push plugin

4 files changed, 616 insertions, 0 deletions

diff --git a/StoneIsland/platforms/android/cordova/lib/builders/AntBuilder.js b/StoneIsland/platforms/android/cordova/lib/builders/AntBuilder.js
new file mode 100644
index 00000000..4e0f71ab
--- /dev/null
+++ b/StoneIsland/platforms/android/cordova/lib/builders/AntBuilder.js
@@ -0,0 +1,156 @@
+/*
+       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.
+*/
+
+var Q = require('q');
+var fs = require('fs');
+var path = require('path');
+var util = require('util');
+var shell = require('shelljs');
+var spawn = require('cordova-common').superspawn.spawn;
+var CordovaError = require('cordova-common').CordovaError;
+var check_reqs = require('../check_reqs');
+
+var SIGNING_PROPERTIES = '-signing.properties';
+var MARKER = 'YOUR CHANGES WILL BE ERASED!';
+var TEMPLATE =
+    '# This file is automatically generated.\n' +
+    '# Do not modify this file -- ' + MARKER + '\n';
+
+var GenericBuilder = require('./GenericBuilder');
+
+function AntBuilder (projectRoot) {
+    GenericBuilder.call(this, projectRoot);
+
+    this.binDirs = {ant: this.binDirs.ant};
+}
+
+util.inherits(AntBuilder, GenericBuilder);
+
+AntBuilder.prototype.getArgs = function(cmd, opts) {
+    var args = [cmd, '-f', path.join(this.root, 'build.xml')];
+    // custom_rules.xml is required for incremental builds.
+    if (hasCustomRules(this.root)) {
+        args.push('-Dout.dir=ant-build', '-Dgen.absolute.dir=ant-gen');
+    }
+    if(opts.packageInfo) {
+        args.push('-propertyfile=' + path.join(this.root, opts.buildType + SIGNING_PROPERTIES));
+    }
+    return args;
+};
+
+AntBuilder.prototype.prepEnv = function(opts) {
+    var self = this;
+    return check_reqs.check_ant()
+    .then(function() {
+        // Copy in build.xml on each build so that:
+        // A) we don't require the Android SDK at project creation time, and
+        // B) we always use the SDK's latest version of it.
+        /*jshint -W069 */
+        var sdkDir = process.env['ANDROID_HOME'];
+        /*jshint +W069 */
+        var buildTemplate = fs.readFileSync(path.join(sdkDir, 'tools', 'lib', 'build.template'), 'utf8');
+        function writeBuildXml(projectPath) {
+            var newData = buildTemplate.replace('PROJECT_NAME', self.extractRealProjectNameFromManifest());
+            fs.writeFileSync(path.join(projectPath, 'build.xml'), newData);
+            if (!fs.existsSync(path.join(projectPath, 'local.properties'))) {
+                fs.writeFileSync(path.join(projectPath, 'local.properties'), TEMPLATE);
+            }
+        }
+        writeBuildXml(self.root);
+        var propertiesObj = self.readProjectProperties();
+        var subProjects = propertiesObj.libs;
+        for (var i = 0; i < subProjects.length; ++i) {
+            writeBuildXml(path.join(self.root, subProjects[i]));
+        }
+        if (propertiesObj.systemLibs.length > 0) {
+            throw new CordovaError('Project contains at least one plugin that requires a system library. This is not supported with ANT. Use gradle instead.');
+        }
+
+        var propertiesFile = opts.buildType + SIGNING_PROPERTIES;
+        var propertiesFilePath = path.join(self.root, propertiesFile);
+        if (opts.packageInfo) {
+            fs.writeFileSync(propertiesFilePath, TEMPLATE + opts.packageInfo.toProperties());
+        } else if(isAutoGenerated(propertiesFilePath)) {
+            shell.rm('-f', propertiesFilePath);
+        }
+    });
+};
+
+/*
+ * Builds the project with ant.
+ * Returns a promise.
+ */
+AntBuilder.prototype.build = function(opts) {
+    // Without our custom_rules.xml, we need to clean before building.
+    var ret = Q();
+    if (!hasCustomRules(this.root)) {
+        // clean will call check_ant() for us.
+        ret = this.clean(opts);
+    }
+
+    var args = this.getArgs(opts.buildType == 'debug' ? 'debug' : 'release', opts);
+    return check_reqs.check_ant()
+    .then(function() {
+        return spawn('ant', args, {stdio: 'pipe'});
+    }).progress(function (stdio){
+        if (stdio.stderr) {
+            process.stderr.write(stdio.stderr);
+        } else {
+            process.stdout.write(stdio.stdout);
+        }
+    }).catch(function (error) {
+        if (error.toString().indexOf('Unable to resolve project target') >= 0) {
+            return check_reqs.check_android_target(error).then(function() {
+                // If due to some odd reason - check_android_target succeeds
+                // we should still fail here.
+                return Q.reject(error);
+            });
+        }
+        return Q.reject(error);
+    });
+};
+
+AntBuilder.prototype.clean = function(opts) {
+    var args = this.getArgs('clean', opts);
+    var self = this;
+    return check_reqs.check_ant()
+    .then(function() {
+        return spawn('ant', args, {stdio: 'inherit'});
+    })
+    .then(function () {
+        shell.rm('-rf', path.join(self.root, 'out'));
+
+        ['debug', 'release'].forEach(function(config) {
+            var propertiesFilePath = path.join(self.root, config + SIGNING_PROPERTIES);
+            if(isAutoGenerated(propertiesFilePath)){
+                shell.rm('-f', propertiesFilePath);
+            }
+        });
+    });
+};
+
+module.exports = AntBuilder;
+
+function hasCustomRules(projectRoot) {
+    return fs.existsSync(path.join(projectRoot, 'custom_rules.xml'));
+}
+
+function isAutoGenerated(file) {
+    return fs.existsSync(file) && fs.readFileSync(file, 'utf8').indexOf(MARKER) > 0;
+}
diff --git a/StoneIsland/platforms/android/cordova/lib/builders/GenericBuilder.js b/StoneIsland/platforms/android/cordova/lib/builders/GenericBuilder.js
new file mode 100644
index 00000000..362da431
--- /dev/null
+++ b/StoneIsland/platforms/android/cordova/lib/builders/GenericBuilder.js
@@ -0,0 +1,147 @@
+/*
+       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.
+*/
+
+var Q = require('q');
+var fs = require('fs');
+var path = require('path');
+var shell = require('shelljs');
+var events = require('cordova-common').events;
+var CordovaError = require('cordova-common').CordovaError;
+
+function GenericBuilder (projectDir) {
+    this.root = projectDir || path.resolve(__dirname, '../../..');
+    this.binDirs = {
+        ant: path.join(this.root, hasCustomRules(this.root) ? 'ant-build' : 'bin'),
+        gradle: path.join(this.root, 'build', 'outputs', 'apk')
+    };
+}
+
+function hasCustomRules(projectRoot) {
+    return fs.existsSync(path.join(projectRoot, 'custom_rules.xml'));
+}
+
+GenericBuilder.prototype.prepEnv = function() {
+    return Q();
+};
+
+GenericBuilder.prototype.build = function() {
+    events.emit('log', 'Skipping build...');
+    return Q(null);
+};
+
+GenericBuilder.prototype.clean = function() {
+    return Q();
+};
+
+GenericBuilder.prototype.findOutputApks = function(build_type, arch) {
+    var self = this;
+    return Object.keys(this.binDirs)
+    .reduce(function (result, builderName) {
+        var binDir = self.binDirs[builderName];
+        return result.concat(findOutputApksHelper(binDir, build_type, builderName === 'ant' ? null : arch));
+    }, [])
+    .sort(apkSorter);
+};
+
+GenericBuilder.prototype.readProjectProperties = function () {
+    function findAllUniq(data, r) {
+        var s = {};
+        var m;
+        while ((m = r.exec(data))) {
+            s[m[1]] = 1;
+        }
+        return Object.keys(s);
+    }
+
+    var data = fs.readFileSync(path.join(this.root, 'project.properties'), 'utf8');
+    return {
+        libs: findAllUniq(data, /^\s*android\.library\.reference\.\d+=(.*)(?:\s|$)/mg),
+        gradleIncludes: findAllUniq(data, /^\s*cordova\.gradle\.include\.\d+=(.*)(?:\s|$)/mg),
+        systemLibs: findAllUniq(data, /^\s*cordova\.system\.library\.\d+=(.*)(?:\s|$)/mg)
+    };
+};
+
+GenericBuilder.prototype.extractRealProjectNameFromManifest = function () {
+    var manifestPath = path.join(this.root, 'AndroidManifest.xml');
+    var manifestData = fs.readFileSync(manifestPath, 'utf8');
+    var m = /<manifest[\s\S]*?package\s*=\s*"(.*?)"/i.exec(manifestData);
+    if (!m) {
+        throw new CordovaError('Could not find package name in ' + manifestPath);
+    }
+
+    var packageName=m[1];
+    var lastDotIndex = packageName.lastIndexOf('.');
+    return packageName.substring(lastDotIndex + 1);
+};
+
+module.exports = GenericBuilder;
+
+function apkSorter(fileA, fileB) {
+    // De-prioritize unsigned builds
+    var unsignedRE = /-unsigned/;
+    if (unsignedRE.exec(fileA)) {
+        return 1;
+    } else if (unsignedRE.exec(fileB)) {
+        return -1;
+    }
+
+    var timeDiff = fs.statSync(fileA).mtime - fs.statSync(fileB).mtime;
+    return timeDiff === 0 ? fileA.length - fileB.length : timeDiff;
+}
+
+function findOutputApksHelper(dir, build_type, arch) {
+    var shellSilent = shell.config.silent;
+    shell.config.silent = true;
+
+    var ret = shell.ls(path.join(dir, '*.apk'))
+    .filter(function(candidate) {
+        var apkName = path.basename(candidate);
+        // Need to choose between release and debug .apk.
+        if (build_type === 'debug') {
+            return /-debug/.exec(apkName) && !/-unaligned|-unsigned/.exec(apkName);
+        }
+        if (build_type === 'release') {
+            return /-release/.exec(apkName) && !/-unaligned/.exec(apkName);
+        }
+        return true;
+    })
+    .sort(apkSorter);
+
+    shellSilent = shellSilent;
+
+    if (ret.length === 0) {
+        return ret;
+    }
+    // Assume arch-specific build if newest apk has -x86 or -arm.
+    var archSpecific = !!/-x86|-arm/.exec(path.basename(ret[0]));
+    // And show only arch-specific ones (or non-arch-specific)
+    ret = ret.filter(function(p) {
+        /*jshint -W018 */
+        return !!/-x86|-arm/.exec(path.basename(p)) == archSpecific;
+        /*jshint +W018 */
+    });
+
+    if (archSpecific && ret.length > 1 && arch) {
+        ret = ret.filter(function(p) {
+            return path.basename(p).indexOf('-' + arch) != -1;
+        });
+    }
+
+    return ret;
+}
diff --git a/StoneIsland/platforms/android/cordova/lib/builders/GradleBuilder.js b/StoneIsland/platforms/android/cordova/lib/builders/GradleBuilder.js
new file mode 100644
index 00000000..f415646e
--- /dev/null
+++ b/StoneIsland/platforms/android/cordova/lib/builders/GradleBuilder.js
@@ -0,0 +1,266 @@
+/*
+       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.
+*/
+
+var Q = require('q');
+var fs = require('fs');
+var util = require('util');
+var path = require('path');
+var shell = require('shelljs');
+var spawn = require('cordova-common').superspawn.spawn;
+var CordovaError = require('cordova-common').CordovaError;
+var check_reqs = require('../check_reqs');
+
+var GenericBuilder = require('./GenericBuilder');
+
+var MARKER = 'YOUR CHANGES WILL BE ERASED!';
+var SIGNING_PROPERTIES = '-signing.properties';
+var TEMPLATE =
+    '# This file is automatically generated.\n' +
+    '# Do not modify this file -- ' + MARKER + '\n';
+
+function GradleBuilder (projectRoot) {
+    GenericBuilder.call(this, projectRoot);
+
+    this.binDirs = {gradle: this.binDirs.gradle};
+}
+
+util.inherits(GradleBuilder, GenericBuilder);
+
+GradleBuilder.prototype.getArgs = function(cmd, opts) {
+    if (cmd == 'release') {
+        cmd = 'cdvBuildRelease';
+    } else if (cmd == 'debug') {
+        cmd = 'cdvBuildDebug';
+    }
+    var args = [cmd, '-b', path.join(this.root, 'build.gradle')];
+    if (opts.arch) {
+        args.push('-PcdvBuildArch=' + opts.arch);
+    }
+
+    // 10 seconds -> 6 seconds
+    args.push('-Dorg.gradle.daemon=true');
+    // to allow dex in process
+    args.push('-Dorg.gradle.jvmargs=-Xmx2048m');
+    // allow NDK to be used - required by Gradle 1.5 plugin
+    args.push('-Pandroid.useDeprecatedNdk=true');
+    args.push.apply(args, opts.extraArgs);
+    // Shaves another 100ms, but produces a "try at own risk" warning. Not worth it (yet):
+    // args.push('-Dorg.gradle.parallel=true');
+    return args;
+};
+
+// Makes the project buildable, minus the gradle wrapper.
+GradleBuilder.prototype.prepBuildFiles = function() {
+    // Update the version of build.gradle in each dependent library.
+    var pluginBuildGradle = path.join(this.root, 'cordova', 'lib', 'plugin-build.gradle');
+    var propertiesObj = this.readProjectProperties();
+    var subProjects = propertiesObj.libs;
+    var checkAndCopy = function(subProject, root) {
+      var subProjectGradle = path.join(root, subProject, 'build.gradle');
+      // This is the future-proof way of checking if a file exists
+      // This must be synchronous to satisfy a Travis test
+      try {
+          fs.accessSync(subProjectGradle, fs.F_OK);
+      } catch (e) {
+          shell.cp('-f', pluginBuildGradle, subProjectGradle);
+      }
+    };
+    for (var i = 0; i < subProjects.length; ++i) {
+        if (subProjects[i] !== 'CordovaLib') {
+          checkAndCopy(subProjects[i], this.root);
+        }
+    }
+    var name = this.extractRealProjectNameFromManifest();
+    //Remove the proj.id/name- prefix from projects: https://issues.apache.org/jira/browse/CB-9149
+    var settingsGradlePaths =  subProjects.map(function(p){
+        var realDir=p.replace(/[/\\]/g, ':');
+        var libName=realDir.replace(name+'-','');
+        var str='include ":'+libName+'"\n';
+        if(realDir.indexOf(name+'-')!==-1)
+            str+='project(":'+libName+'").projectDir = new File("'+p+'")\n';
+        return str;
+    });
+
+    // Write the settings.gradle file.
+    fs.writeFileSync(path.join(this.root, 'settings.gradle'),
+        '// GENERATED FILE - DO NOT EDIT\n' +
+        'include ":"\n' + settingsGradlePaths.join(''));
+    // Update dependencies within build.gradle.
+    var buildGradle = fs.readFileSync(path.join(this.root, 'build.gradle'), 'utf8');
+    var depsList = '';
+    var root = this.root;
+    var insertExclude = function(p) {
+          var gradlePath = path.join(root, p, 'build.gradle');
+          var projectGradleFile = fs.readFileSync(gradlePath, 'utf-8');
+          if(projectGradleFile.indexOf('CordovaLib') != -1) {
+            depsList += '{\n        exclude module:("CordovaLib")\n    }\n';
+          }
+          else {
+            depsList +='\n';
+          }
+    };
+    subProjects.forEach(function(p) {
+        console.log('Subproject Path: ' + p);
+        var libName=p.replace(/[/\\]/g, ':').replace(name+'-','');
+        depsList += '    debugCompile(project(path: "' + libName + '", configuration: "debug"))';
+        insertExclude(p);
+        depsList += '    releaseCompile(project(path: "' + libName + '", configuration: "release"))';
+        insertExclude(p);
+    });
+    // For why we do this mapping: https://issues.apache.org/jira/browse/CB-8390
+    var SYSTEM_LIBRARY_MAPPINGS = [
+        [/^\/?extras\/android\/support\/(.*)$/, 'com.android.support:support-$1:+'],
+        [/^\/?google\/google_play_services\/libproject\/google-play-services_lib\/?$/, 'com.google.android.gms:play-services:+']
+    ];
+    propertiesObj.systemLibs.forEach(function(p) {
+        var mavenRef;
+        // It's already in gradle form if it has two ':'s
+        if (/:.*:/.exec(p)) {
+            mavenRef = p;
+        } else {
+            for (var i = 0; i < SYSTEM_LIBRARY_MAPPINGS.length; ++i) {
+                var pair = SYSTEM_LIBRARY_MAPPINGS[i];
+                if (pair[0].exec(p)) {
+                    mavenRef = p.replace(pair[0], pair[1]);
+                    break;
+                }
+            }
+            if (!mavenRef) {
+                throw new CordovaError('Unsupported system library (does not work with gradle): ' + p);
+            }
+        }
+        depsList += '    compile "' + mavenRef + '"\n';
+    });
+    buildGradle = buildGradle.replace(/(SUB-PROJECT DEPENDENCIES START)[\s\S]*(\/\/ SUB-PROJECT DEPENDENCIES END)/, '$1\n' + depsList + '    $2');
+    var includeList = '';
+    propertiesObj.gradleIncludes.forEach(function(includePath) {
+        includeList += 'apply from: "' + includePath + '"\n';
+    });
+    buildGradle = buildGradle.replace(/(PLUGIN GRADLE EXTENSIONS START)[\s\S]*(\/\/ PLUGIN GRADLE EXTENSIONS END)/, '$1\n' + includeList + '$2');
+    fs.writeFileSync(path.join(this.root, 'build.gradle'), buildGradle);
+};
+
+GradleBuilder.prototype.prepEnv = function(opts) {
+    var self = this;
+    return check_reqs.check_gradle()
+    .then(function() {
+        return self.prepBuildFiles();
+    }).then(function() {
+        // Copy the gradle wrapper on each build so that:
+        // A) we don't require the Android SDK at project creation time, and
+        // B) we always use the SDK's latest version of it.
+        // check_reqs ensures that this is set.
+        /*jshint -W069 */
+        var sdkDir = process.env['ANDROID_HOME'];
+        /*jshint +W069 */
+        var wrapperDir = path.join(sdkDir, 'tools', 'templates', 'gradle', 'wrapper');
+        if (process.platform == 'win32') {
+            shell.rm('-f', path.join(self.root, 'gradlew.bat'));
+            shell.cp(path.join(wrapperDir, 'gradlew.bat'), self.root);
+        } else {
+            shell.rm('-f', path.join(self.root, 'gradlew'));
+            shell.cp(path.join(wrapperDir, 'gradlew'), self.root);
+        }
+        shell.rm('-rf', path.join(self.root, 'gradle', 'wrapper'));
+        shell.mkdir('-p', path.join(self.root, 'gradle'));
+        shell.cp('-r', path.join(wrapperDir, 'gradle', 'wrapper'), path.join(self.root, 'gradle'));
+
+        // If the gradle distribution URL is set, make sure it points to version we want.
+        // If it's not set, do nothing, assuming that we're using a future version of gradle that we don't want to mess with.
+        // For some reason, using ^ and $ don't work.  This does the job, though.
+        var distributionUrlRegex = /distributionUrl.*zip/;
+        /*jshint -W069 */
+        var distributionUrl = process.env['CORDOVA_ANDROID_GRADLE_DISTRIBUTION_URL'] || 'https\\://services.gradle.org/distributions/gradle-2.14.1-all.zip';
+        /*jshint +W069 */
+        var gradleWrapperPropertiesPath = path.join(self.root, 'gradle', 'wrapper', 'gradle-wrapper.properties');
+        shell.chmod('u+w', gradleWrapperPropertiesPath);
+        shell.sed('-i', distributionUrlRegex, 'distributionUrl='+distributionUrl, gradleWrapperPropertiesPath);
+
+        var propertiesFile = opts.buildType + SIGNING_PROPERTIES;
+        var propertiesFilePath = path.join(self.root, propertiesFile);
+        if (opts.packageInfo) {
+            fs.writeFileSync(propertiesFilePath, TEMPLATE + opts.packageInfo.toProperties());
+        } else if (isAutoGenerated(propertiesFilePath)) {
+            shell.rm('-f', propertiesFilePath);
+        }
+    });
+};
+
+/*
+ * Builds the project with gradle.
+ * Returns a promise.
+ */
+GradleBuilder.prototype.build = function(opts) {
+    var wrapper = path.join(this.root, 'gradlew');
+    var args = this.getArgs(opts.buildType == 'debug' ? 'debug' : 'release', opts);
+
+    return spawn(wrapper, args, {stdio: 'pipe'})
+    .progress(function (stdio){
+        if (stdio.stderr) {
+            /*
+             * Workaround for the issue with Java printing some unwanted information to
+             * stderr instead of stdout.
+             * This function suppresses 'Picked up _JAVA_OPTIONS' message from being
+             * printed to stderr. See https://issues.apache.org/jira/browse/CB-9971 for
+             * explanation.
+             */
+            var suppressThisLine = /^Picked up _JAVA_OPTIONS: /i.test(stdio.stderr.toString());
+            if (suppressThisLine) {
+                return;
+            }
+            process.stderr.write(stdio.stderr);
+        } else {
+            process.stdout.write(stdio.stdout);
+        }
+    }).catch(function (error) {
+        if (error.toString().indexOf('failed to find target with hash string') >= 0) {
+            return check_reqs.check_android_target(error).then(function() {
+                // If due to some odd reason - check_android_target succeeds
+                // we should still fail here.
+                return Q.reject(error);
+            });
+        }
+        return Q.reject(error);
+    });
+};
+
+GradleBuilder.prototype.clean = function(opts) {
+    var builder = this;
+    var wrapper = path.join(this.root, 'gradlew');
+    var args = builder.getArgs('clean', opts);
+    return Q().then(function() {
+        return spawn(wrapper, args, {stdio: 'inherit'});
+    })
+    .then(function () {
+        shell.rm('-rf', path.join(builder.root, 'out'));
+
+        ['debug', 'release'].forEach(function(config) {
+            var propertiesFilePath = path.join(builder.root, config + SIGNING_PROPERTIES);
+            if(isAutoGenerated(propertiesFilePath)){
+                shell.rm('-f', propertiesFilePath);
+            }
+        });
+    });
+};
+
+module.exports = GradleBuilder;
+
+function isAutoGenerated(file) {
+    return fs.existsSync(file) && fs.readFileSync(file, 'utf8').indexOf(MARKER) > 0;
+}
diff --git a/StoneIsland/platforms/android/cordova/lib/builders/builders.js b/StoneIsland/platforms/android/cordova/lib/builders/builders.js
new file mode 100644
index 00000000..4921c49a
--- /dev/null
+++ b/StoneIsland/platforms/android/cordova/lib/builders/builders.js
@@ -0,0 +1,47 @@
+/*
+       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.
+*/
+
+var CordovaError = require('cordova-common').CordovaError;
+
+var knownBuilders = {
+    ant: 'AntBuilder',
+    gradle: 'GradleBuilder',
+    none: 'GenericBuilder'
+};
+
+/**
+ * Helper method that instantiates and returns a builder for specified build
+ *   type.
+ *
+ * @param   {String}  builderType   Builder name to construct and return. Must
+ *   be one of 'ant', 'gradle' or 'none'
+ *
+ * @return  {Builder}               A builder instance for specified build type.
+ */
+module.exports.getBuilder = function (builderType, projectRoot) {
+    if (!knownBuilders[builderType])
+        throw new CordovaError('Builder ' + builderType + ' is not supported.');
+
+    try {
+        var Builder = require('./' + knownBuilders[builderType]);
+        return new Builder(projectRoot);
+    } catch (err) {
+        throw new CordovaError('Failed to instantiate ' + knownBuilders[builderType] + ' builder: ' + err);
+    }
+};