void HFBitmaps::note( char const name[] )
{
Image *current;
StrNode *curdir = _root;
uint_16 magic;
InFile *bmp = new InFile( name, 1 );
while( bmp->bad() && curdir != NULL ){
chdir( curdir->_name );
curdir = curdir->_next;
bmp->open( name );
chdir( _startDir );
}
if( bmp->bad() ){
HCWarning( FILE_ERR, name );
delete bmp;
return;
}
bmp->reset();
bmp->readbuf( &magic, 1, 2 );
switch( magic ){
case BITMAP_MAGIC:
case SHG1_MAGIC:
case SHG2_MAGIC:
break;
default:
throw ImageNotSupported(); // EXCEPTION
}
bmp->reset();
current = new Image;
current->_name = new char[strlen(name)+1];
strcpy( current->_name, name );
current->_next = _files;
_files = current;
if( magic == BITMAP_MAGIC ){
current->_image = new Bitmap(bmp);
} else {
current->_image = new SegGraph(bmp);
}
if( !current->_image->validImage() ){
// Keep the bad image in the list for reference,
// but warn the user.
HCWarning( HLP_BADIMAGE, current->_name );
}
return;
}
uint_16 HFBitmaps::use( char const name[] )
{
uint_16 result;
Image *current, *newimage, *temp;
StrNode *curdir;
InFile *bmp;
static char filename[9] = "|bm";
// Check to see if this bitmap has already been referenced.
current = _usedFiles;
result = (uint_16) 0;
while( current != NULL && stricmp( name, current->_name ) != 0 ) {
result ++;
current = current->_next;
}
if( current != NULL ) {
return result;
}
// Check to see if the bitmap was referenced by note().
result = (uint_16) _numImages;
current = _files;
temp = NULL;
while( current != NULL && stricmp( name, current->_name ) != 0 ) {
temp = current;
current = current->_next;
}
newimage = _usedFiles;
if( newimage != NULL ) {
while( newimage->_next != NULL ) {
newimage = newimage->_next;
}
}
if( current != NULL ) {
if( !current->_image->validImage() ) {
throw ImageNotValid(); // EXCEPTION
}
if( temp != NULL ){
temp->_next = current->_next;
} else {
_files = current->_next;
}
} else {
// Now we have to search for the file.
curdir = _root;
bmp = new InFile( name, 1 );
while( bmp->bad() && curdir != NULL ) {
chdir( curdir->_name );
bmp->open( name, 1 );
chdir( _startDir );
curdir = curdir->_next;
}
if( bmp->bad() ) {
delete bmp;
throw ImageNotFound(); // EXCEPTION
} else {
uint_16 magic;
bmp->reset();
bmp->readbuf( &magic, 1, sizeof( uint_16 ) );
switch( magic ) {
case BITMAP_MAGIC:
case SHG1_MAGIC:
case SHG2_MAGIC:
break;
default:
throw ImageNotSupported(); // EXCEPTION
}
bmp->reset();
current = new Image;
current->_name = new char[strlen(name)+1];
strcpy( current->_name, name );
if( magic == BITMAP_MAGIC ) {
current->_image = new Bitmap(bmp);
} else {
current->_image = new SegGraph(bmp);
}
}
}
current->_next = NULL;
if( newimage != NULL ){
newimage->_next = current;
} else {
_usedFiles = current;
}
sprintf( filename + 3, "%d", result );
_dfile->addFile( current->_image, filename );
_numImages += 1;
return result;
}
