| 1 | /* |
| 2 | * This file is part of DisOrder |
| 3 | * Copyright (C) 2008 Richard Kettlewell |
| 4 | * |
| 5 | * This program is free software: you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation, either version 3 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 17 | */ |
| 18 | /** @file lib/tracksort.c |
| 19 | * @brief Track ordering |
| 20 | */ |
| 21 | #include "common.h" |
| 22 | |
| 23 | #include "trackname.h" |
| 24 | #include "mem.h" |
| 25 | |
| 26 | /** @brief Compare two @ref entry objects */ |
| 27 | static int tracksort_compare(const void *a, const void *b) { |
| 28 | const struct tracksort_data *ea = a, *eb = b; |
| 29 | |
| 30 | return compare_tracks(ea->sort, eb->sort, |
| 31 | ea->display, eb->display, |
| 32 | ea->track, eb->track); |
| 33 | } |
| 34 | |
| 35 | /** @brief Sort tracks |
| 36 | * @param ntracks Number of tracks to sort |
| 37 | * @param tracks List of tracks |
| 38 | * @param type Comparison type |
| 39 | * @return Sorted track data |
| 40 | * |
| 41 | * Tracks are compared using compare_tracks(), with the sort key and display |
| 42 | * string set according to @p type, which should be "track" if the tracks are |
| 43 | * really tracks and "dir" if they are directories. |
| 44 | */ |
| 45 | struct tracksort_data *tracksort_init(int ntracks, |
| 46 | char **tracks, |
| 47 | const char *type) { |
| 48 | struct tracksort_data *td = xcalloc(ntracks, sizeof *td); |
| 49 | for(int n = 0; n < ntracks; ++n) { |
| 50 | td[n].track = tracks[n]; |
| 51 | td[n].sort = trackname_transform(type, tracks[n], "sort"); |
| 52 | td[n].display = trackname_transform(type, tracks[n], "display"); |
| 53 | } |
| 54 | qsort(td, ntracks, sizeof *td, tracksort_compare); |
| 55 | return td; |
| 56 | } |
| 57 | |
| 58 | /* |
| 59 | Local Variables: |
| 60 | c-basic-offset:2 |
| 61 | comment-column:40 |
| 62 | fill-column:79 |
| 63 | indent-tabs-mode:nil |
| 64 | End: |
| 65 | */ |