File: fgets.c

package info (click to toggle)
syslinux 3%3A6.04~git20190206.bf6db5b4%2Bdfsg1-1
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 16,912 kB
  • sloc: ansic: 189,344; asm: 5,148; pascal: 4,825; perl: 1,980; makefile: 1,973; python: 266; sh: 176; xml: 39
file content (31 lines) | stat: -rw-r--r-- 449 bytes parent folder | download | duplicates (9) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
 
/*
 * fgets.c
 *
 * This will be very slow due to the implementation of getc(),
 * but we can't afford to drain characters we don't need from
 * the input.
 */

#include <stdio.h>

char *fgets(char *s, int n, FILE * f)
{
    int ch;
    char *p = s;

    while (n > 1) {
	ch = getc(f);
	if (ch == EOF) {
	    *p = '\0';
	    return (p == s) ? NULL : s;
	}
	*p++ = ch;
	if (ch == '\n')
	    break;
	n--;
    }
    if (n)
	*p = '\0';

    return s;
}