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authorPhilip Sequeira <phsequei@gmail.com>2018-07-26 23:01:35 -0400
committeravih <avih@users.noreply.github.com>2019-09-29 01:13:00 +0300
commita7158ceec00f14e680a885722cfe23761b4662d3 (patch)
tree450530025fc1570d6577bddcb6ef9ce9283d7aae /misc
parentf726b368da87024a0cfe82627e0730ffe4578716 (diff)
downloadmpv-a7158ceec00f14e680a885722cfe23761b4662d3.tar.bz2
mpv-a7158ceec00f14e680a885722cfe23761b4662d3.tar.xz
demux: sort filenames naturally when playing a directory / archive
Diffstat (limited to 'misc')
-rw-r--r--misc/natural_sort.c67
-rw-r--r--misc/natural_sort.h23
2 files changed, 90 insertions, 0 deletions
diff --git a/misc/natural_sort.c b/misc/natural_sort.c
new file mode 100644
index 0000000000..3e0bab0e3c
--- /dev/null
+++ b/misc/natural_sort.c
@@ -0,0 +1,67 @@
+/*
+ * 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;
+}
diff --git a/misc/natural_sort.h b/misc/natural_sort.h
new file mode 100644
index 0000000000..47b9a7a132
--- /dev/null
+++ b/misc/natural_sort.h
@@ -0,0 +1,23 @@
+/*
+ * 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/>.
+ */
+
+#ifndef MP_NATURAL_SORT_H
+#define MP_NATURAL_SORT_H
+
+int mp_natural_sort_cmp(const char *name1, const char *name2);
+
+#endif