Class: State

Inherits:
Object
  • Object
show all
Defined in:
lib/droxi/state.rb

Overview

Encapsulates the session state of the client.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(client) ⇒ State

Return a new application state that uses the given client. Starts at the Dropbox root and with an empty cache.



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# File 'lib/droxi/state.rb', line 26

def initialize(client)
  @cache = Cache.new
  @client = client
  @exit_requested = false
  @pwd = '/'
  @oldpwd = Settings[:oldpwd] || '/'
  @local_oldpwd = Dir.pwd
end

Instance Attribute Details

#cache ⇒ Object (readonly)

Hash of remote file paths to cached file metadata.



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# File 'lib/droxi/state.rb', line 10

def cache
  @cache
end

#exit_requested ⇒ Object

true if the client has requested to quit, false otherwise.



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# File 'lib/droxi/state.rb', line 22

def exit_requested
  @exit_requested
end

#local_oldpwd ⇒ Object

The previous local working directory path.



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# File 'lib/droxi/state.rb', line 19

def local_oldpwd
  @local_oldpwd
end

#oldpwd ⇒ Object (readonly)

The previous remote working directory path.



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# File 'lib/droxi/state.rb', line 16

def oldpwd
  @oldpwd
end

#pwd ⇒ Object

The remote working directory path.



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# File 'lib/droxi/state.rb', line 13

def pwd
  @pwd
end

Instance Method Details

#contents(path) ⇒ Object

Return an Array of paths of files in a Dropbox directory.



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# File 'lib/droxi/state.rb', line 50

def contents(path)
  path = resolve_path(path)
  metadata(path)
  path = "#{path}/".sub('//', '/')
  @cache.keys.select do |key|
    key.start_with?(path) && key != path && !key.sub(path, '').include?('/')
  end
end

#directory?(path) ⇒ Boolean

Return true if the Dropbox path is a directory, false otherwise.



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# File 'lib/droxi/state.rb', line 60

def directory?(path)
  path = resolve_path(path)
  metadata(File.dirname(path))
  @cache.include?(path) && @cache[path]['is_dir']
end

#expand_patterns(patterns, preserve_root = false) ⇒ Object

Expand an Array of file globs into an an Array of Dropbox file paths and return the result.



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# File 'lib/droxi/state.rb', line 88

def expand_patterns(patterns, preserve_root = false)
  patterns.flat_map do |pattern|
    path = resolve_path(pattern)
    if directory?(path)
      preserve_root ? pattern : path
    else
      get_matches(pattern, path, preserve_root)
    end
  end
end

#forget_contents(partial_path) ⇒ Object

Recursively remove directory contents from metadata cache. Yield lines of (error) output if a block is given.



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# File 'lib/droxi/state.rb', line 101

def forget_contents(partial_path)
  path = resolve_path(partial_path)
  if @cache.fetch(path, {}).include?('contents')
    @cache[path]['contents'].dup.each { |m| @cache.remove(m['path']) }
    @cache[path].delete('contents')
  elsif block_given?
    yield "forget: #{partial_path}: nothing to forget"
  end
end

#metadata(path, require_contents = true) ⇒ Object

Return a Hash of the Dropbox metadata for a file, or nil if the file does not exist.



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# File 'lib/droxi/state.rb', line 37

def metadata(path, require_contents = true)
  tokens = path.split('/').drop(1)

  (0..tokens.size).each do |i|
    partial_path = '/' + tokens.take(i).join('/')
    next if @cache.full_info?(partial_path, require_contents)
    return nil unless fetch_metadata(partial_path)
  end

  @cache[path]
end

#resolve_path(arg) ⇒ Object

Expand a Dropbox file path and return the result.



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# File 'lib/droxi/state.rb', line 74

def resolve_path(arg)
  # REVIEW: See if we can do this in fewer lines (e.g. without two gsub!s).
  path = arg.start_with?('/') ? arg.dup : "#{@pwd}/#{arg}"
  path.gsub!('//', '/')
  nil while path.sub!(%r{/([^/]+?)/\.\.}, '')
  nil while path.sub!('./', '')
  path.sub!(/\/\.$/, '')
  path.chomp!('/')
  path.gsub!('//', '/')
  path.empty? ? '/' : path
end