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import re, os
from ebuild import *
from filetricks import *
from settings import *
def pmsify_package_version(version_str):
return version_str.replace('-','.') #some CRAN-style versions have the form 0.1-1, which we transform into 0.1.1
def pmsify_package_list(package_list):
#note: the following returns a list of tuples
matches=re.findall(r'\s*(([^,]+\([^()]+?\))|([^,]+))\s*',package_list) #split into packages + versions
packages=[]
for package_part in matches: #process each package match
if len(package_part[1])>len(package_part[2]): #versioned package identifier
parse=re.match(r'([^,]+)\(([^()]+?)\)',package_part[1])
pkg_name=parse.group(1).strip()
versions=parse.group(2)
#fixme version specifiers
if pkg_name=='R':
category='dev-lang'
else:
category='dev-R'
packages.append(category+'/'+pkg_name)
else:
pkg_name=package_part[2].strip()
if pkg_name=='R':
category='dev-lang'
else:
category='dev-R' #assume it's a CRAN package
packages.append(category+'/'+pkg_name)
return packages
#Parse package options into values we can work with in accordance with PMS
def pmsify_package_data(data,remote_repository):
pms_pkg=Ebuild()
pms_pkg.cran_data=data
e_vars=pms_pkg.ebuild_vars
#fix settings:
if 'package' not in data:
e_vars['pn']='test'
else:
e_vars['pn']=data['package']
if not re.match('[a-zA-Z0-9+_].*',e_vars['pn']): #package name may not be valid according to PMS
e_vars['pn']='_'+e_vars.pn
if re.match('.*-[0-9]+',e_vars['pn']):
e_vars['pn']=e_vars.pn+'_'
if 'version' not in data: #set a version even if we have none
e_vars['pv']='0'
else:
e_vars['pv']=pmsify_package_version(data['version'])
if 'depends' in data:
deps=pmsify_package_list(data['depends'])
else: #some packages don't set dependencies, so force dependency on R
deps=['dev-lang/R',]
e_vars['depend']=deps
e_vars['pdepend']=deps
e_vars['rdepend']=deps
e_vars['iuse']="doc"
e_vars['keywords']="~x86 ~amd64"
if 'description' in data:
e_vars['description']=data['description'].strip().replace('\n',' ')
else:
e_vars['description']=e_vars['pn']
if 'license' in data: #fixme parse license data
e_vars['license']=data['license'].strip()
e_vars['src_uri']=remote_repository+'/src/contrib/'+data['package']+'_'+data['version']+'.tar.gz'
return pms_pkg
def read_packages(package_filename,local_repository):
packages_file=open(package_filename,"r")
file_parts=EmptyLinesFile(packages_file) #this is where we split the PACKAGES file into several file parts
packages=[]
import rfc822
repository_file=open(os.path.join(local_repository,REPO_MYDIR,'remote_uri'),'r')
remote_uri=repository_file.read().strip()
while not file_parts.eof:
cran_package=dict(rfc822.Message(file_parts).items()) #read part of PACKAGES file
pms_package=pmsify_package_data(cran_package,remote_uri) #fix values
packages.append(pms_package) #store in dict
return packages
def find_package(repo_location,package_name):
packages=read_packages(os.path.join(repo_location,REPO_MYDIR,'PACKAGES'),repo_location)
for package in packages:
if package.ebuild_vars['pn']==package_name:
return package
raise ValueError("Package not found")
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