[gentoo-commits] proj/gentoolkit:revdep-rebuild commit in: pym/gentoolkit/revdep_rebuild/

["Brian Dolbec" <brian.dolbec@gmail.com>]

commit:     3eb9f6755720847305d628770ac82f7a89a8661b
Author:     dol-sen <brian.dolbec <AT> gmail <DOT> com>
AuthorDate: Sun Apr 24 22:24:01 2011 +0000
Commit:     Brian Dolbec <brian.dolbec <AT> gmail <DOT> com>
CommitDate: Sun Apr 24 22:24:01 2011 +0000
URL:        http://git.overlays.gentoo.org/gitweb/?p=proj/gentoolkit.git;a=commit;h=3eb9f675

convert to gentoolkit's standard tab indent.

---
 pym/gentoolkit/revdep_rebuild/analyse.py  |  268 +++++++++---------
 pym/gentoolkit/revdep_rebuild/assign.py   |  136 +++++-----
 pym/gentoolkit/revdep_rebuild/cache.py    |  138 +++++-----
 pym/gentoolkit/revdep_rebuild/collect.py  |  416 ++++++++++++++--------------
 pym/gentoolkit/revdep_rebuild/settings.py |   32 ++--
 pym/gentoolkit/revdep_rebuild/stuff.py    |   48 ++--
 6 files changed, 519 insertions(+), 519 deletions(-)

diff --git a/pym/gentoolkit/revdep_rebuild/analyse.py b/pym/gentoolkit/revdep_rebuild/analyse.py
index c1c755b..a9ac753 100644
--- a/pym/gentoolkit/revdep_rebuild/analyse.py
+++ b/pym/gentoolkit/revdep_rebuild/analyse.py
@@ -16,179 +16,179 @@ from settings import SETTINGS
 
 
 def prepare_checks(files_to_check, libraries, bits):
-    ''' Calls scanelf for all files_to_check, then returns found libraries and dependencies
-    '''
-
-    libs = [] # libs found by scanelf
-    dependencies = [] # list of lists of files (from file_to_check) that uses
-                      # library (for dependencies[id] and libs[id] => id==id)
-
-    for line in scan(['-M', str(bits), '-nBF', '%F %n'], files_to_check, SETTINGS['CMD_MAX_ARGS']):
-    #call_program(['scanelf', '-M', str(bits), '-nBF', '%F %n',]+files_to_check).strip().split('\n'):
-        r = line.strip().split(' ')
-        if len(r) < 2: # no dependencies?
-            continue
-
-        deps = r[1].split(',')
-        for d in deps:
-            if d in libs:
-                i = libs.index(d)
-                dependencies[i].append(r[0])
-            else:
-                libs.append(d)
-                dependencies.append([r[0],])
-    return (libs, dependencies)
+	''' Calls scanelf for all files_to_check, then returns found libraries and dependencies
+	'''
+
+	libs = [] # libs found by scanelf
+	dependencies = [] # list of lists of files (from file_to_check) that uses
+					  # library (for dependencies[id] and libs[id] => id==id)
+
+	for line in scan(['-M', str(bits), '-nBF', '%F %n'], files_to_check, SETTINGS['CMD_MAX_ARGS']):
+	#call_program(['scanelf', '-M', str(bits), '-nBF', '%F %n',]+files_to_check).strip().split('\n'):
+		r = line.strip().split(' ')
+		if len(r) < 2: # no dependencies?
+			continue
+
+		deps = r[1].split(',')
+		for d in deps:
+			if d in libs:
+				i = libs.index(d)
+				dependencies[i].append(r[0])
+			else:
+				libs.append(d)
+				dependencies.append([r[0],])
+	return (libs, dependencies)
 
 
 def extract_dependencies_from_la(la, libraries, to_check, logger):
-    broken = []
-    for f in la:
-        if not os.path.exists(f):
-            continue
-
-        for line in open(f, 'r').readlines():
-            line = line.strip()
-            if line.startswith('dependency_libs='):
-                m = re.match("dependency_libs='([^']+)'", line)
-                if m is not None:
-                    for el in m.group(1).split(' '):
-                        el = el.strip()
-                        if len(el) < 1 or el.startswith('-'):
-                            continue
-
-                        if el in la or el in libraries:
-                            pass
-                        else:
-                            if to_check:
-                                _break = False
-                                for tc in to_check:
-                                    if tc in el:
-                                        _break = True
-                                        break
-                                if not _break:
-                                    continue
-
-                            logger.info(yellow(' * ') + f + ' is broken (requires: ' + bold(el))
-                            broken.append(f)
-    return broken
+	broken = []
+	for f in la:
+		if not os.path.exists(f):
+			continue
+
+		for line in open(f, 'r').readlines():
+			line = line.strip()
+			if line.startswith('dependency_libs='):
+				m = re.match("dependency_libs='([^']+)'", line)
+				if m is not None:
+					for el in m.group(1).split(' '):
+						el = el.strip()
+						if len(el) < 1 or el.startswith('-'):
+							continue
+
+						if el in la or el in libraries:
+							pass
+						else:
+							if to_check:
+								_break = False
+								for tc in to_check:
+									if tc in el:
+										_break = True
+										break
+								if not _break:
+									continue
+
+							logger.info(yellow(' * ') + f + ' is broken (requires: ' + bold(el))
+							broken.append(f)
+	return broken
 
 
 def find_broken(found_libs, system_libraries, to_check):
-    ''' Search for broken libraries.
-        Check if system_libraries contains found_libs, where
-        system_libraries is list of obsolute pathes and found_libs
-        is list of library names.
-    '''
+	''' Search for broken libraries.
+		Check if system_libraries contains found_libs, where
+		system_libraries is list of obsolute pathes and found_libs
+		is list of library names.
+	'''
 
-    # join libraries and looking at it as string is way too faster than for-jumping
+	# join libraries and looking at it as string is way too faster than for-jumping
 
-    broken = []
-    sl = '|'.join(system_libraries)
+	broken = []
+	sl = '|'.join(system_libraries)
 
-    if not to_check:
-        for f in found_libs:
-            if f+'|' not in sl:
-                broken.append(found_libs.index(f))
-    else:
-        for tc in to_check:
-            for f in found_libs:
-                if tc in f:# and f+'|' not in sl:
-                    broken.append(found_libs.index(f))
+	if not to_check:
+		for f in found_libs:
+			if f+'|' not in sl:
+				broken.append(found_libs.index(f))
+	else:
+		for tc in to_check:
+			for f in found_libs:
+				if tc in f:# and f+'|' not in sl:
+					broken.append(found_libs.index(f))
 
-    return broken
+	return broken
 
 
 def main_checks(found_libs, broken, dependencies, logger):
-    ''' Checks for broken dependencies.
-        found_libs have to be the same as returned by prepare_checks
-        broken is list of libraries found by scanelf
-        dependencies is the value returned by prepare_checks
-    '''
+	''' Checks for broken dependencies.
+		found_libs have to be the same as returned by prepare_checks
+		broken is list of libraries found by scanelf
+		dependencies is the value returned by prepare_checks
+	'''
 
-    broken_pathes = []
+	broken_pathes = []
 
-    for b in broken:
-        f = found_libs[b]
-        logger.info('Broken files that requires: ' + bold(f))
-        for d in dependencies[b]:
-            logger.info(yellow(' * ') + d)
-            broken_pathes.append(d)
-    return broken_pathes
+	for b in broken:
+		f = found_libs[b]
+		logger.info('Broken files that requires: ' + bold(f))
+		for d in dependencies[b]:
+			logger.info(yellow(' * ') + d)
+			broken_pathes.append(d)
+	return broken_pathes
 
 
 def analyse(logger=logging, libraries=None, la_libraries=None, libraries_links=None, binaries=None, _libs_to_check=set()):
-    """Main program body.  It will collect all info and determine the
-    pkgs needing rebuilding.
+	"""Main program body.  It will collect all info and determine the
+	pkgs needing rebuilding.
 
-    @param logger: logger used for logging messages, instance of logging.Logger
-                   class. Can be logging (RootLogger).
-    @param _libs_to_check Libraries that need to be checked only
-    @rtype list: list of pkgs that need rebuilding
-    """
+	@param logger: logger used for logging messages, instance of logging.Logger
+				   class. Can be logging (RootLogger).
+	@param _libs_to_check Libraries that need to be checked only
+	@rtype list: list of pkgs that need rebuilding
+	"""
 
-    if libraries and la_libraries and libraries_links and binaries:
-        logger.info(blue(' * ') + bold('Found a valid cache, skipping collecting phase'))
-    else:
-        #TODO: add partial cache (for ex. only libraries) when found for some reason
+	if libraries and la_libraries and libraries_links and binaries:
+		logger.info(blue(' * ') + bold('Found a valid cache, skipping collecting phase'))
+	else:
+		#TODO: add partial cache (for ex. only libraries) when found for some reason
 
-        logger.warn(green(' * ') + bold('Collecting system binaries and libraries'))
-        bin_dirs, lib_dirs = prepare_search_dirs(logger)
+		logger.warn(green(' * ') + bold('Collecting system binaries and libraries'))
+		bin_dirs, lib_dirs = prepare_search_dirs(logger)
 
-        masked_dirs, masked_files, ld = parse_revdep_config()
-        lib_dirs = lib_dirs.union(ld)
-        bin_dirs = bin_dirs.union(ld)
-        masked_dirs = masked_dirs.union(set(['/lib/modules', '/lib32/modules', '/lib64/modules',]))
+		masked_dirs, masked_files, ld = parse_revdep_config()
+		lib_dirs = lib_dirs.union(ld)
+		bin_dirs = bin_dirs.union(ld)
+		masked_dirs = masked_dirs.union(set(['/lib/modules', '/lib32/modules', '/lib64/modules',]))
 
-        logger.info(green(' * ') + bold('Collecting dynamic linking informations'))
-        libraries, la_libraries, libraries_links, symlink_pairs = collect_libraries_from_dir(lib_dirs, masked_dirs, logger)
-        binaries = collect_binaries_from_dir(bin_dirs, masked_dirs, logger)
+		logger.info(green(' * ') + bold('Collecting dynamic linking informations'))
+		libraries, la_libraries, libraries_links, symlink_pairs = collect_libraries_from_dir(lib_dirs, masked_dirs, logger)
+		binaries = collect_binaries_from_dir(bin_dirs, masked_dirs, logger)
 
-        if SETTINGS['USE_TMP_FILES']:
-            save_cache(to_save={'libraries':libraries, 'la_libraries':la_libraries, 'libraries_links':libraries_links, 'binaries':binaries})
+		if SETTINGS['USE_TMP_FILES']:
+			save_cache(to_save={'libraries':libraries, 'la_libraries':la_libraries, 'libraries_links':libraries_links, 'binaries':binaries})
 
 
-    logger.debug('Found '+ str(len(libraries)) + ' libraries (+' + str(len(libraries_links)) + ' symlinks) and ' + str(len(binaries)) + ' binaries')
+	logger.debug('Found '+ str(len(libraries)) + ' libraries (+' + str(len(libraries_links)) + ' symlinks) and ' + str(len(binaries)) + ' binaries')
 
-    logger.warn(green(' * ') + bold('Checking dynamic linking consistency'))
-    logger.debug('Search for ' + str(len(binaries)+len(libraries)) + ' within ' + str(len(libraries)+len(libraries_links)))
-    libs_and_bins = libraries+binaries
+	logger.warn(green(' * ') + bold('Checking dynamic linking consistency'))
+	logger.debug('Search for ' + str(len(binaries)+len(libraries)) + ' within ' + str(len(libraries)+len(libraries_links)))
+	libs_and_bins = libraries+binaries
 
-    #l = []
-    #for line in call_program(['scanelf', '-M', '64', '-BF', '%F',] + libraries).strip().split('\n'):
-        #l.append(line)
-    #libraries = l
+	#l = []
+	#for line in call_program(['scanelf', '-M', '64', '-BF', '%F',] + libraries).strip().split('\n'):
+		#l.append(line)
+	#libraries = l
 
-    found_libs = []
-    dependencies = []
+	found_libs = []
+	dependencies = []
 
 
-    _bits, linkg = platform.architecture()
-    if _bits.startswith('32'):
-        bits = 32
-    elif _bits.startswith('64'):
-        bits = 64
+	_bits, linkg = platform.architecture()
+	if _bits.startswith('32'):
+		bits = 32
+	elif _bits.startswith('64'):
+		bits = 64
 
-    for av_bits in glob.glob('/lib[0-9]*') or ('/lib32',):
-        bits = int(av_bits[4:])
-        _libraries = scan(['-M', str(bits), '-BF', '%F'], libraries+libraries_links, SETTINGS['CMD_MAX_ARGS'])
-        #call_program(['scanelf', '-M', str(bits), '-BF', '%F',] + libraries+libraries_links).strip().split('\n')
+	for av_bits in glob.glob('/lib[0-9]*') or ('/lib32',):
+		bits = int(av_bits[4:])
+		_libraries = scan(['-M', str(bits), '-BF', '%F'], libraries+libraries_links, SETTINGS['CMD_MAX_ARGS'])
+		#call_program(['scanelf', '-M', str(bits), '-BF', '%F',] + libraries+libraries_links).strip().split('\n')
 
-        found_libs, dependencies = prepare_checks(libs_and_bins, _libraries, bits)
+		found_libs, dependencies = prepare_checks(libs_and_bins, _libraries, bits)
 
-        broken = find_broken(found_libs, _libraries, _libs_to_check)
-        broken_la = extract_dependencies_from_la(la_libraries, _libraries, _libs_to_check, logger)
+		broken = find_broken(found_libs, _libraries, _libs_to_check)
+		broken_la = extract_dependencies_from_la(la_libraries, _libraries, _libs_to_check, logger)
 
-        bits /= 2
-        bits = int(bits)
+		bits /= 2
+		bits = int(bits)
 
-    broken_pathes = main_checks(found_libs, broken, dependencies, logger)
-    broken_pathes += broken_la
+	broken_pathes = main_checks(found_libs, broken, dependencies, logger)
+	broken_pathes += broken_la
 
-    logger.warn(green(' * ') + bold('Assign files to packages'))
+	logger.warn(green(' * ') + bold('Assign files to packages'))
 
-    return assign_packages(broken_pathes, logger)
+	return assign_packages(broken_pathes, logger)
 
 
 
 if __name__ == '__main__':
-    print "This script shouldn't be called directly"
+	print "This script shouldn't be called directly"

diff --git a/pym/gentoolkit/revdep_rebuild/assign.py b/pym/gentoolkit/revdep_rebuild/assign.py
index 6dcf6e3..c4ae750 100644
--- a/pym/gentoolkit/revdep_rebuild/assign.py
+++ b/pym/gentoolkit/revdep_rebuild/assign.py
@@ -10,84 +10,84 @@ from settings import SETTINGS
 
 
 def assign_packages(broken, logger=logging):
-    ''' Finds and returns packages that owns files placed in broken.
-        Broken is list of files
-    '''
-    assigned = set()
-    for group in os.listdir(SETTINGS['PKG_DIR']):
-        for pkg in os.listdir(SETTINGS['PKG_DIR'] + group):
-            f = SETTINGS['PKG_DIR'] + group + '/' + pkg + '/CONTENTS'
-            if os.path.exists(f):
-                try:
-                    with open(f, 'r') as cnt:
-                        for line in cnt.readlines():
-                            m = re.match('^obj (/[^ ]+)', line)
-                            if m is not None:
-                                m = m.group(1)
-                                if m in broken:
-                                    found = group+'/'+pkg
-                                    if found not in assigned:
-                                        assigned.add(found)
-                                    logger.info('\t' + m + ' -> ' + bold(found))
-                except Exception as e:
-                    logger.warn(red(' !! Failed to read ' + f))
-
-    return assigned
+	''' Finds and returns packages that owns files placed in broken.
+		Broken is list of files
+	'''
+	assigned = set()
+	for group in os.listdir(SETTINGS['PKG_DIR']):
+		for pkg in os.listdir(SETTINGS['PKG_DIR'] + group):
+			f = SETTINGS['PKG_DIR'] + group + '/' + pkg + '/CONTENTS'
+			if os.path.exists(f):
+				try:
+					with open(f, 'r') as cnt:
+						for line in cnt.readlines():
+							m = re.match('^obj (/[^ ]+)', line)
+							if m is not None:
+								m = m.group(1)
+								if m in broken:
+									found = group+'/'+pkg
+									if found not in assigned:
+										assigned.add(found)
+									logger.info('\t' + m + ' -> ' + bold(found))
+				except Exception as e:
+					logger.warn(red(' !! Failed to read ' + f))
+
+	return assigned
 
 
 def get_best_match(cpv, cp, logger):
-    """Tries to find another version of the pkg with the same slot
-    as the deprecated installed version.  Failing that attempt to get any version
-    of the same app
-
-    @param cpv: string
-    @param cp: string
-    @rtype tuple: ([cpv,...], SLOT)
-    """
-
-    slot = portage.db[portage.root]["vartree"].dbapi.aux_get(cpv, ["SLOT"])
-    logger.warn(yellow('Warning: ebuild "' + cpv + '" not found.'))
-    logger.info('Looking for %s:%s' %(cp, slot))
-    try:
-        m = portdb.match('%s:%s' %(cp, slot))
-    except portage.exception.InvalidAtom:
-        m = None
-
-    if not m:
-        logger.warn(red('!!') + ' ' + yellow('Could not find ebuild for %s:%s' %(cp, slot)))
-        slot = ['']
-        m = portdb.match(cp)
-        if not m:
-            logger.warn(red('!!') + ' ' + yellow('Could not find ebuild for ' + cp))
-    return m, slot
+	"""Tries to find another version of the pkg with the same slot
+	as the deprecated installed version.  Failing that attempt to get any version
+	of the same app
+
+	@param cpv: string
+	@param cp: string
+	@rtype tuple: ([cpv,...], SLOT)
+	"""
+
+	slot = portage.db[portage.root]["vartree"].dbapi.aux_get(cpv, ["SLOT"])
+	logger.warn(yellow('Warning: ebuild "' + cpv + '" not found.'))
+	logger.info('Looking for %s:%s' %(cp, slot))
+	try:
+		m = portdb.match('%s:%s' %(cp, slot))
+	except portage.exception.InvalidAtom:
+		m = None
+
+	if not m:
+		logger.warn(red('!!') + ' ' + yellow('Could not find ebuild for %s:%s' %(cp, slot)))
+		slot = ['']
+		m = portdb.match(cp)
+		if not m:
+			logger.warn(red('!!') + ' ' + yellow('Could not find ebuild for ' + cp))
+	return m, slot
 
 
 def get_slotted_cps(cpvs, logger):
-    """Uses portage to reduce the cpv list into a cp:slot list and returns it
-    """
-    from portage.versions import catpkgsplit
-    from portage import portdb
+	"""Uses portage to reduce the cpv list into a cp:slot list and returns it
+	"""
+	from portage.versions import catpkgsplit
+	from portage import portdb
 
-    cps = []
-    for cpv in cpvs:
-        parts = catpkgsplit(cpv)
-        cp = parts[0] + '/' + parts[1]
-        try:
-            slot = portdb.aux_get(cpv, ["SLOT"])
-        except KeyError:
-            m, slot = get_best_match(cpv, cp, logger)
-            if not m:
-                logger.warn(red("Installed package: %s is no longer available" %cp))
-                continue
+	cps = []
+	for cpv in cpvs:
+		parts = catpkgsplit(cpv)
+		cp = parts[0] + '/' + parts[1]
+		try:
+			slot = portdb.aux_get(cpv, ["SLOT"])
+		except KeyError:
+			m, slot = get_best_match(cpv, cp, logger)
+			if not m:
+				logger.warn(red("Installed package: %s is no longer available" %cp))
+				continue
 
-        if slot[0]:
-            cps.append(cp + ":" + slot[0])
-        else:
-            cps.append(cp)
+		if slot[0]:
+			cps.append(cp + ":" + slot[0])
+		else:
+			cps.append(cp)
 
-    return cps
+	return cps
 
 
 
 if __name__ == '__main__':
-    print 'Nothing to call here'
+	print 'Nothing to call here'

diff --git a/pym/gentoolkit/revdep_rebuild/cache.py b/pym/gentoolkit/revdep_rebuild/cache.py
index 421e22d..616ef79 100644
--- a/pym/gentoolkit/revdep_rebuild/cache.py
+++ b/pym/gentoolkit/revdep_rebuild/cache.py
@@ -8,96 +8,96 @@ from settings import SETTINGS
 
 
 def read_cache(temp_path=SETTINGS['DEFAULT_TMP_DIR']):
-    ''' Reads cache information needed by analyse function.
-        This function does not checks if files exists nor timestamps,
-        check_temp_files should be called first
-        @param temp_path: directory where all temp files should reside
-        @return tuple with values of: libraries, la_libraries, libraries_links, symlink_pairs, binaries
-    '''
-
-    ret = {'libraries':[], 'la_libraries':[], 'libraries_links':[], 'binaries':[]}
-    try:
-        for key,val in ret.iteritems():
-            f = open(os.path.join(temp_path, key))
-            for line in f.readlines():
-                val.append(line.strip())
-            #libraries.remove('\n')
-            f.close()
-    except EnvironmentError:
-        pass
-
-    return (ret['libraries'], ret['la_libraries'], ret['libraries_links'], ret['binaries'])
+	''' Reads cache information needed by analyse function.
+		This function does not checks if files exists nor timestamps,
+		check_temp_files should be called first
+		@param temp_path: directory where all temp files should reside
+		@return tuple with values of: libraries, la_libraries, libraries_links, symlink_pairs, binaries
+	'''
+
+	ret = {'libraries':[], 'la_libraries':[], 'libraries_links':[], 'binaries':[]}
+	try:
+		for key,val in ret.iteritems():
+			f = open(os.path.join(temp_path, key))
+			for line in f.readlines():
+				val.append(line.strip())
+			#libraries.remove('\n')
+			f.close()
+	except EnvironmentError:
+		pass
+
+	return (ret['libraries'], ret['la_libraries'], ret['libraries_links'], ret['binaries'])
 
 
 def save_cache(logger=logging, to_save={}, temp_path=SETTINGS['DEFAULT_TMP_DIR']):
-    ''' Tries to store caching information.
-        @param logger
-        @param to_save have to be dict with keys: libraries, la_libraries, libraries_links and binaries
-    '''
+	''' Tries to store caching information.
+		@param logger
+		@param to_save have to be dict with keys: libraries, la_libraries, libraries_links and binaries
+	'''
 
-    if not os.path.exists(temp_path):
-        os.makedirs(temp_path)
+	if not os.path.exists(temp_path):
+		os.makedirs(temp_path)
 
-    try:
-        f = open(os.path.join(temp_path, 'timestamp'), 'w')
-        f.write(str(int(time.time())))
-        f.close()
+	try:
+		f = open(os.path.join(temp_path, 'timestamp'), 'w')
+		f.write(str(int(time.time())))
+		f.close()
 
-        for key,val in to_save.iteritems():
-            f = open(os.path.join(temp_path, key), 'w')
-            for line in val:
-                f.write(line + '\n')
-            f.close()
-    except Exception as ex:
-        logger.warn(red('Could not save cache: %s' %str(ex)))
+		for key,val in to_save.iteritems():
+			f = open(os.path.join(temp_path, key), 'w')
+			for line in val:
+				f.write(line + '\n')
+			f.close()
+	except Exception as ex:
+		logger.warn(red('Could not save cache: %s' %str(ex)))
 
 
 
 def check_temp_files(temp_path=SETTINGS['DEFAULT_TMP_DIR'], max_delay=3600):
-    ''' Checks if temporary files from previous run are still available
-        and if they aren't too old
-        @param temp_path is directory, where temporary files should be found
-        @param max_delay is maximum time difference (in seconds) when those files
-                are still considered fresh and useful
-        returns True, when files can be used, or False, when they don't
-        exists or they are too old
-    '''
+	''' Checks if temporary files from previous run are still available
+		and if they aren't too old
+		@param temp_path is directory, where temporary files should be found
+		@param max_delay is maximum time difference (in seconds) when those files
+				are still considered fresh and useful
+		returns True, when files can be used, or False, when they don't
+		exists or they are too old
+	'''
 
-    if not os.path.exists(temp_path) or not os.path.isdir(temp_path):
-        return False
+	if not os.path.exists(temp_path) or not os.path.isdir(temp_path):
+		return False
 
-    timestamp_path = os.path.join(temp_path, 'timestamp')
-    if not os.path.exists(timestamp_path) or not os.path.isfile(timestamp_path):
-        return False
+	timestamp_path = os.path.join(temp_path, 'timestamp')
+	if not os.path.exists(timestamp_path) or not os.path.isfile(timestamp_path):
+		return False
 
-    try:
-        f = open(timestamp_path)
-        timestamp = int(f.readline())
-        f.close()
-    except:
-        timestamp = 0
-        return False
+	try:
+		f = open(timestamp_path)
+		timestamp = int(f.readline())
+		f.close()
+	except:
+		timestamp = 0
+		return False
 
-    diff = int(time.time()) - timestamp
-    return max_delay > diff
+	diff = int(time.time()) - timestamp
+	return max_delay > diff
 
 
 
 if __name__ == '__main__':
-    print 'Preparing cache ... '
+	print 'Preparing cache ... '
 
-    from collect import *
+	from collect import *
 
-    bin_dirs, lib_dirs = prepare_search_dirs()
+	bin_dirs, lib_dirs = prepare_search_dirs()
 
-    masked_dirs, masked_files, ld = parse_revdep_config()
-    lib_dirs = lib_dirs.union(ld)
-    bin_dirs = bin_dirs.union(ld)
-    masked_dirs = masked_dirs.union(set(['/lib/modules', '/lib32/modules', '/lib64/modules',]))
+	masked_dirs, masked_files, ld = parse_revdep_config()
+	lib_dirs = lib_dirs.union(ld)
+	bin_dirs = bin_dirs.union(ld)
+	masked_dirs = masked_dirs.union(set(['/lib/modules', '/lib32/modules', '/lib64/modules',]))
 
-    libraries, la_libraries, libraries_links, symlink_pairs = collect_libraries_from_dir(lib_dirs, masked_dirs)
-    binaries = collect_binaries_from_dir(bin_dirs, masked_dirs)
+	libraries, la_libraries, libraries_links, symlink_pairs = collect_libraries_from_dir(lib_dirs, masked_dirs)
+	binaries = collect_binaries_from_dir(bin_dirs, masked_dirs)
 
-    save_cache(to_save={'libraries':libraries, 'la_libraries':la_libraries, 'libraries_links':libraries_links, 'binaries':binaries})
+	save_cache(to_save={'libraries':libraries, 'la_libraries':la_libraries, 'libraries_links':libraries_links, 'binaries':binaries})
 
-    print 'Done.'
+	print 'Done.'

diff --git a/pym/gentoolkit/revdep_rebuild/collect.py b/pym/gentoolkit/revdep_rebuild/collect.py
index 4a0714b..613749a 100644
--- a/pym/gentoolkit/revdep_rebuild/collect.py
+++ b/pym/gentoolkit/revdep_rebuild/collect.py
@@ -11,236 +11,236 @@ from settings import SETTINGS
 
 
 def parse_conf(conf_file=SETTINGS['DEFAULT_LD_FILE'], visited=None, logger=logging):
-    ''' Parses supplied conf_file for libraries pathes.
-        conf_file is file or files to parse
-        visited is set of files already parsed
-    '''
-    lib_dirs = set()
-    to_parse = set()
-
-    if isinstance(conf_file, basestring):
-        conf_file = [conf_file]
-
-    for conf in conf_file:
-        try:
-            with open(conf) as f:
-                for line in f.readlines():
-                    line = line.strip()
-                    if line.startswith('#'):
-                        continue
-                    elif line.startswith('include'):
-                        include_line = line.split()[1:]
-                        for included in include_line:
-                            if not included.startswith('/'):
-                                path = os.path.join(os.path.dirname(conf), \
-                                                    included)
-                            else:
-                                path = included
-
-                            to_parse = to_parse.union(glob.glob(path))
-                    else:
-                        lib_dirs.add(line)
-        except EnvironmentError:
-            logger.warn(yellow('Error when parsing file %s' %conf))
-
-    if visited is None:
-        visited = set()
-
-    visited = visited.union(conf_file)
-    to_parse = to_parse.difference(visited)
-    if to_parse:
-        lib_dirs = lib_dirs.union(parse_conf(to_parse, visited, logger=logger))
-
-    return lib_dirs
+	''' Parses supplied conf_file for libraries pathes.
+		conf_file is file or files to parse
+		visited is set of files already parsed
+	'''
+	lib_dirs = set()
+	to_parse = set()
+
+	if isinstance(conf_file, basestring):
+		conf_file = [conf_file]
+
+	for conf in conf_file:
+		try:
+			with open(conf) as f:
+				for line in f.readlines():
+					line = line.strip()
+					if line.startswith('#'):
+						continue
+					elif line.startswith('include'):
+						include_line = line.split()[1:]
+						for included in include_line:
+							if not included.startswith('/'):
+								path = os.path.join(os.path.dirname(conf), \
+													included)
+							else:
+								path = included
+
+							to_parse = to_parse.union(glob.glob(path))
+					else:
+						lib_dirs.add(line)
+		except EnvironmentError:
+			logger.warn(yellow('Error when parsing file %s' %conf))
+
+	if visited is None:
+		visited = set()
+
+	visited = visited.union(conf_file)
+	to_parse = to_parse.difference(visited)
+	if to_parse:
+		lib_dirs = lib_dirs.union(parse_conf(to_parse, visited, logger=logger))
+
+	return lib_dirs
 
 
 def prepare_search_dirs(logger=logging):
-    ''' Lookup for search dirs. Returns tuple with two lists,
-        (list_of_bin_dirs, list_of_lib_dirs)
-    '''
+	''' Lookup for search dirs. Returns tuple with two lists,
+		(list_of_bin_dirs, list_of_lib_dirs)
+	'''
 
-    bin_dirs = set(['/bin', '/usr/bin', ])
-    lib_dirs = set(['/lib', '/usr/lib', ])
+	bin_dirs = set(['/bin', '/usr/bin', ])
+	lib_dirs = set(['/lib', '/usr/lib', ])
 
-    #try:
-    with open(os.path.join(portage.root, SETTINGS['DEFAULT_ENV_FILE']), 'r') as f:
-        for line in f.readlines():
-            line = line.strip()
-            m = re.match("^export (ROOT)?PATH='([^']+)'", line)
-            if m is not None:
-                bin_dirs = bin_dirs.union(set(m.group(2).split(':')))
-    #except EnvironmentError:
-        #logger.debug(yellow('Could not open file %s' % f))
+	#try:
+	with open(os.path.join(portage.root, SETTINGS['DEFAULT_ENV_FILE']), 'r') as f:
+		for line in f.readlines():
+			line = line.strip()
+			m = re.match("^export (ROOT)?PATH='([^']+)'", line)
+			if m is not None:
+				bin_dirs = bin_dirs.union(set(m.group(2).split(':')))
+	#except EnvironmentError:
+		#logger.debug(yellow('Could not open file %s' % f))
 
-    lib_dirs = parse_conf(logger=logger)
-    return (bin_dirs, lib_dirs)
+	lib_dirs = parse_conf(logger=logger)
+	return (bin_dirs, lib_dirs)
 
 
 def parse_revdep_config():
-    ''' Parses all files under /etc/revdep-rebuild/ and returns
-        tuple of: (masked_dirs, masked_files, search_dirs)'''
-
-    search_dirs = set()
-    masked_dirs = set()
-    masked_files = set()
-
-    #TODO: remove hard-coded path
-    for f in os.listdir(SETTINGS['REVDEP_CONFDIR']):
-        for line in open(os.path.join('/etc/revdep-rebuild', f)):
-            line = line.strip()
-            if not line.startswith('#'): #first check for comment, we do not want to regex all lines
-                m = re.match('LD_LIBRARY_MASK=\\"([^"]+)\\"', line)
-                if m is not None:
-                    s = m.group(1).split(' ')
-                    masked_files = masked_files.union(s)
-                    continue
-                m = re.match('SEARCH_DIRS_MASK=\\"([^"]+)\\"', line)
-                if m is not None:
-                    s = m.group(1).split(' ')
-                    for ss in s:
-                        masked_dirs = masked_dirs.union(glob.glob(ss))
-                    continue
-                m = re.match('SEARCH_DIRS=\\"([^"]+)\\"', line)
-                if m is not None:
-                    s = m.group(1).split()
-                    for ss in s:
-                        search_dirs = search_dirs.union(glob.glob(ss))
-                    continue
-
-    return (masked_dirs, masked_files, search_dirs)
+	''' Parses all files under /etc/revdep-rebuild/ and returns
+		tuple of: (masked_dirs, masked_files, search_dirs)'''
+
+	search_dirs = set()
+	masked_dirs = set()
+	masked_files = set()
+
+	#TODO: remove hard-coded path
+	for f in os.listdir(SETTINGS['REVDEP_CONFDIR']):
+		for line in open(os.path.join('/etc/revdep-rebuild', f)):
+			line = line.strip()
+			if not line.startswith('#'): #first check for comment, we do not want to regex all lines
+				m = re.match('LD_LIBRARY_MASK=\\"([^"]+)\\"', line)
+				if m is not None:
+					s = m.group(1).split(' ')
+					masked_files = masked_files.union(s)
+					continue
+				m = re.match('SEARCH_DIRS_MASK=\\"([^"]+)\\"', line)
+				if m is not None:
+					s = m.group(1).split(' ')
+					for ss in s:
+						masked_dirs = masked_dirs.union(glob.glob(ss))
+					continue
+				m = re.match('SEARCH_DIRS=\\"([^"]+)\\"', line)
+				if m is not None:
+					s = m.group(1).split()
+					for ss in s:
+						search_dirs = search_dirs.union(glob.glob(ss))
+					continue
+
+	return (masked_dirs, masked_files, search_dirs)
 
 
 def collect_libraries_from_dir(dirs, mask, logger=logging):
-    ''' Collects all libraries from specified list of directories.
-        mask is list of pathes, that are ommited in scanning, can be eighter single file or entire directory
-        Returns tuple composed of: list of libraries, list of symlinks, and toupe with pair
-        (symlink_id, library_id) for resolving dependencies
-    '''
-
-
-    found_directories = []  # contains list of directories found; allow us to reduce number of fnc calls
-    found_files = []
-    found_symlinks = []
-    found_la_files = [] # la libraries
-    symlink_pairs = []  # list of pairs symlink_id->library_id
-
-    for d in dirs:
-        if d in mask:
-            continue
-
-        try:
-            for l in os.listdir(d):
-                l = os.path.join(d, l)
-                if l in mask:
-                    continue
-
-                if os.path.isdir(l):
-                    if os.path.islink(l):
-                        #we do not want scan symlink-directories
-                        pass
-                    else:
-                        found_directories.append(l)
-                elif os.path.isfile(l):
-                    if l.endswith('.so') or '.so.' in l:
-                        if l in found_files or l in found_symlinks:
-                            continue
-
-                        if os.path.islink(l):
-                            found_symlinks.append(l)
-                            abs_path = os.path.realpath(l)
-                            if abs_path in found_files:
-                                i = found_files.index(abs_path)
-                            else:
-                                found_files.append(abs_path)
-                                i = len(found_files)-1
-                            symlink_pairs.append((len(found_symlinks)-1, i,))
-                        else:
-                            found_files.append(l)
-                        continue
-                    elif l.endswith('.la'):
-                        if l in found_la_files:
-                            continue
-
-                        found_la_files.append(l)
-                    else:
-                        # sometimes there are binaries in libs' subdir, for example in nagios
-                        if not os.path.islink(l):
-                            if l in found_files or l in found_symlinks:
-                                continue
-                            prv = os.stat(l)[stat.ST_MODE]
-                            if prv & stat.S_IXUSR == stat.S_IXUSR or \
-                                    prv & stat.S_IXGRP == stat.S_IXGRP or \
-                                    prv & stat.S_IXOTH == stat.S_IXOTH:
-                                found_files.append(l)
-        except Exception as ex:
-            logger.debug(yellow('Exception during collecting libraries: %s' %str(ex)))
-
-
-    if found_directories:
-        f,a,l,p = collect_libraries_from_dir(found_directories, mask, logger)
-        found_files+=f
-        found_la_files+=a
-        found_symlinks+=l
-        symlink_pairs+=p
-
-    return (found_files, found_la_files, found_symlinks, symlink_pairs)
+	''' Collects all libraries from specified list of directories.
+		mask is list of pathes, that are ommited in scanning, can be eighter single file or entire directory
+		Returns tuple composed of: list of libraries, list of symlinks, and toupe with pair
+		(symlink_id, library_id) for resolving dependencies
+	'''
+
+
+	found_directories = []  # contains list of directories found; allow us to reduce number of fnc calls
+	found_files = []
+	found_symlinks = []
+	found_la_files = [] # la libraries
+	symlink_pairs = []  # list of pairs symlink_id->library_id
+
+	for d in dirs:
+		if d in mask:
+			continue
+
+		try:
+			for l in os.listdir(d):
+				l = os.path.join(d, l)
+				if l in mask:
+					continue
+
+				if os.path.isdir(l):
+					if os.path.islink(l):
+						#we do not want scan symlink-directories
+						pass
+					else:
+						found_directories.append(l)
+				elif os.path.isfile(l):
+					if l.endswith('.so') or '.so.' in l:
+						if l in found_files or l in found_symlinks:
+							continue
+
+						if os.path.islink(l):
+							found_symlinks.append(l)
+							abs_path = os.path.realpath(l)
+							if abs_path in found_files:
+								i = found_files.index(abs_path)
+							else:
+								found_files.append(abs_path)
+								i = len(found_files)-1
+							symlink_pairs.append((len(found_symlinks)-1, i,))
+						else:
+							found_files.append(l)
+						continue
+					elif l.endswith('.la'):
+						if l in found_la_files:
+							continue
+
+						found_la_files.append(l)
+					else:
+						# sometimes there are binaries in libs' subdir, for example in nagios
+						if not os.path.islink(l):
+							if l in found_files or l in found_symlinks:
+								continue
+							prv = os.stat(l)[stat.ST_MODE]
+							if prv & stat.S_IXUSR == stat.S_IXUSR or \
+									prv & stat.S_IXGRP == stat.S_IXGRP or \
+									prv & stat.S_IXOTH == stat.S_IXOTH:
+								found_files.append(l)
+		except Exception as ex:
+			logger.debug(yellow('Exception during collecting libraries: %s' %str(ex)))
+
+
+	if found_directories:
+		f,a,l,p = collect_libraries_from_dir(found_directories, mask, logger)
+		found_files+=f
+		found_la_files+=a
+		found_symlinks+=l
+		symlink_pairs+=p
+
+	return (found_files, found_la_files, found_symlinks, symlink_pairs)
 
 
 def collect_binaries_from_dir(dirs, mask, logger=logging):
-    ''' Collects all binaries from specified list of directories.
-        mask is list of pathes, that are ommited in scanning, can be eighter single file or entire directory
-        Returns list of binaries
-    '''
-
-    found_directories = []  # contains list of directories found; allow us to reduce number of fnc calls
-    found_files = []
-
-    for d in dirs:
-        if d in mask:
-            continue
-
-        try:
-            for l in os.listdir(d):
-                l = os.path.join(d, l)
-                if d in mask:
-                    continue
-
-                if os.path.isdir(l):
-                    if os.path.islink(l):
-                        #we do not want scan symlink-directories
-                        pass
-                    else:
-                        found_directories.append(l)
-                elif os.path.isfile(l):
-                    #we're looking for binaries, and with binaries we do not need links, thus we can optimize a bit
-                    if not os.path.islink(l):
-                        prv = os.stat(l)[stat.ST_MODE]
-                        if prv & stat.S_IXUSR == stat.S_IXUSR or \
-                                prv & stat.S_IXGRP == stat.S_IXGRP or \
-                                prv & stat.S_IXOTH == stat.S_IXOTH:
-                            found_files.append(l)
-        except Exception as e:
-            logger.debug(yellow('Exception during binaries collecting: %s' %str(e)))
-
-    if found_directories:
-        found_files += collect_binaries_from_dir(found_directories, mask, logger)
-
-    return found_files
+	''' Collects all binaries from specified list of directories.
+		mask is list of pathes, that are ommited in scanning, can be eighter single file or entire directory
+		Returns list of binaries
+	'''
+
+	found_directories = []  # contains list of directories found; allow us to reduce number of fnc calls
+	found_files = []
+
+	for d in dirs:
+		if d in mask:
+			continue
+
+		try:
+			for l in os.listdir(d):
+				l = os.path.join(d, l)
+				if d in mask:
+					continue
+
+				if os.path.isdir(l):
+					if os.path.islink(l):
+						#we do not want scan symlink-directories
+						pass
+					else:
+						found_directories.append(l)
+				elif os.path.isfile(l):
+					#we're looking for binaries, and with binaries we do not need links, thus we can optimize a bit
+					if not os.path.islink(l):
+						prv = os.stat(l)[stat.ST_MODE]
+						if prv & stat.S_IXUSR == stat.S_IXUSR or \
+								prv & stat.S_IXGRP == stat.S_IXGRP or \
+								prv & stat.S_IXOTH == stat.S_IXOTH:
+							found_files.append(l)
+		except Exception as e:
+			logger.debug(yellow('Exception during binaries collecting: %s' %str(e)))
+
+	if found_directories:
+		found_files += collect_binaries_from_dir(found_directories, mask, logger)
+
+	return found_files
 
 
 
 if __name__ == '__main__':
-    bin_dirs, lib_dirs = prepare_search_dirs(logging)
+	bin_dirs, lib_dirs = prepare_search_dirs(logging)
 
-    masked_dirs, masked_files, ld = parse_revdep_config()
-    lib_dirs = lib_dirs.union(ld)
-    bin_dirs = bin_dirs.union(ld)
-    masked_dirs = masked_dirs.union(set(['/lib/modules', '/lib32/modules', '/lib64/modules',]))
+	masked_dirs, masked_files, ld = parse_revdep_config()
+	lib_dirs = lib_dirs.union(ld)
+	bin_dirs = bin_dirs.union(ld)
+	masked_dirs = masked_dirs.union(set(['/lib/modules', '/lib32/modules', '/lib64/modules',]))
 
-    libraries, la_libraries, libraries_links, symlink_pairs = collect_libraries_from_dir(lib_dirs, masked_dirs, logging)
-    binaries = collect_binaries_from_dir(bin_dirs, masked_dirs, logging)
+	libraries, la_libraries, libraries_links, symlink_pairs = collect_libraries_from_dir(lib_dirs, masked_dirs, logging)
+	binaries = collect_binaries_from_dir(bin_dirs, masked_dirs, logging)
 
-    print 'Found: %i binaries and %i libraries.' %(len(binaries), len(libraries))
+	print 'Found: %i binaries and %i libraries.' %(len(binaries), len(libraries))
 
 
 

diff --git a/pym/gentoolkit/revdep_rebuild/settings.py b/pym/gentoolkit/revdep_rebuild/settings.py
index ea6b1ec..b47cb3e 100644
--- a/pym/gentoolkit/revdep_rebuild/settings.py
+++ b/pym/gentoolkit/revdep_rebuild/settings.py
@@ -4,23 +4,23 @@ import os
 import portage
 
 SETTINGS = {
-        'DEFAULT_LD_FILE': os.path.join(portage.root, 'etc/ld.so.conf'),
-        'DEFAULT_ENV_FILE': os.path.join(portage.root, 'etc/profile.env'),
-        'REVDEP_CONFDIR': os.path.join(portage.root, 'etc/revdep-rebuild/'),
-        'PKG_DIR': os.path.join(portage.root, 'var/db/pkg/'),
-        'DEFAULT_TMP_DIR': '/tmp/revdep-rebuild', #cache default location
+		'DEFAULT_LD_FILE': os.path.join(portage.root, 'etc/ld.so.conf'),
+		'DEFAULT_ENV_FILE': os.path.join(portage.root, 'etc/profile.env'),
+		'REVDEP_CONFDIR': os.path.join(portage.root, 'etc/revdep-rebuild/'),
+		'PKG_DIR': os.path.join(portage.root, 'var/db/pkg/'),
+		'DEFAULT_TMP_DIR': '/tmp/revdep-rebuild', #cache default location
 
 
-        'USE_TMP_FILES': True, #if program should use temporary files from previous run
-        'CMD_MAX_ARGS': 1000, # number of maximum allowed files to be parsed at once
+		'USE_TMP_FILES': True, #if program should use temporary files from previous run
+		'CMD_MAX_ARGS': 1000, # number of maximum allowed files to be parsed at once
 
-        'PRETEND': False,     #pretend only
-        'EXACT': False,      #exact package version
-        'USE_TMP_FILES': True, #if program should use temporary files from previous run
+		'PRETEND': False,     #pretend only
+		'EXACT': False,      #exact package version
+		'USE_TMP_FILES': True, #if program should use temporary files from previous run
 
-        'IS_DEV': True,       #True for dev. version, False for stable
-                #used when IS_DEV is True, False forces to call emerge with --pretend
-                # can be set True from the cli with the --no-pretend option
-        'NO_PRETEND': False,
-        'VERBOSITY': 1,
-    }
+		'IS_DEV': True,       #True for dev. version, False for stable
+				#used when IS_DEV is True, False forces to call emerge with --pretend
+				# can be set True from the cli with the --no-pretend option
+		'NO_PRETEND': False,
+		'VERBOSITY': 1,
+	}

diff --git a/pym/gentoolkit/revdep_rebuild/stuff.py b/pym/gentoolkit/revdep_rebuild/stuff.py
index d153908..b1b6709 100644
--- a/pym/gentoolkit/revdep_rebuild/stuff.py
+++ b/pym/gentoolkit/revdep_rebuild/stuff.py
@@ -6,41 +6,41 @@ import portage
 
 # util. functions
 def call_program(args):
-    ''' Calls program with specified parameters and returns stdout '''
-    subp = subprocess.Popen(args, stdout=subprocess.PIPE, \
-                                stderr=subprocess.PIPE)
-    stdout, stderr = subp.communicate()
-    return stdout
+	''' Calls program with specified parameters and returns stdout '''
+	subp = subprocess.Popen(args, stdout=subprocess.PIPE, \
+								stderr=subprocess.PIPE)
+	stdout, stderr = subp.communicate()
+	return stdout
 
 
 def scan(params, files, max_args):
-    ''' Calls scanelf with given params and files to scan.
-        @param params is list of parameters that should be passed into scanelf app.
-        @param files list of files to scan.
-        @param max_args number of files to process at once
+	''' Calls scanelf with given params and files to scan.
+		@param params is list of parameters that should be passed into scanelf app.
+		@param files list of files to scan.
+		@param max_args number of files to process at once
 
-        When files count is greater CMD_MAX_ARGS, it'll be divided
-        into several parts
+		When files count is greater CMD_MAX_ARGS, it'll be divided
+		into several parts
 
-        @return scanelf output (joined if was called several times)
-    '''
-    out = []
-    for i in range(0, len(files), max_args):
-        out += call_program(['scanelf'] + params + files[i:i+max_args]).strip().split('\n')
-    return out
+		@return scanelf output (joined if was called several times)
+	'''
+	out = []
+	for i in range(0, len(files), max_args):
+		out += call_program(['scanelf'] + params + files[i:i+max_args]).strip().split('\n')
+	return out
 
 
 
 def exithandler(signum, frame):
-    sys.exit(1)
+	sys.exit(1)
 
 
 def get_masking_status(ebuild):
-    try:
-        status = portage.getmaskingstatus(ebuild)
-    except KeyError:
-        status = ['deprecated']
-    return status
+	try:
+		status = portage.getmaskingstatus(ebuild)
+	except KeyError:
+		status = ['deprecated']
+	return status
 
 if __name__ == '__main__':
-    print "There is nothing to run here."
+	print "There is nothing to run here."