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some help with a simple RegEX please

  • 21-10-2013 12:23pm
    #1
    bonzodog2
    Registered Users, Registered Users 2 Posts: 6,253 ✭✭✭


    I've been googling for half an hour, and this apparently simple situation is eluding me; its been a while since I used regexes.

    I have a CSV file with 3 feilds per line, no quotes:
    1. alnum with an embedded space
    2. a signed float (i.e. - before and . within)
    3 an unsigned float

    I'm using Textpad to try to do a regex search/replace, to take out the commas and insert some xml tags in their place

    I tried
    ^[^\,]*[^\,]*[^\,]*$
    but Textpad says it can't find the regex


Comments

  • #2
    Draco
    Subscribers Posts: 1,911 ✭✭✭Draco


    You can live test your regex using Regexpal. Just paste in a few lines of your CSV and it'll show you exactly what your regex matches as you change it. I find it very useful for debuging regexs.


  • #3
    stevenmu
    Moderators, Society & Culture Moderators Posts: 9,689 Mod ✭✭✭✭stevenmu


    http://gskinner.com/RegExr/ is another good one, with a handy reference on the side.


  • #4
    Skrynesaver
    Registered Users, Registered Users 2 Posts: 1,109 ✭✭✭Skrynesaver


    bonzodog2 wrote: »
    I've been googling for half an hour, and this apparently simple situation is eluding me; its been a while since I used regexes.

    I have a CSV file with 3 feilds per line, no quotes:
    1. alnum with an embedded space
    2. a signed float (i.e. - before and . within)
    3 an unsigned float

    I'm using Textpad to try to do a regex search/replace, to take out the commas and insert some xml tags in their place

    I tried
    ^[^\,]*[^\,]*[^\,]*$
    but Textpad says it can't find the regex
    Try describing your regex in words, it often illustrates the issue...
    begining of string followed by any number of characters that aren't commas, followed by any number of characters that aren't commas, followed by any number of characters that aren't commas followed by the end of the string....

    Try 
    ^[^\,]*,[^\,]*,[^\,]*$


  • #5
    bonzodog2
    Registered Users, Registered Users 2 Posts: 6,253 ✭✭✭bonzodog2


    Thanks for your comments and suggestions. I found another way to acheive what I want. I have a sqlite database with latitude/longitude and other data, and wanted to make a KML file to display on Google Earth. I found http://www.convertcsv.com/csv-to-kml.htm very useful.


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