15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2011 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 4c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#ifndef THIRD_PARTY_ZLIB_GOOGLE_ZIP_READER_H_ 5c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#define THIRD_PARTY_ZLIB_GOOGLE_ZIP_READER_H_ 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <string> 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/basictypes.h" 105d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)#include "base/callback.h" 11a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)#include "base/files/file.h" 122a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "base/files/file_path.h" 131320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci#include "base/files/file_util.h" 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/memory/scoped_ptr.h" 155d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)#include "base/memory/weak_ptr.h" 16eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch#include "base/time/time.h" 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(USE_SYSTEM_MINIZIP) 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <minizip/unzip.h> 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "third_party/zlib/contrib/minizip/unzip.h" 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace zip { 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// This class is used for reading zip files. A typical use case of this 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// class is to scan entries in a zip file and extract them. The code will 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// look like: 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// ZipReader reader; 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// reader.Open(zip_file_path); 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// while (reader.HasMore()) { 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// reader.OpenCurrentEntryInZip(); 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// reader.ExtractCurrentEntryToDirectory(output_directory_path); 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// reader.AdvanceToNextEntry(); 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// } 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 386d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles)// For simplicity, error checking is omitted in the example code above. The 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// production code should check return values from all of these functions. 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// This calls can also be used for random access of contents in a zip file 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// using LocateAndOpenEntry(). 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class ZipReader { 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 465d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // A callback that is called when the operation is successful. 475d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) typedef base::Closure SuccessCallback; 485d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // A callback that is called when the operation fails. 495d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) typedef base::Closure FailureCallback; 505d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // A callback that is called periodically during the operation with the number 515d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // of bytes that have been processed so far. 525d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) typedef base::Callback<void(int64)> ProgressCallback; 535d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // This class represents information of an entry (file or directory) in 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // a zip file. 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) class EntryInfo { 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EntryInfo(const std::string& filename_in_zip, 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const unz_file_info& raw_file_info); 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns the file path. The path is usually relative like 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // "foo/bar.txt", but if it's absolute, is_unsafe() returns true. 632a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const base::FilePath& file_path() const { return file_path_; } 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns the size of the original file (i.e. after uncompressed). 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns 0 if the entry is a directory. 67010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles) // Note: this value should not be trusted, because it is stored as metadata 68010d83a9304c5a91596085d917d248abff47903aTorne (Richard Coles) // in the zip archive and can be different from the real uncompressed size. 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int64 original_size() const { return original_size_; } 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 715d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // Returns the last modified time. If the time stored in the zip file was 725d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // not valid, the unix epoch will be returned. 735d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // 745d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // The time stored in the zip archive uses the MS-DOS date and time format. 755d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // http://msdn.microsoft.com/en-us/library/ms724247(v=vs.85).aspx 765d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // As such the following limitations apply: 775d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // * only years from 1980 to 2107 can be represented. 785d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // * the time stamp has a 2 second resolution. 795d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // * there's no timezone information, so the time is interpreted as local. 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::Time last_modified() const { return last_modified_; } 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns true if the entry is a directory. 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool is_directory() const { return is_directory_; } 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns true if the entry is unsafe, like having ".." or invalid 865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // UTF-8 characters in its file name, or the file path is absolute. 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool is_unsafe() const { return is_unsafe_; } 885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) private: 902a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const base::FilePath file_path_; 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int64 original_size_; 925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::Time last_modified_; 935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool is_directory_; 945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool is_unsafe_; 955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DISALLOW_COPY_AND_ASSIGN(EntryInfo); 965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) }; 975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ZipReader(); 995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ~ZipReader(); 1005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Opens the zip file specified by |zip_file_path|. Returns true on 1025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // success. 1032a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) bool Open(const base::FilePath& zip_file_path); 1045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1052a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Opens the zip file referred to by the platform file |zip_fd|. 1065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns true on success. 1072a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) bool OpenFromPlatformFile(base::PlatformFile zip_fd); 1085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Opens the zip data stored in |data|. This class uses a weak reference to 1105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // the given sring while extracting files, i.e. the caller should keep the 1115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // string until it finishes extracting files. 1125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool OpenFromString(const std::string& data); 1135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Closes the currently opened zip file. This function is called in the 1155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // destructor of the class, so you usually don't need to call this. 1165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void Close(); 1175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns true if there is at least one entry to read. This function is 1195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // used to scan entries with AdvanceToNextEntry(), like: 1205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // 1215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // while (reader.HasMore()) { 1225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // // Do something with the current file here. 1235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // reader.AdvanceToNextEntry(); 1245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // } 1255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool HasMore(); 1265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Advances the next entry. Returns true on success. 1285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool AdvanceToNextEntry(); 1295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Opens the current entry in the zip file. On success, returns true and 1315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // updates the the current entry state (i.e. current_entry_info() is 1325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // updated). This function should be called before operations over the 1335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // current entry like ExtractCurrentEntryToFile(). 1345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // 1355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Note that there is no CloseCurrentEntryInZip(). The the current entry 1365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // state is reset automatically as needed. 1375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool OpenCurrentEntryInZip(); 1385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Locates an entry in the zip file and opens it. Returns true on 1405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // success. This function internally calls OpenCurrentEntryInZip() on 1415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // success. On failure, current_entry_info() becomes NULL. 1422a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) bool LocateAndOpenEntry(const base::FilePath& path_in_zip); 1435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Extracts the current entry to the given output file path. If the 1455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // current file is a directory, just creates a directory 1465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // instead. Returns true on success. OpenCurrentEntryInZip() must be 1475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // called beforehand. 1485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // 1495d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // This function preserves the timestamp of the original entry. If that 1505d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // timestamp is not valid, the timestamp will be set to the current time. 1512a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) bool ExtractCurrentEntryToFilePath(const base::FilePath& output_file_path); 1525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1535d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // Asynchronously extracts the current entry to the given output file path. 1545d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // If the current entry is a directory it just creates the directory 1555d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // synchronously instead. OpenCurrentEntryInZip() must be called beforehand. 1565d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // success_callback will be called on success and failure_callback will be 1575d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // called on failure. progress_callback will be called at least once. 1585d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // Callbacks will be posted to the current MessageLoop in-order. 1595d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) void ExtractCurrentEntryToFilePathAsync( 1605d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) const base::FilePath& output_file_path, 1615d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) const SuccessCallback& success_callback, 1625d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) const FailureCallback& failure_callback, 1635d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) const ProgressCallback& progress_callback); 1645d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 1655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Extracts the current entry to the given output directory path using 1665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // ExtractCurrentEntryToFilePath(). Sub directories are created as needed 1675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // based on the file path of the current entry. For example, if the file 1685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // path in zip is "foo/bar.txt", and the output directory is "output", 1695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // "output/foo/bar.txt" will be created. 1705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // 1715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns true on success. OpenCurrentEntryInZip() must be called 1725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // beforehand. 1735d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // 1745d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // This function preserves the timestamp of the original entry. If that 1755d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // timestamp is not valid, the timestamp will be set to the current time. 1762a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) bool ExtractCurrentEntryIntoDirectory( 1772a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const base::FilePath& output_directory_path); 1785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(OS_POSIX) 1805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Extracts the current entry by writing directly to a file descriptor. 1815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Does not close the file descriptor. Returns true on success. 1825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool ExtractCurrentEntryToFd(int fd); 1835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 1845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1856d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) // Extracts the current entry into memory. If the current entry is a directory 1866d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) // the |output| parameter is set to the empty string. If the current entry is 1876d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) // a file, the |output| parameter is filled with its contents. Returns true on 1886d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) // success. OpenCurrentEntryInZip() must be called beforehand. 1896d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) // Note: the |output| parameter can be filled with a big amount of data, avoid 1906d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) // passing it around by value, but by reference or pointer. 1916d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) // Note: the value returned by EntryInfo::original_size() cannot be 1926d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) // trusted, so the real size of the uncompressed contents can be different. 1936d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) // Use max_read_bytes to limit the ammount of memory used to carry the entry. 1946d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) // If the real size of the uncompressed data is bigger than max_read_bytes 1956d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) // then false is returned. |max_read_bytes| must be non-zero. 1966d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) bool ExtractCurrentEntryToString( 1976d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) size_t max_read_bytes, 1986d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) std::string* output) const; 1996d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) 2005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns the current entry info. Returns NULL if the current entry is 2015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // not yet opened. OpenCurrentEntryInZip() must be called beforehand. 2025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) EntryInfo* current_entry_info() const { 2035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return current_entry_info_.get(); 2045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns the number of entries in the zip file. 2075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Open() must be called beforehand. 2085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int num_entries() const { return num_entries_; } 2095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) private: 2115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Common code used both in Open and OpenFromFd. 2125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool OpenInternal(); 2135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Resets the internal state. 2155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void Reset(); 2165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2175d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // Extracts a chunk of the file to the target. Will post a task for the next 2185d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // chunk and success/failure/progress callbacks as necessary. 219a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) void ExtractChunk(base::File target_file, 2205d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) const SuccessCallback& success_callback, 2215d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) const FailureCallback& failure_callback, 2225d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) const ProgressCallback& progress_callback, 2235d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) const int64 offset); 2245d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 2255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) unzFile zip_file_; 2265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int num_entries_; 2275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool reached_end_; 2285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) scoped_ptr<EntryInfo> current_entry_info_; 2295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2305d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) base::WeakPtrFactory<ZipReader> weak_ptr_factory_; 2315d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 2325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DISALLOW_COPY_AND_ASSIGN(ZipReader); 2335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 2345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace zip 2365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 237c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#endif // THIRD_PARTY_ZLIB_GOOGLE_ZIP_READER_H_ 238