1#ifndef __PERF_STRBUF_H 2#define __PERF_STRBUF_H 3 4 5#include <assert.h> 6 7extern char strbuf_slopbuf[]; 8struct strbuf { 9 size_t alloc; 10 size_t len; 11 char *buf; 12}; 13 14#define STRBUF_INIT { 0, 0, strbuf_slopbuf } 15 16/*----- strbuf life cycle -----*/ 17extern void strbuf_init(struct strbuf *buf, ssize_t hint); 18extern void strbuf_release(struct strbuf *); 19extern char *strbuf_detach(struct strbuf *, size_t *); 20 21/*----- strbuf size related -----*/ 22static inline ssize_t strbuf_avail(const struct strbuf *sb) { 23 return sb->alloc ? sb->alloc - sb->len - 1 : 0; 24} 25 26extern void strbuf_grow(struct strbuf *, size_t); 27 28static inline void strbuf_setlen(struct strbuf *sb, size_t len) { 29 if (!sb->alloc) 30 strbuf_grow(sb, 0); 31 assert(len < sb->alloc); 32 sb->len = len; 33 sb->buf[len] = '\0'; 34} 35 36/*----- add data in your buffer -----*/ 37static inline void strbuf_addch(struct strbuf *sb, int c) { 38 strbuf_grow(sb, 1); 39 sb->buf[sb->len++] = c; 40 sb->buf[sb->len] = '\0'; 41} 42 43extern void strbuf_remove(struct strbuf *, size_t pos, size_t len); 44 45extern void strbuf_add(struct strbuf *, const void *, size_t); 46static inline void strbuf_addstr(struct strbuf *sb, const char *s) { 47 strbuf_add(sb, s, strlen(s)); 48} 49 50__attribute__((format(printf,2,3))) 51extern void strbuf_addf(struct strbuf *sb, const char *fmt, ...); 52 53extern ssize_t strbuf_read(struct strbuf *, int fd, ssize_t hint); 54 55#endif /* __PERF_STRBUF_H */ 56