PKGBUILD parser in Python.

Question

I've wrote PKGBUILD parser in Python and thought someone else might also want to use it. Here's a little example of how it works
# python
Python 2.5.2 (r252:60911, Jul 8 2008, 21:21:10)
[GCC 4.3.1 20080626 (prerelease)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import pkgbuild
>>> p = pkgbuild.PKGBUILD('/home/piotrek/aurshell/xfburn-svn/PKGBUILD')
>>> p.parse_pkgname()
['xfburn-svn']
>>> p.parse_makedepends()
['gcc', 'xfce4-dev-tools', 'pkgconfig', 'subversion']
>>> p.parseall()
{'replaces': [], 'pkgname': ['xfburn-svn'], 'maintrainer': [], 'license': ['GPL'], 'source': [], 'makedepends': ['gcc', 'xfce4-dev-tools', 'pkgconfig', 'subversion'], 'provides': ['xfburn'], 'contributor': [" Jakub 'Icar' Jar\xc3\xb3\xc5\xbcek <[email protected]>"], 'depends': ['libburn', 'libisofs', 'libxfcegui4', 'thunar', 'gcc', 'xfce4-dev-tools', 'pkgconfig', 'subversion'], 'md5sums': [], 'flags': ['--prefix=/usr', '--sysconfdir=/etc'], 'build': ['build() {\n\ncd $startdir/src\n msg "Connecting to svn.xfce.org svn server...."\n svn co $_svntrunk $_svnmod\n\n msg "SVN checkout done or server timeout"\n msg "Starting make..."\n\n cp -R $startdir/src/$_svnmod $startdir/src/$_svnmod-build\n cd $startdir/src/$_svnmod-build\n\n ./autogen.sh --prefix=/usr --sysconfdir=/etc\n make\n make DESTDIR=$startdir/pkg install\n\n}'], 'install': ['xfburn.install'], 'conflicts': ['xfburn'], 'pkgver': ['5141'], 'arch': ['i686', 'x86_64'], 'pkgdesc': ['Xfburn is a simple CD/DVD burning tool based on libburnia libraries. It can blank CD-RWs, burn and create iso images, as well as burn personal compositions of data to either CD or DVD.'], 'pkgrel': ['1']}
>>> from pprint import pprint
>>> pprint(p.parseall())
{'arch': ['i686', 'x86_64'],
'build': ['build() {\n\ncd $startdir/src\n msg "Connecting to svn.xfce.org svn server...."\n svn co $_svntrunk $_svnmod\n\n msg "SVN checkout done or server timeout"\n msg "Starting make..."\n\n cp -R $startdir/src/$_svnmod $startdir/src/$_svnmod-build\n cd $startdir/src/$_svnmod-build\n\n ./autogen.sh --prefix=/usr --sysconfdir=/etc\n make\n make DESTDIR=$startdir/pkg install\n\n}'],
'conflicts': ['xfburn'],
'contributor': [" Jakub 'Icar' Jar\xc3\xb3\xc5\xbcek <[email protected]>"],
'depends': ['libburn',
'libisofs',
'libxfcegui4',
'thunar',
'gcc',
'xfce4-dev-tools',
'pkgconfig',
'subversion'],
'flags': ['--prefix=/usr', '--sysconfdir=/etc'],
'install': ['xfburn.install'],
'license': ['GPL'],
'maintrainer': [],
'makedepends': ['gcc', 'xfce4-dev-tools', 'pkgconfig', 'subversion'],
'md5sums': [],
'pkgdesc': ['Xfburn is a simple CD/DVD burning tool based on libburnia libraries. It can blank CD-RWs, burn and create iso images, as well as burn personal compositions of data to either CD or DVD.'],
'pkgname': ['xfburn-svn'],
'pkgrel': ['1'],
'pkgver': ['5141'],
'provides': ['xfburn'],
'replaces': [],
'source': []}

Answer 1

Basic support for simple bash variables usage isn't that hard to add. But it's working only for $<word> syntax:
macbook # python pkgbuild.py /home/piotrek/aurshell/python-markdown/PKGBUILD
{'arch': ['x86_64', 'i686'],
'build': ['build() {\n cd ${startdir}/src/markdown-$_pkgver\n python setup.py install --root=$startdir/pkg\n}'],
'conflicts': [],
'contributor': ' Lauri J\xc3\xa4ntti <[email protected]>',
'depends': ['python'],
'flags': [],
'install': [],
'license': [],
'maintrainer': [],
'makedepends': [],
'md5sums': ['99b1721d723e8c64381fc023d23b202a'],
'pkgdesc': 'A Python implementation of John Gruber',
'pkgname': 'python-markdown',
'pkgrel': '1',
'pkgver': '1.7',
'provides': [],
'replaces': [],
'source': ['http://dfn.dl.sourceforge.net/sourceforge/python-markdown/markdown-1.7.zip']}
macbook # cat /home/piotrek/aurshell/python-markdown/PKGBUILD
# Contributor: Lauri Jäntti <[email protected]>
pkgname=python-markdown
pkgver=1.7
_pkgver=1.7
pkgrel=1
pkgdesc="A Python implementation of John Gruber's Markdown. current version implements all Markdown syntax features and fully passes Markdown Test Suite 1.0."
url="http://www.freewisdom.org/projects/python-markdown/"
license="custom"
arch=(x86_64 i686)
depends=('python')
source=(http://dfn.dl.sourceforge.net/sourceforge/python-markdown/markdown-$pkgver.zip)
md5sums=('99b1721d723e8c64381fc023d23b202a')
build() {
cd ${startdir}/src/markdown-$_pkgver
python setup.py install --root=$startdir/pkg