Add bash-completion

diff --git a/_vcsh_bash b/_vcsh_bash
new file mode 100644 (file)
index 0000000..3cfe88a
--- /dev/null
+++ b/_vcsh_bash
@@ -0,0 +1,138 @@
+# 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: