Revert "Move frameworks/base/tools/ to frameworks/tools/"
This reverts commit 9f6a119c8aa276432ece4fe2118bd8a3c9b1067e.
diff --git a/tools/aapt/CrunchCache.h b/tools/aapt/CrunchCache.h
new file mode 100644
index 0000000..be3da5c
--- /dev/null
+++ b/tools/aapt/CrunchCache.h
@@ -0,0 +1,102 @@
+//
+// Copyright 2011 The Android Open Source Project
+//
+// Cache manager for pre-processed PNG files.
+// Contains code for managing which PNG files get processed
+// at build time.
+//
+
+#ifndef CRUNCHCACHE_H
+#define CRUNCHCACHE_H
+
+#include <utils/KeyedVector.h>
+#include <utils/String8.h>
+#include "FileFinder.h"
+#include "CacheUpdater.h"
+
+using namespace android;
+
+/** CrunchCache
+ * This class is a cache manager which can pre-process PNG files and store
+ * them in a mirror-cache. It's capable of doing incremental updates to its
+ * cache.
+ *
+ * Usage:
+ * Create an instance initialized with the root of the source tree, the
+ * root location to store the cache files, and an instance of a file finder.
+ * Then update the cache by calling crunch.
+ */
+class CrunchCache {
+public:
+ // Constructor
+ CrunchCache(String8 sourcePath, String8 destPath, FileFinder* ff);
+
+ // Nobody should be calling the default constructor
+ // So this space is intentionally left blank
+
+ // Default Copy Constructor and Destructor are fine
+
+ /** crunch is the workhorse of this class.
+ * It goes through all the files found in the sourcePath and compares
+ * them to the cached versions in the destPath. If the optional
+ * argument forceOverwrite is set to true, then all source files are
+ * re-crunched even if they have not been modified recently. Otherwise,
+ * source files are only crunched when they needUpdating. Afterwards,
+ * we delete any leftover files in the cache that are no longer present
+ * in source.
+ *
+ * PRECONDITIONS:
+ * No setup besides construction is needed
+ * POSTCONDITIONS:
+ * The cache is updated to fully reflect all changes in source.
+ * The function then returns the number of files changed in cache
+ * (counting deletions).
+ */
+ size_t crunch(CacheUpdater* cu, bool forceOverwrite=false);
+
+private:
+ /** loadFiles is a wrapper to the FileFinder that places matching
+ * files into mSourceFiles and mDestFiles.
+ *
+ * POSTCONDITIONS
+ * mDestFiles and mSourceFiles are refreshed to reflect the current
+ * state of the files in the source and dest directories.
+ * Any previous contents of mSourceFiles and mDestFiles are cleared.
+ */
+ void loadFiles();
+
+ /** needsUpdating takes a file path
+ * and returns true if the file represented by this path is newer in the
+ * sourceFiles than in the cache (mDestFiles).
+ *
+ * PRECONDITIONS:
+ * mSourceFiles and mDestFiles must be initialized and filled.
+ * POSTCONDITIONS:
+ * returns true if and only if source file's modification time
+ * is greater than the cached file's mod-time. Otherwise returns false.
+ *
+ * USAGE:
+ * Should be used something like the following:
+ * if (needsUpdating(filePath))
+ * // Recrunch sourceFile out to destFile.
+ *
+ */
+ bool needsUpdating(String8 relativePath) const;
+
+ // DATA MEMBERS ====================================================
+
+ String8 mSourcePath;
+ String8 mDestPath;
+
+ Vector<String8> mExtensions;
+
+ // Each vector of paths contains one entry per PNG file encountered.
+ // Each entry consists of a path pointing to that PNG.
+ DefaultKeyedVector<String8,time_t> mSourceFiles;
+ DefaultKeyedVector<String8,time_t> mDestFiles;
+
+ // Pointer to a FileFinder to use
+ FileFinder* mFileFinder;
+};
+
+#endif // CRUNCHCACHE_H