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authorThe Android Open Source Project <initial-contribution@android.com>2009-03-03 18:28:14 -0800
committerThe Android Open Source Project <initial-contribution@android.com>2009-03-03 18:28:14 -0800
commitffb48f64fec674c6dd923eb8b1eb3f743e05a8ba (patch)
tree4b825dc642cb6eb9a060e54bf8d69288fbee4904 /minzip/Zip.h
parentd4ae69739ebb67374d62229829df07bf2de85103 (diff)
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diff --git a/minzip/Zip.h b/minzip/Zip.h
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-/*
- * Copyright 2006 The Android Open Source Project
- *
- * Simple Zip archive support.
- */
-#ifndef _MINZIP_ZIP
-#define _MINZIP_ZIP
-
-#include "inline_magic.h"
-
-#include <stdlib.h>
-#include <utime.h>
-
-#include "Hash.h"
-#include "SysUtil.h"
-
-/*
- * One entry in the Zip archive. Treat this as opaque -- use accessors below.
- *
- * TODO: we're now keeping the pages mapped so we don't have to copy the
- * filename. We can change the accessors to retrieve the various pieces
- * directly from the source file instead of copying them out, for a very
- * slight speed hit and a modest reduction in memory usage.
- */
-typedef struct ZipEntry {
- unsigned int fileNameLen;
- const char* fileName; // not null-terminated
- long offset;
- long compLen;
- long uncompLen;
- int compression;
- long modTime;
- long crc32;
- int versionMadeBy;
- long externalFileAttributes;
-} ZipEntry;
-
-/*
- * One Zip archive. Treat as opaque.
- */
-typedef struct ZipArchive {
- int fd;
- unsigned int numEntries;
- ZipEntry* pEntries;
- HashTable* pHash; // maps file name to ZipEntry
- MemMapping map;
-} ZipArchive;
-
-/*
- * Represents a non-NUL-terminated string,
- * which is how entry names are stored.
- */
-typedef struct {
- const char *str;
- size_t len;
-} UnterminatedString;
-
-/*
- * Open a Zip archive.
- *
- * On success, returns 0 and populates "pArchive". Returns nonzero errno
- * value on failure.
- */
-int mzOpenZipArchive(const char* fileName, ZipArchive* pArchive);
-
-/*
- * Close archive, releasing resources associated with it.
- *
- * Depending on the implementation this could unmap pages used by classes
- * stored in a Jar. This should only be done after unloading classes.
- */
-void mzCloseZipArchive(ZipArchive* pArchive);
-
-
-/*
- * Find an entry in the Zip archive, by name.
- */
-const ZipEntry* mzFindZipEntry(const ZipArchive* pArchive,
- const char* entryName);
-
-/*
- * Get the number of entries in the Zip archive.
- */
-INLINE unsigned int mzZipEntryCount(const ZipArchive* pArchive) {
- return pArchive->numEntries;
-}
-
-/*
- * Get an entry by index. Returns NULL if the index is out-of-bounds.
- */
-INLINE const ZipEntry*
-mzGetZipEntryAt(const ZipArchive* pArchive, unsigned int index)
-{
- if (index < pArchive->numEntries) {
- return pArchive->pEntries + index;
- }
- return NULL;
-}
-
-/*
- * Get the index number of an entry in the archive.
- */
-INLINE unsigned int
-mzGetZipEntryIndex(const ZipArchive *pArchive, const ZipEntry *pEntry) {
- return pEntry - pArchive->pEntries;
-}
-
-/*
- * Simple accessors.
- */
-INLINE UnterminatedString mzGetZipEntryFileName(const ZipEntry* pEntry) {
- UnterminatedString ret;
- ret.str = pEntry->fileName;
- ret.len = pEntry->fileNameLen;
- return ret;
-}
-INLINE long mzGetZipEntryOffset(const ZipEntry* pEntry) {
- return pEntry->offset;
-}
-INLINE long mzGetZipEntryUncompLen(const ZipEntry* pEntry) {
- return pEntry->uncompLen;
-}
-INLINE long mzGetZipEntryModTime(const ZipEntry* pEntry) {
- return pEntry->modTime;
-}
-INLINE long mzGetZipEntryCrc32(const ZipEntry* pEntry) {
- return pEntry->crc32;
-}
-bool mzIsZipEntrySymlink(const ZipEntry* pEntry);
-
-
-/*
- * Type definition for the callback function used by
- * mzProcessZipEntryContents().
- */
-typedef bool (*ProcessZipEntryContentsFunction)(const unsigned char *data,
- int dataLen, void *cookie);
-
-/*
- * Stream the uncompressed data through the supplied function,
- * passing cookie to it each time it gets called. processFunction
- * may be called more than once.
- *
- * If processFunction returns false, the operation is abandoned and
- * mzProcessZipEntryContents() immediately returns false.
- *
- * This is useful for calculating the hash of an entry's uncompressed contents.
- */
-bool mzProcessZipEntryContents(const ZipArchive *pArchive,
- const ZipEntry *pEntry, ProcessZipEntryContentsFunction processFunction,
- void *cookie);
-
-/*
- * Read an entry into a buffer allocated by the caller.
- */
-bool mzReadZipEntry(const ZipArchive* pArchive, const ZipEntry* pEntry,
- char* buf, int bufLen);
-
-/*
- * Check the CRC on this entry; return true if it is correct.
- * May do other internal checks as well.
- */
-bool mzIsZipEntryIntact(const ZipArchive *pArchive, const ZipEntry *pEntry);
-
-/*
- * Inflate and write an entry to a file.
- */
-bool mzExtractZipEntryToFile(const ZipArchive *pArchive,
- const ZipEntry *pEntry, int fd);
-
-/*
- * Inflate all entries under zipDir to the directory specified by
- * targetDir, which must exist and be a writable directory.
- *
- * The immediate children of zipDir will become the immediate
- * children of targetDir; e.g., if the archive contains the entries
- *
- * a/b/c/one
- * a/b/c/two
- * a/b/c/d/three
- *
- * and mzExtractRecursive(a, "a/b/c", "/tmp", ...) is called, the resulting
- * files will be
- *
- * /tmp/one
- * /tmp/two
- * /tmp/d/three
- *
- * flags is zero or more of the following:
- *
- * MZ_EXTRACT_FILES_ONLY - only unpack files, not directories or symlinks
- * MZ_EXTRACT_DRY_RUN - don't do anything, but do invoke the callback
- *
- * If timestamp is non-NULL, file timestamps will be set accordingly.
- *
- * If callback is non-NULL, it will be invoked with each unpacked file.
- *
- * Returns true on success, false on failure.
- */
-enum { MZ_EXTRACT_FILES_ONLY = 1, MZ_EXTRACT_DRY_RUN = 2 };
-bool mzExtractRecursive(const ZipArchive *pArchive,
- const char *zipDir, const char *targetDir,
- int flags, const struct utimbuf *timestamp,
- void (*callback)(const char *fn, void*), void *cookie);
-
-#endif /*_MINZIP_ZIP*/