41 lines
1.1 KiB
Bash
41 lines
1.1 KiB
Bash
#!/bin/bash
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# Script to deltafy an entire GIT repository based on the commit list.
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# The most recent version of a file is the reference and previous versions
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# are made delta against the best earlier version available. And so on for
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# successive versions going back in time. This way the delta overhead is
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# pushed towards older version of any given file.
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#
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# NOTE: the "best earlier version" is not implemented in mkdelta yet
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# and therefore only the next eariler version is used at this time.
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#
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# TODO: deltafy tree objects as well.
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#
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# The -d argument allows to provide a limit on the delta chain depth.
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# If 0 is passed then everything is undeltafied.
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set -e
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depth=
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[ "$1" == "-d" ] && depth="--max-depth=$2" && shift 2
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curr_file=""
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git-rev-list HEAD |
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git-diff-tree -r --stdin |
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awk '/^:/ { if ($5 == "M" || $5 == "N") print $4, $6 }' |
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LC_ALL=C sort -s -k 2 | uniq |
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while read sha1 file; do
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if [ "$file" == "$curr_file" ]; then
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list="$list $sha1"
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else
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if [ "$list" ]; then
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echo "Processing $curr_file"
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echo "$head $list" | xargs git-mkdelta $depth -v
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fi
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curr_file="$file"
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list=""
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head="$sha1"
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fi
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done
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