forked from visionmedia/node-jscoverage
/
encoding.c
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encoding.c
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/*
encoding.c - character encoding
Copyright (C) 2008 siliconforks.com
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <config.h>
#include "encoding.h"
#include <assert.h>
#include <limits.h>
#include <string.h>
#ifdef HAVE_ICONV_H
#include <iconv.h>
#elif defined HAVE_WINDOWS_H
#include <windows.h>
#endif
#include "util.h"
static void skip_bom(jschar ** characters, size_t * num_characters) {
jschar * c = *characters;
size_t nc = *num_characters;
size_t i;
for (i = 0; i < nc; i++) {
if (c[i] != 0xfeff) {
break;
}
}
if (i == 0) {
return;
}
nc -= i;
jschar * old = c;
c = xnew(jschar, nc);
memcpy(c, old + i, nc * sizeof(jschar));
free(old);
*characters = c;
*num_characters = nc;
}
#ifdef HAVE_ICONV
#ifdef WORDS_BIGENDIAN
#define UTF_16_INTERNAL "UTF-16BE"
#else
#define UTF_16_INTERNAL "UTF-16LE"
#endif
int jscoverage_bytes_to_characters(const char * encoding, const uint8_t * bytes, size_t num_bytes, jschar ** characters, size_t * num_characters) {
assert(encoding != NULL);
iconv_t state = iconv_open(UTF_16_INTERNAL, encoding);
if (state == (iconv_t) -1) {
return JSCOVERAGE_ERROR_ENCODING_NOT_SUPPORTED;
}
ICONV_CONST char * input = (char *) bytes;
size_t input_bytes_left = num_bytes;
jschar * c = xnew(jschar, num_bytes);
char * output = (char *) c;
size_t output_bytes_left = sizeof(jschar) * num_bytes;
size_t result = iconv(state, &input, &input_bytes_left, &output, &output_bytes_left);
iconv_close(state);
if (result == (size_t) -1) {
free(c);
return JSCOVERAGE_ERROR_INVALID_BYTE_SEQUENCE;
}
assert(input_bytes_left == 0);
size_t nc = ((jschar *) output) - c;
skip_bom(&c, &nc);
*characters = c;
*num_characters = nc;
return 0;
}
#elif HAVE_MULTIBYTETOWIDECHAR
/* http://msdn.microsoft.com/en-us/library/ms776446(VS.85).aspx */
static struct CodePage {
UINT value;
LPCSTR string;
} code_pages[] = {
{37, "IBM037"}, /* IBM EBCDIC US-Canada */
{437, "IBM437"}, /* OEM United States */
{500, "IBM500"}, /* IBM EBCDIC International */
{708, "ASMO-708"}, /* Arabic (ASMO 708) */
{720, "DOS-720"}, /* Arabic (Transparent ASMO); Arabic (DOS) */
{737, "ibm737"}, /* OEM Greek (formerly 437G); Greek (DOS) */
{775, "ibm775"}, /* OEM Baltic; Baltic (DOS) */
{850, "ibm850"}, /* OEM Multilingual Latin 1; Western European (DOS) */
{852, "ibm852"}, /* OEM Latin 2; Central European (DOS) */
{855, "IBM855"}, /* OEM Cyrillic (primarily Russian) */
{857, "ibm857"}, /* OEM Turkish; Turkish (DOS) */
{858, "IBM00858"}, /* OEM Multilingual Latin 1 + Euro symbol */
{860, "IBM860"}, /* OEM Portuguese; Portuguese (DOS) */
{861, "ibm861"}, /* OEM Icelandic; Icelandic (DOS) */
{862, "DOS-862"}, /* OEM Hebrew; Hebrew (DOS) */
{863, "IBM863"}, /* OEM French Canadian; French Canadian (DOS) */
{864, "IBM864"}, /* OEM Arabic; Arabic (864) */
{865, "IBM865"}, /* OEM Nordic; Nordic (DOS) */
{866, "cp866"}, /* OEM Russian; Cyrillic (DOS) */
{869, "ibm869"}, /* OEM Modern Greek; Greek, Modern (DOS) */
{870, "IBM870"}, /* IBM EBCDIC Multilingual/ROECE (Latin 2); IBM EBCDIC Multilingual Latin 2 */
{874, "windows-874"}, /* ANSI/OEM Thai (same as 28605, ISO 8859-15); Thai (Windows) */
{875, "cp875"}, /* IBM EBCDIC Greek Modern */
{932, "shift_jis"}, /* ANSI/OEM Japanese; Japanese (Shift-JIS) */
{936, "gb2312"}, /* ANSI/OEM Simplified Chinese (PRC, Singapore); Chinese Simplified (GB2312) */
{949, "ks_c_5601-1987"}, /* ANSI/OEM Korean (Unified Hangul Code) */
{950, "big5"}, /* ANSI/OEM Traditional Chinese (Taiwan; Hong Kong SAR, PRC); Chinese Traditional (Big5) */
{1026, "IBM1026"}, /* IBM EBCDIC Turkish (Latin 5) */
{1047, "IBM01047"}, /* IBM EBCDIC Latin 1/Open System */
{1140, "IBM01140"}, /* IBM EBCDIC US-Canada (037 + Euro symbol); IBM EBCDIC (US-Canada-Euro) */
{1141, "IBM01141"}, /* IBM EBCDIC Germany (20273 + Euro symbol); IBM EBCDIC (Germany-Euro) */
{1142, "IBM01142"}, /* IBM EBCDIC Denmark-Norway (20277 + Euro symbol); IBM EBCDIC (Denmark-Norway-Euro) */
{1143, "IBM01143"}, /* IBM EBCDIC Finland-Sweden (20278 + Euro symbol); IBM EBCDIC (Finland-Sweden-Euro) */
{1144, "IBM01144"}, /* IBM EBCDIC Italy (20280 + Euro symbol); IBM EBCDIC (Italy-Euro) */
{1145, "IBM01145"}, /* IBM EBCDIC Latin America-Spain (20284 + Euro symbol); IBM EBCDIC (Spain-Euro) */
{1146, "IBM01146"}, /* IBM EBCDIC United Kingdom (20285 + Euro symbol); IBM EBCDIC (UK-Euro) */
{1147, "IBM01147"}, /* IBM EBCDIC France (20297 + Euro symbol); IBM EBCDIC (France-Euro) */
{1148, "IBM01148"}, /* IBM EBCDIC International (500 + Euro symbol); IBM EBCDIC (International-Euro) */
{1149, "IBM01149"}, /* IBM EBCDIC Icelandic (20871 + Euro symbol); IBM EBCDIC (Icelandic-Euro) */
{1200, "utf-16"}, /* Unicode UTF-16, little endian byte order (BMP of ISO 10646); available only to managed applications */
{1201, "unicodeFFFE"}, /* Unicode UTF-16, big endian byte order; available only to managed applications */
{1250, "windows-1250"}, /* ANSI Central European; Central European (Windows) */
{1251, "windows-1251"}, /* ANSI Cyrillic; Cyrillic (Windows) */
{1252, "windows-1252"}, /* ANSI Latin 1; Western European (Windows) */
{1253, "windows-1253"}, /* ANSI Greek; Greek (Windows) */
{1254, "windows-1254"}, /* ANSI Turkish; Turkish (Windows) */
{1255, "windows-1255"}, /* ANSI Hebrew; Hebrew (Windows) */
{1256, "windows-1256"}, /* ANSI Arabic; Arabic (Windows) */
{1257, "windows-1257"}, /* ANSI Baltic; Baltic (Windows) */
{1258, "windows-1258"}, /* ANSI/OEM Vietnamese; Vietnamese (Windows) */
{1361, "Johab"}, /* Korean (Johab) */
{10000, "macintosh"}, /* MAC Roman; Western European (Mac) */
{10001, "x-mac-japanese"}, /* Japanese (Mac) */
{10002, "x-mac-chinesetrad"}, /* MAC Traditional Chinese (Big5); Chinese Traditional (Mac) */
{10003, "x-mac-korean"}, /* Korean (Mac) */
{10004, "x-mac-arabic"}, /* Arabic (Mac) */
{10005, "x-mac-hebrew"}, /* Hebrew (Mac) */
{10006, "x-mac-greek"}, /* Greek (Mac) */
{10007, "x-mac-cyrillic"}, /* Cyrillic (Mac) */
{10008, "x-mac-chinesesimp"}, /* MAC Simplified Chinese (GB 2312); Chinese Simplified (Mac) */
{10010, "x-mac-romanian"}, /* Romanian (Mac) */
{10017, "x-mac-ukrainian"}, /* Ukrainian (Mac) */
{10021, "x-mac-thai"}, /* Thai (Mac) */
{10029, "x-mac-ce"}, /* MAC Latin 2; Central European (Mac) */
{10079, "x-mac-icelandic"}, /* Icelandic (Mac) */
{10081, "x-mac-turkish"}, /* Turkish (Mac) */
{10082, "x-mac-croatian"}, /* Croatian (Mac) */
{12000, "utf-32"}, /* Unicode UTF-32, little endian byte order; available only to managed applications */
{12001, "utf-32BE"}, /* Unicode UTF-32, big endian byte order; available only to managed applications */
{20000, "x-Chinese_CNS"}, /* CNS Taiwan; Chinese Traditional (CNS) */
{20001, "x-cp20001"}, /* TCA Taiwan */
{20002, "x_Chinese-Eten"}, /* Eten Taiwan; Chinese Traditional (Eten) */
{20003, "x-cp20003"}, /* IBM5550 Taiwan */
{20004, "x-cp20004"}, /* TeleText Taiwan */
{20005, "x-cp20005"}, /* Wang Taiwan */
{20105, "x-IA5"}, /* IA5 (IRV International Alphabet No. 5, 7-bit); Western European (IA5) */
{20106, "x-IA5-German"}, /* IA5 German (7-bit) */
{20107, "x-IA5-Swedish"}, /* IA5 Swedish (7-bit) */
{20108, "x-IA5-Norwegian"}, /* IA5 Norwegian (7-bit) */
{20127, "us-ascii"}, /* US-ASCII (7-bit) */
{20261, "x-cp20261"}, /* T.61 */
{20269, "x-cp20269"}, /* ISO 6937 Non-Spacing Accent */
{20273, "IBM273"}, /* IBM EBCDIC Germany */
{20277, "IBM277"}, /* IBM EBCDIC Denmark-Norway */
{20278, "IBM278"}, /* IBM EBCDIC Finland-Sweden */
{20280, "IBM280"}, /* IBM EBCDIC Italy */
{20284, "IBM284"}, /* IBM EBCDIC Latin America-Spain */
{20285, "IBM285"}, /* IBM EBCDIC United Kingdom */
{20290, "IBM290"}, /* IBM EBCDIC Japanese Katakana Extended */
{20297, "IBM297"}, /* IBM EBCDIC France */
{20420, "IBM420"}, /* IBM EBCDIC Arabic */
{20423, "IBM423"}, /* IBM EBCDIC Greek */
{20424, "IBM424"}, /* IBM EBCDIC Hebrew */
{20833, "x-EBCDIC-KoreanExtended"}, /* IBM EBCDIC Korean Extended */
{20838, "IBM-Thai"}, /* IBM EBCDIC Thai */
{20866, "koi8-r"}, /* Russian (KOI8-R); Cyrillic (KOI8-R) */
{20871, "IBM871"}, /* IBM EBCDIC Icelandic */
{20880, "IBM880"}, /* IBM EBCDIC Cyrillic Russian */
{20905, "IBM905"}, /* IBM EBCDIC Turkish */
{20924, "IBM00924"}, /* IBM EBCDIC Latin 1/Open System (1047 + Euro symbol) */
{20932, "EUC-JP"}, /* Japanese (JIS 0208-1990 and 0121-1990) */
{20936, "x-cp20936"}, /* Simplified Chinese (GB2312); Chinese Simplified (GB2312-80) */
{20949, "x-cp20949"}, /* Korean Wansung */
{21025, "cp1025"}, /* IBM EBCDIC Cyrillic Serbian-Bulgarian */
{21866, "koi8-u"}, /* Ukrainian (KOI8-U); Cyrillic (KOI8-U) */
{28591, "iso-8859-1"}, /* ISO 8859-1 Latin 1; Western European (ISO) */
{28592, "iso-8859-2"}, /* ISO 8859-2 Central European; Central European (ISO) */
{28593, "iso-8859-3"}, /* ISO 8859-3 Latin 3 */
{28594, "iso-8859-4"}, /* ISO 8859-4 Baltic */
{28595, "iso-8859-5"}, /* ISO 8859-5 Cyrillic */
{28596, "iso-8859-6"}, /* ISO 8859-6 Arabic */
{28597, "iso-8859-7"}, /* ISO 8859-7 Greek */
{28598, "iso-8859-8"}, /* ISO 8859-8 Hebrew; Hebrew (ISO-Visual) */
{28599, "iso-8859-9"}, /* ISO 8859-9 Turkish */
{28603, "iso-8859-13"}, /* ISO 8859-13 Estonian */
{28605, "iso-8859-15"}, /* ISO 8859-15 Latin 9 */
{29001, "x-Europa"}, /* Europa 3 */
{38598, "iso-8859-8-i"}, /* ISO 8859-8 Hebrew; Hebrew (ISO-Logical) */
{50220, "iso-2022-jp"}, /* ISO 2022 Japanese with no halfwidth Katakana; Japanese (JIS) */
{50221, "csISO2022JP"}, /* ISO 2022 Japanese with halfwidth Katakana; Japanese (JIS-Allow 1 byte Kana) */
{50222, "iso-2022-jp"}, /* ISO 2022 Japanese JIS X 0201-1989; Japanese (JIS-Allow 1 byte Kana - SO/SI) */
{50225, "iso-2022-kr"}, /* ISO 2022 Korean */
{50227, "x-cp50227"}, /* ISO 2022 Simplified Chinese; Chinese Simplified (ISO 2022) */
{51932, "euc-jp"}, /* EUC Japanese */
{51936, "EUC-CN"}, /* EUC Simplified Chinese; Chinese Simplified (EUC) */
{51949, "euc-kr"}, /* EUC Korean */
{52936, "hz-gb-2312"}, /* HZ-GB2312 Simplified Chinese; Chinese Simplified (HZ) */
{54936, "GB18030"}, /* Windows XP and later: GB18030 Simplified Chinese (4 byte); Chinese Simplified (GB18030) */
{57002, "x-iscii-de"}, /* ISCII Devanagari */
{57003, "x-iscii-be"}, /* ISCII Bengali */
{57004, "x-iscii-ta"}, /* ISCII Tamil */
{57005, "x-iscii-te"}, /* ISCII Telugu */
{57006, "x-iscii-as"}, /* ISCII Assamese */
{57007, "x-iscii-or"}, /* ISCII Oriya */
{57008, "x-iscii-ka"}, /* ISCII Kannada */
{57009, "x-iscii-ma"}, /* ISCII Malayalam */
{57010, "x-iscii-gu"}, /* ISCII Gujarati */
{57011, "x-iscii-pa"}, /* ISCII Punjabi */
{65000, "utf-7"}, /* Unicode (UTF-7) */
{65001, "utf-8"}, /* Unicode (UTF-8) */
};
int find_code_page(const char * encoding, UINT * code_page) {
for (size_t i = 0; i < sizeof(code_pages) / sizeof(code_pages[0]); i++) {
if (strcasecmp(encoding, code_pages[i].string) == 0) {
*code_page = code_pages[i].value;
return 0;
}
}
return -1;
}
int jscoverage_bytes_to_characters(const char * encoding, const uint8_t * bytes, size_t num_bytes, jschar ** characters, size_t * num_characters) {
assert(encoding != NULL);
if (num_bytes == 0) {
*characters = xnew(jschar, 0);
*num_characters = 0;
return 0;
}
UINT code_page;
if (find_code_page(encoding, &code_page) != 0) {
return JSCOVERAGE_ERROR_ENCODING_NOT_SUPPORTED;
}
if (num_bytes > INT_MAX) {
fatal("overflow");
}
*characters = xnew(jschar, num_bytes);
int result = MultiByteToWideChar(code_page, MB_ERR_INVALID_CHARS, bytes, num_bytes, *characters, num_bytes);
if (result == 0) {
free(*characters);
return JSCOVERAGE_ERROR_INVALID_BYTE_SEQUENCE;
}
*num_characters = result;
skip_bom(characters, num_characters);
return 0;
}
#else
int jscoverage_bytes_to_characters(const char * encoding, const uint8_t * bytes, size_t num_bytes, jschar ** characters, size_t * num_characters) {
assert(encoding != NULL);
if (strcasecmp(encoding, "us-ascii") != 0 && strcasecmp(encoding, "iso-8859-1") != 0 && strcasecmp(encoding, "utf-8") != 0) {
return JSCOVERAGE_ERROR_ENCODING_NOT_SUPPORTED;
}
jschar * c = xnew(jschar, num_bytes);
for (size_t i = 0; i < num_bytes; i++) {
if (bytes[i] > 127) {
free(c);
return JSCOVERAGE_ERROR_ENCODING_NOT_SUPPORTED;
}
c[i] = bytes[i];
}
*characters = c;
*num_characters = num_bytes;
return 0;
}
#endif