mirror of
https://github.com/reactos/CMake.git
synced 2024-12-11 13:24:58 +00:00
96afb12087
This converts the CMake license to a pure 3-clause OSI-approved BSD License. We drop the previous license clause requiring modified versions to be plainly marked. We also update the CMake copyright to cover the full development time range.
261 lines
7.2 KiB
C++
261 lines
7.2 KiB
C++
/*============================================================================
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CMake - Cross Platform Makefile Generator
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Copyright 2000-2009 Kitware, Inc., Insight Software Consortium
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Distributed under the OSI-approved BSD License (the "License");
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see accompanying file Copyright.txt for details.
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This software is distributed WITHOUT ANY WARRANTY; without even the
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implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the License for more information.
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============================================================================*/
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#include "cmGeneratedFileStream.h"
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#include "cmSystemTools.h"
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#if defined(CMAKE_BUILD_WITH_CMAKE)
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# include <cm_zlib.h>
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#endif
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//----------------------------------------------------------------------------
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cmGeneratedFileStream::cmGeneratedFileStream():
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cmGeneratedFileStreamBase(), Stream()
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{
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}
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//----------------------------------------------------------------------------
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cmGeneratedFileStream::cmGeneratedFileStream(const char* name, bool quiet):
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cmGeneratedFileStreamBase(name),
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Stream(TempName.c_str())
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{
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// Check if the file opened.
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if(!*this && !quiet)
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{
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cmSystemTools::Error("Cannot open file for write: ",
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this->TempName.c_str());
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cmSystemTools::ReportLastSystemError("");
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}
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}
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//----------------------------------------------------------------------------
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cmGeneratedFileStream::~cmGeneratedFileStream()
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{
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// This is the first destructor called. Check the status of the
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// stream and give the information to the private base. Next the
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// stream will be destroyed which will close the temporary file.
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// Finally the base destructor will be called to replace the
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// destination file.
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this->Okay = (*this)?true:false;
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}
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//----------------------------------------------------------------------------
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cmGeneratedFileStream&
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cmGeneratedFileStream::Open(const char* name, bool quiet, bool binaryFlag)
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{
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// Store the file name and construct the temporary file name.
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this->cmGeneratedFileStreamBase::Open(name);
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// Open the temporary output file.
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if ( binaryFlag )
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{
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this->Stream::open(this->TempName.c_str(),
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std::ios::out | std::ios::binary);
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}
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else
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{
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this->Stream::open(this->TempName.c_str(), std::ios::out);
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}
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// Check if the file opened.
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if(!*this && !quiet)
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{
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cmSystemTools::Error("Cannot open file for write: ",
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this->TempName.c_str());
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cmSystemTools::ReportLastSystemError("");
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}
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return *this;
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}
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//----------------------------------------------------------------------------
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bool
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cmGeneratedFileStream::Close()
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{
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// Save whether the temporary output file is valid before closing.
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this->Okay = (*this)?true:false;
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// Close the temporary output file.
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this->Stream::close();
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// Remove the temporary file (possibly by renaming to the real file).
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return this->cmGeneratedFileStreamBase::Close();
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}
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//----------------------------------------------------------------------------
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void cmGeneratedFileStream::SetCopyIfDifferent(bool copy_if_different)
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{
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this->CopyIfDifferent = copy_if_different;
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}
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//----------------------------------------------------------------------------
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void cmGeneratedFileStream::SetCompression(bool compression)
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{
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this->Compress = compression;
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}
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//----------------------------------------------------------------------------
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void cmGeneratedFileStream::SetCompressionExtraExtension(bool ext)
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{
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this->CompressExtraExtension = ext;
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}
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//----------------------------------------------------------------------------
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cmGeneratedFileStreamBase::cmGeneratedFileStreamBase():
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Name(),
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TempName(),
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CopyIfDifferent(false),
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Okay(false),
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Compress(false),
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CompressExtraExtension(true)
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{
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}
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//----------------------------------------------------------------------------
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cmGeneratedFileStreamBase::cmGeneratedFileStreamBase(const char* name):
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Name(),
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TempName(),
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CopyIfDifferent(false),
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Okay(false),
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Compress(false),
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CompressExtraExtension(true)
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{
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this->Open(name);
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}
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//----------------------------------------------------------------------------
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cmGeneratedFileStreamBase::~cmGeneratedFileStreamBase()
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{
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this->Close();
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}
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//----------------------------------------------------------------------------
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void cmGeneratedFileStreamBase::Open(const char* name)
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{
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// Save the original name of the file.
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this->Name = name;
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// Create the name of the temporary file.
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this->TempName = name;
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#if defined(__VMS)
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this->TempName += "_tmp";
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#else
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this->TempName += ".tmp";
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#endif
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// Make sure the temporary file that will be used is not present.
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cmSystemTools::RemoveFile(this->TempName.c_str());
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std::string dir = cmSystemTools::GetFilenamePath(this->TempName);
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cmSystemTools::MakeDirectory(dir.c_str());
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}
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//----------------------------------------------------------------------------
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bool cmGeneratedFileStreamBase::Close()
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{
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bool replaced = false;
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std::string resname = this->Name;
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if ( this->Compress && this->CompressExtraExtension )
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{
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resname += ".gz";
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}
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// Only consider replacing the destination file if no error
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// occurred.
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if(!this->Name.empty() &&
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this->Okay &&
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(!this->CopyIfDifferent ||
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cmSystemTools::FilesDiffer(this->TempName.c_str(), resname.c_str())))
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{
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// The destination is to be replaced. Rename the temporary to the
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// destination atomically.
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if ( this->Compress )
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{
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std::string gzname = this->TempName + ".temp.gz";
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if ( this->CompressFile(this->TempName.c_str(), gzname.c_str()) )
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{
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this->RenameFile(gzname.c_str(), resname.c_str());
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}
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cmSystemTools::RemoveFile(gzname.c_str());
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}
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else
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{
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this->RenameFile(this->TempName.c_str(), resname.c_str());
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}
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replaced = true;
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}
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// Else, the destination was not replaced.
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//
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// Always delete the temporary file. We never want it to stay around.
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cmSystemTools::RemoveFile(this->TempName.c_str());
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return replaced;
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}
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//----------------------------------------------------------------------------
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#ifdef CMAKE_BUILD_WITH_CMAKE
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int cmGeneratedFileStreamBase::CompressFile(const char* oldname,
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const char* newname)
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{
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gzFile gf = gzopen(newname, "w");
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if ( !gf )
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{
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return 0;
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}
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FILE* ifs = fopen(oldname, "r");
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if ( !ifs )
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{
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return 0;
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}
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size_t res;
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const size_t BUFFER_SIZE = 1024;
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char buffer[BUFFER_SIZE];
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while ( (res = fread(buffer, 1, BUFFER_SIZE, ifs)) > 0 )
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{
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if ( !gzwrite(gf, buffer, static_cast<int>(res)) )
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{
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fclose(ifs);
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gzclose(gf);
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return 0;
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}
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}
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fclose(ifs);
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gzclose(gf);
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return 1;
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}
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#else
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int cmGeneratedFileStreamBase::CompressFile(const char*, const char*)
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{
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return 0;
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}
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#endif
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//----------------------------------------------------------------------------
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int cmGeneratedFileStreamBase::RenameFile(const char* oldname,
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const char* newname)
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{
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return cmSystemTools::RenameFile(oldname, newname);
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}
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//----------------------------------------------------------------------------
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void cmGeneratedFileStream::SetName(const char* fname)
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{
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if ( !fname )
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{
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this->Name = "";
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return;
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}
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this->Name = fname;
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}
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