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// file : xsde/cxx/parser/validating/date.cxx
// license : GNU GPL v2 + exceptions; see accompanying LICENSE file
#include <stdlib.h> // strtoul
#include <xsde/cxx/config.hxx>
#include <xsde/cxx/errno.hxx>
#include <xsde/cxx/parser/validating/date.hxx>
#include <xsde/cxx/parser/validating/time-zone.hxx>
namespace xsde
{
namespace cxx
{
namespace parser
{
namespace 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
}
}
void date_pimpl::
_post ()
{
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]
//
if (n < 10 || (s[0] == '-' && n < 11))
{
_schema_error (schema_error::invalid_date_value);
return;
}
// 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 ||
s[pos + 3] != '-')
{
_schema_error (schema_error::invalid_date_value);
return;
}
// Parse the month, day values and time zone first so that we
// can truncate and reuse the string.
//
// month
//
char d1 = s[pos + 1];
char d2 = s[pos + 2];
if (d1 < '0' || d1 > '9' || d2 < '0' || d2 > '9')
{
_schema_error (schema_error::invalid_date_value);
return;
}
month_ = 10 * (d1 - '0') + (d2 - '0');
if (month_ < 1 || month_ > 12)
{
_schema_error (schema_error::invalid_date_value);
return;
}
// day
//
d1 = s[pos + 4];
d2 = s[pos + 5];
if (d1 < '0' || d1 > '9' || d2 < '0' || d2 > '9')
{
_schema_error (schema_error::invalid_date_value);
return;
}
day_ = 10 * (d1 - '0') + (d2 - '0');
// Note: day validated below.
// zone
//
if ((pos + 6) < n)
{
if (!bits::parse_time_zone (s + pos + 6, n - pos - 6, zh_, zm_))
{
_schema_error (schema_error::invalid_date_value);
return;
}
z_ = true;
}
else
z_ = false;
// year
//
str_.truncate (pos);
char* p;
set_errno (0);
bool neg = (s[0] == '-');
unsigned long ul = strtoul (neg ? s + 1 : s, &p, 10);
if (*p != '\0' ||
get_errno () != 0 ||
(neg && ul > 2147483648UL) ||
(!neg && ul > 2147483647UL) ||
ul == 0)
{
_schema_error (schema_error::invalid_date_value);
return;
}
year_ = neg
? (ul == 2147483648UL
? (-2147483647 - 1)
: -static_cast<int> (ul))
: static_cast<int> (ul);
// Validate day according to the XML Schema 1.1 specification:
//
// The day value must be no more than 30 if month is one of 4, 6, 9,
// or 11, no more than 28 if month is 2 and year is not divisible by
// 4, or is divisible by 100 but not by 400, and no more than 29 if
// month is 2 and year is divisible by 400, or by 4 but not by 100.
//
unsigned short max_day = 31;
switch (month_)
{
case 4:
case 6:
case 9:
case 11:
max_day = 30;
break;
case 2:
max_day = ((year_ % 400 == 0) ||
(year_ % 4 == 0 && year_ % 100 != 0) ? 29 : 28);
break;
default:
break;
}
if (day_ < 1 || day_ > max_day)
{
_schema_error (schema_error::invalid_date_value);
return;
}
}
date date_pimpl::
post_date ()
{
return z_
? date (year_, month_, day_, zh_, zm_)
: date (year_, month_, day_);
}
}
}
}
}
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