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CMake/Source/cmSystemTools.h

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/*=========================================================================
Program: CMake - Cross-Platform Makefile Generator
Module: $RCSfile$
Language: C++
Date: $Date$
Version: $Revision$
Copyright (c) 2002 Kitware, Inc., Insight Consortium. All rights reserved.
See Copyright.txt or http://www.cmake.org/HTML/Copyright.html for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#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);
/**
* Get current time as a double. On certain platforms this will
* return higher resolution than seconds:
* (1) gettimeofday() -- resolution in microseconds
* (2) ftime() -- resolution in milliseconds
* (3) time() -- resolution in seconds
*/
static double GetTime();
/**
* Replace replace all occurances of the string in
* the source string.
*/
static void ReplaceString(std::string& source,
const char* replace,
const char* with);
/** Expand out any arguements in the vector that have ; separated
* strings into multiple arguements. A new vector is created
* containing the expanded versions of all arguments in argsIn.
*/
static void ExpandList(std::vector<std::string> const& argsIn,
std::vector<std::string>& argsOut);
static void ExpandListArgument(const std::string& arg,
std::vector<std::string>& argsOut);
/**
* Read a registry value
*/
static bool ReadRegistryValue(const char *key, std::string &value);
/**
* Write a registry value
*/
static bool WriteRegistryValue(const char *key, const char *value);
/**
* Delete a registry value
*/
static bool DeleteRegistryValue(const char *key);
/**
* Look for and replace registry values in a string
*/
static void ExpandRegistryValues(std::string& source);
/**
* Return a capitalized string (i.e the first letter is uppercased, all other
* are lowercased).
*/
static std::string Capitalized(const std::string&);
/**
* Return a lower case string
*/
static std::string LowerCase(const std::string&);
/**
* Return a lower case string
*/
static std::string UpperCase(const std::string&);
/**
* Replace Windows file system slashes with Unix-style slashes.
*/
static void ConvertToUnixSlashes(std::string& path);
/**
* Platform independent escape spaces, unix uses backslash,
* windows double quotes the string.
*/
static std::string EscapeSpaces(const char* str);
///! Escape quotes in a string.
static std::string EscapeQuotes(const char* str);
/**
* For windows this calles ConvertToWindowsOutputPath and for unix
* it calls ConvertToUnixOutputPath
*/
static std::string ConvertToOutputPath(const char*);
///! Return true if a file exists in the current directory.
static bool FileExists(const char* filename);
/**
* Given a string, replace any escape sequences with the corresponding
* characters.
*/
static std::string RemoveEscapes(const char*);
/**
* 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();
typedef void (*ErrorCallback)(const char*, const char*, bool&, void*);
/**
* Set the function used by GUI's to display error messages
* Function gets passed: message as a const char*,
* title as a const char*, and a reference to bool that when
* set to false, will disable furthur messages (cancel).
*/
static void SetErrorCallback(ErrorCallback f, void* clientData=0);
/**
* Display an error message.
*/
static void Error(const char* m, const char* m2=0,
const char* m3=0, const char* m4=0);
/**
* Display a message.
*/
static void Message(const char* m, const char* title=0);
///! Return true if there was an error at any point.
static bool GetErrorOccuredFlag()
{
return cmSystemTools::s_ErrorOccured || cmSystemTools::s_FatalErrorOccured;
}
///! If this is set to true, cmake stops processing commands.
static void SetFatalErrorOccured()
{
cmSystemTools::s_FatalErrorOccured = true;
}
///! Return true if there was an error at any point.
static bool GetFatalErrorOccured()
{
return cmSystemTools::s_FatalErrorOccured;
}
///! Set the error occured flag and fatal error back to false
static void ResetErrorOccuredFlag()
{
cmSystemTools::s_FatalErrorOccured = false;
cmSystemTools::s_ErrorOccured = false;
}
/**
* Copy the source file to the destination file only
* if the two files differ.
*/
static bool 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);
///! return true if the two files are the same file
static bool SameFile(const char* file1, const char* file2);
///! Copy a file.
static void cmCopyFile(const char* source,
const char* destination);
///! Remove a file.
static bool RemoveFile(const char* source);
/**
* does a string indicate a true or on value ? This is not the same
* as ifdef.
*/
static bool IsOn(const char* val);
/**
* does a string indicate a false or off value ? Note that this is
* not the same as !IsOn(...) because there are a number of
* ambiguous values such as "/usr/local/bin" a path will result in
* IsON and IsOff both returning false. Note that the special path
* NOTFOUND or IGNORE will cause IsOff to return true.
*/
static bool IsOff(const char* val);
///! Find a file in the system PATH, with optional extra paths.
static std::string FindFile(const char* name,
const std::vector<std::string>& path= std::vector<std::string>());
///! Find an executable in the system PATH, with optional extra paths.
static std::string FindProgram(const char* name,
const std::vector<std::string>& path = std::vector<std::string>(),
bool no_system_path = false);
///! Find a library in the system PATH, with optional extra paths.
static std::string FindLibrary(const char* name,
const std::vector<std::string>& path);
///! return true if the file is a directory.
static bool FileIsDirectory(const char* name);
static void Glob(const char *directory, const char *regexp,
std::vector<std::string>& files);
static void GlobDirs(const char *fullPath, std::vector<std::string>& files);
/**
* Try to find a list of files that match the "simple" globbing
* expression. At this point in time the globbing expressions have
* to be in form: /directory/partial_file_name*. The * character has
* to be at the end of the string and it does not support ?
* []... The optional argument type specifies what kind of files you
* want to find. 0 means all files, -1 means directories, 1 means
* files only. This method returns true if search was succesfull.
*/
static bool SimpleGlob(const std::string& glob, std::vector<std::string>& files,
int type = 0);
static std::string GetCurrentWorkingDirectory();
static std::string GetProgramPath(const char*);
static void SplitProgramPath(const char* in_name,
std::string& dir,
std::string& file);
static std::string CollapseFullPath(const char*);
///! return path of a full filename (no trailing slashes).
static std::string GetFilenamePath(const std::string&);
///! return file name of a full filename (i.e. file name without path).
static std::string GetFilenameName(const std::string&);
///! Split a program from its arguments and handle spaces in the paths.
static void SplitProgramFromArgs(const char* path,
std::string& program, std::string& args);
///! return file extension of a full filename (dot included).
static std::string GetFilenameExtension(const std::string&);
///! return file name without extension of a full filename.
static std::string GetFilenameWithoutExtension(const std::string&);
///! return file name without its last (shortest) extension.
static std::string GetFilenameWithoutLastExtension(const std::string&);
/** Return whether the path represents a full path (not relative). */
static bool FileIsFullPath(const char*);
static long int ModifiedTime(const char* filename);
/**
* Run an executable command and put the stdout in output.
* A temporary file is created in the binaryDir for storing the
* output because windows does not have popen.
*
* If verbose is false, no user-viewable output from the program
* being run will be generated.
*
* If timeout is specified, the command will be terminated after
* timeout expires.
*/
static bool RunCommand(const char* command, std::string& output,
const char* directory = 0,
bool verbose = true, int timeout = 0);
static bool RunCommand(const char* command, std::string& output,
int &retVal, const char* directory = 0,
bool verbose = true, int timeout = 0);
///! for windows return the short path for the given path, unix just a pass through
static bool GetShortPath(const char* path, std::string& result);
///! change directory the the directory specified
static int ChangeDirectory(const char* dir);
static void EnableMessages() { s_DisableMessages = false; }
static void DisableMessages() { s_DisableMessages = true; }
static void DisableRunCommandOutput() {s_DisableRunCommandOutput = true; }
static void EnableRunCommandOutput() {s_DisableRunCommandOutput = false; }
static bool GetRunCommandOutput() { return s_DisableRunCommandOutput; }
/** Split a string on its newlines into multiple lines. Returns
false only if the last line stored had no newline. */
static bool Split(const char* s, std::vector<cmStdString>& l);
/**
* Come constants for different file formats.
*/
enum FileFormat {
NO_FILE_FORMAT = 0,
C_FILE_FORMAT,
CXX_FILE_FORMAT,
JAVA_FILE_FORMAT,
HEADER_FILE_FORMAT,
RESOURCE_FILE_FORMAT,
DEFINITION_FILE_FORMAT,
STATIC_LIBRARY_FILE_FORMAT,
SHARED_LIBRARY_FILE_FORMAT,
MODULE_FILE_FORMAT,
OBJECT_FILE_FORMAT,
UNKNOWN_FILE_FORMAT
};
/**
* Determine the file type based on the extension
*/
static FileFormat GetFileFormat(const char* ext);
/**
* On Windows 9x we need a comspec (command.com) substitute to run
* programs correctly. This string has to be constant available
* through the running of program. This method does not create a copy.
*/
static void SetWindows9xComspecSubstitute(const char*);
static const char* GetWindows9xComspecSubstitute();
/** Windows if this is true, the CreateProcess in RunCommand will
* not show new consol windows when running programs.
*/
static void SetRunCommandHideConsole(bool v){s_RunCommandHideConsole = v;}
static bool GetRunCommandHideConsole(){ return s_RunCommandHideConsole;}
/** When building DEBUG with MSVC, this enables a hook that prevents
* error dialogs from popping up if the program is being run from
* DART.
*/
static void EnableMSVCDebugHook();
protected:
// these two functions can be called from ConvertToOutputPath
/**
* Convert the path to a string that can be used in a unix makefile.
* double slashes are removed, and spaces are escaped.
*/
static std::string ConvertToUnixOutputPath(const char*);
/**
* Convert the path to string that can be used in a windows project or
* makefile. Double slashes are removed if they are not at the start of
* the string, the slashes are converted to windows style backslashes, and
* if there are spaces in the string it is double quoted.
*/
static std::string ConvertToWindowsOutputPath(const char*);
private:
static bool s_RunCommandHideConsole;
static bool s_ErrorOccured;
static bool s_FatalErrorOccured;
static bool s_DisableMessages;
static bool s_DisableRunCommandOutput;
static ErrorCallback s_ErrorCallback;
static void* s_ErrorCallbackClientData;
static std::string s_Windows9xComspecSubstitute;
};
#endif
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