From daa68c4b2de9814b8331e7b9079d5fc49bee35c1 Mon Sep 17 00:00:00 2001
From: Matthias Schiffer <mschiffer@universe-factory.net>
Date: Sat, 5 Jan 2019 22:06:45 +0100
Subject: Add first parts of interface config handling

---
 src/vector.h | 113 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 113 insertions(+)
 create mode 100644 src/vector.h

(limited to 'src/vector.h')

diff --git a/src/vector.h b/src/vector.h
new file mode 100644
index 0000000..02ea804
--- /dev/null
+++ b/src/vector.h
@@ -0,0 +1,113 @@
+/**
+   \file
+
+   Typesafe dynamically sized arrays
+*/
+
+
+#pragma once
+
+#include <stdbool.h>
+#include <stdlib.h>
+
+/** A vector descriptor */
+typedef struct _vector_desc {
+	size_t allocated;		/**< The number of elements currently allocated */
+	size_t length;			/**< The actual number of elements in the vector */
+} vector_desc_t;
+
+/**
+   A type for a vector of \e type elements
+
+   \hideinitializer
+*/
+#define VECTOR(type) struct {	\
+	vector_desc_t desc;	\
+	type *data;		\
+}
+
+bool _vector_resize(vector_desc_t *desc, void **data, size_t n, size_t elemsize);
+bool _vector_insert(vector_desc_t *desc, void **data, void *element, size_t pos, size_t elemsize);
+void _vector_delete(vector_desc_t *desc, void **data, size_t pos, size_t elemsize);
+
+/**
+   Resizes the vector \e a to \e n elements
+
+   \hideinitializer
+*/
+#define VECTOR_RESIZE(v, n)  ({				\
+	__typeof__(v) *_v = &(v);			\
+	_vector_resize(&_v->desc, (void **)&_v->data, (n), sizeof(*_v->data)); \
+})
+
+/**
+   Frees all resources used by the vector \e v
+
+   \hideinitializer
+*/
+#define VECTOR_FREE(v) free((v).data)
+
+/**
+   Returns the number of elements in the vector \e v
+
+   \hideinitializer
+*/
+#define VECTOR_LEN(v) ((v).desc.length)
+
+/**
+   Returns the element with index \e i in the vector \e v
+
+   \hideinitializer
+*/
+#define VECTOR_INDEX(v, i) ((v).data[i])
+
+/**
+   Returns a pointer to the vector elements of \e v
+
+   \hideinitializer
+*/
+#define VECTOR_DATA(v) ((v).data)
+
+/**
+   Inserts the element \e elem at index \e pos of vector \e v
+
+   \hideinitializer
+*/
+#define VECTOR_INSERT(v, elem, pos) ({			\
+	__typeof__(v) *_v = &(v);			\
+	__typeof__(*_v->data) _e = (elem);		\
+	_vector_insert(&_v->desc, (void **)&_v->data, &_e, (pos), sizeof(_e)); \
+})
+
+/**
+   Adds the element \e elem at the end of vector \e v
+
+   \hideinitializer
+*/
+#define VECTOR_ADD(v, elem) ({				\
+	__typeof__(v) *_v = &(v);			\
+	__typeof__(*_v->data) _e = (elem);		\
+	_vector_insert(&_v->desc, (void **)&_v->data, &_e, _v->desc.length, sizeof(_e)); \
+})
+
+/**
+   Deletes the element at index \e pos of vector \e v
+
+   \hideinitializer
+*/
+#define VECTOR_DELETE(v, pos) ({			\
+	__typeof__(v) *_v = &(v);			\
+	_vector_delete(&_v->desc, (void **)&_v->data, (pos), sizeof(*_v->data)); \
+})
+
+/**
+   Performs a binary search on the vector \e v, returning a pointer to a matching vector element
+
+   \hideinitializer
+*/
+#define VECTOR_BSEARCH(key, v, cmp) ({			\
+	__typeof__(v) *_v = &(v);			\
+	const __typeof__(*_v->data) *_key = (key);	\
+	int (*_cmp)(__typeof__(_key), __typeof__(_key)) = (cmp); \
+	(__typeof__(_v->data))bsearch(_key, _v->data, _v->desc.length, sizeof(*_v->data), (int (*)(const void *, const void *))_cmp); \
+})
-- 
cgit v1.2.3