The Tor Browser: xpcom/build/FileLocation.cpp@6474c204b198 (annotated)

xpcom/build/FileLocation.cpp@6474c204b198 (annotated)

xpcom/build/FileLocation.cpp

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 #include "FileLocation.h"
 #include "nsZipArchive.h"
 #include "nsURLHelper.h"
 namespace mozilla {
 FileLocation::FileLocation()
 {
 }
 FileLocation::~FileLocation()
 {
 }
 FileLocation::FileLocation(nsIFile* file)
 {
   Init(file);
 }
 FileLocation::FileLocation(nsIFile* file, const char *path)
 {
   Init(file, path);
 }
 FileLocation::FileLocation(const FileLocation &file, const char *path)
 {
   if (file.IsZip()) {
     if (file.mBaseFile) {
       Init(file.mBaseFile, file.mPath.get());
     } else {
       Init(file.mBaseZip, file.mPath.get());
     }
     if (path) {
       int32_t i = mPath.RFindChar('/');
       if (kNotFound == i) {
         mPath.Truncate(0);
       } else {
         mPath.Truncate(i + 1);
       }
       mPath += path;
     }
   } else {
     if (path) {
       nsCOMPtr<nsIFile> cfile;
       file.mBaseFile->GetParent(getter_AddRefs(cfile));
 #if defined(XP_WIN)
       nsAutoCString pathStr(path);
       char *p;
       uint32_t len = pathStr.GetMutableData(&p);
       for (; len; ++p, --len) {
         if ('/' == *p) {
             *p = '\\';
         }
       }
       cfile->AppendRelativeNativePath(pathStr);
 #else
       cfile->AppendRelativeNativePath(nsDependentCString(path));
 #endif
       Init(cfile);
     } else {
       Init(file.mBaseFile);
     }
   }
 }
 void
 FileLocation::Init(nsIFile* file)
 {
   mBaseZip = nullptr;
   mBaseFile = file;
   mPath.Truncate();
 }
 void
 FileLocation::Init(nsIFile* file, const char* path)
 {
   mBaseZip = nullptr;
   mBaseFile = file;
   mPath = path;
 }
 void
 FileLocation::Init(nsZipArchive* zip, const char* path)
 {
   mBaseZip = zip;
   mBaseFile = nullptr;
   mPath = path;
 }
 void
 FileLocation::GetURIString(nsACString &result) const
 {
   if (mBaseFile) {
     net_GetURLSpecFromActualFile(mBaseFile, result);
   } else if (mBaseZip) {
     nsRefPtr<nsZipHandle> handler = mBaseZip->GetFD();
     handler->mFile.GetURIString(result);
   }
   if (IsZip()) {
     result.Insert("jar:", 0);
     result += "!/";
     result += mPath;
   }
 }
 already_AddRefed<nsIFile>
 FileLocation::GetBaseFile()
 {
   if (IsZip() && mBaseZip) {
     nsRefPtr<nsZipHandle> handler = mBaseZip->GetFD();
     if (handler)
       return handler->mFile.GetBaseFile();
     return nullptr;
   }
   nsCOMPtr<nsIFile> file = mBaseFile;
   return file.forget();
 }
 bool
 FileLocation::Equals(const FileLocation &file) const
 {
   if (mPath != file.mPath)
     return false;
   if (mBaseFile && file.mBaseFile) {
     bool eq;
     return NS_SUCCEEDED(mBaseFile->Equals(file.mBaseFile, &eq)) && eq;
   }
   const FileLocation *a = this, *b = &file;
   if (a->mBaseZip) {
     nsRefPtr<nsZipHandle> handler = a->mBaseZip->GetFD();
     a = &handler->mFile;
   }
   if (b->mBaseZip) {
     nsRefPtr<nsZipHandle> handler = b->mBaseZip->GetFD();
     b = &handler->mFile;
   }
   return a->Equals(*b);
 }
 nsresult
 FileLocation::GetData(Data &data)
 {
   if (!IsZip()) {
     return mBaseFile->OpenNSPRFileDesc(PR_RDONLY, 0444, &data.mFd.rwget());
   }
   data.mZip = mBaseZip;
   if (!data.mZip) {
     data.mZip = new nsZipArchive();
     data.mZip->OpenArchive(mBaseFile);
   }
   data.mItem = data.mZip->GetItem(mPath.get());
   if (data.mItem)
     return NS_OK;
   return NS_ERROR_FILE_UNRECOGNIZED_PATH;
 }
 nsresult
 FileLocation::Data::GetSize(uint32_t *result)
 {
   if (mFd) {
     PRFileInfo64 fileInfo;
     if (PR_SUCCESS != PR_GetOpenFileInfo64(mFd, &fileInfo))
       return NS_ErrorAccordingToNSPR();
     if (fileInfo.size > int64_t(UINT32_MAX))
       return NS_ERROR_FILE_TOO_BIG;
     *result = fileInfo.size;
     return NS_OK;
   } else if (mItem) {
     *result = mItem->RealSize();
     return NS_OK;
   }
   return NS_ERROR_NOT_INITIALIZED;
 }
 nsresult
 FileLocation::Data::Copy(char *buf, uint32_t len)
 {
   if (mFd) {
     for (uint32_t totalRead = 0; totalRead < len; ) {
       int32_t read = PR_Read(mFd, buf + totalRead, XPCOM_MIN(len - totalRead, uint32_t(INT32_MAX)));
       if (read < 0)
         return NS_ErrorAccordingToNSPR();
       totalRead += read;
     }
     return NS_OK;
   } else if (mItem) {
     nsZipCursor cursor(mItem, mZip, reinterpret_cast<uint8_t *>(buf), len, true);
     uint32_t readLen;
     cursor.Copy(&readLen);
     return (readLen == len) ? NS_OK : NS_ERROR_FILE_CORRUPTED;
   }
   return NS_ERROR_NOT_INITIALIZED;
 }
 } /* namespace mozilla */

The Tor Browser / annotate

xpcom/build/FileLocation.cpp@6474c204b198 (annotated)

xpcom/build/FileLocation.cpp