/**
* Writes the configuration to the given stream, flushing it at the end
*
* @param out Output destination
* @param comments Comments which are added to the beginning of the stream. One comment is written
* on each line, and they are all prefixed with the comment character
*/
public void outputConfiguration(OutputStream out, String... comments) throws IOException {
PrintWriter w = new PrintWriter(out);
if (comments.length > 0) {
for (String comment : comments) w.append("% " + comment + "\n");
w.append("\n");
}
outputConfiguration(w, "");
w.flush();
}
private void outputConfiguration(Appendable str, String pre) throws IOException {
StringBuilder output = MapConfiguration.output.get();
for (String key : config.keySet()) {
Object obj = config.get(key);
if (obj instanceof String)
str.append(pre).append(key).append(' ').append((String) obj).append('\n');
else if (obj instanceof Array) {
// write the type and size hints to output if the array is of a
// native type (will optimize reading the array back in)
String length = Integer.toString(Array.getLength(obj));
if (obj instanceof double[]) {
str.append(pre).append("double ").append(length).append(' ');
} else if (obj instanceof int[]) {
str.append(pre).append("int ").append(length).append(' ');
}
// all arrays have this prefix, regardless of type
str.append(pre).append("array ").append(key).append('\n');
if (obj instanceof double[]) {
double[] array = (double[]) obj;
for (int i = 0; i < array.length; ) {
output.setLength(0);
output.append(pre).append('\t');
for (; i < array.length && output.length() < LINE_LENGTH; i++) {
output.append(array[i]).append(' ');
}
output.append('\n');
str.append(output);
}
} else if (obj instanceof int[]) {
int[] array = (int[]) obj;
for (int i = 0; i < array.length; ) {
output.setLength(0);
output.append(pre).append('\t');
for (; i < array.length && output.length() < LINE_LENGTH; i++) {
output.append(array[i]).append(' ');
}
output.append('\n');
str.append(output);
}
} else { // if (obj instanceof String[]) {
String[] array = (String[]) obj;
for (int i = 0; i < array.length; ) {
output.setLength(0);
output.append(pre).append('\t');
for (; i < array.length && output.length() < LINE_LENGTH; i++) {
output.append(array[i]).append(' ');
}
output.append('\n');
str.append(output);
}
}
str.append(pre).append("end").append('\n');
} else if (obj instanceof Configuration) {
str.append(pre).append("begin ").append(key).append('\n');
MapConfiguration sub = (MapConfiguration) obj;
sub.outputConfiguration(str, pre + '\t');
str.append(pre).append("end").append('\n');
}
}
}