Add module composer (php dependency manager)

library/packaging/composer

+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+
+# (c) 2014, Dimitrios Tydeas Mengidis <tydeas.dr@gmail.com>
+
+# This file is part of Ansible
+#
+# Ansible is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# Ansible is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Ansible.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+DOCUMENTATION = '''
+---
+module: composer
+author: Dimitrios Tydeas Mengidis
+short_description: Dependency Manager for PHP
+version_added: "1.4"
+description:
+    - Composer is a tool for dependency management in PHP. It allows you to declare the dependent libraries your project needs and it will install them in your project for you
+options:
+    working_dir:
+        description:
+            - Directory of your project ( see --working-dir )
+        required: true
+        default: null
+        aliases: [ "working-dir" ]
+    prefer_source:
+        description:
+            - Forces installation from package sources when possible ( see --prefer-source )
+        required: false
+        default: "no"
+        choices: [ "yes", "no" ]
+        aliases: [ "prefer-source" ]
+    prefer_dist:
+        description:
+            - Forces installation from package dist even for de versions ( see --prefer-dist )
+        required: false
+        default: "no"
+        choices: [ "yes", "no" ]
+        aliases: [ "prefer-dist" ]
+    no_dev:
+        description:
+            - Disables installation of require-dev packages ( see --no-dev )
+        required: false
+        default: "yes"
+        choices: [ "yes", "no" ]
+        aliases: [ "no-dev" ]
+    no_scripts:
+        description:
+            - Skips the execution of all scripts defined in composer.json ( see --no-scripts )
+        required: false
+        default: "no"
+        choices: [ "yes", "no" ]
+        aliases: [ "no-scripts" ]
+    no_plugins:
+        description:
+            - Disables all plugins ( see --no-plugins )
+        required: false
+        default: "no"
+        choices: [ "yes", "no" ]
+        aliases: [ "no-plugins" ]
+    optimize_autoloader:
+        description:
+            - Optimize autoloader during autoloader dump ( see --optimize-autoloader ). Convert PSR-0/4 autoloading to classmap to get a faster autoloader. This is recommended especially for production, but can take a bit of time to run so it is currently not done by default.
+        required: false
+        default: "yes"
+        choices: [ "yes", "no" ]
+        aliases: [ "optimize-autoloader" ]
+requirements:
+    - php
+    - composer installed in bin path (recommended /usr/local/bin)
+notes:
+    - Default options that are always appended in each execution are --no-ansi, --no-progress, and --no-interaction
+'''
+
+EXAMPLES = '''
+# Downloads and installs all the libs and dependencies outlined in the /path/to/project/composer.lock
+- composer: command=install working_dir=/path/to/project
+'''
+
+import os
+import re
+
+def parse_out(string):
+    return re.sub("\s+", " ", string).strip()
+
+def has_changed(string):
+    return (re.match("Nothing to install or update", string) != None)
+
+def composer_install(module, options):
+    php_path      = module.get_bin_path("php", True, ["/usr/local/bin"])
+    composer_path = module.get_bin_path("composer", True, ["/usr/local/bin"])
+    cmd           = "%s %s install %s" % (php_path, composer_path, " ".join(options))
+
+    return module.run_command(cmd)
+
+def main():
+    module = AnsibleModule(
+        argument_spec = dict(
+            working_dir         = dict(aliases=["working-dir"], required=True),
+            prefer_source       = dict(default="no", type="bool", aliases=["prefer-source"]),
+            prefer_dist         = dict(default="no", type="bool", aliases=["prefer-dist"]),
+            no_dev              = dict(default="yes", type="bool", aliases=["no-dev"]),
+            no_scripts          = dict(default="no", type="bool", aliases=["no-scripts"]),
+            no_plugins          = dict(default="no", type="bool", aliases=["no-plugins"]),
+            optimize_autoloader = dict(default="yes", type="bool", aliases=["optimize-autoloader"]),
+        ),
+        supports_check_mode=True
+    )
+
+    module.params["working_dir"] = os.path.abspath(module.params["working_dir"])
+
+    options = set([])
+    # Default options
+    options.add("--no-ansi")
+    options.add("--no-progress")
+    options.add("--no-interaction")
+
+    if module.check_mode:
+        options.add("--dry-run")
+
+    # Prepare options
+    for i in module.params:
+        opt = "--%s" % i.replace("_","-")
+        p = module.params[i]
+        if isinstance(p, (bool)) and p:
+            options.add(opt)
+        elif isinstance(p, (str)):
+            options.add("%s=%s" % (opt, p))
+
+    rc, out, err = composer_install(module, options)
+
+    if rc != 0:
+        output = parse_out(err)
+        module.fail_json(msg=output)
+    else:
+        output = parse_out(out)
+        module.exit_json(changed=has_changed(output), msg=output)
+
+# import module snippets
+from ansible.module_utils.basic import *
+
+main()