#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;
}