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-rw-r--r--jni/ruby/enc/utf_16le.c246
1 files changed, 246 insertions, 0 deletions
diff --git a/jni/ruby/enc/utf_16le.c b/jni/ruby/enc/utf_16le.c
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+++ b/jni/ruby/enc/utf_16le.c
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+/**********************************************************************
+ utf_16le.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 "regenc.h"
+
+#if 0
+static const int EncLen_UTF16[] = {
+ 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, 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, 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, 4, 4, 4, 4, 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
+};
+#endif
+
+static int
+utf16le_mbc_enc_len(const UChar* p, const OnigUChar* e,
+ OnigEncoding enc ARG_UNUSED)
+{
+ int len = (int)(e - p);
+ UChar byte;
+ if (len < 2)
+ return ONIGENC_CONSTRUCT_MBCLEN_NEEDMORE(1);
+ byte = p[1];
+ if (!UTF16_IS_SURROGATE(byte)) {
+ return ONIGENC_CONSTRUCT_MBCLEN_CHARFOUND(2);
+ }
+ if (UTF16_IS_SURROGATE_FIRST(byte)) {
+ if (len < 4)
+ return ONIGENC_CONSTRUCT_MBCLEN_NEEDMORE(4-len);
+ if (UTF16_IS_SURROGATE_SECOND(p[3]))
+ return ONIGENC_CONSTRUCT_MBCLEN_CHARFOUND(4);
+ }
+ return ONIGENC_CONSTRUCT_MBCLEN_INVALID();
+}
+
+static int
+utf16le_is_mbc_newline(const UChar* p, const UChar* end,
+ OnigEncoding enc ARG_UNUSED)
+{
+ if (p + 1 < end) {
+ if (*p == 0x0a && *(p+1) == 0x00)
+ return 1;
+#ifdef USE_UNICODE_ALL_LINE_TERMINATORS
+ if ((*p == 0x0b || *p == 0x0c || *p == 0x0d || *p == 0x85)
+ && *(p+1) == 0x00)
+ return 1;
+ if (*(p+1) == 0x20 && (*p == 0x29 || *p == 0x28))
+ return 1;
+#endif
+ }
+ return 0;
+}
+
+static OnigCodePoint
+utf16le_mbc_to_code(const UChar* p, const UChar* end ARG_UNUSED,
+ OnigEncoding enc ARG_UNUSED)
+{
+ OnigCodePoint code;
+ UChar c0 = *p;
+ UChar c1 = *(p+1);
+
+ if (UTF16_IS_SURROGATE_FIRST(c1)) {
+ code = ((((c1 << 8) + c0) & 0x03ff) << 10)
+ + (((p[3] << 8) + p[2]) & 0x03ff) + 0x10000;
+ }
+ else {
+ code = c1 * 256 + p[0];
+ }
+ return code;
+}
+
+static int
+utf16le_code_to_mbclen(OnigCodePoint code,
+ OnigEncoding enc ARG_UNUSED)
+{
+ return (code > 0xffff ? 4 : 2);
+}
+
+static int
+utf16le_code_to_mbc(OnigCodePoint code, UChar *buf,
+ OnigEncoding enc ARG_UNUSED)
+{
+ UChar* p = buf;
+
+ if (code > 0xffff) {
+ unsigned int high = (code >> 10) + 0xD7C0;
+ unsigned int low = (code & 0x3FF) + 0xDC00;
+ *p++ = high & 0xFF;
+ *p++ = (high >> 8) & 0xFF;
+ *p++ = low & 0xFF;
+ *p++ = (low >> 8) & 0xFF;
+ return 4;
+ }
+ else {
+ *p++ = (UChar )(code & 0xff);
+ *p++ = (UChar )((code & 0xff00) >> 8);
+ return 2;
+ }
+}
+
+static int
+utf16le_mbc_case_fold(OnigCaseFoldType flag,
+ const UChar** pp, const UChar* end, UChar* fold,
+ OnigEncoding enc)
+{
+ const UChar* p = *pp;
+
+ if (ONIGENC_IS_ASCII_CODE(*p) && *(p+1) == 0) {
+#ifdef USE_UNICODE_CASE_FOLD_TURKISH_AZERI
+ if ((flag & ONIGENC_CASE_FOLD_TURKISH_AZERI) != 0) {
+ if (*p == 0x49) {
+ *fold++ = 0x31;
+ *fold = 0x01;
+ (*pp) += 2;
+ return 2;
+ }
+ }
+#endif
+
+ *fold++ = ONIGENC_ASCII_CODE_TO_LOWER_CASE(*p);
+ *fold = 0;
+ *pp += 2;
+ return 2;
+ }
+ else
+ return onigenc_unicode_mbc_case_fold(enc, flag, pp,
+ end, fold);
+}
+
+#if 0
+static int
+utf16le_is_mbc_ambiguous(OnigCaseFoldType flag, const UChar** pp,
+ const UChar* end)
+{
+ const UChar* p = *pp;
+
+ (*pp) += EncLen_UTF16[*(p+1)];
+
+ if (*(p+1) == 0) {
+ int c, v;
+
+ if (*p == 0xdf && (flag & INTERNAL_ONIGENC_CASE_FOLD_MULTI_CHAR) != 0) {
+ return TRUE;
+ }
+
+ c = *p;
+ v = ONIGENC_IS_UNICODE_ISO_8859_1_BIT_CTYPE(c,
+ (BIT_CTYPE_UPPER | BIT_CTYPE_LOWER));
+ if ((v | BIT_CTYPE_LOWER) != 0) {
+ /* 0xaa, 0xb5, 0xba are lower case letter, but can't convert. */
+ if (c >= 0xaa && c <= 0xba)
+ return FALSE;
+ else
+ return TRUE;
+ }
+ return (v != 0 ? TRUE : FALSE);
+ }
+
+ return FALSE;
+}
+#endif
+
+static UChar*
+utf16le_left_adjust_char_head(const UChar* start, const UChar* s, const UChar* end,
+ OnigEncoding enc ARG_UNUSED)
+{
+ if (s <= start) return (UChar* )s;
+
+ if ((s - start) % 2 == 1) {
+ s--;
+ }
+
+ if (UTF16_IS_SURROGATE_SECOND(*(s+1)) && s > start + 1)
+ s -= 2;
+
+ return (UChar* )s;
+}
+
+static int
+utf16le_get_case_fold_codes_by_str(OnigCaseFoldType flag,
+ const OnigUChar* p, const OnigUChar* end,
+ OnigCaseFoldCodeItem items[],
+ OnigEncoding enc)
+{
+ return onigenc_unicode_get_case_fold_codes_by_str(enc,
+ flag, p, end, items);
+}
+
+OnigEncodingDefine(utf_16le, UTF_16LE) = {
+ utf16le_mbc_enc_len,
+ "UTF-16LE", /* name */
+ 4, /* max byte length */
+ 2, /* min byte length */
+ utf16le_is_mbc_newline,
+ utf16le_mbc_to_code,
+ utf16le_code_to_mbclen,
+ utf16le_code_to_mbc,
+ utf16le_mbc_case_fold,
+ onigenc_unicode_apply_all_case_fold,
+ utf16le_get_case_fold_codes_by_str,
+ onigenc_unicode_property_name_to_ctype,
+ onigenc_unicode_is_code_ctype,
+ onigenc_utf16_32_get_ctype_code_range,
+ utf16le_left_adjust_char_head,
+ onigenc_always_false_is_allowed_reverse_match,
+ 0,
+ ONIGENC_FLAG_UNICODE,
+};
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-05 11:04:45 +0000