Merging files in Applescript - applescript

Question

I am trying to do below in AppleScript.
Concatenate/Merge all *.xxx files found in a particular folder into one new file
Each file contains a header. Strip header from all but 1st file before merging.
Add a footer text to the merged file.
This sounds relatively simple in other languages but I am a beginner to applescript. Any help to find a direction would be appreciated.
TIA
AnuRV

Answer 1

Try this, you are prompted to choose a base folder and a destination file name.
Important: Use a destination location outside the base folder to avoid the file to be included in the merging process.
I assume that your tsv file type is a typo and you mean csv.
If not, change all occurrences of csv in the script.
The text delimiter is linefeed (0A), if you need return (0D) change the occurrence of linefeed to return.
set baseFolder to choose folder
set destinationFile to choose file name with prompt "Choose destination file name" default name "merged.csv"
tell application "Finder" to set tsvFiles to (files of baseFolder whose name extension is "csv") as alias list
set text item delimiters to linefeed
try
set fileDescriptor to open for access destinationFile with write permission
repeat with i from 1 to (count tsvFiles)
set theFile to item i of tsvFiles
set theText to paragraphs of (read theFile as «class utf8»)
if i = 1 then
write (theText as text) to fileDescriptor as «class utf8»
else
write ((items 2 thru -1 of theText) as text) to fileDescriptor as «class utf8»
end if
end repeat
close access fileDescriptor
on error
try
close destinationFile
end try
end try
set text item delimiters to {""}