ref: 96b1debbf869ac135f3a0f22e8fdc57caaa15129
dir: /sys/src/libbio/bputc.c/
#include <u.h> #include <libc.h> #include <bio.h> int Bputc(Biobufhdr *bp, int c) { int i; for(;;) { i = bp->ocount; if(i) { bp->ebuf[i++] = c; bp->ocount = i; return 0; } if(Bflush(bp) == Beof) break; } return Beof; }