CPU temperature segment

CHANGELOG.md

@@ -12,6 +12,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - [`dropbox_status.sh`](segments/dropbox_status.sh) a new segment showing Dropbox operation statuses. [#478](https://github.com/erikw/tmux-powerline/pull/478)
 - Proper error logging in segments with function `tp_err_seg()`. [#486](https://github.com/erikw/tmux-powerline/pull/486) [#485](https://github.com/erikw/tmux-powerline/pull/485)
 - Adapter segments for [tmux-continuum](https://github.com/tmux-plugins/tmux-continuum/): [`tmux_continuum_save.sh`](segments/tmux_continuum_save.sh) and [`tmux_continuum_status.sh`](segments/tmux_continuum_status.sh) [#493](https://github.com/erikw/tmux-powerline/pull/493)
+- [`cpu_temp.sh`](segments/cpu_temp.sh): CPU temperature. [#495](https://github.com/erikw/tmux-powerline/pull/495)
 ### Changed
 - **Deprecation Warning:** functions `patched_font_in_use()`, `air_color()` and `format()` have been replaced by `tp_patched_font_in_use()`, `tp_air_color()` and `tp_format()` respectively and will be removed in future releases.
 Please update your custom themes and segments now. [#489](https://github.com/erikw/tmux-powerline/pull/489)

README.md

@@ -103,6 +103,7 @@ Requirements for the lib to work are:
 ## Segment Requirements
 Some segments have their own requirements. If you enable them in your theme, make sure all requirements are met for those.
 
+* **cpu_temp.sh**: `lm_sensors` for Linux, [smctemp](https://github.com/narugit/smctemp) for Macos
 * **dropbox_status.sh**: `dropbox-cli`
 * **github_notifications.sh**: `jq`, `curl`
 * **ifstat.sh**: `ifstat` (there is a simpler segment `ifstat_sys.sh` not using ifstat)

lib/cpu_temp_helper.sh

@@ -0,0 +1,16 @@
+# shellcheck shell=bash
+
+tp_cpu_temp_value() {
+	if tp_shell_is_macos; then
+		smctemp -c | bc -l
+	elif tp_shell_is_linux; then
+		sensors \
+			| grep "$TMUX_POWERLINE_SEG_CPU_TEMP_SENSORS_LINE_MARKER" -m 1 \
+			| sed -e 's/[^+]*+\([\s0-9\.]*\).*/\1/' | bc -l
+	fi
+}
+
+tp_cpu_temp_at_least() {
+	echo "$(tp_cpu_temp_value) >= $1" | bc -l
+}
+

lib/headers.sh

@@ -26,3 +26,5 @@ source "${TMUX_POWERLINE_DIR_LIB}/muting.sh"
 source "${TMUX_POWERLINE_DIR_LIB}/powerline.sh"
 # shellcheck source=lib/config_file.sh
 source "${TMUX_POWERLINE_DIR_LIB}/config_file.sh"
+# shellcheck source=lib/cpu_temp_helper.sh
+source "${TMUX_POWERLINE_DIR_LIB}/cpu_temp_helper.sh"

segments/cpu_temp.sh

@@ -0,0 +1,44 @@
+# shellcheck shell=bash
+# Prints CPU temperature
+# Requirements:
+#   lm_sensors (Linux only)
+#   smctemp (Macos only)
+
+TMUX_POWERLINE_SEG_CPU_TEMP_ICON_DEFAULT=" "
+TMUX_POWERLINE_SEG_CPU_TEMP_SENSORS_LINE_MARKER_DEFAULT="Package id 0\|Physical id 0\|temp1"
+
+generate_segmentrc() {
+	read -r -d '' rccontents <<EORC
+# CPU temperature icon
+export TMUX_POWERLINE_SEG_CPU_TEMP_ICON="${TMUX_POWERLINE_SEG_CPU_TEMP_ICON_DEFAULT}"
+# Linux only. Regexp to indicate a line containing CPU temperature in 'sensors' output.
+# Check the output of 'sensors' program, decide which line contains desired CPU temperature
+# and store an unique part of that line in this variable. It will be used by 'grep' program
+# to distinct the 'CPU temperature' line from the rest output lines.
+export TMUX_POWERLINE_SEG_CPU_TEMP_SENSORS_LINE_MARKER="${TMUX_POWERLINE_SEG_CPU_TEMP_SENSORS_LINE_MARKER_DEFAULT}"
+EORC
+	echo "$rccontents"
+}
+
+run_segment() {
+	__process_settings
+
+	local temp
+	temp=$(tp_cpu_temp_value)
+
+	if [ -n "$temp" ]; then
+		echo "${TMUX_POWERLINE_SEG_CPU_TEMP_ICON}${temp}°"
+		return 0
+	else
+		return 1
+	fi
+}
+
+__process_settings() {
+	if [ -z "$TMUX_POWERLINE_SEG_CPU_TEMP_ICON" ]; then
+		export TMUX_POWERLINE_SEG_CPU_TEMP_ICON="${TMUX_POWERLINE_SEG_CPU_TEMP_ICON_DEFAULT}"
+	fi
+	if [ -z "$TMUX_POWERLINE_SEG_CPU_TEMP_SENSORS_LINE_MARKER" ]; then
+		export TMUX_POWERLINE_SEG_CPU_TEMP_SENSORS_LINE_MARKER="${TMUX_POWERLINE_SEG_CPU_TEMP_SENSORS_LINE_MARKER_DEFAULT}"
+	fi
+}

themes/default.sh

@@ -133,6 +133,13 @@ if [ -z "$TMUX_POWERLINE_RIGHT_STATUS_SEGMENTS" ]; then
 		#"air ${TMUX_POWERLINE_SEG_AIR_COLOR} 255"
 		"weather 37 255"
 		#"rainbarf 0 ${TMUX_POWERLINE_DEFAULT_FOREGROUND_COLOR}"
+		# "$(
+		# 	if (($(tp_cpu_temp_at_least 60))); then
+		# 		echo "cpu_temp #ff2020 235"
+		# 	else
+		# 		echo "cpu_temp #303080 136"
+		# 	fi
+		# )" \
 		#"xkb_layout 125 117"
 		#"tmux_continuum_save"
 		#"tmux_continuum_status 14 7"