- // control characters do not cause issues with any platforms I know of, but they are usually annoying to deal with
- // ../ is parent directory on many platforms
- // // is parent directory on Amiga
- // / at the beginning of a path is root on unix, and parent directory on Amiga
- // : is root of drive on Amiga (also used as a directory separator on Mac, but / works there too, so that's a bad idea)
- // \ is a windows-ism (so it's naughty to use it, / works on all platforms)
- for (i = 0;filename[i];i++)
- {
- if (filename[i] < ' ' || (filename[i] == '/' && filename[i+1] == '/') || (filename[i] == '.' && filename[i+1] == '.') || filename[i] == ':' || filename[i] == '\\' || filename[0] == '/')
- {
- Con_Printf("PF_fopen: dangerous/confusing/annoying/non-portable filename \"%s\" not allowed. (contains control characters or // or .. or : or \\ or begins with /)\n", filename);
- G_FLOAT(OFS_RETURN) = -4;
- return;
- }
- }