m/grafX2
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

fix Calculate_relative_path()

Browse Source
This commit is contained in:
Thomas Bernard
2019-02-04 23:45:33 +01:00
parent d131b48274
commit 02f9d68f8e
2 changed files with 22 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

24
src/io.c
View File

@@ -960,13 +960,27 @@ const char * Calculate_relative_path(const char * ref_path, const char * path)
last_separator = i;
#endif
}
if (real_ref_path[i] == '\0' && path[i] == PATH_SEPARATOR[0])
// at this point, all chars from index 0 to i-1 are identical in
// real_ref_path and path.
// real_ref_path[i] and path[i] are either different, or both '\0'
if (real_ref_path[i] == PATH_SEPARATOR[0] && real_ref_path[i + 1] == '\0' && path[i] == '\0')
return "."; // path are identical (real_ref_path has additional trailing separator)
if (real_ref_path[i] == '\0')
{
snprintf(rel_path, MAX_PATH_CHARACTERS, ".%s", path + i); // path is under ref_path
return rel_path;
if (path[i] == '\0')
return "."; // path are identical
// path is under ref_path
if (path[i] == PATH_SEPARATOR[0])
{
snprintf(rel_path, MAX_PATH_CHARACTERS, ".%s", path + i);
return rel_path;
}
else if (i > 0 && real_ref_path[i - 1] == PATH_SEPARATOR[0])
{
snprintf(rel_path, MAX_PATH_CHARACTERS, ".%s", path + i - 1);
return rel_path;
}
}
if (real_ref_path[i] == '\0' && path[i] == '\0')
return "."; // path are identical
if (last_separator <= 0)
return path; // no common part found return absolute path
// count the number of path separators in the reference path