6 ## time for some monkeypatching!
10 'host' => "#{ Socket.gethostname }",
11 'pid' => "#{ Process.pid }",
12 'ppid' => "#{ Process.ppid }",
19 def dump_lock_id lock_id = @lock_id
20 "host: %s\npid: %s\nppid: %s\ntime: %s\nuser: %s\npname: %s\n" %
21 lock_id.values_at('host','pid','ppid','time','user', 'pname')
25 h = load_lock_id IO.read(path)
26 h['mtime'] = File.mtime path
30 def touch_yourself; touch path end
38 rescue SystemCallError
46 ctime.strftime("%Y-%m-%d %H:%M")
47 rescue SystemCallError
53 ## more monkeypatching!
55 class EncodingUnsupportedError < StandardError; end
58 def self.make_file_attachment fn
59 bfn = File.basename fn
60 t = MIME::Types.type_for(bfn).first || MIME::Types.type_for("exe").first
61 make_attachment IO.read(fn), t.content_type, t.encoding, bfn.to_s
65 if header.field?("content-type") && header.fetch("content-type") =~ /charset="?(.*?)"?(;|$)/i
70 def self.make_attachment payload, mime_type, encoding, filename
72 a.header.add "Content-Disposition", "attachment; filename=#{filename.inspect}"
73 a.header.add "Content-Type", "#{mime_type}; name=#{filename.inspect}"
74 a.header.add "Content-Transfer-Encoding", encoding if encoding
79 when "quoted-printable"
81 when "7bit", "8bit", nil
84 raise EncodingUnsupportedError, encoding.inspect
92 ## only valid for integer ranges (unless I guess it's exclusive)
94 last - first + (exclude_end? ? 0 : 1)
100 args.each { |sym| class_eval %{ def #{sym}?; @#{sym}; end } }
102 def bool_writer *args; attr_writer(*args); end
103 def bool_accessor *args
108 def defer_all_other_method_calls_to obj
110 def method_missing meth, *a, &b; @#{obj}.send meth, *a, &b; end
111 def respond_to?(m, include_private = false)
112 @#{obj}.respond_to?(m, include_private)
123 until klass == Object
125 klass = klass.superclass
131 def returning x; yield x; x; end
133 ## clone of java-style whole-method synchronization
134 ## assumes a @mutex variable
135 ## TODO: clean up, try harder to avoid namespace collisions
136 def synchronized *meth
139 alias unsynchronized_#{meth} #{meth}
141 @mutex.synchronize { unsynchronized_#{meth}(*a, &b) }
147 def ignore_concurrent_calls *meth
149 mutex = "@__concurrent_protector_#{meth}"
150 flag = "@__concurrent_flag_#{meth}"
151 oldmeth = "__unprotected_#{meth}"
153 alias #{oldmeth} #{meth}
155 #{mutex} = Mutex.new unless defined? #{mutex}
156 #{flag} = true unless defined? #{flag}
157 run = #{mutex}.synchronize do
164 ret = #{oldmeth}(*a, &b)
165 #{mutex}.synchronize { #{flag} = true }
176 self.gsub(/([a-z])([A-Z0-9])/, '\1-\2').downcase
179 def find_all_positions x
191 ## a very complicated regex found on teh internets to split on
192 ## commas, unless they occurr within double quotes.
194 split(/,\s*(?=(?:[^"]*"[^"]*")*(?![^"]*"))/)
197 ## ok, here we do it the hard way. got to have a remainder for purposes of
198 ## tab-completing full email addresses
199 def split_on_commas_with_remainder
206 when :escaped_instring, :escaped_outstring: pos
207 else index(/[,"\\]/, pos)
220 when :outstring: :instring
221 when :instring: :outstring
222 when :escaped_instring: :instring
223 when :escaped_outstring: :outstring
227 when :outstring, :escaped_outstring:
228 ret << self[region_start ... newpos].gsub(/^\s+|\s+$/, "")
229 region_start = newpos + 1
231 when :instring: :instring
232 when :escaped_instring: :instring
236 when :instring: :escaped_instring
237 when :outstring: :escaped_outstring
238 when :escaped_instring: :instring
239 when :escaped_outstring: :outstring
245 remainder = case state
247 self[region_start .. -1].gsub(/^\s+/, "")
259 cut = s[0 ... len].rindex(/\s/)
262 s = s[(cut + 1) .. -1]
271 def normalize_whitespace
272 gsub(/\t/, " ").gsub(/\r/, "")
287 def in? range; range.member? self; end
292 elsif self < (1024 * 1024)
293 (self / 1024).to_s + "k"
294 elsif self < (1024 * 1024 * 1024)
295 (self / 1024 / 1024).to_s + "m"
297 (self / 1024 / 1024 / 1024).to_s + "g"
304 if self < 128 && self >= 0
311 ## hacking the english language
328 Hash[*self.map { |k, v| [k, v] unless o.include? k }.compact.flatten_one_level]
331 def select_by_value v=true
332 select { |k, vv| vv == v }.map { |x| x.first }
339 each_with_index { |x, i| ret << yield(x, i) }
343 def sum; inject(0) { |x, y| x + y }; end
347 each { |x| ret[x] = yield(x) }
351 # like find, except returns the value of the block rather than the
355 find { |e| ret ||= yield(e) }
360 best, bestval = nil, nil
363 if bestval.nil? || val < bestval
364 best, bestval = e, val
370 ## returns the maximum shared prefix of an array of strings
371 ## optinally excluding a prefix
372 def shared_prefix caseless=false, exclude=""
375 (0 ... first.length).each do |i|
376 c = (caseless ? first.downcase : first)[i]
377 break unless all? { |s| (caseless ? s.downcase : s)[i] == c }
378 next if exclude[i] == c
379 prefix += first[i].chr
385 map { |e| yield e }.max
390 def flatten_one_level
391 inject([]) { |a, e| a + e }
394 def to_h; Hash[*flatten]; end
395 def rest; self[1..-1]; end
397 def to_boolean_h; Hash[*map { |x| [x, true] }.flatten]; end
399 def last= e; self[-1] = e end
400 def nonempty?; !empty? end
405 sprintf "%012d", self
412 self + (60 - min) * 60
416 def midnight # within a second
417 self - (hour * 60 * 60) - (min * 60) - sec
420 def is_the_same_day? other
421 (midnight - other.midnight).abs < 1
424 def is_the_day_before? other
425 other.midnight - midnight <= 24 * 60 * 60 + 1
428 def to_nice_distance_s from=Time.now
429 later_than = (self < from)
430 diff = (self.to_i - from.to_i).abs.to_f
436 ["week", 4.345], # heh heh
439 ].argfind do |unit, size|
442 elsif size.nil? || diff.round < size
443 "#{diff.round} #{unit}s"
456 TO_NICE_S_MAX_LEN = 9 # e.g. "Yest.10am"
457 def to_nice_s from=Time.now
460 elsif month != from.month
463 if is_the_same_day? from
465 elsif is_the_day_before? from
466 "Yest." + nearest_hour.strftime("%l%P")
474 ## simple singleton module. far less complete and insane than the ruby
475 ## standard library one, but automatically forwards methods calls and
476 ## allows for constructors that take arguments.
478 ## You must have #initialize call "self.class.i_am_the_instance self"
479 ## at some point or everything will fail horribly.
482 def instance; @instance; end
483 def instantiated?; defined?(@instance) && !@instance.nil?; end
484 def deinstantiate!; @instance = nil; end
485 def method_missing meth, *a, &b
486 raise "no instance defined!" unless defined? @instance
488 ## if we've been deinstantiated, just drop all calls. this is
489 ## useful because threads that might be active during the
490 ## cleanup process (e.g. polling) would otherwise have to
491 ## special-case every call to a Singleton object
492 return nil if @instance.nil?
494 @instance.send meth, *a, &b
496 def i_am_the_instance o
497 raise "there can be only one! (instance)" if defined? @instance
502 def self.included klass
503 klass.extend ClassMethods
507 ## wraps an object. if it throws an exception, keeps a copy.
517 def clear_error!; @error = nil; end
518 def has_errors?; !@error.nil?; end
520 def method_missing m, *a, &b; __pass m, *a, &b end
522 def id; __pass :id; end
523 def to_s; __pass :to_s; end
524 def to_yaml x; __pass :to_yaml, x; end
525 def is_a? c; @o.is_a? c; end
527 def respond_to?(m, include_private=false)
528 @o.respond_to?(m, include_private)
534 rescue Exception => e
541 ## acts like a hash with an initialization block, but saves any
542 ## newly-created value even upon lookup.
547 ## attr_accessor :val
548 ## def initialize; @val = 0 end
551 ## h = Hash.new { C.new }
556 ## h2 = SavingHash.new { C.new }
561 ## important note: you REALLY want to use #member? to test existence,
562 ## because just checking h[anything] will always evaluate to true
563 ## (except for degenerate constructor blocks that return nil or false)
571 @hash[k] ||= @constructor.call(k)
574 defer_all_other_method_calls_to :hash
577 class OrderedHash < Hash
578 alias_method :store, :[]=
579 alias_method :each_pair, :each
584 a.each { |k, v| self[k] = v }
588 @keys << key unless member?(key)
592 def values; keys.map { |k| self[k] } end
593 def index key; @keys.index key end
600 def each; @keys.each { |k| yield k, self[k] } end
603 ## easy thread-safe class for determining who's the "winner" in a race (i.e.
604 ## first person to hit the finish line
612 @m.synchronize { !@over && @over = true }
617 def self.easy_decode target, charset, text
618 return text if charset =~ /^(x-unknown|unknown[-_ ]?8bit|ascii[-_ ]?7[-_ ]?bit)$/i
619 charset = case charset
620 when /UTF[-_ ]?8/i: "utf-8"
621 when /(iso[-_ ])?latin[-_ ]?1$/i: "ISO-8859-1"
622 when /iso[-_ ]?8859[-_ ]?15/i: 'ISO-8859-15'
623 when /unicode[-_ ]1[-_ ]1[-_ ]utf[-_]7/i: "utf-7"
629 # Remember - Iconv.open(to, from)!
630 Iconv.iconv(target + "//IGNORE", charset, text + " ").join[0 .. -2]