io.fabric8.GitHelper Maven / Gradle / Ivy
/**
* Copyright 2005-2015 Red Hat, Inc.
*
* Red Hat 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 io.fabric8;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.StringReader;
import java.util.HashMap;
import java.util.Map;
public class GitHelper {
public static File findGitFolder() {
File baseDir = new File("").getAbsoluteFile();
return findGitFolder(baseDir);
}
private static File findGitFolder(File basedir) {
File gitDir = new File(basedir, ".git");
if (gitDir.exists() && gitDir.isDirectory()) {
return gitDir;
}
File parent = basedir.getParentFile();
if (parent != null) {
return findGitFolder(parent);
} else {
return null;
}
}
/**
* Returns the remote git URL for the given folder; looking for the .git/config file in the current directory or a parent directory
*/
public static String extractGitUrl(File basedir) throws IOException {
if (basedir == null) {
return null;
}
if (basedir.exists() && basedir.isDirectory()) {
File gitConfig = new File(basedir, ".git/config");
if (gitConfig.isFile() && gitConfig.exists()) {
String text = FileHelper.loadText(new FileInputStream(gitConfig));
return extractGitUrl(text);
}
}
File parentFile = basedir.getParentFile();
if (parentFile != null) {
return extractGitUrl(parentFile);
}
return null;
}
/**
* Returns the remote git URL for the given git config file text lets extract the
*/
private static String extractGitUrl(String configText) {
String remote = null;
String lastUrl = null;
String firstUrl = null;
BufferedReader reader = new BufferedReader(new StringReader(configText));
Map remoteUrls = new HashMap<>();
while (true) {
String line = null;
try {
line = reader.readLine();
} catch (IOException e) {
// ignore should never happen!
}
if (line == null) {
break;
}
if (line.startsWith("[remote ")) {
String[] parts = line.split("\"");
if (parts.length > 1) {
remote = parts[1];
}
} else if (line.startsWith("[")) {
remote = null;
} else if (remote != null && line.length() > 0 && Character.isWhitespace(line.charAt(0))) {
String trimmed = line.trim();
if (trimmed.startsWith("url ")) {
String[] parts = trimmed.split("=", 2);
if (parts.length > 1) {
lastUrl = parts[1].trim();
if (firstUrl == null) {
firstUrl = lastUrl;
}
remoteUrls.put(remote, lastUrl);
}
}
}
}
String answer = null;
if (remoteUrls.size() == 1) {
return lastUrl;
} else if (remoteUrls.size() > 1) {
answer = remoteUrls.get("origin");
if (answer == null) {
answer = firstUrl;
}
}
return answer;
}
}