src/lib/home-expand.c

	home-expand.c revision cd7dbe48b6b685063f056db670980a57a66a2638
/* Copyright (C) 2003 Timo Sirainen */

#include "lib.h"
#include "home-expand.h"

#include <stdlib.h>
#include <pwd.h>

/* expand ~/ or ~user/ in beginning of path */
const char *home_expand(const char *path)
{
    const char *home, *p, *orig_path;
    struct passwd *pw;

    if (path == NULL || *path != '~')
        return path;

    orig_path = path++;
    if (*path == '/' || *path == '\0') {
        home = getenv("HOME");
        if (*path != '\0') path++;
    } else {
        p = strchr(path, '/');
        if (p == NULL) {
            pw = getpwnam(path);
            path = "";
        } else {
            pw = getpwnam(t_strdup_until(path, p));
            path = p+1;
        }

        home = pw == NULL ? NULL : pw->pw_dir;
    }

    if (home == NULL)
        return orig_path;
    else if (*path == '\0')
        return t_strdup(home);
    else
        return t_strconcat(home, "/", path, NULL);
}