5 ## time for some monkeypatching!
9 'host' => "#{ Socket.gethostname }",
10 'pid' => "#{ Process.pid }",
11 'ppid' => "#{ Process.ppid }",
18 def dump_lock_id lock_id = @lock_id
19 "host: %s\npid: %s\nppid: %s\ntime: %s\nuser: %s\npname: %s\n" %
20 lock_id.values_at('host','pid','ppid','time','user', 'pname')
24 h = load_lock_id IO.read(path)
25 h['mtime'] = File.mtime path
29 def touch_yourself; touch path end
37 rescue SystemCallError
43 elsif s < (1024 * 1024)
45 elsif s < (1024 * 1024 * 1024)
46 (s / 1024 / 1024).to_s + "m"
48 (s / 1024 / 1024 / 1024).to_s + "g"
54 ctime.strftime("%Y-%m-%d %H:%M")
55 rescue SystemCallError
61 ## more monkeypatching!
63 class EncodingUnsupportedError < StandardError; end
66 def add_file_attachment fn
67 bfn = File.basename fn
69 t = MIME::Types.type_for(bfn).first || MIME::Types.type_for("exe").first
71 a.header.add "Content-Disposition", "attachment; filename=#{bfn.to_s.inspect}"
72 a.header.add "Content-Type", "#{t.content_type}; name=#{bfn.to_s.inspect}"
73 a.header.add "Content-Transfer-Encoding", t.encoding
77 [IO.read(fn)].pack "m"
78 when "quoted-printable"
79 [IO.read(fn)].pack "M"
83 raise EncodingUnsupportedError, t.encoding
90 if header.field?("content-type") && header.fetch("content-type") =~ /charset="?(.*?)"?(;|$)/
98 ## only valid for integer ranges (unless I guess it's exclusive)
100 last - first + (exclude_end? ? 0 : 1)
105 def bool_reader *args
106 args.each { |sym| class_eval %{ def #{sym}?; @#{sym}; end } }
108 def bool_writer *args; attr_writer(*args); end
109 def bool_accessor *args
114 def defer_all_other_method_calls_to obj
116 def method_missing meth, *a, &b; @#{obj}.send meth, *a, &b; end
117 def respond_to? meth; @#{obj}.respond_to?(meth); end
127 until klass == Object
129 klass = klass.superclass
135 def returning x; yield x; x; end
137 ## clone of java-style whole-method synchronization
138 ## assumes a @mutex variable
139 def synchronized *meth
142 alias unsynchronized_#{meth} #{meth}
144 @mutex.synchronize { unsynchronized_#{meth}(*a, &b) }
153 self.gsub(/([a-z])([A-Z0-9])/, '\1-\2').downcase
156 def find_all_positions x
169 self[0 .. 0].upcase + self[1 .. -1]
172 ## a very complicated regex found on teh internets to split on
173 ## commas, unless they occurr within double quotes.
175 split(/,\s*(?=(?:[^"]*"[^"]*")*(?![^"]*"))/)
182 cut = s[0 ... len].rindex(/\s/)
185 s = s[(cut + 1) .. -1]
194 def normalize_whitespace
195 gsub(/\t/, " ").gsub(/\r/, "")
210 def in? range; range.member? self; end
214 def num_digits base=10
215 return 1 if self == 0
216 1 + (Math.log(self) / Math.log(10)).floor
220 if self < 128 && self >= 0
230 Hash[*self.map { |k, v| [k, v] unless o.include? k }.compact.flatten_one_level]
233 def select_by_value v=true
234 select { |k, vv| vv == v }.map { |x| x.first }
241 each_with_index { |x, i| ret << yield(x, i) }
245 def sum; inject(0) { |x, y| x + y }; end
249 each { |x| ret[x] = yield(x) }
253 # like find, except returns the value of the block rather than the
257 find { |e| ret ||= yield(e) }
262 best, bestval = nil, nil
265 if bestval.nil? || val < bestval
266 best, bestval = e, val
272 ## returns the maximum shared prefix of an array of strings
273 ## optinally excluding a prefix
274 def shared_prefix caseless=false, exclude=""
277 (0 ... first.length).each do |i|
278 c = (caseless ? first.downcase : first)[i]
279 break unless all? { |s| (caseless ? s.downcase : s)[i] == c }
280 next if exclude[i] == c
281 prefix += first[i].chr
287 map { |e| yield e }.max
292 def flatten_one_level
293 inject([]) { |a, e| a + e }
296 def to_h; Hash[*flatten]; end
297 def rest; self[1..-1]; end
299 def to_boolean_h; Hash[*map { |x| [x, true] }.flatten]; end
301 def last= e; self[-1] = e end
306 sprintf "%012d", self
313 self + (60 - min) * 60
317 def midnight # within a second
318 self - (hour * 60 * 60) - (min * 60) - sec
321 def is_the_same_day? other
322 (midnight - other.midnight).abs < 1
325 def is_the_day_before? other
326 other.midnight - midnight <= 24 * 60 * 60 + 1
329 def to_nice_distance_s from=Time.now
330 later_than = (self < from)
331 diff = (self.to_i - from.to_i).abs.to_f
337 ["week", 4.345], # heh heh
340 ].argfind do |unit, size|
343 elsif size.nil? || diff.round < size
344 "#{diff.round} #{unit}s"
357 TO_NICE_S_MAX_LEN = 9 # e.g. "Yest.10am"
358 def to_nice_s from=Time.now
361 elsif month != from.month
364 if is_the_same_day? from
366 elsif is_the_day_before? from
367 "Yest." + nearest_hour.strftime("%l%P")
375 ## simple singleton module. far less complete and insane than the ruby
376 ## standard library one, but automatically forwards methods calls and
377 ## allows for constructors that take arguments.
379 ## You must have #initialize call "self.class.i_am_the_instance self"
380 ## at some point or everything will fail horribly.
383 def instance; @instance; end
384 def instantiated?; defined?(@instance) && !@instance.nil?; end
385 def deinstantiate!; @instance = nil; end
386 def method_missing meth, *a, &b
387 raise "no instance defined!" unless defined? @instance
389 ## if we've been deinstantiated, just drop all calls. this is
390 ## useful because threads that might be active during the
391 ## cleanup process (e.g. polling) would otherwise have to
392 ## special-case every call to a Singleton object
393 return nil if @instance.nil?
395 @instance.send meth, *a, &b
397 def i_am_the_instance o
398 raise "there can be only one! (instance)" if defined? @instance
403 def self.included klass
404 klass.extend ClassMethods
408 ## wraps an object. if it throws an exception, keeps a copy, and
409 ## rethrows it for any further method calls.
416 def clear_error!; @e = nil; end
417 def has_errors?; !@e.nil?; end
420 def method_missing m, *a, &b; __pass m, *a, &b; end
422 def id; __pass :id; end
423 def to_s; __pass :to_s; end
424 def to_yaml x; __pass :to_yaml, x; end
425 def is_a? c; @o.is_a? c; end
427 def respond_to? m; @o.respond_to? m end
432 rescue Exception => e
439 ## acts like a hash with an initialization block, but saves any
440 ## newly-created value even upon lookup.
445 ## attr_accessor :val
446 ## def initialize; @val = 0 end
449 ## h = Hash.new { C.new }
454 ## h2 = SavingHash.new { C.new }
459 ## important note: you REALLY want to use #member? to test existence,
460 ## because just checking h[anything] will always evaluate to true
461 ## (except for degenerate constructor blocks that return nil or false)
469 @hash[k] ||= @constructor.call(k)
472 defer_all_other_method_calls_to :hash