gbuf.h

   1 #ifndef GBUF_H
   2 #define GBUF_H
   3
   4 #include "debug.h"
   5
   6 struct gbuf {
   7         char *buffer;
   8         size_t alloc;
   9         size_t len;
  10 };
  11
  12 extern char gbuf_empty_buffer[];
  13
  14 #define GBUF(name) struct gbuf name = { gbuf_empty_buffer, 0, 0 }
  15
  16 static inline void gbuf_clear(struct gbuf *buf)
  17 {
  18         buf->len = 0;
  19         buf->buffer[0] = 0;
  20 }
  21
  22 static inline size_t gbuf_avail(struct gbuf *buf)
  23 {
  24         if (buf->alloc)
  25                 return buf->alloc - buf->len - 1;
  26         return 0;
  27 }
  28
  29 void gbuf_grow(struct gbuf *buf, size_t more);
  30 void gbuf_free(struct gbuf *buf);
  31 void gbuf_add_ch(struct gbuf *buf, char ch);
  32 void gbuf_add_bytes(struct gbuf *buf, const void *data, size_t len);
  33 void gbuf_add_str(struct gbuf *buf, const char *str);
  34 void gbuf_addf(struct gbuf *buf, const char *fmt, ...) __FORMAT(2, 3);
  35 void gbuf_set(struct gbuf *buf, int c, size_t count);
  36 char *gbuf_steal(struct gbuf *buf);
  37
  38 #endif