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// file : xsde/cxx/parser/non-validating/date.cxx
// 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/date.hxx>
#include <xsde/cxx/parser/non-validating/time-zone.hxx>
namespace xsde
{
namespace cxx
{
namespace parser
{
namespace non_validating
{
void date_pimpl::
_pre ()
{
#ifdef XSDE_EXCEPTIONS
str_.assign ("", 0);
#else
if (str_.assign ("", 0))
_sys_error (sys_error::no_memory);
#endif
}
void date_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
}
}
date date_pimpl::
post_date ()
{
char* s = str_.data ();
ro_string tmp (s, str_.size ());
ro_string::size_type n = trim_right (tmp);
// date := [-]CCYY[N]*-MM-DD[Z|(+|-)HH:MM]
//
int year = 0;
unsigned short month = 0;
unsigned short day = 0;
bool zone = false;
short zh, zm;
if (n >= 10)
{
// Find the end of the year token.
//
ro_string::size_type pos = tmp.find ('-', s[0] == '-' ? 5 : 4);
if (pos != ro_string::npos && (n - pos - 1) >= 5)
{
// Parse the month, day values and time zone first so that we
// can truncate and reuse the string.
//
// month
//
month = 10 * (s[pos + 1] - '0') + (s[pos + 2] - '0');
// day
//
day = 10 * (s[pos + 4] - '0') + (s[pos + 5] - '0');
// zone
//
if ((pos + 6) < n)
{
bits::parse_time_zone (s + pos + 6, n - pos - 6, zh, zm);
zone = true;
}
// year
//
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
? date (year, month, day, zh, zm)
: date (year, month, day);
}
}
}
}
}
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