utils.c

AutoCAD DWG-file viewer

/****************************************************************/
/*			COPYRIGHT NOTICE			*/
/*			----------------			*/
/*  All software in this listing remain the strict copyright	*/
/*  of Ilija Kovacevic and cannot be copied or used in any way	*/
/*  except by written permission of Ilija Kovacevic.		*/
/*								*/
/*	Copyright (c) 1992 Ilija Kovacevic			*/
/*	www.kov.com   email [e-mail]			*/
/****************************************************************/

#include <ctype.h>
#include <errno.h>
#include <dwgin.h>

PUBLIC void warn_perror( char *fmt,... )

{
va_list ap;
char error_message[ 256 ];

va_start( ap,fmt ); 
vsprintf( error_message, fmt, ap );   
va_end( ap );

warning( "%s",error_message ); 
}


PUBLIC void set_extension( char *name,char *extension )

{
for ( ; *name; ++name )
	{
	if ( *name EQ '.' ) break;
	}
*name++ = '.';
*name = NULL;
strcpy( name,extension );
}


#ifdef UNIX
PUBLIC long filelength( int file )

{
struct stat status;

fstat( file,&status );
return( status.st_size );
}


PUBLIC int strcmpi( char *string1,char *string2 )


{
return( strcmp( string1,string2 ) );
}


PUBLIC char *strupr( char *string )

{
char *p;

for ( p = string; *p; ++p ) *p = toupper( *p );
return( string );
}


PUBLIC char *strlwr( char *string )

{
char *p;

for ( p = string; *p; ++p ) *p = tolower( *p );
return( string );
}
#endif


PUBLIC void convert_string_to_lower_case( char *string )

{
char *p;

for ( p = string; *p; ++p ) *p = tolower( *p );
}


PUBLIC DOUBLE rad_to_degrees( DOUBLE angle )


{
return( angle * 180.0/PI );
}


void dprintf( char *fmt, ... )

{
static FILE *output;
static int first_time = true;
char status[ 256 ];
va_list ap;

va_start( ap,fmt );

vsprintf( status,fmt,ap );   
va_end( ap );
if ( first_time ) 
	{
	first_time = false;
	output = fopen( "debug","w" );
	}
else output = fopen( "debug","a" );
fprintf( output,status );
fclose( output );
}


PUBLIC void fatal_error( char *fmt,... )
               
{
va_list ap;
char message[ 256 ];
char buffer[ 80 ];

va_start( ap,fmt ); 
vsprintf( message, fmt, ap );   
va_end( ap );
sprintf( buffer,"Fatal error : %s",message );
warning( buffer );
terminate( 1 );
}


PUBLIC char *get_memory( int size )

{
char *memory;

memory = ( char * )calloc( size,1 );
if ( !memory ) read_error( "Out of memory" );
return( memory );
}