public class Template implements Outputable {
+ class ParseResult {
+
+ TemplateBlock block;
+
+ String endType;
+
+ public ParseResult(TemplateBlock block, String endType) {
+ this.block = block;
+ this.endType = endType;
+ }
+
+ public String getEndType() {
+ return endType;
+ }
+
+ public TemplateBlock getBlock(String reqType) {
+ if (endType == null && reqType == null)
+ return block;
+ if (endType == null || reqType == null) {
+ throw new Error("Invalid block type: " + endType);
+ }
+ if (endType.equals(reqType))
+ return block;
+ throw new Error("Invalid block type: " + endType);
+ }
+ }
+
private TemplateBlock data;
private long lastLoaded;
private static final Pattern CONTROL_PATTERN = Pattern.compile(" ?([a-z]+)\\(\\$([^)]+)\\) ?\\{ ?");
+ private static final Pattern ELSE_PATTERN = Pattern.compile(" ?\\} ?else ?\\{ ?");
+
public Template(URL u) {
try {
Reader r = new InputStreamReader(u.openStream(), "UTF-8");
} catch (URISyntaxException e) {
e.printStackTrace();
}
- data = parse(r);
+ data = parse(r).getBlock(null);
r.close();
} catch (IOException e) {
throw new Error(e);
public Template(Reader r) {
try {
- data = parse(r);
+ data = parse(r).getBlock(null);
r.close();
} catch (IOException e) {
throw new Error(e);
}
}
- private TemplateBlock parse(Reader r) throws IOException {
+ private ParseResult parse(Reader r) throws IOException {
LinkedList<String> splitted = new LinkedList<String>();
LinkedList<Outputable> commands = new LinkedList<Outputable>();
StringBuffer buf = new StringBuffer();
+ String blockType = null;
outer:
while (true) {
while ( !endsWith(buf, "<?")) {
if (m.matches()) {
String type = m.group(1);
String variable = m.group(2);
- TemplateBlock body = parse(r);
+ ParseResult body = parse(r);
if (type.equals("if")) {
- commands.add(new IfStatement(variable, body));
+ if ("else".equals(body.getEndType())) {
+ commands.add(new IfStatement(variable, body.getBlock("else"), parse(r).getBlock("}")));
+ } else {
+ commands.add(new IfStatement(variable, body.getBlock("}")));
+ }
} else if (type.equals("foreach")) {
- commands.add(new ForeachStatement(variable, body));
+ commands.add(new ForeachStatement(variable, body.getBlock("}")));
} else {
throw new IOException("Syntax error: unknown control structure: " + type);
}
continue;
- }
- if (com.matches(" ?\\} ?")) {
+ } else if ((m = ELSE_PATTERN.matcher(com)).matches()) {
+ blockType = "else";
+ break;
+ } else if (com.matches(" ?\\} ?")) {
+ blockType = "}";
break;
+ } else {
+ commands.add(parseCommand(com));
}
- commands.add(parseCommand(com));
}
splitted.add(buf.toString());
- String[] contents = splitted.toArray(new String[splitted.size()]);
- Outputable[] vars = commands.toArray(new Outputable[commands.size()]);
- return new TemplateBlock(contents, vars);
+ return new ParseResult(new TemplateBlock(splitted.toArray(new String[splitted.size()]), commands.toArray(new Outputable[commands.size()])), blockType);
}
private boolean endsWith(StringBuffer buf, String string) {
try {
System.out.println("Reloading template.... " + source);
InputStreamReader r = new InputStreamReader(new FileInputStream(source), "UTF-8");
- data = parse(r);
+ data = parse(r).getBlock(null);
r.close();
lastLoaded = source.lastModified() + 1000;
} catch (IOException e) {