35 lines
518 B
C
35 lines
518 B
C
#include <u.h>
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#include <libc.h>
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#include "fmtdef.h"
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/*
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* generic routine for flushing a formatting buffer
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* to a file descriptor
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*/
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int
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_fmtFdFlush(Fmt *f)
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{
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int n;
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n = (char*)f->to - (char*)f->start;
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if(n && write((int)f->farg, f->start, n) != n)
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return 0;
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f->to = f->start;
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return 1;
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}
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int
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vfprint(int fd, char *fmt, va_list args)
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{
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Fmt f;
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char buf[256];
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int n;
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fmtfdinit(&f, fd, buf, sizeof(buf));
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f.args = args;
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n = dofmt(&f, fmt);
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if(n > 0 && _fmtFdFlush(&f) == 0)
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return -1;
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return n;
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}
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