| 1 | // License: GPL. Copyright 2007 by Immanuel Scholz and others |
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| 2 | package org.openstreetmap.josm.io; |
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| 3 | |
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| 4 | import java.io.PrintWriter; |
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| 5 | import java.util.HashMap; |
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| 6 | |
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| 7 | /** |
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| 8 | * Helper class to use for xml outputting classes. |
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| 9 | * |
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| 10 | * @author imi |
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| 11 | */ |
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| 12 | public class XmlWriter { |
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| 13 | |
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| 14 | protected PrintWriter out; |
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| 15 | |
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| 16 | public XmlWriter(PrintWriter out) { |
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| 17 | this.out = out; |
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| 18 | } |
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| 19 | |
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| 20 | public void flush() { |
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| 21 | out.flush(); |
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| 22 | } |
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| 23 | |
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| 24 | public static String encode(String unencoded) { |
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| 25 | return encode(unencoded, false); |
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| 26 | } |
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| 27 | |
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| 28 | /** |
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| 29 | * Encode the given string in XML1.0 format. |
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| 30 | * Optimized to fast pass strings that don't need encoding (normal case). |
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| 31 | * |
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| 32 | * @param unencoded the unencoded input string |
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| 33 | * @param keepApos true if apostrophe sign should stay as it is (in order to work around |
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| 34 | * a Java bug that renders |
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| 35 | * new JLabel("<html>'</html>") |
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| 36 | * literally as 6 character string, see #7558) |
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| 37 | */ |
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| 38 | public static String encode(String unencoded, boolean keepApos) { |
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| 39 | StringBuilder buffer = null; |
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| 40 | for (int i = 0; i < unencoded.length(); ++i) { |
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| 41 | String encS = null; |
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| 42 | if (!keepApos || unencoded.charAt(i) != '\'') { |
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| 43 | encS = XmlWriter.encoding.get(unencoded.charAt(i)); |
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| 44 | } |
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| 45 | if (encS != null) { |
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| 46 | if (buffer == null) { |
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| 47 | buffer = new StringBuilder(unencoded.substring(0,i)); |
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| 48 | } |
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| 49 | buffer.append(encS); |
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| 50 | } else if (buffer != null) { |
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| 51 | buffer.append(unencoded.charAt(i)); |
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| 52 | } |
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| 53 | } |
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| 54 | return (buffer == null) ? unencoded : buffer.toString(); |
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| 55 | } |
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| 56 | |
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| 57 | /** |
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| 58 | * The output writer to save the values to. |
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| 59 | */ |
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| 60 | final private static HashMap<Character, String> encoding = new HashMap<Character, String>(); |
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| 61 | static { |
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| 62 | encoding.put('<', "<"); |
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| 63 | encoding.put('>', ">"); |
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| 64 | encoding.put('"', """); |
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| 65 | encoding.put('\'', "'"); |
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| 66 | encoding.put('&', "&"); |
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| 67 | encoding.put('\n', "
"); |
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| 68 | encoding.put('\r', "
"); |
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| 69 | encoding.put('\t', "	"); |
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| 70 | } |
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| 71 | } |
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