fhem-mirror/FHEM/33_readingsHistory.pm

828 lines
23 KiB
Perl

# $Id$
##############################################################################
#
# This file is part of fhem.
#
# Fhem 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 2 of the License, or
# (at your option) any later version.
#
# Fhem 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 fhem. If not, see <http://www.gnu.org/licenses/>.
#
##############################################################################
package main;
use strict;
use warnings;
use POSIX qw(strftime);
use vars qw(%defs);
use vars qw(%attr);
sub Log($$);
sub Log3($$$);
use vars qw($FW_ME);
use vars qw($FW_wname);
use vars qw($FW_subdir);
use vars qw(%FW_hiddenroom);
use vars qw(%FW_visibleDeviceHash);
use vars qw(%FW_webArgs); # all arguments specified in the GET
my $readingsHistory_hasJSON = 0;
my $readingsHistory_hasDataDumper = 1;
sub readingsHistory_Initialize($)
{
my ($hash) = @_;
$hash->{DefFn} = "readingsHistory_Define";
$hash->{NotifyFn} = "readingsHistory_Notify";
$hash->{NotifyOrderPrefix}= "51-";
$hash->{UndefFn} = "readingsHistory_Undefine";
$hash->{SetFn} = "readingsHistory_Set";
$hash->{GetFn} = "readingsHistory_Get";
$hash->{AttrFn} = "readingsHistory_Attr";
$hash->{AttrList} = "disable:1,2,3 mapping style timestampFormat valueFormat noheading:1 nohtml:1 nolinks:1 notime:1 nostate:1 alwaysTrigger:1 rows";
$hash->{FW_detailFn} = "readingsHistory_detailFn";
$hash->{FW_summaryFn} = "readingsHistory_detailFn";
$data{FWEXT}{"readingsHistory"}{SCRIPT} = "fhemweb_readingsHistory.js";
$hash->{FW_atPageEnd} = 1;
eval "use Data::Dumper";
$readingsHistory_hasDataDumper = 0 if($@);
}
sub
readingsHistory_updateDevices($)
{
my ($hash) = @_;
my %list;
my @devices;
my $def = $hash->{DEF};
$def = "" if( !$def );
my @params = split(" ", $def);
while (@params) {
my $param = shift(@params);
my @device = split(":", $param);
if($device[0] =~ m/(.*)=(.*)/) {
my ($lattr,$re) = ($1, $2);
foreach my $d (sort keys %defs) {
next if( IsIgnored($d) );
next if( !defined($defs{$d}{$lattr}) );
next if( $defs{$d}{$lattr} !~ m/^$re$/);
$list{$d} = 1;
push @devices, [$d,$device[1]];
}
} elsif($device[0] =~ m/(.*)&(.*)/) {
my ($lattr,$re) = ($1, $2);
foreach my $d (sort keys %attr) {
next if( IsIgnored($d) );
next if( !defined($attr{$d}{$lattr}) );
next if( $attr{$d}{$lattr} !~ m/^$re$/);
$list{$d} = 1;
push @devices, [$d,$device[1]];
}
} elsif( defined($defs{$device[0]}) ) {
$list{$device[0]} = 1;
push @devices, [@device];
} else {
foreach my $d (sort keys %defs) {
next if( IsIgnored($d) );
eval { $d =~ m/^$device[0]$/ };
if( $@ ) {
Log3 $hash->{NAME}, 3, $hash->{NAME} .": ". $device[0] .": ". $@;
push @devices, ["<<ERROR>>"];
last;
}
next if( $d !~ m/^$device[0]$/);
$list{$d} = 1;
push @devices, [$d,$device[1]];
}
}
}
$hash->{CONTENT} = \%list;
$hash->{DEVICES} = \@devices;
delete( $hash->{NOTIFYDEV} );
if( scalar keys %list == 0 ) {
$hash->{NOTIFYDEV} = "global";
}
$hash->{fhem}->{last_update} = gettimeofday();
}
sub
readingsHistory_Define($$)
{
my ($hash, $def) = @_;
my @args = split("[ \t]+", $def);
return "Usage: define <name> readingsHistory [<device>[:<readings>]]+" if(@args < 2);
my $name = shift(@args);
my $type = shift(@args);
$hash->{HAS_DataDumper} = $readingsHistory_hasDataDumper;
$hash->{fhem}{history} = [] if( !defined($hash->{fhem}{history}) );
readingsHistory_updateDevices($hash);
$hash->{STATE} = 'Initialized';
return undef;
}
sub
readingsHistory_lookup($$$$$$$$)
{
my($mapping,$name,$alias,$reading,$value,$room,$group,$default) = @_;
if( $mapping ) {
if( !ref($mapping) && $mapping =~ m/^{.*}$/) {
my $DEVICE = $name;
my $READING = $reading;
my $VALUE = $value;
my $m = eval $mapping;
if( $@ ) {
Log 2, $@ if( $@ );
} else {
$mapping = $m;
}
}
if( ref($mapping) eq 'HASH' ) {
$default = $mapping->{$name} if( defined($mapping->{$name}) );
$default = $mapping->{$reading} if( defined($mapping->{$reading}) );
$default = $mapping->{$name.".".$reading} if( defined($mapping->{$name.".".$reading}) );
$default = $mapping->{$reading.".".$value} if( defined($mapping->{$reading.".".$value}) );
} else {
$default = $mapping;
}
if( !ref($default) && $default =~ m/^{.*}$/) {
my $DEVICE = $name;
my $READING = $reading;
my $VALUE = $value;
$default = eval $default;
$default = "" if( $@ );
Log 2, $@ if( $@ );
}
return $default if( !defined($default) );
$default =~ s/\%ALIAS/$alias/g;
$default =~ s/\%DEVICE/$name/g;
$default =~ s/\%READING/$reading/g;
$default =~ s/\%VALUE/$value/g;
$default =~ s/\%ROOM/$room/g;
$default =~ s/\%GROUP/$group/g;
$default =~ s/\$ALIAS/$alias/g;
$default =~ s/\$DEVICE/$name/g;
$default =~ s/\$READING/$reading/g;
$default =~ s/\$VALUE/$value/g;
$default =~ s/\$ROOM/$room/g;
$default =~ s/\$GROUP/$group/g;
}
return $default;
}
sub
readingsHistory_lookup2($$$$)
{
my($lookup,$name,$reading,$value) = @_;
return $lookup if( !$lookup );
if( !ref($lookup) && $lookup =~ m/^{.*}$/) {
my $DEVICE = $name;
my $READING = $reading;
my $VALUE = $value;
my $l = eval $lookup;
if( $@ ) {
Log 2, $@ if( $@ );
} else {
$lookup = $l;
}
}
if( ref($lookup) eq 'HASH' ) {
my $vf = "";
$vf = $lookup->{$reading} if( defined($reading) && exists($lookup->{$reading}) );
$vf = $lookup->{$name.".".$reading} if( defined($reading) && exists($lookup->{$name.".".$reading}) );
$vf = $lookup->{$reading.".".$value} if( defined($value) && exists($lookup->{$reading.".".$value}) );
$lookup = $vf;
}
return $lookup if( !defined($lookup) );
if( !ref($lookup) && $lookup =~ m/^{.*}$/) {
my $DEVICE = $name;
my $READING = $reading;
my $VALUE = $value;
$lookup = eval $lookup;
$lookup = "" if( $@ );
Log 2, $@ if( $@ );
}
return $lookup if( !defined($lookup) );
$lookup =~ s/\%DEVICE/$name/g;
$lookup =~ s/\%READING/$reading/g;
$lookup =~ s/\%VALUE/$value/g;
$lookup =~ s/\$DEVICE/$name/g;
$lookup =~ s/\$READING/$reading/g;
$lookup =~ s/\$VALUE/$value/g;
return $lookup;
}
sub readingsHistory_Undefine($$)
{
my ($hash,$arg) = @_;
return undef;
}
sub
readingsHistory_2html($)
{
my($hash) = @_;
$hash = $defs{$hash} if( ref($hash) ne 'HASH' );
return undef if( !$hash );
if( $hash->{DEF} && $hash->{DEF} =~ m/=/ ) {
if( !$hash->{fhem}->{last_update}
|| gettimeofday() - $hash->{fhem}->{last_update} > 600 ) {
readingsHistory_updateDevices($hash);
}
}
my $d = $hash->{NAME};
my $show_heading = !AttrVal( $d, "noheading", "0" );
my $show_links = !AttrVal( $d, "nolinks", "0" );
$show_links = 0 if($FW_hiddenroom{detail});
my $disable = AttrVal($d,"disable", 0);
if( AttrVal($d,"disable", 0) > 2 ) {
return undef;
} elsif( AttrVal($d,"disable", 0) > 1 ) {
my $ret;
$ret .= "<table>";
my $txt = AttrVal($d, "alias", $d);
$txt = "<a href=\"$FW_ME$FW_subdir?detail=$d\">$txt</a>" if( $show_links );
$ret .= "<tr><td><div class=\"devType\">$txt</a></div></td></tr>" if( $show_heading );
$ret .= "<tr><td><table class=\"block wide\">";
#$ret .= "<div class=\"devType\"><a style=\"color:#ff8888\" href=\"$FW_ME$FW_subdir?detail=$d\">readingsHistory $txt is disabled.</a></div>";
$ret .= "<td><div style=\"color:#ff8888;text-align:center\">disabled</div></td>";
$ret .= "</table></td></tr>";
$ret .= "</table>";
return $ret;
}
my $show_time = !AttrVal( $d, "notime", "0" );
my $style = AttrVal( $d, "style", "" );
my $devices = $hash->{DEVICES};
my $row = 1;
my $ret;
$ret .= "<table>";
my $txt = AttrVal($d, "alias", $d);
$txt = "<a href=\"$FW_ME$FW_subdir?detail=$d\">$txt</a>" if( $show_links );
$ret .= "<tr><td><div class=\"devType\">$txt</a></div></td></tr>" if( $show_heading );
$ret .= "<tr><td><table $style class=\"block wide\">";
$ret .= "<tr><td colspan=\"99\"><div style=\"color:#ff8888;text-align:center\">updates disabled</div></tr>" if( $disable > 0 );
my $rows = AttrVal($d,"rows", 5 );
$rows = 1 if( $rows < 1 );
my $lines = "";
for (my $i = 0; $i < $rows; $i++) {
my $line = $hash->{fhem}{history}[$i];
if( ref($line) eq 'ARRAY' ) {
$lines .= $line->[3] if( $line );
} else {
$lines .= $line if( $line );
}
$lines .= "<br>";
}
$ret .= sprintf("<tr class=\"%s\">", ($row&1)?"odd":"even");
$row++;
$ret .= "<td><div id=\"$d-history\" rows=\"$rows\">$lines</div></td>";
$ret .= sprintf("<tr class=\"%s\">", ($row&1)?"odd":"even");
$ret .= "<td colspan=\"99\"><div style=\"color:#ff8888;text-align:center\">updates disabled</div></td></tr>" if( $disable > 0 );
$ret .= "</table></td></tr>";
$ret .= "</table>";
return $ret;
}
sub
readingsHistory_detailFn()
{
my ($FW_wname, $d, $room, $pageHash) = @_; # pageHash is set for summaryFn.
my $hash = $defs{$d};
$hash->{mayBeVisible} = 1;
return readingsHistory_2html($d);
}
# In newer perl versions (>=5.22) POSIX::strftime() returns special chars in ISO-8859 instead of active locale (see: https://forum.fhem.de/index.php/topic,85132.msg777667.html#msg777667 )
sub readingsHistory_strftime(@)
{
my $string = POSIX::strftime(@_);
$string =~ s/\xe4/ä/g;
$string =~ s/\xc4/Ä/g;
$string =~ s/\xf6/ö/g;
$string =~ s/\xd6/Ö/g;
$string =~ s/\xfc/ü/g;
$string =~ s/\xdc/Ü/g;
$string =~ s/\xdf/ß/g;
$string =~ s/\xdf/ß/g;
$string =~ s/\xe1/á/g;
$string =~ s/\xe9/é/g;
$string =~ s/\xc1/Á/g;
$string =~ s/\xc9/É/g;
return $string;
}
sub
readingsHistory_makeTimestamp($$) {
my ($t, $timestampFormat) = @_;
my @lt = localtime($t);
return readingsHistory_strftime( $timestampFormat, @lt ) if( $timestampFormat );
return sprintf("%02d:%02d:%02d", $lt[2], $lt[1], $lt[0] );
}
sub
readingsHistory_Notify($$)
{
my ($hash,$dev) = @_;
my $name = $hash->{NAME};
if( grep(m/^INITIALIZED$/, @{$dev->{CHANGED}}) ) {
readingsHistory_updateDevices($hash);
readingsHistory_Load($hash);
return undef;
} elsif( grep(m/^REREADCFG$/, @{$dev->{CHANGED}}) ) {
readingsHistory_updateDevices($hash);
readingsHistory_Load($hash);
return undef;
} elsif( grep(m/^SAVE$/, @{$dev->{CHANGED}}) ) {
readingsHistory_Save();
}
return if( AttrVal($name,"disable", 0) > 0 );
return if($dev->{TYPE} eq $hash->{TYPE});
#return if($dev->{NAME} eq $name);
my $devices = $hash->{DEVICES};
my $max = int(@{$dev->{CHANGED}});
for (my $i = 0; $i < $max; $i++) {
my $s = $dev->{CHANGED}[$i];
$s = "" if(!defined($s));
if( $dev->{NAME} eq "global" && $s =~ m/^RENAMED ([^ ]*) ([^ ]*)$/) {
my ($old, $new) = ($1, $2);
if( defined($hash->{CONTENT}{$old}) ) {
$hash->{DEF} =~ s/(^|\s+)$old((:\S+)?\s*)/$1$new$2/g;
}
readingsHistory_updateDevices($hash);
} elsif( $dev->{NAME} eq "global" && $s =~ m/^DELETED ([^ ]*)$/) {
my ($name) = ($1);
if( defined($hash->{CONTENT}{$name}) ) {
$hash->{DEF} =~ s/(^|\s+)$name((:\S+)?\s*)/ /g;
$hash->{DEF} =~ s/^ //;
$hash->{DEF} =~ s/ $//;
}
readingsHistory_updateDevices($hash);
} elsif( $dev->{NAME} eq "global" && $s =~ m/^DEFINED ([^ ]*)$/) {
readingsHistory_updateDevices($hash);
} else {
next if(AttrVal($name,"disable", undef));
next if (!$hash->{CONTENT}->{$dev->{NAME}});
if( $hash->{alwaysTrigger} ) {
$hash->{mayBeVisible} = 1;
} elsif( !defined($hash->{mayBeVisible}) ) {
Log3 $name, 5, "$name: not on any display, don't trigger";
} else {
if( defined($FW_visibleDeviceHash{$name}) ) {
} else {
Log3 $name, 5, "$name: no longer visible, don't trigger";
delete( $hash->{mayBeVisible} );
}
}
my ($reading,$value) = split(": ", $s, 2);
$reading = "" if( !defined($reading) );
next if( $reading =~ m/^\./);
$value = "" if( !defined($value) );
my $show_state = 1;
if( $value eq "" ) {
next if AttrVal( $name, "nostate", "0" );
$reading = "state";
$value = $s;
}
my $no_html = AttrVal( $name, "nohtml", "0" );
my $spacing = "&nbsp;&nbsp;";
$spacing = " " if $no_html;
my $mapping = AttrVal( $name, "mapping", "");
$mapping = eval $mapping if( $mapping =~ m/^{.*}$/ );
#$mapping = undef if( ref($mapping) ne 'HASH' );
my $timestampFormat = AttrVal( $name, "timestampFormat", undef);
my $value_format = AttrVal( $name, "valueFormat", "" );
if( $value_format =~ m/^{.*}$/ ) {
my $vf = eval $value_format;
$value_format = $vf if( $vf );
}
foreach my $device (@{$devices}) {
my $item = 0;
my $h = $defs{@{$device}[0]};
next if( !$h );
next if( $dev->{NAME} ne $h->{NAME} );
my $n = $h->{NAME};
my $regex = @{$device}[1];
my @list = (undef);
@list = split(",",$regex) if( $regex );
foreach my $regex (@list) {
next if( $reading eq "state" && !$show_state && (!defined($regex) || $regex ne "state") );
next if( defined($regex) && $reading !~ m/^$regex$/);
my $msg = $s;
my $value_format = readingsHistory_lookup2($value_format,$n,$reading,$value);
next if( !defined($value_format) );
if( $value_format =~ m/%/ ) {
$msg = sprintf( $value_format, $value );
} elsif( $value_format ) {
$msg = $value_format;
}
my $t = time;
my $tm = readingsHistory_makeTimestamp( $t, $timestampFormat );
my $show_links = !AttrVal( $name, "nolinks", "0" );
$show_links = 0 if($FW_hiddenroom{detail});
$show_links = 0 if(!defined($FW_ME));
$show_links = 0 if($no_html);
my $a = AttrVal($n, "alias", $n);
my $m = $a;
if( $mapping ) {
my $room = AttrVal($n, "room", "");
my $group = AttrVal($n, "group", "");
$m = readingsHistory_lookup($mapping,$n,$a,$reading,$value,$room,$group,$m);
}
if( $show_links ) {
$msg = "$tm$spacing<a href=\"$FW_ME$FW_subdir?detail=$n\">$m</a> $msg";
} else {
$msg = "$tm$spacing$m $msg";
}
my $entry = [$t, $n, $s,$msg];
#my $entry = [$t, $n, "$reading: $value", $msg];
while( @{$hash->{fhem}{history}} >= AttrVal($name,"rows", 5 ) ) {
pop @{$hash->{fhem}{history}};
}
unshift( @{$hash->{fhem}{history}}, $entry );
DoTrigger( "$name", "history: <html>$msg</html>" ) if( $hash->{mayBeVisible} );
}
}
}
}
return undef;
}
sub
readingsHistory_StatefileName()
{
my $statefile = $attr{global}{statefile};
$statefile = substr $statefile,0,rindex($statefile,'/')+1;
#return $statefile ."readingsHistorys.save" if( $readingsHistory_hasJSON );
return $statefile ."readingsHistorys.dd.save" if( $readingsHistory_hasDataDumper );
}
my $readingsHistory_LastSaveTime="";
sub
readingsHistory_Save()
{
my $time_now = TimeNow();
return if( $time_now eq $readingsHistory_LastSaveTime);
$readingsHistory_LastSaveTime = $time_now;
return "No statefile specified" if(!$attr{global}{statefile});
my $statefile = readingsHistory_StatefileName();
my $hash;
for my $d (keys %defs) {
next if($defs{$d}{TYPE} ne "readingsHistory");
next if( !defined($defs{$d}{fhem}{history}) );
$hash->{$d} = $defs{$d}{fhem}{history};
}
if(open(FH, ">$statefile")) {
my $t = localtime;
print FH "#$t\n";
if( $readingsHistory_hasJSON ) {
print FH encode_json($hash) if( defined($hash) );
} elsif( $readingsHistory_hasDataDumper ) {
my $dumper = Data::Dumper->new([]);
$dumper->Terse(1);
$dumper->Values([$hash]);
print FH $dumper->Dump;
}
close(FH);
} else {
my $msg = "readingsHistory_Save: Cannot open $statefile: $!";
Log3 undef, 1, $msg;
}
return undef;
}
sub
readingsHistory_Load($)
{
my ($hash) = @_;
return "No statefile specified" if(!$attr{global}{statefile});
my $statefile = readingsHistory_StatefileName();
if(open(FH, "<$statefile")) {
my $encoded;
while (my $line = <FH>) {
chomp $line;
next if($line =~ m/^#.*$/);
$encoded .= $line;
}
close(FH);
return if( !defined($encoded) );
my $decoded;
if( $readingsHistory_hasJSON ) {
$decoded = decode_json( $encoded );
} elsif( $readingsHistory_hasDataDumper ) {
$decoded = eval $encoded;
}
$hash->{fhem}{history} = $decoded->{$hash->{NAME}} if( defined($decoded->{$hash->{NAME}}) );
} else {
my $msg = "readingsHistory_Load: Cannot open $statefile: $!";
Log3 undef, 1, $msg;
}
return undef;
}
sub
readingsHistory_Set($@)
{
my ($hash, $name, $cmd, $param, @a) = @_;
my $list = "add clear:noArg";
my $no_html = AttrVal( $name, "nohtml", "0" );
my $spacing = "&nbsp;&nbsp;";
$spacing = " " if $no_html;
if( $cmd eq "clear" ) {
$hash->{fhem}{history} = [];
my $t = time;
my $tm = readingsHistory_makeTimestamp( time, AttrVal( $name, "timestampFormat", undef) );
my $msg = "$tm$spacing--clear--";
my $entry = [$t,"", $cmd, $msg];
unshift( @{$hash->{fhem}{history}}, $entry );
DoTrigger( "$name", "clear: $msg" ) if( $hash->{mayBeVisible} );
return undef;
} elsif ( $cmd eq "add" ) {
my $t = time;
my $tm = readingsHistory_makeTimestamp( time, AttrVal( $name, "timestampFormat", undef) );
my $msg = "$tm$spacing$param ". join( " ", @a );
my $entry = [$t,"", "$param ". join( " ", @a ),$msg];
while( @{$hash->{fhem}{history}} >= AttrVal($name,"rows", 5 ) ) {
pop @{$hash->{fhem}{history}};
}
unshift( @{$hash->{fhem}{history}}, $entry );
DoTrigger( "$name", "history: <html>$msg</html>" ) if( $hash->{mayBeVisible} );
return undef;
}
return "Unknown argument $cmd, choose one of $list";
}
sub
readingsHistory_Get($@)
{
my ($hash, @a) = @_;
my $list = "history:noArg html:noArg";
my $name = $a[0];
return "$name: get needs at least one parameter" if(@a < 2);
my $cmd= $a[1];
my $ret = "";
if( $cmd eq "html" ) {
return readingsHistory_2html($hash);
} elsif( $cmd eq "history" ) {
my $rows = AttrVal($name,"rows", 5 );
$rows = 1 if( $rows < 1 );
my $timestampFormat = AttrVal( $name, "timestampFormat", undef);
for (my $i = 0; $i < $rows; $i++) {
my $line = $hash->{fhem}{history}[$i];
if( ref($line) eq 'ARRAY' ) {
my $tm = readingsHistory_makeTimestamp( $line->[0], $timestampFormat );
$ret .= "$tm\t$line->[1]\t$line->[2]\t$line->[3]" if( $line );
} else {
$ret .= $line if( $line );
}
$ret .= "\n";
}
return $ret;
}
return "Unknown argument $cmd, choose one of $list";
}
sub
readingsHistory_Attr($$$)
{
my ($cmd, $name, $attrName, $attrVal) = @_;
my $orig = $attrVal;
if( $attrName eq "alwaysTrigger" ) {
my $hash = $defs{$name};
$attrVal = 1 if($attrVal);
if( $cmd eq "set" ) {
$hash->{alwaysTrigger} = $attrVal;
delete( $hash->{helper}->{myDisplay} ) if( $hash->{alwaysTrigger} );
} else {
delete $hash->{alwaysTrigger};
}
}
if( $cmd eq "set" ) {
if( $orig ne $attrVal ) {
$attr{$name}{$attrName} = $attrVal;
return $attrName ." set to ". $attrVal;
}
}
return;
}
1;
=pod
=item helper
=item summary display a history of readings from on or more devices
=item summary_DE Anzeige der Historie von Readings eines oder mehrerer Ger&auml;te
=begin html
<a name="readingsHistory"></a>
<h3>readingsHistory</h3>
<ul>
Displays a history of readings from on or more devices.
<br><br>
<a name="readingsHistory_Define"></a>
<b>Define</b>
<ul>
<code>define &lt;name&gt; readingsHistory [&lt;device&gt;[:regex] [&lt;device-2&gt;[:regex-2] ... [&lt;device-n&gt;[:regex-n]]]]</code><br>
<br>
Notes:
<ul>
<li>&lt;device&gt; can be of the form INTERNAL=VALUE where INTERNAL is the name of an internal value and VALUE is a regex.</li>
<li>If regex is a comma separatet list it will be used as an enumeration of allowed readings.</li>
<li>if no device/reading argument is given only lines with 'set &lt;device&gt; add ...' are displayed.</li>
</ul><br>
Examples:
<ul>
</ul>
</ul><br>
<a name="readingsHistory_Set"></a>
<b>Set</b>
<ul>
<li>add ...<br>
directly add text as new line to history.</li>
<li>clear<br>
clear the history.</li>
</ul><br>
<a name="readingsHistory_Get"></a>
<b>Get</b>
<ul>
<li>history<br>
list history</li>
</ul><br>
<a name="readingsHistory_Attr"></a>
<b>Attributes</b>
<ul>
<li>alwaysTrigger<br>
1 -> alwaysTrigger update events. even if not visible.</li>
<li>disable<br>
1 -> disable notify processing and longpoll updates. Notice: this also disables rename and delete handling.<br>
2 -> also disable html table creation<br>
3 -> also disable html creation completely</li>
<li>noheading<br>
If set to 1 the readings table will have no heading.</li>
<li>nolinks<br>
Disables the html links from the heading and the reading names.</li>
<li>notime<br>
If set to 1 the reading timestamp is not displayed.</li>
<li>mapping<br>
Can be a simple string or a perl expression enclosed in {} that returns a hash that maps device names
to the displayed name. The keys can be either the name of the reading or &lt;device&gt;.&lt;reading&gt;.
%DEVICE, %ALIAS, %ROOM and %GROUP are replaced by the device name, device alias, room attribute and
group attribute respectively. You can also prefix these keywords with $ instead of %.
</li>
<li>style<br>
Specify an HTML style for the readings table, e.g.:<br>
<code>attr history style style="font-size:20px"</code></li>
<li>timestampFormat<br>
POSIX strftime compatible string for used as the timestamp for each line.
</li>
<li>valueFormat<br>
Specify an sprintf style format string used to display the reading values. If the format string is undef
this reading will be skipped. Can be given as a string, a perl expression returning a hash or a perl
expression returning a string, e.g.:<br>
<code>attr history valueFormat %.1f &deg;C</code><br>
<code>attr history valueFormat { temperature => "%.1f &deg;C", humidity => "%.1f %" }</code><br>
<code>attr history valueFormat { ($READING eq 'temperature')?"%.1f &deg;C":undef }</code></li>
<li>rows<br>
Number of history rows to show.</li>
</ul>
</ul>
=end html
=cut