Upgrading lzma_sdk to version 9.20.

chrome/installer/util/lzma_util.cc

Index: chrome/installer/util/lzma_util.cc
===================================================================
--- chrome/installer/util/lzma_util.cc	(revision 79229)
+++ chrome/installer/util/lzma_util.cc	(working copy)
@@ -1,4 +1,4 @@
-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Copyright (c) 2011 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.
 
@@ -9,67 +9,14 @@
 #include "base/utf_string_conversions.h"
 
 extern "C" {
-#include "third_party/lzma_sdk/Archive/7z/7zExtract.h"
-#include "third_party/lzma_sdk/Archive/7z/7zIn.h"
-#include "third_party/lzma_sdk/7zCrc.h"
+#include "third_party/lzma_sdk/C/7z.h"
+#include "third_party/lzma_sdk/C/7zAlloc.h"
+#include "third_party/lzma_sdk/C/7zCrc.h"
+#include "third_party/lzma_sdk/C/7zFile.h"
+#include "third_party/lzma_sdk/C/7zVersion.h"
 }
 
 
-namespace {
-
-typedef struct _CFileInStream {
-  ISzInStream InStream;
-  HANDLE File;
-} CFileInStream;
-
-
-size_t LzmaReadFile(HANDLE file, void *data, size_t size) {
-  if (size == 0)
-    return 0;
-
-  size_t processedSize = 0;
-  do {
-    DWORD processedLoc = 0;
-    BOOL res = ReadFile(file, data, (DWORD) size, &processedLoc, NULL);
-    data = (void *)((unsigned char *) data + processedLoc);
-    size -= processedLoc;
-    processedSize += processedLoc;
-    if (!res || processedLoc == 0)
-      break;
-  } while (size > 0);
-
-  return processedSize;
-}
-
-SZ_RESULT SzFileSeekImp(void *object, CFileSize pos) {
-  CFileInStream *s = (CFileInStream *) object;
-  LARGE_INTEGER value;
-  value.LowPart = (DWORD) pos;
-  value.HighPart = (LONG) ((UInt64) pos >> 32);
-  value.LowPart = SetFilePointer(s->File, value.LowPart, &value.HighPart,
-                                 FILE_BEGIN);
-  return ((value.LowPart == 0xFFFFFFFF) && (GetLastError() != NO_ERROR)) ?
-      SZE_FAIL : SZ_OK;
-}
-
-SZ_RESULT SzFileReadImp(void *object, void **buffer,
-                        size_t maxRequiredSize, size_t *processedSize) {
-  const int kBufferSize = 1 << 12;
-  static Byte g_Buffer[kBufferSize];
-  if (maxRequiredSize > kBufferSize)
-    maxRequiredSize = kBufferSize;
-
-  CFileInStream *s = (CFileInStream *) object;
-  size_t processedSizeLoc;
-  processedSizeLoc = LzmaReadFile(s->File, g_Buffer, maxRequiredSize);
-  *buffer = g_Buffer;
-  if (processedSize != 0)
-    *processedSize = processedSizeLoc;
-  return SZ_OK;
-}
-
-}  // namespace
-
 // static
 int32 LzmaUtil::UnPackArchive(const std::wstring& archive,
                              const std::wstring& output_dir,
@@ -122,24 +69,29 @@
     return ERROR_INVALID_HANDLE;
 
   CFileInStream archiveStream;

[robertshield, 2011/03/25 02:34:37]

archiveStream -> archive_stream

[bradn, 2011/03/25 02:53:42]

Done.

+  CLookToRead lookStream;

[robertshield, 2011/03/25 02:34:37]

lookStream -> look_stream

[bradn, 2011/03/25 02:53:42]

Done.

[bradn, 2011/03/25 02:53:42]

Done.

   ISzAlloc allocImp;

[robertshield, 2011/03/25 02:34:37]

alloc_imp

[bradn, 2011/03/25 02:53:42]

Done.

   ISzAlloc allocTempImp;

[robertshield, 2011/03/25 02:34:37]

alloc_temp_imp

[bradn, 2011/03/25 02:53:42]

Done.

-  CArchiveDatabaseEx db;
+  CSzArEx db;
   DWORD ret = NO_ERROR;
+  UInt16 *name = NULL;

[robertshield, 2011/03/25 02:34:37]

nit: UInt16* name

[bradn, 2011/03/25 02:53:42]

Done.

+  size_t nameLen = 0;

[robertshield, 2011/03/25 02:34:37]

name_len

[bradn, 2011/03/25 02:53:42]

Done.

 
-  archiveStream.File = archive_handle_;
-  archiveStream.InStream.Read = SzFileReadImp;
-  archiveStream.InStream.Seek = SzFileSeekImp;
+  FileInStream_CreateVTable(&archiveStream);
+  LookToRead_CreateVTable(&lookStream, False);
+  lookStream.realStream = &archiveStream.s;
+  LookToRead_Init(&lookStream);
+
   allocImp.Alloc = SzAlloc;
   allocImp.Free = SzFree;
   allocTempImp.Alloc = SzAllocTemp;
   allocTempImp.Free = SzFreeTemp;
 
   CrcGenerateTable();
-  SzArDbExInit(&db);
-  if ((ret = SzArchiveOpen(&archiveStream.InStream, &db,
-                           &allocImp, &allocTempImp)) != SZ_OK) {
-    LOG(ERROR) << L"Error returned by SzArchiveOpen: " << ret;
+  SzArEx_Init(&db);
+  if ((ret = SzArEx_Open(&db, &lookStream.s,
+                         &allocImp, &allocTempImp)) != SZ_OK) {
+    LOG(ERROR) << L"Error returned by SzArEx_Open: " << ret;
     return ret;
   }
 
@@ -147,25 +99,43 @@
   UInt32 blockIndex = 0xFFFFFFFF; // can have any value if outBuffer = 0
   size_t outBufferSize = 0;  // can have any value if outBuffer = 0
 
-  for (unsigned int i = 0; i < db.Database.NumFiles; i++) {
+  for (unsigned int i = 0; i < db.db.NumFiles; i++) {
     DWORD written;
     size_t offset;
     size_t outSizeProcessed;
-    CFileItem *f = db.Database.Files + i;
+    CSzFileItem *f = db.db.Files + i;

[robertshield, 2011/03/25 02:34:37]

CSzFileItem* f =...

[bradn, 2011/03/25 02:53:42]

Done.

 
-    if ((ret = SzExtract(&archiveStream.InStream, &db, i, &blockIndex,
-                         &outBuffer, &outBufferSize, &offset, &outSizeProcessed,
-                         &allocImp, &allocTempImp)) != SZ_OK) {
-      LOG(ERROR) << L"Error returned by SzExtract: " << ret;
+    if ((ret = SzArEx_Extract(&db, &lookStream.s, i, &blockIndex,
+                              &outBuffer, &outBufferSize, &offset,
+                              &outSizeProcessed, &allocImp,
+                              &allocTempImp)) != SZ_OK) {
+      LOG(ERROR) << L"Error returned by SzArEx_Extract: " << ret;
       break;
     }
 
-    FilePath file_path = FilePath(location).Append(UTF8ToWide(f->Name));
+    size_t len = SzArEx_GetFileNameUtf16(&db, i, NULL);
+    if (len > nameLen) {

[robertshield, 2011/03/25 02:34:37]

nameLen here can only be 0, and this is also its first use. Perhaps move the
initial definition of name_len down to line 116?

[bradn, 2011/03/25 02:53:42]

Rearranged.

+      SzFree(NULL, name);
+      nameLen = len;
+      name = (UInt16 *)SzAlloc(NULL, nameLen * sizeof(UInt16));

[robertshield, 2011/03/25 02:34:37]

According to style guide, should be reinterpret_cast<UInt16*>(...)

[bradn, 2011/03/25 02:53:42]

Done.

+      if (!name) {
+        LOG(ERROR) << L"Can't allocate memory for filename string.";
+        break;
+      }
+    }
+    SzArEx_GetFileNameUtf16(&db, i, name);
+
+    std::wstring wname;
+    if (!UTF16ToWide(reinterpret_cast<char16*>(name), len - 1, &wname)) {
+      LOG(ERROR) << L"Can't convert filename string.";
+      break;
+    }
+    FilePath file_path = FilePath(location).Append(wname);
     if (output_file)
       *output_file = file_path.value();
 
     // If archive entry is directory create it and move on to the next entry.
-    if (f->IsDirectory) {
+    if (f->IsDir) {
       CreateDirectory(file_path);
       continue;
     }
@@ -190,9 +160,9 @@
       break;
     }
 
-    if (f->IsLastWriteTimeDefined) {
+    if (f->MTimeDefined) {
       if (!SetFileTime(hFile, NULL, NULL,
-                       (const FILETIME *)&(f->LastWriteTime))) {
+                       (const FILETIME *)&(f->MTime))) {

[robertshield, 2011/03/25 02:34:37]

no C-style casts

[bradn, 2011/03/25 02:53:42]

Done.

         ret = GetLastError();
         CloseHandle(hFile);
         LOG(ERROR) << L"Error returned by SetFileTime: " << ret;
@@ -206,8 +176,8 @@
     }
   }  // for loop
 
-  allocImp.Free(outBuffer);
-  SzArDbExFree(&db, allocImp.Free);
+  SzFree(NULL, name);
+  SzArEx_Free(&db, &allocImp);
   return ret;
 }