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author | Jörg Frings-Fürst <debian@jff-webhosting.net> | 2016-04-10 18:15:18 +0200 |
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committer | Jörg Frings-Fürst <debian@jff-webhosting.net> | 2016-04-10 18:15:18 +0200 |
commit | 31d57e6191a51b64bb0141cdc6b9aef849977208 (patch) | |
tree | f81db7bcab6358e06610848ea3a960102d2dfaab /src/script/scons-configure-cache.py | |
parent | aa3efbff633b3a37ef0b10f14e35af5f58b68bb6 (diff) | |
parent | 301edd26f23e3d954dcea5cffc1ad13f969822ca (diff) |
Merge tag 'upstream/2.5.0+repack'
Upstream version 2.5.0+repack
Diffstat (limited to 'src/script/scons-configure-cache.py')
-rw-r--r-- | src/script/scons-configure-cache.py | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/src/script/scons-configure-cache.py b/src/script/scons-configure-cache.py new file mode 100644 index 0000000..dba42db --- /dev/null +++ b/src/script/scons-configure-cache.py @@ -0,0 +1,139 @@ +#! /usr/bin/env python
+#
+# SCons - a Software Constructor
+#
+# Copyright (c) 2001 - 2016 The SCons Foundation
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
+# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+__revision__ = "src/script/scons-configure-cache.py rel_2.5.0:3543:937e55cd78f7 2016/04/09 11:29:54 bdbaddog"
+
+__version__ = "2.5.0"
+
+__build__ = "rel_2.5.0:3543:937e55cd78f7[MODIFIED]"
+
+__buildsys__ = "ubuntu1404-32bit"
+
+__date__ = "2016/04/09 11:29:54"
+
+__developer__ = "bdbaddog"
+
+import argparse
+import glob
+import json
+import os
+
+def rearrange_cache_entries(current_prefix_len, new_prefix_len):
+ print 'Changing prefix length from', current_prefix_len, 'to', new_prefix_len
+ dirs = set()
+ old_dirs = set()
+ for file in glob.iglob(os.path.join('*', '*')):
+ name = os.path.basename(file)
+ dir = name[:current_prefix_len].upper()
+ if dir not in old_dirs:
+ print 'Migrating', dir
+ old_dirs.add(dir)
+ dir = name[:new_prefix_len].upper()
+ if dir not in dirs:
+ os.mkdir(dir)
+ dirs.add(dir)
+ os.rename(file, os.path.join(dir, name))
+
+ # Now delete the original directories
+ for dir in old_dirs:
+ os.rmdir(dir)
+
+# This dictionary should have one entry per entry in the cache config
+# Each entry should have the following:
+# implicit - (optional) This is to allow adding a new config entry and also
+# changing the behaviour of the system at the same time. This
+# indicates the value the config entry would have had if it had been
+# specified.
+# default - The value the config entry should have if it wasn't previously
+# specified
+# command-line - parameters to pass to ArgumentParser.add_argument
+# converter - (optional) Function to call if it's necessary to do some work
+# if this configuration entry changes
+config_entries = {
+ 'prefix_len' : {
+ 'implicit' : 1,
+ 'default' : 2 ,
+ 'command-line' : {
+ 'help' : 'Length of cache file name used as subdirectory prefix',
+ 'metavar' : '<number>',
+ 'type' : int
+ },
+ 'converter' : rearrange_cache_entries
+ }
+}
+parser = argparse.ArgumentParser(
+ description = 'Modify the configuration of an scons cache directory',
+ epilog = '''
+ Unless you specify an option, it will not be changed (if it is
+ already set in the cache config), or changed to an appropriate
+ default (it it is not set).
+ '''
+ )
+
+parser.add_argument('cache-dir', help='Path to scons cache directory')
+for param in config_entries:
+ parser.add_argument('--' + param.replace('_', '-'),
+ **config_entries[param]['command-line'])
+parser.add_argument('--version', action='version', version='%(prog)s 1.0')
+
+# Get the command line as a dict without any of the unspecified entries.
+args = dict(filter(lambda x: x[1], vars(parser.parse_args()).items()))
+
+# It seems somewhat strange to me, but positional arguments don't get the -
+# in the name changed to _, whereas optional arguments do...
+os.chdir(args['cache-dir'])
+del args['cache-dir']
+
+if not os.path.exists('config'):
+ # Validate the only files in the directory are directories 0-9, a-f
+ expected = [ '{:X}'.format(x) for x in range(0, 16) ]
+ if not set(os.listdir('.')).issubset(expected):
+ raise RuntimeError("This doesn't look like a version 1 cache directory")
+ config = dict()
+else:
+ with open('config') as conf:
+ config = json.load(conf)
+
+# Find any keys that aren't currently set but should be
+for key in config_entries:
+ if key not in config:
+ if 'implicit' in config_entries[key]:
+ config[key] = config_entries[key]['implicit']
+ else:
+ config[key] = config_entries[key]['default']
+ if key not in args:
+ args[key] = config_entries[key]['default']
+
+#Now we go through each entry in args to see if it changes an existing config
+#setting.
+for key in args:
+ if args[key] != config[key]:
+ if 'converter' in config_entries[key]:
+ config_entries[key]['converter'](config[key], args[key])
+ config[key] = args[key]
+
+# and write the updated config file
+with open('config', 'w') as conf:
+ json.dump(config, conf)
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