auto import from //depot/cupcake/@135843
diff --git a/include/utils/ZipFile.h b/include/utils/ZipFile.h
new file mode 100644
index 0000000..44df5bb
--- /dev/null
+++ b/include/utils/ZipFile.h
@@ -0,0 +1,269 @@
+/*
+ * Copyright (C) 2006 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.
+ */
+
+//
+// General-purpose Zip archive access. This class allows both reading and
+// writing to Zip archives, including deletion of existing entries.
+//
+#ifndef __LIBS_ZIPFILE_H
+#define __LIBS_ZIPFILE_H
+
+#include "ZipEntry.h"
+#include "Vector.h"
+#include "Errors.h"
+#include <stdio.h>
+
+namespace android {
+
+/*
+ * Manipulate a Zip archive.
+ *
+ * Some changes will not be visible in the until until "flush" is called.
+ *
+ * The correct way to update a file archive is to make all changes to a
+ * copy of the archive in a temporary file, and then unlink/rename over
+ * the original after everything completes. Because we're only interested
+ * in using this for packaging, we don't worry about such things. Crashing
+ * after making changes and before flush() completes could leave us with
+ * an unusable Zip archive.
+ */
+class ZipFile {
+public:
+ ZipFile(void)
+ : mZipFp(NULL), mReadOnly(false), mNeedCDRewrite(false)
+ {}
+ ~ZipFile(void) {
+ if (!mReadOnly)
+ flush();
+ if (mZipFp != NULL)
+ fclose(mZipFp);
+ discardEntries();
+ }
+
+ /*
+ * Open a new or existing archive.
+ */
+ typedef enum {
+ kOpenReadOnly = 0x01,
+ kOpenReadWrite = 0x02,
+ kOpenCreate = 0x04, // create if it doesn't exist
+ kOpenTruncate = 0x08, // if it exists, empty it
+ };
+ status_t open(const char* zipFileName, int flags);
+
+ /*
+ * Add a file to the end of the archive. Specify whether you want the
+ * library to try to store it compressed.
+ *
+ * If "storageName" is specified, the archive will use that instead
+ * of "fileName".
+ *
+ * If there is already an entry with the same name, the call fails.
+ * Existing entries with the same name must be removed first.
+ *
+ * If "ppEntry" is non-NULL, a pointer to the new entry will be returned.
+ */
+ status_t add(const char* fileName, int compressionMethod,
+ ZipEntry** ppEntry)
+ {
+ return add(fileName, fileName, compressionMethod, ppEntry);
+ }
+ status_t add(const char* fileName, const char* storageName,
+ int compressionMethod, ZipEntry** ppEntry)
+ {
+ return addCommon(fileName, NULL, 0, storageName,
+ ZipEntry::kCompressStored,
+ compressionMethod, ppEntry);
+ }
+
+ /*
+ * Add a file that is already compressed with gzip.
+ *
+ * If "ppEntry" is non-NULL, a pointer to the new entry will be returned.
+ */
+ status_t addGzip(const char* fileName, const char* storageName,
+ ZipEntry** ppEntry)
+ {
+ return addCommon(fileName, NULL, 0, storageName,
+ ZipEntry::kCompressDeflated,
+ ZipEntry::kCompressDeflated, ppEntry);
+ }
+
+ /*
+ * Add a file from an in-memory data buffer.
+ *
+ * If "ppEntry" is non-NULL, a pointer to the new entry will be returned.
+ */
+ status_t add(const void* data, size_t size, const char* storageName,
+ int compressionMethod, ZipEntry** ppEntry)
+ {
+ return addCommon(NULL, data, size, storageName,
+ ZipEntry::kCompressStored,
+ compressionMethod, ppEntry);
+ }
+
+ /*
+ * Add an entry by copying it from another zip file. If "padding" is
+ * nonzero, the specified number of bytes will be added to the "extra"
+ * field in the header.
+ *
+ * If "ppEntry" is non-NULL, a pointer to the new entry will be returned.
+ */
+ status_t add(const ZipFile* pSourceZip, const ZipEntry* pSourceEntry,
+ int padding, ZipEntry** ppEntry);
+
+ /*
+ * Mark an entry as having been removed. It is not actually deleted
+ * from the archive or our internal data structures until flush() is
+ * called.
+ */
+ status_t remove(ZipEntry* pEntry);
+
+ /*
+ * Flush changes. If mNeedCDRewrite is set, this writes the central dir.
+ */
+ status_t flush(void);
+
+ /*
+ * Expand the data into the buffer provided. The buffer must hold
+ * at least <uncompressed len> bytes. Variation expands directly
+ * to a file.
+ *
+ * Returns "false" if an error was encountered in the compressed data.
+ */
+ //bool uncompress(const ZipEntry* pEntry, void* buf) const;
+ //bool uncompress(const ZipEntry* pEntry, FILE* fp) const;
+ void* uncompress(const ZipEntry* pEntry);
+
+ /*
+ * Get an entry, by name. Returns NULL if not found.
+ *
+ * Does not return entries pending deletion.
+ */
+ ZipEntry* getEntryByName(const char* fileName) const;
+
+ /*
+ * Get the Nth entry in the archive.
+ *
+ * This will return an entry that is pending deletion.
+ */
+ int getNumEntries(void) const { return mEntries.size(); }
+ ZipEntry* getEntryByIndex(int idx) const;
+
+private:
+ /* these are private and not defined */
+ ZipFile(const ZipFile& src);
+ ZipFile& operator=(const ZipFile& src);
+
+ class EndOfCentralDir {
+ public:
+ EndOfCentralDir(void) :
+ mDiskNumber(0),
+ mDiskWithCentralDir(0),
+ mNumEntries(0),
+ mTotalNumEntries(0),
+ mCentralDirSize(0),
+ mCentralDirOffset(0),
+ mCommentLen(0),
+ mComment(NULL)
+ {}
+ virtual ~EndOfCentralDir(void) {
+ delete[] mComment;
+ }
+
+ status_t readBuf(const unsigned char* buf, int len);
+ status_t write(FILE* fp);
+
+ //unsigned long mSignature;
+ unsigned short mDiskNumber;
+ unsigned short mDiskWithCentralDir;
+ unsigned short mNumEntries;
+ unsigned short mTotalNumEntries;
+ unsigned long mCentralDirSize;
+ unsigned long mCentralDirOffset; // offset from first disk
+ unsigned short mCommentLen;
+ unsigned char* mComment;
+
+ enum {
+ kSignature = 0x06054b50,
+ kEOCDLen = 22, // EndOfCentralDir len, excl. comment
+
+ kMaxCommentLen = 65535, // longest possible in ushort
+ kMaxEOCDSearch = kMaxCommentLen + EndOfCentralDir::kEOCDLen,
+
+ };
+
+ void dump(void) const;
+ };
+
+
+ /* read all entries in the central dir */
+ status_t readCentralDir(void);
+
+ /* crunch deleted entries out */
+ status_t crunchArchive(void);
+
+ /* clean up mEntries */
+ void discardEntries(void);
+
+ /* common handler for all "add" functions */
+ status_t addCommon(const char* fileName, const void* data, size_t size,
+ const char* storageName, int sourceType, int compressionMethod,
+ ZipEntry** ppEntry);
+
+ /* copy all of "srcFp" into "dstFp" */
+ status_t copyFpToFp(FILE* dstFp, FILE* srcFp, unsigned long* pCRC32);
+ /* copy all of "data" into "dstFp" */
+ status_t copyDataToFp(FILE* dstFp,
+ const void* data, size_t size, unsigned long* pCRC32);
+ /* copy some of "srcFp" into "dstFp" */
+ status_t copyPartialFpToFp(FILE* dstFp, FILE* srcFp, long length,
+ unsigned long* pCRC32);
+ /* like memmove(), but on parts of a single file */
+ status_t filemove(FILE* fp, off_t dest, off_t src, size_t n);
+ /* compress all of "srcFp" into "dstFp", using Deflate */
+ status_t compressFpToFp(FILE* dstFp, FILE* srcFp,
+ const void* data, size_t size, unsigned long* pCRC32);
+
+ /* get modification date from a file descriptor */
+ time_t getModTime(int fd);
+
+ /*
+ * We use stdio FILE*, which gives us buffering but makes dealing
+ * with files >2GB awkward. Until we support Zip64, we're fine.
+ */
+ FILE* mZipFp; // Zip file pointer
+
+ /* one of these per file */
+ EndOfCentralDir mEOCD;
+
+ /* did we open this read-only? */
+ bool mReadOnly;
+
+ /* set this when we trash the central dir */
+ bool mNeedCDRewrite;
+
+ /*
+ * One ZipEntry per entry in the zip file. I'm using pointers instead
+ * of objects because it's easier than making operator= work for the
+ * classes and sub-classes.
+ */
+ Vector<ZipEntry*> mEntries;
+};
+
+}; // namespace android
+
+#endif // __LIBS_ZIPFILE_H