Donny9 commented on code in PR #8802: URL: https://github.com/apache/nuttx/pull/8802#discussion_r1136563771
########## libs/libc/locale/lib_iconv.c: ########## @@ -0,0 +1,1423 @@ +/**************************************************************************** + * libs/libc/locale/lib_iconv.c + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. The + * ASF licenses this file to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance with the + * License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT + * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the + * License for the specific language governing permissions and limitations + * under the License. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <iconv.h> +#include <errno.h> +#include <wchar.h> +#include <string.h> +#include <stdlib.h> +#include <limits.h> +#include <stdint.h> +#include <locale.h> + +/**************************************************************************** + * Pre-processor Definitions + ****************************************************************************/ + +#define UTF_32BE 0300 +#define UTF_16LE 0301 +#define UTF_16BE 0302 +#define UTF_32LE 0303 +#define UCS2BE 0304 +#define UCS2LE 0305 +#define WCHAR_T 0306 +#define US_ASCII 0307 +#define UTF_8 0310 +#define UTF_16 0312 +#define UTF_32 0313 +#define UCS2 0314 +#define EUC_JP 0320 +#define SHIFT_JIS 0321 +#define ISO2022_JP 0322 +#define GB18030 0330 +#define GBK 0331 +#define GB2312 0332 +#define BIG5 0340 +#define EUC_KR 0350 + +/**************************************************************************** + * Private Types + ****************************************************************************/ + +struct stateful_cd +{ + iconv_t base_cd; + unsigned state; +}; + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/* Definitions of g_charmaps. Each charmap consists of: + * 1. Empty-string-terminated list of null-terminated aliases. + * 2. Special type code or number of elided quads of entries. + * 3. Character table (size determined by field 2), consisting + * of 5 bytes for every 4 characters, interpreted as 10-bit + * indices into the g_legacy_chars table. + */ + +static const unsigned char g_charmaps[] = +{ + "utf8\0char\0\0\310" + "wchart\0\0\306" + "ucs2be\0\0\304" + "ucs2le\0\0\305" + "utf16be\0\0\302" + "utf16le\0\0\301" + "ucs4be\0utf32be\0\0\300" + "ucs4le\0utf32le\0\0\303" + "ascii\0usascii\0iso646\0iso646us\0\0\307" + "utf16\0\0\312" + "ucs4\0utf32\0\0\313" + "ucs2\0\0\314" +#ifdef CONFIG_LIBC_LOCALE_JAPANESE + "eucjp\0\0\320" + "shiftjis\0sjis\0\0\321" + "iso2022jp\0\0\322" +#endif +#ifdef CONFIG_LIBC_LOCALE_CHINESE + "gb18030\0\0\330" + "gbk\0\0\331" + "gb2312\0\0\332" + "big5\0bigfive\0cp950\0big5hkscs\0\0\340" +#endif +#ifdef CONFIG_LIBC_LOCALE_KOREAN + "euckr\0ksc5601\0ksx1001\0cp949\0\0\350" +#endif +#ifdef CONFIG_LIBC_LOCALE_CODEPAGES + #include "codepages.h" +#endif +}; + +/* Table of characters that appear in legacy 8-bit codepages, + * limited to 1024 slots (10 bit indices). The first 256 entries + * are elided since those characters are obviously all included. + */ + +static const unsigned short g_legacy_chars[] = +{ + #include "legacychars.h" +}; + +#ifdef CONFIG_LIBC_LOCALE_JAPANESE +static const unsigned short g_jis0208[84][94] = +{ + #include "jis0208.h" +}; + +static const unsigned short g_rev_jis[] = +{ + #include "revjis.h" +}; +#endif + +#ifdef CONFIG_LIBC_LOCALE_CHINESE +static const unsigned short g_gb18030[126][190] = +{ + #include "gb18030.h" +}; + +static const unsigned short g_big5[89][157] = +{ + #include "big5.h" +}; + +static const unsigned short g_hkscs[] = +{ + #include "hkscs.h" +}; +#endif + +#ifdef CONFIG_LIBC_LOCALE_KOREAN +static const unsigned short g_ksc[93][94] = +{ + #include "ksc.h" +}; +#endif + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +static int fuzzycmp(FAR const unsigned char *a, FAR const unsigned char *b) +{ + for (; *a && *b; a++, b++) + { + while (*a && (*a | 32U) - 'a' > 26 && *a - '0' > 10U) + a++; + + if ((*a | 32U) != *b) + { + return 1; + } + } + + return *a != *b; +} + +static size_t find_charmap(FAR const void *name) +{ + FAR const unsigned char *s; + + if (*(FAR char *)name == 0) + { + /* "utf8" */ + + name = g_charmaps; + } + + for (s = g_charmaps; *s; ) Review Comment: Done! -- This is an automated message from the Apache Git Service. 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