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 *methods
137 methods.each do |meth|
139 alias unsynchronized_#{meth} #{meth}
141 @mutex.synchronize { unsynchronized_#{meth}(*a, &b) }
147 def ignore_concurrent_calls *methods
148 methods.each do |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 }
175 ## nasty multibyte hack for ruby 1.8. if it's utf-8, split into chars using
176 ## the utf8 regex and count those. otherwise, use the byte length.
178 if $encoding == "UTF-8"
186 self.gsub(/([a-z])([A-Z0-9])/, '\1-\2').downcase
189 def find_all_positions x
201 ## a very complicated regex found on teh internets to split on
202 ## commas, unless they occurr within double quotes.
204 split(/,\s*(?=(?:[^"]*"[^"]*")*(?![^"]*"))/)
207 ## ok, here we do it the hard way. got to have a remainder for purposes of
208 ## tab-completing full email addresses
209 def split_on_commas_with_remainder
216 when :escaped_instring, :escaped_outstring then pos
217 else index(/[,"\\]/, pos)
230 when :outstring then :instring
231 when :instring then :outstring
232 when :escaped_instring then :instring
233 when :escaped_outstring then :outstring
237 when :outstring, :escaped_outstring then
238 ret << self[region_start ... newpos].gsub(/^\s+|\s+$/, "")
239 region_start = newpos + 1
241 when :instring then :instring
242 when :escaped_instring then :instring
246 when :instring then :escaped_instring
247 when :outstring then :escaped_outstring
248 when :escaped_instring then :instring
249 when :escaped_outstring then :outstring
255 remainder = case state
257 self[region_start .. -1].gsub(/^\s+/, "")
269 cut = s[0 ... len].rindex(/\s/)
272 s = s[(cut + 1) .. -1]
281 def normalize_whitespace
282 gsub(/\t/, " ").gsub(/\r/, "")
291 ## takes a space-separated list of words, and returns an array of symbols.
292 ## typically used in Sup for translating Ferret's representation of a list
293 ## of labels (a string) to an array of label symbols.
294 def symbolistize; split.map { |x| x.intern } end
308 def in? range; range.member? self; end
313 elsif self < (1024 * 1024)
314 (self / 1024).to_s + "k"
315 elsif self < (1024 * 1024 * 1024)
316 (self / 1024 / 1024).to_s + "m"
318 (self / 1024 / 1024 / 1024).to_s + "g"
325 if self < 128 && self >= 0
332 ## hacking the english language
349 Hash[*self.map { |k, v| [k, v] unless o.include? k }.compact.flatten_one_level]
352 def select_by_value v=true
353 select { |k, vv| vv == v }.map { |x| x.first }
360 each_with_index { |x, i| ret << yield(x, i) }
364 def sum; inject(0) { |x, y| x + y }; end
368 each { |x| ret[x] = yield(x) }
372 # like find, except returns the value of the block rather than the
376 find { |e| ret ||= yield(e) }
381 best, bestval = nil, nil
384 if bestval.nil? || val < bestval
385 best, bestval = e, val
391 ## returns the maximum shared prefix of an array of strings
392 ## optinally excluding a prefix
393 def shared_prefix caseless=false, exclude=""
396 (0 ... first.length).each do |i|
397 c = (caseless ? first.downcase : first)[i]
398 break unless all? { |s| (caseless ? s.downcase : s)[i] == c }
399 next if exclude[i] == c
400 prefix += first[i].chr
406 map { |e| yield e }.max
411 def flatten_one_level
412 inject([]) { |a, e| a + e }
415 def to_h; Hash[*flatten]; end
416 def rest; self[1..-1]; end
418 def to_boolean_h; Hash[*map { |x| [x, true] }.flatten]; end
420 def last= e; self[-1] = e end
421 def nonempty?; !empty? end
423 def to_set_of_symbols
424 map { |x| x.is_a?(Symbol) ? x : x.intern }.uniq
430 sprintf "%012d", self
437 self + (60 - min) * 60
441 def midnight # within a second
442 self - (hour * 60 * 60) - (min * 60) - sec
445 def is_the_same_day? other
446 (midnight - other.midnight).abs < 1
449 def is_the_day_before? other
450 other.midnight - midnight <= 24 * 60 * 60 + 1
453 def to_nice_distance_s from=Time.now
454 later_than = (self < from)
455 diff = (self.to_i - from.to_i).abs.to_f
461 ["week", 4.345], # heh heh
464 ].argfind do |unit, size|
467 elsif size.nil? || diff.round < size
468 "#{diff.round} #{unit}s"
481 TO_NICE_S_MAX_LEN = 9 # e.g. "Yest.10am"
482 def to_nice_s from=Time.now
485 elsif month != from.month
488 if is_the_same_day? from
490 elsif is_the_day_before? from
491 "Yest." + nearest_hour.strftime("%l%P")
499 ## simple singleton module. far less complete and insane than the ruby
500 ## standard library one, but automatically forwards methods calls and
501 ## allows for constructors that take arguments.
503 ## You must have #initialize call "self.class.i_am_the_instance self"
504 ## at some point or everything will fail horribly.
507 def instance; @instance; end
508 def instantiated?; defined?(@instance) && !@instance.nil?; end
509 def deinstantiate!; @instance = nil; end
510 def method_missing meth, *a, &b
511 raise "no instance defined!" unless defined? @instance
513 ## if we've been deinstantiated, just drop all calls. this is
514 ## useful because threads that might be active during the
515 ## cleanup process (e.g. polling) would otherwise have to
516 ## special-case every call to a Singleton object
517 return nil if @instance.nil?
519 @instance.send meth, *a, &b
521 def i_am_the_instance o
522 raise "there can be only one! (instance)" if defined? @instance
527 def self.included klass
528 klass.extend ClassMethods
532 ## wraps an object. if it throws an exception, keeps a copy.
542 def clear_error!; @error = nil; end
543 def has_errors?; !@error.nil?; end
545 def method_missing m, *a, &b; __pass m, *a, &b end
547 def id; __pass :id; end
548 def to_s; __pass :to_s; end
549 def to_yaml x; __pass :to_yaml, x; end
550 def is_a? c; @o.is_a? c; end
552 def respond_to?(m, include_private=false)
553 @o.respond_to?(m, include_private)
559 rescue Exception => e
566 ## acts like a hash with an initialization block, but saves any
567 ## newly-created value even upon lookup.
572 ## attr_accessor :val
573 ## def initialize; @val = 0 end
576 ## h = Hash.new { C.new }
581 ## h2 = SavingHash.new { C.new }
586 ## important note: you REALLY want to use #member? to test existence,
587 ## because just checking h[anything] will always evaluate to true
588 ## (except for degenerate constructor blocks that return nil or false)
596 @hash[k] ||= @constructor.call(k)
599 defer_all_other_method_calls_to :hash
602 class OrderedHash < Hash
603 alias_method :store, :[]=
604 alias_method :each_pair, :each
609 a.each { |k, v| self[k] = v }
613 @keys << key unless member?(key)
617 def values; keys.map { |k| self[k] } end
618 def index key; @keys.index key end
625 def each; @keys.each { |k| yield k, self[k] } end
628 ## easy thread-safe class for determining who's the "winner" in a race (i.e.
629 ## first person to hit the finish line
637 @m.synchronize { !@over && @over = true }
642 def self.easy_decode target, charset, text
643 return text if charset =~ /^(x-unknown|unknown[-_ ]?8bit|ascii[-_ ]?7[-_ ]?bit)$/i
644 charset = case charset
645 when /UTF[-_ ]?8/i then "utf-8"
646 when /(iso[-_ ])?latin[-_ ]?1$/i then "ISO-8859-1"
647 when /iso[-_ ]?8859[-_ ]?15/i then 'ISO-8859-15'
648 when /unicode[-_ ]1[-_ ]1[-_ ]utf[-_]7/i then "utf-7"
653 Iconv.iconv(target + "//IGNORE", charset, text + " ").join[0 .. -2]
654 rescue Errno::EINVAL, Iconv::InvalidEncoding, Iconv::IllegalSequence => e
655 Redwood::log "warning: error (#{e.class.name}) decoding text from #{charset} to #{target}: #{text[0 ... 20]}"