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/******************************************************************************
*
* file: StdOutput.h
*
* Copyright (c) 2004, Michael E. Smoot
* All rights reverved.
*
* See the file COPYING in the top directory of this distribution for
* more information.
*
* THE SOFTWARE IS PROVIDED _AS IS_, WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
*****************************************************************************/
#ifndef TCLAP_STDCMDLINEOUTPUT_H
#define TCLAP_STDCMDLINEOUTPUT_H
#include <string>
#include <vector>
#include <list>
#include <iostream>
#include <algorithm>
#include <tclap/CmdLineInterface.h>
#include <tclap/CmdLineOutput.h>
#include <tclap/XorHandler.h>
#include <tclap/Arg.h>
namespace TCLAP {
/**
* A class that isolates any output from the CmdLine object so that it
* may be easily modified.
*/
class StdOutput : public CmdLineOutput
{
public:
/**
* Prints the usage to stdout. Can be overridden to
* produce alternative behavior.
* \param c - The CmdLine object the output is generated for.
*/
virtual void usage(CmdLineInterface& c);
/**
* Prints the version to stdout. Can be overridden
* to produce alternative behavior.
* \param c - The CmdLine object the output is generated for.
*/
virtual void version(CmdLineInterface& c);
/**
* Prints (to stderr) an error message, short usage
* Can be overridden to produce alternative behavior.
* \param c - The CmdLine object the output is generated for.
* \param e - The ArgException that caused the failure.
*/
virtual void failure(CmdLineInterface& c,
ArgException& e );
protected:
/**
* Writes a brief usage message with short args.
* \param c - The CmdLine object the output is generated for.
* \param os - The stream to write the message to.
*/
void _shortUsage( CmdLineInterface& c, std::ostream& os ) const;
/**
* Writes a longer usage message with long and short args,
* provides descriptions and prints message.
* \param c - The CmdLine object the output is generated for.
* \param os - The stream to write the message to.
*/
void _longUsage( CmdLineInterface& c, std::ostream& os ) const;
/**
* This function inserts line breaks and indents long strings
* according the params input. It will only break lines at spaces,
* commas and pipes.
* \param os - The stream to be printed to.
* \param s - The string to be printed.
* \param maxWidth - The maxWidth allowed for the output line.
* \param indentSpaces - The number of spaces to indent the first line.
* \param secondLineOffset - The number of spaces to indent the second
* and all subsequent lines in addition to indentSpaces.
*/
void spacePrint( std::ostream& os,
const std::string& s,
int maxWidth,
int indentSpaces,
int secondLineOffset ) const;
};
inline void StdOutput::version(CmdLineInterface& _cmd)
{
std::string progName = _cmd.getProgramName();
std::string version = _cmd.getVersion();
std::cout << std::endl << progName << " version: "
<< version << std::endl << std::endl;
}
inline void StdOutput::usage(CmdLineInterface& _cmd )
{
std::cout << std::endl << "USAGE: " << std::endl << std::endl;
_shortUsage( _cmd, std::cout );
std::cout << std::endl << std::endl << "Where: " << std::endl << std::endl;
_longUsage( _cmd, std::cout );
std::cout << std::endl;
}
inline void StdOutput::failure( CmdLineInterface& _cmd,
ArgException& e )
{
std::string progName = _cmd.getProgramName();
std::cerr << "PARSE ERROR: " << e.argId() << std::endl
<< " " << e.error() << std::endl << std::endl;
if ( _cmd.hasHelpAndVersion() )
{
std::cerr << "Brief USAGE: " << std::endl;
_shortUsage( _cmd, std::cerr );
std::cerr << std::endl << "For complete USAGE and HELP type: "
<< std::endl << " " << progName << " --help"
<< std::endl << std::endl;
}
else
usage(_cmd);
}
inline void StdOutput::_shortUsage( CmdLineInterface& _cmd,
std::ostream& os ) const
{
std::list<Arg*> argList = _cmd.getArgList();
std::string progName = _cmd.getProgramName();
XorHandler xorHandler = _cmd.getXorHandler();
std::vector< std::vector<Arg*> > xorList = xorHandler.getXorList();
std::string s = progName + " ";
// first the xor
for ( int i = 0; static_cast<unsigned int>(i) < xorList.size(); i++ )
{
s += " {";
for ( ArgVectorIterator it = xorList[i].begin();
it != xorList[i].end(); it++ )
s += (*it)->shortID() + "|";
s[s.length()-1] = '}';
}
// then the rest
for (ArgListIterator it = argList.begin(); it != argList.end(); it++)
if ( !xorHandler.contains( (*it) ) )
s += " " + (*it)->shortID();
// if the program name is too long, then adjust the second line offset
int secondLineOffset = static_cast<int>(progName.length()) + 2;
if ( secondLineOffset > 75/2 )
secondLineOffset = static_cast<int>(75/2);
spacePrint( std::cout, s, 75, 3, secondLineOffset );
}
inline void StdOutput::_longUsage( CmdLineInterface& _cmd,
std::ostream& os ) const
{
std::list<Arg*> argList = _cmd.getArgList();
std::string message = _cmd.getMessage();
XorHandler xorHandler = _cmd.getXorHandler();
std::vector< std::vector<Arg*> > xorList = xorHandler.getXorList();
// first the xor
for ( int i = 0; static_cast<unsigned int>(i) < xorList.size(); i++ )
{
for ( ArgVectorIterator it = xorList[i].begin();
it != xorList[i].end();
it++ )
{
spacePrint( os, (*it)->longID(), 75, 3, 3 );
spacePrint( os, (*it)->getDescription(), 75, 5, 0 );
if ( it+1 != xorList[i].end() )
spacePrint(os, "-- OR --", 75, 9, 0);
}
os << std::endl << std::endl;
}
// then the rest
for (ArgListIterator it = argList.begin(); it != argList.end(); it++)
if ( !xorHandler.contains( (*it) ) )
{
spacePrint( os, (*it)->longID(), 75, 3, 3 );
spacePrint( os, (*it)->getDescription(), 75, 5, 0 );
os << std::endl;
}
os << std::endl;
spacePrint( os, message, 75, 3, 0 );
}
inline void StdOutput::spacePrint( std::ostream& os,
const std::string& s,
int maxWidth,
int indentSpaces,
int secondLineOffset ) const
{
int len = static_cast<int>(s.length());
if ( (len + indentSpaces > maxWidth) && maxWidth > 0 )
{
int allowedLen = maxWidth - indentSpaces;
int start = 0;
while ( start < len )
{
// find the substring length
int stringLen = std::min( len - start, allowedLen );
// trim the length so it doesn't end in middle of a word
if ( stringLen == allowedLen )
while ( s[stringLen+start] != ' ' &&
s[stringLen+start] != ',' &&
s[stringLen+start] != '|' &&
stringLen >= 0 )
stringLen--;
// ok, the word is longer than the line, so just split
// wherever the line ends
if ( stringLen <= 0 )
stringLen = allowedLen;
// check for newlines
for ( int i = 0; i < stringLen; i++ )
if ( s[start+i] == '\n' )
stringLen = i+1;
// print the indent
for ( int i = 0; i < indentSpaces; i++ )
os << " ";
if ( start == 0 )
{
// handle second line offsets
indentSpaces += secondLineOffset;
// adjust allowed len
allowedLen -= secondLineOffset;
}
os << s.substr(start,stringLen) << std::endl;
// so we don't start a line with a space
while ( s[stringLen+start] == ' ' && start < len )
start++;
start += stringLen;
}
}
else
{
for ( int i = 0; i < indentSpaces; i++ )
os << " ";
os << s << std::endl;
}
}
} //namespace TCLAP
#endif