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f0eb8ce77b
- schhist/gitwhoareyounow: trace a file name in git history across renames - schhist/README: documentation of tools, starting with gitwhoareyounow
50 lines
1.1 KiB
Bash
Executable File
50 lines
1.1 KiB
Bash
Executable File
#!/bin/sh
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#
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# gitwhoareyounow - Trace the future of a file in git across renames
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#
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# Written 2010 by Werner Almesberger
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# Copyright 2010 Werner Almesberger
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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usage()
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{
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cat <<EOF 2>&1
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usage: $0 repo-dir path
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The file to trace must be at repo-dir/path
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The repo must be on a branch in the past of the current master.
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EOF
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exit 1
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}
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if [ -z "$2" -o ! -z "$3" ]; then
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usage
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fi
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if [ ! -d "$1" -o ! -d "$1/.git" ]; then
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echo "no git repository at $1" 1>&2
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exit 1
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fi
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if [ ! -f "$1/$2" ]; then
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echo "cannot find $2" 2>&1
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exit 1
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fi
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cd "$1" || exit
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prev=`git rev-parse @{0}`
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name=$2
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for n in `git rev-list --reverse ..master`; do
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new=`git diff-tree --name-status -r -M $prev $n |
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awk -F '\t' '$1~/^R/ && $2=="'"$name"'" { print $3 }'`
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[ -z "$new" ] || name=$new
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prev=$n
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done
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echo "$name"
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