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PORuby: Issues parsing a CSV and looping through rows
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2013-11-20T12:59:13.400
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I have a CSV with a number of filenames and dates: <pre><code>"doc_1.doc", "date1" "doc_2.doc", "date2" "doc_5.doc", "date5" </code></pre> The issue is that there are many gaps in between file numbers, e.g.: <code>doc_2</code> and <code>doc_5</code> I am trying to write a script that parses the CSV and fills in the gaps by comparing each row and filling in the gaps where necessary. e.g. in this example, it would add <pre><code>"doc_3.doc", "date copied from date2" "doc_4.doc", "date copied from date2" </code></pre> I'm trying to write this script in Ruby since I'm trying to learn the language and clearly I am misunderstanding the way Ruby's looping works because it's not the typical 'for' loops one uses often in PHP etc. Here is my code so far, any help with the loop itself would be greatly appreciated! <pre><code>#!/usr/bin/env ruby require 'csv' # Load file csv_fname = './upload-list-docs.csv' # Parsing function def parse_csv(csv_fname) uploads = [] last_number = 0 # Regex to find number in doc_XXX.YYY regex_find_number = /(?<=\_)(.*?)(?=\.)/ csv_content = CSV.read(csv_fname) # Skip header row csv_content.shift csv_content.each do |row| current_number = row[0].match regex_find_number current_date = row[1] last_date = current_date until last_number == current_number do uploads << [last_number, last_date] last_number += 1 end end return uploads end puts parse_csv(csv_fname) </code></pre> And some sample CSV <pre><code>"file_name","date" "doc_1.jpg","2011-05-11 09:16:05.000000000" "doc_3.doc","2011-05-11 10:10:36.000000000" "doc_4.doc","2011-05-11 10:17:19.000000000" "doc_6.doc","2011-05-11 10:58:35.000000000" "doc_7.pdf","2011-05-11 11:16:22.000000000" "doc_8.pdf","2011-05-11 11:19:29.000000000" "doc_9.docx","2011-05-11 11:40:03.000000000" "doc_13.pdf","2011-05-11 12:26:32.000000000" "doc_14.docx","2011-05-11 12:34:50.000000000" "doc_15.doc","2011-05-11 12:40:12.000000000" "doc_16.doc","2011-05-11 13:03:11.000000000" "doc_17.doc","2011-05-11 13:03:58.000000000" "doc_19.pdf","2011-05-11 13:25:07.000000000" "doc_20.rtf","2011-05-11 13:34:26.000000000" "doc_21.rtf","2011-05-11 13:35:25.000000000" "doc_24.doc","2011-05-11 13:49:02.000000000" "doc_25.doc","2011-05-11 14:05:04.000000000" "doc_26.pdf","2011-05-11 14:18:26.000000000" "doc_27.rtf","2011-05-11 14:30:19.000000000" "doc_28.doc","2011-05-11 14:33:13.000000000" "doc_29.jpg","2011-05-11 15:07:27.000000000" "doc_30.doc","2011-05-11 15:22:30.000000000" "doc_31.doc","2011-05-11 15:31:07.000000000" "doc_34.doc","2011-05-11 15:51:56.000000000" "doc_35.doc","2011-05-11 15:55:15.000000000" "doc_36.doc","2011-05-11 16:06:46.000000000" "doc_38.wps","2011-05-11 16:21:08.000000000" "doc_39.doc","2011-05-11 16:30:57.000000000" "doc_40.doc","2011-05-11 16:41:55.000000000" "doc_43.JPG","2011-05-11 17:03:40.000000000" "doc_46.doc","2011-05-11 17:28:13.000000000" "doc_51.doc","2011-05-11 17:50:34.000000000" "doc_52.doc","2011-05-11 18:03:13.000000000" "doc_53.doc","2011-05-11 18:43:48.000000000" "doc_54.doc","2011-05-11 18:54:45.000000000" "doc_55.doc","2011-05-11 19:31:03.000000000" "doc_56.doc","2011-05-11 19:31:23.000000000" "doc_57.doc","2011-05-11 20:17:38.000000000" "doc_59.jpg","2011-05-11 20:22:55.000000000" "doc_61.pdf","2011-05-11 21:14:52.000000000" </code></pre>
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<ruby><regex><parsing><csv>
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Ruby: Issues parsing a CSV and looping through rows
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