1 package org.cacert.gigi.output.template;
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;
19 import org.cacert.gigi.output.Outputable;
21 public class Template implements Outputable {
27 private static final Pattern CONTROL_PATTERN = Pattern.compile(" ?([a-z]+)\\(\\$([^)]+)\\) ?\\{ ?");
29 public Template(URL u) {
31 Reader r = new InputStreamReader(u.openStream(), "UTF-8");
33 if (u.getProtocol().equals("file") && DevelLauncher.DEVEL) {
34 source = new File(u.toURI());
35 lastLoaded = source.lastModified() + 1000;
37 } catch (URISyntaxException e) {
42 } catch (IOException e) {
47 public Template(Reader r) {
51 } catch (IOException e) {
56 private TemplateBlock parse(Reader r) throws IOException {
57 LinkedList<String> splitted = new LinkedList<String>();
58 LinkedList<Outputable> commands = new LinkedList<Outputable>();
59 StringBuffer buf = new StringBuffer();
61 while (!endsWith(buf, "<?")) {
66 buf.append((char) ch);
68 buf.delete(buf.length() - 2, buf.length());
69 splitted.add(buf.toString());
70 buf.delete(0, buf.length());
71 while (!endsWith(buf, "?>")) {
74 throw new EOFException();
76 buf.append((char) ch);
78 buf.delete(buf.length() - 2, buf.length());
79 String com = buf.toString().replace("\n", "");
80 buf.delete(0, buf.length());
81 Matcher m = CONTROL_PATTERN.matcher(com);
83 String type = m.group(1);
84 String variable = m.group(2);
85 TemplateBlock body = parse(r);
86 if (type.equals("if")) {
87 commands.add(new IfStatement(variable, body));
88 } else if (type.equals("foreach")) {
89 commands.add(new ForeachStatement(variable, body));
91 throw new IOException("Syntax error: unknown control structure: " + type);
95 if (com.matches(" ?\\} ?")) {
98 commands.add(parseCommand(com));
100 splitted.add(buf.toString());
101 String[] contents = splitted.toArray(new String[splitted.size()]);
102 Outputable[] vars = commands.toArray(new Outputable[commands.size()]);
103 return new TemplateBlock(contents, vars);
106 private boolean endsWith(StringBuffer buf, String string) {
107 return buf.length() >= string.length()
108 && buf.substring(buf.length() - string.length(), buf.length()).equals(string);
111 private Outputable parseCommand(String s2) {
112 if (s2.startsWith("=_")) {
113 final String raw = s2.substring(2);
114 return new TranslateCommand(raw);
115 } else if (s2.startsWith("=$")) {
116 final String raw = s2.substring(2);
117 return new OutputVariableCommand(raw);
118 } else if (s2.startsWith("=s,")) {
119 String command = s2.substring(3);
120 final LinkedList<String> store = new LinkedList<String>();
121 while (command.startsWith("$")) {
122 int idx = command.indexOf(",");
123 store.add(command.substring(0, idx));
124 command = command.substring(idx + 1);
126 final String text = command;
127 return new SprintfCommand(text, store);
129 System.out.println("Unknown processing instruction: " + s2);
134 public void output(PrintWriter out, Language l, Map<String, Object> vars) {
135 if (source != null && DevelLauncher.DEVEL) {
136 if (lastLoaded < source.lastModified()) {
138 System.out.println("Reloading template.... " + source);
139 InputStreamReader r = new InputStreamReader(new FileInputStream(source), "UTF-8");
142 lastLoaded = source.lastModified() + 1000;
143 } catch (IOException e) {
148 data.output(out, l, vars);
151 protected static void outputVar(PrintWriter out, Language l, Map<String, Object> vars, String varname) {
152 Object s = vars.get(varname);
155 System.out.println("Empty variable: " + varname);
157 if (s instanceof Outputable) {
158 ((Outputable) s).output(out, l, vars);