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Understanding Ifmatch
Posted: May 14th, 2019, 4:02 am
by ms310
Hi there - I have stumbled upon some code and I would like to know how it works.
Code: Select all
[MeasureCurrent]
Measure=Plugin
Plugin=WebParser
Url=https://wxdata.weather.com/wxdata/weather/local/#Location#?cc=*&unit=#Unit#
RegExp="(?siU)<head>.*<ut>(.*)</ut>.*<dnam>(.*)</dnam>.*<tmp>(.*)</tmp>.*<t>(.*)</t>.*<hmid>(.*)</hmid>.*<icon>(.*)</icon>"
UpdateRate=900
StringIndex=6
IfMatch=(?si)0
IfMatchAction=[!SetVariable FontColor "133,133,133"]
IfMatch2=(?si)1|2|3|4|17|35|
IfMatchAction2=[!SetVariable FontColor "34,2,101"]
IfMatch3=(?si)5|6|7|8|9|10|11|12|18
IfMatchAction3=[!SetVariable FontColor "93,106,123"]
IfMatch4=(?si)13|14|15|16|25|42|43
IfMatchAction4=[!SetVariable FontColor "226,223,232"]
IfMatch5=(?si)19|20|21|22|23|24
IfMatchAction5=[!SetVariable FontColor "151,147,159"]
IfMatch6=(?si)26|44
IfMatchAction6=[!SetVariable FontColor "58,146,255"]
IfMatch7=(?si)28|29|33|45
IfMatchAction7=[!SetVariable FontColor "44,102,174"]
IfMatch8=(?si)31
IfMatchAction8=[!SetVariable FontColor "3,55,98"]
IfMatch9=(?si)30|32|34|37|38|39|40|41
IfMatchAction9=[!SetVariable FontColor "241,154,16"]
I get that based on some condition set the variable FontColor. What confuses me is the Match statements - what is being compared? Thanks for the help!
Re: Understanding Ifmatch
Posted: May 14th, 2019, 5:12 am
by ikarus1969
IfMatch compares/matches the result of its measure. In this case the, because it's a Webparser measure, the resulting string is set by the
StringIndex-option.
Here
StringIndex=6 means that the IfMatch-options match against the sixth capture: the icon-number.
Depending on the icon-number it sets the
FontColor used elsewhere.
e.g. for icon numbers 1, 2, 3, 4, 17 or 35 it sets the
FontColor to "
34,2,101" (
IfMatch2)
docu:
IfMatchActions
edit: a capture is basially something sourrounded by "
(" and "
)" (if not escaped by a back-slash). What i use as a reference to regular-expressions is
https://www.regular-expressions.info/, but there are tons of sites dealing with regular-expressions...
Re: Understanding Ifmatch
Posted: May 14th, 2019, 5:47 am
by ms310
ikarus1969 wrote: ↑May 14th, 2019, 5:12 am
IfMatch compares/matches the result of its measure. In this case the, because it's a Webparser measure, the resulting string is set by the
StringIndex-option.
Here
StringIndex=6 means that the IfMatch-options match against the sixth capture: the icon-number.
Depending on the icon-number it sets the
FontColor used elsewhere.
e.g. for icon numbers 1, 2, 3, 4, 17 or 35 it sets the
FontColor to "
34,2,101" (
IfMatch2)
docu:
IfMatchActions
edit: a capture is basially something sourrounded by "
(" and "
)" (if not escaped by a back-slash). What i use as a reference to regular-expressions is
https://www.regular-expressions.info/, but there are tons of sites dealing with regular-expressions...
AHHHHHHHH! Thank you so very much! That makes a lot of sense!
Re: Understanding Ifmatch
Posted: May 14th, 2019, 6:43 am
by ikarus1969
Glad to help!
Re: Understanding Ifmatch
Posted: May 14th, 2019, 7:07 am
by balala
Just note one more: although the IfConditions are entirely numeric and you can't use them to compare strings, in a such case when the measure returns number, IfConditions also can be used. I don't say it would have any advantage in front of IfMatch, probably it doesn1t have, just to know the possibility, here is another solution to the same problem:
Code: Select all
[MeasureCurrent]
Measure=WebParser
Url=https://wxdata.weather.com/wxdata/weather/local/#Location#?cc=*&unit=#Unit#
RegExp=(?siU)<head>.*<ut>(.*)</ut>.*<dnam>(.*)</dnam>.*<tmp>(.*)</tmp>.*<t>(.*)</t>.*<hmid>(.*)</hmid>.*<icon>(.*)</icon>
UpdateRate=900
StringIndex=6
IfCondition=(#CURRENTSECTION#=0)
IfTrueAction=[!SetVariable FontColor "133,133,133"]
IfCondition2=(((#CURRENTSECTION#>=1)&&(#CURRENTSECTION#<=4))||(#CURRENTSECTION#=17)||(#CURRENTSECTION#=35))
IfTrueAction2=[!SetVariable FontColor "34,2,101"]
IfCondition3=(((#CURRENTSECTION#>=5)&&(#CURRENTSECTION#<=12))||(#CURRENTSECTION#=18))
IfTrueAction3=[!SetVariable FontColor "93,106,123"]
IfCondition4=(((#CURRENTSECTION#>=13)&&(#CURRENTSECTION#<=16))||(#CURRENTSECTION#=25)||(#CURRENTSECTION#=42)||(#CURRENTSECTION#=43))
IfTrueAction4=[!SetVariable FontColor "226,223,232"]
IfCondition5=((#CURRENTSECTION#>=19)&&(#CURRENTSECTION#<=24))
IfTrueAction5=[!SetVariable FontColor "151,147,159"]
IfCondition6=((#CURRENTSECTION#=26)||(#CURRENTSECTION#=44))
IfTrueAction6=[!SetVariable FontColor "58,146,255"]
IfCondition7=((#CURRENTSECTION#=28)||(#CURRENTSECTION#=29)||(#CURRENTSECTION#=33)||(#CURRENTSECTION#=45))
IfTrueAction7=[!SetVariable FontColor "44,102,174"]
IfCondition8=(#CURRENTSECTION#=31)
IfTrueAction8=[!SetVariable FontColor "3,55,98"]
IfCondition9=((#CURRENTSECTION#=30)||(#CURRENTSECTION#=32)||(#CURRENTSECTION#=34)||((#CURRENTSECTION#>=37)&&(#CURRENTSECTION#<=41)))
IfTrueAction9=[!SetVariable FontColor "241,154,16"]
No IfMatches in this case.
Again, probably this solution has no advantages in front of the solution with IfMatch, it's just another approach of the same problem.
Note that in the above (re)posted measure I:
EDIT: Fixed this code, after ikarus1969
found a mistake in the originally posted one. Thanks ikarus1969 and sorry for my mistake.
Re: Understanding Ifmatch
Posted: May 14th, 2019, 7:24 am
by ikarus1969
balala wrote: ↑May 14th, 2019, 7:07 am
Code: Select all
IfCondition9=((#CURRENTSECTION#=30)||(#CURRENTSECTION#=32)||(#CURRENTSECTION#=34)||((#CURRENTSECTION#=37)||(#CURRENTSECTION#<=41)))
IfTrueAction9=[!SetVariable FontColor "241,154,16"]
Wouldn't the only Color be "241, 154, 16" because of your
IfCondition9?
There is "...||(#CURRENTSECTION#<=41)" without combining it with the lower value "37" correctly with an "and"-condition.
Re: Understanding Ifmatch
Posted: May 14th, 2019, 9:51 am
by balala
ikarus1969 wrote: ↑May 14th, 2019, 7:24 am
Wouldn't the only Color be "241, 154, 16" because of your
IfCondition9?
There is "...||(#CURRENTSECTION#<=41)" without combining it with the lower value "37" correctly with an "and"-condition.
OOPS, you're absolutely right. My mistake. Correctly IfCondition9 is:
IfCondition9=((#CURRENTSECTION#=30)||(#CURRENTSECTION#=32)||(#CURRENTSECTION#=34)||((#CURRENTSECTION#>=37)&&(#CURRENTSECTION#<=41))).
I fixed the code I've posted above as well.
Sorry for my mistake.
Re: Understanding Ifmatch
Posted: December 10th, 2020, 4:33 pm
by nikko
hello. can someone tell me will this work or not? i do not know is this all correct. thanks in advance.
Code: Select all
[Variables]
Signs=XYZ
[msSigns]
Measure=String
String=#Signs#
IfMatch=X
IfMatchAction=[!ShowMeter "mtSign1"][!UpdateMeter "mtSign1"]
IfNotMatchAction=[!HideMeter "mtSign1"][!UpdateMeter "mtSign1"]
IfMatch2=Y
IfMatchAction2=[!ShowMeter "mtSign2"][!UpdateMeter "mtSign2"]
IfNotMatchAction2=[!HideMeter "mtSign2"][!UpdateMeter "mtSign2"]
IfMatch3=Z
IfMatchAction3=[!ShowMeter "mtSign3"][!UpdateMeter "mtSign3"]
IfNotMatchAction3=[!HideMeter "mtSign3"][!UpdateMeter "mtSign3"]
DynamicVariables=1
[mtSign1]
...
[mtSign2]
...
[mtSign3]
...
Re: Understanding Ifmatch
Posted: December 10th, 2020, 5:03 pm
by SilverAzide
nikko wrote: ↑December 10th, 2020, 4:33 pm
hello. can someone tell me will this work or not? i do not know is this all correct. thanks in advance.
Sure, it will work, but it is not clear what you are trying to do. If your intent is to have every match fail and fire all 3 of the
IfNotMatchAction cases, then it should work great.
IfMatch matches exactly (the way you have it written), so since "XYZ" isn't exactly "X", "Y", or "Z", then all the "not" matches will fire. If you want to match any part of the string, then you need to adjust your IfMatch expression, like so:
Code: Select all
IfMatch=.*X.*
...
IfMatch2=.*Y.*
...
IfMatch3=.*Z.*
In this case, all 3 of the
IfMatchActions will fire since the "XYZ" string contains an X, a Y, and a Z somewhere in the string.
More info here in the manual:
https://docs.rainmeter.net/manual/measures/general-options/ifmatchactions/
Re: Understanding Ifmatch
Posted: December 10th, 2020, 6:26 pm
by balala
nikko wrote: ↑December 10th, 2020, 4:33 pm
hello. can someone tell me will this work or not? i do not know is this all correct. thanks in advance.
There always is an extremely simple way to find out if such a code does or doesn't work: you have to give it a try and you'll find out by yourself. As SilverAzide siad, the posted code does definitely work, however unfortunately he had a small mistake (see below).