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utils.cpp

//FILE:         utils.cpp
//AUTHOR:       Nathan Cournia <nathan@cournia.com>

#include <algorithm>
#include <cctype>
#include <unistd.h>
#include <sys/stat.h>
#include "utils.h"

//some utils:: functions set this
namespace utils { std::string error; }

std::string
utils::add_slash( const std::string& filename )
{
        if( filename.length( ) > 0 ) {
                //is last char a slash
                if( filename[ filename.length( ) - 1 ] != '/' ) {
                        return filename + '/';
                }
                return filename;
        } else {
                //empty string
                return "/";
        }
}

void
utils::to_upper( std::string& str )
{
        std::transform( str.begin( ), str.end( ), str.begin( ),
                static_cast<int(*)(int)>(std::toupper) );
}

std::string
utils::to_upper( const std::string& in )
{
        std::string str = in;
        std::transform( str.begin( ), str.end( ), str.begin( ),
                static_cast<int(*)(int)>(std::toupper) );
        return str;
}

bool
utils::stricmp( const std::string& a, const std::string& b )
{
        return (utils::to_upper( a ) == utils::to_upper( b ));
}

//so slow . . .
bool
utils::check_extension( const std::string& file, const std::string& ext )
{
        //look for .
        std::string::size_type pos = file.find_last_of( "." );
        if( pos == std::string::npos ) {
                //file has no extension
                return false;
        }

        std::string s1 = file.substr( pos );
        std::string s2 = "." + ext;
        to_upper( s1 );
        to_upper( s2 );
        return (s1 == s2);
}

std::string
utils::trim( const std::string& str )
{
        std::string::size_type pos = str.find_first_not_of( " \r\t\n", 0 );
        if( pos != std::string::npos ) {
                return str.substr( pos );
        } else {
                return "";
        }
}

std::string
utils::rtrim( const std::string& str )
{
        std::string::size_type pos = str.find_last_not_of( " \r\t\n", 
                str.length( ) );
        if( pos != std::string::npos ) {
                return str.substr( 0, pos + 1 );
        } else {
                return "";
        }
}

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