/*
* Copyright 2012 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package com.google.gwt.dev.codeserver;
import com.google.gwt.dev.json.JsonArray;
import com.google.gwt.dev.json.JsonException;
import com.google.gwt.dev.json.JsonObject;
import com.google.gwt.dev.util.Util;
import java.io.File;
import java.io.IOException;
import java.io.StringReader;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
/**
* In-memory representation of a SourceMap.
*/
class SourceMap {
private final JsonObject json;
/**
*@see #load
*/
private SourceMap(JsonObject json) {
this.json = json;
}
static SourceMap load(File file) {
String sourceMapJson = Util.readFileAsString(file);
JsonObject json;
try {
json = JsonObject.parse(new StringReader(sourceMapJson));
} catch (JsonException e) {
throw new RuntimeException("can't parse sourcemap as json", e);
} catch (IOException e) {
throw new RuntimeException("can't parse sourcemap as json", e);
}
return new SourceMap(json);
}
/**
* Returns a sorted list of all the directories containing at least one filename
* in the source map.
*/
List<String> getSourceDirectories() {
JsonArray sources = (JsonArray) json.get("sources");
Set<String> directories = new HashSet<String>();
for (int i = 0; i < sources.getLength(); i++) {
String filename = sources.get(i).asString().getString();
int lastSlashPos = filename.lastIndexOf('/');
directories.add(lastSlashPos < 0 ? "" : filename.substring(0, lastSlashPos));
}
List<String> result = new ArrayList<String>();
result.addAll(directories);
Collections.sort(result);
return result;
}
/**
* Returns a sorted list of all filenames in the given directory.
*/
List<String> getSourceFilesInDirectory(String parent) {
if (!parent.endsWith("/")) {
throw new IllegalArgumentException("unexpected: " + parent);
}
JsonArray sources = (JsonArray) json.get("sources");
List<String> result = new ArrayList<String>();
for (int i = 0; i < sources.getLength(); i++) {
String candidate = sources.get(i).asString().getString();
if (!candidate.startsWith(parent)) {
continue;
}
int nameStart = candidate.lastIndexOf('/') + 1;
if (nameStart == parent.length()) {
result.add(candidate.substring(nameStart));
}
}
return result;
}
}