commit a2b681dc720b76816cc1261385e40e1ca1e1b9f6
Author: Raymond Cole <rc@wolog.xyz>
Date: Thu, 24 Oct 2024 20:59:20 +0000
Initial commit
Diffstat:
| A | .gitignore | | | 2 | ++ |
| A | LICENSE | | | 674 | +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| A | Makefile | | | 18 | ++++++++++++++++++ |
| A | README | | | 137 | +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| A | fifolog.c | | | 121 | +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| A | infobar | | | 367 | +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| A | ticktack.c | | | 82 | +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| A | util.c | | | 56 | ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
| A | util.h | | | 19 | +++++++++++++++++++ |
9 files changed, 1476 insertions(+), 0 deletions(-)
diff --git a/.gitignore b/.gitignore
@@ -0,0 +1,2 @@
+fifolog
+ticktack
diff --git a/LICENSE b/LICENSE
@@ -0,0 +1,674 @@
+ GNU GENERAL PUBLIC LICENSE
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+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+ 16. Limitation of Liability.
+
+ IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+ 17. Interpretation of Sections 15 and 16.
+
+ If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+ END OF TERMS AND CONDITIONS
+
+ How to Apply These Terms to Your New Programs
+
+ If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+ To do so, attach the following notices to the program. It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+ <one line to give the program's name and a brief idea of what it does.>
+ Copyright (C) <year> <name of author>
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+ If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+ <program> Copyright (C) <year> <name of author>
+ This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+ This is free software, and you are welcome to redistribute it
+ under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License. Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+ You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+ The GNU General Public License does not permit incorporating your program
+into proprietary programs. If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library. If this is what you want to do, use the GNU Lesser General
+Public License instead of this License. But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.
diff --git a/Makefile b/Makefile
@@ -0,0 +1,18 @@
+BIN = /usr/local/bin
+
+all: fifolog ticktack infobar
+
+fifolog: fifolog.c util.c
+ c99 -Wall -pedantic -g -o$@ fifolog.c util.c
+
+ticktack: ticktack.c util.c
+ c99 -Wall -pedantic -g -o$@ ticktack.c util.c
+
+install: all
+ cp -f fifolog ticktack infobar $(BIN)
+
+uninstall:
+ rm -f $(BIN)/fifolog $(BIN)/ticktack $(BIN)/infobar
+
+clean:
+ rm -f fifolog ticktack
diff --git a/README b/README
@@ -0,0 +1,137 @@
+infobar - Unixy status monitor
+==============================
+infobar is an event-driven status monitor for Linux, fully customizable
+and extensible via shell scripting.
+
+
+Overview
+--------
+infobar, a shell script, is a status program
+created for [swm](<https://wolog.xyz/repos/swm). Unlike
+[slstatus](<https://tools.suckless.org/slstatus>) and the like that update
+all components every second or so, infobar blocks until new information
+comes in and selectively updates components. These are achieved with
+the help of two small dedicated utilities, fifolog and ticktack, which
+are explained later.
+
+Using infobar with swm, by default the following components are displayed,
+with most being clickable:
+
+- Network. An icon indicates either no internet connection or the type
+ and state of the connection; this is updated upon relevant netlink
+ messages. When clicked, it unfolds to include network traffic and,
+ if the connection is wireless, signal strength as well; these are
+ updated every second. Clicking the component again folds it.
+
+- Volume. There's an icon indicating whether the master device is
+ muted or not, followed by the real-time volume percentage, updated
+ upon relevant device events. Pointing the mouse to it, scrolling up
+ and down changes the volume and right clicking toggles muting.
+
+- Processor. By default the load average over the last minute (read from
+ /proc/loadavg) is displayed and updated every minute. When clicked,
+ it shows in addition CPU usage percentage and frequency, and also adds
+ a new component showing memory usage; these are updated every second.
+ Click either component to fold them.
+
+- Battery. This shows the battery percentage, which is updated every
+ minute, followed by possibly a lighting icon to indicate charging,
+ which is updated upon relevant ACPI events. This one doesn't respond
+ to the mouse.
+
+- Clock. Shows time with the precision of minutes, updated at the start
+ of every minute. Clicking it toggles whether seconds and other details
+ are shown.
+
+
+Installation
+------------
+Execute the following command, as root if necessary:
+
+ make install
+
+infobar, fifolog and ticktack are installed into /usr/local/bin by
+default.
+
+Requirements of running infobar:
+
+- the ip command for the network component.
+
+- aximer and alsactl for the volume component.
+
+- acpi_listen for the battery component.
+
+To make icons output by infobar rendered correctly, make sure [font
+awesome](https://fontawesome.com) version 5 or above is installed and
+that swm (or whatever that renders the status text) loads the font.
+You may as well change the script to avoid using that font.
+
+
+Customization
+-------------
+You can find a line in the infobar script like this:
+
+ setbar ' %n %v %p %b %c '
+
+Modify the string to customize the bar. See the comments there for help.
+
+You can further customize and extend infobar by changing the script.
+Sections below will give you an idea about how it operates.
+
+Tip for debugging: Run infobar on the command line.
+
+
+fifolog
+-------
+fifolog takes its arguments as paths to FIFOs. It polls the FIFOs,
+and every time some of them become ready for reading, it reads whole
+lines from each and output the lines to stdout, each prefixed with the
+basename of the source FIFO followed by a space. Besides paths of FIFOs,
+when given an "-" argument (the default argument when none is given)
+fifolog also polls from its standard input, and the prefix for lines
+read from there is "-" followed by a space.
+
+When the write end of one of the FIFOs is closed, fifolog outputs the
+base name of the FIFO prefixed by "!" followed by a space, and reopens
+the FIFO to continue polling. If the standard input is polled and its
+write end gets closed, fifolog exits.
+
+
+ticktack
+--------
+ticktack accepts options -s and -m. When given -s, ticktack outputs a
+line with the single letter "s" at the start of every second. When given
+-m, ticktack outputs a line with the single letter "m" at the start of
+every minute. If both are given, ticktack outputs "s" at the start of
+every second, except for the start of first second of every minute when
+it outputs "m". When given no option, ticktack blocks indefinitely.
+
+Internally, ticktack uses the time since the Epoch to determine when the
+start of next second or next minute is, with the latter being the next
+time the seconds since the Epoch become divisible by 60, which should
+be aligned with second zero of minutes as output by the date command.
+
+Once knowing the next time to output, ticktack uses clock_nanosleep with
+flag TIMER_ABSTIME to sleep till that absolute time. Have the program
+been written to sleep for, say, for a minute, then, once the system gets
+suspended in the middle of the sleep, after resumption the sleep will
+continue even when it might have been hours later. By sleeping to an
+absolute point of time, if the system gets suspended past the target
+time, the sleep will stop right after system resumption and ticktack
+will be able to immediately detect a prolonged sleep and output what it
+should have.
+
+
+The Script
+----------
+infobar creates a temporary directory (named /tmp/infobar.<pid>) and
+makes FIFOs there to listen to notifier commands, like `alsa monitor`
+that notifies about volume and muting change. fifolog is used for
+collecting input lines from the FIFOs and stdin and feeding them to the
+main loop in the script. ticktack functions as one notifier program.
+infobar always runs it with only necessary options, and would kill and
+rerun ticktack to ensure that.
+
+Other details remain to be learnt from the script. If you know shell
+scripting well the script probably explains itself more articulately
+than documentation could do.
diff --git a/fifolog.c b/fifolog.c
@@ -0,0 +1,121 @@
+/*
+ * Copyright (C) Raymond Cole <rc@wolog.xyz>
+ *
+ * Licensed under the GNU General Public License; either version 3 of
+ * the License, or (at your option) any later version. See the LICENSE
+ * file for details.
+ */
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <poll.h>
+#include <unistd.h>
+
+#include "util.h"
+
+static size_t
+getlines(char **linesptr, size_t *siz, int fd)
+{
+ char *lines = *linesptr;
+ size_t len = 0;
+ char buf[256];
+ ssize_t n;
+ struct pollfd fds[1];
+
+ while ((n = read(fd, buf, sizeof(buf))) != 0) {
+ if (n < 0) {
+ if (errno != EAGAIN)
+ die("read:");
+ } else {
+ if (len + n >= *siz && !(lines = realloc(lines, len + n + 1)))
+ die("realloc:");
+ memcpy(lines + len, buf, n);
+ lines[len += n] = '\0';
+ if (lines[len - 1] == '\n')
+ break;
+ }
+ fds->fd = fd;
+ fds->events = POLLIN;
+ while (poll(fds, 1, 1000) < 0)
+ ;
+ }
+ *linesptr = lines;
+ return len;
+}
+
+int
+main(int argc, char **argv)
+{
+ char **fns, **bns;
+ struct pollfd *fds;
+ int nfds;
+ char *p, *q;
+ int i, ready;
+ char *lines = NULL;
+ size_t siz = 0;
+
+ progname = argv[0];
+ nfds = argc > 1 ? argc - 1 : 1;
+ if (!(fns = malloc(nfds * sizeof(*fns)))
+ || !(bns = malloc(nfds * sizeof(*bns)))
+ || !(fds = malloc(nfds * sizeof(*fds))))
+ die("malloc:");
+ if (argc < 2)
+ fns[0] = "-";
+ else
+ for (i = 1; i < argc; ++i)
+ fns[i - 1] = argv[i];
+ for (i = 0; i < nfds; ++i) {
+ if (!strcmp(fns[i], "-")) {
+ fds[i].fd = 0;
+ if (fcntl(0, F_SETFL, O_NONBLOCK) < 0)
+ die("fcntl:");
+ bns[i] = fns[i];
+ } else {
+ if ((fds[i].fd = open(fns[i], O_RDONLY|O_NONBLOCK)) < 0)
+ die("open `%s':", fns[i]);
+ bns[i] = (p = strrchr(fns[i], '/')) ? p + 1 : fns[i];
+ }
+ fds[i].events = POLLIN;
+ }
+ setvbuf(stdout, NULL, _IOLBF, 0);
+ for (;;) {
+ if ((ready = poll(fds, nfds, -1)) < 0)
+ die("poll:");
+ for (i = 0; i < nfds; ++i) {
+ if (fds[i].revents & (POLLNVAL|POLLERR))
+ die("error on pipe `%s'", bns[i]);
+ if (fds[i].revents & POLLIN) {
+ if (getlines(&lines, &siz, fds[i].fd)) {
+ for (p = lines; (q = strchr(p, '\n')); p = q + 1) {
+ *q = '\0';
+ printf("%s %s\n", bns[i], p);
+ }
+ } else {
+ fds[i].revents |= POLLHUP;
+ }
+ }
+ if (fds[i].revents & POLLHUP) {
+ if (fds[i].fd == 0)
+ goto done;
+ close(fds[i].fd);
+ printf("! %s\n", bns[i]);
+ if ((fds[i].fd = open(fns[i], O_RDONLY|O_NONBLOCK)) < 0)
+ die("open `%s':", fns[i]);
+ }
+ if (ferror(stdout))
+ die("cannot write to stdout");
+ }
+ }
+done:
+ free(lines);
+ for (i = 0; i < nfds; ++i)
+ if (fds[i].fd > 0)
+ close(fds[i].fd);
+ free(fns);
+ free(bns);
+ free(fds);
+ return 0;
+}
diff --git a/infobar b/infobar
@@ -0,0 +1,367 @@
+#!/bin/sh
+
+# Copyright (C) Raymond Cole <rc@wolog.xyz>
+#
+# Licensed under GNU General Public License; either version 3 of the
+# License, or (at your option) any later version. See the LICENSE file
+# for details.
+
+#!/bin/sh
+
+cleanup() {
+ set -- $(cat "$tmpdir"/pid/* 2>/dev/null)
+ [ $# -eq 0 ] || kill "$@"
+ rm -rf "$tmpdir"
+}
+
+humanize() {
+ _n="$1"
+ _b="$2"
+ shift 2
+ for _u in "$@"; do
+ [ "$_n" -ge "$_b" ] || break
+ _n=$(( (_n + _b / 2) / _b ))
+ done
+ echo "$_n$_u"
+}
+
+runinformer() {
+ _f="$1"; shift
+ [ -p "$tmpdir/fifo/$_f" ] || mkfifo "$tmpdir/fifo/$_f" || exit
+ [ -e "$tmpdir/pid/$_f" ] && kill "$(cat "$tmpdir/pid/$_f")"
+ "$@" >"$tmpdir/fifo/$_f" &
+ echo "$!" >"$tmpdir/pid/$_f"
+}
+
+updatebat() {
+ set -- "$(cat /sys/class/power_supply/BAT0/capacity)" "$bat"
+ for bat in '20:' '40:' '60:' '80:' '100:'; do
+ [ "$1" -lt "${bat%:*}" ] && break
+ done
+ bat="${bat#*:} $1%"
+ if grep -xFq Charging /sys/class/power_supply/BAT0/status; then
+ bat="$bat "
+ fi
+ [ "$bat" != "$2" ]; return # return the result of the test
+}
+
+updateclk() {
+ case "$bar" in
+ *%C*) clk="$(date +'%a %b %d %T %Z %Y')" ;;
+ *) clk="$(date +'%a %b %d %H:%M')" ;;
+ esac
+ return 0
+}
+
+updatecpu() {
+ _o="$cpu"
+ set -- $(cat /proc/loadavg)
+ cpu=" $1"
+ case "$bar" in
+ *%P*)
+ set -- $(head -n 1 /proc/stat)
+ shift
+ _u=$(( $1 + $2 + $3 + $6 + $7 ))
+ _s=$(( _u + $4 + $5 ))
+ if [ -n "$cpuuse$cpusum" ]; then
+ cpu="$cpu $(( (_u - cpuuse) * 100 / (_s - cpusum) ))%"
+ fi
+ cpuuse="$_u"
+ cpusum="$_s"
+ if _f="$(cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq)"; then
+ _t="$(humanize "$(( _f * 10 ))" 1000 '' K M G)"
+ _f="${_t%[[:digit:]]*}"
+ _f="${_f:-0}.${_t#$_f}"
+ cpu="$cpu ${_f}Hz"
+ fi
+ ;;
+ esac
+ [ "$cpu" != "$_o" ]; return
+}
+
+updatemem() {
+ set -- $(free | sed -n '2{p;q}')
+ shift
+ _o="$mem"
+ _x="$(humanize "$(( $1 * 10 ))" 1024 Ki Mi Gi)"
+ _t="${_x%[[:digit:]]*}"
+ _t="${_t:-0}.${_x#$_t}B"
+ _x="$(humanize "$(( $2 * 10 ))" 1024 Ki Mi Gi)"
+ _u="${_x%[[:digit:]]*}"
+ _u="${_u:-0}.${_x#$_u}B"
+ mem=" ${_u}/${_t}"
+ [ "$mem" != "$_o" ]; return
+}
+
+updatenet() {
+ set -- "$net" $(ip route | sed -n 's/^default\( via \([^ ]*\)\)* dev \([^ ]*\).*/\3 \2/p;q')
+ if [ $# -ge 2 ] && grep -xFq up "/sys/class/net/$2/operstate"; then
+ case "$2" in
+ en*|eth*) net='' ;;
+ wl*) net='' ;;
+ ww*) net='' ;;
+ *) net="$2" ;;
+ esac
+ [ -n "$3" ] || net="$net "
+ case "$bar" in
+ *%N*)
+ case "$2" in
+ wl*)
+ _x="$(sed -n "s/^$2:"' *[^ ]* *[^ ]* *\([^.]*\).*/\1/p' /proc/net/wireless)"
+ net="$net ${_x}dBm"
+ ;;
+ esac
+ _x="$(cat "/sys/class/net/$2/statistics/rx_bytes")"
+ [ -z "$netrx" ] || net="$net $(humanize $(( _x - netrx )) 1024 B KiB MiB)"
+ netrx="$_x"
+ _x="$(cat "/sys/class/net/$2/statistics/tx_bytes")"
+ [ -z "$nettx" ] || net="$net $(humanize $(( _x - nettx )) 1024 B KiB MiB)"
+ nettx="$_x"
+ ;;
+ esac
+ else
+ case "$bar" in
+ *%N*) changebar %N %n ;;
+ esac
+ net=''
+ fi
+ [ "$net" != "$1" ]; return
+}
+
+updatevol() {
+ set -- $(amixer sget Master | sed -n 's/^.*\[\([0-9]\+\)%\].*\[\(on\|off\)\]/\1 \2/p;tL;d;:L;q')
+ if [ "$2" = on ]; then
+ for vol in '0:' '30:' '100:'; do
+ [ "$1" -le "${vol%:*}" ] && break
+ done
+ vol="${vol#*:} $1%"
+ else
+ vol=" $1%"
+ fi
+ return 0
+}
+
+setbar() {
+ bar="$1"
+ modules=
+ _o=
+ _s="$IFS"
+ IFS=' %'
+ for _x in $bar; do
+ modules="$_x $modules"
+ case "$_x" in
+ [[:upper:]]) _o="s${_o#s}" ;;
+ [bc]) _o="${_o%m}m" ;;
+ esac
+ done
+ IFS="$_s"
+ if [ "$ttopts" != "$_o" ]; then
+ runinformer t ticktack ${_o:+-$_o}
+ ttopts="$_o"
+ fi
+}
+
+changebar() {
+ setbar "${bar%%"$1"*}$2${bar#*"$1"}"
+}
+
+putbar() {
+ _s="$IFS"
+ IFS=%
+ for _x in $bar; do
+ _t="${_x%% *}"
+ case "${_t#%}" in
+ b) _t="$bat" ;;
+ [Cc]) _t="$clk" ;;
+ M) _t="$mem" ;;
+ [Nn]) _t="$net" ;;
+ [Pp]) _t="$cpu" ;;
+ v) _t="$vol" ;;
+ esac
+ printf '%s' "$_t${_x##*[! ]}"
+ done
+ IFS="$_s"
+ echo
+}
+
+tmpdir="/tmp/infobar.$$"
+ttopts=
+bat=
+clk=
+cpu=
+cpuuse=
+cpusum=
+mem=
+net=
+netrx=
+nettx=
+vol=
+
+trap cleanup INT TERM EXIT
+mkdir "$tmpdir" && mkdir "$tmpdir/fifo" && mkdir "$tmpdir/pid" || exit
+
+# Some available modules:
+#
+# + %n - network connection (depends on the ip command)
+# + %v - volume and mutedness (depends on alsactl)
+# + %p - processor load over the last minute
+# + %b - battery percentage and charging state (depends on acpi_listen)
+# + %c - clock with the precision of minutes
+#
+# Among them %n and %v are updated upon relevant output of `ip monitor
+# route` and `alsactl monitor`, respectively. %p, %b and %c are updated
+# upon every minute. %b is in addition updated upon relevant output of
+# `acpi_listen`.
+#
+# The other modules have uppercase names and are updated every second:
+#
+# + %N - like %n but also shows signal strength (if wireless) and network traffic
+# + %P - like %p but also shows CPU usage and frequency
+# + %C - like %c but more detailed and shows seconds
+# + %M - memory usage
+#
+# Generally, the modules should be used in a specific format: Modules
+# should be separated by two or more spaces and nothing else. No module
+# should appear more than once, and a lowercase module and its uppercase
+# counterpart shouldn't both be used. The freedom lies mainly in deciding
+# which modules are included and in what order.
+
+setbar ' %n %v %p %b %c '
+
+# remove the %b module if there is no BAT0 (e.g. on desktop computer)
+[ -r /sys/class/power_supply/BAT0/capacity ] || changebar ' %b ' ''
+
+for x in $modules; do
+ case "$x" in
+ b)
+ runinformer a acpi_listen
+ updatebat
+ ;;
+ [Cc])
+ updateclk
+ ;;
+ M)
+ updatemem
+ ;;
+ [Nn])
+ runinformer n ip monitor route
+ updatenet
+ ;;
+ [Pp])
+ updatecpu
+ ;;
+ v)
+ runinformer v alsactl monitor
+ updatevol
+ ;;
+ esac
+done
+
+putbar
+
+fifolog - "$tmpdir"/fifo/* | while read -r src tok toks; do
+ case "$src" in
+ -)
+ for x in $modules; do
+ [ "$tok" -gt 1 ] || break
+ tok=$(( tok - 1 ))
+ done
+ butt="${toks%% *}"
+ case "$x" in
+ [Cc])
+ if [ "$butt" -eq 1 ]; then
+ if [ "$x" = c ]; then
+ changebar %c %C
+ else
+ changebar %C %c
+ fi
+ updateclk && putbar
+ fi
+ ;;
+ [MPp])
+ if [ "$butt" -eq 1 ]; then
+ case "$bar" in
+ *'%P %M'*)
+ changebar '%P %M' %p
+ cpuuse=
+ cpusum=
+ updatecpu
+ putbar
+ ;;
+ *%p*)
+ changebar %p '%P %M'
+ updatecpu
+ updatemem
+ putbar
+ ;;
+ esac
+ fi
+ ;;
+ N)
+ if [ "$butt" -eq 1 ]; then
+ changebar %N %n
+ netrx=
+ nettx=
+ updatenet && putbar
+ fi
+ ;;
+ n)
+ if [ "$butt" -eq 1 ]; then
+ changebar %n %N
+ updatenet && putbar
+ fi
+ ;;
+ v)
+ if [ "$butt" -eq 3 ]; then
+ amixer -q set Master toggle
+ updatevol && putbar
+ elif [ "$butt" -eq 4 ]; then
+ amixer -q set Master 5%+
+ updatevol && putbar
+ elif [ "$butt" -eq 5 ]; then
+ amixer -q set Master 5%-
+ updatevol && putbar
+ fi
+ ;;
+ esac
+ ;;
+ a)
+ case "$bar" in
+ *%b*)
+ [ "$tok" = ac_adapter ] && updatebat && putbar
+ ;;
+ esac
+ ;;
+ [Nn])
+ case "$tok" in
+ Deleted|default)
+ updatenet && putbar
+ ;;
+ esac
+ ;;
+ t)
+ x="$tok$bar"
+ case "$x" in
+ [sm]*%b*) updatebat && putbar ;
+ esac
+ case "$x" in
+ m*%c*|[sm]*%C*) updateclk && putbar ;;
+ esac
+ case "$x" in
+ [sm]*%M*) updatemem && putbar ;;
+ esac
+ case "$x" in
+ [sm]*%N*) updatenet && putbar ;;
+ esac
+ case "$x" in
+ [sm]*%[Pp]*) updatecpu && putbar ;;
+ esac
+ ;;
+ v)
+ updatevol && putbar
+ ;;
+ !)
+ [ "$tok" == t ] || exit 1
+ ;;
+ esac
+done
diff --git a/ticktack.c b/ticktack.c
@@ -0,0 +1,82 @@
+/*
+ * Copyright (C) Raymond Cole <rc@wolog.xyz>
+ *
+ * Licensed under the GNU General Public License; either version 3 of
+ * the License, or (at your option) any later version. See the LICENSE
+ * file for details.
+ */
+#define _POSIX_C_SOURCE 200112L
+#include <errno.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+#include <sys/wait.h>
+
+#include "util.h"
+
+enum { TTS = 1, TTM = 2 };
+
+static volatile sig_atomic_t tt, sentterm;
+static struct timespec request, now;
+
+static void
+updatereq(int t)
+{
+ if (t & TTS)
+ request.tv_sec = now.tv_sec + 1;
+ else if (t & TTM)
+ request.tv_sec = now.tv_sec - now.tv_sec % 60 + 60;
+}
+
+int
+main(int argc, char **argv)
+{
+ time_t osec;
+ int c;
+
+ progname = argv[0];
+ while ((c = getopt(argc, argv, "smh")) != -1) {
+ switch (c) {
+ case 's': tt |= TTS; break;
+ case 'm': tt |= TTM; break;
+ default: exit(1);
+ }
+ }
+ if (optind < argc) {
+ fputs("Too many arguments\n", stderr);
+ exit(1);
+ }
+ if (!tt)
+ for (;;)
+ pause();
+ if (clock_gettime(CLOCK_REALTIME, &now) == -1)
+ die("clock_gettime:");
+ updatereq(tt);
+ osec = now.tv_sec;
+ for (;;) {
+ c = '\0';
+ if ((tt & TTM) && now.tv_sec - now.tv_sec % 60 > osec) {
+ c = 'm';
+ updatereq(tt);
+ } else if ((tt & TTS) && now.tv_sec > osec) {
+ c = 's';
+ updatereq(TTS);
+ }
+ if (c && write(1, (char []){ c, '\n' }, 2) < 0)
+ die("write:");
+ osec = now.tv_sec;
+ switch (clock_nanosleep(CLOCK_REALTIME, TIMER_ABSTIME, &request, NULL)) {
+ case 0:
+ case EINTR:
+ break;
+ default:
+ die("clock_nanosleep:");
+ }
+ if (clock_gettime(CLOCK_REALTIME, &now) == -1)
+ die("clock_gettime:");
+ }
+ return 0;
+}
diff --git a/util.c b/util.c
@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) Raymond Cole <rc@wolog.xyz>
+ *
+ * Licensed under the GNU General Public License; either version 3 of
+ * the License, or (at your option) any later version. See the LICENSE
+ * file for details.
+ */
+#include <errno.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "util.h"
+
+const char *progname;
+
+void
+vwarn(const char *fmt, va_list ap)
+{
+ int e = 0;
+ char c = '\0';
+
+ if (fmt[0]) {
+ c = fmt[strlen(fmt) - 1];
+ if (c == ':')
+ e = errno;
+ }
+ if (progname)
+ fprintf(stderr, "%s: ", progname);
+ vfprintf(stderr, fmt, ap);
+ if (c == ':')
+ fprintf(stderr, " %s", strerror(e));
+ fputc('\n', stderr);
+}
+
+void
+warn(const char *fmt, ...)
+{
+ va_list ap;
+
+ va_start(ap, fmt);
+ vwarn(fmt, ap);
+ va_end(ap);
+}
+
+void
+die(const char *fmt, ...)
+{
+ va_list ap;
+
+ va_start(ap, fmt);
+ vwarn(fmt, ap);
+ va_end(ap);
+ exit(1);
+}
diff --git a/util.h b/util.h
@@ -0,0 +1,19 @@
+/*
+ * Copyright (C) Raymond Cole <rc@wolog.xyz>
+ *
+ * Licensed under the GNU General Public License; either version 3 of
+ * the License, or (at your option) any later version. See the LICENSE
+ * file for details.
+ */
+
+#define MAX(A, B) ((A) > (B) ? (A) : (B))
+#define MIN(A, B) ((A) < (B) ? (A) : (B))
+#define BETWEEN(X, A, B) ((A) <= (X) && (X) <= (B))
+
+#ifdef va_arg
+void vwarn(const char *fmt, va_list ap);
+#endif
+void warn(const char *fmt, ...);
+void die(const char *fmt, ...);
+
+extern const char *progname;
