1466 lines
34 KiB
C
1466 lines
34 KiB
C
/****************************************************************************
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* libs/libc/locale/lib_iconv.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <iconv.h>
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#include <errno.h>
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#include <wchar.h>
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#include <string.h>
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#include <stdlib.h>
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#include <limits.h>
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#include <stdint.h>
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#include <locale.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#define UTF_32BE 0300
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#define UTF_16LE 0301
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#define UTF_16BE 0302
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#define UTF_32LE 0303
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#define UCS2BE 0304
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#define UCS2LE 0305
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#define WCHAR_T 0306
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#define US_ASCII 0307
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#define UTF_8 0310
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#define UTF_16 0312
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#define UTF_32 0313
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#define UCS2 0314
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#define EUC_JP 0320
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#define SHIFT_JIS 0321
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#define ISO2022_JP 0322
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#define GB18030 0330
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#define GBK 0331
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#define GB2312 0332
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#define BIG5 0340
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#define EUC_KR 0350
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/****************************************************************************
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* Private Types
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****************************************************************************/
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struct stateful_cd
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{
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iconv_t base_cd;
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unsigned state;
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};
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/* Definitions of g_charmaps. Each charmap consists of:
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* 1. Empty-string-terminated list of null-terminated aliases.
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* 2. Special type code or number of elided quads of entries.
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* 3. Character table (size determined by field 2), consisting
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* of 5 bytes for every 4 characters, interpreted as 10-bit
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* indices into the g_legacy_chars table.
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*/
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static const unsigned char g_charmaps[] =
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{
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"utf8\0char\0\0\310"
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"wchart\0\0\306"
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"ucs2be\0\0\304"
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"ucs2le\0\0\305"
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"utf16be\0\0\302"
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"utf16le\0\0\301"
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"ucs4be\0utf32be\0\0\300"
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"ucs4le\0utf32le\0\0\303"
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"ascii\0usascii\0iso646\0iso646us\0\0\307"
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"utf16\0\0\312"
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"ucs4\0utf32\0\0\313"
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"ucs2\0\0\314"
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#ifdef CONFIG_LIBC_LOCALE_JAPANESE
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"eucjp\0\0\320"
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"shiftjis\0sjis\0\0\321"
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"iso2022jp\0\0\322"
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#endif
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#ifdef CONFIG_LIBC_LOCALE_CHINESE
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"gb18030\0\0\330"
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"gbk\0\0\331"
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"gb2312\0\0\332"
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"big5\0bigfive\0cp950\0big5hkscs\0\0\340"
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#endif
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#ifdef CONFIG_LIBC_LOCALE_KOREAN
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"euckr\0ksc5601\0ksx1001\0cp949\0\0\350"
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#endif
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#ifdef CONFIG_LIBC_LOCALE_CODEPAGES
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# include "codepages.h"
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#endif
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};
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/* Table of characters that appear in legacy 8-bit codepages,
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* limited to 1024 slots (10 bit indices). The first 256 entries
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* are elided since those characters are obviously all included.
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*/
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static const unsigned short g_legacy_chars[] =
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{
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#include "legacychars.h"
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};
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#ifdef CONFIG_LIBC_LOCALE_JAPANESE
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static const unsigned short g_jis0208[84][94] =
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{
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#include "jis0208.h"
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};
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static const unsigned short g_rev_jis[] =
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{
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#include "revjis.h"
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};
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#endif
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#ifdef CONFIG_LIBC_LOCALE_CHINESE
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static const unsigned short g_gb18030[126][190] =
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{
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#include "gb18030.h"
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};
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static const unsigned short g_big5[89][157] =
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{
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#include "big5.h"
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};
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static const unsigned short g_hkscs[] =
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{
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#include "hkscs.h"
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};
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#endif
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#ifdef CONFIG_LIBC_LOCALE_KOREAN
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static const unsigned short g_ksc[93][94] =
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{
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#include "ksc.h"
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};
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#endif
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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static int fuzzycmp(FAR const unsigned char *a, FAR const unsigned char *b)
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{
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for (; *a && *b; a++, b++)
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{
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while (*a && (*a | 32U) - 'a' > 26 && *a - '0' > 10U)
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a++;
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if ((*a | 32U) != *b)
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{
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return 1;
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}
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}
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return *a != *b;
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}
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static size_t find_charmap(FAR const void *name)
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{
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FAR const unsigned char *s;
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if (*(FAR char *)name == '\0')
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{
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/* "utf8" */
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name = g_charmaps;
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}
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for (s = g_charmaps; *s != '\0'; )
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{
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if (!fuzzycmp(name, s))
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{
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for (; *s; s += strlen((FAR const char *)s) + 1);
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return s + 1 - g_charmaps;
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}
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s += strlen((FAR const char *)s) + 1;
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if (*s == '\0')
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{
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if (s[1] > 0200)
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{
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s += 2;
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}
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else
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{
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s += 2 + (64U - s[1]) * 5;
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}
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}
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}
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return -1;
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}
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static iconv_t combine_to_from(size_t t, size_t f)
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{
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return (iconv_t)(f << 16 | t << 1 | 1);
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}
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static size_t extract_from(iconv_t cd)
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{
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return (size_t)cd >> 16;
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}
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static size_t extract_to(iconv_t cd)
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{
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return (size_t)cd >> 1 & 0x7fff;
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}
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static unsigned get_16(FAR const unsigned char *s, int e)
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{
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e &= 1;
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return s[e] << 8 | s[1 - e];
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}
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static void put_16(FAR unsigned char *s, unsigned c, int e)
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{
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e &= 1;
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s[e] = c >> 8;
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s[1 - e] = c;
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}
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static unsigned get_32(FAR const unsigned char *s, int e)
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{
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e &= 3;
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return (s[e] + 0U) << 24 | s[e ^ 1] << 16 | s[e ^ 2] << 8 | s[e ^ 3];
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}
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static void put_32(FAR unsigned char *s, unsigned c, int e)
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{
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e &= 3;
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s[e ^ 0] = c >> 24;
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s[e ^ 1] = c >> 16;
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s[e ^ 2] = c >> 8;
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s[e ^ 3] = c;
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}
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static unsigned legacy_map(const unsigned char *map, unsigned c)
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{
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unsigned x;
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if (c < 4 * map[0 - 1])
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{
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return c;
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}
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x = c - 4 * map[0 - 1];
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x = (map[x * 5 / 4] >> (2 * x % 8)) |
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((map[x * 5 / 4 + 1] << (8 - 2 * x % 8)) & 1023);
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return x < 256 ? x : g_legacy_chars[x - 256];
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}
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#ifdef CONFIG_LIBC_LOCALE_JAPANESE
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static unsigned uni_to_jis(unsigned c)
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{
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unsigned nitems = sizeof(g_rev_jis) / sizeof(*g_rev_jis);
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unsigned d;
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unsigned j;
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unsigned i;
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unsigned b;
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for (; ; )
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{
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i = nitems / 2;
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j = g_rev_jis[b + i];
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d = g_jis0208[j / 256][j % 256];
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if (d == c)
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{
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return j + 0x2121;
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}
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else if (nitems == 1)
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{
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return 0;
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}
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else if (c < d)
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{
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nitems /= 2;
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}
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else
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{
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b += i;
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nitems -= nitems / 2;
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}
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}
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}
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#endif
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/****************************************************************************
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* Public Functions
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****************************************************************************/
|
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/****************************************************************************
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* Name: iconv_open
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*
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* Description:
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* Allocates a conversion descriptor suitable for converting byte
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* sequences from character encoding "from" to character encoding "to".
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*
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* Input Parameters:
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* to - A pointer to character encoding of "to".
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* from - A pointer to character encoding of "from".
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*
|
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* Returned Value:
|
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* Returns a freshly allocated conversion descriptor.
|
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* In case of error, it sets errno and returns (iconv_t) -1.
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*
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****************************************************************************/
|
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iconv_t iconv_open(FAR const char *to, FAR const char *from)
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{
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FAR struct stateful_cd *scd;
|
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iconv_t cd;
|
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size_t f;
|
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size_t t;
|
|
|
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if ((t = find_charmap(to)) == -1 || (f = find_charmap(from)) == -1 ||
|
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(g_charmaps[t] >= 0330))
|
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{
|
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set_errno(EINVAL);
|
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return (iconv_t)-1;
|
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}
|
|
|
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cd = combine_to_from(t, f);
|
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switch (g_charmaps[f])
|
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{
|
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case UTF_16:
|
|
case UTF_32:
|
|
case UCS2:
|
|
#ifdef CONFIG_LIBC_LOCALE_JAPANESE
|
|
case ISO2022_JP:
|
|
#endif
|
|
{
|
|
scd = lib_malloc(sizeof(*scd));
|
|
if (scd == NULL)
|
|
{
|
|
set_errno(ENOMEM);
|
|
return (iconv_t)-1;
|
|
}
|
|
|
|
scd->base_cd = cd;
|
|
scd->state = 0;
|
|
cd = (iconv_t)scd;
|
|
}
|
|
}
|
|
|
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return cd;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: iconv
|
|
*
|
|
* Description:
|
|
* Converts a sequence of characters in one character encoding to a
|
|
* sequence of characters in another character encoding.
|
|
*
|
|
* Input Parameters:
|
|
* cd - A conversion descriptor, previously created by a call
|
|
* to iconv_open.
|
|
* in - The address of a variable that points to the first character of
|
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* the input sequence.
|
|
* inb - The number of bytes in input buffer.
|
|
* out - The address of a variable that points to the first byte
|
|
* available in the output buffer.
|
|
* outb - The number of bytes available in the output buffer.
|
|
*
|
|
* Returned Value:
|
|
* Returns the number of characters converted in a nonreversible way
|
|
* during this call; reversible conversions are not counted, In case of
|
|
* error, it sets errno and return (size_t) -1.
|
|
*
|
|
****************************************************************************/
|
|
|
|
size_t iconv(iconv_t cd, FAR char **in, FAR size_t *inb,
|
|
FAR char **out, FAR size_t *outb)
|
|
{
|
|
FAR struct stateful_cd *scd;
|
|
FAR const unsigned char *tomap;
|
|
FAR const unsigned char *map;
|
|
unsigned char totype;
|
|
unsigned char type;
|
|
unsigned from;
|
|
mbstate_t st;
|
|
unsigned to;
|
|
unsigned c;
|
|
unsigned d;
|
|
wchar_t wc;
|
|
size_t k;
|
|
size_t l;
|
|
size_t x;
|
|
int err;
|
|
|
|
x = 0;
|
|
scd = NULL;
|
|
if (((size_t)cd & 1) == 0)
|
|
{
|
|
scd = (FAR void *)cd;
|
|
cd = scd->base_cd;
|
|
}
|
|
|
|
to = extract_to(cd);
|
|
from = extract_from(cd);
|
|
if (to > sizeof(g_charmaps) - 1)
|
|
{
|
|
/* Avoid going outside the range of the array */
|
|
|
|
to = sizeof(g_charmaps) - 1;
|
|
}
|
|
|
|
if (from > sizeof(g_charmaps) - 1)
|
|
{
|
|
/* Avoid going outside the range of the array */
|
|
|
|
from = sizeof(g_charmaps) - 1;
|
|
}
|
|
|
|
map = g_charmaps + from + 1;
|
|
tomap = g_charmaps + to + 1;
|
|
type = map[0 - 1];
|
|
totype = tomap[0 - 1];
|
|
|
|
if (in == NULL || *in == NULL || *inb == 0)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
for (; *inb; *in += l, *inb -= l)
|
|
{
|
|
c = *(FAR unsigned char *)*in;
|
|
l = 1;
|
|
|
|
switch (type)
|
|
{
|
|
case UTF_8:
|
|
{
|
|
if (c < 128)
|
|
{
|
|
break;
|
|
}
|
|
|
|
memset(&st, 0, sizeof(st));
|
|
l = mbrtowc(&wc, *in, *inb, &st);
|
|
if (l == (size_t)-1)
|
|
{
|
|
goto ilseq;
|
|
}
|
|
|
|
if (l == (size_t)-2)
|
|
{
|
|
goto starved;
|
|
}
|
|
|
|
c = wc;
|
|
}
|
|
break;
|
|
|
|
case US_ASCII:
|
|
{
|
|
if (c >= 128)
|
|
{
|
|
goto ilseq;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case WCHAR_T:
|
|
{
|
|
l = sizeof(wchar_t);
|
|
if (*inb < l)
|
|
{
|
|
goto starved;
|
|
}
|
|
|
|
c = *(FAR wchar_t *)*in;
|
|
if (c - 0xd800u < 0x800u || c >= 0x110000u)
|
|
{
|
|
goto ilseq;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case UCS2BE:
|
|
case UCS2LE:
|
|
case UTF_16BE:
|
|
case UTF_16LE:
|
|
{
|
|
l = 2;
|
|
if (*inb < 2)
|
|
{
|
|
goto starved;
|
|
}
|
|
|
|
c = get_16((FAR void *)*in, type);
|
|
if ((unsigned)(c - 0xdc00) < 0x400)
|
|
{
|
|
goto ilseq;
|
|
}
|
|
|
|
if ((unsigned)(c - 0xd800) < 0x400)
|
|
{
|
|
if (type - UCS2BE < 2U)
|
|
{
|
|
goto ilseq;
|
|
}
|
|
|
|
l = 4;
|
|
if (*inb < 4)
|
|
{
|
|
goto starved;
|
|
}
|
|
|
|
d = get_16((FAR void *)(*in + 2), type);
|
|
if ((unsigned)(d - 0xdc00) >= 0x400)
|
|
{
|
|
goto ilseq;
|
|
}
|
|
|
|
c = ((c - 0xd7c0) << 10) + (d - 0xdc00);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case UCS2:
|
|
case UTF_16:
|
|
{
|
|
if (scd == NULL)
|
|
{
|
|
goto starved;
|
|
}
|
|
|
|
l = 0;
|
|
if (!scd->state)
|
|
{
|
|
if (*inb < 2)
|
|
goto starved;
|
|
|
|
c = get_16((FAR void *)*in, 0);
|
|
scd->state = (type == UCS2
|
|
? c == 0xfffe ? UCS2LE : UCS2BE
|
|
: c == 0xfffe ? UTF_16LE : UTF_16BE);
|
|
if (c == 0xfffe || c == 0xfeff)
|
|
{
|
|
l = 2;
|
|
}
|
|
}
|
|
|
|
type = scd->state;
|
|
continue;
|
|
}
|
|
|
|
case UTF_32:
|
|
{
|
|
if (scd == NULL)
|
|
{
|
|
goto starved;
|
|
}
|
|
|
|
l = 0;
|
|
if (!scd->state)
|
|
{
|
|
if (*inb < 4)
|
|
{
|
|
goto starved;
|
|
}
|
|
|
|
c = get_32((FAR void *)*in, 0);
|
|
scd->state = (c == 0xfffe0000 ? UTF_32LE : UTF_32BE);
|
|
if (c == 0xfffe0000 || c == 0xfeff)
|
|
{
|
|
l = 4;
|
|
}
|
|
}
|
|
|
|
type = scd->state;
|
|
continue;
|
|
}
|
|
|
|
#ifdef CONFIG_LIBC_LOCALE_JAPANESE
|
|
case SHIFT_JIS:
|
|
{
|
|
if (c < 128)
|
|
{
|
|
break;
|
|
}
|
|
|
|
if (c - 0xa1 <= 0xdf - 0xa1)
|
|
{
|
|
c += 0xff61 - 0xa1;
|
|
break;
|
|
}
|
|
|
|
l = 2;
|
|
if (*inb < 2)
|
|
{
|
|
goto starved;
|
|
}
|
|
|
|
d = *((FAR unsigned char *)*in + 1);
|
|
if (c - 129 <= 159 - 129)
|
|
{
|
|
c -= 129;
|
|
}
|
|
else if (c - 224 <= 239 - 224)
|
|
{
|
|
c -= 193;
|
|
}
|
|
else
|
|
{
|
|
goto ilseq;
|
|
}
|
|
|
|
c *= 2;
|
|
if (d - 64 <= 158 - 64)
|
|
{
|
|
if (d == 127)
|
|
{
|
|
goto ilseq;
|
|
}
|
|
|
|
if (d > 127)
|
|
{
|
|
d--;
|
|
}
|
|
|
|
d -= 64;
|
|
}
|
|
else if (d - 159 <= 252 - 159)
|
|
{
|
|
c++;
|
|
d -= 159;
|
|
}
|
|
|
|
c = g_jis0208[c][d];
|
|
if (!c)
|
|
{
|
|
goto ilseq;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case EUC_JP:
|
|
{
|
|
if (c < 128)
|
|
{
|
|
break;
|
|
}
|
|
|
|
l = 2;
|
|
if (*inb < 2)
|
|
{
|
|
goto starved;
|
|
}
|
|
|
|
d = *((FAR unsigned char *)*in + 1);
|
|
if (c == 0x8e)
|
|
{
|
|
c = d;
|
|
if (c - 0xa1 > 0xdf - 0xa1)
|
|
{
|
|
goto ilseq;
|
|
}
|
|
|
|
c += 0xff61 - 0xa1;
|
|
break;
|
|
}
|
|
|
|
c -= 0xa1;
|
|
d -= 0xa1;
|
|
if (c >= 84 || d >= 94)
|
|
{
|
|
goto ilseq;
|
|
}
|
|
|
|
c = g_jis0208[c][d];
|
|
if (!c)
|
|
{
|
|
goto ilseq;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case ISO2022_JP:
|
|
{
|
|
if (c >= 128)
|
|
{
|
|
goto ilseq;
|
|
}
|
|
|
|
if (c == '\033')
|
|
{
|
|
l = 3;
|
|
if (*inb < 3)
|
|
{
|
|
goto starved;
|
|
}
|
|
|
|
c = *((FAR unsigned char *)*in + 1);
|
|
d = *((FAR unsigned char *)*in + 2);
|
|
if (c != '(' && c != '$')
|
|
{
|
|
goto ilseq;
|
|
}
|
|
|
|
switch (128 * (c == '$') + d)
|
|
{
|
|
if (scd == NULL)
|
|
{
|
|
goto starved;
|
|
}
|
|
|
|
case 'B':
|
|
{
|
|
scd->state = 0;
|
|
continue;
|
|
}
|
|
|
|
case 'J':
|
|
{
|
|
scd->state = 1;
|
|
continue;
|
|
}
|
|
|
|
case 'I':
|
|
{
|
|
scd->state = 4;
|
|
continue;
|
|
}
|
|
|
|
case 128 + '@':
|
|
{
|
|
scd->state = 2;
|
|
continue;
|
|
}
|
|
|
|
case 128 + 'B':
|
|
{
|
|
scd->state = 3;
|
|
continue;
|
|
}
|
|
}
|
|
|
|
goto ilseq;
|
|
}
|
|
|
|
if (scd == NULL)
|
|
{
|
|
goto starved;
|
|
}
|
|
|
|
switch (scd->state)
|
|
{
|
|
case 1:
|
|
{
|
|
if (c == '\\')
|
|
{
|
|
c = 0xa5;
|
|
}
|
|
|
|
if (c == '~')
|
|
{
|
|
c = 0x203e;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case 2:
|
|
case 3:
|
|
{
|
|
l = 2;
|
|
if (*inb < 2)
|
|
{
|
|
goto starved;
|
|
}
|
|
|
|
d = *((FAR unsigned char *)*in + 1);
|
|
c -= 0x21;
|
|
d -= 0x21;
|
|
if (c >= 84 || d >= 94)
|
|
{
|
|
goto ilseq;
|
|
}
|
|
|
|
c = g_jis0208[c][d];
|
|
if (!c)
|
|
{
|
|
goto ilseq;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case 4:
|
|
{
|
|
if (c - 0x60 < 0x1f)
|
|
{
|
|
goto ilseq;
|
|
}
|
|
|
|
if (c - 0x21 < 0x5e)
|
|
{
|
|
c += 0xff61 - 0x21;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
#endif
|
|
|
|
#ifdef CONFIG_LIBC_LOCALE_CHINESE
|
|
case GB2312:
|
|
{
|
|
if (c < 128)
|
|
{
|
|
break;
|
|
}
|
|
|
|
if (c < 0xa1)
|
|
{
|
|
goto ilseq;
|
|
}
|
|
}
|
|
|
|
case GBK:
|
|
case GB18030:
|
|
{
|
|
if (c < 128)
|
|
{
|
|
break;
|
|
}
|
|
|
|
c -= 0x81;
|
|
if (c >= 126)
|
|
{
|
|
goto ilseq;
|
|
}
|
|
|
|
l = 2;
|
|
if (*inb < 2)
|
|
{
|
|
goto starved;
|
|
}
|
|
|
|
d = *((unsigned char *)*in + 1);
|
|
if (d < 0xa1 && type == GB2312)
|
|
{
|
|
goto ilseq;
|
|
}
|
|
|
|
if (d - 0x40 >= 191 || d == 127)
|
|
{
|
|
if (d - '0' > 9 || type != GB18030)
|
|
{
|
|
goto ilseq;
|
|
}
|
|
|
|
l = 4;
|
|
if (*inb < 4)
|
|
{
|
|
goto starved;
|
|
}
|
|
|
|
c = (10 * c + d - '0') * 1260;
|
|
d = *((FAR unsigned char *)*in + 2);
|
|
if (d - 0x81 > 126)
|
|
{
|
|
goto ilseq;
|
|
}
|
|
|
|
c += 10 * (d - 0x81);
|
|
d = *((FAR unsigned char *)*in + 3);
|
|
if (d - '0' > 9)
|
|
{
|
|
goto ilseq;
|
|
}
|
|
|
|
c += d - '0';
|
|
c += 128;
|
|
for (d = 0; d <= c; )
|
|
{
|
|
int i;
|
|
|
|
k = 0;
|
|
for (i = 0; i < 126; i++)
|
|
{
|
|
int j;
|
|
|
|
for (j = 0; j < 190; j++)
|
|
{
|
|
if (g_gb18030[i][j] - d <= c - d)
|
|
{
|
|
k++;
|
|
}
|
|
}
|
|
}
|
|
|
|
d = c + 1;
|
|
c += k;
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
d -= 0x40;
|
|
if (d > 63)
|
|
{
|
|
d--;
|
|
}
|
|
|
|
c = g_gb18030[c][d];
|
|
}
|
|
break;
|
|
|
|
case BIG5:
|
|
{
|
|
if (c < 128)
|
|
{
|
|
break;
|
|
}
|
|
|
|
l = 2;
|
|
if (*inb < 2)
|
|
{
|
|
goto starved;
|
|
}
|
|
|
|
d = *((FAR unsigned char *)*in + 1);
|
|
if (d - 0x40 >= 0xff - 0x40 || d - 0x7f < 0xa1 - 0x7f)
|
|
{
|
|
goto ilseq;
|
|
}
|
|
|
|
d -= 0x40;
|
|
if (d > 0x3e)
|
|
{
|
|
d -= 0x22;
|
|
}
|
|
|
|
if (c - 0xa1 >= 0xfa - 0xa1)
|
|
{
|
|
if (c - 0x87 >= 0xff - 0x87)
|
|
{
|
|
goto ilseq;
|
|
}
|
|
|
|
if (c < 0xa1)
|
|
{
|
|
c -= 0x87;
|
|
}
|
|
else
|
|
{
|
|
c -= 0x87 + (0xfa - 0xa1);
|
|
}
|
|
|
|
c = (g_hkscs[4867 + (c * 157 + d) / 16] >>
|
|
(c * 157 + d) % 16) % 2 << 17 | g_hkscs[c * 157 + d];
|
|
|
|
/* A few HKSCS characters map to pairs of UCS
|
|
* characters. These are mapped to surrogate
|
|
* range in the hkscs table then hard-coded
|
|
* here. Ugly, yes.
|
|
*/
|
|
|
|
if (c / 256 == 0xdc)
|
|
{
|
|
FAR char *ptmp;
|
|
size_t out_len;
|
|
size_t in_len;
|
|
size_t tmplen;
|
|
size_t tmpx;
|
|
union
|
|
{
|
|
char c[8];
|
|
wchar_t wc[2];
|
|
} tmp;
|
|
|
|
char *in_buf =
|
|
{
|
|
"\303\212\314\204"
|
|
"\303\212\314\214"
|
|
"\303\252\314\204"
|
|
"\303\252\314\214"
|
|
+ c % 256
|
|
};
|
|
|
|
in_len = 4;
|
|
ptmp = tmp.c;
|
|
out_len = sizeof(tmp);
|
|
tmpx = iconv(combine_to_from(to, find_charmap("utf8")),
|
|
&in_buf, &in_len, &ptmp, &out_len);
|
|
tmplen = ptmp - tmp.c;
|
|
if (tmplen > *outb)
|
|
{
|
|
goto toobig;
|
|
}
|
|
|
|
if (tmpx)
|
|
{
|
|
x++;
|
|
}
|
|
|
|
memcpy(*out, &tmp, tmplen);
|
|
*out += tmplen;
|
|
*outb -= tmplen;
|
|
continue;
|
|
}
|
|
|
|
if (!c)
|
|
{
|
|
goto ilseq;
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
c -= 0xa1;
|
|
c = g_big5[c][d] | (c == 0x27 && (d == 0x3a ||
|
|
d == 0x3c || d == 0x42)) << 17;
|
|
if (!c)
|
|
{
|
|
goto ilseq;
|
|
}
|
|
}
|
|
break;
|
|
#endif
|
|
|
|
#ifdef CONFIG_LIBC_LOCALE_KOREAN
|
|
case EUC_KR:
|
|
{
|
|
if (c < 128)
|
|
{
|
|
break;
|
|
}
|
|
|
|
l = 2;
|
|
if (*inb < 2)
|
|
{
|
|
goto starved;
|
|
}
|
|
|
|
d = *((FAR unsigned char *)*in + 1);
|
|
c -= 0xa1;
|
|
d -= 0xa1;
|
|
if (c >= 93 || d >= 94)
|
|
{
|
|
c += (0xa1 - 0x81);
|
|
d += 0xa1;
|
|
if (c >= 93 || ((c >= 0xc6 - 0x81) && (d > 0x52)))
|
|
{
|
|
goto ilseq;
|
|
}
|
|
|
|
if (d - 'A' < 26)
|
|
{
|
|
d = d - 'A';
|
|
}
|
|
else if (d - 'a' < 26)
|
|
{
|
|
d = d - 'a' + 26;
|
|
}
|
|
else if (d - 0x81 < 0xff - 0x81)
|
|
{
|
|
d = d - 0x81 + 52;
|
|
}
|
|
else
|
|
{
|
|
goto ilseq;
|
|
}
|
|
|
|
if (c < 0x20)
|
|
{
|
|
c = 178 * c + d;
|
|
}
|
|
else
|
|
{
|
|
c = 178 * 0x20 + 84 * (c - 0x20) + d;
|
|
}
|
|
|
|
c += 0xac00;
|
|
for (d = 0xac00; d <= c; )
|
|
{
|
|
int i;
|
|
|
|
k = 0;
|
|
for (i = 0; i < 93; i++)
|
|
{
|
|
int j;
|
|
|
|
for (j = 0; j < 94; j++)
|
|
{
|
|
if (g_ksc[i][j] - d <= c - d)
|
|
{
|
|
k++;
|
|
}
|
|
}
|
|
}
|
|
|
|
d = c + 1;
|
|
c += k;
|
|
}
|
|
break;
|
|
}
|
|
|
|
c = g_ksc[c][d];
|
|
if (!c)
|
|
{
|
|
goto ilseq;
|
|
}
|
|
}
|
|
break;
|
|
#endif
|
|
|
|
default:
|
|
{
|
|
if (!c)
|
|
{
|
|
break;
|
|
}
|
|
|
|
c = legacy_map(map, c);
|
|
if (!c)
|
|
{
|
|
goto ilseq;
|
|
}
|
|
}
|
|
}
|
|
|
|
switch (totype)
|
|
{
|
|
case WCHAR_T:
|
|
{
|
|
if (*outb < sizeof(wchar_t))
|
|
{
|
|
goto toobig;
|
|
}
|
|
|
|
*(FAR wchar_t *)*out = c;
|
|
*out += sizeof(wchar_t);
|
|
*outb -= sizeof(wchar_t);
|
|
}
|
|
break;
|
|
|
|
case UTF_8:
|
|
{
|
|
if (*outb < 4)
|
|
{
|
|
char tmp[4];
|
|
k = wctomb(tmp, c);
|
|
if (*outb < k)
|
|
{
|
|
goto toobig;
|
|
}
|
|
|
|
memcpy(*out, tmp, k);
|
|
}
|
|
else
|
|
{
|
|
k = wctomb(*out, c);
|
|
}
|
|
|
|
*out += k;
|
|
*outb -= k;
|
|
}
|
|
break;
|
|
|
|
case US_ASCII:
|
|
if (c > 0x7f)
|
|
{
|
|
subst:
|
|
x++;
|
|
c = '*';
|
|
}
|
|
|
|
default:
|
|
{
|
|
if (*outb < 1)
|
|
{
|
|
goto toobig;
|
|
}
|
|
|
|
if (c < 256 && c == legacy_map(tomap, c))
|
|
{
|
|
revout:
|
|
if (*outb < 1)
|
|
{
|
|
goto toobig;
|
|
}
|
|
|
|
*(*out)++ = c;
|
|
*outb -= 1;
|
|
break;
|
|
}
|
|
|
|
d = c;
|
|
for (c = 4 * totype; c < 256; c++)
|
|
{
|
|
if (d == legacy_map(tomap, c))
|
|
{
|
|
goto revout;
|
|
}
|
|
}
|
|
|
|
goto subst;
|
|
}
|
|
|
|
#ifdef CONFIG_LIBC_LOCALE_JAPANESE
|
|
case SHIFT_JIS:
|
|
{
|
|
if (c < 128)
|
|
{
|
|
goto revout;
|
|
}
|
|
|
|
if (c == 0xa5)
|
|
{
|
|
x++;
|
|
c = '\\';
|
|
goto revout;
|
|
}
|
|
|
|
if (c == 0x203e)
|
|
{
|
|
x++;
|
|
c = '~';
|
|
goto revout;
|
|
}
|
|
|
|
if (c - 0xff61 <= 0xdf - 0xa1)
|
|
{
|
|
c += 0xa1 - 0xff61;
|
|
goto revout;
|
|
}
|
|
|
|
c = uni_to_jis(c);
|
|
if (!c)
|
|
{
|
|
goto subst;
|
|
}
|
|
|
|
if (*outb < 2)
|
|
{
|
|
goto toobig;
|
|
}
|
|
|
|
d = c % 256;
|
|
c = c / 256;
|
|
*(*out)++ = (c + 1) / 2 + (c < 95 ? 112 : 176);
|
|
*(*out)++ = c % 2 ? d + 31 + d / 96 : d + 126;
|
|
*outb -= 2;
|
|
break;
|
|
}
|
|
|
|
case EUC_JP:
|
|
{
|
|
if (c < 128)
|
|
{
|
|
goto revout;
|
|
}
|
|
|
|
if (c - 0xff61 <= 0xdf - 0xa1)
|
|
{
|
|
c += 0x0e00 + 0x21 - 0xff61;
|
|
}
|
|
else
|
|
{
|
|
c = uni_to_jis(c);
|
|
}
|
|
|
|
if (!c)
|
|
{
|
|
goto subst;
|
|
}
|
|
|
|
if (*outb < 2)
|
|
{
|
|
goto toobig;
|
|
}
|
|
|
|
*(*out)++ = c / 256 + 0x80;
|
|
*(*out)++ = c % 256 + 0x80;
|
|
*outb -= 2;
|
|
}
|
|
break;
|
|
|
|
case ISO2022_JP:
|
|
{
|
|
if (c < 128)
|
|
{
|
|
goto revout;
|
|
}
|
|
|
|
if (c - 0xff61 <= 0xdf - 0xa1 || c == 0xa5 || c == 0x203e)
|
|
{
|
|
if (*outb < 7)
|
|
{
|
|
goto toobig;
|
|
}
|
|
|
|
*(*out)++ = '\033';
|
|
*(*out)++ = '(';
|
|
if (c == 0xa5)
|
|
{
|
|
*(*out)++ = 'J';
|
|
*(*out)++ = '\\';
|
|
}
|
|
else if (c == 0x203e)
|
|
{
|
|
*(*out)++ = 'J';
|
|
*(*out)++ = '~';
|
|
}
|
|
else
|
|
{
|
|
*(*out)++ = 'I';
|
|
*(*out)++ = c - 0xff61 + 0x21;
|
|
}
|
|
|
|
*(*out)++ = '\033';
|
|
*(*out)++ = '(';
|
|
*(*out)++ = 'B';
|
|
*outb -= 7;
|
|
break;
|
|
}
|
|
|
|
c = uni_to_jis(c);
|
|
if (!c)
|
|
{
|
|
goto subst;
|
|
}
|
|
|
|
if (*outb < 8)
|
|
{
|
|
goto toobig;
|
|
}
|
|
|
|
*(*out)++ = '\033';
|
|
*(*out)++ = '$';
|
|
*(*out)++ = 'B';
|
|
*(*out)++ = c / 256;
|
|
*(*out)++ = c % 256;
|
|
*(*out)++ = '\033';
|
|
*(*out)++ = '(';
|
|
*(*out)++ = 'B';
|
|
*outb -= 8;
|
|
}
|
|
break;
|
|
#endif
|
|
|
|
case UCS2:
|
|
totype = UCS2BE;
|
|
case UCS2BE:
|
|
case UCS2LE:
|
|
case UTF_16:
|
|
case UTF_16BE:
|
|
case UTF_16LE:
|
|
{
|
|
if (c < 0x10000 || totype - UCS2BE < 2U)
|
|
{
|
|
if (c >= 0x10000)
|
|
{
|
|
c = 0xfffd;
|
|
}
|
|
|
|
if (*outb < 2)
|
|
{
|
|
goto toobig;
|
|
}
|
|
|
|
put_16((FAR void *)*out, c, totype);
|
|
*out += 2;
|
|
*outb -= 2;
|
|
break;
|
|
}
|
|
|
|
if (*outb < 4)
|
|
{
|
|
goto toobig;
|
|
}
|
|
|
|
c -= 0x10000;
|
|
put_16((FAR void *)*out, (c >> 10) | 0xd800, totype);
|
|
put_16((FAR void *)(*out + 2), (c & 0x3ff) | 0xdc00, totype);
|
|
*out += 4;
|
|
*outb -= 4;
|
|
}
|
|
break;
|
|
|
|
case UTF_32:
|
|
totype = UTF_32BE;
|
|
case UTF_32BE:
|
|
case UTF_32LE:
|
|
{
|
|
if (*outb < 4)
|
|
{
|
|
goto toobig;
|
|
}
|
|
|
|
put_32((FAR void *)*out, c, totype);
|
|
*out += 4;
|
|
*outb -= 4;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
return x;
|
|
|
|
ilseq:
|
|
err = EILSEQ;
|
|
x = -1;
|
|
goto end;
|
|
toobig:
|
|
err = E2BIG;
|
|
x = -1;
|
|
goto end;
|
|
starved:
|
|
err = EINVAL;
|
|
x = -1;
|
|
end:
|
|
set_errno(err);
|
|
return x;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: iconv_close
|
|
*
|
|
* Description:
|
|
* Deallocate descriptor for character set conversion.
|
|
*
|
|
* Input Parameters:
|
|
* cd - A allocated conversion descriptor.
|
|
*
|
|
* Returned Value:
|
|
* When successful, the iconv_close() function returns 0. In case of
|
|
* error, it sets errno and returns -1.
|
|
*
|
|
****************************************************************************/
|
|
|
|
int iconv_close(iconv_t cd)
|
|
{
|
|
if (((size_t)cd & 1) == 0)
|
|
{
|
|
lib_free((FAR void *)cd);
|
|
}
|
|
|
|
return 0;
|
|
}
|