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58 lines
1.4 KiB
58 lines
1.4 KiB
#!/bin/sh |
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CF=CREDITS-FILE |
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tip= |
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tree_search () |
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{ |
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head=$1 |
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tree=$2 |
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for p in $(git rev-list --parents --max-count=1 $head 2>/dev/null) |
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do |
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test $tree = $(git rev-parse $p^{tree} 2>/dev/null) && |
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vn=$(git describe --abbrev=4 $p 2>/dev/null) && |
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case "$vn" in |
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gitgui-[0-9]*) echo $p; break;; |
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esac |
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done |
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} |
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generate_credits () |
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{ |
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tip=$1 && |
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rm -f $CF && |
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git shortlog -n -s $tip | sed 's/: .*$//' >$CF || exit |
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} |
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# Always use the tarball credits file if found, just |
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# in case we are somehow contained in a larger git |
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# repository that doesn't actually track our state. |
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# (At least one package manager is doing this.) |
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# |
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# We may be a subproject, so try looking for the merge |
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# commit that supplied this directory content if we are |
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# not at the toplevel. We probably will always be the |
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# second parent in the commit, but we shouldn't rely on |
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# that fact. |
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# |
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if test -f credits |
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then |
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rm -f $CF && |
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cp credits $CF || exit |
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elif prefix="$(git rev-parse --show-prefix 2>/dev/null)" && |
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test -n "$prefix" && |
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head=$(git rev-list --max-count=1 HEAD -- . 2>/dev/null) && |
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tree=$(git rev-parse --verify "HEAD:$prefix" 2>/dev/null) && |
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tip=$(tree_search $head $tree) && |
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test -n "$tip" |
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then |
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generate_credits $tip || exit |
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elif tip="$(git rev-parse --verify HEAD 2>/dev/null)" && |
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test -n "$tip" |
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then |
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generate_credits $tip || exit |
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else |
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echo "error: Cannot locate authorship information." >&2 |
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exit 1 |
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fi
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