asciitodig Class Reference

Convert a stream to a string of ASCII digits. More...

#include <streamconversion.h>

List of all members.

Static Public Member Functions
static void	forward (string &os, istream &is)
	Convert a stream to a string of ascii digits.
static void	reverse (ostream &os, string const &in)
	Convert a string of ascii digits to a stream.

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Detailed Description

Convert a stream to a string of ASCII digits.

Definition at line 14 of file streamconversion.h.

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Member Function Documentation

void asciitodig::forward	(	string &	os,
		istream &	is
	)			[static]

Convert a stream to a string of ascii digits.

Definition at line 13 of file streamconversion.cpp.

Referenced by rsatest::test01().

{
  char ch;
  uint w;
  is.unsetf(ios::skipws);
  while (is.eof()==false)
  {
    is >> ch;
    if (is.eof())
      break;
    w = (uint)ch;
  
    stringstream ss;
    if (w==0)
      ss << "000";
    else
    if (w<10)
      ss << "00" << w;
    else
    if (w<100)
      ss << "0" << w;
    else
      ss << w;

    os += ss.str();
  }
}

void asciitodig::reverse	(	ostream &	os,
		string const &	in
	)			[static]

Convert a string of ascii digits to a stream.

Definition at line 42 of file streamconversion.cpp.

Referenced by rsatest::test01().

{
  assert((in.size()%3)==0);
  uintc n = in.size()/3;

  string s;
  char c;
  uint x;
  for (uint k=0; k<n; ++k) 
  {
    s = in.substr(3*k,3);
    stringstream ss(s.c_str());
    ss >> x;
    c = (char)x;
    os << c;
  }
}

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

• rsa/streamconversion.h
• rsa/streamconversion.cpp