Class: FileWatch::Watch
- Inherits:
-
Object
- Object
- FileWatch::Watch
- Defined in:
- lib/filewatch/watch.rb
Instance Attribute Summary collapse
-
#logger ⇒ Object
Returns the value of attribute logger.
Instance Method Summary collapse
- #discover ⇒ Object
- #each(&block) ⇒ Object
- #exclude(path) ⇒ Object
-
#initialize(opts = {}) ⇒ Watch
constructor
A new instance of Watch.
- #quit ⇒ Object
- #subscribe(stat_interval = 1, discover_interval = 5, &block) ⇒ Object
- #watch(path) ⇒ Object
Constructor Details
#initialize(opts = {}) ⇒ Watch
Returns a new instance of Watch.
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# File 'lib/filewatch/watch.rb', line 12 def initialize(opts={}) @iswindows = ((RbConfig::CONFIG['host_os'] =~ /mswin|mingw|cygwin/) != nil) @opts = { ignore_before: 0 }.merge(opts) if opts[:logger] @logger = opts[:logger] else @logger = Logger.new(STDERR) @logger.level = Logger::INFO end @watching = [] @exclude = [] @files = Hash.new { |h, k| h[k] = Hash.new } end |
Instance Attribute Details
#logger ⇒ Object
Returns the value of attribute logger.
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# File 'lib/filewatch/watch.rb', line 9 def logger @logger end |
Instance Method Details
#discover ⇒ Object
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# File 'lib/filewatch/watch.rb', line 110 def discover @watching.each do |path| _discover_file(path) end end |
#each(&block) ⇒ Object
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# File 'lib/filewatch/watch.rb', line 55 def each(&block) # Send any creates. @files.keys.each do |path| if ! @files[path][:create_sent] if @files[path][:initial] yield(:create_initial, real(path)) else yield(:create, real(path)) end @files[path][:create_sent] = true end end @files.keys.each do |path| begin stat = File::Stat.new(path) rescue Errno::ENOENT # file has gone away or we can't read it anymore. @files.delete(path) @logger.debug("#{path}: stat failed (#{$!}), deleting from @files") yield(:delete, real(path)) next end if @iswindows fileId = Winhelper.GetWindowsUniqueFileIdentifier(path) inode = [fileId, stat.dev_major, stat.dev_minor] else inode = [stat.ino.to_s, stat.dev_major, stat.dev_minor] end if inode != @files[path][:inode] @logger.debug("#{path}: old inode was #{@files[path][:inode].inspect}, new is #{inode.inspect}") yield(:delete, real(path)) yield(:create, real(path)) elsif stat.size < @files[path][:size] @logger.debug("#{path}: file rolled, new size is #{stat.size}, old size #{@files[path][:size]}") yield(:delete, real(path)) yield(:create, real(path)) elsif stat.size > @files[path][:size] @logger.debug("#{path}: file grew, old size #{@files[path][:size]}, new size #{stat.size}") yield(:modify, real(path)) else # since there is no update, we should pass control back in case the caller needs to do any work # otherwise, they can ONLY do other work when a file is created or modified # @logger.debug("#{path}: nothing to update") yield(:noupdate, real(path)) end @files[path][:size] = stat.size @files[path][:inode] = inode end # @files.keys.each end |
#exclude(path) ⇒ Object
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# File 'lib/filewatch/watch.rb', line 34 def exclude(path) path.to_a.each { |p| @exclude << p } end |
#quit ⇒ Object
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# File 'lib/filewatch/watch.rb', line 200 def quit @quit = true end |
#subscribe(stat_interval = 1, discover_interval = 5, &block) ⇒ Object
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# File 'lib/filewatch/watch.rb', line 117 def subscribe(stat_interval = 1, discover_interval = 5, &block) glob = 0 @quit = false while !@quit each(&block) glob += 1 if glob == discover_interval discover glob = 0 end sleep(stat_interval) end end |
#watch(path) ⇒ Object
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# File 'lib/filewatch/watch.rb', line 39 def watch(path) if ! @watching.member?(path) @watching << path _discover_file(path, true) end return true end |