Chapter import: Adding support for chapterdb.org XML and TXT formats

[sverrirs]

Adding basic support for chapter name import from XML and TXT files downloaded from chapterdb.org. -Only chapter names will be imported into HandBrake and timings and chapter count originally detected by HandBrake will be left unchanged.

Summary:

• Added basic validation for main import function that validates input data against chapter information retrieved from source media
• Added two new input parsers for XML and TXT formats (parser is chosen based on file extension)
• Added a new convenience constructor to GeneralApplicationException to use when thrown with no inner exception

[sverrirs]

Whenever you have some spare time @sr55 ;)

[sr55]

@sverrirs - Sure, Another weekend task for me. Thank you.

[sr55]

Just a quick note, I have a wrapper around message box in the error service (if i recall correctly). Handy if I ever decide to write a unit test suite for the UI since it allows the mocking of UI responses.

[sverrirs]

Excellent, I was actually going to ask you about that. I will update this to use the error service msgbox :)

[sverrirs]

@sr55 Regarding unit-tests I was going to mention that we might want to abstract away all the FileIO access into a IFileInputService of sorts and just pass in Streams into the ViewModel functions. This would make it easier to add tests. I'm more than willing to do the work and add unit-tests for the changes I made to the ChaptersViewModel to kick this effort off :)

[sr55]

If your interested, feel free.

I haven't really put a lot of thought into what I wanted to do with Unit testing yet.
I've typically used NUnit and Moq in the past as that integrates well with ReSharper. I've heard good things about XUnit but not had a chance to actually play with it. The ViewModel / Models and the factories are probably going to be the biggest wins.

If you have any thoughts or suggestions, I'd love to hear.

[sr55]

P.s If your ever bored, most the developers are on #Handbrake on FreeNode IRC. Various timezones since we are pretty spread out, so if you don't get an response, stick around.