Add various other shell implementations support
Tested in busybox, mksh, ksh and dash. Ksh has issues described in troubleshooting.
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@ -132,3 +132,10 @@ To get rid of these lags there currently are two options:
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the future.
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* Compile and install ``libzpython`` module that lives in
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https://bitbucket.org/ZyX_I/zpython. This variant is zsh-specific.
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Prompt is spoiled after completing files in ksh
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-----------------------------------------------
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This is exactly why powerline has official mksh support, but not official ksh
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support. If you know the solution feel free to share it in `powerline bug
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tracker <https://github.com/Lokaltog/powerline/issues/new>`_.
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@ -166,6 +166,38 @@ is the absolute path to your Powerline installation directory:
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.. _tmux-statusline:
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Busybox (ash), mksh and dash prompt
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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After launching busybox run the following command:
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.. code-block:: bash
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. {repository_root}/powerline/bindings/shell/powerline.sh
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Mksh users may put this line into ``~/.mkshrc`` file. Dash users may use the
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following in ``~/.profile``:
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.. code-block:: bash
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if test "x$0" != "x${0#dash}" ; then
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export ENV={repository_root}/powerline/bindings/shell/powerline.sh
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fi
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.. note::
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Dash users that already have ``$ENV`` defined should either put the ``.
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…/shell/powerline.sh`` line in the ``$ENV`` file or create a new file which
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will source (using ``.`` command) both former ``$ENV`` file and
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:file:`powerline.sh` files and set ``$ENV`` to the path of this new file.
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.. warning::
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Job count is using some weird hack that uses signals and temporary files for
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interprocess communication. It may be wrong sometimes. Not the case in mksh.
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.. warning::
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Busybox has two shells: ``ash`` and ``hush``. Second is known to segfault in
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busybox 1.22.1 when using :file:`powerline.sh` script.
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Tmux statusline
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---------------
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@ -0,0 +1,181 @@
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_powerline_columns_fallback() {
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if which stty >/dev/null ; then
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# Ksh does not have “local” built-in
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_powerline_cols="$(stty size 2>/dev/null)"
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if ! test -z "$_powerline_cols" ; then
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echo "${_powerline_cols#* }"
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return 0
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fi
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fi
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echo 0
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return 0
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}
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_powerline_has_jobs_in_subshell() {
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if test -n "$_POWERLINE_HAS_JOBS_IN_SUBSHELL" ; then
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return $_POWERLINE_HAS_JOBS_IN_SUBSHELL
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elif test -z "$1" ; then
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sleep 1 &
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# Check whether shell outputs anything in a subshell when using jobs
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# built-in. Shells like dash will not output anything meaning that
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# I have to bother with temporary files.
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test "$(jobs -p|wc -l)" -gt 0
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else
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case "$1" in
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dash|bb|ash) return 1 ;;
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mksh|ksh|bash) return 0 ;;
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*) _powerline_has_jobs_in_subshell ;;
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esac
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fi
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_POWERLINE_HAS_JOBS_IN_SUBSHELL=$?
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return $_POWERLINE_HAS_JOBS_IN_SUBSHELL
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}
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_powerline_set_append_trap() {
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if _powerline_has_jobs_in_subshell "$@" ; then
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_powerline_append_trap() {
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# Arguments: command, signal
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# Ksh does not have “local” built-in
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_powerline_traps="$(trap)"
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if echo "$_powerline_traps" | grep -cm1 $2'$' >/dev/null ; then
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_powerline_traps="$(echo "$_powerline_traps" | sed "s/ $2/'\\n$1' $2/")"
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eval "$_powerline_traps"
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fi
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}
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else
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_powerline_append_trap() {
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# Arguments: command, signal
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_powerline_create_temp
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trap > $_POWERLINE_TEMP
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if grep -cm1 $2'$' $_POWERLINE_TEMP >/dev/null ; then
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sed -i -e "s/ $2/'\\n$1' $2/"
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. $_POWERLINE_TEMP
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else
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trap "$1" $2
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fi
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echo -n > $_POWERLINE_TEMP
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}
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fi
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_powerline_set_append_trap() {
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return 0
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}
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}
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_powerline_create_temp() {
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if test -z "$_POWERLINE_TEMP" || ! test -e "$_POWERLINE_TEMP" ; then
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_POWERLINE_TEMP="$(mktemp)"
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_powerline_append_trap 'rm $_POWERLINE_TEMP' EXIT
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fi
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}
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_powerline_set_set_jobs() {
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if _powerline_has_jobs_in_subshell "$@" ; then
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_powerline_set_jobs() {
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_POWERLINE_JOBS="$(jobs -p|wc -l)"
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}
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else
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_powerline_set_append_trap "$@"
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_POWERLINE_PID=$$
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_powerline_append_trap '_powerline_do_set_jobs' USR1
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_powerline_do_set_jobs() {
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_powerline_create_temp
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jobs -p > $_POWERLINE_TEMP
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}
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# This command will always be launched from a subshell, thus a hack is
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# needed to run `jobs -p` outside of the subshell.
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_powerline_set_jobs() {
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kill -USR1 $_POWERLINE_PID
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# Note: most likely this will read data from the previous run. Tests
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# show that it is OK for some reasons.
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_POWERLINE_JOBS="$(wc -l < $_POWERLINE_TEMP)"
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}
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fi
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_powerline_set_set_jobs() {
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return 0
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}
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}
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_powerline_set_command() {
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if test -z "${POWERLINE_COMMAND}" ; then
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if which powerline-client >/dev/null ; then
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export POWERLINE_COMMAND=powerline-client
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elif which powerline >/dev/null ; then
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export POWERLINE_COMMAND=powerline
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else
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# `$0` is set to `-bash` when using SSH so that won't work
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export POWERLINE_COMMAND="$(dirname "$BASH_SOURCE")/../../../scripts/powerline"
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fi
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fi
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}
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_powerline_tmux_setenv() {
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TMUX="$_POWERLINE_TMUX" tmux setenv -g TMUX_"$1"_`tmux display -p "#D" | tr -d %` "$2"
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TMUX="$_POWERLINE_TMUX" tmux refresh -S
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}
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_powerline_tmux_set_pwd() {
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if test "x$_POWERLINE_SAVED_PWD" != "x$PWD" ; then
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_POWERLINE_SAVED_PWD="$PWD"
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_powerline_tmux_setenv PWD "$PWD"
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fi
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}
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_powerline_tmux_set_columns() {
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_powerline_tmux_setenv COLUMNS "${COLUMNS:-$(_powerline_columns_fallback)}"
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}
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_powerline_set_renderer_arg() {
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case "$1" in
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bb|ash) _POWERLINE_RENDERER_ARG="-rbash_prompt" ;;
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mksh|ksh) _POWERLINE_RENDERER_ARG="-rksh_prompt" ;;
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bash|dash) _POWERLINE_RENDERER_ARG= ;;
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esac
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}
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_powerline_set_jobs() {
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_powerline_set_set_jobs
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_powerline_set_jobs
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}
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_powerline_prompt() {
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# Arguments: side, exit_code
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_powerline_set_jobs
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$POWERLINE_COMMAND shell $1 -w "${COLUMNS:-$(_powerline_columns_fallback)}" $_POWERLINE_RENDERER_ARG --last_exit_code=$2 --jobnum=$_POWERLINE_JOBS
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}
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_powerline_setup_prompt() {
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VIRTUAL_ENV_DISABLE_PROMPT=1
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_powerline_set_append_trap "$@"
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_powerline_set_set_jobs "$@"
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_powerline_set_command "$@"
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_powerline_set_renderer_arg "$@"
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PS1='$(_powerline_prompt aboveleft $?)'
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}
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_powerline_init_tmux_support() {
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# Dash does not have &>/dev/null
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if test -n "$TMUX" && tmux refresh -S >/dev/null 2>/dev/null ; then
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# TMUX variable may be unset to create new tmux session inside this one
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_POWERLINE_TMUX="$TMUX"
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_powerline_set_append_trap "$@"
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# If _powerline_tmux_set_pwd is used before _powerline_prompt it sets $?
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# to zero in ksh.
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PS1="$PS1"'$(_powerline_tmux_set_pwd)'
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_powerline_append_trap '_powerline_tmux_set_columns' WINCH
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_powerline_tmux_set_columns
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fi
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}
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# Strips the leading `-`: it may be present when shell is a login shell
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_POWERLINE_USED_SHELL=${0#-}
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_POWERLINE_USED_SHELL=${_POWERLINE_USED_SHELL#/usr}
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_POWERLINE_USED_SHELL=${_POWERLINE_USED_SHELL#/bin/}
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if test -z "$POWERLINE_NO_BB_PROMPT$POWERLINE_NO_SHELL_PROMPT" ; then
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_powerline_setup_prompt $_POWERLINE_USED_SHELL
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fi
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if test -z "$POWERLINE_NO_BB_TMUX_SUPPORT$POWERLINE_NO_SHELL_TMUX_SUPPORT" ; then
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_powerline_init_tmux_support $_POWERLINE_USED_SHELL
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fi
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@ -0,0 +1,20 @@
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# vim:fileencoding=utf-8:noet
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from __future__ import absolute_import, unicode_literals
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from powerline.renderers.shell import ShellRenderer
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ESCAPE_CHAR = '\001'
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class KshPromptRenderer(ShellRenderer):
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'''Powerline bash prompt segment renderer.'''
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escape_hl_start = '\001'
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escape_hl_end = '\001'
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def render(self, *args, **kwargs):
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return '\001\r' + super(KshPromptRenderer, self).render(*args, **kwargs)
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renderer = KshPromptRenderer
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