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# FileStat contains file system information about a single file including:
#
# path - The fully expanded path of the file
# mtime - The last modified time of the file, as a Time object
# size - The size of the file, in bytes.
#
# The FileStat object can also say if the file is removed of not.
#
class DirectoryWatcher::FileStat
# The fully expanded path of the file
attr_reader :path
# The last modified time of the file
attr_accessor :mtime
# The size of the file in bytes
attr_accessor :size
# Create an instance of FileStat that will make sure that the instance method
# +removed?+ returns true when called on it.
#
def self.for_removed_path( path )
::DirectoryWatcher::FileStat.new(path, nil, nil)
end
# Create a new instance of FileStat with the given path, mtime and size
#
def initialize( path, mtime, size )
@path = path
@mtime = mtime
@size = size
end
# Is the file represented by this FileStat to be considered removed?
#
# FileStat doesn't actually go to the file system and check, it assumes if the
# FileStat was initialized with a nil mtime or a nil size then that data
# wasn't available, and therefore must indicate that the file is no longer in
# existence.
#
def removed?
@mtime.nil? || @size.nil?
end
# Compare this FileStat to another object.
#
# This will only return true when all of the following are true:
#
# 1) The other object is also a FileStat object
# 2) The other object's mtime is equal to this mtime
# 3) The other object's msize is equal to this size
#
def eql?( other )
return false unless other.instance_of? self.class
self.mtime == other.mtime and self.size == other.size
end
alias :== :eql?
# Create a nice string based representation of this instance.
#
def to_s
"<#{self.class.name} path: #{path} mtime: #{mtime} size: #{size}>"
end
end
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