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2ce633b928
Sometimes it is asked on the list how to revert selected path in the index from a tree, most often HEAD, without affecting the files in the working tree. A similar operation that also affects the working tree files has been available in the form of "git checkout <tree> -- <paths>...". By definition --soft would never affect either the index nor the working tree files, and --hard is the way to make the working tree files as close to pristine, so this new option is available only for the default --mixed case. Signed-off-by: Junio C Hamano <junkio@cox.net>
101 lines
2 KiB
Bash
Executable file
101 lines
2 KiB
Bash
Executable file
#!/bin/sh
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#
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# Copyright (c) 2005, 2006 Linus Torvalds and Junio C Hamano
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#
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USAGE='[--mixed | --soft | --hard] [<commit-ish>] [ [--] <paths>...]'
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SUBDIRECTORY_OK=Yes
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. git-sh-setup
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update= reset_type=--mixed
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unset rev
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while case $# in 0) break ;; esac
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do
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case "$1" in
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--mixed | --soft | --hard)
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reset_type="$1"
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;;
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--)
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break
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;;
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-*)
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usage
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;;
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*)
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rev=$(git-rev-parse --verify "$1") || exit
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shift
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break
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;;
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esac
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shift
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done
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: ${rev=HEAD}
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rev=$(git-rev-parse --verify $rev^0) || exit
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# Skip -- in "git reset HEAD -- foo" and "git reset -- foo".
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case "$1" in --) shift ;; esac
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# git reset --mixed tree [--] paths... can be used to
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# load chosen paths from the tree into the index without
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# affecting the working tree nor HEAD.
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if test $# != 0
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then
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test "$reset_type" == "--mixed" ||
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die "Cannot do partial $reset_type reset."
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git ls-tree -r --full-name $rev -- "$@" |
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git update-index --add --index-info || exit
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git update-index --refresh
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exit
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fi
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TOP=$(git-rev-parse --show-cdup)
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if test ! -z "$TOP"
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then
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cd "$TOP"
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fi
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if test "$reset_type" = "--hard"
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then
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update=-u
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fi
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# Soft reset does not touch the index file nor the working tree
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# at all, but requires them in a good order. Other resets reset
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# the index file to the tree object we are switching to.
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if test "$reset_type" = "--soft"
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then
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if test -f "$GIT_DIR/MERGE_HEAD" ||
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test "" != "$(git-ls-files --unmerged)"
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then
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die "Cannot do a soft reset in the middle of a merge."
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fi
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else
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git-read-tree --reset $update "$rev" || exit
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fi
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# Any resets update HEAD to the head being switched to.
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if orig=$(git-rev-parse --verify HEAD 2>/dev/null)
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then
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echo "$orig" >"$GIT_DIR/ORIG_HEAD"
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else
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rm -f "$GIT_DIR/ORIG_HEAD"
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fi
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git-update-ref -m "reset $reset_type $*" HEAD "$rev"
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update_ref_status=$?
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case "$reset_type" in
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--hard )
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;; # Nothing else to do
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--soft )
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;; # Nothing else to do
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--mixed )
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# Report what has not been updated.
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git-update-index --refresh
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;;
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esac
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rm -f "$GIT_DIR/MERGE_HEAD" "$GIT_DIR/rr-cache/MERGE_RR" \
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"$GIT_DIR/SQUASH_MSG" "$GIT_DIR/MERGE_MSG"
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exit $update_ref_status
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