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diff --git a/include/utils/ZipEntry.h b/include/utils/ZipEntry.h
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-/*
- * 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.
- */
-
-//
-// Zip archive entries.
-//
-// The ZipEntry class is tightly meshed with the ZipFile class.
-//
-#ifndef __LIBS_ZIPENTRY_H
-#define __LIBS_ZIPENTRY_H
-
-#include "Errors.h"
-
-#include <stdlib.h>
-#include <stdio.h>
-
-namespace android {
-
-class ZipFile;
-
-/*
- * ZipEntry objects represent a single entry in a Zip archive.
- *
- * You can use one of these to get or set information about an entry, but
- * there are no functions here for accessing the data itself. (We could
- * tuck a pointer to the ZipFile in here for convenience, but that raises
- * the likelihood of using ZipEntry objects after discarding the ZipFile.)
- *
- * File information is stored in two places: next to the file data (the Local
- * File Header, and possibly a Data Descriptor), and at the end of the file
- * (the Central Directory Entry). The two must be kept in sync.
- */
-class ZipEntry {
-public:
- friend class ZipFile;
-
- ZipEntry(void)
- : mDeleted(false), mMarked(false)
- {}
- ~ZipEntry(void) {}
-
- /*
- * Returns "true" if the data is compressed.
- */
- bool isCompressed(void) const {
- return mCDE.mCompressionMethod != kCompressStored;
- }
- int getCompressionMethod(void) const { return mCDE.mCompressionMethod; }
-
- /*
- * Return the uncompressed length.
- */
- off_t getUncompressedLen(void) const { return mCDE.mUncompressedSize; }
-
- /*
- * Return the compressed length. For uncompressed data, this returns
- * the same thing as getUncompresesdLen().
- */
- off_t getCompressedLen(void) const { return mCDE.mCompressedSize; }
-
- /*
- * Return the absolute file offset of the start of the compressed or
- * uncompressed data.
- */
- off_t getFileOffset(void) const {
- return mCDE.mLocalHeaderRelOffset +
- LocalFileHeader::kLFHLen +
- mLFH.mFileNameLength +
- mLFH.mExtraFieldLength;
- }
-
- /*
- * Return the data CRC.
- */
- unsigned long getCRC32(void) const { return mCDE.mCRC32; }
-
- /*
- * Return file modification time in UNIX seconds-since-epoch.
- */
- time_t getModWhen(void) const;
-
- /*
- * Return the archived file name.
- */
- const char* getFileName(void) const { return (const char*) mCDE.mFileName; }
-
- /*
- * Application-defined "mark". Can be useful when synchronizing the
- * contents of an archive with contents on disk.
- */
- bool getMarked(void) const { return mMarked; }
- void setMarked(bool val) { mMarked = val; }
-
- /*
- * Some basic functions for raw data manipulation. "LE" means
- * Little Endian.
- */
- static inline unsigned short getShortLE(const unsigned char* buf) {
- return buf[0] | (buf[1] << 8);
- }
- static inline unsigned long getLongLE(const unsigned char* buf) {
- return buf[0] | (buf[1] << 8) | (buf[2] << 16) | (buf[3] << 24);
- }
- static inline void putShortLE(unsigned char* buf, short val) {
- buf[0] = (unsigned char) val;
- buf[1] = (unsigned char) (val >> 8);
- }
- static inline void putLongLE(unsigned char* buf, long val) {
- buf[0] = (unsigned char) val;
- buf[1] = (unsigned char) (val >> 8);
- buf[2] = (unsigned char) (val >> 16);
- buf[3] = (unsigned char) (val >> 24);
- }
-
- /* defined for Zip archives */
- enum {
- kCompressStored = 0, // no compression
- // shrunk = 1,
- // reduced 1 = 2,
- // reduced 2 = 3,
- // reduced 3 = 4,
- // reduced 4 = 5,
- // imploded = 6,
- // tokenized = 7,
- kCompressDeflated = 8, // standard deflate
- // Deflate64 = 9,
- // lib imploded = 10,
- // reserved = 11,
- // bzip2 = 12,
- };
-
- /*
- * Deletion flag. If set, the entry will be removed on the next
- * call to "flush".
- */
- bool getDeleted(void) const { return mDeleted; }
-
-protected:
- /*
- * Initialize the structure from the file, which is pointing at
- * our Central Directory entry.
- */
- status_t initFromCDE(FILE* fp);
-
- /*
- * Initialize the structure for a new file. We need the filename
- * and comment so that we can properly size the LFH area. The
- * filename is mandatory, the comment is optional.
- */
- void initNew(const char* fileName, const char* comment);
-
- /*
- * Initialize the structure with the contents of a ZipEntry from
- * another file.
- */
- status_t initFromExternal(const ZipFile* pZipFile, const ZipEntry* pEntry);
-
- /*
- * Add some pad bytes to the LFH. We do this by adding or resizing
- * the "extra" field.
- */
- status_t addPadding(int padding);
-
- /*
- * Set information about the data for this entry.
- */
- void setDataInfo(long uncompLen, long compLen, unsigned long crc32,
- int compressionMethod);
-
- /*
- * Set the modification date.
- */
- void setModWhen(time_t when);
-
- /*
- * Return the offset of the local file header.
- */
- off_t getLFHOffset(void) const { return mCDE.mLocalHeaderRelOffset; }
-
- /*
- * Set the offset of the local file header, relative to the start of
- * the current file.
- */
- void setLFHOffset(off_t offset) {
- mCDE.mLocalHeaderRelOffset = (long) offset;
- }
-
- /* mark for deletion; used by ZipFile::remove() */
- void setDeleted(void) { mDeleted = true; }
-
-private:
- /* these are private and not defined */
- ZipEntry(const ZipEntry& src);
- ZipEntry& operator=(const ZipEntry& src);
-
- /* returns "true" if the CDE and the LFH agree */
- bool compareHeaders(void) const;
- void copyCDEtoLFH(void);
-
- bool mDeleted; // set if entry is pending deletion
- bool mMarked; // app-defined marker
-
- /*
- * Every entry in the Zip archive starts off with one of these.
- */
- class LocalFileHeader {
- public:
- LocalFileHeader(void) :
- mVersionToExtract(0),
- mGPBitFlag(0),
- mCompressionMethod(0),
- mLastModFileTime(0),
- mLastModFileDate(0),
- mCRC32(0),
- mCompressedSize(0),
- mUncompressedSize(0),
- mFileNameLength(0),
- mExtraFieldLength(0),
- mFileName(NULL),
- mExtraField(NULL)
- {}
- virtual ~LocalFileHeader(void) {
- delete[] mFileName;
- delete[] mExtraField;
- }
-
- status_t read(FILE* fp);
- status_t write(FILE* fp);
-
- // unsigned long mSignature;
- unsigned short mVersionToExtract;
- unsigned short mGPBitFlag;
- unsigned short mCompressionMethod;
- unsigned short mLastModFileTime;
- unsigned short mLastModFileDate;
- unsigned long mCRC32;
- unsigned long mCompressedSize;
- unsigned long mUncompressedSize;
- unsigned short mFileNameLength;
- unsigned short mExtraFieldLength;
- unsigned char* mFileName;
- unsigned char* mExtraField;
-
- enum {
- kSignature = 0x04034b50,
- kLFHLen = 30, // LocalFileHdr len, excl. var fields
- };
-
- void dump(void) const;
- };
-
- /*
- * Every entry in the Zip archive has one of these in the "central
- * directory" at the end of the file.
- */
- class CentralDirEntry {
- public:
- CentralDirEntry(void) :
- mVersionMadeBy(0),
- mVersionToExtract(0),
- mGPBitFlag(0),
- mCompressionMethod(0),
- mLastModFileTime(0),
- mLastModFileDate(0),
- mCRC32(0),
- mCompressedSize(0),
- mUncompressedSize(0),
- mFileNameLength(0),
- mExtraFieldLength(0),
- mFileCommentLength(0),
- mDiskNumberStart(0),
- mInternalAttrs(0),
- mExternalAttrs(0),
- mLocalHeaderRelOffset(0),
- mFileName(NULL),
- mExtraField(NULL),
- mFileComment(NULL)
- {}
- virtual ~CentralDirEntry(void) {
- delete[] mFileName;
- delete[] mExtraField;
- delete[] mFileComment;
- }
-
- status_t read(FILE* fp);
- status_t write(FILE* fp);
-
- // unsigned long mSignature;
- unsigned short mVersionMadeBy;
- unsigned short mVersionToExtract;
- unsigned short mGPBitFlag;
- unsigned short mCompressionMethod;
- unsigned short mLastModFileTime;
- unsigned short mLastModFileDate;
- unsigned long mCRC32;
- unsigned long mCompressedSize;
- unsigned long mUncompressedSize;
- unsigned short mFileNameLength;
- unsigned short mExtraFieldLength;
- unsigned short mFileCommentLength;
- unsigned short mDiskNumberStart;
- unsigned short mInternalAttrs;
- unsigned long mExternalAttrs;
- unsigned long mLocalHeaderRelOffset;
- unsigned char* mFileName;
- unsigned char* mExtraField;
- unsigned char* mFileComment;
-
- void dump(void) const;
-
- enum {
- kSignature = 0x02014b50,
- kCDELen = 46, // CentralDirEnt len, excl. var fields
- };
- };
-
- enum {
- //kDataDescriptorSignature = 0x08074b50, // currently unused
- kDataDescriptorLen = 16, // four 32-bit fields
-
- kDefaultVersion = 20, // need deflate, nothing much else
- kDefaultMadeBy = 0x0317, // 03=UNIX, 17=spec v2.3
- kUsesDataDescr = 0x0008, // GPBitFlag bit 3
- };
-
- LocalFileHeader mLFH;
- CentralDirEntry mCDE;
-};
-
-}; // namespace android
-
-#endif // __LIBS_ZIPENTRY_H
generated by cgit v1.1 at 2024-05-23 07:43:02 +0000