*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
import java.lang.reflect.*;
class JsonUtil {
- StringBuffer quote(StringBuffer result, String a) {
- result.append("\"");
+ Writer quote(Writer writer, String a) throws IOException {
+ writer.append("\"");
for (int i = 0; i < a.length(); i++) {
char c = a.charAt(i);
switch (c) {
case '"':
case '\\':
- result.append('\\').append(c);
+ writer.append('\\').append(c);
break;
case '\n':
- result.append("\\n");
+ writer.append("\\n");
break;
default:
- result.append(c);
+ writer.append(c);
break;
}
}
- result.append("\"");
- return result;
+ writer.append("\"");
+ return writer;
}
- StringBuffer append(StringBuffer result, AltosJson value, int indent, boolean pretty) {
+ Writer append(Writer result, AltosJson value, int indent, boolean pretty) throws IOException {
value.append(result, indent, pretty);
return result;
}
- StringBuffer append(StringBuffer result, String string) {
+ Writer append(Writer result, String string) throws IOException {
result.append(string);
return result;
}
- StringBuffer indent(StringBuffer result, int indent) {
+ Writer indent(Writer result, int indent) throws IOException {
result.append("\n");
for (int i = 0; i < indent; i++)
result.append("\t");
class JsonHash extends JsonUtil {
Hashtable<String,AltosJson> hash;
- void append_hash(StringBuffer result, int indent, boolean pretty) {
+ void append_hash(Writer result, int indent, boolean pretty) throws IOException {
boolean first = true;
result.append("{");
class JsonArray extends JsonUtil {
ArrayList<AltosJson> array;
- void append_array(StringBuffer result, int indent, boolean pretty) {
+ void append_array(Writer result, int indent, boolean pretty) throws IOException {
boolean first = true;
append(result, "[");
this.sval = sval;
}
- JsonToken(int token, StringBuffer bval) {
+ JsonToken(int token, Writer bval) {
this(token, bval.toString());
}
}
* Lexer for json
*/
class JsonLexer extends JsonUtil {
- StringReader f;
+ Reader f;
int line;
int ungot = -2;
StringBuffer pending_token;
return new JsonToken(JsonToken._long, lval);
}
case '"':
- StringBuffer bval = new StringBuffer();
+ Writer bval = new StringWriter();
for (;;) {
c = ch();
if (c == '"')
break;
}
}
- bval.appendCodePoint(c);
+ bval.write(c);
}
return new JsonToken(JsonToken._string, bval);
default:
line = 1;
token = null;
}
+
+ JsonLexer(Reader f) {
+ this.f = f;
+ line = 1;
+ token = null;
+ }
}
/*
JsonParse(String s) {
lexer = new JsonLexer(s);
}
+
+ JsonParse(Reader f) {
+ lexer = new JsonLexer(f);
+ }
}
public class AltosJson extends JsonUtil {
/* Generate string representation of the value
*/
- StringBuffer append(StringBuffer result, int indent, boolean pretty) {
+ Writer append(Writer result, int indent, boolean pretty) throws IOException {
switch (type) {
case type_hash:
hash.append_hash(result, indent, pretty);
}
private String toString(int indent, boolean pretty) {
- StringBuffer result = new StringBuffer();
- append(result, indent, pretty);
- return result.toString();
+ try {
+ Writer result = new StringWriter();
+ append(result, indent, pretty);
+ return result.toString();
+ } catch (Exception e) {
+ return null;
+ }
}
public String toString() {
return toString(0, true);
}
+ public void write(Writer w, int indent, boolean pretty) throws IOException {
+ append(w, indent, pretty);
+ }
+
+ public void write(Writer w) throws IOException {
+ write(w, 0, true);
+ }
+
/* Parse string representation to a value
*/
}
}
+ public static AltosJson fromReader(Reader f) {
+ JsonParse parse = new JsonParse(f);
+ try {
+ return parse.parse();
+ } catch (IllegalArgumentException ie) {
+ System.out.printf("json:\n%s\n", ie.getMessage());
+ return null;
+ }
+ }
+
/* Accessor functions
*/
private boolean assert_type(boolean setting, int type, int other_type, String error) {
for (Field field : c.getDeclaredFields()) {
String fieldName = field.getName();
+ /* XXX hack to allow fields to be not converted */
+ if (fieldName.startsWith("__"))
+ continue;
+
/* Skip static fields */
if (Modifier.isStatic(field.getModifiers()))
continue;