| /********************************************************************** |
| regext.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. |
| */ |
| |
| #include "regint.h" |
| |
| static void |
| conv_ext0be32(const UChar* s, const UChar* end, UChar* conv) |
| { |
| while (s < end) { |
| *conv++ = '\0'; |
| *conv++ = '\0'; |
| *conv++ = '\0'; |
| *conv++ = *s++; |
| } |
| } |
| |
| static void |
| conv_ext0le32(const UChar* s, const UChar* end, UChar* conv) |
| { |
| while (s < end) { |
| *conv++ = *s++; |
| *conv++ = '\0'; |
| *conv++ = '\0'; |
| *conv++ = '\0'; |
| } |
| } |
| |
| static void |
| conv_ext0be(const UChar* s, const UChar* end, UChar* conv) |
| { |
| while (s < end) { |
| *conv++ = '\0'; |
| *conv++ = *s++; |
| } |
| } |
| |
| static void |
| conv_ext0le(const UChar* s, const UChar* end, UChar* conv) |
| { |
| while (s < end) { |
| *conv++ = *s++; |
| *conv++ = '\0'; |
| } |
| } |
| |
| static void |
| conv_swap4bytes(const UChar* s, const UChar* end, UChar* conv) |
| { |
| while (s < end) { |
| *conv++ = s[3]; |
| *conv++ = s[2]; |
| *conv++ = s[1]; |
| *conv++ = s[0]; |
| s += 4; |
| } |
| } |
| |
| static void |
| conv_swap2bytes(const UChar* s, const UChar* end, UChar* conv) |
| { |
| while (s < end) { |
| *conv++ = s[1]; |
| *conv++ = s[0]; |
| s += 2; |
| } |
| } |
| |
| static int |
| conv_encoding(OnigEncoding from, OnigEncoding to, const UChar* s, const UChar* end, |
| UChar** conv, UChar** conv_end) |
| { |
| int len = end - s; |
| |
| if (to == ONIG_ENCODING_UTF16_BE) { |
| if (from == ONIG_ENCODING_ASCII || from == ONIG_ENCODING_ISO_8859_1) { |
| *conv = (UChar* )xmalloc(len * 2); |
| CHECK_NULL_RETURN_MEMERR(*conv); |
| *conv_end = *conv + (len * 2); |
| conv_ext0be(s, end, *conv); |
| return 0; |
| } |
| else if (from == ONIG_ENCODING_UTF16_LE) { |
| swap16: |
| *conv = (UChar* )xmalloc(len); |
| CHECK_NULL_RETURN_MEMERR(*conv); |
| *conv_end = *conv + len; |
| conv_swap2bytes(s, end, *conv); |
| return 0; |
| } |
| } |
| else if (to == ONIG_ENCODING_UTF16_LE) { |
| if (from == ONIG_ENCODING_ASCII || from == ONIG_ENCODING_ISO_8859_1) { |
| *conv = (UChar* )xmalloc(len * 2); |
| CHECK_NULL_RETURN_MEMERR(*conv); |
| *conv_end = *conv + (len * 2); |
| conv_ext0le(s, end, *conv); |
| return 0; |
| } |
| else if (from == ONIG_ENCODING_UTF16_BE) { |
| goto swap16; |
| } |
| } |
| if (to == ONIG_ENCODING_UTF32_BE) { |
| if (from == ONIG_ENCODING_ASCII || from == ONIG_ENCODING_ISO_8859_1) { |
| *conv = (UChar* )xmalloc(len * 4); |
| CHECK_NULL_RETURN_MEMERR(*conv); |
| *conv_end = *conv + (len * 4); |
| conv_ext0be32(s, end, *conv); |
| return 0; |
| } |
| else if (from == ONIG_ENCODING_UTF32_LE) { |
| swap32: |
| *conv = (UChar* )xmalloc(len); |
| CHECK_NULL_RETURN_MEMERR(*conv); |
| *conv_end = *conv + len; |
| conv_swap4bytes(s, end, *conv); |
| return 0; |
| } |
| } |
| else if (to == ONIG_ENCODING_UTF32_LE) { |
| if (from == ONIG_ENCODING_ASCII || from == ONIG_ENCODING_ISO_8859_1) { |
| *conv = (UChar* )xmalloc(len * 4); |
| CHECK_NULL_RETURN_MEMERR(*conv); |
| *conv_end = *conv + (len * 4); |
| conv_ext0le32(s, end, *conv); |
| return 0; |
| } |
| else if (from == ONIG_ENCODING_UTF32_BE) { |
| goto swap32; |
| } |
| } |
| |
| return ONIGERR_NOT_SUPPORTED_ENCODING_COMBINATION; |
| } |
| |
| extern int |
| onig_new_deluxe(regex_t** reg, const UChar* pattern, const UChar* pattern_end, |
| OnigCompileInfo* ci, OnigErrorInfo* einfo) |
| { |
| int r; |
| UChar *cpat, *cpat_end; |
| |
| if (IS_NOT_NULL(einfo)) einfo->par = (UChar* )NULL; |
| |
| if (ci->pattern_enc != ci->target_enc) { |
| r = conv_encoding(ci->pattern_enc, ci->target_enc, pattern, pattern_end, |
| &cpat, &cpat_end); |
| if (r) return r; |
| } |
| else { |
| cpat = (UChar* )pattern; |
| cpat_end = (UChar* )pattern_end; |
| } |
| |
| *reg = (regex_t* )xmalloc(sizeof(regex_t)); |
| if (IS_NULL(*reg)) { |
| r = ONIGERR_MEMORY; |
| goto err2; |
| } |
| |
| r = onig_reg_init(*reg, ci->option, ci->case_fold_flag, ci->target_enc, |
| ci->syntax); |
| if (r) goto err; |
| |
| r = onig_compile(*reg, cpat, cpat_end, einfo); |
| if (r) { |
| err: |
| onig_free(*reg); |
| *reg = NULL; |
| } |
| |
| err2: |
| if (cpat != pattern) xfree(cpat); |
| |
| return r; |
| } |
| |
| #ifdef USE_RECOMPILE_API |
| extern int |
| onig_recompile_deluxe(regex_t* reg, const UChar* pattern, const UChar* pattern_end, |
| OnigCompileInfo* ci, OnigErrorInfo* einfo) |
| { |
| int r; |
| regex_t *new_reg; |
| |
| r = onig_new_deluxe(&new_reg, pattern, pattern_end, ci, einfo); |
| if (r) return r; |
| if (ONIG_STATE(reg) == ONIG_STATE_NORMAL) { |
| onig_transfer(reg, new_reg); |
| } |
| else { |
| onig_chain_link_add(reg, new_reg); |
| } |
| return 0; |
| } |
| #endif |