commandline Class Reference

Process the command line arguments to assign values to variables. More...

#include <commandline.h>

Collaboration diagram for commandline:

List of all members.

Public Member Functions
	commandline (int argc, char **argv)
	Supply the command line arguments to the constructor.
	commandline (istream &is)
	Construct the command line from a input stream.
	commandline (stringc &arg)
	Read the stream for command line arguments.
void	read (stringc &arg)
	Read the string as a command line.
void	read (istream &is)
void	readfile (stringc var)
	var=filename , reading the file in.
template<typename T >
boolc	mapvar (T &var, stringc &key)
	Read a string into a variable.
template<typename T >
boolc	mapvar (T &var, stringc &key, T const &init)
	Read a variable, if it does not exist then write init to var.
template<typename T >
boolc	mapcallback (T &x, void(T::*p)(), stringc &token)
	If the token is present in the command line then the member function is called.
boolc	hastoken (stringc &token) const
	Has the input included the token?
ostream &	enablehelp (ostream &os=cout) const
	Place after mapvar calls.
Public Attributes
vector< string >	args
	Sequential list of arguments.
multiset< string >	tokens
	Input strings having no = sign are defined as tokens.
vector< string >	bindvar
	List of attempted binds.

---

Detailed Description

Process the command line arguments to assign values to variables.

Acknowledgement: Thanks to Nigel Stewart for ideas.

Example

int main(int argc, char** argv)
{
  commandline cmd(argc,argv);
  
  uint numPoints(10);
  cmd.mapvar(numPoints,"numPoints");
  ...

At the command line calling the program to pass the
  variable/s in.
$./main numPoints=50

Definition at line 38 of file commandline.h.

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Constructor & Destructor Documentation

commandline::commandline	(	int	argc,
		char **	argv
	)			[explicit]

Supply the command line arguments to the constructor.

Definition at line 63 of file commandline.cpp.

References args, splitstring(), and tokens.

{ 
  for (uint i=1; i<(uint)argc; ++i)
  {
    string s1, s2;
    if (splitstring(s1,s2,string(argv[i]),'='))
    {
      mp[s1] = s2;
//cout << "*** s2=*" << s2 << "*" << endl;
//cout << "*** mp[s1]=*" << mp[s1] << "*" << endl;
    }
    else
      tokens.insert(argv[i]);
    args.push_back(argv[i]);
  }
}

commandline::commandline

(

istream &

is

)

[explicit]

Construct the command line from a input stream.

Definition at line 199 of file commandline.cpp.

References read().

{
  read(is);
}

commandline::commandline

(

stringc &

arg

)

[explicit]

Read the stream for command line arguments.

Definition at line 194 of file commandline.cpp.

References read().

{
  read(arg);
}

---

Member Function Documentation

ostream & commandline::enablehelp

(

ostream &

os = cout

)

const

Place after mapvar calls.

-h prints the mapvar strings.

Definition at line 204 of file commandline.cpp.

References bindvar, and tokens.

Referenced by integration< D, F >::reset(), rsastate::rsastate(), histogramtest::test01(), commandlinetest::test02(), and commandlinetest::test05().

{
  stringc hlp("-h");

  boolc hflag = (tokens.find(hlp)!=tokens.end());
  if (hflag)
  {
    for (uint i=0; i<bindvar.size(); ++i)
      os << bindvar[i] << " ";
    os << endl;
  }

  return os;
}

boolc commandline::hastoken

(

stringc &

token

)

const [inline]

Has the input included the token?

Definition at line 95 of file commandline.h.

References tokens.

Referenced by mkerrorscompile::eval(), mkerrorscompile::eval2(), main(), mkerrorstest::test02(), commandlinetest::test03(), mkerrorstest::test03(), and quickhull2Dtest::test05().

    { return (tokens.find(token)!=tokens.end()); }

template<typename T >

boolc commandline::mapcallback	(	T &	x,
		void(T::*)()	p,
		stringc &	token
	)			[inline]

If the token is present in the command line then the member function is called.

Definition at line 239 of file commandline.h.

Referenced by commandlinetest::test03().

{
  bool found = (tokens.find(token)!=tokens.end());
  if (found)
    (x.*p)();

  return found;
}

template<typename T >

boolc commandline::mapvar	(	T &	var,
		stringc &	key,
		T const &	init
	)			[inline]

Read a variable, if it does not exist then write init to var.

Definition at line 222 of file commandline.h.

References map_var< T >::foundGet().

{
  bindvar.push_back(key);
  map_var<T&> t(var,mp,key); 
  boolc res = t.foundGet();
  if (res==false)
    var = init;

  return res;
}

template<typename T >

boolc commandline::mapvar	(	T &	var,
		stringc &	key
	)			[inline]

Read a string into a variable.

Definition at line 213 of file commandline.h.

References bindvar, and map_var< T >::foundGet().

Referenced by graphmisc::colornormalize(), createmakefile< CFC >::createmakefile(), explorelinetest01(), explorelinetest02(), explorelinetest03(), explorepdtest01(), explorepdtest02(), vispointxml::handlecommand(), visconvex::handlecommand(), html::insert(), camera::lookat(), main(), maze001::maze001(), maze003::maze003(), maze004::maze004(), maze005::maze005(), minimizecomparetest01(), minimizecomparetest02(), cubegui::prog01(), readfile(), integration< D, F >::reset(), rsastate::rsastate(), simplexD1tessapp01::simplexD1tessapp01(), systemcallseval::systemcallseval(), windowscaleD2test::test002(), spiralindextest::test01(), quickhull3Dtest::test01(), triangletest::test01(), tetrahedrontest::test01(), desystest::test01(), commandlinetest::test01(), planetest::test01(), mathlibtest::test01(), histogramtest::test01(), cireporttest::test01(), planeinttest::test01(), diskinttest::test01(), circleD2test::test01(), boxOBBhalfspaceD2test::test01(), triangles3Tdisplaytest::test01(), delaunaysimpleD2test::test01(), pathlinesegtest::test01(), test01(), vrmltest::test02(), helixtestscope::helixtest::test02(), spiralindextest::test02(), simplexD2tessapp01::test02(), rsatest::test02(), quickhull2Dtest::test02(), triangletest::test02(), tetrahedrontest::test02(), commandlinetest::test02(), mathlibtest::test02(), diskinttest::test02(), triangles3Tdisplaytest::test02(), delaunaysimpleD2test::test02(), test02(), helixtestscope::helixtest::test03(), spiralindextest::test03(), triangletest::test03(), minexpdimtest::test03(), desystest::test03(), planetest::test03(), halfspaceD3test::test03(), diskinttest::test03(), triangles3Tdisplaytest::test03(), pathlinesegtest::test03(), test03(), spiralindextest::test04(), quickhull2Dtest::test04(), minexpdimtest::test04(), desystest::test04(), commandlinetest::test04(), mathlibtest::test04(), makestatetest::test04(), triangles3Tdisplaytest::test04(), test04(), quickhull2Dtest::test05(), minexpdimtest::test05(), desystest::test05(), commandlinetest::test05(), makestatetest::test05(), triangles3Tdisplaytest::test05(), treeindexedD2test::test05(), partitionstest::test06(), quickhull2Dtest::test06(), mathlibtest::test06(), makestatetest::test06(), mathlibtest::test07(), test08(), test09(), test11(), treeindexedD2test::unittest01(), pathlinesegtest::unittest01(), boxOBBhalfspaceD2test::unittest02(), and writearcgeometry().

{
  bindvar.push_back(key);
  map_var<T&> t(var,mp,key); 
  return t.foundGet();
}

void commandline::read

(

istream &

is

)

Definition at line 109 of file commandline.cpp.

References args, splitstring(), and tokens.

{
  string s;
  args.clear();
  vector<string>& vi(args);

  if (is.eof()==false)
    is >> s;

  for (; is.eof()==false; )
  {
    vi.push_back(s);
    s.clear();
    is >> s;
  }
  if (s.size()!=0)
    vi.push_back(s);
  
//  for (uint i=0; i<vi.size(); ++i)
//  {
//cout << "*vi[" << i << "]=" <<  vi[i] << "*" << endl;
//  }

//Converting v to v2
//*vi[0]=s1=abc*
//*vi[1]=points="1*
//*vi[2]=19*
//*vi[3]=32*
//*vi[4]=4"*
//*vi[5]=N=350*
//*v2[0]=s1=abc*
//*v2[1]=points=1 19 32 4*
//*v2[2]=N=350*

  if (vi.size()==0)
    return;

  vector<string> v2;
  bool quote=false;
  
  string::size_type k;
  for (uint i=0; i<vi.size(); ++i)
  { 
    string current(vi[i]);
    k = current.find('"');
 
    // Looking for closing quote
    if (quote)
    {
      if(k!=string::npos)    
      {
        current.erase(k,1);
        quote=false;
      }      
      v2[v2.size()-1] += (string(" ")+current);
    }
    else
    {
      if (k!=string::npos)
      {
        current.erase(k,1);
        quote=true;
      } 
      v2.push_back(current);
    }  
  }

//  for (uint i=0; i<v2.size(); ++i)
//  {
//cout << "*v2[" << i << "]=" <<  v2[i] << "*" << endl;
//  }


  // Now do parsing
  for (uint i=0; i<v2.size(); ++i)
  {
    string s1, s2;
    if (splitstring(s1,s2,v2[i],'='))
      mp[s1] = s2;
    else
      tokens.insert(v2[i]);
  }
}

void commandline::read

(

stringc &

arg

)

Read the string as a command line.

Separate parsing rules to actual command line which pre-parses text.

Definition at line 80 of file commandline.cpp.

Referenced by commandline(), and readfile().

{
  stringstream ss(arg);
  read(ss);

//cout << SHOW(arg) << endl;
//  assert(false);
}

void commandline::readfile

(

stringc

var

)

var=filename , reading the file in.

Use: load command line arguments from an argument pointing to a file at the command line!

Definition at line 48 of file commandline.cpp.

References mapvar(), and read().

Referenced by rsastate::rsastate(), and commandlinetest::test02().

{
  if (var.empty())
    return;

  string file;
  mapvar(file,var.c_str());
  if (!file.empty())
  {
    ifstream f1(file.c_str());
    read(f1);
  }
}

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Member Data Documentation

vector<string> commandline::args

Sequential list of arguments.

Definition at line 48 of file commandline.h.

Referenced by commandline(), read(), and mkerrorstest::test02().

vector<string> commandline::bindvar

List of attempted binds.

Definition at line 99 of file commandline.h.

Referenced by enablehelp(), and mapvar().

multiset<string> commandline::tokens

Input strings having no = sign are defined as tokens.

Definition at line 93 of file commandline.h.

Referenced by commandline(), enablehelp(), hastoken(), and read().

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The documentation for this class was generated from the following files:

• misclib/commandline.h
• misclib/commandline.cpp