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| author | Zeno Albisser <zeno.albisser@digia.com> | 2013-08-15 21:46:11 +0200 |
|---|---|---|
| committer | Zeno Albisser <zeno.albisser@digia.com> | 2013-08-15 21:46:11 +0200 |
| commit | 679147eead574d186ebf3069647b4c23e8ccace6 (patch) | |
| tree | fc247a0ac8ff119f7c8550879ebb6d3dd8d1ff69 /chromium/tools/json_schema_compiler/json_schema.py | |
Initial import.
Diffstat (limited to 'chromium/tools/json_schema_compiler/json_schema.py')
| -rw-r--r-- | chromium/tools/json_schema_compiler/json_schema.py | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/chromium/tools/json_schema_compiler/json_schema.py b/chromium/tools/json_schema_compiler/json_schema.py new file mode 100644 index 00000000000..0fa1ba57e96 --- /dev/null +++ b/chromium/tools/json_schema_compiler/json_schema.py @@ -0,0 +1,50 @@ +# Copyright (c) 2012 The Chromium Authors. All rights reserved. +# Use of this source code is governed by a BSD-style license that can be +# found in the LICENSE file. + +import copy +import os +import sys + +import json_parse +import schema_util + +def DeleteNodes(item, delete_key): + """Deletes the given nodes in item, recursively, that have |delete_key| as + an attribute. + """ + def HasKey(thing): + return json_parse.IsDict(thing) and thing.get(delete_key, False) + + if json_parse.IsDict(item): + toDelete = [] + for key, value in item.items(): + if HasKey(value): + toDelete.append(key) + else: + DeleteNodes(value, delete_key) + for key in toDelete: + del item[key] + elif type(item) == list: + item[:] = [DeleteNodes(thing, delete_key) + for thing in item if not HasKey(thing)] + + return item + +def Load(filename): + with open(filename, 'r') as handle: + schemas = json_parse.Parse(handle.read()) + return schemas + +# A dictionary mapping |filename| to the object resulting from loading the JSON +# at |filename|. +_cache = {} + +def CachedLoad(filename): + """Equivalent to Load(filename), but caches results for subsequent calls""" + if filename not in _cache: + _cache[filename] = Load(filename) + # Return a copy of the object so that any changes a caller makes won't affect + # the next caller. + return copy.deepcopy(_cache[filename]) + |