Watch

[jondkoon]

watch command for landslide. solves issue #66.

Adds new dependency: watchdog

Tested on mac osx.

It works by first writing the presentation. As it is being written it creates an array of sources that gets parsed. It simply watches any of the files that were parsed and if they change then it regenerates the presentation.

Use Ctrl-C to exit watch mode.

[jondkoon]

I have been using this to prepare a presentation and just uncovered some bugs.

• The table of contents doesn't get reset on every run
• The slide count doesn't get reset on every run

This results in really high slide numbers and a repetitive table of contents

I will look into these, so I don't recommend merging this in quite yet.

[jondkoon]

I have fixed the table of contents and slide numbers bugs.

Do you have any feedback on this adamzap?

thanks.

[adamzap]

I'm trying to decide whether we should require watchdog or make it optional.

Maybe if they try the -w flag, it would try to import watchdog and upon a failure, tell them to install it.

What do you think? I guess I'm hesitant to add watchdog as a dependency (along with its many dependencies). Maybe I'm wrong.

[adamzap]

Whenever I save my .md file in vim, I immediately get this from the watch process:

○ ./main.py -w ~/Desktop/landslide_test/test.md
Adding   /Users/adam/Desktop/landslide_test/test.md (markdown)
Generated file: presentation.html

Watching /Users/adam/Desktop/landslide_test/test.md

Adding   /Users/adam/Desktop/landslide_test/test.md (markdown)Generated file: presentation.html

Watching /Users/adam/Desktop/landslide_test/test.md

Exception in thread Thread-2:Traceback (most recent call last):
  File "/usr/local/Cellar/python/2.7.2/lib/python2.7/threading.py", line 552, in __bootstrap_inner
    self.run()
  File "/usr/local/Cellar/python/2.7.2/lib/python2.7/site-packages/watchdog/observers/api.py", line 192, in run
    self.queue_events(self.timeout)
  File "/usr/local/Cellar/python/2.7.2/lib/python2.7/site-packages/watchdog/observers/kqueue.py", line 686, in queue_events
    self.watch.is_recursive)
  File "/usr/local/Cellar/python/2.7.2/lib/python2.7/site-packages/watchdog/utils/dirsnapshot.py", line 227, in __init__
    stat_info = os.stat(self._path)
OSError: [Errno 2] No such file or directory: '/Users/adam/Desktop/landslide_test/test.md'

Any ideas? Maybe it's me.

[jondkoon]

Just simulated a run using a near identical command ./main.py -w ~/Desktop/test.md

And it worked. I am on python 2.7.1 . I would hate for that to be the reason. I'll test with a virtual environment.

[jondkoon]

I think it would be fine to tell them just to install watchdog.
It is a nice to have feature rather than a requirement.

FYI:
You'll notice that I set recursive to "true" when I schedule the observer in watcher.py. This is because of this issue:
gorakhargosh/pathtools#1

That is a little concerning that he hasn't touched that project since February.

Watchdog itself looks pretty active though:
https://github.com/gorakhargosh/watchdog

[adamzap]

I tried smultron, and it's not seeing the changes...weird.

Which editor are you using?

I'll play with this more tonight. I'm probably missing something.

[jondkoon]

I use vim too.

[jondkoon]

Just tested on python 2.7.2 and it works fine for me.

[adamzap]

I used your code as starting point and finally implemented this...a year later.

Thanks!