tripwire-open-source/src/core/twlocale.cpp

332 lines
10 KiB
C++

//
// The developer of the original code and/or files is Tripwire, Inc.
// Portions created by Tripwire, Inc. are copyright (C) 2000 Tripwire,
// Inc. Tripwire is a registered trademark of Tripwire, Inc. All rights
// reserved.
//
// This program is free software. The contents of this file are subject
// to the terms of the GNU General Public License as published by the
// Free Software Foundation; either version 2 of the License, or (at your
// option) any later version. You may redistribute it and/or modify it
// only in compliance with the GNU General Public License.
//
// This program is distributed in the hope that it will be useful.
// However, this program is distributed AS-IS WITHOUT ANY
// WARRANTY; INCLUDING THE IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS
// FOR A PARTICULAR PURPOSE. Please see the GNU General Public License
// for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
// USA.
//
// Nothing in the GNU General Public License or any other license to use
// the code or files shall permit you to use Tripwire's trademarks,
// service marks, or other intellectual property without Tripwire's
// prior written consent.
//
// If you have any questions, please contact Tripwire, Inc. at either
// info@tripwire.org or www.tripwire.org.
//
///////////////////////////////////////////////////////////////////////////////
// twlocale.cpp
//
//=========================================================================
// INCLUDES
//=========================================================================
#include "stdcore.h"
#include "twlocale.h"
#include "corestrings.h"
//TODO:mdb -- for some reason, this isn't being included on gcc/stlport
// How is this being included for other platforms (I can't find
// references to locale.h anywhere in the code!)
//
#if HAVE_GCC
#include <locale.h>
#endif //HAVE_GCC
//=========================================================================
// STANDARD LIBRARY INCLUDES
//=========================================================================
//=========================================================================
// UTIL FUNCTION PROTOTYPES
//=========================================================================
static TSTRING& util_FormatTimeC( struct tm* ptm, TSTRING& strBuf );
static TSTRING& util_FormatTime( struct tm* ptm, TSTRING& strBuf );
#if !USES_CLIB_DATE_FUNCTION
static TSTRING& util_FormatTimeCPlusPlus( struct tm* ptm, TSTRING& strBuf );
#endif
//=========================================================================
// PUBLIC METHOD CODE
//=========================================================================
#if IS_AROS
#define tzset()
#endif
void cTWLocale::InitGlobalLocale()
{
cDebug d("cTWLocale::InitGlobalLocale");
d.TraceDetail( "Attempting to set the program locale from the"
"default \"C\" locale to the system-default locale." );
#if USE_CLIB_LOCALE
char* pchLocale = setlocale( LC_ALL, "" );
d.TraceDetail( "C++ locale is incomplete or unavailable with this compiler, so"
"only changing the C-language locale. Some C++ locale-specific functionality"
"may not function properly." );
if( pchLocale )
{
d.TraceDebug( "locale changed to the system-default locale (non-C++): <%s>\n", pchLocale );
}
else
{
d.TraceDebug( "Error: unable to change locale to the system-default.\n"
"It is possible that there is no other locale than\n"
"the \"C\" locale on this platform.\n" );
}
#else
std::locale l("");
std::locale::global( l );
d.TraceDebug( "locale changed to the system default std::locale (C++): <%s>\n", l.name().c_str() );
#endif
}
TSTRING cTWLocale::FormatNumberAsHex( int32 i )
{
//
// preconditions
//
ASSERT( sizeof( long ) >= sizeof( int32 ) ); // must be able to cast to 'long'
//
// convert long to a string
//
TOSTRINGSTREAM sstr;
sstr.imbue( std::locale::classic() );
sstr.setf( std::ios_base::hex, std::ios_base::basefield );
const std::num_put< TCHAR > *pnp = 0, &np = tss::GetFacet( sstr.getloc(), pnp );
np.put( sstr, sstr, sstr.fill(), (long)i );
//
// return it
//
return( sstr.str() );
}
template< class numT, class CharT >
class cFormatNumberUtil
{
public:
// TODO:BAM -- these functions should really maybe take a stringstream that has been
// already set up for formatting (basefield, locale, etc.) that way we can merge
//. the FormatNumberAsHex function as well
//
//=============================================================================
// template< class numT, class CharT >
// numT
// cFormatNumberUtil::FormatNumber( const std::basic_string< CharT >& s, bool fCStyleFormatting = false )
//-----------------------------------------------------------------------------
// EFFECTS: Does all actual formatting for FormatNumber methods
static
numT
Format( const std::basic_string< CharT >& s, bool fCStyleFormatting )
{
static const std::num_get< CharT >* png;
std::basic_istringstream< CharT > ss( s );
std::ios_base::iostate state;
numT n;
if( fCStyleFormatting )
ss.imbue( std::locale::classic() );
tss::GetFacet( ss.getloc(), png ).get(
ss,
std::istreambuf_iterator< CharT >(),
ss,
state,
n );
if( ( state & std::ios_base::failbit ) != 0 )
throw eTWLocaleBadNumFormat();
return( n );
}
//=============================================================================
// std::basic_string< CharT >&
// Format( numT n, std::basic_string< CharT >& sBuf )
//-----------------------------------------------------------------------------
// EFFECTS: Does all actual formatting for FormatNumber methods
//
static
std::basic_string< CharT >&
Format( numT n, std::basic_string< CharT >& sBuf, bool fCStyleFormatting = false )
{
static const std::num_put< CharT >* pnp;
std::basic_ostringstream< CharT > ss;
if( fCStyleFormatting )
ss.imbue( std::locale::classic() );
tss::GetFacet( ss.getloc(), pnp ).put( ss, ss, ss.fill(), n );
sBuf = ss.str();
return( sBuf );
}
};
TSTRING cTWLocale::FormatNumberClassic( int32 i )
{
TSTRING s;
return cFormatNumberUtil< long, TCHAR >::Format( i, s, true );
}
int32 cTWLocale::FormatNumberClassic( const TSTRING& s )
{
return cFormatNumberUtil< long, TCHAR >::Format( s, true );
}
TSTRING& cTWLocale::FormatNumber( uint64 ui, TSTRING& strBuf )
{
// try to use the int64 version
if( ui <= (uint64)TSS_INT64_MAX )
return( FormatNumber( (int64)ui, strBuf ) );
else
{
#if IS_MSVC
// MSVC can't convert from uint64 to a double for some reason
strBuf = TSS_GetString( cCore, core::STR_NUMBER_TOO_BIG );
return( strBuf );
#else
ASSERT( std::numeric_limits<double>::max() >= TSS_UINT64_MAX );
return( cFormatNumberUtil< double, TCHAR >::Format( (double)ui, strBuf ) );
#endif
}
}
TSTRING& cTWLocale::FormatNumber( int64 i, TSTRING& strBuf )
{
// try to use the int32 version
if( i <= (int64)TSS_INT32_MAX )
return( FormatNumber( (int32)i, strBuf ) );
else
{
ASSERT( std::numeric_limits<double>::max() >= TSS_INT64_MAX );
return( cFormatNumberUtil< double, TCHAR >::Format( (double)i, strBuf ) );
}
}
TSTRING& cTWLocale::FormatNumber( uint32 ui, TSTRING& strBuf )
{
ASSERT( sizeof(unsigned long) >= sizeof(uint32) ); // must be able to cast to 'ulong'
return( cFormatNumberUtil< unsigned long, TCHAR >::Format( (unsigned long)ui, strBuf ) );
}
TSTRING& cTWLocale::FormatNumber( int32 i, TSTRING& strBuf )
{
ASSERT( sizeof(long) >= sizeof(int32) ); // must be able to cast to 'long'
return( cFormatNumberUtil< long, TCHAR >::Format( (long)i, strBuf ) );
}
TSTRING& cTWLocale::FormatTime( int64 t, TSTRING& strBuf )
{
// clear return string
strBuf.erase();
tzset();
time_t tmpTime = t;
struct tm * ptm = localtime( &tmpTime );
if( ptm )
{
util_FormatTime( ptm, strBuf );
}
else
{
strBuf = TSS_GetString( cCore, core::STR_UNKNOWN_TIME );
}
return( strBuf );
}
//=========================================================================
// UTIL FUNCTION IMPLEMENTATION
//=========================================================================
TSTRING& util_FormatTime( struct tm* ptm, TSTRING& strBuf )
{
ASSERT( ptm );
#if USES_CLIB_DATE_FUNCTION
return util_FormatTimeC( ptm, strBuf );
#else
return util_FormatTimeCPlusPlus( ptm, strBuf );
#endif
}
#if !USES_CLIB_DATE_FUNCTION
TSTRING& util_FormatTimeCPlusPlus( struct tm* ptm, TSTRING& strBuf )
{
ASSERT( ptm );
TOSTRINGSTREAM sstr;
static const std::time_put<TCHAR>* ptp;
//
// format date
//
#if IS_MSVC // MSVC uses old put() signature which didn't have the fill character, (and uses proprietary '#')
tss::GetFacet( sstr.getloc(), ptp ).put( sstr, sstr, ptm, 'c', '#' );
#else
tss::GetFacet( sstr.getloc(), ptp ).put( sstr, sstr, sstr.fill(), ptm, 'c' );
#endif
strBuf = sstr.str();
return strBuf;
}
#endif
TSTRING& util_FormatTimeC( struct tm* ptm, TSTRING& strBuf )
{
ASSERT( ptm );
TCHAR achTimeBuf[256];
/* XXX: This should check (#ifdef) for strftime - PH */
size_t nbWritten = _tcsftime( achTimeBuf, countof( achTimeBuf ),
#if IS_MSVC // MSVC uses proprietary '#'
_T("%#c"),
#else
_T("%c"),
#endif
ptm );
if( nbWritten )
strBuf = achTimeBuf;
else
strBuf = TSS_GetString( cCore, core::STR_UNKNOWN_TIME );
return strBuf;
}