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Diffstat (limited to 'src/main/java/com/lowagie/text/pdf/hyphenation/Hyphenator.java')
| -rw-r--r-- | src/main/java/com/lowagie/text/pdf/hyphenation/Hyphenator.java | 240 |
1 files changed, 240 insertions, 0 deletions
diff --git a/src/main/java/com/lowagie/text/pdf/hyphenation/Hyphenator.java b/src/main/java/com/lowagie/text/pdf/hyphenation/Hyphenator.java new file mode 100644 index 0000000..bdd34b9 --- /dev/null +++ b/src/main/java/com/lowagie/text/pdf/hyphenation/Hyphenator.java @@ -0,0 +1,240 @@ +/*
+ * Copyright 1999-2004 The Apache Software Foundation.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.lowagie.text.pdf.hyphenation;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.InputStream;
+import java.util.Hashtable;
+
+import com.lowagie.text.pdf.BaseFont;
+
+/**
+ * This class is the main entry point to the hyphenation package.
+ * You can use only the static methods or create an instance.
+ *
+ * @author Carlos Villegas <cav@uniscope.co.jp>
+ */
+public class Hyphenator {
+
+ /** TODO: Don't use statics */
+ private static Hashtable hyphenTrees = new Hashtable();
+
+ private HyphenationTree hyphenTree = null;
+ private int remainCharCount = 2;
+ private int pushCharCount = 2;
+ private static boolean errorDump = false;
+ private static final String defaultHyphLocation = "com/lowagie/text/pdf/hyphenation/hyph/";
+
+ /** Holds value of property hyphenDir. */
+ private static String hyphenDir = "";
+
+ /**
+ * @param lang
+ * @param country
+ * @param leftMin
+ * @param rightMin
+ */
+ public Hyphenator(String lang, String country, int leftMin,
+ int rightMin) {
+ hyphenTree = getHyphenationTree(lang, country);
+ remainCharCount = leftMin;
+ pushCharCount = rightMin;
+ }
+
+ /**
+ * @param lang
+ * @param country
+ * @return the hyphenation tree
+ */
+ public static HyphenationTree getHyphenationTree(String lang,
+ String country) {
+ String key = lang;
+ // check whether the country code has been used
+ if (country != null && !country.equals("none")) {
+ key += "_" + country;
+ }
+ // first try to find it in the cache
+ if (hyphenTrees.containsKey(key)) {
+ return (HyphenationTree)hyphenTrees.get(key);
+ }
+ if (hyphenTrees.containsKey(lang)) {
+ return (HyphenationTree)hyphenTrees.get(lang);
+ }
+
+ HyphenationTree hTree = getResourceHyphenationTree(key);
+ if (hTree == null)
+ hTree = getFileHyphenationTree(key);
+ // put it into the pattern cache
+ if (hTree != null) {
+ hyphenTrees.put(key, hTree);
+ }
+ return hTree;
+ }
+
+ /**
+ * @param key
+ * @return a hyphenation tree
+ */
+ public static HyphenationTree getResourceHyphenationTree(String key) {
+ try {
+ InputStream stream = BaseFont.getResourceStream(defaultHyphLocation + key + ".xml");
+ if (stream == null && key.length() > 2)
+ stream = BaseFont.getResourceStream(defaultHyphLocation + key.substring(0, 2) + ".xml");
+ if (stream == null)
+ return null;
+ HyphenationTree hTree = new HyphenationTree();
+ hTree.loadSimplePatterns(stream);
+ return hTree;
+ }
+ catch (Exception e) {
+ return null;
+ }
+ }
+
+ /**
+ * @param key
+ * @return a hyphenation tree
+ */
+ public static HyphenationTree getFileHyphenationTree(String key) {
+ try {
+ if (hyphenDir == null)
+ return null;
+ InputStream stream = null;
+ File hyphenFile = new File(hyphenDir, key + ".xml");
+ if (hyphenFile.canRead())
+ stream = new FileInputStream(hyphenFile);
+ if (stream == null && key.length() > 2) {
+ hyphenFile = new File(hyphenDir, key.substring(0, 2) + ".xml");
+ if (hyphenFile.canRead())
+ stream = new FileInputStream(hyphenFile);
+ }
+ if (stream == null)
+ return null;
+ HyphenationTree hTree = new HyphenationTree();
+ hTree.loadSimplePatterns(stream);
+ return hTree;
+ }
+ catch (Exception e) {
+ return null;
+ }
+ }
+
+ /**
+ * @param lang
+ * @param country
+ * @param word
+ * @param leftMin
+ * @param rightMin
+ * @return a hyphenation object
+ */
+ public static Hyphenation hyphenate(String lang, String country,
+ String word, int leftMin,
+ int rightMin) {
+ HyphenationTree hTree = getHyphenationTree(lang, country);
+ if (hTree == null) {
+ //log.error("Error building hyphenation tree for language "
+ // + lang);
+ return null;
+ }
+ return hTree.hyphenate(word, leftMin, rightMin);
+ }
+
+ /**
+ * @param lang
+ * @param country
+ * @param word
+ * @param offset
+ * @param len
+ * @param leftMin
+ * @param rightMin
+ * @return a hyphenation object
+ */
+ public static Hyphenation hyphenate(String lang, String country,
+ char[] word, int offset, int len,
+ int leftMin, int rightMin) {
+ HyphenationTree hTree = getHyphenationTree(lang, country);
+ if (hTree == null) {
+ //log.error("Error building hyphenation tree for language "
+ // + lang);
+ return null;
+ }
+ return hTree.hyphenate(word, offset, len, leftMin, rightMin);
+ }
+
+ /**
+ * @param min
+ */
+ public void setMinRemainCharCount(int min) {
+ remainCharCount = min;
+ }
+
+ /**
+ * @param min
+ */
+ public void setMinPushCharCount(int min) {
+ pushCharCount = min;
+ }
+
+ /**
+ * @param lang
+ * @param country
+ */
+ public void setLanguage(String lang, String country) {
+ hyphenTree = getHyphenationTree(lang, country);
+ }
+
+ /**
+ * @param word
+ * @param offset
+ * @param len
+ * @return a hyphenation object
+ */
+ public Hyphenation hyphenate(char[] word, int offset, int len) {
+ if (hyphenTree == null) {
+ return null;
+ }
+ return hyphenTree.hyphenate(word, offset, len, remainCharCount,
+ pushCharCount);
+ }
+
+ /**
+ * @param word
+ * @return a hyphenation object
+ */
+ public Hyphenation hyphenate(String word) {
+ if (hyphenTree == null) {
+ return null;
+ }
+ return hyphenTree.hyphenate(word, remainCharCount, pushCharCount);
+ }
+
+ /** Getter for property hyphenDir.
+ * @return Value of property hyphenDir.
+ */
+ public static String getHyphenDir() {
+ return hyphenDir;
+ }
+
+ /** Setter for property hyphenDir.
+ * @param _hyphenDir New value of property hyphenDir.
+ */
+ public static void setHyphenDir(String _hyphenDir) {
+ hyphenDir = _hyphenDir;
+ }
+
+}
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