Multiline Group
【Question】
I need help in getting data from an order form and then putting it into a CSV.
Example order form:
**
First Name:John
Last Name:Smith
Middle Name:Lucy
**
I need to make a script that lets me change the order form to a CSV that has the order details in order. I'm thinking about using Python, but Hava is my strong point.
Example CSV:
John,Smith,Lucy
【Answer】
In the original file, lines are separated by two asterisks (**). What you need is to join non-empty lines into one row. It’s complicated to read-in data and process it by loop in Python. And, it’s impossible to integrate a Python script into a Java application. Here I try handling it in SPL (Structure Process Language). The coding is much simpler:
A |
|
1 |
=file("d:\\OrderForm.txt").read@n() |
2 |
=A1.group@o(~=="**") |
3 |
=A2.(~.regex(".*:(.*)").(#1)) |
4 |
=A3.select(~!=[]) |
5 |
=A4.(~.concat@c()) |
6 |
=file("d:\\result.csv").write(A5) |
A1: Read in each line of OrderForm.txt and return it as a string; each line is a member of the resulting sequence.
A2: Compare each line with its next one to group these lines according to whether the string is **.
A3: Match the string members in A2’s sequence with a regular expression.
A4: Get non-empty sequences.
A5: Join up A4’s members into a string by comma.
A6: Write A5’s result into result.csv.
An SPL script is easily integrated with a Java application. See How to Call an SPL Script in Java to learn more.
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