break; + case REG_POSIX_ENCODING_EUC_JP: + enc = ONIG_ENCODING_EUC_JP; + break; + case REG_POSIX_ENCODING_SJIS: + enc = ONIG_ENCODING_SJIS; + break; + case REG_POSIX_ENCODING_UTF8: + enc = ONIG_ENCODING_UTF8; + break; + case REG_POSIX_ENCODING_UTF16_BE: + enc = ONIG_ENCODING_UTF16_BE; + break; + case REG_POSIX_ENCODING_UTF16_LE: + enc = ONIG_ENCODING_UTF16_LE; + break; + + default: + return ; + break; + } + + onig_initialize(0, 0); + onig_initialize_encoding(enc); + + onigenc_set_default_encoding(enc); +} + +extern int +reg_name_to_group_numbers(regex_t* reg, + const unsigned char* name, const unsigned char* name_end, int** nums) +{ + return onig_name_to_group_numbers(ONIG_C(reg), name, name_end, nums); +} + +typedef struct { + int (*func)(const unsigned char*, const unsigned char*,int,int*,regex_t*,void*); + regex_t* reg; + void* arg; +} i_wrap; + +static int +i_wrapper(const UChar* name, const UChar* name_end, int ng, int* gs, + onig_regex_t* reg ARG_UNUSED, void* arg) +{ + i_wrap* warg = (i_wrap* )arg; + + return (*warg->func)(name, name_end, ng, gs, warg->reg, warg->arg); +} + +extern int +reg_foreach_name(regex_t* reg, + int (*func)(const unsigned char*, const unsigned char*,int,int*,regex_t*,void*), + void* arg) +{ + i_wrap warg; + + warg.func = func; + warg.reg = reg; + warg.arg = arg; + + return onig_foreach_name(ONIG_C(reg), i_wrapper, &warg); +} + +extern int +reg_number_of_names(regex_t* reg) +{ + return onig_number_of_names(ONIG_C(reg)); +} |