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# repoman: Utilities
# Copyright 2007 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Id$
import logging
import os
from portage import util
from portage import exception
normalize_path = util.normalize_path
util.initialize_logger()
def have_profile_dir(path, maxdepth=3):
""" Try to figure out if 'path' has a /profiles dir in it by checking for a package.mask file
"""
while path != "/" and maxdepth:
if os.path.exists(path + "/profiles/package.mask"):
return normalize_path(path)
path = normalize_path(path + "/..")
maxdepth -= 1
def parse_use_local_desc(mylines, usedict=None):
"""
Records are of the form PACKAGE:FLAG - DESC
returns a dict of the form {cpv:set(flags)}"""
if usedict is None:
usedict = {}
for line_num, l in enumerate(mylines):
if not l or l.startswith('#'):
continue
pkg_flag = l.split(None, 1) # None implies splitting on whitespace
if not pkg_flag:
continue
try:
pkg, flag = pkg_flag[0].split(":")
except ValueError:
raise exception,ParseError("line %d: Malformed input: '%s'" % \
(linenum + 1, l.rstrip("\n")))
usedict.setdefault(pkg, set())
usedict[pkg].add(flag)
return usedict
def FindPackagesToScan(settings, startdir, reposplit):
""" Try to find packages that need to be scanned
Args:
settings - portage.config instance, preferably repoman_settings
startdir - directory that repoman was run in
reposplit - root of the repository
Returns:
A list of directories to scan
"""
def AddPackagesInDir(path):
""" Given a list of dirs, add any packages in it """
ret = []
pkgdirs = os.listdir(path)
for d in pkgdirs:
if d == 'CVS' or d.startswith('.'):
continue
p = os.path.join(path, d)
if os.path.isdir(p):
cat_pkg_dir = os.path.join(p.split(os.path.sep)[-2:])
logging.debug('adding %s to scanlist' % cat_pkg_dir)
ret.append(cat_pkg_dir)
return ret
scanlist = []
repolevel = len(reposplit)
if repolevel == 1: # root of the tree, startdir = repodir
for cat in settings.categories:
path = os.path.join(startdir, cat)
if not os.path.isdir(path):
continue
pkgdirs = os.listdir(path)
scanlist.extend(AddPackagesInDir(path))
elif repolevel == 2: # category level, startdir = catdir
# we only want 1 segment of the directory, is why we use catdir instead of startdir
catdir = reposplit[-2]
if catdir not in settings.categories:
logging.warn('%s is not a valid category according to profiles/categories, ' \
'skipping checks in %s' % (catdir, catdir))
else:
scanlist = AddPackagesInDir(catdir)
elif repolevel == 3: # pkgdir level, startdir = pkgdir
catdir = reposplit[-2]
pkgdir = reposplit[-1]
if catdir not in settings.categories:
logging.warn('%s is not a valid category according to profiles/categories, ' \
'skipping checks in %s' % (catdir, catdir))
else:
scanlist.append(os.path.join(catdir, pkgdir))
return scanlist
def FindPortdir(settings):
""" Try to figure out what repo we are in and whether we are in a regular
tree or an overlay.
Basic logic is:
1. Determine what directory we are in (supports symlinks).
2. Build a list of directories from / to our current location
3. Iterate over PORTDIR_OVERLAY, if we find a match, search for a profiles directory
in the overlay. If it has one, make it portdir, otherwise make it portdir_overlay.
4. If we didn't find an overlay in PORTDIR_OVERLAY, see if we are in PORTDIR; if so, set
portdir_overlay to PORTDIR. If we aren't in PORTDIR, see if PWD has a profiles dir, if
so, set portdir_overlay and portdir to PWD, else make them False.
5. If we haven't found portdir_overlay yet, it means the user is doing something odd, report
an error.
6. If we haven't found a portdir yet, set portdir to PORTDIR.
Args:
settings - portage.config instance, preferably repoman_settings
Returns:
tuple(portdir, portdir_overlay, location)
"""
portdir = None
portdir_overlay = None
location = os.getcwd()
pwd = os.environ.get('PWD', '')
if pwd != location and os.path.realpath(pwd) == location:
# getcwd() returns the canonical path but that makes it hard for repoman to
# orient itself if the user has symlinks in their portage tree structure.
# We use os.environ["PWD"], if available, to get the non-canonical path of
# the current working directory (from the shell).
location = pwd
location = normalize_path(location)
path_ids = set()
p = location
s = None
while True:
s = os.stat(p)
path_ids.add((s.st_dev, s.st_ino))
if p == "/":
break
p = os.path.dirname(p)
if location[-1] != "/":
location += "/"
for overlay in settings["PORTDIR_OVERLAY"].split():
overlay = os.path.realpath(overlay)
try:
s = os.stat(overlay)
except OSError:
continue
overlay_id = (s.st_dev, s.st_ino)
if overlay[-1] != "/":
overlay += "/"
if overlay_id in path_ids:
portdir_overlay = overlay
subdir = location[len(overlay):]
if subdir and subdir[-1] != "/":
subdir += "/"
if have_profile_dir(location, subdir.count("/")):
portdir = portdir_overlay
break
del p, s, path_ids
if not portdir_overlay:
if (settings["PORTDIR"] + os.path.sep).startswith(location):
portdir_overlay = settings["PORTDIR"]
else:
portdir_overlay = have_profile_dir(location)
portdir = portdir_overlay
if not portdir_overlay:
msg = 'Repoman is unable to determine PORTDIR or PORTDIR_OVERLAY' + \
' from the current working directory'
logging.critical(msg)
raise ValueError(msg)
if not portdir:
portdir = settings["PORTDIR"]
if not portdir_overlay.endswith('/'):
portdir_overlay += '/'
if not portdir.endswith('/'):
portdir += '/'
return map(normalize_path, (portdir, portdir_overlay, location))
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