a42347b224
characters, for example. Normalization forms NFKD and NFD are supported for the Tibetan Unicode range. I don't like either, actually. I've tested NFKD, but I've not yet committed the tests.
318 lines
13 KiB
Java
318 lines
13 KiB
Java
/*
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The contents of this file are subject to the THDL Open Community License
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Version 1.0 (the "License"); you may not use this file except in compliance
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with the License. You may obtain a copy of the License on the THDL web site
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(http://www.thdl.org/).
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Software distributed under the License is distributed on an "AS IS" basis,
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WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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License for the specific terms governing rights and limitations under the
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License.
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The Initial Developer of this software is the Tibetan and Himalayan Digital
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Library (THDL). Portions created by the THDL are Copyright 2001 THDL.
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All Rights Reserved.
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Contributor(s): ______________________________________.
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*/
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package org.thdl.tib.text.tshegbar;
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import org.thdl.tib.text.TibetanMachineWeb;
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/** This noninstantiable class allows for converting from Unicode
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* codepoints to Extended Wylie. It cannot be used for long
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* stretches of text, though, as it is unaware of context, which is
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* essential to understanding a non-trivial string of Tibetan
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* Unicode.
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*
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* <p>See the document by Nathaniel Garson and David Germano entitled
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* <i>Extended Wylie Transliteration Scheme</i>. Note that there are
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* a couple of issues with the November 18, 2001 revision of that
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* document; these issues are in the Bugs tracker at our SourceForge site.</p>
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*
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* @see <a href="http://sourceforge.net/projects/thdltools">SourceForge site</a>
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*
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* @author David Chandler */
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public class UnicodeCharToExtendedWylie {
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/** Returns the extended Wylie for the very simple sequence x.
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* Returns null iff some (Unicode) char in s has no extended
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* Wylie representation. This is unaware of context, so use it
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* sparingly. */
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public static StringBuffer getExtendedWylieForUnicodeString(String x) {
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StringBuffer sb = new StringBuffer();
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for (int i = 0; i < x.length(); i++) {
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String ew = getExtendedWylieForUnicodeChar(x.charAt(i));
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if (null == ew)
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return null;
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sb.append(ew);
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}
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return sb;
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}
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/** Returns the extended Wylie for x, or null if there is none.
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* Understand that multiple Unicode code points (chars) map to
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* the same Extended Wylie representation. Understand also that
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* the scrap of Extended Wylie returned is only valid in certain
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* contexts. For example, not all consonants take ra-btags. DLC NOW what about canonicalization? */
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public static String getExtendedWylieForUnicodeChar(char x) {
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switch (x) {
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case '\u0F00': return "oM";
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case '\u0F01': return null;
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case '\u0F02': return null;
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case '\u0F03': return null;
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case '\u0F04': return "@";
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case '\u0F05': return "#";
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case '\u0F06': return "$";
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case '\u0F07': return "%";
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case '\u0F08': return "!";
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case '\u0F09': return null;
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case '\u0F0A': return null;
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case '\u0F0B': return " ";
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case '\u0F0C': return "*"; // DLC NOW: Jskad does not support this!
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case '\u0F0D': return "/";
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case '\u0F0E': return "//"; // DLC FIXME: this is kind of a hack-- the Unicode standard says the spacing for this construct is different than the spacing for "\u0F0D\u0F0D"
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case '\u0F0F': return ";";
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case '\u0F10': return "[";
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case '\u0F11': return "|";
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case '\u0F12': return "]";
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case '\u0F13': return "`";
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case '\u0F14': return ":";
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case '\u0F15': return null;
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case '\u0F16': return null;
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case '\u0F17': return null;
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case '\u0F18': return null;
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case '\u0F19': return null;
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case '\u0F1A': return null;
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case '\u0F1B': return null;
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case '\u0F1C': return null;
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case '\u0F1D': return null;
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case '\u0F1E': return null;
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case '\u0F1F': return null;
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case '\u0F20': return "0";
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case '\u0F21': return "1";
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case '\u0F22': return "2";
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case '\u0F23': return "3";
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case '\u0F24': return "4";
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case '\u0F25': return "5";
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case '\u0F26': return "6";
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case '\u0F27': return "7";
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case '\u0F28': return "8";
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case '\u0F29': return "9";
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case '\u0F2A': return null;
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case '\u0F2B': return null;
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case '\u0F2C': return null;
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case '\u0F2D': return null;
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case '\u0F2E': return null;
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case '\u0F2F': return null;
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case '\u0F30': return null;
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case '\u0F31': return null;
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case '\u0F32': return null;
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case '\u0F33': return null;
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case '\u0F34': return "=";
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case '\u0F35': return null;
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case '\u0F36': return null;
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case '\u0F37': return null;
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case '\u0F38': return null;
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case '\u0F39': return null;
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case '\u0F3A': return "<";
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case '\u0F3B': return ">";
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case '\u0F3C': return "(";
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case '\u0F3D': return ")";
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case '\u0F3E': return "{";
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case '\u0F3F': return "}";
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case '\u0F40': return "k";
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case '\u0F41': return "kh";
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case '\u0F42': return "g";
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case '\u0F43': return (getExtendedWylieForUnicodeChar('\u0F42')
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+ TibetanMachineWeb.WYLIE_SANSKRIT_STACKING_KEY // DLC FIXME: is this right?
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+ getExtendedWylieForUnicodeChar('\u0FB7'));
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case '\u0F44': return "ng";
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case '\u0F45': return "c";
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case '\u0F46': return "ch";
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case '\u0F47': return "j";
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case '\u0F48': return null;
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case '\u0F49': return "ny";
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case '\u0F4A': return "T";
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case '\u0F4B': return "Th";
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case '\u0F4C': return "D";
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case '\u0F4D': return (getExtendedWylieForUnicodeChar('\u0F4C')
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+ TibetanMachineWeb.WYLIE_SANSKRIT_STACKING_KEY // DLC FIXME: is this right?
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+ getExtendedWylieForUnicodeChar('\u0FB7'));
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case '\u0F4E': return "N";
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case '\u0F4F': return "t";
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case '\u0F50': return "th";
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case '\u0F51': return "d";
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case '\u0F52': return (getExtendedWylieForUnicodeChar('\u0F51')
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+ TibetanMachineWeb.WYLIE_SANSKRIT_STACKING_KEY // DLC FIXME: is this right?
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+ getExtendedWylieForUnicodeChar('\u0FB7'));
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case '\u0F53': return "n";
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case '\u0F54': return "p";
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case '\u0F55': return "ph";
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case '\u0F56': return "b";
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case '\u0F57': return (getExtendedWylieForUnicodeChar('\u0F56')
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+ TibetanMachineWeb.WYLIE_SANSKRIT_STACKING_KEY // DLC FIXME: is this right?
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+ getExtendedWylieForUnicodeChar('\u0FB7'));
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case '\u0F58': return "m";
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case '\u0F59': return "ts";
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case '\u0F5A': return "tsh";
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case '\u0F5B': return "dz";
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case '\u0F5C': return (getExtendedWylieForUnicodeChar('\u0F5B')
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+ TibetanMachineWeb.WYLIE_SANSKRIT_STACKING_KEY // DLC FIXME: is this right?
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+ getExtendedWylieForUnicodeChar('\u0FB7'));
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case '\u0F5D': return "w";
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case '\u0F5E': return "zh";
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case '\u0F5F': return "z";
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case '\u0F60': return "'";
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case '\u0F61': return "y";
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case '\u0F62': return "r";
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case '\u0F63': return "l";
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case '\u0F64': return "sh";
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case '\u0F65': return "Sh";
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case '\u0F66': return "s";
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case '\u0F67': return "h";
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case '\u0F68': return "a"; // DLC: maybe the empty string is OK here because typing just 'i' into Jskad causes root letter \u0F68 to appear... yuck...
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case '\u0F69': return (getExtendedWylieForUnicodeChar('\u0F40')
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+ TibetanMachineWeb.WYLIE_SANSKRIT_STACKING_KEY // DLC FIXME: is this right?
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+ getExtendedWylieForUnicodeChar('\u0FB5'));
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case '\u0F6A': return "r";
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case '\u0F6B': return null;
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case '\u0F6C': return null;
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case '\u0F6D': return null;
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case '\u0F6E': return null;
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case '\u0F6F': return null;
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case '\u0F70': return null;
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case '\u0F71': return "A";
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case '\u0F72': return "i";
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case '\u0F73': return "I";
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case '\u0F74': return "u";
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case '\u0F75': return "U";
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case '\u0F76': return "r-i"; // DLC Ri or r-i? I put in a bug report.
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case '\u0F77': return "r-I"; // DLC or RI?
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case '\u0F78': return "l-i";
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case '\u0F79': return "l-I";
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case '\u0F7A': return "e";
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case '\u0F7B': return "ai";
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case '\u0F7C': return "o";
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case '\u0F7D': return "au";
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case '\u0F7E': return "M";
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case '\u0F7F': return "H";
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case '\u0F80': return "-i";
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case '\u0F81': return "-I";
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case '\u0F82': return "~^";// DLC unsupported in Jskad
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case '\u0F83': return "~"; // DLC unsupported in Jskad
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case '\u0F84': return "?";
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case '\u0F85': return "&";
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case '\u0F86': return null;
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case '\u0F87': return null;
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case '\u0F88': return null;
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case '\u0F89': return null;
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case '\u0F8A': return null;
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case '\u0F8B': return null;
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case '\u0F8C': return null;
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case '\u0F8D': return null;
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case '\u0F8E': return null;
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case '\u0F8F': return null;
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case '\u0F90': return "k";
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case '\u0F91': return "kh";
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case '\u0F92': return "g";
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case '\u0F93': return (getExtendedWylieForUnicodeChar('\u0F92')
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+ TibetanMachineWeb.WYLIE_SANSKRIT_STACKING_KEY // DLC FIXME: is this right?
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+ getExtendedWylieForUnicodeChar('\u0FB7'));
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case '\u0F94': return "ng";
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case '\u0F95': return "c";
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case '\u0F96': return "ch";
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case '\u0F97': return "j";
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case '\u0F98': return null;
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case '\u0F99': return "ny";
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case '\u0F9A': return "T";
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case '\u0F9B': return "Th";
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case '\u0F9C': return "D";
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case '\u0F9D': return (getExtendedWylieForUnicodeChar('\u0F92')
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+ TibetanMachineWeb.WYLIE_SANSKRIT_STACKING_KEY // DLC FIXME: is this right?
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+ getExtendedWylieForUnicodeChar('\u0FB7'));
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case '\u0F9E': return "N";
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case '\u0F9F': return "t";
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case '\u0FA0': return "th";
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case '\u0FA1': return "d";
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case '\u0FA2': return (getExtendedWylieForUnicodeChar('\u0FA1')
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+ TibetanMachineWeb.WYLIE_SANSKRIT_STACKING_KEY // DLC FIXME: is this right?
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+ getExtendedWylieForUnicodeChar('\u0FB7'));
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case '\u0FA3': return "n";
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case '\u0FA4': return "p";
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case '\u0FA5': return "ph";
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case '\u0FA6': return "b";
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case '\u0FA7': return (getExtendedWylieForUnicodeChar('\u0FA6')
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+ TibetanMachineWeb.WYLIE_SANSKRIT_STACKING_KEY // DLC FIXME: is this right?
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+ getExtendedWylieForUnicodeChar('\u0FB7'));
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case '\u0FA8': return "m";
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case '\u0FA9': return "ts";
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case '\u0FAA': return "tsh";
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case '\u0FAB': return "dz";
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case '\u0FAC': return (getExtendedWylieForUnicodeChar('\u0FAB')
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+ TibetanMachineWeb.WYLIE_SANSKRIT_STACKING_KEY // DLC FIXME: is this right?
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+ getExtendedWylieForUnicodeChar('\u0FB7'));
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case '\u0FAD': return "w";
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case '\u0FAE': return "zh";
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case '\u0FAF': return "z";
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case '\u0FB0': return "'";
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case '\u0FB1': return "y";
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case '\u0FB2': return "r";
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case '\u0FB3': return "l";
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case '\u0FB4': return "sh";
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case '\u0FB5': return "Sh";
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case '\u0FB6': return "s";
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case '\u0FB7': return "h";
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case '\u0FB8': return "a"; // DLC see note on \u0F68 ...
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case '\u0FB9': return (getExtendedWylieForUnicodeChar('\u0F90')
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+ TibetanMachineWeb.WYLIE_SANSKRIT_STACKING_KEY // DLC FIXME: is this right?
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+ getExtendedWylieForUnicodeChar('\u0FB5'));
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case '\u0FBA': return "w";
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case '\u0FBB': return "y";
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case '\u0FBC': return "r";
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case '\u0FBD': return null;
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case '\u0FBE': return null;
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case '\u0FBF': return null;
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case '\u0FC0': return null;
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case '\u0FC1': return null;
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case '\u0FC2': return null;
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case '\u0FC3': return null;
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case '\u0FC4': return null;
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case '\u0FC5': return null;
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case '\u0FC6': return null;
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case '\u0FC7': return null;
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case '\u0FC8': return null;
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case '\u0FC9': return null;
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case '\u0FCA': return null;
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case '\u0FCB': return null;
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case '\u0FCC': return null;
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case '\u0FCD': return null;
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case '\u0FCE': return null;
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case '\u0FCF': return ""; // DLC i added this to the 'EWTS document misspeaks' bug report... null I think...
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default: {
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// DLC handle space (EW's "_")
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// This codepoint is in the range 0FD0-0FFF or is not in
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// the Tibetan range at all. In either case, there is no
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// corresponding Extended Wylie.
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return null;
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}
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} // end switch
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}
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}
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