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#!/usr/bin/python -O
import re, os, sys, pacman
############################################################
# Define some classes we need
class Version:
def __init__(self):
self.version = None
self.file = None
class Package:
def __init__(self):
self.name = None
self.old = None
self.new = None
############################################################
# Functions for walking the file trees
############################################################
def filesForRegexp(topdir, regexp):
retval = []
def matchfile(regexp, dirpath, namelist):
for name in namelist:
if (regexp.match(name)):
retval.append(os.path.join(dirpath, name))
os.path.walk(topdir, matchfile, regexp)
return retval
def packagesInTree(topdir):
return filesForRegexp(topdir, re.compile("^.*\.pkg\.tar\.gz$"))
def pkgbuildsInTree(topdir):
return filesForRegexp(topdir, re.compile("^PKGBUILD$"))
############################################################
# Function for fetching info from PKGBUILDs and packages
############################################################
def infoFromPackageFile(filename):
pkgbuild = pacman.load(filename)
return pkgbuild.name, pkgbuild.version + "-" + pkgbuild.release
############################################################
# Functions for doing the final steps of execution
############################################################
def copyFileToRepo(filename, repodir):
destfile = os.path.join(repodir, os.path.basename(filename))
command = "cp -p '" + filename + "' '" + destfile + "'"
print(command)
def deleteFile(filename):
command = "rm '" + filename + "'"
print(command)
def runGensync(repo, pkgbuild):
target = os.path.join(repo, os.path.basename(repo) + ".db.tar.gz")
command = "gensync '" + pkgbuild_dir + "' '" + target + "'"
print(command)
############################################################
# Functions for error handling
############################################################
had_error = 0
def error(string):
global had_error
print >>sys.stderr, string + "\n"
had_error = 1
############################################################
# MAIN
############################################################
# ARGUMENTS
#
# tupkgupdate <repo_dir> <pkgbuild_dir> <build_dir>
if (len(sys.argv) < 4):
print >>sys.stderr, "syntax: update-repository <repo_dir> <pkgbuild_tree> <build_tree>"
sys.exit(-1)
repo_dir, pkgbuild_dir, build_dir = sys.argv[1:]
# Set up the lists and tables
packages = dict()
copy = list()
delete = list()
# PASS 1: PARSING/LOCATING
#
# A) Go through the PKGBUILD tree
# For each PKGBUILD, create a Package with new Version containing
# parsed version and and None for file
a_files = pkgbuildsInTree(pkgbuild_dir)
for a_file in a_files:
pkgname, ver = infoFromPackageFile(a_file)
# Error (and skip) if we encounter any invalid PKGBUILD files
if (pkgname == None or ver == None):
error("Pkgbuild '" + a_file + "' is invalid!")
continue
# Error (and skip) if we encounter any duplicate package names
if (packages.get(pkgname)):
error("Pkgbuild '" + a_file + "' is a duplicate!")
continue
version = Version()
version.version = ver
version.file = None
package = Package()
package.name = pkgname
package.new = version
packages[pkgname] = package
# B) Go through the old repo dir
# For each package file we encounter, create a Package with old
# Version containing parsed version and filepath
b_files = packagesInTree(repo_dir)
for b_file in b_files:
pkgname, ver = infoFromPackageFile(b_file)
version = Version()
version.version = ver
version.file = b_file
package = packages.get(pkgname)
if (package == None):
package = Package()
package.name = pkgname
packages[pkgname] = package
package.old = version
# C) Go through the build tree
# For each package file we encounter:
# 1 - look up the package name; if it fails, ignore the file (no error)
# 2 - if package.new = None, ignore the package (no error)
# 3 - if package.new.version doesn't match, then skip (no error)
# 4 - if package.new.file = None, new should point to this file
# otherwise, log an error (and skip)
c_files = packagesInTree(build_dir)
for c_file in c_files:
pkgname, ver = infoFromPackageFile(c_file)
# 1
package = packages.get(pkgname)
if (package == None):
continue
# 2
if (package.new == None):
continue
# 3
if (package.new.version != ver):
continue
# 4
if (package.new.file == None):
package.new.file = c_file
continue
else:
error("Duplicate new file '" + c_file + "'")
continue
# PASS 2: CHECKING
#
# Go through the package collection
# 1 - if package has no new, place its old file on the "delete" list
# 2 - if package has a new but no new.file, error and skip
# 3 - if package has no old, add new file to "copy" list into repo dir
# 4 - if old > new, error and skip
# 5 - if new == old, compare them and error and skip if files not the same
# 6 - add entry to "delete" list for old file and "copy" list for
# new file into repo dir
for package in packages.values():
# 1
if (package.new == None):
delete.append(package.old.file)
continue
# 2
if (package.new.file == None):
error("No new package supplied for " + package.name + " " + package.new.version + "!")
continue
# 3
if (package.old == None):
copy.append(package.new.file)
continue
# 4
if (package.old.ver < package.new.ver):
delete.append(package.old.file)
copy.append(package.new.file)
continue
# 5
if (package.old.ver == package.new.ver):
# TODO: implement checking that package files are identical
continue
# 6
delete.append(package.old.file)
copy.append(package.new.file)
continue
## IF WE HAVE HAD ANY ERRORS AT THIS POINT, ABORT! ##
if (had_error == 1):
error("Aborting due to errors.")
sys.exit(-1)
# PASS 3: EXECUTION
#
# Copy
for file in copy:
copyFileToRepo(file, repo_dir)
# Delete (second, for safety's sake)
for file in delete:
deleteFile(file)
# Run gensync to build the repo index
runGensync(repo_dir, pkgbuild_dir)
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