240 lines
6.3 KiB
Bash
240 lines
6.3 KiB
Bash
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_POWERLINE_SOURCED="$_"
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_powerline_columns_fallback() {
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if which stty >/dev/null ; then
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# Ksh does not have “local” built-in
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_powerline_cols="$(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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else
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trap "$1" $2
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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 "${TMPDIR:-/tmp}/powerline.XXXXXXXX")"
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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="$(jobs -p|wc -l|tr -d ' ')"
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}
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else
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_powerline_set_append_trap "$@"
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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 | tr -d ' ')"
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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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POWERLINE_COMMAND="$("$POWERLINE_CONFIG_COMMAND" shell command)"
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fi
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}
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_powerline_tmux_pane() {
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echo "${TMUX_PANE:-`TMUX="$_POWERLINE_TMUX" tmux display -p "#D"`}" | \
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tr -d ' %'
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}
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_powerline_tmux_setenv() {
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TMUX="$_POWERLINE_TMUX" tmux setenv -g TMUX_"$1"_`_powerline_tmux_pane` "$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 "$_POWERLINE_SAVED_PWD" != "$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="-r .bash" ;;
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mksh|ksh) _POWERLINE_RENDERER_ARG="-r .ksh" ;;
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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_local_prompt() {
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# Arguments: side, exit_code, local theme
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_powerline_set_jobs
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"$POWERLINE_COMMAND" $POWERLINE_COMMAND_ARGS shell $1 \
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$_POWERLINE_RENDERER_ARG \
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--renderer-arg="client_id=$$" \
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--last-exit-code=$2 \
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--jobnum=$_POWERLINE_JOBS \
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--renderer-arg="local_theme=$3"
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}
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_powerline_prompt() {
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# Arguments: side, exit_code
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_powerline_set_jobs
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"$POWERLINE_COMMAND" $POWERLINE_COMMAND_ARGS shell $1 \
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--width="${COLUMNS:-$(_powerline_columns_fallback)}" \
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$_POWERLINE_RENDERER_ARG \
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--renderer-arg="client_id=$$" \
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--last-exit-code=$2 \
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--jobnum=$_POWERLINE_JOBS
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_powerline_update_psN
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}
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_powerline_setup_psN() {
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case "$1" in
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mksh|ksh|bash)
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_POWERLINE_PID=$$
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_powerline_update_psN() {
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kill -USR1 $_POWERLINE_PID
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}
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# No command substitution in PS2 and PS3
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_powerline_set_psN() {
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if test -n "$POWERLINE_SHELL_CONTINUATION" ; then
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PS2="$(_powerline_local_prompt left $? continuation)"
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fi
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if test -n "$POWERLINE_SHELL_SELECT" ; then
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PS3="$(_powerline_local_prompt left $? select)"
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fi
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}
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_powerline_append_trap '_powerline_set_psN' USR1
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_powerline_set_psN
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;;
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bb|ash|dash)
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_powerline_update_psN() {
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# Do nothing
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return
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}
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PS2='$(_powerline_local_prompt left $? continuation)'
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# No select support
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;;
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esac
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}
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_powerline_setup_prompt() {
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VIRTUAL_ENV_DISABLE_PROMPT=1
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_powerline_set_append_trap "$@"
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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 $?)'
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PS2="$(_powerline_local_prompt left 0 continuation)"
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PS3="$(_powerline_local_prompt left 0 select)"
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_powerline_setup_psN "$@"
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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"'$(_powerline_tmux_set_pwd)'
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_powerline_append_trap '_powerline_tmux_set_columns' WINCH
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_powerline_tmux_set_columns
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fi
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}
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if test -z "${POWERLINE_CONFIG_COMMAND}" ; then
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if which powerline-config >/dev/null ; then
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POWERLINE_CONFIG_COMMAND=powerline-config
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else
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POWERLINE_CONFIG_COMMAND="$(dirname "$_POWERLINE_SOURCED")/../../../scripts/powerline-config"
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fi
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fi
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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##*/}
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if "${POWERLINE_CONFIG_COMMAND}" shell uses tmux ; then
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_powerline_init_tmux_support $_POWERLINE_USED_SHELL
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fi
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if "${POWERLINE_CONFIG_COMMAND}" shell --shell=bash uses prompt ; then
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_powerline_setup_prompt $_POWERLINE_USED_SHELL
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fi
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