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Make minor improvements

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This commit is contained in:
Justine Tunney 2020-12-23 23:42:56 -08:00
parent 04caf6f9ad
commit 95b142e4e5
95 changed files with 3818 additions and 2760 deletions
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53
libc/stdio/fputcfb.c Normal file
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/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2020 Justine Alexandra Roberts Tunney │
│ │
│ This program is free software; you can redistribute it and/or modify │
│ it under the terms of the GNU General Public License as published by │
│ the Free Software Foundation; version 2 of the License. │
│ │
│ This program is distributed in the hope that it will be useful, but │
│ WITHOUT ANY WARRANTY; without even the implied warranty of │
│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
│ General Public License for more details. │
│ │
│ You should have received a copy of the GNU General Public License │
│ along with this program; if not, write to the Free Software │
│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
│ 02110-1301 USA │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/stdio/internal.h"
#include "libc/stdio/stdio.h"
static noinline int slowpath(int c, FILE *f) {
if (f->beg < f->size) {
c &= 0xff;
f->buf[f->beg++] = c;
if (f->beg == f->size) {
if (f->writer) {
if (f->writer(f) == -1) return -1;
} else if (f->beg == f->size) {
f->beg = 0;
}
}
return c;
} else {
return __fseteof(f);
}
}
/**
* Writes byte to stream.
*
* @return c (as unsigned char) if written or -1 w/ errno
*/
noinstrument int fputcfb(int c, FILE *f) {
if (f->beg + 1 < f->size) {
c &= 0xff;
f->buf[f->beg++] = c;
return c;
} else {
return slowpath(c, f);
}
}