Merge pull request #232 from rhopfer/feature-bash-completion

Add bash-completion

_vcsh_bash

+# bash completion for vcsh.
+
+# run git command
+#   based on bash_completion:_command_offset()
+_vcsh_git_command () {
+	local word_offset=$1
+	for (( i=0; i < $word_offset; i++ )); do
+		for (( j=0; j <= ${#COMP_LINE}; j++ )); do
+			[[ "$COMP_LINE" == "${COMP_WORDS[i]}"* ]] && break
+			COMP_LINE=${COMP_LINE:1}
+			((COMP_POINT--))
+		done
+		COMP_LINE=${COMP_LINE#"${COMP_WORDS[i]}"}
+		((COMP_POINT-=${#COMP_WORDS[i]}))
+	done
+	COMP_LINE="git $COMP_LINE"
+	((COMP_POINT+=4))
+
+	# shift COMP_WORDS elements and adjust COMP_CWORD
+	for (( i=1; i <= COMP_CWORD - $word_offset + 1; i++ )); do
+		COMP_WORDS[i]=${COMP_WORDS[i+$word_offset-1]}
+	done
+	for (( i; i <= COMP_CWORD; i++ )); do
+		unset 'COMP_WORDS[i]'
+	done
+	COMP_WORDS[0]=git
+	((COMP_CWORD -= $word_offset - 1))
+
+	local cspec=$( complete -p git 2>/dev/null )
+	if [[ -n $cspec ]]; then
+		if [[ ${cspec#* -F } != $cspec ]]; then
+			local func=${cspec#*-F }
+			func=${func%% *}
+
+			if [[ ${#COMP_WORDS[@]} -ge 2 ]]; then
+				$func git "${COMP_WORDS[${#COMP_WORDS[@]}-1]}" "${COMP_WORDS[${#COMP_WORDS[@]}-2]}"
+			else
+				$func git "${COMP_WORDS[${#COMP_WORDS[@]}-1]}"
+			fi
+
+			# restore initial compopts
+			local opt
+			while [[ $cspec == *" -o "* ]]; do
+				# FIXME: should we take "+o opt" into account?
+				cspec=${cspec#*-o }
+				opt=${cspec%% *}
+				compopt -o $opt
+				cspec=${cspec#$opt}
+			done
+		fi
+	fi
+}
+
+_vcsh () {
+	local cur prev words cword OPTS
+	_init_completion -n = || return
+
+	local repos cmds
+	repos=( $(command vcsh list) )
+	cmds="clone delete enter foreach help init list list-tracked list-untracked
+		  pull push rename run status upgrade version which write-gitignore"
+
+	local subcword cmd subcmd
+	for (( subcword=1; subcword < ${#words[@]}-1; subcword++ )); do
+		[[ -n $cmd && ${words[subcword]} != -* ]] && subcmd=${words[subcword]} && break
+		[[ ${words[subcword]} != -* ]] && cmd=${words[subcword]}
+	done
+
+	if [[ -z $cmd ]]; then
+		case $prev in
+			-c)
+				COMPREPLY=( $(compgen -f -- $cur) )
+				return
+				;;
+		esac
+
+		case $cur in
+			-*)
+				OPTS='-c -d -h -v'
+				COMPREPLY=( $(compgen -W "${OPTS[*]}" -- $cur) )
+				return
+				;;
+		esac
+		COMPREPLY=( $(compgen -W "${repos[*]} ${cmds[*]}" -- $cur) )
+		return 0
+	fi
+
+	case $cmd in
+		help|init|list|pull|push|version|which)
+			return
+			;;
+
+		list-untracked)
+			[[ $cur == -* ]] && \
+				COMPREPLY=( $(compgen -W '-a -r' -- $cur) ) && return
+			;;&
+
+		run)
+			if [[ -n $subcmd && -n "${repos[$subcmd]}" ]]; then
+				_command_offset $(( $subcword+1 ))
+				return
+			fi
+			;;&
+
+		delete|enter|list-tracked|list-untracked|rename|run|status|upgrade|write-gitignore)
+			# return repos
+			if [[ -z $subcmd ]]; then
+				COMPREPLY=( $(compgen -W "${repos[*]}" -- $cur) )
+				return
+			fi
+			return
+			;;
+
+		clone)
+			[[ $cur == -* ]] && \
+				COMPREPLY=( $(compgen -W '-b' -- $cur) )
+			return
+			;;
+
+		foreach)
+			[[ $cur == -* ]] \
+				&& COMPREPLY=( $(compgen -W "-g" -- $cur) ) && return
+			_vcsh_git_command $subcword
+			return
+			;;
+
+	esac
+
+	# git command on repository
+	if [[ -n "${repos[$cmd]}" ]]; then
+		_vcsh_git_command $subcword
+	fi
+	return 0
+}
+
+complete -F _vcsh vcsh
+
+# vim: ft=sh: