delta: A library for detecting file changes

Delta is a library for detecting file changes in any given directory. The package is written using the sodium FRP library but it also provides a callback based API.

File changes on OS X are based on the FSEvents API that is also used by TimeMachine. On other operating systems the library currently uses recursive descents in directories. I will include inotify for Linux. If someone would like to have a non-polling based API for windows or BSD, I would really like it if anyone would contribute.

The project also contains an executable, delta-run, which allows you to run arbitrary shell commands when a file in a directory (recursively) changes.

$> delta-run --help
Usage: delta-run [-i|--interval INTERVAL] [-v|--verbose] FILE CMD
Available options:
-h,--help                Show this help text
-i,--interval INTERVAL   Run at most every n seconds
-v,--verbose             Print extra output
FILE                     The directory that is watched
CMD                      The command to run

For example you could use delta-run to rebuild your project everytime the source changes like this:

delta-run ./src "cabal build"

Modules

[Index]

Flags

Automatic Flags

Name	Description	Default
build_fs_events	Build in FSEvents support (OS X)	Enabled

Use -f <flag> to enable a flag, or -f -<flag> to disable that flag. More info

Downloads

• delta-0.2.1.2.tar.gz [browse] (Cabal source package)
• Package description (revised from the package)

Note: This package has metadata revisions in the cabal description newer than included in the tarball. To unpack the package including the revisions, use 'cabal get'.

Maintainer's Corner

Package maintainers

• muzzle

For package maintainers and hackage trustees

• edit package information

Candidates

• 0.1.0.0, 0.2.1.2