97 lines
2.7 KiB
Java
97 lines
2.7 KiB
Java
package net.osmand;
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import org.apache.commons.logging.Log;
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import com.ibm.icu.text.ArabicShaping;
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import com.ibm.icu.text.ArabicShapingException;
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import com.ibm.icu.text.Bidi;
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import com.ibm.icu.text.BidiRun;
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public class Reshaper {
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private final static Log LOG = PlatformUtil.getLog(Reshaper.class);
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public static String reshape(String s) {
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// if(true) {
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// return s;
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// }
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try {
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ArabicShaping as = new ArabicShaping(ArabicShaping.LETTERS_SHAPE | ArabicShaping.LENGTH_GROW_SHRINK);
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try {
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s = as.shape(s);
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} catch (ArabicShapingException e) {
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LOG.error(e.getMessage(), e);
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}
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Bidi line = new Bidi(s.length(), s.length());
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line.setPara(s, Bidi.LEVEL_DEFAULT_LTR, null);
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byte direction = line.getDirection();
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if (direction != Bidi.MIXED) {
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// unidirectional
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if(line.isLeftToRight()) {
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return s;
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} else {
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char[] chs = new char[s.length()];
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for(int i = 0; i< chs.length ; i++) {
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chs[i] = s.charAt(chs.length - i - 1);
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}
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return new String(chs);
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}
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} else {
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// // mixed-directional
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int count = line.countRuns();
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// if (styleRunCount <= 1) {
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// int style = styleRuns[0].style;
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// // iterate over directional runs
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// for (i = 0; i < count; ++i) {
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// run = line.getVisualRun(i);
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// renderRun(text, run.getStart(), run.getLimit(),
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// run.getDirection(), style);
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// }
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// }
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StringBuilder res = new StringBuilder();
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// iterate over both directional and style runs
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for (int i = 0; i < count; ++i) {
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BidiRun run = line.getVisualRun(i);
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int st = run.getStart();
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int e = run.getLimit();
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int j = run.getDirection() == Bidi.LTR ? st : e - 1;
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int l = run.getDirection() == Bidi.LTR ? e : st - 1;
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boolean plus = run.getDirection() == Bidi.LTR;
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while (j != l) {
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res.append(s.charAt(j));
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if (plus) {
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j++;
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} else {
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j--;
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}
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}
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}
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return res.toString();
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}
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} catch (RuntimeException e) {
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LOG.error(e.getMessage(), e);
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return s;
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}
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}
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public static void main(String[] args) {
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// char[] c = new char[] {'א', 'ד','ם', ' ', '1', '2'} ;
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// String reshape = "אדם";
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char[] c = new char[] {'א', 'ד','ם'} ;
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String reshape = reshape(new String(c));
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for(int i=0; i < reshape.length(); i++) {
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System.out.println(reshape.charAt(i));
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}
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test2();
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}
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private static void test2() {
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String s = "گچ پژ نمکی باللغة العربي";
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String reshape = reshape(s);
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if (!reshape.equals("ﻲﺑﺮﻌﻟﺍ ﺔﻐﻠﻟﺎﺑ ﯽﮑﻤﻧ ﮋﭘ ﭻﮔ")) {
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throw new IllegalArgumentException("BUG!!!");
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}
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}
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}
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