package net.minecraftforge.gradle.tasks.dev;
import groovy.lang.Closure;
import java.io.BufferedWriter;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.nio.charset.Charset;
import net.minecraftforge.gradle.delayed.DelayedFile;
import org.gradle.api.DefaultTask;
import org.gradle.api.tasks.Input;
import org.gradle.api.tasks.TaskAction;
import org.gradle.process.ExecSpec;
import com.google.common.io.Files;
public class SubmoduleChangelogTask extends DefaultTask
{
private DelayedFile submodule;
@Input
private String moduleName;
@Input
private String prefix;
private File outputFile;
@TaskAction
public void doTask() throws IOException
{
getLogger().lifecycle("");
String[] output = runGit(getProject().getProjectDir(), "--no-pager", "diff", "--no-color", "--", getSubmodule().getName());
if (output.length == 0)
{
getLogger().lifecycle("Could not grab submodule changes");
return;
}
String start = null;
String end = null;
for (String line : output)
{
if (line.startsWith("-Subproject commit"))
{
start = line.substring(19);
}
else if (line.startsWith("+Subproject commit"))
{
end = line.substring(19);
if (line.endsWith("-dirty"))
{
end = end.substring(0, end.length() - 6);
}
}
}
if (start == null && end == null)
{
getLogger().lifecycle("Could not extract start and end range");
return;
}
output = runGit(getSubmodule(), "--no-pager", "log", "--reverse", "--pretty=oneline", start + "..." + end);
getLogger().lifecycle("Updated " + getModuleName() + ":");
BufferedWriter writer = Files.newWriter(outputFile, Charset.defaultCharset());
for (String line : output)
{
String out = getPrefix() + "@" + line;
getLogger().lifecycle(out);
writer.write(out);
writer.newLine();
}
writer.flush();
writer.close();
getLogger().lifecycle("");
}
@SuppressWarnings("serial")
private String[] runGit(final File dir, final String... args)
{
final ByteArrayOutputStream out = new ByteArrayOutputStream();
getProject().exec(new Closure<ExecSpec>(getProject(), getProject())
{
@Override
public ExecSpec call()
{
ExecSpec exec = (ExecSpec) getDelegate();
exec.setExecutable("git");
exec.args((Object[]) args);
exec.setStandardOutput(out);
exec.setWorkingDir(dir);
return exec;
}
});
return out.toString().trim().split("\n");
}
public File getSubmodule()
{
return submodule.call();
}
public void setSubmodule(DelayedFile submodule)
{
this.submodule = submodule;
}
public String getModuleName()
{
return moduleName;
}
public void setModuleName(String name)
{
this.moduleName = name;
}
public String getPrefix()
{
return prefix;
}
public void setPrefix(String prefix)
{
this.prefix = prefix;
}
public File getOutputFile()
{
return outputFile;
}
public void setOutputFile(File outputFile)
{
this.outputFile = outputFile;
}
}