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/*============================================================================
CMake - Cross Platform Makefile Generator
Copyright 2000-2009 Kitware, Inc., Insight Software Consortium
Distributed under the OSI-approved BSD License (the "License");
see accompanying file Copyright.txt for details.
This software is distributed WITHOUT ANY WARRANTY; without even the
implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the License for more information.
============================================================================*/
#ifndef cmExecuteProcessCommand_h
#define cmExecuteProcessCommand_h
#include "cmCommand.h"
/** \class cmExecuteProcessCommand
* \brief Command that adds a target to the build system.
*
* cmExecuteProcessCommand is a CMake language interface to the KWSys
* Process Execution implementation.
*/
class cmExecuteProcessCommand : public cmCommand
{
public:
/**
* This is a virtual constructor for the command.
*/
virtual cmCommand* Clone()
{
return new cmExecuteProcessCommand;
}
/**
* This is called when the command is first encountered in
* the CMakeLists.txt file.
*/
virtual bool InitialPass(std::vector<std::string> const& args,
cmExecutionStatus &status);
/**
* The name of the command as specified in CMakeList.txt.
*/
virtual const char* GetName() const
{return "execute_process";}
/**
* This determines if the command is invoked when in script mode.
*/
virtual bool IsScriptable() const { return true; }
/**
* Succinct documentation.
*/
virtual const char* GetTerseDocumentation() const
{
return "Execute one or more child processes.";
}
/**
* More documentation.
*/
virtual const char* GetFullDocumentation() const
{
return
" execute_process(COMMAND <cmd1> [args1...]]\n"
" [COMMAND <cmd2> [args2...] [...]]\n"
" [WORKING_DIRECTORY <directory>]\n"
" [TIMEOUT <seconds>]\n"
" [RESULT_VARIABLE <variable>]\n"
" [OUTPUT_VARIABLE <variable>]\n"
" [ERROR_VARIABLE <variable>]\n"
" [INPUT_FILE <file>]\n"
" [OUTPUT_FILE <file>]\n"
" [ERROR_FILE <file>]\n"
" [OUTPUT_QUIET]\n"
" [ERROR_QUIET]\n"
" [OUTPUT_STRIP_TRAILING_WHITESPACE]\n"
" [ERROR_STRIP_TRAILING_WHITESPACE])\n"
"Runs the given sequence of one or more commands with the standard "
"output of each process piped to the standard input of the next. "
"A single standard error pipe is used for all processes. "
"If WORKING_DIRECTORY is given the named directory will be set as "
"the current working directory of the child processes. "
"If TIMEOUT is given the child processes will be terminated if they "
"do not finish in the specified number of seconds "
"(fractions are allowed). "
"If RESULT_VARIABLE is given the variable will be set to contain "
"the result of running the processes. This will be an integer return "
"code from the last child or a string describing an error condition. "
"If OUTPUT_VARIABLE or ERROR_VARIABLE are given the variable named "
"will be set with the contents of the standard output and standard "
"error pipes respectively. If the same variable is named for both "
"pipes their output will be merged in the order produced. "
"If INPUT_FILE, OUTPUT_FILE, or ERROR_FILE is given the file named "
"will be attached to the standard input of the first process, "
"standard output of the last process, or standard error of all "
"processes respectively. "
"If OUTPUT_QUIET or ERROR_QUIET is given then the standard output "
"or standard error results will be quietly ignored. "
"If more than one OUTPUT_* or ERROR_* option is given for the same "
"pipe the precedence is not specified. "
"If no OUTPUT_* or ERROR_* options are given the output will be shared "
"with the corresponding pipes of the CMake process itself.\n"
"The execute_process command is a newer more powerful version of "
"exec_program, but the old command has been kept for compatibility."
;
}
cmTypeMacro(cmExecuteProcessCommand, cmCommand);
};
#endif
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