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diff --git a/tools/aapt/AaptConfig.h b/tools/aapt/AaptConfig.h
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+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __AAPT_CONFIG_H
+#define __AAPT_CONFIG_H
+
+#include <set>
+#include <utils/String8.h>
+
+#include "ConfigDescription.h"
+
+/**
+ * Utility methods for dealing with configurations.
+ */
+namespace AaptConfig {
+
+/**
+ * Parse a string of the form 'fr-sw600dp-land' and fill in the
+ * given ResTable_config with resulting configuration parameters.
+ *
+ * The resulting configuration has the appropriate sdkVersion defined
+ * for backwards compatibility.
+ */
+bool parse(const android::String8& str, ConfigDescription* out = NULL);
+
+/**
+ * Parse a comma separated list of configuration strings. Duplicate configurations
+ * will be removed.
+ *
+ * Example input: "fr,de-land,fr-sw600dp-land"
+ */
+bool parseCommaSeparatedList(const android::String8& str, std::set<ConfigDescription>* outSet);
+
+/**
+ * If the configuration uses an axis that was added after
+ * the original Android release, make sure the SDK version
+ * is set accordingly.
+ */
+void applyVersionForCompatibility(ConfigDescription* config);
+
+// Individual axis
+bool parseMcc(const char* str, android::ResTable_config* out = NULL);
+bool parseMnc(const char* str, android::ResTable_config* out = NULL);
+bool parseLayoutDirection(const char* str, android::ResTable_config* out = NULL);
+bool parseSmallestScreenWidthDp(const char* str, android::ResTable_config* out = NULL);
+bool parseScreenWidthDp(const char* str, android::ResTable_config* out = NULL);
+bool parseScreenHeightDp(const char* str, android::ResTable_config* out = NULL);
+bool parseScreenLayoutSize(const char* str, android::ResTable_config* out = NULL);
+bool parseScreenLayoutLong(const char* str, android::ResTable_config* out = NULL);
+bool parseOrientation(const char* str, android::ResTable_config* out = NULL);
+bool parseUiModeType(const char* str, android::ResTable_config* out = NULL);
+bool parseUiModeNight(const char* str, android::ResTable_config* out = NULL);
+bool parseDensity(const char* str, android::ResTable_config* out = NULL);
+bool parseTouchscreen(const char* str, android::ResTable_config* out = NULL);
+bool parseKeysHidden(const char* str, android::ResTable_config* out = NULL);
+bool parseKeyboard(const char* str, android::ResTable_config* out = NULL);
+bool parseNavHidden(const char* str, android::ResTable_config* out = NULL);
+bool parseNavigation(const char* str, android::ResTable_config* out = NULL);
+bool parseScreenSize(const char* str, android::ResTable_config* out = NULL);
+bool parseVersion(const char* str, android::ResTable_config* out = NULL);
+
+android::String8 getVersion(const android::ResTable_config& config);
+
+/**
+ * Returns true if the two configurations only differ by the specified axis.
+ * The axis mask is a bitmask of CONFIG_* constants.
+ */
+bool isSameExcept(const android::ResTable_config& a, const android::ResTable_config& b, int configMask);
+
+} // namespace AaptConfig
+
+#endif // __AAPT_CONFIG_H