shared/scratchbuf.h

   1 #pragma once
   2
   3 #include <stdbool.h>
   4 #include <stdlib.h>
   5
   6 #include <shared/macro.h>
   7
   8 /*
   9  * Buffer abstract data type
  10  */
  11 struct scratchbuf {
  12         char *bytes;
  13         size_t size;
  14         bool need_free;
  15 };
  16
  17 void scratchbuf_init(struct scratchbuf *buf, char *stackbuf, size_t size);
  18 int scratchbuf_alloc(struct scratchbuf *buf, size_t sz);
  19 void scratchbuf_release(struct scratchbuf *buf);
  20
  21 /* Return a C string */
  22 static inline char *scratchbuf_str(struct scratchbuf *buf)
  23 {
  24         return buf->bytes;
  25 }
  26
  27 #define SCRATCHBUF_INITIALIZER(buf_) {                  \
  28         .bytes = buf_,                                  \
  29         .size = sizeof(buf_) + _array_size_chk(buf_),   \
  30         .need_free = false,                             \
  31 }