Populate iTunes playlist from csv file - applescript

Question

Could anyone offer a way to populate my playlist with songs from a csv file/text file formatted like this:
song title,artist?
I can do it for title alone but can't specify it must have a certain artist.
EDIT: Here is an example of how I'm getting them by titles:
set TheFile to read file "Macintosh HD:Applications:Automator stuff:01b iTunes Scripts:SongList.txt"
tell application "iTunes"
set thePlaylist to playlist "SongList"
try
delete every track of thePlaylist
end try
set MySongs to paragraphs of (TheFile) -- read artist names (separated by newlines) from the file
repeat with AnItem in MySongs -- get all tracks from each artist
set AnItem to (contents of AnItem)
if AnItem is not "" then try -- don't bother with empty names
set MyTracks to (location of file tracks of playlist "Music" whose name is AnItem)
--can also modify the above from "is" to "contains" or "_begins with_"
add MyTracks to thePlaylist
on error errmess -- oopsie (not found, etc)
log errmess -- just log it
end try
end repeat
end tell

Answer 1

OK, figured it out! Couldn't work out how to work around titles with commas in them (which I have a few of), so I ended up using tab separating them instead. So, once I have my tab-separated file, this code did the trick:
set thisTSVFile to (choose file with prompt "Select the CSV file")
readTabSeparatedValuesFile(thisTSVFile)
set theList to readTabSeparatedValuesFile(thisTSVFile)
tell application "iTunes"
set myPlaylist to playlist "Test1"
set sourcePlaylist to playlist "Music"
end tell
repeat with i from 2 to number of items in readTabSeparatedValuesFile(thisTSVFile)
--gets first column
set theName to item 1 of item i of theList
--gets second
set theArtist to item 2 of item i of theList
tell application "iTunes"
duplicate (some track of sourcePlaylist whose name is theName and artist is theArtist) to myPlaylist
end tell
delay 0.1
end repeat
on readTabSeparatedValuesFile(thisTSVFile)
try
set dataBlob to (every paragraph of (read thisTSVFile))
set the tableData to {}
set AppleScript's text item delimiters to tab
repeat with i from 1 to the count of dataBlob
set the end of the tableData to (every text item of (item i of dataBlob))
end repeat
set AppleScript's text item delimiters to ""
return tableData
on error errorMessage number errorNumber
set AppleScript's text item delimiters to ""
error errorMessage number errorNumber
end try
end readTabSeparatedValuesFile

Answer 2

You can use ObjectiveC (or probably Swift too) with XCode to do the heavy lifting (parsing the files) then hit iTunes from there, although it will likely be a lot slower than running in the iTunes process through its script menu.
Here's some ObjectiveC code that gets the current track title; you can adapt the method to suit a more complicated script like populating a playlist.
+(NSString *)getTitle {
return [self runAppleScriptAndReturnResult:#"Tell application \"iTunes\" \nreturn the name of the current track\nend tell"];
}
+(NSString *)runAppleScriptAndReturnResult:(NSString*)script {
NSAppleScript *appleScript=[[NSAppleScript alloc] initWithSource:[NSString stringWithFormat:#"with timeout of 3 seconds\n%#\nend timeout\n", script]];
return [[appleScript executeAndReturnError:nil] stringValue];
}