| 1 | // License: GPL. Copyright 2007 by Immanuel Scholz and others
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| 2 | package org.openstreetmap.josm.tools;
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| 3 |
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| 4 | import static org.openstreetmap.josm.tools.I18n.tr;
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| 5 |
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| 6 | import java.io.BufferedReader;
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| 7 | import java.io.IOException;
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| 8 | import java.io.InputStream;
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| 9 | import java.io.InputStreamReader;
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| 10 | import java.net.URL;
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| 11 |
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| 12 | import org.openstreetmap.josm.Main;
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| 13 |
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| 14 | /**
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| 15 | * Read a trac-wiki page.
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| 16 | *
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| 17 | * @author imi
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| 18 | */
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| 19 | public class WikiReader {
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| 20 |
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| 21 | private final String baseurl;
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| 22 |
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| 23 | public WikiReader(String baseurl) {
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| 24 | this.baseurl = baseurl;
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| 25 | }
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| 26 |
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| 27 | public WikiReader() {
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| 28 | this.baseurl = Main.pref.get("help.baseurl", "http://josm.openstreetmap.de");
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| 29 | }
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| 30 |
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| 31 | /**
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| 32 | * Read the page specified by the url and return the content.
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| 33 | *
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| 34 | * If the url is within the baseurl path, parse it as an trac wikipage and replace relative
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| 35 | * pathes etc..
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| 36 | *
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| 37 | * @return
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| 38 | * @throws IOException Throws, if the page could not be loaded.
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| 39 | */
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| 40 | public String read(String url) throws IOException {
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| 41 | BufferedReader in = new BufferedReader(new InputStreamReader(new URL(url).openStream(), "utf-8"));
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| 42 | if (url.startsWith(baseurl) && !url.endsWith("?format=txt"))
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| 43 | return readFromTrac(in);
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| 44 | return readNormal(in);
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| 45 | }
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| 46 |
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| 47 | public String readLang(String text) {
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| 48 | String languageCode = LanguageInfo.getWikiLanguagePrefix();
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| 49 | String url = baseurl + "/wiki/" + languageCode + text;
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| 50 | String res = "";
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| 51 | InputStream in = null;
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| 52 | try {
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| 53 | in = new URL(url).openStream();
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| 54 | res = readFromTrac(new BufferedReader(new InputStreamReader(in, "utf-8")));
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| 55 | } catch (IOException ioe) {
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| 56 | System.out.println(tr("Warning: failed to read MOTD from ''{0}''. Exception was: {1}", url, ioe
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| 57 | .toString()));
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| 58 | } catch(SecurityException e) {
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| 59 | System.out.println(tr(
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| 60 | "Warning: failed to read MOTD from ''{0}'' for security reasons. Exception was: {1}", url, e
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| 61 | .toString()));
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| 62 | } finally {
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| 63 | if (in != null) {
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| 64 | try {
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| 65 | in.close();
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| 66 | } catch (IOException e) {
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| 67 | }
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| 68 | }
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| 69 | }
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| 70 | if (res.length() == 0 && languageCode.length() != 0) {
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| 71 | url = baseurl + "/wiki/" + text;
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| 72 | try {
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| 73 | in = new URL(url).openStream();
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| 74 | } catch (IOException e) {
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| 75 | System.out.println(tr("Warning: failed to read MOTD from ''{0}''. Exception was: {1}", url, e
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| 76 | .toString()));
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| 77 | return res;
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| 78 | } catch (SecurityException e) {
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| 79 | System.out.println(tr(
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| 80 | "Warning: failed to read MOTD from ''{0}'' for security reasons. Exception was: {1}", url, e
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| 81 | .toString()));
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| 82 | return res;
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| 83 | }
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| 84 | try {
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| 85 | res = readFromTrac(new BufferedReader(new InputStreamReader(in, "utf-8")));
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| 86 | } catch (IOException ioe) {
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| 87 | System.out.println(tr("Warning: failed to read MOTD from ''{0}''. Exception was: {1}", url, ioe
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| 88 | .toString()));
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| 89 | return res;
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| 90 | } finally {
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| 91 | if (in != null) {
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| 92 | try {
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| 93 | in.close();
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| 94 | } catch (IOException e) {
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| 95 | }
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| 96 | }
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| 97 | }
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| 98 | }
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| 99 | return res;
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| 100 | }
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| 101 |
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| 102 | private String readNormal(BufferedReader in) throws IOException {
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| 103 | String b = "";
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| 104 | for (String line = in.readLine(); line != null; line = in.readLine()) {
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| 105 | if (!line.contains("[[TranslatedPages]]")) {
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| 106 | b += line.replaceAll(" />", ">") + "\n";
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| 107 | }
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| 108 | }
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| 109 | return "<html>" + b + "</html>";
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| 110 | }
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| 111 |
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| 112 | private String readFromTrac(BufferedReader in) throws IOException {
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| 113 | boolean inside = false;
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| 114 | boolean transl = false;
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| 115 | String b = "";
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| 116 | for (String line = in.readLine(); line != null; line = in.readLine()) {
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| 117 | if (line.contains("<div id=\"searchable\">")) {
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| 118 | inside = true;
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| 119 | } else if (line.contains("<div class=\"wiki-toc trac-nav\"")) {
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| 120 | transl = true;
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| 121 | } else if (line.contains("<div class=\"wikipage searchable\">")) {
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| 122 | inside = true;
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| 123 | } else if (line.contains("<div class=\"buttons\">")) {
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| 124 | inside = false;
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| 125 | } else if (line.contains("<h3>Attachments</h3>")) {
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| 126 | inside = false;
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| 127 | } else if (line.contains("<div id=\"attachments\">")) {
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| 128 | inside = false;
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| 129 | } else if (line.contains("<div class=\"trac-modifiedby\">")) {
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| 130 | continue;
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| 131 | }
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| 132 | if (inside && !transl) {
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| 133 | // add a border="0" attribute to images, otherwise the internal help browser
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| 134 | // will render a thick border around images inside an <a> element
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| 135 | //
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| 136 | b += line.replaceAll("<img src=\"/", "<img border=\"0\" src=\"" + baseurl + "/").replaceAll("href=\"/",
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| 137 | "href=\"" + baseurl + "/").replaceAll(" />", ">")
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| 138 | + "\n";
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| 139 | } else if (transl && line.contains("</div>")) {
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| 140 | transl = false;
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| 141 | }
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| 142 | }
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| 143 | if (b.indexOf(" Describe ") >= 0
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| 144 | || b.indexOf(" does not exist. You can create it here.</p>") >= 0)
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| 145 | return "";
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| 146 | return "<html>" + b + "</html>";
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| 147 | }
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| 148 | }
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