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// file : xsde/cxx/parser/non-validating/gyear.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 <stdlib.h> // strtoul
#include <xsde/cxx/config.hxx>
#include <xsde/cxx/parser/non-validating/gyear.hxx>
#include <xsde/cxx/parser/non-validating/time-zone.hxx>
namespace xsde
{
namespace cxx
{
namespace parser
{
namespace non_validating
{
void gyear_pimpl::
_pre ()
{
#ifdef XSDE_EXCEPTIONS
str_.assign ("", 0);
#else
if (str_.assign ("", 0))
_sys_error (sys_error::no_memory);
#endif
}
void gyear_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
}
}
gyear gyear_pimpl::
post_gyear ()
{
char* s = str_.data ();
ro_string tmp (s, str_.size ());
ro_string::size_type n = trim_right (tmp);
// gyear := [-]CCYY[N]*[Z|(+|-)HH:MM]
//
int year = 0;
bool zone = false;
short zh, zm;
if (n >= 4)
{
// Find the end of the year token.
//
ro_string::size_type pos = (s[0] == '-' ? 5 : 4);
for (; pos < n; ++pos)
{
char c = s[pos];
if (c == 'Z' || c == '+' || c == '-')
break;
}
// Parse the time zone first so that we can truncate and
// reuse the string.
//
if (pos < n)
{
bits::parse_time_zone (s + pos, n - pos, zh, zm);
zone = true;
}
// Parse the year value.
//
str_.truncate (pos);
bool neg = (s[0] == '-');
unsigned long ul = strtoul (neg ? s + 1 : s, 0, 10);
year = neg
? (ul == 2147483648UL
? (-2147483647 - 1)
: -static_cast<int> (ul))
: static_cast<int> (ul);
}
return zone ? gyear (year, zh, zm) : gyear (year);
}
}
}
}
}
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