Merge tag 'upstream/2.5.1'

Upstream version 2.5.1

1 files changed, 139 insertions, 0 deletions

diff --git a/script/scons-configure-cache b/script/scons-configure-cache
new file mode 100644
index 0000000..a376b2d
--- /dev/null
+++ b/script/scons-configure-cache
@@ -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_2.5.1:3735:9dc6cee5c168 2016/11/03 14:02:02 bdbaddog"

+

+__version__ = "2.5.1"

+

+__build__ = "rel_2.5.1:3735:9dc6cee5c168[MODIFIED]"

+

+__buildsys__ = "mongodog"

+

+__date__ = "2016/11/03 14:02:02"

+

+__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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