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// file : xsde/cxx/iso8859-1.cxx
// copyright : Copyright (c) 2005-2011 Code Synthesis Tools CC
// license : GNU GPL v2 + exceptions; see accompanying LICENSE file
#include <xsde/cxx/iso8859-1.hxx>
namespace xsde
{
namespace cxx
{
char iso8859_1::unrep_char_ = '\0';
bool iso8859_1::
to (const char* s, char* r)
{
for (; *s != 0; ++s)
{
unsigned char c = *s;
if (c < 0x80)
{
// Fast path.
//
*r++ = c;
continue;
}
else if ((c >> 5) == 0x06)
{
// UTF-8: 110yyyyy 10zzzzzz
// Unicode: 00000yyy yyzzzzzz
//
unsigned int u = (c & 0x1F) << 6;
c = *++s;
u |= c & 0x3F;
if (u < 0x100)
{
*r++ = static_cast<char> (u);
continue;
}
}
else if ((c >> 4) == 0x0E)
{
// UTF-8: 1110xxxx 10yyyyyy 10zzzzzz
// Unicode: xxxxyyyy yyzzzzzz
//
s += 2;
}
else if ((c >> 3) == 0x1E)
{
// UTF-8: 000wwwxx xxxxyyyy yyzzzzzz
// Unicode: 11110www 10xxxxxx 10yyyyyy 10zzzzzz
//
s += 3;
}
if (unrep_char_ != '\0')
*r++ = unrep_char_;
else
return false;
}
*r = '\0';
return true;
}
bool iso8859_1::
to (const char* s, size_t n, char* r)
{
const char* end = s + n;
for (; s != end; ++s)
{
unsigned char c = *s;
if (c < 0x80)
{
// Fast path.
//
*r++ = c;
continue;
}
else if ((c >> 5) == 0x06)
{
// UTF-8: 110yyyyy 10zzzzzz
// Unicode: 00000yyy yyzzzzzz
//
unsigned int u = (c & 0x1F) << 6;
c = *++s;
u |= c & 0x3F;
if (u < 0x100)
{
*r++ = static_cast<char> (u);
continue;
}
}
else if ((c >> 4) == 0x0E)
{
// UTF-8: 1110xxxx 10yyyyyy 10zzzzzz
// Unicode: xxxxyyyy yyzzzzzz
//
s += 2;
}
else if ((c >> 3) == 0x1E)
{
// UTF-8: 000wwwxx xxxxyyyy yyzzzzzz
// Unicode: 11110www 10xxxxxx 10yyyyyy 10zzzzzz
//
s += 3;
}
if (unrep_char_ != '\0')
*r++ = unrep_char_;
else
return false;
}
*r = '\0';
return true;
}
void iso8859_1::
from (const char* s, char* r)
{
for (; *s != 0; ++s)
{
unsigned char c = *s;
if (c < 0x80)
*r++ = c;
else
{
// 2-byte sequence.
//
*r++ = (c >> 6) | 0xC0;
*r++ = (c | 0x80) & 0xBF;
}
}
*r = '\0';
}
void iso8859_1::
from (const char* s, size_t n, char* r)
{
const char* end = s + n;
for (; s != end; ++s)
{
unsigned char c = *s;
if (c < 0x80)
*r++ = c;
else
{
// 2-byte sequence.
//
*r++ = (c >> 6) | 0xC0;
*r++ = (c | 0x80) & 0xBF;
}
}
*r = '\0';
}
}
}
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