c2b77d2fad
Change the way zip archives are handled. This is necessary to deal with very large (~1GB) APK files, for which our current approach of mapping the entire file falls over. We now do the classic scavenger hunt for the End Of Central Directory magic on a buffer of data read from the file, instead of a memory-mapped section. We use what we find to create a map that covers the Central Directory only. If the caller is interested in unpacking the file contents, we have to do an additional file read to discover the size of the Local File Header section so we can skip past it. This is based on Change I745fb15abb in the dalvik tree. Both implementations share a common ancestry, but the cost of unifying them outweighs the benefits of wrapping C calls. Change-Id: Iddacb50fe913917c2845708a530872d65fdbe620
54 lines
1.8 KiB
C++
54 lines
1.8 KiB
C++
/*
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* Copyright (C) 2008 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <utils/ZipFileCRO.h>
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#include <utils/ZipFileRO.h>
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using namespace android;
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ZipFileCRO ZipFileXRO_open(const char* path) {
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ZipFileRO* zip = new ZipFileRO();
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if (zip->open(path) == NO_ERROR) {
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return (ZipFileCRO)zip;
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}
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return NULL;
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}
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void ZipFileCRO_destroy(ZipFileCRO zipToken) {
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ZipFileRO* zip = (ZipFileRO*)zipToken;
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delete zip;
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}
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ZipEntryCRO ZipFileCRO_findEntryByName(ZipFileCRO zipToken,
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const char* fileName) {
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ZipFileRO* zip = (ZipFileRO*)zipToken;
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return (ZipEntryCRO)zip->findEntryByName(fileName);
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}
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bool ZipFileCRO_getEntryInfo(ZipFileCRO zipToken, ZipEntryRO entryToken,
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int* pMethod, size_t* pUncompLen,
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size_t* pCompLen, off_t* pOffset, long* pModWhen, long* pCrc32) {
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ZipFileRO* zip = (ZipFileRO*)zipToken;
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ZipEntryRO entry = (ZipEntryRO)entryToken;
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return zip->getEntryInfo(entry, pMethod, pUncompLen, pCompLen, pOffset,
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pModWhen, pCrc32);
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}
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bool ZipFileCRO_uncompressEntry(ZipFileCRO zipToken, ZipEntryRO entryToken, int fd) {
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ZipFileRO* zip = (ZipFileRO*)zipToken;
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ZipEntryRO entry = (ZipEntryRO)entryToken;
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return zip->uncompressEntry(entry, fd);
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}
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