By Hanaan Rosenthal
Read Online or Download AppleScript: The Comprehensive Guide to Scripting and Automation on Mac OS X, Second Edition PDF
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Additional info for AppleScript: The Comprehensive Guide to Scripting and Automation on Mac OS X, Second Edition
AppleScript File Formats You can save scripts in several file formats, including as compiled scripts, text files, applets, and variations of these. scpt extension. This format can be edited using AppleScript editors only, not just any text editor. Although you write scripts using text and you can usually see the text when you reopen a saved script, the script is actually saved as special tokens that are interpreted by the operating system’s AppleScript component when the script runs. You usually won’t notice this “what-you-see-is-not-what-you-saved” situation unless the script has some version issue or an application or scripting addition issue.
Once you compile the script, the font, and possibly the color of the text, changes. Suddenly AppleScript understands what you’re saying. Well, it understand what you’re saying given you speak to it properly, of course. qxd 14 8/29/06 4:05 PM Page 14 CHAPTER 2 ■ SCRIPTING—FROM THE GROUND UP Figure 2-1. The noncompiled script in the Script Editor window Take a second to understand what happens when you click the Compile button. Before that, you will save the “random number” script as text to the desktop.
Then, the script adds a dollar sign to the number and inserts it in a named text frame in the page-layout application. These operations strung together take up, say, thirty lines of code, and they repeat in about five places in your script. You can make the script much better by defining your own commands to handle each of these tasks! How about a few commands that go by the names get_data_from_database, format_data, and insert_data_into_layout? This command you write yourself is called a handler (or a subroutine).
AppleScript: The Comprehensive Guide to Scripting and Automation on Mac OS X, Second Edition by Hanaan Rosenthal