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authorRafael G. Martins <rafael@rafaelmartins.eng.br>2019-04-26 19:18:11 +0200
committerRafael G. Martins <rafael@rafaelmartins.eng.br>2019-04-28 21:57:58 +0200
commitab4685070515230c9aa64f9e69eec7fc061ee8d7 (patch)
treea051dd2237119d9094dff919bff6548536e67db6 /src
parentf09e36acfe2db50e0452ba1e19b13f4395a8d704 (diff)
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common: added bc_slist_sort
Diffstat (limited to 'src')
-rw-r--r--src/common/sort.c44
-rw-r--r--src/common/sort.h18
2 files changed, 62 insertions, 0 deletions
diff --git a/src/common/sort.c b/src/common/sort.c
new file mode 100644
index 0000000..3e24706
--- /dev/null
+++ b/src/common/sort.c
@@ -0,0 +1,44 @@
+/*
+ * blogc: A blog compiler.
+ * Copyright (C) 2014-2019 Rafael G. Martins <rafael@rafaelmartins.eng.br>
+ *
+ * This program can be distributed under the terms of the BSD License.
+ * See the file LICENSE.
+ */
+
+#include <stdbool.h>
+#include "utils.h"
+#include "sort.h"
+
+
+bc_slist_t*
+bc_slist_sort(bc_slist_t *l, bc_sort_func_t cmp)
+{
+ if (l == NULL) {
+ return NULL;
+ }
+
+ bool swapped = false;
+ bc_slist_t *lptr = NULL;
+ bc_slist_t *rptr = NULL;
+
+ do {
+ swapped = false;
+ lptr = l;
+
+ while (lptr->next != rptr) {
+ if (0 < cmp(lptr->data, lptr->next->data)) {
+ void *tmp = lptr->data;
+ lptr->data = lptr->next->data;
+ lptr->next->data = tmp;
+ swapped = true;
+ }
+
+ lptr = lptr->next;
+ }
+
+ rptr = lptr;
+ } while(swapped);
+
+ return l;
+}
diff --git a/src/common/sort.h b/src/common/sort.h
new file mode 100644
index 0000000..9f4dda2
--- /dev/null
+++ b/src/common/sort.h
@@ -0,0 +1,18 @@
+/*
+ * blogc: A blog compiler.
+ * Copyright (C) 2014-2019 Rafael G. Martins <rafael@rafaelmartins.eng.br>
+ *
+ * This program can be distributed under the terms of the BSD License.
+ * See the file LICENSE.
+ */
+
+#ifndef _SORT_H
+#define _SORT_H
+
+#include "utils.h"
+
+typedef int (*bc_sort_func_t) (const void *a, const void *b);
+
+bc_slist_t* bc_slist_sort(bc_slist_t *l, bc_sort_func_t cmp);
+
+#endif /* _SORT_H */