mirror of
https://github.com/git/git
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65 lines
1.3 KiB
Bash
Executable file
65 lines
1.3 KiB
Bash
Executable file
#!/bin/sh
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#
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# Copyright (c) 2005 Linus Torvalds
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# Copyright (c) 2005 Junio C Hamano
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rev=$(git-rev-parse --revs-only --no-flags --sq "$@") || exit
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flags=$(git-rev-parse --no-revs --flags --sq "$@")
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files=$(git-rev-parse --no-revs --no-flags --sq "$@")
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die () {
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echo >&2 "$*"
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exit 1
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}
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# I often say 'git diff --cached -p' and get scolded by git-diff-files, but
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# obviously I mean 'git diff --cached -p HEAD' in that case.
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case "$rev" in
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'')
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case " $flags " in
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*" '--cached' "*)
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rev='HEAD '
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;;
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esac
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esac
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# If we do not have --name-status, --name-only nor -r, default to -p.
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# If we do not have -B nor -C, default to -M.
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case " $flags " in
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*" '--name-status' "* | *" '--name-only' "* | *" '-r' "* )
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;;
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*)
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flags="$flags'-p' " ;;
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esac
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case " $flags " in
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*" '-"[BCM]* | *" '--find-copies-harder' "*)
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;; # something like -M50.
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*)
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flags="$flags'-M' " ;;
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esac
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case "$rev" in
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?*' '?*' '?*)
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echo >&2 "I don't understand"
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exit 1
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;;
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?*' '^?*)
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begin=$(expr "$rev" : '.*^.\([0-9a-f]*\).*') &&
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end=$(expr "$rev" : '.\([0-9a-f]*\). .*') || exit
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cmd="git-diff-tree $flags $begin $end -- $files"
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;;
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?*' '?*)
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cmd="git-diff-tree $flags $rev -- $files"
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;;
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?*' ')
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cmd="git-diff-index $flags $rev -- $files"
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;;
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'')
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cmd="git-diff-files $flags -- $files"
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;;
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*)
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die "I don't understand $*"
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;;
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esac
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eval "$cmd"
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