The HOME environment variable is not set on Windows by default. Instead Windows uses USERPROFILE. It is possible for HOME to be set on Windows but for users who have not done this they will get: `HOME: unbound variable`. I have added a line that sets HOME to USERPROFILE if HOME is missing and USERPROFILE is found. This solves the unbound variable error.
track number was eg "Chapter 03", and is now eg 3 . This fits better in most mp3 players.
track title was the book title for all tracks, now it is eg "Book Title - 01 Chapter 1" (same as filename)
- Use shorthand flags for `rm`: `-r` instead of `--recursive`, `-f` instead of `--force`
- Add fallbacks for `mktemp`. See http://unix.stackexchange.com/a/84980
- Use shorthand flags for `cut`: `-d` instead of `--delimiter`, `-f` instead of `--fields`
Tested on OSX 10.11.6 El Capitan
* Use lower case variable names
* Extract debug print method
* Split lines
* Simplify looping over parameters
* Use a temporary working directory for safety
* Extract metadata fetching into functions
* Don't replace colon in title
It's in the directory structure anyway.
* Use long ffmpeg options where possible
And use the same options everywhere.
* Don't print debug information during normal script run
* Always read into a dummy variable rather than REPLY
* Use `ffprobe` instead of `ffmpeg` to avoid non-zero exit code
* Handle special characters like single quotes in metadata values
* Stop the program if any errors occur
* Use FD 9 for `while` loop input
* Pass AAX file path to metadata extract command
* Avoid skipping every second file
* Don't check for `ffmpeg`
The script will exit if it's not available.
* Declare function variables local
* Fix whitespace handling
Works with filenames containing single quotes.
* Use variables for reused paths
* Put files in output directory immediately
* Clarify debug output
* Extract codec and extension for simple change
* Encode audiobooks as FLAC
* Put output files with input files
* Remove metadata file between files
* Default codec to MP3; enable FLAC using `--flac`
