String.cpp

/* ANTLR Translator Generator
 * Project led by Terence Parr at http://www.jGuru.com
 * Software rights: http://www.antlr.org/license.html
 *
 * $Id$
 */
 
#include "antlr/String.hpp"
 
#include <cctype>
 
#ifdef HAS_NOT_CSTDIO_H
#include <stdio.h>
#else
#include <cstdio>
#endif
 
#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
namespace antlr {
#endif
 
// wh: hack for Borland C++ 5.6
#if __BORLANDC__
  using std::snprintf;
#endif
 
 
// RK: should be using snprintf actually... (or stringstream)
ANTLR_C_USING(snprintf)
 
ANTLR_USE_NAMESPACE(std)string operator+( const ANTLR_USE_NAMESPACE(std)string& lhs, const int rhs )
{
        char tmp[100];
        snprintf(tmp,100,"%d",rhs);
        return lhs+tmp;
}
 
ANTLR_USE_NAMESPACE(std)string operator+( const ANTLR_USE_NAMESPACE(std)string& lhs, size_t rhs )
{
        char tmp[100];
        snprintf(tmp,100,"%lu",(unsigned long)rhs);
        return lhs+tmp;
}
 
/** Convert character to readable string
 */
ANTLR_USE_NAMESPACE(std)string charName(int ch)
{
        if (ch == EOF)
                return "EOF";
        else
        {
                ANTLR_USE_NAMESPACE(std)string s;
 
                // when you think you've seen it all.. an isprint that crashes...
                ch = ch & 0xFF;
#ifdef ANTLR_CCTYPE_NEEDS_STD
                if( ANTLR_USE_NAMESPACE(std)isprint( ch ) )
#else
                if( isprint( ch ) )
#endif
                {
                        s.append("'");
                        s += ch;
                        s.append("'");
//                      s += "'"+ch+"'";
                }
                else
                {
                        s += "0x";
 
                        unsigned int t = ch >> 4;
                        if( t < 10 )
                                s += t | 0x30;
                        else
                                s += t + 0x37;
                        t = ch & 0xF;
                        if( t < 10 )
                                s += t | 0x30;
                        else
                                s += t + 0x37;
                }
                return s;
        }
}
 
#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
}
#endif