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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile$
Language: C++
Date: $Date$
Version: $Revision$
Copyright (c) 2000 National Library of Medicine
All rights reserved.
See COPYRIGHT.txt for copyright details.
=========================================================================*/
#ifndef cmSystemTools_h
#define cmSystemTools_h
#include "cmStandardIncludes.h"
/** \class cmSystemTools
* \brief A collection of useful functions for CMake.
*
* cmSystemTools is a class that provides helper functions
* for the CMake build system.
*/
class cmSystemTools
{
public:
/**
* Make a new directory if it is not there. This function
* can make a full path even if none of the directories existed
* prior to calling this function.
*/
static bool MakeDirectory(const char* path);
/**
* Replace replace all occurances of the string in
* the source string.
*/
static void ReplaceString(std::string& source,
const char* replace,
const char* with);
/**
* Replace Windows file system slashes with Unix-style slashes.
*/
static void ConvertToUnixSlashes(std::string& path);
///! Return true if a file exists in the current directory.
static bool FileExists(const char* filename);
/**
* Return the number of times the given expression occurs in the file
* specified by the concatenation of dir/file.
*/
static int Grep(const char* dir, const char* file, const char* expression);
/**
* Convert a path containing a cygwin drive specifier to its natural
* equivalent.
*/
static void ConvertCygwinPath(std::string& pathname);
/**
* Read a CMake command (or function) from an input file. This
* returns the name of the function and a list of its
* arguments.
*/
static bool ParseFunction(std::ifstream&,
std::string& name,
std::vector<std::string>& arguments);
/**
* Extract white-space separated arguments from a string.
* Double quoted strings are accepted with spaces.
* This is called by ParseFunction.
*/
static void GetArguments(std::string& line,
std::vector<std::string>& arguments);
/**
* Add the paths from the environment variable PATH to the
* string vector passed in.
*/
static void GetPath(std::vector<std::string>& path);
/**
* Get the file extension (including ".") needed for an executable
* on the current platform ("" for unix, ".exe" for Windows).
*/
static const char* GetExecutableExtension();
/**
* Display an error message.
*/
static void Error(const char* m, const char* m2=0,
const char* m3=0, const char* m4=0);
///! Return true if there was an error at any point.
static bool GetErrorOccuredFlag()
{
return cmSystemTools::s_ErrorOccured;
}
/**
* Copy the source file to the destination file only
* if the two files differ.
*/
static void CopyFileIfDifferent(const char* source,
const char* destination);
///! Compare the contents of two files. Return true if different.
static bool FilesDiffer(const char* source,
const char* destination);
///! Copy a file.
static void cmCopyFile(const char* source,
const char* destination);
///! Remove a file.
static void RemoveFile(const char* source);
static long int ModifiedTime(const char* filename);
private:
static bool s_ErrorOccured;
};
#endif
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