path_p++;
unmatched_slash_count++;
}
+
+ /* Find out how many directory levels in cwd were *not* matched. */
while (*cwd_p)
if (*cwd_p++ == '/')
- unmatched_slash_count++;
+ unmatched_slash_count++;
+
+ /* Now we know how long the "short name" will be.
+ Reject it if longer than the input. */
+ if (unmatched_slash_count * 3 + strlen (path_p) >= filename_len)
+ return filename;
+
+ /* For each of them, put a `../' at the beginning of the short name. */
while (unmatched_slash_count--)
{
+ /* Give up if the result gets to be longer
+ than the absolute path name. */
if (rel_buffer + filename_len <= rel_buf_p + 3)
return filename;
*rel_buf_p++ = '.';
*rel_buf_p++ = '/';
}
+ /* Then tack on the unmatched part of the desired file's name. */
do
{
if (rel_buffer + filename_len <= rel_buf_p)