382 lines
13 KiB
Java
382 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;
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import java.util.*;
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import javax.swing.*;
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import javax.swing.text.*;
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import javax.swing.text.rtf.RTFEditorKit;
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import java.io.*;
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import org.thdl.util.ThdlDebug;
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/** Represents a character meant to be rendered in a certain font.
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* @author David Chandler
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*/
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class CharacterInAGivenFont {
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private char character;
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private String fontName;
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public CharacterInAGivenFont(char ch, String font) {
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character = ch;
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fontName = font;
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}
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public CharacterInAGivenFont(String s, String font) {
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if (s.length() != 1)
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throw new Error("character in a given font was given a string "
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+ s + " in a given font");
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character = s.charAt(0);
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fontName = font;
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}
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public boolean equals(Object x) {
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return ((x instanceof CharacterInAGivenFont)
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&& ((CharacterInAGivenFont)x).character == character
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&& ((CharacterInAGivenFont)x).fontName.equals(fontName));
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}
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public int hashCode() {
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return (int)character + fontName.hashCode();
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}
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public String toString() {
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String characterRepresentation
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= "'" + new Character(character).toString() + "'";
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if ('\n' == character)
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characterRepresentation = "newline";
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if ('\r' == character)
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characterRepresentation = "carriage return";
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return characterRepresentation + " in the font "
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+ ((null == fontName)
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? "_ERROR_FINDING_FONT_"
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: fontName);
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}
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}
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/**
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* A TibetanDocument is a styled document that knows about Tibetan and
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* will respect line breaks and the like. It allows you to insert
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* Tibetan also.
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* @author Edward Garrett, Tibetan and Himalayan Digital Library
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* @version 1.0 */
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public class TibetanDocument extends DefaultStyledDocument {
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private int tibetanFontSize = 36;
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/** Creates a new TibetanDocument with default styles. */
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public TibetanDocument() { super(); }
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/** Do not use this contructor. */
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private TibetanDocument(AbstractDocument.Content c, StyleContext styles ) {
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super(c, styles);
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}
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/**
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* Creates a TibetanDocument.
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* @param styles a StyleContext, which is simply passed on
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* to DefaultStyledDocument's constructor
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*/
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public TibetanDocument(StyleContext styles) {
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super(styles);
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}
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/**
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* Sets the point size used by default for Tibetan text.
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* @param size the point size for Tibetan text
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*/
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public void setTibetanFontSize(int size) {
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tibetanFontSize = size;
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}
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/**
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* Gets the point size for Tibetan text.
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* @return the point size used for Tibetan text
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*/
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public int getTibetanFontSize() {
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return tibetanFontSize;
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}
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/**
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* Writes the document to an OutputStream as Rich Text Format (.rtf).
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* @param out the OutputStream to write to
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*/
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public void writeRTFOutputStream(OutputStream out) throws IOException {
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RTFEditorKit rtf = new RTFEditorKit();
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try {
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rtf.write(out, this, 0, getLength());
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}
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catch (BadLocationException ble) {
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ThdlDebug.noteIffyCode();
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}
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}
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/**
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* Inserts Tibetan text into the document. The font size is applied automatically,
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* according to the current Tibetan font size.
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* @param offset the position at which you want to insert text
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* @param s the string you want to insert
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* @param attr the attributes to apply, normally a particular TibetanMachineWeb font
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* @see #setTibetanFontSize(int size)
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*/
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public void appendDuff(int offset, String s, MutableAttributeSet attr) {
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try {
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StyleConstants.setFontSize(attr, tibetanFontSize);
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insertString(offset, s, attr);
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}
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catch (BadLocationException ble) {
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ThdlDebug.noteIffyCode();
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}
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}
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/**
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* Inserts a stretch of TibetanMachineWeb data into the document.
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* @param glyphs the array of Tibetan data you want to insert
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* @param pos the position at which you want to insert text
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*/
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public int insertDuff(int pos, DuffData[] glyphs) {
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if (glyphs == null)
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return pos;
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MutableAttributeSet mas;
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for (int i=0; i<glyphs.length; i++) {
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mas = TibetanMachineWeb.getAttributeSet(glyphs[i].font);
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appendDuff(pos, glyphs[i].text, mas);
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pos += glyphs[i].text.length();
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}
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return pos;
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}
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/**
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* Converts the entire document into Extended Wylie.
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* If the document consists of both Tibetan and
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* non-Tibetan fonts, however, the conversion stops
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* at the first non-Tibetan font.
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* @return the string of Wylie corresponding to this document
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*/
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public String getWylie() {
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return getWylie(0, getLength());
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}
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/**
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* Converts a portion of the document into Extended Wylie.
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* If the document consists of both Tibetan and
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* non-Tibetan fonts, however, the conversion stops
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* at the first non-Tibetan font.
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* @param begin the beginning of the region to convert
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* @param end the end of the region to convert
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* @return the string of Wylie corresponding to this document
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*/
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public String getWylie(int begin, int end) {
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AttributeSet attr;
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String fontName;
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int fontNum;
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DuffCode dc;
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char ch;
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if (begin >= end)
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return "";
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java.util.List dcs = new ArrayList();
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int i = begin;
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StringBuffer wylieBuffer = new StringBuffer();
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try {
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while (i < end) {
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attr = getCharacterElement(i).getAttributes();
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fontName = StyleConstants.getFontFamily(attr);
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ch = getText(i,1).charAt(0);
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//current character is formatting
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if (ch == '\n' || ch == '\t') {
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if (dcs.size() > 0) {
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DuffCode[] dc_array = new DuffCode[0];
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dc_array = (DuffCode[])dcs.toArray(dc_array);
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wylieBuffer.append(TibTextUtils.getWylie(dc_array));
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dcs.clear();
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}
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wylieBuffer.append(ch);
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}
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//current character isn't TMW
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else if ((0 == (fontNum = TibetanMachineWeb.getTMWFontNumber(fontName)))) {
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if (dcs.size() > 0) {
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DuffCode[] dc_array = new DuffCode[0];
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dc_array = (DuffCode[])dcs.toArray(dc_array);
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wylieBuffer.append(TibTextUtils.getWylie(dc_array));
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dcs.clear();
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}
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}
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//current character is convertable
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else {
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dc = new DuffCode(fontNum, ch);
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dcs.add(dc);
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}
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i++;
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}
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if (dcs.size() > 0) {
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DuffCode[] dc_array = new DuffCode[0];
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dc_array = (DuffCode[])dcs.toArray(dc_array);
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wylieBuffer.append(TibTextUtils.getWylie(dc_array));
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}
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return wylieBuffer.toString();
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}
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catch (BadLocationException ble) {
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ble.printStackTrace();
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ThdlDebug.noteIffyCode();
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}
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return "";
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}
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/** Prints to standard output a list of all the indices of
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characters that are not in a TMW font within the range [start,
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end). Using a negative number for end means that this will
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run to the end of the document. SPEED_FIXME: might be faster
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to run over the elements, if they are one per font.
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@return 1 if at least one non-TMW character was found in
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the specified range, zero if none were, -1 on error. */
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public int findAllNonTMWCharacters(int begin, int end) {
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return findAllNonTMWCharacters(begin, end, System.out);
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}
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/** Configurable so that System.out isn't necessarily used. */
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public int findAllNonTMWCharacters(int begin, int end, PrintStream out) {
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if (end < 0)
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end = getLength();
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if (begin >= end)
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return 0;
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int i = begin;
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int returnValue = 0;
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try {
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while (i < end) {
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AttributeSet attr = getCharacterElement(i).getAttributes();
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String fontName = StyleConstants.getFontFamily(attr);
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if ((0 == TibetanMachineWeb.getTMWFontNumber(fontName))) {
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returnValue = 1;
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CharacterInAGivenFont cgf
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= new CharacterInAGivenFont(getText(i, 1), fontName);
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out.println("non-TMW character "
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+ cgf + " at location " + i);
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}
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i++;
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}
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} catch (BadLocationException ble) {
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ble.printStackTrace(out);
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ThdlDebug.noteIffyCode();
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returnValue = -1;
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}
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return returnValue;
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}
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/** Finds the first occurrence of a non-TMW character in a given
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font and prints it to System.out. If you have a Tahoma
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newline and an Arial newline, the first occurrence of each
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will be reported.
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<p>Works within the range [start, end). Using a negative
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number for end means that this will run to the end of the
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document. SPEED_FIXME: might be faster to run over the
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elements, if they are one per font.
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@return 1 if at least one non-TMW character was found in
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the specified range, zero if none were, -1 on error. */
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public int findSomeNonTMWCharacters(int begin, int end) {
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return findSomeNonTMWCharacters(begin, end, System.out);
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}
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/** Configurable so that System.out isn't necessarily used. */
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public int findSomeNonTMWCharacters(int begin, int end, PrintStream out) {
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if (end < 0)
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end = getLength();
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if (begin >= end)
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return 0;
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int i = begin;
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int returnValue = 0;
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try {
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HashMap cgfTable = new HashMap();
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while (i < end) {
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AttributeSet attr = getCharacterElement(i).getAttributes();
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String fontName = StyleConstants.getFontFamily(attr);
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if ((0 == TibetanMachineWeb.getTMWFontNumber(fontName))) {
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returnValue = 1;
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CharacterInAGivenFont cgf
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= new CharacterInAGivenFont(getText(i, 1), fontName);
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if (!cgfTable.containsKey(cgf)) {
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cgfTable.put(cgf, "yes this character appears once");
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out.println("non-TMW character "
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+ cgf + " appears first at location " + i);
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}
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}
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i++;
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}
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} catch (BadLocationException ble) {
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ble.printStackTrace(out);
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ThdlDebug.noteIffyCode();
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returnValue = -1;
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}
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return returnValue;
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}
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private static final DuffData[] leftCurlyBraceTMW
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= new DuffData[] { new DuffData("{", 1) };
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private static final DuffData[] rightCurlyBraceTMW
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= new DuffData[] { new DuffData("}", 1) };
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private static final DuffData[] backslashTMW
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= new DuffData[] { new DuffData("\\", 2) };
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/** This is a band-aid used to help Jskad fix RTF files that are
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mostly TMW but have some Tahoma characters that should be TMW.
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Replaces '{', '}', and '\\' characters with the correct
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TibetanMachineWeb. Works within the range [start, end).
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Using a negative number for end means that this will run to
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the end of the document. Be sure to set the size for Tibetan
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as you like it before using this. SPEED_FIXME: might be
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faster to run over the elements, if they are one per font. */
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public void replaceTahomaCurlyBracesAndBackslashes(int begin, int end) {
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if (end < 0)
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end = getLength();
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if (begin >= end)
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return;
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int i = begin;
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try {
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while (i < end) {
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AttributeSet attr = getCharacterElement(i).getAttributes();
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String fontName = StyleConstants.getFontFamily(attr);
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if (fontName.equals("Tahoma")) {
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DuffData[] toReplaceWith = null;
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switch (getText(i, 1).charAt(0)) {
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case '{':
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toReplaceWith = leftCurlyBraceTMW;
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break;
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case '}':
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toReplaceWith = rightCurlyBraceTMW;
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break;
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case '\\':
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toReplaceWith = backslashTMW;
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break;
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}
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if (null != toReplaceWith) {
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insertDuff(i, toReplaceWith);
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remove(i+1, 1);
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}
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}
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i++;
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}
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} catch (BadLocationException ble) {
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ble.printStackTrace();
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ThdlDebug.noteIffyCode();
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}
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}
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}
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