Function ResolvePath

util/folder/dirut.cpp:601–648

}

int ResolvePath(const char* rel, const char* abs, char res[/*MAXPATHLEN*/], bool isdir) {
    char t[MAXPATHLEN * 2 + 3];
    size_t len;

    *res = 0;
    if (!rel || !*rel) {
        return EINVAL;
    }
    if (!IsAbsolutePath(rel) && IsAbsolutePath(abs)) {
        len = strlcpy(t, abs, sizeof(t));
        if (len >= sizeof(t) - 3) {
            return EINVAL;
        }
        if (t[len - 1] != LOCSLASH_C) {
            t[len++] = LOCSLASH_C;
        }
        len += strlcpy(t + len, rel, sizeof(t) - len);
    } else {
        len = strlcpy(t, rel, sizeof(t));
    }
    if (len >= sizeof(t) - 3) {
        return EINVAL;
    }
    if (isdir && t[len - 1] != LOCSLASH_C) {
        t[len++] = LOCSLASH_C;
        t[len] = 0;
    }
    if (!realpath(t, res)) {
        if (!isdir && realpath(GetDirName(t).data(), res)) {
            len = strlen(res);
            if (res[len - 1] != LOCSLASH_C) {
                res[len++] = LOCSLASH_C;
                res[len] = 0;
            }
            strcpy(res + len, GetBaseName(t).data());
            return 0;
        }
        return errno ? errno : ENOENT;
    }
    if (isdir) {
        len = strlen(res);
        if (res[len - 1] != LOCSLASH_C) {
            res[len++] = LOCSLASH_C;
            res[len] = 0;
        }
    }
    return 0;
}

TString ResolvePath(const char* rel, const char* abs, bool isdir) {
    char buf[PATH_MAX];