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deployments/openvpn/third_party/microsocks/sblist.h

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+#ifndef SBLIST_H
+#define SBLIST_H
+
+/* this file is part of libulz, as of commit 8ab361a27743aaf025323ee43b8b8876dc054fdd
+   modified for direct inclusion in microsocks. */
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stddef.h>
+/*
+ * simple buffer list.
+ * 
+ * this thing here is basically a generic dynamic array
+ * will realloc after every blockitems inserts
+ * can store items of any size.
+ * 
+ * so think of it as a by-value list, as opposed to a typical by-ref list.
+ * you typically use it by having some struct on the stack, and pass a pointer
+ * to sblist_add, which will copy the contents into its internal memory.
+ * 
+ */
+
+typedef struct {
+	size_t itemsize;
+	size_t blockitems;
+	size_t count;
+	size_t capa;
+	char* items;
+} sblist;
+
+#define sblist_getsize(X) ((X)->count)
+#define sblist_get_count(X) ((X)->count)
+#define sblist_empty(X) ((X)->count == 0)
+
+// for dynamic style
+sblist* sblist_new(size_t itemsize, size_t blockitems);
+void sblist_free(sblist* l);
+
+//for static style
+void sblist_init(sblist* l, size_t itemsize, size_t blockitems);
+void sblist_free_items(sblist* l);
+
+// accessors
+void* sblist_get(sblist* l, size_t item);
+// returns 1 on success, 0 on OOM
+int sblist_add(sblist* l, void* item);
+int sblist_set(sblist* l, void* item, size_t pos);
+void sblist_delete(sblist* l, size_t item);
+char* sblist_item_from_index(sblist* l, size_t idx);
+int sblist_grow_if_needed(sblist* l);
+int sblist_insert(sblist* l, void* item, size_t pos);
+/* same as sblist_add, but returns list index of new item, or -1 */
+size_t sblist_addi(sblist* l, void* item);
+void sblist_sort(sblist *l, int (*compar)(const void *, const void *));
+/* insert element into presorted list, returns listindex of new entry or -1*/
+size_t sblist_insert_sorted(sblist* l, void* o, int (*compar)(const void *, const void *));
+
+#ifndef __COUNTER__
+#define __COUNTER__ __LINE__
+#endif
+
+#define __sblist_concat_impl( x, y ) x##y
+#define __sblist_macro_concat( x, y ) __sblist_concat_impl( x, y )
+#define __sblist_iterator_name __sblist_macro_concat(sblist_iterator, __COUNTER__)
+
+// use with custom iterator variable
+#define sblist_iter_counter(LIST, ITER, PTR) \
+	for(size_t ITER = 0; (PTR = sblist_get(LIST, ITER)), ITER < sblist_getsize(LIST); ITER++)
+
+// use with custom iterator variable, which is predeclared
+#define sblist_iter_counter2(LIST, ITER, PTR) \
+	for(ITER = 0; (PTR = sblist_get(LIST, ITER)), ITER < sblist_getsize(LIST); ITER++)
+
+// use with custom iterator variable, which is predeclared and signed
+// useful for a loop which can delete items from the list, and then decrease the iterator var.
+#define sblist_iter_counter2s(LIST, ITER, PTR) \
+	for(ITER = 0; (PTR = sblist_get(LIST, ITER)), ITER < (ssize_t) sblist_getsize(LIST); ITER++)
+
+
+// uses "magic" iterator variable
+#define sblist_iter(LIST, PTR) sblist_iter_counter(LIST, __sblist_iterator_name, PTR)
+
+#ifdef __cplusplus
+}
+#endif
+
+#pragma RcB2 DEP "sblist.c" "sblist_delete.c"
+
+#endif