Commit | Line | Data |
---|---|---|
438d0d5f SK |
1 | #! /bin/bash |
2 | ||
4d314e0f SK |
3 | set -e |
4 | ||
bbb42518 SK |
5 | produce_screen_brightness() { |
6 | screen_brightness_device_path="$1" | |
7 | echo "\ | |
8 | $(cat $screen_brightness_device_path/max_brightness) \ | |
9 | $(cat $screen_brightness_device_path/brightness)\ | |
10 | " | |
11 | } | |
12 | ||
61e5a351 SK |
13 | produce_volume() { |
14 | pactl list sinks \ | |
15 | | awk ' | |
16 | /^\tMute:/ { | |
17 | printf("%s,", $0); | |
18 | } | |
19 | /^\tVolume:/ { | |
20 | for (i=2; i<=NF; i++) printf(" %s", $i); | |
21 | }' \ | |
22 | | awk -v RS=',' ' | |
23 | /^[ \t]*Mute:/ {mute = $2} | |
24 | /^[ \t]*front-left:/ {left = $4} | |
25 | /^[ \t]*front-right:/ {right = $4} | |
26 | END { | |
27 | if (mute == "yes") { | |
28 | printf("x") | |
29 | } else { | |
30 | printf("%s %s", left, right) | |
31 | } | |
32 | } | |
33 | ' | |
34 | } | |
35 | ||
365549a9 SK |
36 | produce_mpd_state() { |
37 | echo 'status' \ | |
38 | | nc 127.0.0.1 6600 \ | |
39 | | awk ' | |
40 | { | |
41 | status[$1] = $2 | |
42 | } | |
43 | ||
44 | /^time: +[0-9]+:[0-9]+$/ { | |
45 | split($2, time, ":") | |
46 | seconds_current = time[1] | |
47 | seconds_total = time[2] | |
48 | ||
49 | hours = int(seconds_current / 60 / 60); | |
50 | secs_beyond_hours = seconds_current - (hours * 60 * 60); | |
51 | mins = int(secs_beyond_hours / 60); | |
52 | secs = secs_beyond_hours - (mins * 60); | |
53 | if (hours > 0) { | |
54 | current_time = sprintf("%d:%.2d:%.2d", hours, mins, secs) | |
55 | } else { | |
56 | current_time = sprintf("%.2d:%.2d", mins, secs) | |
57 | } | |
58 | ||
59 | if (seconds_total > 0) { | |
60 | time_percentage = (seconds_current / seconds_total) * 100 | |
61 | current_percentage = sprintf("%d%%", time_percentage) | |
62 | } else { | |
63 | current_percentage = "~" | |
64 | } | |
65 | } | |
66 | ||
67 | END { | |
68 | state = status["state:"] | |
69 | ||
70 | if (state == "play") { | |
71 | symbol = "▶" | |
72 | } else if (state == "pause") { | |
73 | symbol = "❚❚" | |
74 | } else if (state == "stop") { | |
75 | symbol = "⬛" | |
76 | } else { | |
77 | symbol = "--" | |
78 | } | |
79 | ||
80 | printf(\ | |
81 | "%s %s %s", | |
82 | status["state:"], current_time, current_percentage\ | |
83 | ) | |
84 | } | |
85 | ' | |
86 | } | |
87 | ||
88 | produce_mpd_song() { | |
89 | echo 'currentsong' \ | |
90 | | nc 127.0.0.1 6600 \ | |
91 | | awk ' | |
92 | /^OK/ { | |
93 | next | |
94 | } | |
95 | ||
96 | { | |
97 | key = $1 | |
98 | sub("^" key " +", "") | |
99 | val = $0 | |
100 | data[key] = val | |
101 | } | |
102 | ||
103 | END { | |
104 | name = data["Name:"] | |
105 | title = data["Title:"] | |
106 | file = data["file:"] | |
107 | ||
108 | if (name) { | |
109 | out = name | |
110 | } else if (title) { | |
111 | out = title | |
112 | } else if (file) { | |
113 | last = split(file, parts, "/") | |
114 | out = parts[last] | |
115 | } else { | |
116 | out = "" | |
117 | } | |
118 | print out | |
119 | } | |
120 | ' | |
121 | } | |
438d0d5f | 122 | |
6339a4f8 | 123 | produce_weather() { |
4d314e0f SK |
124 | weather_station_id="$1" |
125 | metar -d "$weather_station_id" 2>&1 \ | |
438d0d5f SK |
126 | | awk ' |
127 | /METAR pattern not found in NOAA data/ { | |
128 | failures++ | |
129 | } | |
130 | ||
131 | /^Temperature/ { | |
132 | celsius = $3; | |
133 | fahrenheit = (celsius * (9 / 5)) + 32; | |
134 | temperature = fahrenheit | |
135 | } | |
136 | ||
137 | END { | |
138 | if (failures > 0) { | |
139 | temperature = "--" | |
140 | } | |
141 | print temperature "°F" | |
142 | }' | |
143 | } | |
144 | ||
6339a4f8 | 145 | produce_datetime() { |
438d0d5f SK |
146 | date +'%a %b %d %H:%M:%S' |
147 | } | |
148 | ||
6339a4f8 | 149 | consume() { |
438d0d5f SK |
150 | pipe="$1" |
151 | tail -f "$pipe" \ | |
152 | | stdbuf -o L awk \ | |
365549a9 SK |
153 | -v opt_debug=0 \ |
154 | -v opt_mpd_song_max_chars=10 \ | |
438d0d5f | 155 | ' |
bbb42518 SK |
156 | /^in:SCREEN_BRIGHTNESS/\ |
157 | { | |
158 | split_msg_parts() | |
159 | set_screen_brightness() | |
160 | } | |
161 | ||
61e5a351 SK |
162 | /^in:VOLUME/\ |
163 | { | |
164 | split_msg_parts() | |
165 | db["volume"] = msg_body | |
166 | } | |
167 | ||
365549a9 SK |
168 | /^in:MPD_STATE/\ |
169 | { | |
170 | split_msg_parts() | |
171 | db["mpd_state"] = $1 | |
172 | db["mpd_curr_song_time"] = $2 | |
173 | db["mpd_curr_song_percent"] = $3 | |
174 | } | |
175 | ||
176 | /^in:MPD_SONG/\ | |
438d0d5f | 177 | { |
365549a9 SK |
178 | split_msg_parts() |
179 | db["mpd_curr_song_name"] = msg_body | |
438d0d5f SK |
180 | } |
181 | ||
365549a9 | 182 | /^in:WEATHER/\ |
438d0d5f | 183 | { |
365549a9 SK |
184 | split_msg_parts() |
185 | db["weather_temperature"] = msg_body | |
438d0d5f SK |
186 | } |
187 | ||
365549a9 | 188 | /^in:DATE_TIME/\ |
438d0d5f | 189 | { |
365549a9 SK |
190 | split_msg_parts() |
191 | db["datetime"] = msg_body | |
192 | } | |
193 | ||
194 | /^out:BAR/\ | |
195 | { | |
196 | split_msg_parts() | |
438d0d5f SK |
197 | print make_bar() |
198 | } | |
199 | ||
365549a9 | 200 | |
bbb42518 SK |
201 | function set_screen_brightness( max, cur) { |
202 | max = $1 | |
203 | cur = $2 | |
204 | db["screen_brightness"] = (cur / max) * 100 | |
205 | } | |
206 | ||
365549a9 SK |
207 | function split_msg_parts() { |
208 | msg_head = $1 | |
209 | sub("^" msg_head " +", "") | |
210 | msg_body = $0 | |
211 | debug(msg_head, msg_body) | |
438d0d5f SK |
212 | } |
213 | ||
365549a9 | 214 | function make_bar( position, bar, sep, i, j) { |
bbb42518 | 215 | position[++i] = sprintf("*%d%%", db["screen_brightness"]) |
61e5a351 | 216 | position[++i] = sprintf("(%s)", db["volume"]) |
365549a9 | 217 | position[++i] = make_status_mpd() |
438d0d5f SK |
218 | position[++i] = db["weather_temperature"] |
219 | position[++i] = db["datetime"] | |
220 | bar = "" | |
221 | sep = "" | |
222 | for (j = 1; j <= i; j++) { | |
223 | bar = bar sep position[j] | |
224 | sep = " " | |
225 | } | |
226 | return bar | |
227 | } | |
365549a9 SK |
228 | |
229 | function make_status_mpd( state, status) { | |
230 | state = db["mpd_state"] | |
231 | ||
232 | if (state == "play") { | |
233 | status = make_status_mpd_state_known("▶") | |
234 | } else if (state == "pause") { | |
235 | status = make_status_mpd_state_known("❚❚") | |
236 | } else if (state == "stop") { | |
237 | status = make_status_mpd_state_known("⬛") | |
238 | } else { | |
239 | status = make_status_mpd_state_unknown("--") | |
240 | } | |
241 | ||
242 | return sprintf("[%s]", status) | |
243 | } | |
244 | ||
245 | function make_status_mpd_state_known(symbol) { | |
246 | return sprintf(\ | |
247 | "%s %s %s %s", | |
248 | symbol, | |
249 | db["mpd_curr_song_time"], | |
250 | db["mpd_curr_song_percent"], | |
251 | substr(db["mpd_curr_song_name"], 1, opt_mpd_song_max_chars)\ | |
252 | ) | |
253 | } | |
254 | ||
255 | function make_status_mpd_state_unknown(symbol) { | |
256 | return sprintf("%s", symbol) | |
257 | } | |
258 | ||
259 | function debug(location, msg) { | |
260 | if (opt_debug) { | |
261 | print_error(location, msg) | |
262 | } | |
263 | } | |
264 | ||
265 | function print_error(location, msg) { | |
266 | print(location " ==> " msg) > "/dev/stderr" | |
267 | } | |
438d0d5f SK |
268 | ' |
269 | } | |
270 | ||
6339a4f8 | 271 | produce_bar_req() { |
438d0d5f SK |
272 | echo '' |
273 | } | |
274 | ||
275 | spawn() { | |
276 | cmd="$1" | |
277 | pipe="$2" | |
365549a9 | 278 | msg_head="$3" |
438d0d5f SK |
279 | interval="$4" |
280 | while true; do | |
365549a9 | 281 | echo "${msg_head} $($cmd)" > "$pipe" |
438d0d5f SK |
282 | sleep "$interval" |
283 | done & | |
284 | } | |
285 | ||
286 | main() { | |
4d314e0f SK |
287 | # Defaults |
288 | dir_data="$HOME/.khatus" | |
289 | weather_station_id='KJFK' | |
bbb42518 | 290 | screen_brightness_device_name='acpi_video0' |
4d314e0f SK |
291 | |
292 | # User-overrides | |
293 | OPTS=$( | |
294 | getopt \ | |
295 | -o '' \ | |
bbb42518 | 296 | -l data-dir:,weather-station:screen-device: \ |
4d314e0f SK |
297 | -- "$@" |
298 | ) | |
299 | eval set -- "$OPTS" | |
300 | while true | |
301 | do | |
302 | case "$1" in | |
303 | --data-dir) | |
304 | dir_data="$2" | |
305 | shift 2 | |
306 | ;; | |
307 | --weather-station) | |
308 | weather_station_id="$2" | |
309 | shift 2 | |
310 | ;; | |
bbb42518 SK |
311 | --screen-device) |
312 | screen_brightness_device_name="$2" | |
313 | shift 2 | |
314 | ;; | |
4d314e0f SK |
315 | --) |
316 | shift | |
317 | break | |
318 | ;; | |
319 | esac | |
320 | done | |
321 | ||
0c0ebbe1 | 322 | pipe="$dir_data/khatus_data_pipe" |
bbb42518 SK |
323 | screen_brightness_device_path='/sys/class/backlight' |
324 | screen_brightness_device_path+="/$screen_brightness_device_name" | |
0c0ebbe1 | 325 | |
4d314e0f SK |
326 | ( echo "Khatus starting with the following parameters:" |
327 | ( echo " dir_data|= $dir_data" | |
0c0ebbe1 | 328 | echo " pipe|= $pipe" |
bbb42518 SK |
329 | echo " screen_brightness_device_name|=$screen_brightness_device_name" |
330 | echo " screen_brightness_device_path|=$screen_brightness_device_path" | |
4d314e0f SK |
331 | echo " weather_station_id|= $weather_station_id" |
332 | ) | column -ts\| | |
333 | echo '' | |
334 | ) >&2 | |
335 | ||
4d314e0f | 336 | mkdir -p "$dir_data" |
438d0d5f SK |
337 | rm -f "$pipe" |
338 | mkfifo "$pipe" | |
339 | ||
bbb42518 SK |
340 | cmd_produce_screen_brightness='produce_screen_brightness' |
341 | cmd_produce_screen_brightness+=" $screen_brightness_device_path" | |
0c0ebbe1 SK |
342 | cmd_produce_weather="produce_weather $weather_station_id" |
343 | ||
4d314e0f | 344 | # TODO: Redirect each worker's stderr to a dedicated log file |
0c0ebbe1 | 345 | spawn produce_datetime "$pipe" 'in:DATE_TIME' 1 |
bbb42518 | 346 | spawn "$cmd_produce_screen_brightness" "$pipe" 'in:SCREEN_BRIGHTNESS' 1 |
0c0ebbe1 SK |
347 | spawn "$cmd_produce_weather" "$pipe" 'in:WEATHER' $(( 30 * 60 )) |
348 | spawn produce_mpd_state "$pipe" 'in:MPD_STATE' 1 | |
349 | spawn produce_mpd_song "$pipe" 'in:MPD_SONG' 1 | |
350 | spawn produce_volume "$pipe" 'in:VOLUME' 1 | |
351 | spawn produce_bar_req "$pipe" 'out:BAR' 1 | |
352 | consume "$pipe" | |
438d0d5f SK |
353 | } |
354 | ||
355 | main $@ |