mirror of
https://git.code.sf.net/p/quake/newtree
synced 2024-11-14 16:40:47 +00:00
52 lines
1.1 KiB
C
52 lines
1.1 KiB
C
|
#ifdef HAVE_CONFIG_H
|
||
|
|
# include "config.h"
|
||
|
|
#endif
|
||
|
|
#include "sizebuf.h"
|
||
|
|
#include "sys.h"
|
||
|
|
|
||
|
|
void SZ_Clear (sizebuf_t *buf)
|
||
|
|
{
|
||
|
|
buf->cursize = 0;
|
||
|
|
buf->overflowed = false;
|
||
|
|
}
|
||
|
|
|
||
|
|
void *SZ_GetSpace (sizebuf_t *buf, int length)
|
||
|
|
{
|
||
|
|
void *data;
|
||
|
|
|
||
|
|
if (buf->cursize + length > buf->maxsize)
|
||
|
|
{
|
||
|
|
if (!buf->allowoverflow)
|
||
|
|
Sys_Error ("SZ_GetSpace: overflow without allowoverflow set (%d)", buf->maxsize);
|
||
|
|
|
||
|
|
if (length > buf->maxsize)
|
||
|
|
Sys_Error ("SZ_GetSpace: %i is > full buffer size", length);
|
||
|
|
|
||
|
|
Sys_Printf ("SZ_GetSpace: overflow\n"); // because Con_Printf may be redirected
|
||
|
|
SZ_Clear (buf);
|
||
|
|
buf->overflowed = true;
|
||
|
|
}
|
||
|
|
|
||
|
|
data = buf->data + buf->cursize;
|
||
|
|
buf->cursize += length;
|
||
|
|
|
||
|
|
return data;
|
||
|
|
}
|
||
|
|
|
||
|
|
void SZ_Write (sizebuf_t *buf, void *data, int length)
|
||
|
|
{
|
||
|
|
memcpy (SZ_GetSpace(buf,length),data,length);
|
||
|
|
}
|
||
|
|
|
||
|
|
void SZ_Print (sizebuf_t *buf, char *data)
|
||
|
|
{
|
||
|
|
int len;
|
||
|
|
|
||
|
|
len = strlen(data)+1;
|
||
|
|
|
||
|
|
if (!buf->cursize || buf->data[buf->cursize-1])
|
||
|
|
memcpy ((byte *)SZ_GetSpace(buf, len),data,len); // no trailing 0
|
||
|
|
else
|
||
|
|
memcpy ((byte *)SZ_GetSpace(buf, len-1)-1,data,len); // write over trailing 0
|
||
|
|
}
|