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Diffstat (limited to 'git-deltafy-script')
-rw-r--r-- | git-deltafy-script | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/git-deltafy-script b/git-deltafy-script new file mode 100644 index 0000000000..c23f215119 --- /dev/null +++ b/git-deltafy-script @@ -0,0 +1,39 @@ +#!/bin/bash + +# Script to deltafy an entire GIT repository based on the commit list. +# The most recent version of a file is the reference and previous versions +# are made delta against the best earlier version available. And so on for +# successive versions going back in time. This way the delta overhead is +# pushed towards older version of any given file. +# +# NOTE: the "best earlier version" is not implemented in mkdelta yet +# and therefore only the next eariler version is used at this time. +# +# TODO: deltafy tree objects as well. +# +# The -d argument allows to provide a limit on the delta chain depth. +# If 0 is passed then everything is undeltafied. + +set -e + +depth= +[ "$1" == "-d" ] && depth="--max-depth=$2" && shift 2 + +curr_file="" + +git-rev-list HEAD | +git-diff-tree -r --stdin | +sed -n '/^\*/ s/^.*->\(.\{41\}\)\(.*\)$/\2 \1/p' | sort | uniq | +while read file sha1; do + if [ "$file" == "$curr_file" ]; then + list="$list $sha1" + else + if [ "$list" ]; then + echo "Processing $curr_file" + echo "$head $list" | xargs git-mkdelta $depth -v + fi + curr_file="$file" + list="" + head="$sha1" + fi +done |