1 package org.cacert.gigi.output;
3 import java.io.EOFException;
5 import java.io.FileInputStream;
6 import java.io.IOException;
7 import java.io.InputStreamReader;
8 import java.io.PrintWriter;
10 import java.net.URISyntaxException;
12 import java.util.LinkedList;
14 import java.util.regex.Matcher;
15 import java.util.regex.Pattern;
17 import org.cacert.gigi.DevelLauncher;
18 import org.cacert.gigi.Language;
20 public class Template implements Outputable {
21 static class TemplateBlock implements Outputable {
25 public TemplateBlock(String[] contents, Outputable[] vars) {
26 this.contents = contents;
31 public void output(PrintWriter out, Language l, Map<String, Object> vars) {
32 for (int i = 0; i < contents.length; i++) {
33 out.print(contents[i]);
34 if (i < this.vars.length) {
35 this.vars[i].output(out, l, vars);
47 private static final Pattern IF_PATTERN = Pattern.compile(" ?if\\(\\$([^)]+)\\) ?\\{ ?");
49 public Template(URL u) {
51 Reader r = new InputStreamReader(u.openStream(), "UTF-8");
53 if (u.getProtocol().equals("file") && DevelLauncher.DEVEL) {
54 source = new File(u.toURI());
55 lastLoaded = source.lastModified() + 1000;
57 } catch (URISyntaxException e) {
62 } catch (IOException e) {
67 public Template(Reader r) {
71 } catch (IOException e) {
76 private TemplateBlock parse(Reader r) throws IOException {
77 LinkedList<String> splitted = new LinkedList<String>();
78 LinkedList<Outputable> commands = new LinkedList<Outputable>();
79 StringBuffer buf = new StringBuffer();
82 while (!endsWith(buf, "<?")) {
86 buf.append((char) ch);
89 buf.delete(buf.length() - 2, buf.length());
90 splitted.add(buf.toString());
91 buf.delete(0, buf.length());
92 while (!endsWith(buf, "?>")) {
93 buf.append((char) ch);
96 throw new EOFException();
99 buf.delete(buf.length() - 2, buf.length());
100 String com = buf.toString().replace("\n", "");
101 buf.delete(0, buf.length());
102 Matcher m = IF_PATTERN.matcher(com);
104 final String variable = m.group(1);
105 final TemplateBlock body = parse(r);
106 commands.add(new Outputable() {
109 public void output(PrintWriter out, Language l, Map<String, Object> vars) {
110 Object o = vars.get(variable);
111 if (o instanceof Boolean && o == Boolean.TRUE) {
112 body.output(out, l, vars);
118 if (com.matches(" ?\\} ?")) {
121 commands.add(parseCommand(com));
123 splitted.add(buf.toString());
124 String[] contents = splitted.toArray(new String[splitted.size()]);
125 Outputable[] vars = commands.toArray(new Outputable[commands.size()]);
126 return new TemplateBlock(contents, vars);
129 private boolean endsWith(StringBuffer buf, String string) {
130 return buf.length() >= string.length()
131 && buf.substring(buf.length() - string.length(), buf.length()).equals(string);
134 private Outputable parseCommand(String s2) {
135 if (s2.startsWith("=_")) {
136 final String raw = s2.substring(2);
137 return new Outputable() {
140 public void output(PrintWriter out, Language l, Map<String, Object> vars) {
141 out.print(l.getTranslation(raw));
144 } else if (s2.startsWith("=$")) {
145 final String raw = s2.substring(2);
146 return new Outputable() {
149 public void output(PrintWriter out, Language l, Map<String, Object> vars) {
150 outputVar(out, l, vars, raw);
153 } else if (s2.startsWith("=s,")) {
154 String command = s2.substring(3);
155 final LinkedList<String> store = new LinkedList<String>();
156 while (command.startsWith("$")) {
157 int idx = command.indexOf(",");
158 store.add(command.substring(0, idx));
159 command = command.substring(idx + 1);
161 final String text = command;
162 return new Outputable() {
165 public void output(PrintWriter out, Language l, Map<String, Object> vars) {
166 String[] parts = l.getTranslation(text).split("%s");
167 String[] myvars = store.toArray(new String[store.size()]);
169 for (int j = 1; j < parts.length; j++) {
170 outputVar(out, l, vars, myvars[j - 1].substring(1));
176 System.out.println("Unknown processing instruction: " + s2);
181 public void output(PrintWriter out, Language l, Map<String, Object> vars) {
182 if (source != null && DevelLauncher.DEVEL) {
183 if (lastLoaded < source.lastModified()) {
185 System.out.println("Reloading template.... " + source);
186 InputStreamReader r = new InputStreamReader(new FileInputStream(source), "UTF-8");
189 lastLoaded = source.lastModified() + 1000;
190 } catch (IOException e) {
195 data.output(out, l, vars);
198 private void outputVar(PrintWriter out, Language l, Map<String, Object> vars, String varname) {
199 Object s = vars.get(varname);
202 System.out.println("Empty variable: " + varname);
204 if (s instanceof Outputable) {
205 ((Outputable) s).output(out, l, vars);