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/*
* Setting default font and encoding according to user's locale (LC_CTYPE).
*/
#include "config.h"
#include "feature.h"
#include "font.h"
#include "defaultfont.h"
#define ENCODINGBUFLEN 100
#ifdef AUTO_ENCODING
/*
* Table to convert from encoding names to enc_label.
* This table is useful to normalize encoding names
* and support various return value from nl_langinfo(3).
*
* The encoding names here are "truncated" names,
* where all alphabets are uppercase and all '-' and
* '_' are eliminated.
*/
const struct name2encoding n2e[] = {
#ifdef MULTI_CHARSET
{"EUCJP", ENC_EUCJ},
{"UJIS", ENC_EUCJ},
{"SHIFTJIS", ENC_SJIS},
{"SJIS", ENC_SJIS},
{"EUCKR", ENC_EUCKR},
{"EUCCN", ENC_GB},
{"GB2312", ENC_GB},
{"GB", ENC_GB},
{"BIG5", ENC_BIG5},
{"BIGFIVE", ENC_BIG5},
{"BIG5HKSCS", ENC_BIG5},
{"UTF8", ENC_UTF8},
#endif /* MULTI_CHARSET */
{"KOI8R", ENC_KOI8R},
{"KOI8U", ENC_KOI8U},
{"ISO88591", ENC_ISO8859_1},
{"ISO88592", ENC_ISO8859_2},
{"ISO88593", ENC_ISO8859_3},
{"ISO88594", ENC_ISO8859_4},
{"ISO88595", ENC_ISO8859_5},
{"ISO88596", ENC_ISO8859_6},
{"ISO88597", ENC_ISO8859_7},
{"ISO88598", ENC_ISO8859_8},
{"ISO88599", ENC_ISO8859_9},
{"ISO885910", ENC_ISO8859_10},
{"ISO885911", ENC_ISO8859_11},
{"ISO885912", ENC_ISO8859_12},
{"ISO885913", ENC_ISO8859_13},
{"ISO885914", ENC_ISO8859_14},
{"ISO885915", ENC_ISO8859_15},
{NULL, ENC_DUMMY}
};
/*
* This table converts from locale names to enc_label.
*
* This table is used to know which encoding is used
* as the default in the current user environment
* (LC_CTYPE locale), since it is the standard way
* for users to specify encoding by LANG/LC_CTYPE/LC_ALL
* variables (i.e., LC_CTYPE locale). Consult locale(7).
*
* This table is used when nl_langinfo(3) is not available
* or it fails.
*
* locale names whose "encoding" part are listed in n2e[]
* can be omitted here, because "encoding" part is checked
* separately before l2e[] check.
*
* Note that longer locale names must be written earlier
* than shorter locale names in this table, because
* strncmp(3) is used for seek for this table.
*/
const struct name2encoding l2e[] = {
#ifdef MULTI_CHARSET
{"ja_JP.EUC", ENC_EUCJ},
{"ja_JP", ENC_EUCJ},
{"ko_KR.EUC", ENC_EUCKR},
{"ko_KR", ENC_EUCKR},
{"zh_CN.EUC", ENC_GB},
{"zh_CN", ENC_GB},
{"zh_TW", ENC_BIG5},
#endif /* MULTI_CHARSET */
{"da", ENC_ISO8859_1},
{"de", ENC_ISO8859_1},
{"en", ENC_ISO8859_1},
{"fi", ENC_ISO8859_1},
{"fr", ENC_ISO8859_1},
{"is", ENC_ISO8859_1},
{"it", ENC_ISO8859_1},
{"la", ENC_ISO8859_1},
{"lt", ENC_ISO8859_1},
{"nl", ENC_ISO8859_1},
{"no", ENC_ISO8859_1},
{"pt", ENC_ISO8859_1},
{"sv", ENC_ISO8859_1},
{"cs", ENC_ISO8859_2},
{"hr", ENC_ISO8859_2},
{"hu", ENC_ISO8859_2},
{"la", ENC_ISO8859_2},
{"lt", ENC_ISO8859_2},
{"pl", ENC_ISO8859_2},
{"ro", ENC_ISO8859_2},
{"sk", ENC_ISO8859_2},
{"sl", ENC_ISO8859_2},
{"ar", ENC_ISO8859_6},
{"el", ENC_ISO8859_7},
{"tr", ENC_ISO8859_9},
{"lt", ENC_ISO8859_13},
{"lv", ENC_ISO8859_13},
{"mi", ENC_ISO8859_13},
{"ru", ENC_KOI8R}, /* ISO8859-5 ? */
{"uk", ENC_KOI8U},
#if 0
{"vi", ENC_VISCII},
{"th", ENC_TIS620},
#endif
{NULL, ENC_DUMMY}
};
/*
* Default font name for each language.
* I'd like these names edited by native speakers.
*
* enc_label --> ENCODING_METHOD and font informations
* which as needed for Eterm to work.
*/
const struct defaultfont defaultfont[] = {
#ifdef MULTI_CHARSET
{ENC_EUCJ, "eucj", DEF_EUCJ, {NFONT_LIST_EUCJ}, {MFONT_LIST_EUCJ}},
{ENC_SJIS, "sjis", DEF_EUCJ, {NFONT_LIST_EUCJ}, {MFONT_LIST_EUCJ}},
{ENC_GB, "gb", DEF_GB, {NFONT_LIST_GB}, {MFONT_LIST_GB}},
{ENC_BIG5, "big5", DEF_BIG5, {NFONT_LIST_BIG5}, {MFONT_LIST_BIG5}},
{ENC_EUCKR, "euckr", DEF_EUCKR, {NFONT_LIST_EUCKR}, {MFONT_LIST_EUCKR}},
{ENC_UTF8, "iso-10646", DEF_10646, {NFONT_LIST_10646}, {MFONT_LIST_10646}},
#endif /* MULTI_CHARSET */
{ENC_ISO8859_7, "none", DEF_7, {NFONT_LIST_7}, {MFONT_LIST_NULL}},
{ENC_KOI8R, "none", DEF_KOI8R, {NFONT_LIST_KOI8R}, {MFONT_LIST_NULL}},
{ENC_KOI8U, "none", DEF_KOI8U, {NFONT_LIST_KOI8U}, {MFONT_LIST_NULL}},
{ENC_DUMMY, "none", DEF_DUMMY, {MFONT_LIST_NULL}, {MFONT_LIST_NULL}}
};
/* special common rule for ISO-8859-x */
const char *const defaultfont_8859[] = {
NFONT_LIST_ISO8859X
};
/* fallback defaults */
const int def_def_idx = DEF_10646;
const char *const def_fonts[] = {
NFONT_LIST_10646
};
#ifdef MULTI_CHARSET
const char *const def_mfonts[] = {
MFONT_LIST_10646
};
#endif
/*----------------------------------------------------------------------*/
/* EXTPROTO */
void
eterm_default_font_locale(char ***fonts, char ***mfonts, char **mencoding, int *def_idx)
{
char *locale;
char *encoding_str = NULL;
char encoding_buf[ENCODINGBUFLEN];
char *p, *p2;
enum enc_label encoding = ENC_DUMMY;
int j, k;
locale = setlocale(LC_CTYPE, "");
if (!locale)
if (!(locale = getenv("LC_ALL")))
if (!(locale = getenv("LC_CTYPE")))
if (!(locale = getenv("LANG")))
locale = "C"; /* failsafe */
/* Obtain a "normalized" name of current encoding.
* The current encoding is available via nl_langinfo().
* Otherwise, it comes from locale name.
*/
#if defined(HAVE_NL_LANGINFO) && defined(CODESET)
encoding_str = nl_langinfo(CODESET);
#else
encoding_str = NULL;
#endif
if (encoding_str && *encoding_str) {
for (j = 0; n2e[j].name; j++) {
if (!strcmp(encoding_str, n2e[j].name)) {
encoding = n2e[j].encoding;
break;
}
}
}
if (encoding == ENC_DUMMY) {
p = strchr(locale, '.');
if (p) {
strncpy(encoding_buf, p + 1, ENCODINGBUFLEN);
p = strchr(encoding_buf, '@');
if (p)
*p = 0;
} else {
strncpy(encoding_buf, locale, ENCODINGBUFLEN);
}
encoding_buf[ENCODINGBUFLEN - 1] = 0;
for (p = p2 = encoding_buf; 1; p++, p2++) {
while (*p2 == '_' || *p2 == '-')
p2++;
if (!*p2)
break;
*p = toupper(*p2);
}
*p = 0;
for (j = 0; n2e[j].name; j++) {
if (!strcmp(encoding_buf, n2e[j].name)) {
encoding = n2e[j].encoding;
break;
}
}
}
/* If the conversion fails, try using "language"/"country"
* part of the locale name.
*/
if (encoding == ENC_DUMMY) {
for (j = 0; l2e[j].name; j++) {
if (!strncmp(locale, l2e[j].name, strlen(l2e[j].name))) {
encoding = l2e[j].encoding;
break;
}
}
}
/* Now, the encoding to be used has been determined.
* Fonts and encoding will be determined according to the encoding.
*/
for (j = 0; defaultfont[j].enc_label != ENC_DUMMY; j++) {
if (encoding == defaultfont[j].enc_label) {
*def_idx = defaultfont[j].def_idx;
#ifdef MULTI_CHARSET
*mencoding = STRDUP(defaultfont[j].encoding_method);
#endif
for (k = 0; k < NFONTS; k++) {
eterm_font_add(fonts, defaultfont[j].font[k], k);
#ifdef MULTI_CHARSET
eterm_font_add(mfonts, defaultfont[j].mfont[k], k);
#endif
}
return;
}
}
/*
* fallback for unknown encodings. ISO-8559-* gets special treatment
*/
#ifdef MULTI_CHARSET
*mencoding = STRDUP("none");
#endif
if (encoding >= ENC_ISO8859_1 && encoding <= ENC_ISO8859_LAST) {
/* fallback for ISO-8859-* encodings */
k = encoding - ENC_ISO8859_1 + 1;
*def_idx = DEF_8859;
} else {
/* fallback for "C", "POSIX", and invalid locales */
k = 0;
*def_idx = def_def_idx;
}
for (j = 0; j < NFONTS; j++) {
if (k == 0)
eterm_font_add(fonts, def_fonts[j], j);
else {
/* couple of wasted bytes each but lots of future expansion */
sprintf(encoding_buf, defaultfont_8859[j], k);
eterm_font_add(fonts, encoding_buf, j);
}
#ifdef MULTI_CHARSET
eterm_font_add(mfonts, def_mfonts[j], j);
#endif
}
}
#endif /* AUTO_ENCODING */
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