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// file : xsde/cxx/parser/validating/hex-binary.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/config.hxx>
#ifdef XSDE_CUSTOM_ALLOCATOR
# include <xsde/cxx/allocator.hxx>
#endif
#include <xsde/cxx/parser/validating/hex-binary.hxx>
static unsigned char
hex_decode (char c)
{
unsigned char r = 0xFF;
if (c >= '0' && c <= '9')
r = static_cast<unsigned char> (c - '0');
else if (c >= 'A' && c <= 'F')
r = static_cast<unsigned char> (10 + (c - 'A'));
else if (c >= 'a' && c <= 'f')
r = static_cast<unsigned char> (10 + (c - 'a'));
return r;
}
namespace xsde
{
namespace cxx
{
namespace parser
{
namespace validating
{
hex_binary_pimpl::
~hex_binary_pimpl ()
{
if (!base_ && buf_)
{
#ifndef XSDE_CUSTOM_ALLOCATOR
delete buf_;
#else
buf_->~buffer ();
cxx::free (buf_);
#endif
}
}
void hex_binary_pimpl::
_reset ()
{
hex_binary_pskel::_reset ();
if (!base_ && buf_)
{
#ifndef XSDE_CUSTOM_ALLOCATOR
delete buf_;
#else
buf_->~buffer ();
cxx::free (buf_);
#endif
buf_ = 0;
}
}
hex_binary_pimpl::
hex_binary_pimpl (bool base)
: base_ (base), buf_ (0)
{
}
void hex_binary_pimpl::
pre_impl (buffer* b)
{
buf_ = b;
}
void hex_binary_pimpl::
_pre ()
{
if (buf_ == 0)
{
#ifndef XSDE_CUSTOM_ALLOCATOR
buf_ = new buffer ();
#else
buf_ = static_cast<buffer*> (alloc (sizeof (buffer)));
#ifdef XSDE_EXCEPTIONS
alloc_guard ag (buf_);
new (buf_) buffer ();
ag.release ();
#else
if (buf_)
new (buf_) buffer ();
#endif
#endif
#ifndef XSDE_EXCEPTIONS
if (buf_ == 0)
{
_sys_error (sys_error::no_memory);
return;
}
#endif
}
#ifdef XSDE_EXCEPTIONS
str_.assign ("", 0);
#else
if (str_.assign ("", 0))
_sys_error (sys_error::no_memory);
#endif
}
void hex_binary_pimpl::
_characters (const ro_string& s)
{
if (str_.size () == 0)
{
ro_string tmp (s.data (), s.size ());
if (trim_left (tmp) != 0)
{
#ifdef XSDE_EXCEPTIONS
str_.append (tmp.data (), tmp.size ());
#else
if (str_.append (tmp.data (), tmp.size ()))
_sys_error (sys_error::no_memory);
#endif
}
}
else
{
#ifdef XSDE_EXCEPTIONS
str_.append (s.data (), s.size ());
#else
if (str_.append (s.data (), s.size ()))
_sys_error (sys_error::no_memory);
#endif
}
}
void hex_binary_pimpl::
_post ()
{
ro_string tmp (str_);
ro_string::size_type size = trim_right (tmp);
if (size % 2 != 0)
{
_schema_error (schema_error::invalid_hex_binary_value);
return;
}
size_t n = size / 2;
#ifdef XSDE_EXCEPTIONS
buf_->size (n);
#else
if (buf_->size (n))
{
_sys_error (sys_error::no_memory);
return;
}
#endif
if (n != 0)
{
const char* src = tmp.data ();
char* dst = buf_->data ();
size_t i = 0;
for (; i < n; ++i)
{
unsigned char h = hex_decode (src[2 * i]);
unsigned char l = hex_decode (src[2 * i + 1]);
if (h == 0xFF || l == 0xFF)
break;
dst[i] = (h << 4) | l;
}
if (i != n)
_schema_error (schema_error::invalid_hex_binary_value);
}
}
buffer* hex_binary_pimpl::
post_hex_binary ()
{
buffer* r = buf_;
buf_ = 0;
return r;
}
}
}
}
}
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