Add 0 to empty csv cells using Groovy

问题

Im using a groovy script to concatenate between 2 fields on a CSV files. The script is working perfectly except it collapse once it hits empty cells.

I managed to use a powershell script to avoid this thing but then i got stuck with encoding issue

    <groovy>
  ant.mkdir(dir:"target")


  new File("target/UpsertCheckDeals.csv").withWriter {
    new File("C:/Users/alon\Documents\CheckDealBeforeUpsert.csv").splitEachLine(",") { Customer__c, Name__c, Deal__c, Amount__c, CheckCount__c, Discount__c ->
       it.println "${Customer__c},${Name__c},${CheckCount__c},${Deal__c},${Amount__c},${Discount__c},${Customer__c}-${Deal__c }"
    }
  }

</groovy>

Any suggestions how to solve this with groovy?

Thanks in advance

回答1:

Without details on the error, I'm going to assume the splitEachLine method cannot split the line into enough parts in order to assign values to all of the Closure's declared arguments.

To workaround this, I would use a single-arg closure. The single argument is assigned an array (List?) of the split values. You can check the length of the array before you attempt to process the row.

new File("target/UpsertCheckDeals.csv").withWriter {
    new File("C:/Users/alon\Documents\CheckDealBeforeUpsert.csv").splitEachLine(",") { parts ->
        if (parts.length != 6) return // or maybe it's .size()
        (Customer__c, Name__c, Deal__c, Amount__c, CheckCount__c, Discount__c) = parts
        it.println "${Customer__c},${Name__c},${CheckCount__c},${Deal__c},${Amount__c},${Discount__c},${Customer__c}-${Deal__c }"
    }
  }

来源：https://stackoverflow.com/questions/41396432/add-0-to-empty-csv-cells-using-groovy