Source/cmWriteFileCommand.cxx

   1 /*=========================================================================
   2
   3   Program:   CMake - Cross-Platform Makefile Generator
   4   Module:    $RCSfile: cmWriteFileCommand.cxx,v $
   5   Language:  C++
   6   Date:      $Date: 2008-04-30 17:42:39 $
   7   Version:   $Revision: 1.17 $
   8
   9   Copyright (c) 2002 Kitware, Inc., Insight Consortium.  All rights reserved.
  10   See Copyright.txt or http://www.cmake.org/HTML/Copyright.html for details.
  11
  12      This software is distributed WITHOUT ANY WARRANTY; without even
  13      the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
  14      PURPOSE.  See the above copyright notices for more information.
  15
  16 =========================================================================*/
  17 #include "cmWriteFileCommand.h"
  18
  19 #include <sys/types.h>
  20 #include <sys/stat.h>
  21
  22 // cmLibraryCommand
  23 bool cmWriteFileCommand
  24 ::InitialPass(std::vector<std::string> const& args, cmExecutionStatus &)
  25 {
  26   if(args.size() < 2 )
  27     {
  28     this->SetError("called with incorrect number of arguments");
  29     return false;
  30     }
  31   std::string message;
  32   std::vector<std::string>::const_iterator i = args.begin();
  33
  34   std::string fileName = *i;
  35   bool overwrite = true;
  36   i++;
  37
  38   for(;i != args.end(); ++i)
  39     {
  40     if ( *i == "APPEND" )
  41       {
  42       overwrite = false;
  43       }
  44     else
  45       {
  46       message += *i;
  47       }
  48     }
  49
  50   if ( !this->Makefile->CanIWriteThisFile(fileName.c_str()) )
  51     {
  52     std::string e = "attempted to write a file: " + fileName
  53       + " into a source directory.";
  54     this->SetError(e.c_str());
  55     cmSystemTools::SetFatalErrorOccured();
  56     return false;
  57     }
  58
  59   std::string dir = cmSystemTools::GetFilenamePath(fileName);
  60   cmSystemTools::MakeDirectory(dir.c_str());
  61
  62   mode_t mode =
  63 #if defined( _MSC_VER ) || defined( __MINGW32__ )
  64     S_IREAD | S_IWRITE
  65 #elif defined( __BORLANDC__ )
  66     S_IRUSR | S_IWUSR
  67 #else
  68     S_IRUSR | S_IWUSR |
  69     S_IRGRP |
  70     S_IROTH
  71 #endif
  72     ;
  73
  74   // Set permissions to writable
  75   if ( cmSystemTools::GetPermissions(fileName.c_str(), mode) )
  76     {
  77     cmSystemTools::SetPermissions(fileName.c_str(),
  78 #if defined( _MSC_VER ) || defined( __MINGW32__ )
  79       S_IREAD | S_IWRITE
  80 #else
  81       S_IRUSR | S_IWUSR
  82 #endif
  83     );
  84     }
  85   // If GetPermissions fails, pretend like it is ok. File open will fail if
  86   // the file is not writable
  87   std::ofstream file(fileName.c_str(),
  88                      overwrite?std::ios::out : std::ios::app);
  89   if ( !file )
  90     {
  91     std::string error = "Internal CMake error when trying to open file: ";
  92     error += fileName.c_str();
  93     error += " for writing.";
  94     this->SetError(error.c_str());
  95     return false;
  96     }
  97   file << message << std::endl;
  98   file.close();
  99   cmSystemTools::SetPermissions(fileName.c_str(), mode);
 100
 101   return true;
 102 }
 103