deps check

["David Farning" <dfarning sugarlabs org>]

Another possible patch from Sugar Labs.

We have created a depscheck command for our sugar jhbuild which
verifies that the proper dependencies are available to build our
'Sugar' moduleset.

I have attached the depcheck command file, the sysdeps module, and an
example dependency list.

It is a bit Sugar specific:(  If you would find it useful, I can
abstract it and push it upstream to you:)

It is is useful to me, to track dependency bloat.  If a dev adds a new
dependency it shows up as a bug within a few days.

It is useful to developers to insure that they will be able to build
sugar on their system.

thanks
david

import sys
from optparse import make_option

from jhbuild.commands import Command, register_command

import sysdeps

class cmd_depscheck(Command):

    name = 'depscheck'
    usage_args = ''

    def __init__(self):
        Command.__init__(self, [
            make_option('-s', '--script',
                        action='store_true', dest='script', default=False,
                        help=_('script friendly output')),
            ])

    def run(self, config, options, args):
        deps = sysdeps.get_packages()
        if not options.script and not deps:
            print 'Dependencies information is missing, skip sanity check.'
            return

        missing_deps = []
        for package, source in deps:
            if not sysdeps.check_package(package):
                missing_deps.append(package)

        if missing_deps:
            if not options.script:
                print 'Missing packages:'
            print ' '.join(missing_deps)
            sys.exit(1)

register_command(cmd_depscheck)

import os
import subprocess

from xml.dom import minidom

scripts_dir = os.path.dirname(__file__)
base_dir = os.path.dirname(scripts_dir)

def get_distribution():
    if 'SJH_DISTRIBUTION' in os.environ:
        return os.environ['SJH_DISTRIBUTION'].split('-')

    # Fedora
    if os.path.exists('/etc/fedora-release'):
        name = 'fedora'

        f = open('/etc/fedora-release')
        full_name = f.read()
        f.close()

        if 'Rawhide' in full_name:
            version = 'rawhide'
        else:
            version = full_name.split(' ')[2]

        return name, version

    # Debian and Ubuntu
    try:
        out, err = subprocess.Popen(['lsb_release', '-is'],
                                    stdout=subprocess.PIPE).communicate()
        name = out.strip().lower()

        out, err = subprocess.Popen(['lsb_release', '-rs'],
                                    stdout=subprocess.PIPE).communicate()
        version = out.strip()

        if name == 'debian' and version == 'testing':
            version = 'unstable'

        return name, version
    except OSError:
        pass

    return None, None

def check_package(package):
    name, version = get_distribution()
    if name == 'fedora':
        ret = subprocess.call(['rpm', '--quiet', '-q', package])
        return ret == 0
    elif name in ['ubuntu', 'debian']:
        cmd = ["dpkg-query", "-f='${status}'", "-W", package]
        out, err = subprocess.Popen(cmd, stdout=subprocess.PIPE).communicate()
        return out.find('install ok installed') != -1

    return None

def parse_dependencies():
    name, version = get_distribution()
    if name is None or version is None:
        return None

    filename = os.path.join(base_dir, 'config', 'sysdeps',
                            '%s-%s.xml' % (name, version))

    if not os.path.exists(filename):
        return None

    return minidom.parse(filename)

def get_packages():
    document = parse_dependencies()
    if document is None:
        return []

    packages = []
    root = document.childNodes[0]

    for node in root.childNodes:
        if node.nodeType == node.ELEMENT_NODE:
            if node.nodeName == 'package':
                name = node.getAttribute('name')
                if node.hasAttribute('source'):
                    source = node.getAttribute('source')
                else:
                    source = None

                packages.append((name, source))

    return packages

<?xml version="1.0"?>
<dependencies>
  <package name="intltool"/>
  <package name="libtool"/>
  <package name="python-devel"/>
  <package name="gcc"/>
  <package name="gcc-c++"/>
  <package name="gtk2-devel"/>
  <package name="pygtk2-devel"/>
  <package name="libcroco-devel"/>
  <package name="libgsf-devel"/>
  <package name="enchant-devel"/>
  <package name="fribidi-devel"/>
  <package name="boost-devel"/>
  <package name="libXt-devel"/>
  <package name="gnome-doc-utils"/>
  <package name="expat-devel"/>
  <package name="gettext-devel"/>
  <package name="wv-devel"/>
  <package name="zlib-devel"/>
  <package name="gnome-common"/>
  <package name="numpy"/>
  <package name="gnome-python2-libwnck"/>
  <package name="xorg-x11-server-Xephyr"/>
  <package name="make"/>
  <package name="gnome-python2-rsvg"/>
  <package name="python-cjson"/>
  <package name="subversion"/>
  <package name="GConf2-devel"/>
  <package name="libglade2-devel"/>
  <package name="popt-devel"/>
  <package name="gnome-vfs2-devel"/>
  <package name="librsvg2-devel"/>
  <package name="gnome-icon-theme"/>
  <package name="icon-naming-utils"/>
  <package name="xorg-x11-utils"/>
  <package name="dejavu-fonts"/>
  <package name="gstreamer-python"/>
  <package name="icon-slicer"/>
  <package name="pygtksourceview"/>
  <package name="alsa-lib-devel"/>
  <package name="xapian-bindings-python"/>
  <package name="xapian-core-libs"/>
  <package name="gnome-python2-gconf"/>
  <package name="dbus-python"/>
  <package name="dbus-devel"/>
  <package name="dbus-glib-devel"/>
  <package name="loudmouth-devel"/>
  <package name="libsoup-devel"/>
  <package name="poppler-glib-devel"/>

  <package name="avahi"
           source="avahi"/>
  <package name="avahi-gobject-devel"
           source="avahi"/>
  <package name="avahi-tools"
           source="avahi"/>
  <package name="pygobject2"
           source="pygobject"/>
  <package name="libmatchbox"
           source="libmatchbox"/>
  <package name="matchbox-window-manager"
           source="matchbox-window-manager"/>
  <package name="xulrunner-python-devel"
           source="xulrunner"/>
  <package name="xulrunner-python"
           source="xulrunner"/>
  <package name="xulrunner-devel-unstable"
           source="xulrunner"/>
  <package name="hippo-canvas-python"
           source="hippo-canvas"/>
  <package name="pyabiword"
           source="pyabiword"/>
  <package name="libabiword"
           source="abiword"/>
  <package name="libabiword"
           source="abiword-plugins"/>
  <package name="hippo-canvas-python"
           source="hippo-canvas"/>
</dependencies>