24 lines
946 B
Markdown
24 lines
946 B
Markdown
- tag: Generalize HEAD to refs
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As part of implementing `tag`, we'll generalize the way we handle HEAD. If you
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think about it, HEAD and tags are similar. They are both ways for ugit to attach
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a name to an OID. In case of HEAD, the name is hardcoded by ugit; in case of
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tags, the name will be provided by the user. It makes sense to handle them
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similarly in *data.py*.
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In *data.py*, let's extend the function `set_HEAD` and `get_HEAD` to
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`update_ref` and `get_ref`. "Ref" is a short for reference, and that's the name
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Git uses. The function will now accept the name of the ref and write/read it as
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a file under *.ugit* directory. Logically, a ref is a named pointer to an object.
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The important change is in *data.py*. The rest of the changes just rename some
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functions:
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```
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- get_HEAD() -> get_ref('HEAD')
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- set_HEAD(oid) -> update_ref('HEAD', oid)
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```
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Note that we didn't change any behaviour of ugit here, this is purely
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refactoring.
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