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RegEx for loc8codes

  • 14-07-2010 5:31pm
    #1
    ACProctor
    Registered Users Posts: 44 ✭


    I needed an officially-accepted regular expression (regex) for the new loc8 Irish GPS codes. I contacted the official site - who obviously didn't understand what I needed - and was told it was licensed and any attempt to validate a code would be a breach of copyright.

    No matter how much I emphasised the need for simple "syntactic validation", without the need to look them up, or know how they're generated, or know how they're checksummed, the agent was adamant and wouldn't defer to someone who knew what they were talking about.

    OK, so plan B was 'do it myself'. Here is a regular expression for anyone writing code that has to accept a loc8code from a user:

    ^[a-zA-Z][0-9A-Za-z]{2}-[0-9]{2}-[0-9A-Za-z]{3}$

    Please feel free to suggest improvements.

    Maybe the loc8 people will eventually publish this on their own site - which they can do but they will need my permission ;-)

    Tony Proctor


Comments

  • #2
    garydubh
    Closed Accounts Posts: 443 ✭✭garydubh


    ACProctor wrote: »
    I needed an officially-accepted regular expression (regex) for the new loc8 Irish postal codes. I contacted the official site - who obviously didn't understand what I needed - and was told it was licensed and any attempt to validate a code would be a breach of copyright.

    No matter how much I emphasised the need for simple "syntactic validation", without the need to look them up, or know how they're generated, or know how they're checksummed, the agent was adamant and wouldn't defer to someone who knew what they were talking about.

    OK, so plan B was 'do it myself'. Here is a regular expression for anyone writing code that has to accept a loc8code from a user:

    ^[a-zA-Z][0-9A-Za-z]{2}-[0-9]{2}-[0-9A-Za-z]{3}$

    Please feel free to suggest improvements.

    Maybe the loc8 people will eventually publish this on their own site - which they can do but they will need my permission ;-)

    Tony Proctor

    This is NOT an expression to identify a Loc8 Code - there are several other elements that are not explained here - This should not be used as suggested. The Publisher has insisted in publishing this when it has been clearly explained that it is incorrect.

    A Loc8 code is not just a collection of characters - one of the charcaters identifies the rest. The publisher here was told this and has ignored it and therefore this post is exremely misleading and should be ignored.

    The code needed to positively identify a Loc8 Code is available dircetly from Loc8 Code Ltd under license only.


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