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charclass.cpp

/**
 * Phoebe DOM Implementation.
 *
 * This is a C++ approximation of the W3C DOM model, which follows
 * fairly closely the specifications in the various .idl files, copies of
 * which are provided for reference.  Most important is this one:
 *
 * http://www.w3.org/TR/2004/REC-DOM-Level-3-Core-20040407/idl-definitions.html
 *
 * Authors:
 *   Bob Jamison
 *
 * Copyright (C) 2005-2008 Bob Jamison
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2.1 of the License, or (at your option) any later version.
 *
 *  This library 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
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

#include "charclass.h"


/**
 * (impl) LetterOrDigit ::=
 *        Letter | Digit
 */
bool isLetterOrDigit(int ch)
{
    if (isLetter(ch))
        return true;
    if (isDigit(ch))
        return true;
    return false;
}

/**
 * (84) Letter ::=
 *        BaseChar | Ideographic
 */
bool isLetter(int ch)
{
    if (isBaseChar(ch))
        return true;
    if (isIdeographic(ch))
        return true;
    return false;
}

/**
 *
 * Following are from unicode.org, in the UnicodeData file
 * in the Unicode Database
 */



/**
 * (85) BaseChar ::=
 */
bool isBaseChar(int ch)
{

    if ( (0x0041 <= ch && ch <= 0x005A) ||
         (0x0061 <= ch && ch <= 0x007A) ||
         (0x00C0 <= ch && ch <= 0x00D6) ||
         (0x00D8 <= ch && ch <= 0x00F6) ||
         (0x00F8 <= ch && ch <= 0x00FF) ||
         (0x0100 <= ch && ch <= 0x0131) ||
         (0x0134 <= ch && ch <= 0x013E) ||
         (0x0141 <= ch && ch <= 0x0148) ||
         (0x014A <= ch && ch <= 0x017E) ||
         (0x0180 <= ch && ch <= 0x01C3) ||
         (0x01CD <= ch && ch <= 0x01F0) ||
         (0x01F4 <= ch && ch <= 0x01F5) ||
         (0x01FA <= ch && ch <= 0x0217) ||
         (0x0250 <= ch && ch <= 0x02A8) ||
         (0x02BB <= ch && ch <= 0x02C1) ||
         ch == 0x0386 ||
         (0x0388 <= ch && ch <= 0x038A) ||
         ch == 0x038C ||
         (0x038E <= ch && ch <= 0x03A1) ||
         (0x03A3 <= ch && ch <= 0x03CE) ||
         (0x03D0 <= ch && ch <= 0x03D6) ||
         ch == 0x03DA ||
         ch == 0x03DC ||
         ch == 0x03DE ||
         ch == 0x03E0 ||
         (0x03E2 <= ch && ch <= 0x03F3) ||
         (0x0401 <= ch && ch <= 0x040C) ||
         (0x040E <= ch && ch <= 0x044F) ||
         (0x0451 <= ch && ch <= 0x045C) ||
         (0x045E <= ch && ch <= 0x0481) ||
         (0x0490 <= ch && ch <= 0x04C4) ||
         (0x04C7 <= ch && ch <= 0x04C8) ||
         (0x04CB <= ch && ch <= 0x04CC) ||
         (0x04D0 <= ch && ch <= 0x04EB) ||
         (0x04EE <= ch && ch <= 0x04F5) ||
         (0x04F8 <= ch && ch <= 0x04F9) ||
         (0x0531 <= ch && ch <= 0x0556) ||
         ch == 0x0559 ||
         (0x0561 <= ch && ch <= 0x0586) ||
         (0x05D0 <= ch && ch <= 0x05EA) ||
         (0x05F0 <= ch && ch <= 0x05F2) ||
         (0x0621 <= ch && ch <= 0x063A) ||
         (0x0641 <= ch && ch <= 0x064A) ||
         (0x0671 <= ch && ch <= 0x06B7) ||
         (0x06BA <= ch && ch <= 0x06BE) ||
         (0x06C0 <= ch && ch <= 0x06CE) ||
         (0x06D0 <= ch && ch <= 0x06D3) ||
         ch == 0x06D5 ||
         (0x06E5 <= ch && ch <= 0x06E6) ||
         (0x0905 <= ch && ch <= 0x0939) ||
         ch == 0x093D ||
         (0x0958 <= ch && ch <= 0x0961) ||
         (0x0985 <= ch && ch <= 0x098C) ||
         (0x098F <= ch && ch <= 0x0990) ||
         (0x0993 <= ch && ch <= 0x09A8) ||
         (0x09AA <= ch && ch <= 0x09B0) ||
         ch == 0x09B2 ||
         (0x09B6 <= ch && ch <= 0x09B9) ||
         (0x09DC <= ch && ch <= 0x09DD) ||
         (0x09DF <= ch && ch <= 0x09E1) ||
         (0x09F0 <= ch && ch <= 0x09F1) ||
         (0x0A05 <= ch && ch <= 0x0A0A) ||
         (0x0A0F <= ch && ch <= 0x0A10) ||
         (0x0A13 <= ch && ch <= 0x0A28) ||
         (0x0A2A <= ch && ch <= 0x0A30) ||
         (0x0A32 <= ch && ch <= 0x0A33) ||
         (0x0A35 <= ch && ch <= 0x0A36) ||
         (0x0A38 <= ch && ch <= 0x0A39) ||
         (0x0A59 <= ch && ch <= 0x0A5C) ||
         ch == 0x0A5E ||
         (0x0A72 <= ch && ch <= 0x0A74) ||
         (0x0A85 <= ch && ch <= 0x0A8B) ||
         ch == 0x0A8D ||
         (0x0A8F <= ch && ch <= 0x0A91) ||
         (0x0A93 <= ch && ch <= 0x0AA8) ||
         (0x0AAA <= ch && ch <= 0x0AB0) ||
         (0x0AB2 <= ch && ch <= 0x0AB3) ||
         (0x0AB5 <= ch && ch <= 0x0AB9) ||
         ch == 0x0ABD ||
         ch == 0x0AE0 ||
         (0x0B05 <= ch && ch <= 0x0B0C) ||
         (0x0B0F <= ch && ch <= 0x0B10) ||
         (0x0B13 <= ch && ch <= 0x0B28) ||
         (0x0B2A <= ch && ch <= 0x0B30) ||
         (0x0B32 <= ch && ch <= 0x0B33) ||
         (0x0B36 <= ch && ch <= 0x0B39) ||
         ch == 0x0B3D ||
         (0x0B5C <= ch && ch <= 0x0B5D) ||
         (0x0B5F <= ch && ch <= 0x0B61) ||
         (0x0B85 <= ch && ch <= 0x0B8A) ||
         (0x0B8E <= ch && ch <= 0x0B90) ||
         (0x0B92 <= ch && ch <= 0x0B95) ||
         (0x0B99 <= ch && ch <= 0x0B9A) ||
         ch == 0x0B9C ||
         (0x0B9E <= ch && ch <= 0x0B9F) ||
         (0x0BA3 <= ch && ch <= 0x0BA4) ||
         (0x0BA8 <= ch && ch <= 0x0BAA) ||
         (0x0BAE <= ch && ch <= 0x0BB5) ||
         (0x0BB7 <= ch && ch <= 0x0BB9) ||
         (0x0C05 <= ch && ch <= 0x0C0C) ||
         (0x0C0E <= ch && ch <= 0x0C10) ||
         (0x0C12 <= ch && ch <= 0x0C28) ||
         (0x0C2A <= ch && ch <= 0x0C33) ||
         (0x0C35 <= ch && ch <= 0x0C39) ||
         (0x0C60 <= ch && ch <= 0x0C61) ||
         (0x0C85 <= ch && ch <= 0x0C8C) ||
         (0x0C8E <= ch && ch <= 0x0C90) ||
         (0x0C92 <= ch && ch <= 0x0CA8) ||
         (0x0CAA <= ch && ch <= 0x0CB3) ||
         (0x0CB5 <= ch && ch <= 0x0CB9) ||
         ch == 0x0CDE ||
         (0x0CE0 <= ch && ch <= 0x0CE1) ||
         (0x0D05 <= ch && ch <= 0x0D0C) ||
         (0x0D0E <= ch && ch <= 0x0D10) ||
         (0x0D12 <= ch && ch <= 0x0D28) ||
         (0x0D2A <= ch && ch <= 0x0D39) ||
         (0x0D60 <= ch && ch <= 0x0D61) ||
         (0x0E01 <= ch && ch <= 0x0E2E) ||
         ch == 0x0E30 ||
         (0x0E32 <= ch && ch <= 0x0E33) ||
         (0x0E40 <= ch && ch <= 0x0E45) ||
         (0x0E81 <= ch && ch <= 0x0E82) ||
         ch == 0x0E84 ||
         (0x0E87 <= ch && ch <= 0x0E88) ||
         ch == 0x0E8A ||
         ch == 0x0E8D ||
         (0x0E94 <= ch && ch <= 0x0E97) ||
         (0x0E99 <= ch && ch <= 0x0E9F) ||
         (0x0EA1 <= ch && ch <= 0x0EA3) ||
         ch == 0x0EA5 ||
         ch == 0x0EA7 ||
         (0x0EAA <= ch && ch <= 0x0EAB) ||
         (0x0EAD <= ch && ch <= 0x0EAE) ||
         ch == 0x0EB0 ||
         (0x0EB2 <= ch && ch <= 0x0EB3) ||
         ch == 0x0EBD ||
         (0x0EC0 <= ch && ch <= 0x0EC4) ||
         (0x0F40 <= ch && ch <= 0x0F47) ||
         (0x0F49 <= ch && ch <= 0x0F69) ||
         (0x10A0 <= ch && ch <= 0x10C5) ||
         (0x10D0 <= ch && ch <= 0x10F6) ||
         ch == 0x1100 ||
         (0x1102 <= ch && ch <= 0x1103) ||
         (0x1105 <= ch && ch <= 0x1107) ||
         ch == 0x1109 ||
         (0x110B <= ch && ch <= 0x110C) ||
         (0x110E <= ch && ch <= 0x1112) ||
         ch == 0x113C ||
         ch == 0x113E ||
         ch == 0x1140 ||
         ch == 0x114C ||
         ch == 0x114E ||
         ch == 0x1150 ||
         (0x1154 <= ch && ch <= 0x1155) ||
         ch == 0x1159 ||
         (0x115F <= ch && ch <= 0x1161) ||
         ch == 0x1163 ||
         ch == 0x1165 ||
         ch == 0x1167 ||
         ch == 0x1169 ||
         (0x116D <= ch && ch <= 0x116E) ||
         (0x1172 <= ch && ch <= 0x1173) ||
         ch == 0x1175 ||
         ch == 0x119E ||
         ch == 0x11A8 ||
         ch == 0x11AB ||
         (0x11AE <= ch && ch <= 0x11AF) ||
         (0x11B7 <= ch && ch <= 0x11B8) ||
         ch == 0x11BA ||
         (0x11BC <= ch && ch <= 0x11C2) ||
         ch == 0x11EB ||
         ch == 0x11F0 ||
         ch == 0x11F9 ||
         (0x1E00 <= ch && ch <= 0x1E9B) ||
         (0x1EA0 <= ch && ch <= 0x1EF9) ||
         (0x1F00 <= ch && ch <= 0x1F15) ||
         (0x1F18 <= ch && ch <= 0x1F1D) ||
         (0x1F20 <= ch && ch <= 0x1F45) ||
         (0x1F48 <= ch && ch <= 0x1F4D) ||
         (0x1F50 <= ch && ch <= 0x1F57) ||
         ch == 0x1F59 ||
         ch == 0x1F5B ||
         ch == 0x1F5D ||
         (0x1F5F <= ch && ch <= 0x1F7D) ||
         (0x1F80 <= ch && ch <= 0x1FB4) ||
         (0x1FB6 <= ch && ch <= 0x1FBC) ||
         ch == 0x1FBE ||
         (0x1FC2 <= ch && ch <= 0x1FC4) ||
         (0x1FC6 <= ch && ch <= 0x1FCC) ||
         (0x1FD0 <= ch && ch <= 0x1FD3) ||
         (0x1FD6 <= ch && ch <= 0x1FDB) ||
         (0x1FE0 <= ch && ch <= 0x1FEC) ||
         (0x1FF2 <= ch && ch <= 0x1FF4) ||
         (0x1FF6 <= ch && ch <= 0x1FFC) ||
         ch == 0x2126 ||
         (0x212A <= ch && ch <= 0x212B) ||
         ch == 0x212E ||
         (0x2180 <= ch && ch <= 0x2182) ||
         (0x3041 <= ch && ch <= 0x3094) ||
         (0x30A1 <= ch && ch <= 0x30FA) ||
         (0x3105 <= ch && ch <= 0x312C) ||
         (0xAC00 <= ch && ch <= 0xD7A3)    )
        return true;
    return false;
}



/**
 * (86)    Ideographic ::=
 */
bool isIdeographic(int ch)
{
    if ( (0x4E00 <= ch && ch <=0x9FA5) ||
          ch == 0x3007 ||
         (0x3021 <= ch && ch <=0x3029)  )
        return true;
    return false;
}

/**
 * (87)    CombiningChar ::=
 */
bool isCombiningChar(int ch)
{
    if ( (0x0300 <= ch && ch <= 0x0345) ||
         (0x0360 <= ch && ch <= 0x0361) ||
         (0x0483 <= ch && ch <= 0x0486) ||
         (0x0591 <= ch && ch <= 0x05A1) ||
         (0x05A3 <= ch && ch <= 0x05B9) ||
         (0x05BB <= ch && ch <= 0x05BD) ||
         ch == 0x05BF ||
         (0x05C1 <= ch && ch <= 0x05C2) ||
         ch == 0x05C4 ||
         (0x064B <= ch && ch <= 0x0652) ||
         ch == 0x0670 ||
         (0x06D6 <= ch && ch <= 0x06DC) ||
         (0x06DD <= ch && ch <= 0x06DF) ||
         (0x06E0 <= ch && ch <= 0x06E4) ||
         (0x06E7 <= ch && ch <= 0x06E8) ||
         (0x06EA <= ch && ch <= 0x06ED) ||
         (0x0901 <= ch && ch <= 0x0903) ||
         ch == 0x093C ||
         (0x093E <= ch && ch <= 0x094C) ||
         ch == 0x094D ||
         (0x0951 <= ch && ch <= 0x0954) ||
         (0x0962 <= ch && ch <= 0x0963) ||
         (0x0981 <= ch && ch <= 0x0983) ||
         ch == 0x09BC ||
         ch == 0x09BE ||
         ch == 0x09BF ||
         (0x09C0 <= ch && ch <= 0x09C4) ||
         (0x09C7 <= ch && ch <= 0x09C8) ||
         (0x09CB <= ch && ch <= 0x09CD) ||
         ch == 0x09D7 ||
         (0x09E2 <= ch && ch <= 0x09E3) ||
         ch == 0x0A02 ||
         ch == 0x0A3C ||
         ch == 0x0A3E ||
         ch == 0x0A3F ||
         (0x0A40 <= ch && ch <= 0x0A42) ||
         (0x0A47 <= ch && ch <= 0x0A48) ||
         (0x0A4B <= ch && ch <= 0x0A4D) ||
         (0x0A70 <= ch && ch <= 0x0A71) ||
         (0x0A81 <= ch && ch <= 0x0A83) ||
         ch == 0x0ABC ||
         (0x0ABE <= ch && ch <= 0x0AC5) ||
         (0x0AC7 <= ch && ch <= 0x0AC9) ||
         (0x0ACB <= ch && ch <= 0x0ACD) ||
         (0x0B01 <= ch && ch <= 0x0B03) ||
         ch == 0x0B3C ||
         (0x0B3E <= ch && ch <= 0x0B43) ||
         (0x0B47 <= ch && ch <= 0x0B48) ||
         (0x0B4B <= ch && ch <= 0x0B4D) ||
         (0x0B56 <= ch && ch <= 0x0B57) ||
         (0x0B82 <= ch && ch <= 0x0B83) ||
         (0x0BBE <= ch && ch <= 0x0BC2) ||
         (0x0BC6 <= ch && ch <= 0x0BC8) ||
         (0x0BCA <= ch && ch <= 0x0BCD) ||
         ch == 0x0BD7 ||
         (0x0C01 <= ch && ch <= 0x0C03) ||
         (0x0C3E <= ch && ch <= 0x0C44) ||
         (0x0C46 <= ch && ch <= 0x0C48) ||
         (0x0C4A <= ch && ch <= 0x0C4D) ||
         (0x0C55 <= ch && ch <= 0x0C56) ||
         (0x0C82 <= ch && ch <= 0x0C83) ||
         (0x0CBE <= ch && ch <= 0x0CC4) ||
         (0x0CC6 <= ch && ch <= 0x0CC8) ||
         (0x0CCA <= ch && ch <= 0x0CCD) ||
         (0x0CD5 <= ch && ch <= 0x0CD6) ||
         (0x0D02 <= ch && ch <= 0x0D03) ||
         (0x0D3E <= ch && ch <= 0x0D43) ||
         (0x0D46 <= ch && ch <= 0x0D48) ||
         (0x0D4A <= ch && ch <= 0x0D4D) ||
         ch == 0x0D57 ||
         ch == 0x0E31 ||
         (0x0E34 <= ch && ch <= 0x0E3A) ||
         (0x0E47 <= ch && ch <= 0x0E4E) ||
         ch == 0x0EB1 ||
         (0x0EB4 <= ch && ch <= 0x0EB9) ||
         (0x0EBB <= ch && ch <= 0x0EBC) ||
         (0x0EC8 <= ch && ch <= 0x0ECD) ||
         (0x0F18 <= ch && ch <= 0x0F19) ||
         ch == 0x0F35 ||
         ch == 0x0F37 ||
         ch == 0x0F39 ||
         ch == 0x0F3E ||
         ch == 0x0F3F ||
         (0x0F71 <= ch && ch <= 0x0F84) ||
         (0x0F86 <= ch && ch <= 0x0F8B) ||
         (0x0F90 <= ch && ch <= 0x0F95) ||
         ch == 0x0F97 ||
         (0x0F99 <= ch && ch <= 0x0FAD) ||
         (0x0FB1 <= ch && ch <= 0x0FB7) ||
         ch == 0x0FB9 ||
         (0x20D0 <= ch && ch <= 0x20DC) ||
         ch == 0x20E1 ||
         (0x302A <= ch && ch <= 0x302F) ||
         ch == 0x3099 ||
         ch == 0x309A      )
        return true;
    return false;
}


/**
 * (88)    Digit ::=
 */
bool isDigit(int ch)
{
    if ( (0x0030 <= ch && ch <= 0x0039) ||
         (0x0660 <= ch && ch <= 0x0669) ||
         (0x06F0 <= ch && ch <= 0x06F9) ||
         (0x0966 <= ch && ch <= 0x096F) ||
         (0x09E6 <= ch && ch <= 0x09EF) ||
         (0x0A66 <= ch && ch <= 0x0A6F) ||
         (0x0AE6 <= ch && ch <= 0x0AEF) ||
         (0x0B66 <= ch && ch <= 0x0B6F) ||
         (0x0BE7 <= ch && ch <= 0x0BEF) ||
         (0x0C66 <= ch && ch <= 0x0C6F) ||
         (0x0CE6 <= ch && ch <= 0x0CEF) ||
         (0x0D66 <= ch && ch <= 0x0D6F) ||
         (0x0E50 <= ch && ch <= 0x0E59) ||
         (0x0ED0 <= ch && ch <= 0x0ED9) ||
         (0x0F20 <= ch && ch <= 0x0F29)   )
        return true;
    return false;
}


/**
 * (89)    Extender ::=
 */
bool isExtender(int ch)
{
    if ( ch == 0x00B7 ||
         ch == 0x02D0 ||
         ch == 0x02D1 ||
         ch == 0x0387 ||
         ch == 0x0640 ||
         ch == 0x0E46 ||
         ch == 0x0EC6 ||
         ch == 0x3005 ||
         (0x3031 <= ch && ch <= 0x3035) ||
         (0x309D <= ch && ch <= 0x309E) ||
         (0x30FC <= ch && ch <= 0x30FE)   )
        return true;
    return false;
}






/**
 * UNICODE general class Zs
 */
bool isSpaceSeparator(int ch)
{
    if (ch == 0x0020 ||
        ch == 0x200A ||
        ch == 0x2003 ||
        ch == 0x205F ||
        ch == 0x2005 ||
        ch == 0x202F ||
        ch == 0x2000 ||
        ch == 0x180E ||
        ch == 0x2001 ||
        ch == 0x2004 ||
        ch == 0x3000 ||
        ch == 0x2008 ||
        ch == 0x2006 ||
        ch == 0x2002 ||
        ch == 0x2007 ||
        ch == 0x2009 ||
        ch == 0x00A0 ||
        ch == 0x1680)
        return true;
    return false;
}

/**
 * UNICODE general class Zl
 */
bool isLineSeparator(int ch)
{
    if (ch == 0x2028)
        return true;
    return false;
}

/**
 * UNICODE general class Zp
 */
bool isParagraphSeparator(int ch)
{
    if (ch == 0x2029)
        return true;
    return false;
}

/**
 * The union of the 3 space types.
 */
bool isSpaceChar(int ch)
{
    if ( isSpaceSeparator(ch) ||
         isLineSeparator(ch)  ||
         isParagraphSeparator(ch))
        return true;
    return false;
}

/**
 * 3 spaces in isSpaceChar() which don't break
 */
bool isNonBreakingSpace(int ch)
{
    if (ch == 0x00A0 || ch == 0x2007 || ch == 0x202F)
        return true;
    return false;
}

/**
 *
 */
bool isWhitespace(int ch)
{
    if (isSpaceChar(ch) && !isNonBreakingSpace(ch))
        return true;
    if (ch == 0x0009 || // HORIZONTAL TABULATION
        ch == 0x000A || // LINE FEED.
        ch == 0x000B || // VERTICAL TABULATION.
        ch == 0x000C || // FORM FEED.
        ch == 0x000D || // CARRIAGE RETURN.
        ch == 0x001C || // FILE SEPARATOR.
        ch == 0x001D || // GROUP SEPARATOR.
        ch == 0x001E || // RECORD SEPARATOR.
        ch == 0x001F)   // UNIT SEPARATOR.
        return true;
    return false;
}












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