diff options
Diffstat (limited to 'activesupport/lib/active_support')
-rw-r--r-- | activesupport/lib/active_support/file_watcher.rb | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/activesupport/lib/active_support/file_watcher.rb b/activesupport/lib/active_support/file_watcher.rb new file mode 100644 index 0000000000..046a5a0309 --- /dev/null +++ b/activesupport/lib/active_support/file_watcher.rb @@ -0,0 +1,41 @@ +module ActiveSupport + class FileWatcher + class Backend + def initialize(path, watcher) + @watcher = watcher + @path = path + end + + def trigger(files) + @watcher.trigger(files) + end + end + + def initialize + @regex_matchers = {} + end + + def watch(path, &block) + return watch_regex(path, &block) if path.is_a?(Regexp) + raise "Paths must be regular expressions. #{path.inspect} is a #{path.class}" + end + + def watch_regex(regex, &block) + @regex_matchers[regex] = block + end + + def trigger(files) + trigger_files = Hash.new { |h,k| h[k] = Hash.new { |h2,k2| h2[k2] = [] } } + + files.each do |file, state| + @regex_matchers.each do |regex, block| + trigger_files[block][state] << file if file =~ regex + end + end + + trigger_files.each do |block, payload| + block.call payload + end + end + end +end |