cosmopolitan/libc/stdio/getdelim.c
Jōshin e16a7d8f3b
flip et / noet in modelines
`et` means `expandtab`.

```sh
rg 'vi: .* :vi' -l -0 | \
  xargs -0 sed -i '' 's/vi: \(.*\) et\(.*\)  :vi/vi: \1 xoet\2:vi/'
rg 'vi: .*  :vi' -l -0 | \
  xargs -0 sed -i '' 's/vi: \(.*\)noet\(.*\):vi/vi: \1et\2  :vi/'
rg 'vi: .*  :vi' -l -0 | \
  xargs -0 sed -i '' 's/vi: \(.*\)xoet\(.*\):vi/vi: \1noet\2:vi/'
```
2023-12-07 22:17:11 -05:00

48 lines
2.7 KiB
C

/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│ vi: set et ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi │
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2020 Justine Alexandra Roberts Tunney │
│ │
│ Permission to use, copy, modify, and/or distribute this software for │
│ any purpose with or without fee is hereby granted, provided that the │
│ above copyright notice and this permission notice appear in all copies. │
│ │
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/stdio/stdio.h"
/**
* Reads string from stream, e.g.
*
* char *line = NULL;
* size_t linesize = 0;
* while (getdelim(&line, &linesize, '\n', stdin) > 0) {
* chomp(line);
* printf("%s\n", line);
* }
* free(line);
*
* @param s is the caller's buffer (in/out) which is extended or
* allocated automatically, also NUL-terminated is guaranteed
* @param n is the capacity of s (in/out)
* @param delim is the stop char (and NUL is implicitly too)
* @return number of bytes read >0, including delim, excluding NUL,
* or -1 w/ errno on EOF or error; see ferror() and feof()
* @note this function will ignore EINTR if it occurs mid-line
* @raises EBADF if stream isn't open for reading
* @see fgetln(), getline(), chomp(), gettok_r()
*/
ssize_t getdelim(char **s, size_t *n, int delim, FILE *f) {
ssize_t rc;
flockfile(f);
rc = getdelim_unlocked(s, n, delim, f);
funlockfile(f);
return rc;
}