| [6380] | 1 | // License: GPL. For details, see LICENSE file.
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| [155] | 2 | package org.openstreetmap.josm.tools;
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| 3 |
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| 4 | import java.io.BufferedReader;
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| 5 | import java.io.IOException;
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| 6 | import java.net.URL;
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| 7 |
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| [1512] | 8 | import org.openstreetmap.josm.Main;
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| [12846] | 9 | import org.openstreetmap.josm.spi.preferences.Config;
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| [5915] | 10 | import org.openstreetmap.josm.tools.LanguageInfo.LocaleType;
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| [1512] | 11 |
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| [155] | 12 | /**
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| 13 | * Read a trac-wiki page.
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| [2512] | 14 | *
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| [155] | 15 | * @author imi
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| 16 | */
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| 17 | public class WikiReader {
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| 18 |
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| [1169] | 19 | private final String baseurl;
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| [155] | 20 |
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| [6642] | 21 | /**
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| 22 | * Constructs a new {@code WikiReader} for the given base URL.
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| 23 | * @param baseurl The wiki base URL
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| 24 | */
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| [1169] | 25 | public WikiReader(String baseurl) {
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| 26 | this.baseurl = baseurl;
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| [155] | 27 | }
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| 28 |
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| [6264] | 29 | /**
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| 30 | * Constructs a new {@code WikiReader}.
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| 31 | */
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| [1512] | 32 | public WikiReader() {
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| [12846] | 33 | this(Config.getPref().get("help.baseurl", Main.getJOSMWebsite()));
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| [1512] | 34 | }
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| 35 |
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| [1169] | 36 | /**
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| [7434] | 37 | * Returns the base URL of wiki.
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| 38 | * @return the base URL of wiki
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| 39 | * @since 7434
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| 40 | */
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| 41 | public final String getBaseUrlWiki() {
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| 42 | return baseurl + "/wiki/";
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| 43 | }
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| 44 |
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| 45 | /**
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| [1169] | 46 | * Read the page specified by the url and return the content.
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| [2512] | 47 | *
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| [7401] | 48 | * If the url is within the baseurl path, parse it as an trac wikipage and replace relative paths etc..
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| 49 | * @param url the URL to read
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| 50 | * @return The page as string
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| [2512] | 51 | *
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| [1169] | 52 | * @throws IOException Throws, if the page could not be loaded.
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| 53 | */
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| 54 | public String read(String url) throws IOException {
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| [5936] | 55 | URL u = new URL(url);
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| [9168] | 56 | try (BufferedReader in = HttpClient.create(u).connect().getContentReader()) {
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| [7401] | 57 | boolean txt = url.endsWith("?format=txt");
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| [7434] | 58 | if (url.startsWith(getBaseUrlWiki()) && !txt)
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| [5936] | 59 | return readFromTrac(in, u);
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| [7401] | 60 | return readNormal(in, !txt);
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| [5834] | 61 | }
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| [1169] | 62 | }
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| [155] | 63 |
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| [7401] | 64 | /**
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| 65 | * Reads the localized version of the given wiki page.
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| 66 | * @param text The page title, without locale prefix
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| 67 | * @return the localized version of the given wiki page
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| 68 | * @throws IOException if any I/O error occurs
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| 69 | */
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| [5061] | 70 | public String readLang(String text) throws IOException {
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| [5915] | 71 | String languageCode;
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| 72 | String res = "";
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| 73 |
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| 74 | languageCode = LanguageInfo.getWikiLanguagePrefix(LocaleType.DEFAULTNOTENGLISH);
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| [8510] | 75 | if (languageCode != null) {
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| [7434] | 76 | res = readLang(new URL(getBaseUrlWiki() + languageCode + text));
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| [1879] | 77 | }
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| [5915] | 78 |
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| [8510] | 79 | if (res.isEmpty()) {
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| [5915] | 80 | languageCode = LanguageInfo.getWikiLanguagePrefix(LocaleType.BASELANGUAGE);
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| [8510] | 81 | if (languageCode != null) {
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| [7434] | 82 | res = readLang(new URL(getBaseUrlWiki() + languageCode + text));
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| [5915] | 83 | }
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| 84 | }
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| 85 |
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| [8510] | 86 | if (res.isEmpty()) {
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| [5915] | 87 | languageCode = LanguageInfo.getWikiLanguagePrefix(LocaleType.ENGLISH);
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| [8510] | 88 | if (languageCode != null) {
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| [7434] | 89 | res = readLang(new URL(getBaseUrlWiki() + languageCode + text));
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| [5915] | 90 | }
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| 91 | }
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| 92 |
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| [8510] | 93 | if (res.isEmpty()) {
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| [5061] | 94 | throw new IOException(text + " does not exist");
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| 95 | } else {
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| 96 | return res;
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| [1512] | 97 | }
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| 98 | }
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| 99 |
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| [5061] | 100 | private String readLang(URL url) throws IOException {
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| [9168] | 101 | try (BufferedReader in = HttpClient.create(url).connect().getContentReader()) {
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| [7033] | 102 | return readFromTrac(in, url);
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| [6642] | 103 | }
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| [5061] | 104 | }
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| 105 |
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| [8870] | 106 | private static String readNormal(BufferedReader in, boolean html) throws IOException {
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| [6264] | 107 | StringBuilder b = new StringBuilder();
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| [1169] | 108 | for (String line = in.readLine(); line != null; line = in.readLine()) {
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| [1879] | 109 | if (!line.contains("[[TranslatedPages]]")) {
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| [8390] | 110 | b.append(line.replaceAll(" />", ">")).append('\n');
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| [1879] | 111 | }
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| [1169] | 112 | }
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| [7401] | 113 | return html ? "<html>" + b + "</html>" : b.toString();
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| [155] | 114 | }
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| 115 |
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| [5936] | 116 | protected String readFromTrac(BufferedReader in, URL url) throws IOException {
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| [155] | 117 | boolean inside = false;
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| [1483] | 118 | boolean transl = false;
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| [4915] | 119 | boolean skip = false;
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| [8849] | 120 | StringBuilder b = new StringBuilder();
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| 121 | StringBuilder full = new StringBuilder();
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| [155] | 122 | for (String line = in.readLine(); line != null; line = in.readLine()) {
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| [8849] | 123 | full.append(line);
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| [1879] | 124 | if (line.contains("<div id=\"searchable\">")) {
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| [1169] | 125 | inside = true;
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| [1879] | 126 | } else if (line.contains("<div class=\"wiki-toc trac-nav\"")) {
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| [1483] | 127 | transl = true;
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| [1879] | 128 | } else if (line.contains("<div class=\"wikipage searchable\">")) {
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| [1426] | 129 | inside = true;
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| [1879] | 130 | } else if (line.contains("<div class=\"buttons\">")) {
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| [1169] | 131 | inside = false;
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| [2257] | 132 | } else if (line.contains("<h3>Attachments</h3>")) {
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| 133 | inside = false;
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| [3569] | 134 | } else if (line.contains("<div id=\"attachments\">")) {
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| 135 | inside = false;
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| 136 | } else if (line.contains("<div class=\"trac-modifiedby\">")) {
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| [4915] | 137 | skip = true;
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| [1879] | 138 | }
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| [4915] | 139 | if (inside && !transl && !skip) {
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| [2274] | 140 | // add a border="0" attribute to images, otherwise the internal help browser
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| 141 | // will render a thick border around images inside an <a> element
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| [8933] | 142 | // remove width information to avoid distorded images (fix #11262)
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| [8849] | 143 | b.append(line.replaceAll("<img ", "<img border=\"0\" ")
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| [8933] | 144 | .replaceAll("width=\"(\\d+)\"", "")
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| [5937] | 145 | .replaceAll("<span class=\"icon\">.</span>", "")
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| [8846] | 146 | .replaceAll("href=\"/", "href=\"" + baseurl + '/')
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| [8849] | 147 | .replaceAll(" />", ">"))
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| 148 | .append('\n');
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| [1879] | 149 | } else if (transl && line.contains("</div>")) {
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| 150 | transl = false;
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| [1169] | 151 | }
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| [4915] | 152 | if (line.contains("</div>")) {
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| 153 | skip = false;
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| 154 | }
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| [155] | 155 | }
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| [3589] | 156 | if (b.indexOf(" Describe ") >= 0
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| 157 | || b.indexOf(" does not exist. You can create it here.</p>") >= 0)
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| [1512] | 158 | return "";
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| [8849] | 159 | if (b.length() == 0)
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| [5937] | 160 | b = full;
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| [5936] | 161 | return "<html><base href=\""+url.toExternalForm() +"\"> " + b + "</html>";
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| [155] | 162 | }
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| 163 | }
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