third_party/lzma_sdk/7zBuf.c

   1 /* 7zBuf.c -- Byte Buffer
   2 2008-03-28
   3 Igor Pavlov
   4 Public domain */
   5
   6 #include "7zBuf.h"
   7
   8 void Buf_Init(CBuf *p)
   9 {
  10   p->data = 0;
  11   p->size = 0;
  12 }
  13
  14 int Buf_Create(CBuf *p, size_t size, ISzAlloc *alloc)
  15 {
  16   p->size = 0;
  17   if (size == 0)
  18   {
  19     p->data = 0;
  20     return 1;
  21   }
  22   p->data = (Byte *)alloc->Alloc(alloc, size);
  23   if (p->data != 0)
  24   {
  25     p->size = size;
  26     return 1;
  27   }
  28   return 0;
  29 }
  30
  31 void Buf_Free(CBuf *p, ISzAlloc *alloc)
  32 {
  33   alloc->Free(alloc, p->data);
  34   p->data = 0;
  35   p->size = 0;
  36 }