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Newbie Joined: 08 Oct 2008 Posts: 9

Hi, im trying to set up a simple trigger but im running into troubles on how the regex is implemented in zscript

Posted: Wed Oct 08, 2008 5:15 pm

The %match function doesn't use regex, it uses the simpler zScript pattern syntax. However, you can do what you're after with this function by putting the captures into a variable so you can do something else with them, you could do something like:

#echo test %match("test","(%w)",$var) value: $var

which will print "test 1 value: test". This example uses a local variable - you can use a global variable in the same way:

#echo test %match("test","(%w)",var) value: @var

That's about it really.

You'll might find the %regex function or %subregex (which has considerably more options) to be more useful.

However, it's likely there's a better way to do what you're trying to do, and there's probably an alternative method that'll be simpler, and probably faster too, because both %match and %subregex have to compile the regex before they try to make a match. If you explain the actual problem you're trying to solve, we can suggest some alternatives.

Newbie Joined: 08 Oct 2008 Posts: 9

Thanks a lot for helping, yeah I assumed that when the api talked about "pattern" it would accept a regex inside.

My goal is to make a equipment database class, that captures when active the output of a spell or a scroll.. for example;

Posted: Thu Oct 09, 2008 7:35 am

This is quite a common problem and there's an easier way to do it using multistate triggers. Perhaps:

#trig {You recite a scroll of identify which turns to dust in your hands.$} {#var IDItem ""}
#cond {($name:.+) weighs ($weight:\d+) pounds and is worth roughly ($w_plat:\d+) platinum, ($w_gold:\d+) gold, and ($w_silver:\d+) silver.} {Do whatever you like with the variables to store them. I'd do something like: #addkey IDItem Name $name;#addkey IDItem Weight $weight and so on, using a data record variable. You can plug those straight into CMUD's database module if you want} {regex}
#cond {The following abilities are granted when using this item:} {}
#cond {($abilities:*)} {The easy way to get this list of abilities into a variable is to capture them all at once and then replace the spaces with pipe characters: #addkey IDItem Abilities %replace($abilities," ","|")}

At this point, you'll want to enable a class that contains patterns for all the optional lines you can have. Then, finally, you'll want some line that terminates your item (a blank line or your prompt, usually) at which you turn everything off and store the item in the database.

Oh, the regex for the money needs improving; it won't match all the time.