Write a JavaScript to convert a text-list into CSV

A text file needs to be converted. - The text file contains a varying number of records. - The fields of the records are listed in one column in the source file each in a new line. - Each field is identified by the first character in the line. - The field value is the rest of the line to the right of the first character. - Each record ends with a "^". - Not each record contains each field. - The order of the fields inside a records may be different. - Lines with a leading "!" are comments and have to be ignored. UI flow: 1. The user opens a HTML page. 2. The user clicks on a button "Open Source File". 3. The user will be asked by a file dialog for the source text file. 4. The conversion is done with the local JavasScript without uploading to the webserver. 5. The user will be asked for the destination file name. The file dialog default needs to be the same directory as the source and the file name needs to be the same as the source, but the extension needs to be replaced to ".csv". For testing the HTML page needs to be send to me. I will open and test it locally. It needs to run with IE 10 or greater, Chrome, Firefox, Safari 8 or greater, Opera. HTML5 may be used. Example source (without '####'): #### begin #### !any text !more any text U-21.45 D5.1.15 T-21.45 CX N528 MDM-Drogerie Markt Wasser. LEinkaufen:Drogerieartikel ^ D5.1.15 U-2.99 T-2.99 CX N529 [login to view URL] [login to view URL] LUX ^ D15.1.15 U-21.45 T-21.45 N5228 MDM2-Drogerie Markt Wurg a. LEinkauf2en:Drogerieartikel ^ D25.1.15 U-2.99 T-2.99 N5229 [login to view URL] [login to view URL] LUX ^ #### end #### required CSV result: #### begin #### "D";"U";"T";"C";"N";"M";"L" "5.1.15";"-21.45";"-21.45";"X";"528";"DM-Drogerie Markt Wasser.";"Einkaufen:Drogerieartikel" "5.1.15";"-2.99";"-2.99";"X";"529";"[login to view URL] [login to view URL] LUX" "15.1.15";"-21.45";"-21.45";"";"5228";"DM2-Drogerie Markt Wurg a.";"Einkauf2en:Drogerieartikel" "25.1.15";"-2.99";"-2.99";"";"5229";"[login to view URL] [login to view URL] LUX" #### end ####