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-rw-r--r--src/euc_jp.c273
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diff --git a/src/euc_jp.c b/src/euc_jp.c
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+++ b/src/euc_jp.c
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+/**********************************************************************
+ euc_jp.c - Oniguruma (regular expression library)
+**********************************************************************/
+/*-
+ * Copyright (c) 2002-2016 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"
+
+#define eucjp_islead(c) ((UChar )((c) - 0xa1) > 0xfe - 0xa1)
+
+static const int EncLen_EUCJP[] = {
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 3,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1
+};
+
+static int
+mbc_enc_len(const UChar* p)
+{
+ return EncLen_EUCJP[*p];
+}
+
+static OnigCodePoint
+mbc_to_code(const UChar* p, const UChar* end)
+{
+ int c, i, len;
+ OnigCodePoint n;
+
+ len = enclen(ONIG_ENCODING_EUC_JP, p);
+ n = (OnigCodePoint )*p++;
+ if (len == 1) return n;
+
+ for (i = 1; i < len; i++) {
+ if (p >= end) break;
+ c = *p++;
+ n <<= 8; n += c;
+ }
+ return n;
+}
+
+static int
+code_to_mbclen(OnigCodePoint code)
+{
+ if (ONIGENC_IS_CODE_ASCII(code)) return 1;
+ else if ((code & 0xff0000) != 0) return 3;
+ else if ((code & 0xff00) != 0) return 2;
+ else
+ return ONIGERR_INVALID_CODE_POINT_VALUE;
+}
+
+#if 0
+static int
+code_to_mbc_first(OnigCodePoint code)
+{
+ int first;
+
+ if ((code & 0xff0000) != 0) {
+ first = (code >> 16) & 0xff;
+ }
+ else if ((code & 0xff00) != 0) {
+ first = (code >> 8) & 0xff;
+ }
+ else {
+ return (int )code;
+ }
+ return first;
+}
+#endif
+
+static int
+code_to_mbc(OnigCodePoint code, UChar *buf)
+{
+ UChar *p = buf;
+
+ if ((code & 0xff0000) != 0) *p++ = (UChar )(((code >> 16) & 0xff));
+ if ((code & 0xff00) != 0) *p++ = (UChar )(((code >> 8) & 0xff));
+ *p++ = (UChar )(code & 0xff);
+
+#if 1
+ if (enclen(ONIG_ENCODING_EUC_JP, buf) != (p - buf))
+ return ONIGERR_INVALID_CODE_POINT_VALUE;
+#endif
+ return p - buf;
+}
+
+static int
+mbc_case_fold(OnigCaseFoldType flag ARG_UNUSED,
+ const UChar** pp, const UChar* end ARG_UNUSED, UChar* lower)
+{
+ int len;
+ const UChar* p = *pp;
+
+ if (ONIGENC_IS_MBC_ASCII(p)) {
+ *lower = ONIGENC_ASCII_CODE_TO_LOWER_CASE(*p);
+ (*pp)++;
+ return 1;
+ }
+ else {
+ int i;
+
+ len = enclen(ONIG_ENCODING_EUC_JP, p);
+ for (i = 0; i < len; i++) {
+ *lower++ = *p++;
+ }
+ (*pp) += len;
+ return len; /* return byte length of converted char to lower */
+ }
+}
+
+static UChar*
+left_adjust_char_head(const UChar* start, const UChar* s)
+{
+ /* In this encoding
+ mb-trail bytes doesn't mix with single bytes.
+ */
+ const UChar *p;
+ int len;
+
+ if (s <= start) return (UChar* )s;
+ p = s;
+
+ while (!eucjp_islead(*p) && p > start) p--;
+ len = enclen(ONIG_ENCODING_EUC_JP, p);
+ if (p + len > s) return (UChar* )p;
+ p += len;
+ return (UChar* )(p + ((s - p) & ~1));
+}
+
+static int
+is_allowed_reverse_match(const UChar* s, const UChar* end ARG_UNUSED)
+{
+ const UChar c = *s;
+ if (c <= 0x7e || c == 0x8e || c == 0x8f)
+ return TRUE;
+ else
+ return FALSE;
+}
+
+
+static const OnigCodePoint CR_Hiragana[] = {
+ 1,
+ 0xa4a1, 0xa4f3
+}; /* CR_Hiragana */
+
+static const OnigCodePoint CR_Katakana[] = {
+ 3,
+ 0xa5a1, 0xa5f6,
+ 0xaaa6, 0xaaaf,
+ 0xaab1, 0xaadd
+}; /* CR_Katakana */
+
+static const OnigCodePoint* PropertyList[] = {
+ CR_Hiragana,
+ CR_Katakana
+};
+
+static int
+property_name_to_ctype(OnigEncoding enc, UChar* p, UChar* end)
+{
+ struct PropertyNameCtype* pc;
+ int len = end - p;
+ char q[32];
+
+ if (len < sizeof(q) - 1) {
+ xmemcpy(q, p, (size_t )len);
+ q[len] = '\0';
+ pc = euc_jp_lookup_property_name(q, len);
+ if (pc != 0)
+ return pc->ctype;
+ }
+
+ return ONIGERR_INVALID_CHAR_PROPERTY_NAME;
+}
+
+static int
+is_code_ctype(OnigCodePoint code, unsigned int ctype)
+{
+ if (ctype <= ONIGENC_MAX_STD_CTYPE) {
+ if (code < 128)
+ return ONIGENC_IS_ASCII_CODE_CTYPE(code, ctype);
+ else {
+ if (CTYPE_IS_WORD_GRAPH_PRINT(ctype)) {
+ return (code_to_mbclen(code) > 1 ? TRUE : FALSE);
+ }
+ }
+ }
+ else {
+ ctype -= (ONIGENC_MAX_STD_CTYPE + 1);
+ if (ctype >= (unsigned int )(sizeof(PropertyList)/sizeof(PropertyList[0])))
+ return ONIGERR_TYPE_BUG;
+
+ return onig_is_in_code_range((UChar* )PropertyList[ctype], code);
+ }
+
+ return FALSE;
+}
+
+static int
+get_ctype_code_range(OnigCtype ctype, OnigCodePoint* sb_out,
+ const OnigCodePoint* ranges[])
+{
+ if (ctype <= ONIGENC_MAX_STD_CTYPE) {
+ return ONIG_NO_SUPPORT_CONFIG;
+ }
+ else {
+ *sb_out = 0x80;
+
+ ctype -= (ONIGENC_MAX_STD_CTYPE + 1);
+ if (ctype >= (OnigCtype )sizeof(PropertyList)/sizeof(PropertyList[0]))
+ return ONIGERR_TYPE_BUG;
+
+ *ranges = PropertyList[ctype];
+ return 0;
+ }
+}
+
+
+OnigEncodingType OnigEncodingEUC_JP = {
+ mbc_enc_len,
+ "EUC-JP", /* name */
+ 3, /* max enc length */
+ 1, /* min enc length */
+ onigenc_is_mbc_newline_0x0a,
+ mbc_to_code,
+ code_to_mbclen,
+ code_to_mbc,
+ mbc_case_fold,
+ onigenc_ascii_apply_all_case_fold,
+ onigenc_ascii_get_case_fold_codes_by_str,
+ property_name_to_ctype,
+ is_code_ctype,
+ get_ctype_code_range,
+ left_adjust_char_head,
+ is_allowed_reverse_match,
+ NULL, /* init */
+ NULL /* is_initialized */
+};
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-31 22:59:45 +0000