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/*
* Copyright 2011 gitblit.com.
*
* 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.gitblit.build;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.text.MessageFormat;
import java.util.ArrayList;
import java.util.List;
import java.util.Vector;
import com.beust.jcommander.JCommander;
import com.beust.jcommander.Parameter;
import com.beust.jcommander.ParameterException;
import com.beust.jcommander.Parameters;
import com.gitblit.Keys;
import com.gitblit.utils.StringUtils;
/**
* Builds the Gitblit WAR web.xml file by merging the Gitblit GO web.xml file
* with the gitblit.properties comments, settings, and values.
*
* @author James Moger
*
*/
public class BuildWebXml {
private static final String PARAMS = "<!-- PARAMS -->";
private static final String[] STRIP_TOKENS = { "<!-- STRIP", "STRIP -->" };
private static final String COMMENT_PATTERN = "\n\t<!-- {0} -->";
private static final String PARAM_PATTERN = "\n\t<context-param>\n\t\t<param-name>{0}</param-name>\n\t\t<param-value>{1}</param-value>\n\t</context-param>\n";
public static void main(String[] args) throws Exception {
Params params = new Params();
JCommander jc = new JCommander(params);
try {
jc.parse(args);
} catch (ParameterException t) {
System.err.println(t.getMessage());
jc.usage();
}
generateWebXml(params);
}
private static void generateWebXml(Params params) throws Exception {
// Read the current Gitblit properties
BufferedReader propertiesReader = new BufferedReader(new FileReader(new File(
params.propertiesFile)));
Vector<Setting> settings = new Vector<Setting>();
List<String> comments = new ArrayList<String>();
String line = null;
while ((line = propertiesReader.readLine()) != null) {
if (line.length() == 0) {
comments.clear();
} else {
if (line.charAt(0) == '#') {
if (line.length() > 1) {
comments.add(line.substring(1).trim());
}
} else {
String[] kvp = line.split("=", 2);
String key = kvp[0].trim();
if (!skipKey(key)) {
Setting s = new Setting(key, kvp[1].trim(), comments);
settings.add(s);
}
comments.clear();
}
}
}
propertiesReader.close();
StringBuilder parameters = new StringBuilder();
for (Setting setting : settings) {
for (String comment : setting.comments) {
parameters.append(MessageFormat.format(COMMENT_PATTERN, comment));
}
parameters.append(MessageFormat.format(PARAM_PATTERN, setting.name,
StringUtils.escapeForHtml(setting.value, false)));
}
// Read the prototype web.xml file
File webxml = new File(params.sourceFile);
char[] buffer = new char[(int) webxml.length()];
FileReader webxmlReader = new FileReader(webxml);
webxmlReader.read(buffer);
webxmlReader.close();
String webXmlContent = new String(buffer);
// Insert the Gitblit properties into the prototype web.xml
for (String stripToken : STRIP_TOKENS) {
webXmlContent = webXmlContent.replace(stripToken, "");
}
int idx = webXmlContent.indexOf(PARAMS);
StringBuilder sb = new StringBuilder();
sb.append(webXmlContent.substring(0, idx));
sb.append(parameters.toString());
sb.append(webXmlContent.substring(idx + PARAMS.length()));
// Save the merged web.xml to the war build folder
FileOutputStream os = new FileOutputStream(new File(params.destinationFile), false);
os.write(sb.toString().getBytes());
os.close();
}
private static boolean skipKey(String key) {
return key.startsWith(Keys.server._ROOT);
}
/**
* Setting represents a setting and its comments from the properties file.
*/
private static class Setting {
final String name;
final String value;
final List<String> comments;
Setting(String name, String value, List<String> comments) {
this.name = name;
this.value = value;
this.comments = new ArrayList<String>(comments);
}
}
/**
* JCommander Parameters class for BuildWebXml.
*/
@Parameters(separators = " ")
private static class Params {
@Parameter(names = { "--sourceFile" }, description = "Source web.xml file", required = true)
public String sourceFile;
@Parameter(names = { "--propertiesFile" }, description = "Properties settings file", required = true)
public String propertiesFile;
@Parameter(names = { "--destinationFile" }, description = "Destination web.xml file", required = true)
public String destinationFile;
}
}
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