plan9port/src/libbio/bputc.c

30 lines
439 B
C
Raw Normal View History

2003-09-30 17:47:41 +00:00
#include "lib9.h"
#include <bio.h>
int
Bputc(Biobuf *bp, int c)
{
int i, j;
loop:
i = bp->ocount;
j = i+1;
if(i != 0) {
bp->ocount = j;
bp->ebuf[i] = c;
return 0;
}
if(bp->state != Bwactive)
return Beof;
j = write(bp->fid, bp->bbuf, bp->bsize);
if(j == bp->bsize) {
bp->ocount = -bp->bsize;
bp->offset += j;
goto loop;
}
fprint(2, "Bputc: write error\n");
bp->state = Binactive;
bp->ocount = 0;
return Beof;
}