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Diffstat (limited to 'include/utils/ZipFile.h')
| -rw-r--r-- | include/utils/ZipFile.h | 269 |
1 files changed, 0 insertions, 269 deletions
diff --git a/include/utils/ZipFile.h b/include/utils/ZipFile.h deleted file mode 100644 index 44df5bb..0000000 --- a/include/utils/ZipFile.h +++ /dev/null @@ -1,269 +0,0 @@ -/* - * 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 |