org.ajoberstar.gradle.git.ghpages.GithubPagesPlugin.groovy Maven / Gradle / Ivy
/*
* Copyright 2012-2015 the original author or authors.
*
* 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 org.ajoberstar.gradle.git.ghpages
import org.ajoberstar.grgit.Grgit
import org.ajoberstar.grgit.operation.ResetOp
import org.ajoberstar.grgit.exception.GrgitException
import org.eclipse.jgit.errors.RepositoryNotFoundException
import org.gradle.api.Plugin
import org.gradle.api.Project
import org.gradle.api.Task
import org.gradle.api.tasks.Copy
/**
* Plugin to enable publishing to gh-pages branch of Github.
* @since 0.1.0
*/
class GithubPagesPlugin implements Plugin {
static final String PREPARE_TASK_NAME = 'prepareGhPages'
static final String PUBLISH_TASK_NAME = 'publishGhPages'
/**
* Applies the plugin to the given project.
* @param project the project
*/
void apply(Project project) {
GithubPagesPluginExtension extension = project.extensions.create('githubPages', GithubPagesPluginExtension, project)
configureTasks(project, extension)
}
/**
* Configures the tasks to publish to gh-pages.
* @param project the project to configure
* @param extension the plugin extension
*/
private void configureTasks(final Project project, final GithubPagesPluginExtension extension) {
Task prepare = createPrepareTask(project, extension)
Task publish = createPublishTask(project, extension)
publish.dependsOn(prepare)
}
private Task createPrepareTask(Project project, GithubPagesPluginExtension extension) {
Task task = project.tasks.create(PREPARE_TASK_NAME, Copy)
task.with {
description = 'Prepare the gh-pages changes locally'
with extension.pages.realSpec
into { extension.workingDir }
doFirst {
def repo = repo(project, extension)
if (extension.deleteExistingFiles) {
def relDestDir = extension.pages.relativeDestinationDir
def targetDir = new File(extension.workingDir, relDestDir)
def filesList = targetDir.list { dir, name -> !name.equals('.git') }
if(filesList) {
def removePatterns = filesList
if(relDestDir && relDestDir != '.') {
removePatterns = filesList.collect {name -> "$relDestDir/$name"}
}
repo.remove(patterns: removePatterns)
}
}
}
doLast {
def repo = repo(project, extension)
repo.with {
add(patterns: ['.'])
if (status().clean) {
project.logger.warn 'Nothing to commit, skipping publish.'
} else {
commit(message: extension.commitMessage)
}
}
}
}
return task
}
private Task createPublishTask(Project project, GithubPagesPluginExtension extension) {
return project.tasks.create(PUBLISH_TASK_NAME) {
description = 'Publishes all gh-pages changes to Github'
group = 'publishing'
// only push if there are commits to push
onlyIf {
def repo = repo(project, extension)
def status = repo.branch.status(name: repo.branch.current)
status.aheadCount > 0
}
doLast {
project.tasks[PREPARE_TASK_NAME].repo.push()
}
}
}
private Grgit repo(Project project, GithubPagesPluginExtension extension) {
if (extension.ext.repo) {
return extension.ext.repo
}
def repo = null
try {
// attempt to reuse existing repository
repo = Grgit.open(dir: extension.workingDir)
if (extension.repoUri == repo.remote.list().find { it.name == 'origin' }?.url &&
repo.branch.current.name == extension.targetBranch) {
repo.clean(directories: true, ignore: false)
repo.fetch()
repo.reset(commit: 'origin/' + extension.targetBranch, mode: ResetOp.Mode.HARD)
}
else {
logger.warn('Found a git repository at workingDir, but it does not match configuration. A fresh clone will be used.')
repo.close()
repo = null
}
} catch (RepositoryNotFoundException ignored) {
// not a git repo
} catch (GrgitException ignored) {
// invalid/corrup git repo
}
if (!repo) {
extension.workingDir.deleteDir()
repo = Grgit.clone(
uri: extension.repoUri,
refToCheckout: extension.targetBranch,
dir: extension.workingDir,
credentials: extension.credentials?.toGrgit()
)
// check if on the correct branch, which implies it doesn't exist
if (repo.branch.current.name != extension.targetBranch) {
repo.checkout(branch: extension.targetBranch, orphan: true)
// need to wipe out the current files
extension.deleteExistingFiles = true
}
}
extension.ext.repo = repo
return repo
}
}