/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.waveprotocol.pst;
import com.google.common.collect.Lists;
import com.google.common.io.Files;
import com.google.protobuf.Descriptors.FileDescriptor;
import org.apache.commons.cli.ParseException;
import java.io.File;
import java.util.List;
/**
* Entry point for command line protobuf-stringtemplate.
*
* @author kalman@google.com (Benjamin Kalman)
*/
public final class PstMain {
public static void main(String[] args) {
PstCommandLine cl = null;
try {
cl = new PstCommandLine(args);
} catch (ParseException e) {
System.err.println("Error parsing command line arguments: " + e.getMessage());
PstCommandLine.printHelp();
System.exit(1);
}
if (cl.hasHelp()) {
PstCommandLine.printHelp();
System.exit(0);
}
FileDescriptor fd = PstFileDescriptor.load(
cl.getProtoFile().getPath(),
cl.shouldSaveJava() ? cl.getOutputDir() : Files.createTempDir(),
cl.getProtoPath());
if (fd == null) {
System.err.println("Error: cannot find file descriptor for " + cl.getProtoFile());
System.exit(1);
}
boolean failed = false;
List<File> templates = Lists.newArrayList();
for (File maybeTemplate : cl.getTemplateFiles()) {
if (maybeTemplate.exists()) {
templates.add(maybeTemplate);
} else {
System.err.println("ERROR: template " + maybeTemplate.getPath() + " does not exist.");
failed = true;
}
}
Pst pst = new Pst(cl.getOutputDir(), fd, cl.getStyler(), templates, cl.shouldSavePreStyled(),
cl.shouldUseInt52());
try {
pst.run();
} catch (PstException e) {
System.err.printf("ERROR: generation failed for %d/%d templates:\n",
e.getTemplateExceptions().size(), templates.size());
for (PstException.TemplateException te : e.getTemplateExceptions()) {
System.err.println('\n' + te.getTemplateName() + " failed:");
te.printStackTrace(System.err);
}
failed = true;
}
if (failed) {
System.exit(1);
}
}
}