Annotation of embedaddon/php/ext/mbstring/oniguruma/regext.c, revision 1.1
1.1 ! misho 1: /**********************************************************************
! 2: regext.c - Oniguruma (regular expression library)
! 3: **********************************************************************/
! 4: /*-
! 5: * Copyright (c) 2002-2006 K.Kosako <sndgk393 AT ybb DOT ne DOT jp>
! 6: * All rights reserved.
! 7: *
! 8: * Redistribution and use in source and binary forms, with or without
! 9: * modification, are permitted provided that the following conditions
! 10: * are met:
! 11: * 1. Redistributions of source code must retain the above copyright
! 12: * notice, this list of conditions and the following disclaimer.
! 13: * 2. Redistributions in binary form must reproduce the above copyright
! 14: * notice, this list of conditions and the following disclaimer in the
! 15: * documentation and/or other materials provided with the distribution.
! 16: *
! 17: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
! 18: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 19: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 20: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
! 21: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 22: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 23: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 24: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 25: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 26: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 27: * SUCH DAMAGE.
! 28: */
! 29:
! 30: #include "regint.h"
! 31:
! 32: static void
! 33: conv_ext0be32(const UChar* s, const UChar* end, UChar* conv)
! 34: {
! 35: while (s < end) {
! 36: *conv++ = '\0';
! 37: *conv++ = '\0';
! 38: *conv++ = '\0';
! 39: *conv++ = *s++;
! 40: }
! 41: }
! 42:
! 43: static void
! 44: conv_ext0le32(const UChar* s, const UChar* end, UChar* conv)
! 45: {
! 46: while (s < end) {
! 47: *conv++ = *s++;
! 48: *conv++ = '\0';
! 49: *conv++ = '\0';
! 50: *conv++ = '\0';
! 51: }
! 52: }
! 53:
! 54: static void
! 55: conv_ext0be(const UChar* s, const UChar* end, UChar* conv)
! 56: {
! 57: while (s < end) {
! 58: *conv++ = '\0';
! 59: *conv++ = *s++;
! 60: }
! 61: }
! 62:
! 63: static void
! 64: conv_ext0le(const UChar* s, const UChar* end, UChar* conv)
! 65: {
! 66: while (s < end) {
! 67: *conv++ = *s++;
! 68: *conv++ = '\0';
! 69: }
! 70: }
! 71:
! 72: static void
! 73: conv_swap4bytes(const UChar* s, const UChar* end, UChar* conv)
! 74: {
! 75: while (s < end) {
! 76: *conv++ = s[3];
! 77: *conv++ = s[2];
! 78: *conv++ = s[1];
! 79: *conv++ = s[0];
! 80: s += 4;
! 81: }
! 82: }
! 83:
! 84: static void
! 85: conv_swap2bytes(const UChar* s, const UChar* end, UChar* conv)
! 86: {
! 87: while (s < end) {
! 88: *conv++ = s[1];
! 89: *conv++ = s[0];
! 90: s += 2;
! 91: }
! 92: }
! 93:
! 94: static int
! 95: conv_encoding(OnigEncoding from, OnigEncoding to, const UChar* s, const UChar* end,
! 96: UChar** conv, UChar** conv_end)
! 97: {
! 98: int len = end - s;
! 99:
! 100: if (to == ONIG_ENCODING_UTF16_BE) {
! 101: if (from == ONIG_ENCODING_ASCII || from == ONIG_ENCODING_ISO_8859_1) {
! 102: *conv = (UChar* )xmalloc(len * 2);
! 103: CHECK_NULL_RETURN_VAL(*conv, ONIGERR_MEMORY);
! 104: *conv_end = *conv + (len * 2);
! 105: conv_ext0be(s, end, *conv);
! 106: return 0;
! 107: }
! 108: else if (from == ONIG_ENCODING_UTF16_LE) {
! 109: swap16:
! 110: *conv = (UChar* )xmalloc(len);
! 111: CHECK_NULL_RETURN_VAL(*conv, ONIGERR_MEMORY);
! 112: *conv_end = *conv + len;
! 113: conv_swap2bytes(s, end, *conv);
! 114: return 0;
! 115: }
! 116: }
! 117: else if (to == ONIG_ENCODING_UTF16_LE) {
! 118: if (from == ONIG_ENCODING_ASCII || from == ONIG_ENCODING_ISO_8859_1) {
! 119: *conv = (UChar* )xmalloc(len * 2);
! 120: CHECK_NULL_RETURN_VAL(*conv, ONIGERR_MEMORY);
! 121: *conv_end = *conv + (len * 2);
! 122: conv_ext0le(s, end, *conv);
! 123: return 0;
! 124: }
! 125: else if (from == ONIG_ENCODING_UTF16_BE) {
! 126: goto swap16;
! 127: }
! 128: }
! 129: if (to == ONIG_ENCODING_UTF32_BE) {
! 130: if (from == ONIG_ENCODING_ASCII || from == ONIG_ENCODING_ISO_8859_1) {
! 131: *conv = (UChar* )xmalloc(len * 4);
! 132: CHECK_NULL_RETURN_VAL(*conv, ONIGERR_MEMORY);
! 133: *conv_end = *conv + (len * 4);
! 134: conv_ext0be32(s, end, *conv);
! 135: return 0;
! 136: }
! 137: else if (from == ONIG_ENCODING_UTF32_LE) {
! 138: swap32:
! 139: *conv = (UChar* )xmalloc(len);
! 140: CHECK_NULL_RETURN_VAL(*conv, ONIGERR_MEMORY);
! 141: *conv_end = *conv + len;
! 142: conv_swap4bytes(s, end, *conv);
! 143: return 0;
! 144: }
! 145: }
! 146: else if (to == ONIG_ENCODING_UTF32_LE) {
! 147: if (from == ONIG_ENCODING_ASCII || from == ONIG_ENCODING_ISO_8859_1) {
! 148: *conv = (UChar* )xmalloc(len * 4);
! 149: CHECK_NULL_RETURN_VAL(*conv, ONIGERR_MEMORY);
! 150: *conv_end = *conv + (len * 4);
! 151: conv_ext0le32(s, end, *conv);
! 152: return 0;
! 153: }
! 154: else if (from == ONIG_ENCODING_UTF32_BE) {
! 155: goto swap32;
! 156: }
! 157: }
! 158:
! 159: return ONIGERR_NOT_SUPPORTED_ENCODING_COMBINATION;
! 160: }
! 161:
! 162: extern int
! 163: onig_new_deluxe(regex_t** reg, const UChar* pattern, const UChar* pattern_end,
! 164: OnigCompileInfo* ci, OnigErrorInfo* einfo)
! 165: {
! 166: int r;
! 167: UChar *cpat, *cpat_end;
! 168:
! 169: if (IS_NOT_NULL(einfo)) einfo->par = (UChar* )NULL;
! 170:
! 171: if (ci->pattern_enc != ci->target_enc) {
! 172: r = conv_encoding(ci->pattern_enc, ci->target_enc, pattern, pattern_end,
! 173: &cpat, &cpat_end);
! 174: if (r) return r;
! 175: }
! 176: else {
! 177: cpat = (UChar* )pattern;
! 178: cpat_end = (UChar* )pattern_end;
! 179: }
! 180:
! 181: r = onig_alloc_init(reg, ci->option, ci->ambig_flag, ci->target_enc,
! 182: ci->syntax);
! 183: if (r) goto err;
! 184:
! 185: r = onig_compile(*reg, cpat, cpat_end, einfo);
! 186: if (r) {
! 187: onig_free(*reg);
! 188: *reg = NULL;
! 189: }
! 190:
! 191: err:
! 192: if (cpat != pattern) xfree(cpat);
! 193:
! 194: return r;
! 195: }
! 196:
! 197: #ifdef USE_RECOMPILE_API
! 198: extern int
! 199: onig_recompile_deluxe(regex_t* reg, const UChar* pattern, const UChar* pattern_end,
! 200: OnigCompileInfo* ci, OnigErrorInfo* einfo)
! 201: {
! 202: int r;
! 203: regex_t *new_reg;
! 204:
! 205: r = onig_new_deluxe(&new_reg, pattern, pattern_end, ci, einfo);
! 206: if (r) return r;
! 207: if (ONIG_STATE(reg) == ONIG_STATE_NORMAL) {
! 208: onig_transfer(reg, new_reg);
! 209: }
! 210: else {
! 211: onig_chain_link_add(reg, new_reg);
! 212: }
! 213: return 0;
! 214: }
! 215: #endif
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