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/* buffer.h - simple, fast buffers */
#ifndef HOEDOWN_BUFFER_H
#define HOEDOWN_BUFFER_H
#include <stdio.h>
#include <stddef.h>
#include <stdarg.h>
#include <stdint.h>
#include <stdlib.h>
#ifdef __cplusplus
extern "C" {
#endif
#if defined(_MSC_VER)
#define __attribute__(x)
#define inline __inline
#define __builtin_expect(x,n) x
#endif
/*********
* TYPES *
*********/
typedef void *(*hoedown_realloc_callback)(void *, size_t);
typedef void (*hoedown_free_callback)(void *);
struct hoedown_buffer {
uint8_t *data; /* actual character data */
size_t size; /* size of the string */
size_t asize; /* allocated size (0 = volatile buffer) */
size_t unit; /* reallocation unit size (0 = read-only buffer) */
hoedown_realloc_callback data_realloc;
hoedown_free_callback data_free;
hoedown_free_callback buffer_free;
};
typedef struct hoedown_buffer hoedown_buffer;
/* malloc / realloc / calloc wrappers */
#define HOEDOWN_ALLOC_WRAPPER(sig, call) \
static inline void *hoedown_##sig __attribute__ ((malloc)); \
static inline void *hoedown_##sig { \
void *ret = call; \
if (!ret) { \
fprintf(stderr, "Allocation failed.\n"); \
abort(); \
} \
return ret; \
}
/*************
* FUNCTIONS *
*************/
/* allocation wrappers */
HOEDOWN_ALLOC_WRAPPER(malloc(size_t size), malloc(size));
HOEDOWN_ALLOC_WRAPPER(calloc(size_t nmemb, size_t size), calloc(nmemb, size));
HOEDOWN_ALLOC_WRAPPER(realloc(void *ptr, size_t size), realloc(ptr, size));
/* hoedown_buffer_init: initialize a buffer with custom allocators */
void hoedown_buffer_init(
hoedown_buffer *buffer,
size_t unit,
hoedown_realloc_callback data_realloc,
hoedown_free_callback data_free,
hoedown_free_callback buffer_free
);
/* hoedown_buffer_new: allocate a new buffer */
hoedown_buffer *hoedown_buffer_new(size_t unit) __attribute__ ((malloc));
/* hoedown_buffer_reset: free internal data of the buffer */
void hoedown_buffer_reset(hoedown_buffer *buf);
/* hoedown_buffer_grow: increase the allocated size to the given value */
void hoedown_buffer_grow(hoedown_buffer *buf, size_t neosz);
/* hoedown_buffer_put: append raw data to a buffer */
void hoedown_buffer_put(hoedown_buffer *buf, const uint8_t *data, size_t size);
/* hoedown_buffer_puts: append a NUL-terminated string to a buffer */
void hoedown_buffer_puts(hoedown_buffer *buf, const char *str);
/* hoedown_buffer_putc: append a single char to a buffer */
void hoedown_buffer_putc(hoedown_buffer *buf, uint8_t c);
/* hoedown_buffer_set: replace the buffer's contents with raw data */
void hoedown_buffer_set(hoedown_buffer *buf, const uint8_t *data, size_t size);
/* hoedown_buffer_sets: replace the buffer's contents with a NUL-terminated string */
void hoedown_buffer_sets(hoedown_buffer *buf, const char *str);
/* hoedown_buffer_eq: compare a buffer's data with other data for equality */
int hoedown_buffer_eq(const hoedown_buffer *buf, const uint8_t *data, size_t size);
/* hoedown_buffer_eq: compare a buffer's data with NUL-terminated string for equality */
int hoedown_buffer_eqs(const hoedown_buffer *buf, const char *str);
/* hoedown_buffer_prefix: compare the beginning of a buffer with a string */
int hoedown_buffer_prefix(const hoedown_buffer *buf, const char *prefix);
/* hoedown_buffer_slurp: remove a given number of bytes from the head of the buffer */
void hoedown_buffer_slurp(hoedown_buffer *buf, size_t size);
/* hoedown_buffer_cstr: NUL-termination of the string array (making a C-string) */
const char *hoedown_buffer_cstr(hoedown_buffer *buf);
/* hoedown_buffer_printf: formatted printing to a buffer */
void hoedown_buffer_printf(hoedown_buffer *buf, const char *fmt, ...) __attribute__ ((format (printf, 2, 3)));
/* hoedown_buffer_free: free the buffer */
void hoedown_buffer_free(hoedown_buffer *buf);
/* HOEDOWN_BUFPUTSL: optimized hoedown_buffer_puts of a string literal */
#define HOEDOWN_BUFPUTSL(output, literal) \
hoedown_buffer_put(output, (const uint8_t *)literal, sizeof(literal) - 1)
/* HOEDOWN_BUFSETSL: optimized hoedown_buffer_sets of a string literal */
#define HOEDOWN_BUFSETSL(output, literal) \
hoedown_buffer_set(output, (const uint8_t *)literal, sizeof(literal) - 1)
/* HOEDOWN_BUFEQSL: optimized hoedown_buffer_eqs of a string literal */
#define HOEDOWN_BUFEQSL(output, literal) \
hoedown_buffer_eq(output, (const uint8_t *)literal, sizeof(literal) - 1)
#ifdef __cplusplus
}
#endif
#endif /** HOEDOWN_BUFFER_H **/
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