view lphobos/std/uni.d @ 1404:11b122f92136

Now that templates instantiations are no longer emitted for all modules that even blink at them they seem to break due to being linkonce (if compiled with any optimization level > 0), so let's give them weak linkage instead. The difference is that unreferenced linkonce symbols can be deleted, while weak symbols need to be preserved.
author Frits van Bommel <fvbommel wxs.nl>
date Thu, 21 May 2009 15:23:28 +0200
parents fd32135dca3e
children
line wrap: on
line source


// Written in the D programming language.

/*
 * Placed into the Public Domain.
 * Digital Mars, www.digitalmars.com
 * Written by Walter Bright
 */

/**
 * Simple Unicode character classification functions.
 * For ASCII classification, see $(LINK2 std_ctype.html, std.ctype).
 * Macros:
 *	WIKI=Phobos/StdUni
 * References:
 *	$(LINK2 http://www.digitalmars.com/d/ascii-table.html, ASCII Table),
 *	$(LINK2 http://en.wikipedia.org/wiki/Unicode, Wikipedia),
 *	$(LINK2 http://www.unicode.org, The Unicode Consortium)
 * Trademarks:
 *	Unicode(tm) is a trademark of Unicode, Inc.
 */


module std.uni;

/**
 * Returns !=0 if c is a Unicode lower case character.
 */
int isUniLower(dchar c)
{
    if (c <= 0x7F)
	return (c >= 'a' && c <= 'z');

    return isUniAlpha(c) && c == toUniLower(c);
}

/**
 * Returns !=0 if c is a Unicode upper case character.
 */
int isUniUpper(dchar c)
{
    if (c <= 0x7F)
	return (c >= 'A' && c <= 'Z');

    return isUniAlpha(c) && c == toUniUpper(c);
}

/**
 * If c is a Unicode upper case character, return the lower case
 * equivalent, otherwise return c.
 */
dchar toUniLower(dchar c)
{
    if (c >= 'A' && c <= 'Z')
    {
        c += 32;
    }
    else if (c >= 0x00C0)
    {
	if ((c >= 0x00C0 && c <= 0x00D6) || (c >= 0x00D8 && c<=0x00DE))
	{
	    c += 32;
	}
	else if ((c >= 0x0100 && c < 0x0138) || (c > 0x0149 && c < 0x0178))
	{
	    if (c == 0x0130)
		c = 0x0069;
	    else if ((c & 1) == 0)
		c += 1;
	}
	else if (c == 0x0178)
	{
	    c = 0x00FF;
	}
	else if ((c >= 0x0139 && c < 0x0149) || (c > 0x0178 && c < 0x017F))
	{
	    if (c & 1)
		c += 1;
	}
	else if (c >= 0x0200 && c <= 0x0217)
	{
	    if ((c & 1) == 0)
		c += 1;
	}
	else if ((c >= 0x0401 && c <= 0x040C) || (c>= 0x040E && c <= 0x040F))
	{
	    c += 80;
	}
	else if (c >= 0x0410  && c <= 0x042F)
	{
	    c += 32;
	}
	else if (c >= 0x0460 && c <= 0x047F)
	{
	    if ((c & 1) == 0)
		c += 1;
	}
	else if (c >= 0x0531 && c <= 0x0556)
	{
	    c += 48;
	}
	else if (c >= 0x10A0 && c <= 0x10C5)
	{
	    c += 48;
	}
	else if (c >= 0xFF21 && c <= 0xFF3A)
	{
	    c += 32;
	}
    }
    return c;
}

/**
 * If c is a Unicode lower case character, return the upper case
 * equivalent, otherwise return c.
 */
dchar toUniUpper(dchar c)
{
    if (c >= 'a' && c <= 'z')
    {
	c -= 32;
    }
    else if (c >= 0x00E0)
    {
	if ((c >= 0x00E0 && c <= 0x00F6) || (c >= 0x00F8 && c <= 0x00FE))
	{
	    c -= 32;
	}
	else if (c == 0x00FF)
	{
	    c = 0x0178;
	}
	else if ((c >= 0x0100 && c < 0x0138) || (c > 0x0149 && c < 0x0178))
	{
	    if (c == 0x0131)
		c = 0x0049;
	    else if (c & 1)
		c -= 1;
	}
	else if ((c >= 0x0139 && c < 0x0149) || (c > 0x0178 && c < 0x017F))
	{
	    if ((c & 1) == 0)
		c = c-1;
	}
	else if (c == 0x017F)
	{
	    c = 0x0053;
	}
	else if (c >= 0x0200 && c <= 0x0217)
	{
	    if (c & 1)
		c = c-1;
	}
	else if (c >= 0x0430 && c<= 0x044F)
	{
	    c -= 32;
	}
	else if ((c >= 0x0451 && c <= 0x045C) || (c >=0x045E && c<= 0x045F))
	{
	    c -= 80;
	}
	else if (c >= 0x0460 && c <= 0x047F)
	{
	    if (c & 1)
		c -= 1;
	}
	else if (c >= 0x0561 && c < 0x0587)
	{
	    c -= 48;
	}
	else if (c >= 0xFF41 && c <= 0xFF5A)
	{
	    c -= 32;
	}
    }
    return c;
}


/*******************************
 * Return !=0 if u is a Unicode alpha character.
 * (general Unicode category: Lu, Ll, Lt, Lm and Lo)
 *
 * Standards: Unicode 5.0.0
 */

int isUniAlpha(dchar u)
{
    static dchar table[][2] =
    [
	[ 'A', 'Z' ],
	[ 'a', 'z' ],
	[ 0x00AA, 0x00AA ],
	[ 0x00B5, 0x00B5 ],
	[ 0x00BA, 0x00BA ],
	[ 0x00C0, 0x00D6 ],
	[ 0x00D8, 0x00F6 ],
	[ 0x00F8, 0x02C1 ],
	[ 0x02C6, 0x02D1 ],
	[ 0x02E0, 0x02E4 ],
	[ 0x02EE, 0x02EE ],
	[ 0x037A, 0x037D ],
	[ 0x0386, 0x0386 ],
	[ 0x0388, 0x038A ],
	[ 0x038C, 0x038C ],
	[ 0x038E, 0x03A1 ],
	[ 0x03A3, 0x03CE ],
	[ 0x03D0, 0x03F5 ],
	[ 0x03F7, 0x0481 ],
	[ 0x048A, 0x0513 ],
	[ 0x0531, 0x0556 ],
	[ 0x0559, 0x0559 ],
	[ 0x0561, 0x0587 ],
	[ 0x05D0, 0x05EA ],
	[ 0x05F0, 0x05F2 ],
	[ 0x0621, 0x063A ],
	[ 0x0640, 0x064A ],
	[ 0x066E, 0x066F ],
	[ 0x0671, 0x06D3 ],
	[ 0x06D5, 0x06D5 ],
	[ 0x06E5, 0x06E6 ],
	[ 0x06EE, 0x06EF ],
	[ 0x06FA, 0x06FC ],
	[ 0x06FF, 0x06FF ],
	[ 0x0710, 0x0710 ],
	[ 0x0712, 0x072F ],
	[ 0x074D, 0x076D ],
	[ 0x0780, 0x07A5 ],
	[ 0x07B1, 0x07B1 ],
	[ 0x07CA, 0x07EA ],
	[ 0x07F4, 0x07F5 ],
	[ 0x07FA, 0x07FA ],
	[ 0x0904, 0x0939 ],
	[ 0x093D, 0x093D ],
	[ 0x0950, 0x0950 ],
	[ 0x0958, 0x0961 ],
	[ 0x097B, 0x097F ],
	[ 0x0985, 0x098C ],
	[ 0x098F, 0x0990 ],
	[ 0x0993, 0x09A8 ],
	[ 0x09AA, 0x09B0 ],
	[ 0x09B2, 0x09B2 ],
	[ 0x09B6, 0x09B9 ],
	[ 0x09BD, 0x09BD ],
	[ 0x09CE, 0x09CE ],
	[ 0x09DC, 0x09DD ],
	[ 0x09DF, 0x09E1 ],
	[ 0x09F0, 0x09F1 ],
	[ 0x0A05, 0x0A0A ],
	[ 0x0A0F, 0x0A10 ],
	[ 0x0A13, 0x0A28 ],
	[ 0x0A2A, 0x0A30 ],
	[ 0x0A32, 0x0A33 ],
	[ 0x0A35, 0x0A36 ],
	[ 0x0A38, 0x0A39 ],
	[ 0x0A59, 0x0A5C ],
	[ 0x0A5E, 0x0A5E ],
	[ 0x0A72, 0x0A74 ],
	[ 0x0A85, 0x0A8D ],
	[ 0x0A8F, 0x0A91 ],
	[ 0x0A93, 0x0AA8 ],
	[ 0x0AAA, 0x0AB0 ],
	[ 0x0AB2, 0x0AB3 ],
	[ 0x0AB5, 0x0AB9 ],
	[ 0x0ABD, 0x0ABD ],
	[ 0x0AD0, 0x0AD0 ],
	[ 0x0AE0, 0x0AE1 ],
	[ 0x0B05, 0x0B0C ],
	[ 0x0B0F, 0x0B10 ],
	[ 0x0B13, 0x0B28 ],
	[ 0x0B2A, 0x0B30 ],
	[ 0x0B32, 0x0B33 ],
	[ 0x0B35, 0x0B39 ],
	[ 0x0B3D, 0x0B3D ],
	[ 0x0B5C, 0x0B5D ],
	[ 0x0B5F, 0x0B61 ],
	[ 0x0B71, 0x0B71 ],
	[ 0x0B83, 0x0B83 ],
	[ 0x0B85, 0x0B8A ],
	[ 0x0B8E, 0x0B90 ],
	[ 0x0B92, 0x0B95 ],
	[ 0x0B99, 0x0B9A ],
	[ 0x0B9C, 0x0B9C ],
	[ 0x0B9E, 0x0B9F ],
	[ 0x0BA3, 0x0BA4 ],
	[ 0x0BA8, 0x0BAA ],
	[ 0x0BAE, 0x0BB9 ],
	[ 0x0C05, 0x0C0C ],
	[ 0x0C0E, 0x0C10 ],
	[ 0x0C12, 0x0C28 ],
	[ 0x0C2A, 0x0C33 ],
	[ 0x0C35, 0x0C39 ],
	[ 0x0C60, 0x0C61 ],
	[ 0x0C85, 0x0C8C ],
	[ 0x0C8E, 0x0C90 ],
	[ 0x0C92, 0x0CA8 ],
	[ 0x0CAA, 0x0CB3 ],
	[ 0x0CB5, 0x0CB9 ],
	[ 0x0CBD, 0x0CBD ],
	[ 0x0CDE, 0x0CDE ],
	[ 0x0CE0, 0x0CE1 ],
	[ 0x0D05, 0x0D0C ],
	[ 0x0D0E, 0x0D10 ],
	[ 0x0D12, 0x0D28 ],
	[ 0x0D2A, 0x0D39 ],
	[ 0x0D60, 0x0D61 ],
	[ 0x0D85, 0x0D96 ],
	[ 0x0D9A, 0x0DB1 ],
	[ 0x0DB3, 0x0DBB ],
	[ 0x0DBD, 0x0DBD ],
	[ 0x0DC0, 0x0DC6 ],
	[ 0x0E01, 0x0E30 ],
	[ 0x0E32, 0x0E33 ],
	[ 0x0E40, 0x0E46 ],
	[ 0x0E81, 0x0E82 ],
	[ 0x0E84, 0x0E84 ],
	[ 0x0E87, 0x0E88 ],
	[ 0x0E8A, 0x0E8A ],
	[ 0x0E8D, 0x0E8D ],
	[ 0x0E94, 0x0E97 ],
	[ 0x0E99, 0x0E9F ],
	[ 0x0EA1, 0x0EA3 ],
	[ 0x0EA5, 0x0EA5 ],
	[ 0x0EA7, 0x0EA7 ],
	[ 0x0EAA, 0x0EAB ],
	[ 0x0EAD, 0x0EB0 ],
	[ 0x0EB2, 0x0EB3 ],
	[ 0x0EBD, 0x0EBD ],
	[ 0x0EC0, 0x0EC4 ],
	[ 0x0EC6, 0x0EC6 ],
	[ 0x0EDC, 0x0EDD ],
	[ 0x0F00, 0x0F00 ],
	[ 0x0F40, 0x0F47 ],
	[ 0x0F49, 0x0F6A ],
	[ 0x0F88, 0x0F8B ],
	[ 0x1000, 0x1021 ],
	[ 0x1023, 0x1027 ],
	[ 0x1029, 0x102A ],
	[ 0x1050, 0x1055 ],
	[ 0x10A0, 0x10C5 ],
	[ 0x10D0, 0x10FA ],
	[ 0x10FC, 0x10FC ],
	[ 0x1100, 0x1159 ],
	[ 0x115F, 0x11A2 ],
	[ 0x11A8, 0x11F9 ],
	[ 0x1200, 0x1248 ],
	[ 0x124A, 0x124D ],
	[ 0x1250, 0x1256 ],
	[ 0x1258, 0x1258 ],
	[ 0x125A, 0x125D ],
	[ 0x1260, 0x1288 ],
	[ 0x128A, 0x128D ],
	[ 0x1290, 0x12B0 ],
	[ 0x12B2, 0x12B5 ],
	[ 0x12B8, 0x12BE ],
	[ 0x12C0, 0x12C0 ],
	[ 0x12C2, 0x12C5 ],
	[ 0x12C8, 0x12D6 ],
	[ 0x12D8, 0x1310 ],
	[ 0x1312, 0x1315 ],
	[ 0x1318, 0x135A ],
	[ 0x1380, 0x138F ],
	[ 0x13A0, 0x13F4 ],
	[ 0x1401, 0x166C ],
	[ 0x166F, 0x1676 ],
	[ 0x1681, 0x169A ],
	[ 0x16A0, 0x16EA ],
	[ 0x1700, 0x170C ],
	[ 0x170E, 0x1711 ],
	[ 0x1720, 0x1731 ],
	[ 0x1740, 0x1751 ],
	[ 0x1760, 0x176C ],
	[ 0x176E, 0x1770 ],
	[ 0x1780, 0x17B3 ],
	[ 0x17D7, 0x17D7 ],
	[ 0x17DC, 0x17DC ],
	[ 0x1820, 0x1877 ],
	[ 0x1880, 0x18A8 ],
	[ 0x1900, 0x191C ],
	[ 0x1950, 0x196D ],
	[ 0x1970, 0x1974 ],
	[ 0x1980, 0x19A9 ],
	[ 0x19C1, 0x19C7 ],
	[ 0x1A00, 0x1A16 ],
	[ 0x1B05, 0x1B33 ],
	[ 0x1B45, 0x1B4B ],
	[ 0x1D00, 0x1DBF ],
	[ 0x1E00, 0x1E9B ],
	[ 0x1EA0, 0x1EF9 ],
	[ 0x1F00, 0x1F15 ],
	[ 0x1F18, 0x1F1D ],
	[ 0x1F20, 0x1F45 ],
	[ 0x1F48, 0x1F4D ],
	[ 0x1F50, 0x1F57 ],
	[ 0x1F59, 0x1F59 ],
	[ 0x1F5B, 0x1F5B ],
	[ 0x1F5D, 0x1F5D ],
	[ 0x1F5F, 0x1F7D ],
	[ 0x1F80, 0x1FB4 ],
	[ 0x1FB6, 0x1FBC ],
	[ 0x1FBE, 0x1FBE ],
	[ 0x1FC2, 0x1FC4 ],
	[ 0x1FC6, 0x1FCC ],
	[ 0x1FD0, 0x1FD3 ],
	[ 0x1FD6, 0x1FDB ],
	[ 0x1FE0, 0x1FEC ],
	[ 0x1FF2, 0x1FF4 ],
	[ 0x1FF6, 0x1FFC ],
	[ 0x2071, 0x2071 ],
	[ 0x207F, 0x207F ],
	[ 0x2090, 0x2094 ],
	[ 0x2102, 0x2102 ],
	[ 0x2107, 0x2107 ],
	[ 0x210A, 0x2113 ],
	[ 0x2115, 0x2115 ],
	[ 0x2119, 0x211D ],
	[ 0x2124, 0x2124 ],
	[ 0x2126, 0x2126 ],
	[ 0x2128, 0x2128 ],
	[ 0x212A, 0x212D ],
	[ 0x212F, 0x2139 ],
	[ 0x213C, 0x213F ],
	[ 0x2145, 0x2149 ],
	[ 0x214E, 0x214E ],
	[ 0x2183, 0x2184 ],
	[ 0x2C00, 0x2C2E ],
	[ 0x2C30, 0x2C5E ],
	[ 0x2C60, 0x2C6C ],
	[ 0x2C74, 0x2C77 ],
	[ 0x2C80, 0x2CE4 ],
	[ 0x2D00, 0x2D25 ],
	[ 0x2D30, 0x2D65 ],
	[ 0x2D6F, 0x2D6F ],
	[ 0x2D80, 0x2D96 ],
	[ 0x2DA0, 0x2DA6 ],
	[ 0x2DA8, 0x2DAE ],
	[ 0x2DB0, 0x2DB6 ],
	[ 0x2DB8, 0x2DBE ],
	[ 0x2DC0, 0x2DC6 ],
	[ 0x2DC8, 0x2DCE ],
	[ 0x2DD0, 0x2DD6 ],
	[ 0x2DD8, 0x2DDE ],
	[ 0x3005, 0x3006 ],
	[ 0x3031, 0x3035 ],
	[ 0x303B, 0x303C ],
	[ 0x3041, 0x3096 ],
	[ 0x309D, 0x309F ],
	[ 0x30A1, 0x30FA ],
	[ 0x30FC, 0x30FF ],
	[ 0x3105, 0x312C ],
	[ 0x3131, 0x318E ],
	[ 0x31A0, 0x31B7 ],
	[ 0x31F0, 0x31FF ],
	[ 0x3400, 0x4DB5 ],
	[ 0x4E00, 0x9FBB ],
	[ 0xA000, 0xA48C ],
	[ 0xA717, 0xA71A ],
	[ 0xA800, 0xA801 ],
	[ 0xA803, 0xA805 ],
	[ 0xA807, 0xA80A ],
	[ 0xA80C, 0xA822 ],
	[ 0xA840, 0xA873 ],
	[ 0xAC00, 0xD7A3 ],
	[ 0xF900, 0xFA2D ],
	[ 0xFA30, 0xFA6A ],
	[ 0xFA70, 0xFAD9 ],
	[ 0xFB00, 0xFB06 ],
	[ 0xFB13, 0xFB17 ],
	[ 0xFB1D, 0xFB1D ],
	[ 0xFB1F, 0xFB28 ],
	[ 0xFB2A, 0xFB36 ],
	[ 0xFB38, 0xFB3C ],
	[ 0xFB3E, 0xFB3E ],
	[ 0xFB40, 0xFB41 ],
	[ 0xFB43, 0xFB44 ],
	[ 0xFB46, 0xFBB1 ],
	[ 0xFBD3, 0xFD3D ],
	[ 0xFD50, 0xFD8F ],
	[ 0xFD92, 0xFDC7 ],
	[ 0xFDF0, 0xFDFB ],
	[ 0xFE70, 0xFE74 ],
	[ 0xFE76, 0xFEFC ],
	[ 0xFF21, 0xFF3A ],
	[ 0xFF41, 0xFF5A ],
	[ 0xFF66, 0xFFBE ],
	[ 0xFFC2, 0xFFC7 ],
	[ 0xFFCA, 0xFFCF ],
	[ 0xFFD2, 0xFFD7 ],
	[ 0xFFDA, 0xFFDC ],
	[ 0x10000, 0x1000B ],
	[ 0x1000D, 0x10026 ],
	[ 0x10028, 0x1003A ],
	[ 0x1003C, 0x1003D ],
	[ 0x1003F, 0x1004D ],
	[ 0x10050, 0x1005D ],
	[ 0x10080, 0x100FA ],
	[ 0x10300, 0x1031E ],
	[ 0x10330, 0x10340 ],
	[ 0x10342, 0x10349 ],
	[ 0x10380, 0x1039D ],
	[ 0x103A0, 0x103C3 ],
	[ 0x103C8, 0x103CF ],
	[ 0x10400, 0x1049D ],
	[ 0x10800, 0x10805 ],
	[ 0x10808, 0x10808 ],
	[ 0x1080A, 0x10835 ],
	[ 0x10837, 0x10838 ],
	[ 0x1083C, 0x1083C ],
	[ 0x1083F, 0x1083F ],
	[ 0x10900, 0x10915 ],
	[ 0x10A00, 0x10A00 ],
	[ 0x10A10, 0x10A13 ],
	[ 0x10A15, 0x10A17 ],
	[ 0x10A19, 0x10A33 ],
	[ 0x12000, 0x1236E ],
	[ 0x1D400, 0x1D454 ],
	[ 0x1D456, 0x1D49C ],
	[ 0x1D49E, 0x1D49F ],
	[ 0x1D4A2, 0x1D4A2 ],
	[ 0x1D4A5, 0x1D4A6 ],
	[ 0x1D4A9, 0x1D4AC ],
	[ 0x1D4AE, 0x1D4B9 ],
	[ 0x1D4BB, 0x1D4BB ],
	[ 0x1D4BD, 0x1D4C3 ],
	[ 0x1D4C5, 0x1D505 ],
	[ 0x1D507, 0x1D50A ],
	[ 0x1D50D, 0x1D514 ],
	[ 0x1D516, 0x1D51C ],
	[ 0x1D51E, 0x1D539 ],
	[ 0x1D53B, 0x1D53E ],
	[ 0x1D540, 0x1D544 ],
	[ 0x1D546, 0x1D546 ],
	[ 0x1D54A, 0x1D550 ],
	[ 0x1D552, 0x1D6A5 ],
	[ 0x1D6A8, 0x1D6C0 ],
	[ 0x1D6C2, 0x1D6DA ],
	[ 0x1D6DC, 0x1D6FA ],
	[ 0x1D6FC, 0x1D714 ],
	[ 0x1D716, 0x1D734 ],
	[ 0x1D736, 0x1D74E ],
	[ 0x1D750, 0x1D76E ],
	[ 0x1D770, 0x1D788 ],
	[ 0x1D78A, 0x1D7A8 ],
	[ 0x1D7AA, 0x1D7C2 ],
	[ 0x1D7C4, 0x1D7CB ],
	[ 0x20000, 0x2A6D6 ],
	[ 0x2F800, 0x2FA1D ],
    ];

    debug
    {
	for (int i = 0; i < table.length; i++)
	{
	    assert(table[i][0] <= table[i][1]);
	    if (i < table.length - 1)
	    {
		if (table[i][1] >= table[i + 1][0])
		    printf("table[%d][1] = x%x, table[%d][0] = x%x\n", i, table[i][1], i + 1, table[i + 1][0]);
		assert(table[i][1] < table[i + 1][0]);
	    }
	}
    }

    if (u < 0xAA)
    {
	if (u < 'A')
	    goto Lisnot;
	if (u <= 'Z')
	    goto Lis;
	if (u < 'a')
	    goto Lisnot;
	if (u <= 'z')
	    goto Lis;
	goto Lisnot;
    }

    // Binary search
    uint mid;
    uint low;
    uint high;

    low = 0;
    high = table.length - 1;
    while (cast(int)low <= cast(int)high)
    {
	mid = (low + high) >> 1;
	if (u < table[mid][0])
	    high = mid - 1;
	else if (u > table[mid][1])
	    low = mid + 1;
	else
	    goto Lis;
    }

Lisnot:
    debug
    {
	for (int i = 0; i < table.length; i++)
	{
	    assert(u < table[i][0] || u > table[i][1]);
	}
    }
    return 0;

Lis:
    debug
    {
	for (int i = 0; i < table.length; i++)
	{
	    if (u >= table[i][0] && u <= table[i][1])
		return 1;
	}
	assert(0);		// should have been in table
    }
    return 1;
}

unittest
{
    for (uint i = 0; i < 0x80; i++)
    {
	if (i >= 'A' && i <= 'Z')
	    assert(isUniAlpha(i));
	else if (i >= 'a' && i <= 'z')
	    assert(isUniAlpha(i));
	else
	    assert(!isUniAlpha(i));
    }
}