New Zip::ZipFromMemory API.

third_party/zlib/google/zip.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "third_party/zlib/google/zip.h"
 
 #include <string>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/file_util.h"
 #include "base/files/file_enumerator.h"
 #include "base/logging.h"
 #include "base/strings/string16.h"
 #include "base/strings/string_util.h"
 #include "net/base/file_stream.h"
 #include "third_party/zlib/google/zip_internal.h"
 #include "third_party/zlib/google/zip_reader.h"
 
 #if defined(USE_SYSTEM_MINIZIP)
 #include <minizip/unzip.h>
 #include <minizip/zip.h>
 #else
 #include "third_party/zlib/contrib/minizip/unzip.h"
 #include "third_party/zlib/contrib/minizip/zip.h"
 #endif
 
 namespace {
 
-// Returns a zip_fileinfo struct with the time represented by |file_time|.
-zip_fileinfo TimeToZipFileInfo(const base::Time& file_time) {
-  base::Time::Exploded file_time_parts;
-  file_time.LocalExplode(&file_time_parts);
-
-  zip_fileinfo zip_info = {};
-  if (file_time_parts.year >= 1980) {
-    // This if check works around the handling of the year value in
-    // contrib/minizip/zip.c in function zip64local_TmzDateToDosDate
-    // It assumes that dates below 1980 are in the double digit format.
-    // Hence the fail safe option is to leave the date unset. Some programs
-    // might show the unset date as 1980-0-0 which is invalid.
-    zip_info.tmz_date.tm_year = file_time_parts.year;
-    zip_info.tmz_date.tm_mon = file_time_parts.month - 1;
-    zip_info.tmz_date.tm_mday = file_time_parts.day_of_month;
-    zip_info.tmz_date.tm_hour = file_time_parts.hour;
-    zip_info.tmz_date.tm_min = file_time_parts.minute;
-    zip_info.tmz_date.tm_sec = file_time_parts.second;
-  }
-
-  return zip_info;
-}
-
-// Returns a zip_fileinfo with the last modification date of |path| set.
-zip_fileinfo GetFileInfoForZipping(const base::FilePath& path) {
-  base::Time file_time;
-  base::File::Info file_info;
-  if (base::GetFileInfo(path, &file_info))
-    file_time = file_info.last_modified;
-  return TimeToZipFileInfo(file_time);
-}
-
 bool AddFileToZip(zipFile zip_file, const base::FilePath& src_dir) {
   net::FileStream stream(NULL);
   int flags = base::PLATFORM_FILE_OPEN | base::PLATFORM_FILE_READ;
   if (stream.OpenSync(src_dir, flags) != 0) {
     DLOG(ERROR) << "Could not open stream for path "
                 << src_dir.value();
     return false;
   }
 
   int num_bytes;
@@ skipping 19 matching lines @@
   DCHECK(result);
   std::string str_path = relative_path.AsUTF8Unsafe();
 #if defined(OS_WIN)
   ReplaceSubstringsAfterOffset(&str_path, 0u, "\\", "/");
 #endif
 
   bool is_directory = base::DirectoryExists(path);
   if (is_directory)
     str_path += "/";
 
-  // Section 4.4.4 http://www.pkware.com/documents/casestudies/APPNOTE.TXT
-  // Setting the Language encoding flag so the file is told to be in utf-8.
-  const uLong LANGUAGE_ENCODING_FLAG = 0x1 << 11;
-
-  zip_fileinfo file_info = GetFileInfoForZipping(path);
-
-  if (ZIP_OK != zipOpenNewFileInZip4(
-                    zip_file,  // file
-                    str_path.c_str(),  // filename
-                    &file_info,  // zipfi
-                    NULL,  // extrafield_local,
-                    0u,  // size_extrafield_local
-                    NULL,  // extrafield_global
-                    0u,  // size_extrafield_global
-                    NULL,  // comment
-                    Z_DEFLATED,  // method
-                    Z_DEFAULT_COMPRESSION,  // level
-                    0,  // raw
-                    -MAX_WBITS,  // windowBits
-                    DEF_MEM_LEVEL,  // memLevel
-                    Z_DEFAULT_STRATEGY,  // strategy
-                    NULL,  // password
-                    0,  // crcForCrypting
-                    0,  // versionMadeBy
-                    LANGUAGE_ENCODING_FLAG)) {  // flagBase
-    DLOG(ERROR) << "Could not open zip file entry " << str_path;
+  zip_fileinfo file_info = zip::internal::GetFileInfoForZipping(path);
+  if (!zip::internal::ZipOpenNewFileInZipWrapper(
+           zip_file, str_path, &file_info))
     return false;
-  }
 
   bool success = true;
   if (!is_directory) {
     success = AddFileToZip(zip_file, path);
   }
 
   if (ZIP_OK != zipCloseFileInZip(zip_file)) {
     DLOG(ERROR) << "Could not close zip file entry " << str_path;
     return false;
   }
@@ skipping 51 matching lines @@
                                               APPEND_STATUS_CREATE);
 
   if (!zip_file) {
     DLOG(WARNING) << "couldn't create file " << dest_file.value();
     return false;
   }
 
   bool success = true;
   base::FileEnumerator file_enumerator(src_dir, true /* recursive */,
       base::FileEnumerator::FILES | base::FileEnumerator::DIRECTORIES);
-  for (base::FilePath path = file_enumerator.Next(); !path.value().empty();
+  for (base::FilePath path = file_enumerator.Next();
+      !path.value().empty() && success;
        path = file_enumerator.Next()) {
     if (!filter_cb.Run(path)) {
       continue;
     }
 
     if (!AddEntryToZip(zip_file, path, src_dir)) {
       success = false;
-      return false;
     }
   }
 
   if (ZIP_OK != zipClose(zip_file, NULL)) {
     DLOG(ERROR) << "Error closing zip file " << dest_file.value();
     return false;
   }
 
   return success;
 }
@@ skipping 36 matching lines @@
   if (ZIP_OK != zipClose(zip_file, NULL)) {
     DLOG(ERROR) << "Error closing zip file for fd " << dest_fd;
     success = false;
   }
 
   return success;
 }
 #endif  // defined(OS_POSIX)
 
 }  // namespace zip