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
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}"
72 a.header.add "Content-Type", "#{t.content_type}; name=#{bfn}"
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"
81 raise EncodingUnsupportedError, t.encoding
90 ## only valid for integer ranges (unless I guess it's exclusive)
92 last - first + (exclude_end? ? 0 : 1)
98 args.each { |sym| class_eval %{ def #{sym}?; @#{sym}; end } }
100 def bool_writer *args; attr_writer(*args); end
101 def bool_accessor *args
106 def defer_all_other_method_calls_to obj
108 def method_missing meth, *a, &b; @#{obj}.send meth, *a, &b; end
109 def respond_to? meth; @#{obj}.respond_to?(meth); end
119 until klass == Object
121 klass = klass.superclass
127 def returning x; yield x; x; end
129 ## clone of java-style whole-method synchronization
130 ## assumes a @mutex variable
131 def synchronized *meth
134 alias unsynchronized_#{meth} #{meth}
136 @mutex.synchronize { unsynchronized_#{meth}(*a, &b) }
145 self.gsub(/([a-z])([A-Z0-9])/, '\1-\2').downcase
148 def find_all_positions x
161 self[0 .. 0].upcase + self[1 .. -1]
164 ## a very complicated regex found on teh internets to split on
165 ## commas, unless they occurr within double quotes.
167 split(/,\s*(?=(?:[^"]*"[^"]*")*(?![^"]*"))/)
174 cut = s[0 ... len].rindex(/\s/)
177 s = s[(cut + 1) .. -1]
186 def normalize_whitespace
187 gsub(/\t/, " ").gsub(/\r/, "")
202 def in? range; range.member? self; end
206 def num_digits base=10
207 return 1 if self == 0
208 1 + (Math.log(self) / Math.log(10)).floor
212 if self < 128 && self >= 0
222 Hash[*self.map { |k, v| [k, v] unless o.include? k }.compact.flatten_one_level]
225 def select_by_value v=true
226 select { |k, vv| vv == v }.map { |x| x.first }
233 each_with_index { |x, i| ret << yield(x, i) }
237 def sum; inject(0) { |x, y| x + y }; end
241 each { |x| ret[x] = yield(x) }
245 # like find, except returns the value of the block rather than the
249 find { |e| ret ||= yield(e) }
254 best, bestval = nil, nil
257 if bestval.nil? || val < bestval
258 best, bestval = e, val
264 ## returns the maximum shared prefix of an array of strings
265 ## optinally excluding a prefix
266 def shared_prefix caseless=false, exclude=""
269 (0 ... first.length).each do |i|
270 c = (caseless ? first.downcase : first)[i]
271 break unless all? { |s| (caseless ? s.downcase : s)[i] == c }
272 next if exclude[i] == c
273 prefix += first[i].chr
279 map { |e| yield e }.max
284 def flatten_one_level
285 inject([]) { |a, e| a + e }
288 def to_h; Hash[*flatten]; end
289 def rest; self[1..-1]; end
291 def to_boolean_h; Hash[*map { |x| [x, true] }.flatten]; end
293 def last= e; self[-1] = e end
298 sprintf "%012d", self
305 self + (60 - min) * 60
309 def midnight # within a second
310 self - (hour * 60 * 60) - (min * 60) - sec
313 def is_the_same_day? other
314 (midnight - other.midnight).abs < 1
317 def is_the_day_before? other
318 other.midnight - midnight <= 24 * 60 * 60 + 1
321 def to_nice_distance_s from=Time.now
322 later_than = (self < from)
323 diff = (self.to_i - from.to_i).abs.to_f
329 ["week", 4.345], # heh heh
332 ].argfind do |unit, size|
335 elsif size.nil? || diff.round < size
336 "#{diff.round} #{unit}s"
349 TO_NICE_S_MAX_LEN = 9 # e.g. "Yest.10am"
350 def to_nice_s from=Time.now
353 elsif month != from.month
356 if is_the_same_day? from
358 elsif is_the_day_before? from
359 "Yest." + nearest_hour.strftime("%l%P")
367 ## simple singleton module. far less complete and insane than the ruby
368 ## standard library one, but automatically forwards methods calls and
369 ## allows for constructors that take arguments.
371 ## You must have #initialize call "self.class.i_am_the_instance self"
372 ## at some point or everything will fail horribly.
375 def instance; @instance; end
376 def instantiated?; defined?(@instance) && !@instance.nil?; end
377 def deinstantiate!; @instance = nil; end
378 def method_missing meth, *a, &b
379 raise "no instance defined!" unless defined? @instance
381 ## if we've been deinstantiated, just drop all calls. this is
382 ## useful because threads that might be active during the
383 ## cleanup process (e.g. polling) would otherwise have to
384 ## special-case every call to a Singleton object
385 return nil if @instance.nil?
387 @instance.send meth, *a, &b
389 def i_am_the_instance o
390 raise "there can be only one! (instance)" if defined? @instance
395 def self.included klass
396 klass.extend ClassMethods
400 ## wraps an object. if it throws an exception, keeps a copy, and
401 ## rethrows it for any further method calls.
408 def clear_error!; @e = nil; end
409 def has_errors?; !@e.nil?; end
412 def method_missing m, *a, &b; __pass m, *a, &b; end
414 def id; __pass :id; end
415 def to_s; __pass :to_s; end
416 def to_yaml x; __pass :to_yaml, x; end
417 def is_a? c; @o.is_a? c; end
419 def respond_to? m; @o.respond_to? m end
424 rescue Exception => e
431 ## acts like a hash with an initialization block, but saves any
432 ## newly-created value even upon lookup.
437 ## attr_accessor :val
438 ## def initialize; @val = 0 end
441 ## h = Hash.new { C.new }
446 ## h2 = SavingHash.new { C.new }
451 ## important note: you REALLY want to use #member? to test existence,
452 ## because just checking h[anything] will always evaluate to true
453 ## (except for degenerate constructor blocks that return nil or false)
461 @hash[k] ||= @constructor.call(k)
464 defer_all_other_method_calls_to :hash