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dbuf.h
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/*
* dbuf.h
* Copyright (C) 2020 Adrian Perez de Castro <[email protected]>
*
* Distributed under terms of the MIT license.
*/
#ifndef DBUF_H
#define DBUF_H
#include <assert.h>
#include <stdarg.h>
#include <stdint.h>
#include <stdbool.h>
#include <stddef.h>
#if !(defined(__GNUC__) && __GNUC__ >= 3) && !defined(__attribute__)
# define __attribute__(dummy)
#endif
struct dbuf {
uint8_t *data;
size_t size;
size_t alloc;
};
#define DBUF_INIT ((struct dbuf) { .data = NULL, .size = 0, .alloc = 0 })
struct dbuf* dbuf_new(size_t prealloc)
__attribute__((warn_unused_result));
void dbuf_free(struct dbuf*)
__attribute__((nonnull(1)));
void dbuf_resize(struct dbuf*, size_t)
__attribute__((nonnull(1)));
void dbuf_clear(struct dbuf*)
__attribute__((nonnull(1)));
void dbuf_addmem(struct dbuf*, const void*, size_t)
__attribute__((nonnull(1, 2)));
void dbuf_addstr(struct dbuf*, const char*)
__attribute__((nonnull(1, 2)));
void dbuf_addfmtv(struct dbuf*, const char*, va_list)
__attribute__((nonnull(1, 2)));
char* dbuf_str(struct dbuf*)
__attribute__((warn_unused_result))
__attribute__((nonnull(1)));
static inline size_t dbuf_size(const struct dbuf*)
__attribute__((warn_unused_result))
__attribute__((nonnull(1)));
size_t
dbuf_size(const struct dbuf *b)
{
assert(b);
return b->size;
}
static inline uint8_t* dbuf_data(struct dbuf*)
__attribute__((warn_unused_result))
__attribute__((nonnull(1)));
uint8_t*
dbuf_data(struct dbuf *b)
{
assert(b);
return b->data;
}
static inline const uint8_t* dbuf_cdata(const struct dbuf*)
__attribute__((warn_unused_result))
__attribute__((nonnull(1)));
const uint8_t* dbuf_cdata(const struct dbuf *b)
{
assert(b);
return b->data;
}
static inline bool dbuf_empty(const struct dbuf*)
__attribute__((warn_unused_result))
__attribute__((nonnull(1)));
bool
dbuf_empty(const struct dbuf *b)
{
assert(b);
return b->size == 0;
}
static inline void dbuf_addch(struct dbuf*, char)
__attribute__((nonnull(1)));
void
dbuf_addch(struct dbuf *b, char c)
{
assert(b);
dbuf_addmem(b, &c, 1);
}
static inline void dbuf_addbuf(struct dbuf*, const struct dbuf*)
__attribute__((nonnull(1, 2)));
void
dbuf_addbuf(struct dbuf *b, const struct dbuf *o)
{
assert(b);
assert(o);
dbuf_addmem(b, dbuf_cdata(o), dbuf_size(o));
}
static inline void dbuf_addfmt(struct dbuf*, const char*, ...)
__attribute__((nonnull(1, 2)));
void
dbuf_addfmt(struct dbuf *b, const char *format, ...)
{
assert(b);
assert(format);
va_list args;
va_start(args, format);
dbuf_addfmtv(b, format, args);
va_end(args);
}
#endif /* !DBUF_H */