コード例 #1
0
ファイル: MACUCS.C プロジェクト: moka/literacies
void init_ucs(Session *s)
{
    int i;

    s->ucsdata.line_codepage = decode_codepage(s->cfg.line_codepage);

    /* Find the line control characters. FIXME: this is not right. */
    for (i = 0; i < 256; i++)
	if (i < ' ' || (i >= 0x7F && i < 0xA0))
	    s->ucsdata.unitab_ctrl[i] = i;
	else
	    s->ucsdata.unitab_ctrl[i] = 0xFF;

    for (i = 0; i < 256; i++)
	s->ucsdata.unitab_line[i] = s->ucsdata.unitab_scoacs[i] = i;

    /* VT100 graphics - NB: Broken for non-ascii CP's */
    memcpy(s->ucsdata.unitab_xterm, s->ucsdata.unitab_line,
	   sizeof(s->ucsdata.unitab_xterm));
    memcpy(s->ucsdata.unitab_xterm + '`', unitab_xterm_std,
	   sizeof(unitab_xterm_std));
    s->ucsdata.unitab_xterm['_'] = ' ';

}
コード例 #2
0
ファイル: uxucs.c プロジェクト: NaldoDj/VeraCrypt
/*
 * Return value is true if pterm is to run in direct-to-font mode.
 */
bool init_ucs(struct unicode_data *ucsdata, char *linecharset,
              bool utf8_override, int font_charset, int vtmode)
{
    int i;
    bool ret = false;

    /*
     * In the platform-independent parts of the code, font_codepage
     * is used only for system DBCS support - which we don't
     * support at all. So we set this to something which will never
     * be used.
     */
    ucsdata->font_codepage = -1;

    /*
     * If utf8_override is set and the POSIX locale settings
     * dictate a UTF-8 character set, then just go straight for
     * UTF-8.
     */
    ucsdata->line_codepage = CS_NONE;
    if (utf8_override) {
	const char *s;
	if (((s = getenv("LC_ALL"))   && *s) ||
	    ((s = getenv("LC_CTYPE")) && *s) ||
	    ((s = getenv("LANG"))     && *s)) {
	    if (strstr(s, "UTF-8"))
		ucsdata->line_codepage = CS_UTF8;
	}
    }

    /*
     * Failing that, line_codepage should be decoded from the
     * specification in conf.
     */
    if (ucsdata->line_codepage == CS_NONE)
	ucsdata->line_codepage = decode_codepage(linecharset);

    /*
     * If line_codepage is _still_ CS_NONE, we assume we're using
     * the font's own encoding. This has been passed in to us, so
     * we use that. If it's still CS_NONE after _that_ - i.e. the
     * font we were given had an incomprehensible charset - then we
     * fall back to using the D800 page.
     */
    if (ucsdata->line_codepage == CS_NONE)
	ucsdata->line_codepage = font_charset;

    if (ucsdata->line_codepage == CS_NONE)
	ret = true;

    /*
     * Set up unitab_line, by translating each individual character
     * in the line codepage into Unicode.
     */
    for (i = 0; i < 256; i++) {
	char c[1];
        const char *p;
	wchar_t wc[1];
	int len;
	c[0] = i;
	p = c;
	len = 1;
	if (ucsdata->line_codepage == CS_NONE)
	    ucsdata->unitab_line[i] = 0xD800 | i;
	else if (1 == charset_to_unicode(&p, &len, wc, 1,
					 ucsdata->line_codepage,
					 NULL, L"", 0))
	    ucsdata->unitab_line[i] = wc[0];
	else
	    ucsdata->unitab_line[i] = 0xFFFD;
    }

    /*
     * Set up unitab_xterm. This is the same as unitab_line except
     * in the line-drawing regions, where it follows the Unicode
     * encoding.
     * 
     * (Note that the strange X encoding of line-drawing characters
     * in the bottom 32 glyphs of ISO8859-1 fonts is taken care of
     * by the font encoding, which will spot such a font and act as
     * if it were in a variant encoding of ISO8859-1.)
     */
    for (i = 0; i < 256; i++) {
	static const wchar_t unitab_xterm_std[32] = {
	    0x2666, 0x2592, 0x2409, 0x240c, 0x240d, 0x240a, 0x00b0, 0x00b1,
	    0x2424, 0x240b, 0x2518, 0x2510, 0x250c, 0x2514, 0x253c, 0x23ba,
	    0x23bb, 0x2500, 0x23bc, 0x23bd, 0x251c, 0x2524, 0x2534, 0x252c,
	    0x2502, 0x2264, 0x2265, 0x03c0, 0x2260, 0x00a3, 0x00b7, 0x0020
	};
	static const wchar_t unitab_xterm_poorman[32] =
	    L"*#****o~**+++++-----++++|****L. ";

	const wchar_t *ptr;

	if (vtmode == VT_POORMAN)
	    ptr = unitab_xterm_poorman;
	else
	    ptr = unitab_xterm_std;

	if (i >= 0x5F && i < 0x7F)
	    ucsdata->unitab_xterm[i] = ptr[i & 0x1F];
	else
	    ucsdata->unitab_xterm[i] = ucsdata->unitab_line[i];
    }

    /*
     * Set up unitab_scoacs. The SCO Alternate Character Set is
     * simply CP437.
     */
    for (i = 0; i < 256; i++) {
	char c[1];
        const char *p;
	wchar_t wc[1];
	int len;
	c[0] = i;
	p = c;
	len = 1;
	if (1 == charset_to_unicode(&p, &len, wc, 1, CS_CP437, NULL, L"", 0))
	    ucsdata->unitab_scoacs[i] = wc[0];
	else
	    ucsdata->unitab_scoacs[i] = 0xFFFD;
    }

    /*
     * Find the control characters in the line codepage. For
     * direct-to-font mode using the D800 hack, we assume 00-1F and
     * 7F are controls, but allow 80-9F through. (It's as good a
     * guess as anything; and my bet is that half the weird fonts
     * used in this way will be IBM or MS code pages anyway.)
     */
    for (i = 0; i < 256; i++) {
	int lineval = ucsdata->unitab_line[i];
	if (lineval < ' ' || (lineval >= 0x7F && lineval < 0xA0) ||
	    (lineval >= 0xD800 && lineval < 0xD820) || (lineval == 0xD87F))
	    ucsdata->unitab_ctrl[i] = i;
	else
	    ucsdata->unitab_ctrl[i] = 0xFF;
    }

    return ret;
}