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// file : xsde/cxx/ro-string.cxx
// author : Boris Kolpackov <boris@codesynthesis.com>
// copyright : Copyright (c) 2005-2011 Code Synthesis Tools CC
// license : GNU GPL v2 + exceptions; see accompanying LICENSE file
#include <xsde/cxx/ro-string.hxx>
#ifdef XSDE_IOSTREAM
# include <iostream>
#endif
namespace xsde
{
namespace cxx
{
// ro_string
const size_t ro_string::npos = ~(size_t (0));
// operator <<
//
#ifdef XSDE_IOSTREAM
std::ostream&
operator<< (std::ostream& os, const ro_string& str)
{
if (str.size () != 0)
os.write (str.data (), str.size ());
return os;
}
#endif
size_t
trim_left (ro_string& s)
{
size_t size = s.size ();
if (size != 0)
{
const char* f = s.data ();
const char* l = f + size;
const char* of = f;
while (f < l &&
(*f == 0x20 || *f == 0x0A || *f == 0x0D || *f == 0x09))
++f;
if (f != of)
{
size = f <= l ? l - f : 0;
s.assign ((f <= l ? f : 0), size);
}
}
return size;
}
size_t
trim_right (ro_string& s)
{
size_t size = s.size ();
if (size != 0)
{
const char* f = s.data ();
const char* l = f + size - 1;
const char* ol = l;
while (l > f &&
(*l == 0x20 || *l == 0x0A || *l == 0x0D || *l == 0x09))
--l;
if (l != ol)
{
size = f <= l ? l - f + 1 : 0;
s.assign ((f <= l ? f : 0), size);
}
}
return size;
}
size_t
trim (ro_string& s)
{
size_t size = s.size ();
if (size != 0)
{
const char* f = s.data ();
const char* l = f + size;
const char* of = f;
while (f < l &&
(*f == 0x20 || *f == 0x0A || *f == 0x0D || *f == 0x09))
++f;
--l;
const char* ol = l;
while (l > f &&
(*l == 0x20 || *l == 0x0A || *l == 0x0D || *l == 0x09))
--l;
if (f != of || l != ol)
{
size = f <= l ? l - f + 1 : 0;
s.assign ((f <= l ? f : 0), size);
}
}
return size;
}
}
}
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