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🎥 Command line media player
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C
1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768/* * This file is part of mpv. * * mpv is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * mpv 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 Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with mpv. If not, see <http://www.gnu.org/licenses/>. */
#include "misc/ctype.h"
#include "natural_sort.h"
// Comparison function for an ASCII-only "natural" sort. Case is ignored and// numbers are ordered by value regardless of padding. Two filenames that differ// only in the padding of numbers will be considered equal and end up in// arbitrary order. Bytes outside of A-Z/a-z/0-9 will by sorted by byte value.int mp_natural_sort_cmp(const char *name1, const char *name2){ while (name1[0] && name2[0]) { if (mp_isdigit(name1[0]) && mp_isdigit(name2[0])) { while (name1[0] == '0') name1++; while (name2[0] == '0') name2++; const char *end1 = name1, *end2 = name2; while (mp_isdigit(*end1)) end1++; while (mp_isdigit(*end2)) end2++; // With padding stripped, a number with more digits is bigger. if ((end1 - name1) < (end2 - name2)) return -1; if ((end1 - name1) > (end2 - name2)) return 1; // Same length, lexicographical works. while (name1 < end1) { if (name1[0] < name2[0]) return -1; if (name1[0] > name2[0]) return 1; name1++; name2++; } } else { if (mp_tolower(name1[0]) < mp_tolower(name2[0])) return -1; if (mp_tolower(name1[0]) > mp_tolower(name2[0])) return 1; name1++; name2++; } } if (name2[0]) return -1; if (name1[0]) return 1; return 0;}