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/*
Arbitrary Sorting Filter(s)
Copyright (C) 2004 Robert Lipe, robertlipe@usa.net
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., 59 Temple Place - Suite 330, Boston, MA 02111 USA
*/
#include "defs.h"
#include "filterdefs.h"
#if FILTERS_ENABLED
typedef enum {
sm_unknown = 0,
sm_gcid,
sm_shortname,
sm_description,
sm_time
} sort_mode_;
sort_mode_ sort_mode = sm_shortname; /* How are we sorting these? */
static char *opt_sm_gcid, *opt_sm_shortname, *opt_sm_description, *opt_sm_time;
static
arglist_t sort_args[] = {
{"gcid", &opt_sm_gcid, "Sort by numeric geocache ID",
NULL, ARGTYPE_BOOL, ARG_NOMINMAX },
{"shortname", &opt_sm_shortname, "Sort by waypoint short name",
NULL, ARGTYPE_BOOL, ARG_NOMINMAX },
{"description", &opt_sm_description, "Sort by waypoint description",
NULL, ARGTYPE_BOOL, ARG_NOMINMAX },
{"time", &opt_sm_time, "Sort by time",
NULL, ARGTYPE_BOOL, ARG_NOMINMAX },
ARG_TERMINATOR
};
static int
sort_comp(const queue * a, const queue * b)
{
const waypoint *x1 = (waypoint *)a;
const waypoint *x2 = (waypoint *)b;
switch (sort_mode) {
case sm_gcid: return x1->gc_data.id - x2->gc_data.id;
case sm_shortname: return strcmp (x1->shortname, x2->shortname);
case sm_description: return strcmp (x1->description, x2->description);
case sm_time: return x1->creation_time - x2->creation_time;
default: abort(); return 0; /* Internal caller error. */
}
}
void
sort_process(void)
{
sortqueue(&waypt_head, sort_comp);
}
void
sort_init(const char *args)
{
if (opt_sm_gcid)
sort_mode = sm_gcid;
if (opt_sm_shortname)
sort_mode = sm_shortname;
if (opt_sm_description)
sort_mode = sm_description;
if (opt_sm_time)
sort_mode = sm_time;
}
filter_vecs_t sort_vecs = {
sort_init,
sort_process,
NULL,
NULL,
sort_args
};
#endif // FILTERS_ENABLED
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