| 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 java.io.BufferedReader;
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| 5 | import java.io.IOException;
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| 6 | import java.io.InputStreamReader;
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| 7 | import java.net.URL;
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| 8 |
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| 9 | /**
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| 10 | * Read a trac-wiki page.
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| 11 | *
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| 12 | * @author imi
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| 13 | */
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| 14 | public class WikiReader {
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| 15 |
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| 16 | public static final String JOSM_EXTERN = "http://josm-extern.";
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| 17 | private final String baseurl;
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| 18 |
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| 19 | public WikiReader(String baseurl) {
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| 20 | this.baseurl = baseurl;
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| 21 | }
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| 22 |
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| 23 | /**
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| 24 | * Read the page specified by the url and return the content.
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| 25 | *
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| 26 | * If the url is within the baseurl path, parse it as an trac wikipage and
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| 27 | * replace relative pathes etc..
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| 28 | *
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| 29 | * @return Either the string of the content of the wiki page.
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| 30 | * @throws IOException Throws, if the page could not be loaded.
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| 31 | */
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| 32 | public String read(String url) throws IOException {
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| 33 | BufferedReader in = new BufferedReader(new InputStreamReader(new URL(url).openStream(), "utf-8"));
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| 34 | if (url.startsWith(baseurl) && !url.endsWith("?format=txt"))
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| 35 | return readFromTrac(in, url);
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| 36 | return readNormal(in);
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| 37 | }
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| 38 |
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| 39 | private String readNormal(BufferedReader in) throws IOException {
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| 40 | StringBuilder b = new StringBuilder("<html>");
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| 41 | for (String line = in.readLine(); line != null; line = in.readLine()) {
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| 42 | line = adjustText(line);
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| 43 | b.append(line);
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| 44 | b.append("\n");
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| 45 | }
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| 46 | return b.toString();
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| 47 | }
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| 48 |
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| 49 | private String readFromTrac(BufferedReader in, String url) throws IOException {
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| 50 | boolean inside = false;
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| 51 | StringBuilder b = new StringBuilder("<html>");
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| 52 | for (String line = in.readLine(); line != null; line = in.readLine()) {
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| 53 | if (line.contains("<div id=\"searchable\">"))
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| 54 | inside = true;
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| 55 | else if (line.contains("<div class=\"wikipage searchable\">"))
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| 56 | inside = true;
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| 57 | else if (line.contains("<div class=\"buttons\">"))
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| 58 | inside = false;
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| 59 | if (inside) {
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| 60 | line = line.replaceAll("<img src=\"/", "<img src=\""+baseurl+"/");
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| 61 | line = line.replaceAll("href=\"/", "href=\""+baseurl+"/");
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| 62 | if (!line.contains("$"))
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| 63 | line = line.replaceAll("<p>Describe \"([^\"]+)\" here</p>", "<p>Describe \"$1\" <a href=\""+JOSM_EXTERN+url.substring(7)+"\">here</a></p>");
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| 64 | line = adjustText(line);
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| 65 | b.append(line);
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| 66 | b.append("\n");
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| 67 | }
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| 68 | }
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| 69 | b.append("</html>");
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| 70 | return b.toString();
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| 71 | }
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| 72 |
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| 73 | private String adjustText(String text) {
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| 74 | text = text.replaceAll(" />", ">");
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| 75 | return text;
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| 76 | }
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| 77 | }
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