/[scripts]/trunk/dwm-status.pl
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Annotation of /trunk/dwm-status.pl

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Revision 80 - (hide annotations)
Tue Jul 22 01:15:19 2008 UTC (15 years, 8 months ago) by dpavlin
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File size: 4780 byte(s)
support sys fs's notion of battery

1 dpavlin 30 #!/usr/bin/perl -w
2    
3     # dwm-status.pl
4     #
5     # 05/26/07 23:08:31 CEST Dobrica Pavlinusic <dpavlin@rot13.org>
6    
7     use strict;
8     use POSIX qw/strftime/;
9     use File::Slurp;
10     use Time::HiRes;
11 dpavlin 59 use Data::Dump qw/dump/;
12 dpavlin 30
13     my $dt = 3;
14 dpavlin 31 my $acpi_every = 10;
15 dpavlin 30
16 dpavlin 35 my $disk_blk_size = 512;
17    
18 dpavlin 31 my $debug = shift @ARGV;
19 dpavlin 67 my $awesome = 1;
20 dpavlin 30
21     $|=1;
22    
23     sub proc2hash {
24     my $f = shift;
25 dpavlin 39 return unless -f $f;
26 dpavlin 30 open(my $fh, '<', $f) || die "can't open $f: $!";
27     my $h;
28     while(<$fh>) {
29     chomp;
30     my ( $key, $value ) = split(/:\s+/, $_, 2);
31     $value =~ s/ m[VW]h*$//;
32     $h->{$key} = $value;
33     }
34 dpavlin 38 warn "$f ",dump( $h ) if ( $debug );
35 dpavlin 30 return $h;
36     }
37    
38 dpavlin 39 my $proc_acpi_battery;
39     sub find_proc_acpi {
40     my ( $path, $check ) = @_;
41    
42     if ( -e "/proc/acpi/$path" ) {
43     opendir(my $items, "/proc/acpi/$path") || die "can't open /proc/acpi/$path: $!";
44     foreach my $item ( readdir( $items ) ) {
45     $check->( $item ) && last;
46     }
47     }
48     }
49    
50     my $proc_acpi_thermal_zone_temperature;
51     find_proc_acpi('thermal_zone', sub {
52     my $thm = shift;
53     return if ( ! -e "/proc/acpi/thermal_zone/$thm/temperature" );
54     warn "# using thermal zone $thm\n" if ( $debug );
55     $proc_acpi_thermal_zone_temperature = "/proc/acpi/thermal_zone/$thm/temperature";
56     });
57    
58     find_proc_acpi('battery', sub {
59     my $bat = shift;
60 dpavlin 56 return unless $bat =~ /\w+/;
61 dpavlin 39
62     warn "# testing battery $bat\n" if ( $debug );
63    
64     if ( proc2hash( "/proc/acpi/battery/$bat/info" )->{present} eq 'yes' ) {
65     $proc_acpi_battery = "/proc/acpi/battery/$bat";
66     warn "using $proc_acpi_battery to monitor battery\n";
67     }
68     });
69    
70 dpavlin 30 sub unit {
71     my $v = shift;
72 dpavlin 31
73     warn "unit( $v )\n" if ($debug);
74    
75 dpavlin 35 my @units = qw/b k M G/;
76 dpavlin 30 my $o = 0;
77    
78 dpavlin 40 while ( ( $v / 10000 ) >= 1 ) {
79 dpavlin 30 $o++;
80     $v /= 1024;
81     }
82    
83 dpavlin 31 if ( $v >= 1 ) {
84 dpavlin 34 return sprintf("%d%s", $v, $units[$o]);
85 dpavlin 33 } elsif ( $v == 0 ) {
86     return '';
87 dpavlin 31 } else {
88 dpavlin 34 return sprintf("%.1f%s", $v, $units[$o]);
89 dpavlin 31 }
90 dpavlin 30 }
91    
92     my ( $lrx, $ltx ) = ( 0, 0 );
93 dpavlin 35 my ( $ld_r, $ld_w ) = ( 0, 0 );
94 dpavlin 80 my $bat = '';
95 dpavlin 30
96     my $i = 0;
97 dpavlin 80 my $sys_fs = '/sys/class/power_supply/BAT0';
98 dpavlin 30
99 dpavlin 80 sub read_file {
100     my $path = shift;
101     open(my $fh, '<', $path) || die "can't open $path: $!";
102     my $c = <$fh>;
103     chomp($c);
104     close($fh);
105     return $c;
106     }
107 dpavlin 57
108 dpavlin 30 while ( 1 ) {
109     my $s = strftime("%Y-%m-%d %H:%M:%S", localtime());
110    
111 dpavlin 80 if ( $i % $acpi_every == 0 ) {
112     if ( $proc_acpi_battery ) {
113 dpavlin 30
114 dpavlin 80 my $state = proc2hash( "$proc_acpi_battery/state" );
115 dpavlin 30
116 dpavlin 80 if ( $state->{'present rate'} =~ m/^\d+$/ && $state->{'present rate'} != 0 ) {
117     my $info = proc2hash( "$proc_acpi_battery/info" );
118 dpavlin 30
119 dpavlin 80 my $pcnt = $state->{'remaining capacity'} / $info->{'design capacity'};
120 dpavlin 30
121 dpavlin 80 my $time = $state->{'remaining capacity'} / ( $state->{'present rate'} );
122     $time = ( $info->{'design capacity'} - $state->{'remaining capacity'} ) / $state->{'present rate'} if ( $state->{'charging state'} eq 'charging' );
123 dpavlin 31
124 dpavlin 80 warn "time = $time\n" if ($debug);
125 dpavlin 30
126 dpavlin 80 my $hh = int( $time );
127     my $mm = int( ( $time - $hh ) * 60 );
128     my $ss = ( $time * 3600 ) % 60;
129 dpavlin 30
130 dpavlin 80 $bat = sprintf("%s %2d%% %02d:%02d:%02d %3.1fW!| ",
131     substr($state->{'charging state'},0,1),
132     $pcnt * 100, $hh, $mm, $ss,
133     $state->{'present rate'} / 1000
134     );
135 dpavlin 32 }
136 dpavlin 80 } elsif ( -e $sys_fs ) {
137     my $full = read_file( "$sys_fs/charge_full" );
138     my $now = read_file( "$sys_fs/charge_now" );
139     $bat = sprintf("%2d%% | ", $now * 100 / $full );
140     }
141 dpavlin 30 } else {
142 dpavlin 32 $bat =~ s/!(\|\s)$/ $1/;
143 dpavlin 30 }
144     $i++;
145    
146     my $load = read_file('/proc/loadavg');
147     chomp( $load );
148     $load =~ s!\s\d+/\d+.*!!;
149    
150 dpavlin 39 my $temp = '';
151     if ( $proc_acpi_thermal_zone_temperature ) {
152     $temp = read_file( $proc_acpi_thermal_zone_temperature );
153     chomp( $temp );
154     $temp =~ s!^.*:\s+!!;
155     }
156 dpavlin 30
157     my $net = read_file('/proc/net/dev');
158     my ( $rx, $tx ) = ( 0,0 );
159    
160     foreach ( split(/\n/, $net) ) {
161     s/^\s+//;
162 dpavlin 37 s/:\s+/:/;
163 dpavlin 30 my @n = split(/\s+/, $_, 17);
164 dpavlin 36 next unless ( $n[0] =~ s!(eth\d|ath\d):!! );
165 dpavlin 30
166     warn dump( @n ) if ($debug);
167 dpavlin 36 $rx += $n[0];
168     $tx += $n[8];
169 dpavlin 30 }
170     warn "rx: $rx tx: $tx\n" if ($debug);
171    
172 dpavlin 35 my $net_rx = ( $rx - $lrx ) / $dt;
173     my $net_tx = ( $tx - $ltx ) / $dt;
174 dpavlin 30 ( $lrx, $ltx ) = ( $rx, $tx );
175    
176 dpavlin 35 my $disk = read_file('/proc/diskstats');
177     my ( $d_r, $d_w ) = ( 0,0 );
178 dpavlin 30
179 dpavlin 35 foreach ( split(/\n/, $disk) ) {
180     s/^\s+//;
181     my @d = split(/\s+/, $_, 17);
182     next unless ( $d[2] =~ m/^[sh]d\w$/ );
183    
184     warn dump( @d ) if ($debug);
185     $d_r += $d[5] * $disk_blk_size;
186     $d_w += $d[7] * $disk_blk_size;
187     }
188     warn "d_r: $d_r d_w: $d_w\n" if ($debug);
189    
190     my $d_read = ( $d_r - $ld_r ) / $dt;
191     my $d_write = ( $d_w - $ld_w ) / $dt;
192     ( $ld_r, $ld_w ) = ( $d_r, $d_w );
193    
194 dpavlin 57 my $out = sprintf("%s | %s |%5s D %-5s|%5s > %-5s| %s%s\n",
195 dpavlin 35 $s,
196     $load,
197     unit( $d_read ), unit( $d_write ),
198     unit( $net_rx ), unit( $net_tx ),
199     $bat, $temp,
200     );
201    
202 dpavlin 59 print $out;
203 dpavlin 67 if ( $awesome ) {
204     open(my $fh, '|-', 'awesome-client') || die "can't pipe to awesome-client: $!";
205 dpavlin 74 print $fh "0 widget_tell mystatusbar dwm-status text $out\n";
206 dpavlin 67 close($fh);
207     }
208 dpavlin 57
209 dpavlin 30 sleep $dt;
210     }
211    

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