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/* externC.cc Functions that need to be declared extern "C".
Last modified 1999-10-24
Copyright (C) 1998 David Flater.
This program is free software; you can redistribute it and/or modify
it under 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.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "common.hh"
// The user_io_ptr feature of libpng doesn't seem to work.
FILE *png_file_ptr;
int png_socket;
void
file_write_data_fn (png_structp png_ptr, png_bytep b_ptr, png_size_t sz) {
fwrite (b_ptr, 1, sz, png_file_ptr);
}
void
socket_write_data_fn (png_structp png_ptr, png_bytep b_ptr, png_size_t sz) {
write (png_socket, b_ptr, sz);
}
int
compare_stationrefs_name (const void *a, const void *b) {
StationRef *left = *(StationRef **)(a);
StationRef *right = *(StationRef **)(b);
return dstrcasecmp (left->name, right->name);
}
int
compare_stationrefs_lat (const void *a, const void *b) {
StationRef *left = *(StationRef **)(a);
StationRef *right = *(StationRef **)(b);
if (left->coordinates.isNull() && right->coordinates.isNull())
return 0;
if (left->coordinates.isNull())
return 1;
if (right->coordinates.isNull())
return -1;
if (left->coordinates.lat() < right->coordinates.lat())
return 1;
if (left->coordinates.lat() > right->coordinates.lat())
return -1;
return 0;
}
int
compare_stationrefs_lng (const void *a, const void *b) {
StationRef *left = *(StationRef **)(a);
StationRef *right = *(StationRef **)(b);
if (left->coordinates.isNull() && right->coordinates.isNull())
return 0;
if (left->coordinates.isNull())
return -1;
if (right->coordinates.isNull())
return 1;
if (left->coordinates.lng() < right->coordinates.lng())
return -1;
if (left->coordinates.lng() > right->coordinates.lng())
return 1;
return 0;
}
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