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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 cmProcessTools_h
#define cmProcessTools_h
#include "cmStandardIncludes.h"
/** \class cmProcessTools
* \brief Helper classes for process output parsing
*
*/
class cmProcessTools
{
public:
/** Abstract interface for process output parsers. */
class OutputParser
{
public:
/** Process the given output data from a tool. Processing may be
done incrementally. Returns true if the parser is interested
in any more data and false if it is done. */
bool Process(const char* data, int length)
{ return this->ProcessChunk(data, length); }
bool Process(const char* data)
{ return this->Process(data, static_cast<int>(strlen(data))); }
virtual ~OutputParser() {}
protected:
/** Implement in a subclass to process a chunk of data. It should
return true only if it is interested in more data. */
virtual bool ProcessChunk(const char* data, int length) = 0;
};
/** Process output parser that extracts one line at a time. */
class LineParser: public OutputParser
{
public:
/** Construct with line separation character and choose whether to
ignore carriage returns. */
LineParser(char sep = '\n', bool ignoreCR = true);
/** Configure logging of lines as they are extracted. */
void SetLog(std::ostream* log, const char* prefix);
protected:
char Separator;
bool IgnoreCR;
std::ostream* Log;
const char* Prefix;
char LineEnd;
std::string Line;
virtual bool ProcessChunk(const char* data, int length);
/** Implement in a subclass to process one line of input. It
should return true only if it is interested in more data. */
virtual bool ProcessLine() = 0;
};
/** Trivial line handler for simple logging. */
class OutputLogger: public LineParser
{
public:
OutputLogger(std::ostream& log, const char* prefix = 0)
{ this->SetLog(&log, prefix); }
private:
virtual bool ProcessLine() { return true; }
};
/** Run a process and send output to given parsers. */
static void RunProcess(struct cmsysProcess_s* cp,
OutputParser* out, OutputParser* err = 0);
};
#endif
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