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Reading and Writing Files
Scripts are often designed to write data to files such as logs or backups. The Standard Additions scripting addition contains a number of commands that make it possible to read and write files. How to download from gopro to mac.
Writing to a File
The handlers in Listing 16-1 and Listing 16-2 safely write data to disk, creating a new file if the targeted file doesn’t already exist. Provide the text to write, a target file path, and indicate whether to overwrite existing content. If you choose not to overwrite existing content, then the text provided is appended to any existing content.
APPLESCRIPT
Listing 16-1AppleScript: Handler that writes text to a file
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JAVASCRIPT
Listing 16-2JavaScript: Function that writes text to a file
Listing 16-3 and Listing 16-4 show how to call the handlers in Listing 16-1 and Listing 16-2 to write text content to a file on the Desktop, replacing any existing content in the file.
APPLESCRIPT
Listing 16-3AppleScript: Calling a handler to write text to a file
JAVASCRIPT
Listing 16-4JavaScript: Calling a function to write text to a file
Listing 16-5 and Listing 16-6 show how Listing 16-1 and Listing 16-2 could be called to insert dated log entries into a log file.
APPLESCRIPT
Listing 16-5AppleScript: Calling a handler to write an entry to a log file
JAVASCRIPT
Listing 16-6JavaScript: Calling a function to write an entry to a log file
In practice, this technique could be used to maintain a log when script errors occur. Listing 16-7 and Listing 16-8 are try statements, which can be wrapped around custom script code in order to log any script errors to a file in the
~/Library/Logs/ folder of the current user’s home directory.
Malwarebytes 1.1 mac download. APPLESCRIPT
Script Fu Download GimpListing 16-7AppleScript: Example of a try statement that writes an entry to a log file when an error occurs
JAVASCRIPT
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Reading a File
The handlers in Listing 16-9 and Listing 16-10 read the contents of a specified file.
APPLESCRIPT
Listing 16-9AppleScript: Handler that reads the contents of a file
JAVASCRIPT
Listing 16-10JavaScript: Function that reads the contents of a file
Listing 16-11 and Listing 16-12 show how to call the handlers in Listing 16-9 and Listing 16-10 to read a specified text file.
APPLESCRIPT
Gimp 2.10 Script Fu DownloadListing 16-11AppleScript: Calling a handler to read the contents of a file
JAVASCRIPT
Listing 16-12JavaScript: Calling a function to read the contents of a file
Reading and Splitting a File
The handlers in Listing 16-13 and Listing 16-14 read the contents of a specified text file, using a delimiter to split it into a list.
APPLESCRIPT
Listing 16-13AppleScript: Handler for reading and splitting the contents of a file based on a delimiter
Listing 16-15 and Listing 16-16 shows how to call the handlers in Listing 16-13 and Listing 16-14 to read the paragraphs of a chosen log file.
APPLESCRIPT
Listing 16-15AppleScript: Calling a handler to read and split the contents of a file based on a delimiter
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JAVASCRIPT
Listing 16-16JavaScript: Calling a function to read and split the contents of a file based on a delimiter
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