139 lines
4.3 KiB
C
139 lines
4.3 KiB
C
#include <iconv.h>
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#include <errno.h>
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#include "find-font.h"
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struct mac_font_mapping {
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unsigned short encoding_id;
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unsigned short language_id;
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const char *code_page;
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};
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#define TT_MAC_LANGID_ANY 0xFFFF
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static const struct mac_font_mapping mac_codes[] = {
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{TT_MAC_ID_ROMAN, TT_MAC_LANGID_ENGLISH, "macintosh"},
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{TT_MAC_ID_ROMAN, TT_MAC_LANGID_ICELANDIC, "x-mac-icelandic"},
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{TT_MAC_ID_ROMAN, TT_MAC_LANGID_TURKISH, "x-mac-ce"},
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{TT_MAC_ID_ROMAN, TT_MAC_LANGID_POLISH, "x-mac-ce"},
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{TT_MAC_ID_ROMAN, TT_MAC_LANGID_ROMANIAN, "x-mac-romanian"},
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{TT_MAC_ID_ROMAN, TT_MAC_LANGID_CZECH, "x-mac-ce"},
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{TT_MAC_ID_ROMAN, TT_MAC_LANGID_SLOVAK, "x-mac-ce"},
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{TT_MAC_ID_ROMAN, TT_MAC_LANGID_ANY, "macintosh"},
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{TT_MAC_ID_JAPANESE, TT_MAC_LANGID_JAPANESE, "Shift_JIS"},
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{TT_MAC_ID_JAPANESE, TT_MAC_LANGID_ANY, "Shift_JIS"},
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{TT_MAC_ID_KOREAN, TT_MAC_LANGID_KOREAN, "EUC-KR"},
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{TT_MAC_ID_KOREAN, TT_MAC_LANGID_ANY, "EUC-KR"},
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{TT_MAC_ID_ARABIC, TT_MAC_LANGID_ARABIC, "x-mac-arabic"},
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{TT_MAC_ID_ARABIC, TT_MAC_LANGID_URDU, "x-mac-farsi"},
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{TT_MAC_ID_ARABIC, TT_MAC_LANGID_FARSI, "x-mac-farsi"},
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{TT_MAC_ID_ARABIC, TT_MAC_LANGID_ANY, "x-mac-arabic"},
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{TT_MAC_ID_HEBREW, TT_MAC_LANGID_HEBREW, "x-mac-hebrew"},
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{TT_MAC_ID_HEBREW, TT_MAC_LANGID_ANY, "x-mac-hebrew"},
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{TT_MAC_ID_GREEK, TT_MAC_LANGID_ANY, "x-mac-greek"},
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{TT_MAC_ID_RUSSIAN, TT_MAC_LANGID_ANY, "x-mac-cyrillic"},
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{TT_MAC_ID_DEVANAGARI, TT_MAC_LANGID_ANY, "x-mac-devanagari"},
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{TT_MAC_ID_GURMUKHI, TT_MAC_LANGID_ANY, "x-mac-gurmukhi"},
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{TT_MAC_ID_GUJARATI, TT_MAC_LANGID_ANY, "x-mac-gujarati"},
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{TT_MAC_ID_TRADITIONAL_CHINESE, TT_MAC_LANGID_CHINESE_SIMPLIFIED,
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"Big5"},
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{TT_MAC_ID_TRADITIONAL_CHINESE, TT_MAC_LANGID_ANY, "Big5"},
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{TT_MAC_ID_SIMPLIFIED_CHINESE, TT_MAC_LANGID_CHINESE_SIMPLIFIED,
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"GB2312"},
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{TT_MAC_ID_SIMPLIFIED_CHINESE, TT_MAC_LANGID_ANY, "GB2312"}};
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const char *iso_codes[] = {"us-ascii", NULL, "iso-8859-1"};
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const char *ms_codes[] = {"UTF-16BE", "UTF-16BE", "Shift_JIS", NULL,
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"Big5", NULL, NULL, NULL,
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NULL, NULL, "UTF-16BE"};
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static const size_t mac_code_count = sizeof(mac_codes) / sizeof(mac_codes[0]);
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static const size_t iso_code_count = sizeof(iso_codes) / sizeof(iso_codes[0]);
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static const size_t ms_code_count = sizeof(ms_codes) / sizeof(ms_codes[0]);
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static const char *get_mac_code(uint16_t encoding_id, uint16_t language_id)
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{
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for (size_t i = 0; i < mac_code_count; i++) {
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const struct mac_font_mapping *mac_code = &mac_codes[i];
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if (mac_code->encoding_id == encoding_id &&
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mac_code->language_id == language_id)
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return mac_code->code_page;
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}
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return NULL;
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}
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static const char *get_code_page_for_font(uint16_t platform_id,
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uint16_t encoding_id,
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uint16_t language_id)
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{
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const char *ret;
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switch (platform_id) {
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case TT_PLATFORM_APPLE_UNICODE:
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return "UTF-16BE";
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case TT_PLATFORM_MACINTOSH:
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ret = get_mac_code(encoding_id, language_id);
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if (!ret)
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ret = get_mac_code(encoding_id, TT_MAC_LANGID_ANY);
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return ret;
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case TT_PLATFORM_ISO:
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if (encoding_id < iso_code_count)
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return iso_codes[encoding_id];
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break;
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case TT_PLATFORM_MICROSOFT:
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if (encoding_id < ms_code_count)
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return ms_codes[encoding_id];
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break;
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}
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return NULL;
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}
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char *sfnt_name_to_utf8(FT_SfntName *sfnt_name)
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{
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const char *charset = get_code_page_for_font(sfnt_name->platform_id,
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sfnt_name->encoding_id,
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sfnt_name->language_id);
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char utf8[256];
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char *conv_in, *conv_out;
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size_t in_len, out_len;
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if (!charset) {
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blog(LOG_DEBUG,
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"invalid character set found, "
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"platform_id: %d, encoding_id: %d, "
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"language_id: %d",
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sfnt_name->platform_id, sfnt_name->encoding_id,
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sfnt_name->language_id);
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return NULL;
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}
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iconv_t ic = iconv_open("UTF-8", charset);
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if (ic == (iconv_t)-1) {
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blog(LOG_DEBUG,
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"couldn't intialize font code page "
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"conversion: '%s' to 'utf-8': errno = %d",
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charset, (int)errno);
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return NULL;
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}
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conv_in = (char *)sfnt_name->string;
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conv_out = utf8;
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in_len = sfnt_name->string_len;
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out_len = 256;
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size_t n = iconv(ic, &conv_in, &in_len, &conv_out, &out_len);
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if (n == (size_t)-1) {
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blog(LOG_WARNING, "couldn't convert font name text: errno = %d",
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(int)errno);
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iconv_close(ic);
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return NULL;
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}
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iconv_close(ic);
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*conv_out = 0;
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return bstrdup(utf8);
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}
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