1 files changed, 166 insertions, 0 deletions
diff --git a/src/lib/array.c b/src/lib/array.c
new file mode 100644
index 0000000..44b91a5
--- /dev/null
+++ b/src/lib/array.c
@@ -0,0 +1,166 @@
+/* Copyright (c) 2003-2018 Dovecot authors, see the included COPYING file */
+
+#include "lib.h"
+#include "array.h"
+
+
+void *
+array_idx_modifiable_i(const struct array *array, unsigned int idx)
+{
+	i_assert(idx < array->buffer->used / array->element_size);
+	return PTR_OFFSET(array->buffer->data, idx * array->element_size);
+}
+
+void *array_idx_get_space_i(struct array *array, unsigned int idx)
+{
+	return buffer_get_space_unsafe(array->buffer, idx * array->element_size,
+				       array->element_size);
+}
+
+void array_idx_set_i(struct array *array, unsigned int idx, const void *data)
+{
+	buffer_write(array->buffer, idx * array->element_size,
+		     data, array->element_size);
+}
+
+void array_idx_clear_i(struct array *array, unsigned int idx)
+{
+	buffer_write_zero(array->buffer, idx * array->element_size,
+			  array->element_size);
+}
+
+void *array_insert_space_i(struct array *array, unsigned int idx)
+{
+	void *data;
+	size_t pos;
+
+	pos = idx * array->element_size;
+	buffer_copy(array->buffer, pos + array->element_size,
+		    array->buffer, pos, SIZE_MAX);
+
+	data = buffer_get_space_unsafe(array->buffer, pos, array->element_size);
+	memset(data, 0, array->element_size);
+	return data;
+}
+
+bool array_cmp_i(const struct array *array1, const struct array *array2)
+{
+	if (!array_is_created_i(array1) || array1->buffer->used == 0)
+		return !array_is_created_i(array2) || array2->buffer->used == 0;
+
+	if (!array_is_created_i(array2))
+		return FALSE;
+
+	return buffer_cmp(array1->buffer, array2->buffer);
+}
+
+bool array_equal_fn_i(const struct array *array1, const struct array *array2,
+		      int (*cmp)(const void *, const void*))
+{
+	unsigned int count1, count2, i;
+	size_t size;
+
+	if (!array_is_created_i(array1) || array1->buffer->used == 0)
+		return !array_is_created_i(array2) || array2->buffer->used == 0;
+
+	if (!array_is_created_i(array2))
+		return FALSE;
+
+	count1 = array_count_i(array1); count2 = array_count_i(array2);
+	if (count1 != count2)
+		return FALSE;
+
+	size = array1->element_size;
+	i_assert(size == array2->element_size);
+
+	for (i = 0; i < count1; i++) {
+		if (cmp(CONST_PTR_OFFSET(array1->buffer->data, i * size),
+			CONST_PTR_OFFSET(array2->buffer->data, i * size)) != 0)
+			return FALSE;
+	}
+	return TRUE;
+}
+
+bool array_equal_fn_ctx_i(const struct array *array1, const struct array *array2,
+			  int (*cmp)(const void *, const void *, const void *),
+			  const void *context)
+{
+	unsigned int count1, count2, i;
+	size_t size;
+
+	if (!array_is_created_i(array1) || array1->buffer->used == 0)
+		return !array_is_created_i(array2) || array2->buffer->used == 0;
+
+	if (!array_is_created_i(array2))
+		return FALSE;
+
+	count1 = array_count_i(array1); count2 = array_count_i(array2);
+	if (count1 != count2)
+		return FALSE;
+
+	size = array1->element_size;
+	i_assert(size == array2->element_size);
+
+	for (i = 0; i < count1; i++) {
+		if (cmp(CONST_PTR_OFFSET(array1->buffer->data, i * size),
+			CONST_PTR_OFFSET(array2->buffer->data, i * size), context) != 0)
+			return FALSE;
+	}
+	return TRUE;
+}
+
+void array_reverse_i(struct array *array)
+{
+	const size_t element_size = array->element_size;
+	unsigned int i, count = array_count_i(array);
+	size_t size;
+	void *data, *tmp;
+
+	data = buffer_get_modifiable_data(array->buffer, &size);
+	tmp = t_buffer_get(array->element_size);
+	for (i = 0; i+1 < count; i++, count--) {
+		memcpy(tmp, PTR_OFFSET(data, i * element_size), element_size);
+		memcpy(PTR_OFFSET(data, i * element_size),
+		       PTR_OFFSET(data, (count-1) * element_size),
+		       element_size);
+		memcpy(PTR_OFFSET(data, (count-1) * element_size), tmp,
+		       element_size);
+	}
+}
+
+void array_sort_i(struct array *array, int (*cmp)(const void *, const void *))
+{
+	unsigned int count;
+
+	count = array_count_i(array);
+	if (count == 0)
+		return;
+	qsort(buffer_get_modifiable_data(array->buffer, NULL),
+	      count, array->element_size, cmp);
+}
+
+void *array_bsearch_i(struct array *array, const void *key,
+		     int (*cmp)(const void *, const void *))
+{
+	unsigned int count;
+
+	count = array_count_i(array);
+	return bsearch(key, array->buffer->data,
+		       count, array->element_size, cmp);
+}
+
+const void *array_lsearch_i(const struct array *array, const void *key,
+			    int (*cmp)(const void *, const void *))
+{
+	const void * const data = array->buffer->data;
+	const size_t s = array->element_size;
+	unsigned int idx;
+
+	for (idx = 0; idx < array_count_i(array); idx++) {
+		if (cmp(key, CONST_PTR_OFFSET(data, idx * s)) == 0) {
+			return PTR_OFFSET(data, idx * s);
+		}
+	}
+
+	return NULL;
+}