Mega Code Archive
Read all characters while compressing whitespaces
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/* The following code example is taken from the book
* "The C++ Standard Library - A Tutorial and Reference"
* by Nicolai M. Josuttis, Addison-Wesley, 1999
*
* (C) Copyright Nicolai M. Josuttis 1999.
* Permission to copy, use, modify, sell and distribute this software
* is granted provided this copyright notice appears in all copies.
* This software is provided "as is" without express or implied
* warranty, and with no claim as to its suitability for any purpose.
*/
#include <iostream>
#include <string>
#include <algorithm>
#include <iterator>
#include <locale>
using namespace std;
class bothWhiteSpaces {
private:
const locale& loc; // locale
public:
/* constructor
* - save the locale object
*/
bothWhiteSpaces (const locale& l) : loc(l) {
}
/* function call
* - returns whether both characters are whitespaces
*/
bool operator() (char elem1, char elem2) {
return isspace(elem1,loc) && isspace(elem2,loc);
}
};
int main()
{
string contents;
// don't skip leading whitespaces
cin.unsetf (ios::skipws);
//Read all characters while compressing whitespaces
unique_copy(istream_iterator<char>(cin), // beginning of source
istream_iterator<char>(), // end of source
back_inserter(contents), // destination
bothWhiteSpaces(cin.getloc())); // criterion for removing
// process contents
// - here: write it to the standard output
cout << contents;
}
string
string
asdf
string
asdf
Terminate batch job (Y/N)? n
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