1 files changed, 239 insertions, 0 deletions
diff --git a/powerline/bindings/shell/powerline.sh b/powerline/bindings/shell/powerline.sh
new file mode 100644
index 0000000..e1b067d
--- /dev/null
+++ b/powerline/bindings/shell/powerline.sh
@@ -0,0 +1,239 @@
+_POWERLINE_SOURCED="$_"
+_powerline_columns_fallback() {
+	if command -v stty >/dev/null ; then
+		# Ksh does not have “local” built-in
+		_powerline_cols="$(stty size 2>/dev/null)"
+		if ! test -z "$_powerline_cols" ; then
+			echo "${_powerline_cols#* }"
+			return 0
+		fi
+	fi
+	echo 0
+	return 0
+}
+
+_powerline_has_jobs_in_subshell() {
+	if test -n "$_POWERLINE_HAS_JOBS_IN_SUBSHELL" ; then
+		return $_POWERLINE_HAS_JOBS_IN_SUBSHELL
+	elif test -z "$1" ; then
+		sleep 1 &
+		# Check whether shell outputs anything in a subshell when using jobs 
+		# built-in. Shells like dash will not output anything meaning that 
+		# I have to bother with temporary files.
+		test "$(jobs -p|wc -l)" -gt 0
+	else
+		case "$1" in
+			dash|bb|ash) return 1 ;;
+			mksh|ksh|bash) return 0 ;;
+			*) _powerline_has_jobs_in_subshell ;;
+		esac
+	fi
+	_POWERLINE_HAS_JOBS_IN_SUBSHELL=$?
+	return $_POWERLINE_HAS_JOBS_IN_SUBSHELL
+}
+
+_powerline_set_append_trap() {
+	if _powerline_has_jobs_in_subshell "$@" ; then
+		_powerline_append_trap() {
+			# Arguments: command, signal
+			# Ksh does not have “local” built-in
+			_powerline_traps="$(trap)"
+			if echo "$_powerline_traps" | grep -cm1 $2'$' >/dev/null ; then
+				_powerline_traps="$(echo "$_powerline_traps" | sed "s/ $2/'\\n$1' $2/")"
+				eval "$_powerline_traps"
+			else
+				trap "$1" $2
+			fi
+		}
+	else
+		_powerline_append_trap() {
+			# Arguments: command, signal
+			_powerline_create_temp
+			trap > $_POWERLINE_TEMP
+			if grep -cm1 $2'$' $_POWERLINE_TEMP >/dev/null ; then
+				sed -i -e "s/ $2/'\\n$1' $2/"
+				. $_POWERLINE_TEMP
+			else
+				trap "$1" $2
+			fi
+			echo -n > $_POWERLINE_TEMP
+		}
+	fi
+	_powerline_set_append_trap() {
+		return 0
+	}
+}
+
+_powerline_create_temp() {
+	if test -z "$_POWERLINE_TEMP" || ! test -e "$_POWERLINE_TEMP" ; then
+		_POWERLINE_TEMP="$(mktemp "${TMPDIR:-/tmp}/powerline.XXXXXXXX")"
+		_powerline_append_trap 'rm $_POWERLINE_TEMP' EXIT
+	fi
+}
+
+_powerline_set_set_jobs() {
+	if _powerline_has_jobs_in_subshell "$@" ; then
+		_powerline_set_jobs() {
+			_POWERLINE_JOBS="$(jobs -p|wc -l|tr -d ' ')"
+		}
+	else
+		_powerline_set_append_trap "$@"
+		_POWERLINE_PID=$$
+		_powerline_append_trap '_powerline_do_set_jobs' USR1
+		_powerline_do_set_jobs() {
+			_powerline_create_temp
+			jobs -p > $_POWERLINE_TEMP
+		}
+		# This command will always be launched from a subshell, thus a hack is 
+		# needed to run `jobs -p` outside of the subshell.
+		_powerline_set_jobs() {
+			kill -USR1 $_POWERLINE_PID
+			# Note: most likely this will read data from the previous run. Tests 
+			# show that it is OK for some reasons.
+			_POWERLINE_JOBS="$(wc -l < $_POWERLINE_TEMP | tr -d ' ')"
+		}
+	fi
+	_powerline_set_set_jobs() {
+		return 0
+	}
+}
+
+_powerline_set_command() {
+	if test -z "${POWERLINE_COMMAND}" ; then
+		POWERLINE_COMMAND="$("$POWERLINE_CONFIG_COMMAND" shell command)"
+	fi
+}
+
+_powerline_tmux_pane() {
+	echo "${TMUX_PANE:-`TMUX="$_POWERLINE_TMUX" tmux display -p "#D"`}" | \
+		tr -d ' %'
+}
+
+_powerline_tmux_setenv() {
+	TMUX="$_POWERLINE_TMUX" tmux setenv -g TMUX_"$1"_`_powerline_tmux_pane` "$2"
+	TMUX="$_POWERLINE_TMUX" tmux refresh -S
+}
+
+_powerline_tmux_set_pwd() {
+	if test "$_POWERLINE_SAVED_PWD" != "$PWD" ; then
+		_POWERLINE_SAVED_PWD="$PWD"
+		_powerline_tmux_setenv PWD "$PWD"
+	fi
+}
+
+_powerline_tmux_set_columns() {
+	_powerline_tmux_setenv COLUMNS "${COLUMNS:-$(_powerline_columns_fallback)}"
+}
+
+_powerline_set_renderer_arg() {
+	case "$1" in
+		bb|ash) _POWERLINE_RENDERER_ARG="-r .bash" ;;
+		mksh|ksh) _POWERLINE_RENDERER_ARG="-r .ksh" ;;
+		bash|dash) _POWERLINE_RENDERER_ARG= ;;
+	esac
+}
+
+_powerline_set_jobs() {
+	_powerline_set_set_jobs
+	_powerline_set_jobs
+}
+
+_powerline_local_prompt() {
+	# Arguments: side, exit_code, local theme
+	_powerline_set_jobs
+	"$POWERLINE_COMMAND" $POWERLINE_COMMAND_ARGS shell $1 \
+		$_POWERLINE_RENDERER_ARG \
+		--renderer-arg="client_id=$$" \
+		--last-exit-code=$2 \
+		--jobnum=$_POWERLINE_JOBS \
+		--renderer-arg="local_theme=$3"
+}
+
+_powerline_prompt() {
+	# Arguments: side, exit_code
+	_powerline_set_jobs
+	"$POWERLINE_COMMAND" $POWERLINE_COMMAND_ARGS shell $1 \
+		--width="${COLUMNS:-$(_powerline_columns_fallback)}" \
+		$_POWERLINE_RENDERER_ARG \
+		--renderer-arg="client_id=$$" \
+		--last-exit-code=$2 \
+		--jobnum=$_POWERLINE_JOBS
+	_powerline_update_psN
+}
+
+_powerline_setup_psN() {
+	case "$1" in
+		mksh|ksh|bash)
+			_POWERLINE_PID=$$
+			_powerline_update_psN() {
+				kill -USR1 $_POWERLINE_PID
+			}
+			# No command substitution in PS2 and PS3
+			_powerline_set_psN() {
+				if test -n "$POWERLINE_SHELL_CONTINUATION" ; then
+					PS2="$(_powerline_local_prompt left $? continuation)"
+				fi
+				if test -n "$POWERLINE_SHELL_SELECT" ; then
+					PS3="$(_powerline_local_prompt left $? select)"
+				fi
+			}
+			_powerline_append_trap '_powerline_set_psN' USR1
+			_powerline_set_psN
+			;;
+		bb|ash|dash)
+			_powerline_update_psN() {
+				# Do nothing
+				return
+			}
+			PS2='$(_powerline_local_prompt left $? continuation)'
+			# No select support
+			;;
+	esac
+}
+
+_powerline_setup_prompt() {
+	VIRTUAL_ENV_DISABLE_PROMPT=1
+	_powerline_set_append_trap "$@"
+	_powerline_set_set_jobs "$@"
+	_powerline_set_command "$@"
+	_powerline_set_renderer_arg "$@"
+	PS1='$(_powerline_prompt aboveleft $?)'
+	PS2="$(_powerline_local_prompt left 0 continuation)"
+	PS3="$(_powerline_local_prompt left 0 select)"
+	_powerline_setup_psN "$@"
+}
+
+_powerline_init_tmux_support() {
+	# Dash does not have &>/dev/null
+	if test -n "$TMUX" && tmux refresh -S >/dev/null 2>/dev/null ; then
+		# TMUX variable may be unset to create new tmux session inside this one
+		_POWERLINE_TMUX="$TMUX"
+
+		_powerline_set_append_trap "$@"
+
+		# If _powerline_tmux_set_pwd is used before _powerline_prompt it sets $? 
+		# to zero in ksh.
+		PS1="$PS1"'$(_powerline_tmux_set_pwd)'
+		_powerline_append_trap '_powerline_tmux_set_columns' WINCH
+		_powerline_tmux_set_columns
+	fi
+}
+
+if test -z "${POWERLINE_CONFIG_COMMAND}" ; then
+	if command -v powerline-config >/dev/null ; then
+		POWERLINE_CONFIG_COMMAND=powerline-config
+	else
+		POWERLINE_CONFIG_COMMAND="$(dirname "$_POWERLINE_SOURCED")/../../../scripts/powerline-config"
+	fi
+fi
+
+# Strips the leading `-`: it may be present when shell is a login shell
+_POWERLINE_USED_SHELL=${0#-}
+_POWERLINE_USED_SHELL=${_POWERLINE_USED_SHELL##*/}
+
+if "${POWERLINE_CONFIG_COMMAND}" shell uses tmux ; then
+	_powerline_init_tmux_support $_POWERLINE_USED_SHELL
+fi
+if "${POWERLINE_CONFIG_COMMAND}" shell --shell=bash uses prompt ; then
+	_powerline_setup_prompt $_POWERLINE_USED_SHELL
+fi