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-rw-r--r--enc/sjis.c318
1 files changed, 318 insertions, 0 deletions
diff --git a/enc/sjis.c b/enc/sjis.c
new file mode 100644
index 0000000..7a54c9f
--- /dev/null
+++ b/enc/sjis.c
@@ -0,0 +1,318 @@
+/**********************************************************************
+ sjis.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 const int EncLen_SJIS[] = {
+ 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, 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, 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, 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, 1, 1
+};
+
+static const char SJIS_CAN_BE_TRAIL_TABLE[256] = {
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 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, 0,
+ 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, 0, 0, 0
+};
+
+#define SJIS_ISMB_FIRST(byte) (EncLen_SJIS[byte] > 1)
+#define SJIS_ISMB_TRAIL(byte) SJIS_CAN_BE_TRAIL_TABLE[(byte)]
+
+static int
+mbc_enc_len(const UChar* p)
+{
+ return EncLen_SJIS[*p];
+}
+
+static int
+code_to_mbclen(OnigCodePoint code)
+{
+ if (code < 256) {
+ if (EncLen_SJIS[(int )code] == 1)
+ return 1;
+ else
+ return 0;
+ }
+ else if (code <= 0xffff) {
+ return 2;
+ }
+ else
+ return ONIGERR_INVALID_CODE_POINT_VALUE;
+}
+
+static OnigCodePoint
+mbc_to_code(const UChar* p, const UChar* end)
+{
+ int c, i, len;
+ OnigCodePoint n;
+
+ len = enclen(ONIG_ENCODING_SJIS, p);
+ c = *p++;
+ n = c;
+ 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_mbc(OnigCodePoint code, UChar *buf)
+{
+ UChar *p = buf;
+
+ if ((code & 0xff00) != 0) *p++ = (UChar )(((code >> 8) & 0xff));
+ *p++ = (UChar )(code & 0xff);
+
+#if 0
+ if (enclen(ONIG_ENCODING_SJIS, buf) != (p - buf))
+ return REGERR_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)
+{
+ const UChar* p = *pp;
+
+ if (ONIGENC_IS_MBC_ASCII(p)) {
+ *lower = ONIGENC_ASCII_CODE_TO_LOWER_CASE(*p);
+ (*pp)++;
+ return 1;
+ }
+ else {
+ int i;
+ int len = enclen(ONIG_ENCODING_SJIS, p);
+
+ for (i = 0; i < len; i++) {
+ *lower++ = *p++;
+ }
+ (*pp) += len;
+ return len; /* return byte length of converted char to lower */
+ }
+}
+
+#if 0
+static int
+is_mbc_ambiguous(OnigCaseFoldType flag,
+ const UChar** pp, const UChar* end)
+{
+ return onigenc_mbn_is_mbc_ambiguous(ONIG_ENCODING_SJIS, flag, pp, end);
+
+}
+#endif
+
+#if 0
+static int
+is_code_ctype(OnigCodePoint code, unsigned int 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);
+ }
+ }
+
+ return FALSE;
+}
+#endif
+
+static UChar*
+left_adjust_char_head(const UChar* start, const UChar* s)
+{
+ const UChar *p;
+ int len;
+
+ if (s <= start) return (UChar* )s;
+ p = s;
+
+ if (SJIS_ISMB_TRAIL(*p)) {
+ while (p > start) {
+ if (! SJIS_ISMB_FIRST(*--p)) {
+ p++;
+ break;
+ }
+ }
+ }
+ len = enclen(ONIG_ENCODING_SJIS, 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;
+ return (SJIS_ISMB_TRAIL(c) ? FALSE : TRUE);
+}
+
+
+static int PropertyInited = 0;
+static const OnigCodePoint** PropertyList;
+static int PropertyListNum;
+static int PropertyListSize;
+static hash_table_type* PropertyNameTable;
+
+static const OnigCodePoint CR_Hiragana[] = {
+ 1,
+ 0x829f, 0x82f1
+}; /* CR_Hiragana */
+
+static const OnigCodePoint CR_Katakana[] = {
+ 4,
+ 0x00a6, 0x00af,
+ 0x00b1, 0x00dd,
+ 0x8340, 0x837e,
+ 0x8380, 0x8396,
+}; /* CR_Katakana */
+
+static int
+init_property_list(void)
+{
+ int r;
+
+ PROPERTY_LIST_ADD_PROP("Hiragana", CR_Hiragana);
+ PROPERTY_LIST_ADD_PROP("Katakana", CR_Katakana);
+ PropertyInited = 1;
+
+ end:
+ return r;
+}
+
+static int
+property_name_to_ctype(OnigEncoding enc, UChar* p, UChar* end)
+{
+ hash_data_type ctype;
+
+ PROPERTY_LIST_INIT_CHECK;
+
+ if (onig_st_lookup_strend(PropertyNameTable, p, end, &ctype) == 0) {
+ return onigenc_minimum_property_name_to_ctype(enc, p, end);
+ }
+
+ return (int )ctype;
+}
+
+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 {
+ PROPERTY_LIST_INIT_CHECK;
+
+ ctype -= (ONIGENC_MAX_STD_CTYPE + 1);
+ if (ctype >= (unsigned int )PropertyListNum)
+ 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;
+
+ PROPERTY_LIST_INIT_CHECK;
+
+ ctype -= (ONIGENC_MAX_STD_CTYPE + 1);
+ if (ctype >= (OnigCtype )PropertyListNum)
+ return ONIGERR_TYPE_BUG;
+
+ *ranges = PropertyList[ctype];
+ return 0;
+ }
+}
+
+OnigEncodingType OnigEncodingSJIS = {
+ mbc_enc_len,
+ "Shift_JIS", /* name */
+ 2, /* max byte length */
+ 1, /* min byte 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
+};
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