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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* Fluent Bit
* ==========
* Copyright (C) 2015-2022 The Fluent Bit Authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* The following SDS interface is a clone/strip-down version of the original
* SDS library created by Antirez at https://github.com/antirez/sds.
*/
#ifndef FLB_SDS_H
#define FLB_SDS_H
#include <fluent-bit/flb_info.h>
#include <fluent-bit/flb_macros.h>
#include <stdlib.h>
#include <string.h>
#include <inttypes.h>
#define FLB_SDS_HEADER_SIZE (sizeof(uint64_t) + sizeof(uint64_t))
typedef char *flb_sds_t;
#pragma pack(push, 1)
struct flb_sds {
uint64_t len; /* used */
uint64_t alloc; /* excluding the header and null terminator */
char buf[];
};
#pragma pack(pop)
#define FLB_SDS_HEADER(s) ((struct flb_sds *) (s - FLB_SDS_HEADER_SIZE))
static inline size_t flb_sds_len(flb_sds_t s)
{
return (size_t) FLB_SDS_HEADER(s)->len;
}
static inline int flb_sds_is_empty(flb_sds_t s)
{
if (flb_sds_len(s) == 0) {
return FLB_TRUE;
}
return FLB_FALSE;
}
static inline void flb_sds_len_set(flb_sds_t s, size_t len)
{
FLB_SDS_HEADER(s)->len = len;
}
static inline size_t flb_sds_alloc(flb_sds_t s)
{
return (size_t) FLB_SDS_HEADER(s)->alloc;
}
static inline size_t flb_sds_avail(flb_sds_t s)
{
struct flb_sds *h;
h = FLB_SDS_HEADER(s);
return (size_t) (h->alloc - h->len);
}
static inline int flb_sds_cmp(flb_sds_t s, const char *str, int len)
{
if (flb_sds_len(s) != len) {
return -1;
}
return strncmp(s, str, len);
}
static inline int flb_sds_casecmp(flb_sds_t s, const char *str, int len)
{
if (flb_sds_len(s) != len) {
return -1;
}
return strncasecmp(s, str, len);
}
flb_sds_t flb_sds_create(const char *str);
flb_sds_t flb_sds_create_len(const char *str, int len);
flb_sds_t flb_sds_create_size(size_t size);
int flb_sds_trim(flb_sds_t s);
flb_sds_t flb_sds_cat(flb_sds_t s, const char *str, int len);
flb_sds_t flb_sds_cat_esc(flb_sds_t s, const char *str, int len,
char *esc, size_t esc_size);
flb_sds_t flb_sds_cat_utf8(flb_sds_t *sds, const char *str, int len);
int flb_sds_cat_safe(flb_sds_t *buf, const char *str, int len);
flb_sds_t flb_sds_increase(flb_sds_t s, size_t len);
flb_sds_t flb_sds_copy(flb_sds_t s, const char *str, int len);
void flb_sds_destroy(flb_sds_t s);
flb_sds_t flb_sds_printf(flb_sds_t *sds, const char *fmt, ...) FLB_FORMAT_PRINTF(2, 3);
int flb_sds_snprintf(flb_sds_t *str, size_t size, const char *fmt, ...) FLB_FORMAT_PRINTF(3, 4);
#endif
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