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  2. Custom IC SKILL
  3. Ignore the lower or uppercase in regular expression.

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Ignore the lower or uppercase in regular expression.

Jason Hsu
Jason Hsu over 7 years ago

Hi,

  Anyone can tell me how to ignore the lowercase or uppercase in skill code? And any operator before the match unit? Similar as 'i' in Perl, '?i' in Java.

  I want to match the height text and do a replace. rexMatchp( "^HT" text ). Sometime, the information for text is lowercase, but sometime it is uppercase. Except to use upperCase(text), if can I have other way. Please help me. Thanks in advance.

Regards,

Jason

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  • Andrew Beckett
    Andrew Beckett over 7 years ago

    Hi Jason,

    Assuming you're using IC610 or later, use pcreMatchp instead of the very old rexMatchp. This is more powerful (it's using the Perl Compatible Regular Expressions). Then  you can do:

    pcreMatchp("^HT" text pcreGenCompileOptBits(?caseLess t))

    Regards,

    Andrew.

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  • Jason Hsu
    Jason Hsu over 7 years ago in reply to Andrew Beckett

    Thank you very much, Andrew: ). I have to say, I must make more efforts to learn Skill. Thanks a lot.

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  • Jason Hsu
    Jason Hsu over 7 years ago in reply to Andrew Beckett

    Hi Andrew,

      Sorry, I have to ask your help again. Can you tell me where I can find the doc for pcreMatchp's usage? Format and parameter. I am using Allegro, I can't find any help in 'Skill Language User Guide'. BTW, if pcreMatchp can match a list? I mean when I have several keyword -- "^HT" "^HEIGHT" "^HGT" "MAX HT", and if can I use one pcreMatchp to match text and ignore the lowercase and uppercase? Sorry to bother you, appreciate your help Slight smile

    Regards,

    Jason

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  • Andrew Beckett
    Andrew Beckett over 7 years ago in reply to Jason Hsu

    Hi Jason,

    A few things:

    1. These functions are covered in the SKILL Language Reference - which is also in the Allegro release. It's in the doc directory, under sklangref/sklangref.pdf and should be findable in cdnshelp, or at Cadence SKILL Language Reference (6.1.6) on the support site (I found this by navigating to the SPB17.2-2016 release manuals)
    2. There's pcreMatchList, but that's not what you want - that's to match against a list of candidate values to return which elements in the list matched the pattern. You appear to want a list of patterns.
    3. Rather than providing a list of patterns, you could just use a group of alternative patterns with a pipe character:
      pcreMatchp("(^HT|^HEIGHT|^HGT|MAX HT)" text pcreGenCompileOptBits(?caseLess t))

    Regards,

    Andrew.

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  • Jason Hsu
    Jason Hsu over 7 years ago in reply to Andrew Beckett

    Andrew,

      Thank you for your help. I can use this function -- pcreMatchp("(^HT|^HEIGHT|^HGT|MAX[ ]+HT)" text pcreGenCompileOptBits(?caseLess t)) to satisfy my request now. I will learn the usage of Regular Expression refer to your sugestion. Thanks again.

    Regards,

    Jason

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