CODEWITHSUNDEEP
applescript
aholub
aholub

Reputation: 451

applescript script runs from command line, but not when saved to app and double clicked

I'm trying to write a script that runs both as an app and from the command line using osascript. In both cases, I want to pop up a "help" dialog. In the case of the app, it should pop up when I double click the app. In the case of the command-line launch, I want it to pop up when I run the script without arguments (eg: osascript myScript.scpt) . The attached script does not pop up the dialog properly when I double click the app, but it does work from the command line. If I delete just the argv on the first line, and then remove the -- on the second, thereby emulating the existence of argv, it works fine with a double click. That is, the behavior is radically different when I use the supplied argv than it is when I don't. Is this a bug or am I doing something wrong?

on run argv             -- if I remove the argv from this line
    --  set argv to []  -- and then comment *in* this line, it works fine
    getDefaults()       -- when I double-click the app

    if (count of argv) = 0 then 
        displayHelp()  -- doesn't display on double click when I use "on run argv"
    else
        processFromCommandLine(argv)
    end if
end run

on displayHelp()
     display dialog "Help!"
end displayHelp
on processFromCommandLine(argv)
end processFromCommandLine

Upvotes: 1

Views: 272

Answers (2)

user4934183
user4934183

Reputation:

There's almost certainly a better way, but this works:

on run argv

    -- Display help.
    if argv = current application or ¬
        argv's class ≠ list or argv's length = 0 then
        display dialog "Help!"
        return
    end if

    -- Do stuff.

end run

It looks like the direct parameter for the run handler is set to...

Upvotes: 1

jweaks
jweaks

Reputation: 3792

The Script App is quitting with error when you double-click because arg is not assigned to a class you can count, but then you try and get its count. Just wrap it in a try block instead.

on run argv
    getDefaults()
    try
        get (count of argv)
        processFromCommandLine(argv)
    on error
        displayHelp()
    end try
end run

Upvotes: 1

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