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// file : xsde/cxx/iso8859-1.ixx
// author : Boris Kolpackov <boris@codesynthesis.com>
// copyright : Copyright (c) 2005-2011 Code Synthesis Tools CC
// license : GNU GPL v2 + exceptions; see accompanying LICENSE file
namespace xsde
{
namespace cxx
{
inline bool iso8859_1::
ascii_utf (const char* s, size_t& rn)
{
// NULL string is an ASCII string.
//
if (s == 0)
return true;
bool r = true;
size_t l = 0;
for (; *s != 0; ++s, ++l)
{
unsigned char c = *s;
if (c > 0x7F)
{
if ((c >> 5) == 0x06)
++s;
else if ((c >> 4) == 0x0E)
s += 2;
else if ((c >> 3) == 0x1E)
s += 3;
r = false;
}
}
rn = l + 1;
return r;
}
inline bool iso8859_1::
ascii_utf (const char* s, size_t n, size_t& rn)
{
// NULL string is an ASCII string.
//
if (s == 0)
return true;
bool r = true;
size_t l = 0;
const char* end = s + n;
for (; s != end; ++s, ++l)
{
unsigned char c = *s;
if (c > 0x7F)
{
if ((c >> 5) == 0x06)
++s;
else if ((c >> 4) == 0x0E)
s += 2;
else if ((c >> 3) == 0x1E)
s += 3;
r = false;
}
}
rn = l + 1;
return r;
}
inline bool iso8859_1::
ascii_iso (const char* s, size_t& rn)
{
// NULL string is an ASCII string.
//
if (s == 0)
return true;
bool r = true;
size_t l = 0;
for (; *s != 0; ++s, ++l)
{
unsigned char c = *s;
if (c > 0x7F)
{
++l; // 2-byte surrogate.
r = false;
}
}
rn = l + 1;
return r;
}
inline bool iso8859_1::
ascii_iso (const char* s, size_t n, size_t& rn)
{
// NULL string is an ASCII string.
//
if (s == 0)
return true;
bool r = true;
size_t l = 0;
const char* end = s + n;
for (; s != end; ++s, ++l)
{
unsigned char c = *s;
if (c > 0x7F)
{
++l; // 2-byte surrogate.
r = false;
}
}
rn = l + 1;
return r;
}
}
}
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