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Diffstat (limited to 'jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/XMLStringEncoder.java')
-rw-r--r--jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/XMLStringEncoder.java182
1 files changed, 0 insertions, 182 deletions
diff --git a/jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/XMLStringEncoder.java b/jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/XMLStringEncoder.java
deleted file mode 100644
index fcc359de00..0000000000
--- a/jpa/plugins/org.eclipse.jpt.utility/src/org/eclipse/jpt/utility/internal/XMLStringEncoder.java
+++ /dev/null
@@ -1,182 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2005, 2007 Oracle. All rights reserved.
- * This program and the accompanying materials are made available under the
- * terms of the Eclipse Public License v1.0, which accompanies this distribution
- * and is available at http://www.eclipse.org/legal/epl-v10.html.
- *
- * Contributors:
- * Oracle - initial API and implementation
- ******************************************************************************/
-package org.eclipse.jpt.utility.internal;
-
-import java.io.IOException;
-import java.io.Reader;
-import java.io.StringReader;
-
-/**
- * This encoder will replace any of a specified set of characters with an XML
- * "character reference": '/' => "/"
- */
-public final class XMLStringEncoder {
-
- /** The set of characters to be converted into XML character references. */
- private final char[] chars;
-
- /** Cache the value of the highest character in the set above. */
- private final char maxChar;
-
-
- // ********** constructors/initialization **********
-
- /**
- * Construct an encoder that converts the specified set of characters
- * into XML character references.
- */
- public XMLStringEncoder(char[] chars) {
- super();
- if (chars == null) {
- throw new NullPointerException();
- }
- // the ampersand must be included since it is the escape character
- if (CollectionTools.contains(chars, '&')) {
- this.chars = chars;
- } else {
- this.chars = CollectionTools.add(chars, '&');
- }
- this.maxChar = this.calculateMaxInvalidFileNameChar();
- }
-
- /**
- * Calculate the maximum value of the set of characters to be converted
- * into XML character references. This will be used to short-circuit the
- * search for a character in the set.
- * @see #charIsToBeEncoded(char)
- */
- private char calculateMaxInvalidFileNameChar() {
- char[] localChars = this.chars;
- char max = 0;
- for (int i = localChars.length; i-- > 0; ) {
- char c = localChars[i];
- if (max < c) {
- max = c;
- }
- }
- return max;
- }
-
-
- // ********** API **********
-
- /**
- * Return the specified string with any characters in the set
- * replaced with XML character references.
- */
- public String encode(String s) {
- int len = s.length();
- // allow for a few encoded characters
- StringBuilder sb = new StringBuilder(len + 20);
- for (int i = 0; i < len; i++) {
- this.appendCharacterTo(s.charAt(i), sb);
- }
- return sb.toString();
- }
-
- /**
- * Return the specified string with any XML character references
- * replaced by the characters themselves.
- */
- public String decode(String s) {
- StringBuilder sb = new StringBuilder(s.length());
- StringBuilder temp = new StringBuilder(); // performance tweak
- this.decodeTo(new StringReader(s), sb, temp);
- return sb.toString();
- }
-
-
- // ********** internal methods **********
-
- /**
- * Append the specified character to the string buffer,
- * converting it to an XML character reference if necessary.
- */
- private void appendCharacterTo(char c, StringBuilder sb) {
- if (this.charIsToBeEncoded(c)) {
- this.appendCharacterReferenceTo(c, sb);
- } else {
- sb.append(c);
- }
- }
-
- /**
- * Return whether the specified character is one of the characters
- * to be converted to XML character references.
- */
- private boolean charIsToBeEncoded(char c) {
- return (c <= this.maxChar) && CollectionTools.contains(this.chars, c);
- }
-
- /**
- * Append the specified character's XML character reference to the
- * specified string buffer (e.g. '/' => "&#x2f;").
- */
- private void appendCharacterReferenceTo(char c, StringBuilder sb) {
- sb.append("&#x");
- sb.append(Integer.toString(c, 16));
- sb.append(';');
- }
-
- private void decodeTo(Reader reader, StringBuilder sb, StringBuilder temp) {
- try {
- this.decodeTo_(reader, sb, temp);
- } catch (IOException ex) {
- throw new RuntimeException(ex);
- }
- }
-
- private void decodeTo_(Reader reader, StringBuilder sb, StringBuilder temp) throws IOException {
- int c = reader.read();
- while (c != -1) {
- if (c == '&') {
- this.decodeCharacterReferenceTo(reader, sb, temp);
- } else {
- sb.append((char) c);
- }
- c = reader.read();
- }
- reader.close();
- }
-
- private void decodeCharacterReferenceTo(Reader reader, StringBuilder sb, StringBuilder temp) throws IOException {
- int c = reader.read();
- this.checkChar(c, '#');
- c = reader.read();
- this.checkChar(c, 'x');
-
- temp.setLength(0); // re-use temp
- c = reader.read();
- while (c != ';') {
- this.checkEndOfStream(c);
- temp.append((char) c);
- c = reader.read();
- }
- String charValue = temp.toString();
- if (charValue.length() == 0) {
- throw new IllegalStateException("missing numeric string");
- }
- sb.append((char) Integer.parseInt(charValue, 16));
- }
-
- private void checkChar(int c, int expected) {
- this.checkEndOfStream(c);
- if (c != expected) {
- throw new IllegalStateException("expected '" + (char) expected + "', but encountered '" + (char) c + "'");
- }
- }
-
- private void checkEndOfStream(int c) {
- if (c == -1) {
- throw new IllegalStateException("unexpected end of string");
- }
- }
-
-}

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