src/util.c


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
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47

#include <string.h>
#include <unistd.h>

#include "util.h"

char *basename(char *path) {
    char *p;

    if ((p = strrchr(path, '/')))
        return p+1;

    return path;
}

ssize_t loop_read(int FILEDES, void *BUFFER, size_t SIZE) {
    ssize_t c = 0;
    
    while (SIZE > 0) {
        ssize_t r = read(FILEDES, BUFFER, SIZE);

        if (r <= 0)
            break;

        SIZE -= r;
        c += r;
        BUFFER += r;
    }

    return c;
}

ssize_t loop_write(int FILEDES, const void *BUFFER, size_t SIZE) {
    ssize_t c = 0;
    
    while (SIZE > 0) {
        ssize_t r = write(FILEDES, BUFFER, SIZE);

        if (r <= 0)
            break;

        SIZE -= r;
        c += r;
        BUFFER += r;
    }

    return c;
}