Module mac_alias 

Classic Mac alias resolution.

Parses the alis resource record stored in a file’s resource fork (the marker for aliases is kIsAlias/0x8000 in FInfo.fdFlags).

We extract just enough to show the user where an alias points:

• Target filename (from the fixed portion at offset 50)
• Volume name (from the fixed portion at offset 10)
• Optional absolute path from tagged record 18 (UTF-8) or 2 (MacRoman)

We do not attempt to follow the alias; the target may no longer exist.

Constants

IS_ALIAS_FLAG

Finder flag bit indicating the file is an alias.

RHAP_CREATOR

Creator code for classic HFS+ UNIX symlinks.

SLNK_TYPE

Type code for classic HFS+ UNIX symlinks.

Functions

find_alis_in_resource_fork

Parse a resource fork and return the data bytes of the first alis resource, if any.

parse_alis_record

Parse an alis resource record and return a human-readable target string like "Volume:TargetName", or an absolute path when one is present.

resolve_alias_target

One-shot helper: given raw resource-fork bytes, return a display string for the alias target, or None if no alis resource is present / parseable.