/**
* Create a new path string by appending a 'leaf' to 'base'.
*
* On Unixes, we convert a tidle at the beginning of a basename to mean the
* directory, complicating things a little, but better now than later.
*
* Remember to free the return value.
*/
size_t path_build(char *buf, size_t len, const char *base, const char *leaf)
{
size_t cur_len = 0;
int starts_with_separator;
buf[0] = '\0';
if (!leaf || !leaf[0]) {
if (base && base[0])
path_process(buf, len, &cur_len, base);
return cur_len;
}
/*
* If the leafname starts with the seperator,
* or with the tilde (on Unix),
* or there's no base path,
* We use the leafname only.
*/
starts_with_separator = (!base || !base[0]) || prefix(leaf, PATH_SEP);
#if defined(UNIX)
starts_with_separator = starts_with_separator || leaf[0] == '~';
#endif
if (starts_with_separator) {
path_process(buf, len, &cur_len, leaf);
return cur_len;
}
/* There is both a relative leafname and a base path from which it is
* relative */
path_process(buf, len, &cur_len, base);
strnfcat(buf, len, &cur_len, "%s", PATH_SEP);
path_process(buf, len, &cur_len, leaf);
return cur_len;
}
/*
* Create a new path string by appending a 'leaf' to 'base'.
*
* On Unixes, we convert a tidle at the beginning of a basename to mean the
* directory, complicating things a little, but better now than later.
*
* Remember to free the return value.
*/
size_t path_build(char *buf, size_t len, const char *base, const char *leaf)
{
size_t cur_len = 0;
buf[0] = '\0';
if (!leaf || !leaf[0])
{
if (base && base[0])
path_process(buf, len, &cur_len, base);
return cur_len;
}
/*
* If the leafname starts with the seperator,
* or with the tilde (on Unix),
* or there's no base path,
* We use the leafname only.
*/
#if defined(SET_UID) || defined(USE_PRIVATE_PATHS)
if ((!base || !base[0]) || prefix(leaf, PATH_SEP) || leaf[0] == '~')
#else
if ((!base || !base[0]) || prefix(leaf, PATH_SEP))
#endif
{
path_process(buf, len, &cur_len, leaf);
return cur_len;
}
/* There is both a relative leafname and a base path from which it is relative */
path_process(buf, len, &cur_len, base);
strnfcat(buf, len, &cur_len, "%s", PATH_SEP);
path_process(buf, len, &cur_len, leaf);
return cur_len;
}
