pre-commit-annex hook script to automatically extract metadata from lots of types of files
Using the extract(1) program to do the heavy lifting. Decided to make git-annex run pre-commit-annex when committing. Since git-annex pre-commit also runs it, it'll be run when git commit is run too, via the pre-commit hook. This basically gives back the pre-commit hook that git-annex took away. The implementation avoids repeatedly looking for the hook script when the assistant is running and committing repeatedly; only checks if the hook is available once. To make the script simpler, made git-annex metadata -s field?=value only set a field when it's not already got a value. This commit was sponsored by bak.
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@ -56,14 +56,7 @@ once, and can be left alone when refining a view.
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When annex.genmetadata is set, git annex add automatically attaches
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some metadata to a file. Currently year and month fields, from its mtime.
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TODO A git hook could be run by git annex add to gather more metadata.
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For example, by examining file permisions or MP3 metadata.
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Alternatively, this could be a
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regular post-commit hook, that examines the files committed, and runs git
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annex metadata to add metadata. No extra git-annex support is needed
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to do that!
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However, in direct mode, or when using the assistant, git-annex does its
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own committing, not using git commit, so bypassing the commit hooks.
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There's also a post-commit-annex hook script.
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## directory hierarchy metadata
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