Module: Misc

Defined in:
lib/rbbt/util/misc.rb

Defined Under Namespace

Classes: FieldNotFoundError

Constant Summary collapse

COLOR_LIST = 
%w(#BC80BD #CCEBC5 #FFED6F #8DD3C7 #FFFFB3 #BEBADA #FB8072 #80B1D3 #FDB462 #B3DE69 #FCCDE5 #D9D9D9)
Log2Multiplier = 
1.0 / Math.log(2.0)
ARRAY_MAX_LENGTH = 
1000
STRING_MAX_LENGTH = 
ARRAY_MAX_LENGTH * 10
IUPAC2BASE = 
{
  "A" => ["A"],
  "C" => ["C"],
  "G" => ["G"],
  "T" => ["T"],
  "U" => ["U"],
  "R" => "A or G".split(" or "),
  "Y" => "C or T".split(" or "),
  "S" => "G or C".split(" or "),
  "W" => "A or T".split(" or "),
  "K" => "G or T".split(" or "),
  "M" => "A or C".split(" or "),
  "B" => "C or G or T".split(" or "),
  "D" => "A or G or T".split(" or "),
  "H" => "A or C or T".split(" or "),
  "V" => "A or C or G".split(" or "),
  "N" => %w(A C T G),
}
BASE2COMPLEMENT = 
{
  "A" => "T",
  "C" => "G",
  "G" => "C",
  "T" => "A",
  "U" => "A",
}
THREE_TO_ONE_AA_CODE = 
{
  "ala" =>   "A",
  "arg" =>   "R",
  "asn" =>   "N",
  "asp" =>   "D",
  "cys" =>   "C",
  "glu" =>   "E",
  "gln" =>   "Q",
  "gly" =>   "G",
  "his" =>   "H",
  "ile" =>   "I",
  "leu" =>   "L",
  "lys" =>   "K",
  "met" =>   "M",
  "phe" =>   "F",
  "pro" =>   "P",
  "ser" =>   "S",
  "thr" =>   "T",
  "trp" =>   "W",
  "tyr" =>   "Y",
  "val" =>   "V"
}
LOCK_REPO_SERIALIZER = 
Marshal
HASH2MD5_MAX_STRING_LENGTH = 
1000
HASH2MD5_MAX_ARRAY_LENGTH = 
100

Class Method Summary collapse

Class Method Details

.add_defaults(options, defaults = {}) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 1010

def self.add_defaults(options, defaults = {})
  case
  when Hash === options
    new_options = options.dup
  when String === options
    new_options = string2hash options
  else
    raise "Format of '#{options.inspect}' not understood. It should be a hash"
  end

  defaults.each do |key, value|
    next if options.include? key

    new_options[key] = value 
  end

  new_options
end

.array2hash(array, default = nil) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 637

def self.array2hash(array, default = nil)
  hash = {}
  array.each do |key, value|
    value = default.dup if value.nil? and not default.nil?
    hash[key] = value
  end
  hash
end

.benchmark(repeats = 1) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 669

def self.benchmark(repeats = 1)
  require 'benchmark'
  res = nil
  begin
    measure = Benchmark.measure do
      repeats.times do
        res = yield
      end
    end
    puts "Benchmark for #{ repeats } repeats"
    puts measure
  rescue Exception
    puts "Benchmark aborted"
    raise $!
  end
  res
end

.binary_include?(array, elem) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rbbt/util/misc.rb', line 610

def self.binary_include?(array, elem)
  upper = array.size - 1
  lower = 0

  return -1 if upper < lower

  while(upper >= lower) do
    idx = lower + (upper - lower) / 2
    value = array[idx]

    case elem <=> value
    when 0
      return true
    when -1
      upper = idx - 1
    when 1
      lower = idx + 1
    else
      raise "Cannot compare #{[elem.inspect, value.inspect] * " with "}"
    end
  end

  return false
end

.collapse_ranges(ranges) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 87

def self.collapse_ranges(ranges)
  processed = []
  last = nil
  ranges.sort_by{|range| range.begin }.each do |range|
    if last.nil? or range.begin > last
      processed << range
      last = range.end
    else
      new_processed = []
      processed.each do |processed_range|
        if processed_range.end < range.begin
          new_processed << processed_range
        else
          eend = [range.end, processed_range.end].max
          new_processed << (processed_range.begin..eend)
          break
        end
      end
      processed = new_processed
      last = range.end if range.end > last
    end
  end

  processed
end

.colors_for(list) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 70

def self.colors_for(list)
  unused = COLOR_LIST.dup

  used = {}
  colors = list.collect do |elem|
    if used.include? elem
      used[elem]
    else
      color = unused.shift
      used[elem]=color
      color
    end
  end

  [colors, used]
end

.common_path(dir, file) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 932

def self.common_path(dir, file)
  file = File.expand_path file
  dir = File.expand_path dir

  return true if file == dir
  while File.dirname(file) != file
    file = File.dirname(file)
    return true if file == dir
  end

  return false
end

.consolidate(list) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 327

def self.consolidate(list)
  list.inject(nil){|acc,e|
    if acc.nil?
      acc = e
    else
      acc.concat e
      acc
    end
  }
end

.correct_icgc_mutation(pos, ref, mut_str) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 25

def self.correct_icgc_mutation(pos, ref, mut_str)
  mut = mut_str
  mut = '-' * (mut_str.length - 1) if mut =~/^-[ACGT]/
    mut = "+" << mut if ref == '-'
  [pos, [mut]]
end

.correct_vcf_mutation(pos, ref, mut_str) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 32

def self.correct_vcf_mutation(pos, ref, mut_str)
  muts = mut_str.nil? ? [] : mut_str.split(',')

  while ref.length >= 1 and muts.reject{|m| m[0] == ref[0]}.empty?
    ref = ref[1..-1]
    pos = pos + 1
    muts = muts.collect{|m| m[1..-1]}
  end

  muts = muts.collect do |m|
    case
    when ref.empty?
      "+" << m
    when (m.length < ref.length and (m.empty? or ref.index(m)))
      "-" * (ref.length - m.length)
    when (ref.length == 1 and m.length == 1)
      m
    else
      Log.debug{"Cannot understand: #{[ref, m]} (#{ muts })"}
      '-' * ref.length + m
    end
  end

  [pos, muts]
end

.counts(array) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 370

def self.counts(array)
  counts = {}
  array.each do |e|
    counts[e] ||= 0
    counts[e] += 1
  end

  counts
end

.digest(text) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 1029

def self.digest(text)
  Digest::MD5.hexdigest(text)
end

.divide(array, num) ⇒ Object

Divides the array into num chunks of the same size by placing one element in each chunk iteratively.



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# File 'lib/rbbt/util/misc.rb', line 1259

def self.divide(array, num)
  chunks = []
  num.to_i.times do chunks << [] end
  array.each_with_index{|e, i|
    c = i % num
    chunks[c] << e
  }
  chunks
end

.do_once(&block) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 759

def self.do_once(&block)
  return nil if $__did_once
  $__did_once = true
  yield
  nil
end

.ensembl_server(organism) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 268

def self.ensembl_server(organism)
  date = organism.split("/")[1]
  if date.nil?
    "www.ensembl.org"
  else
    "#{ date }.archive.ensembl.org"
  end
end

.env_add(var, value, sep = ":", prepend = true) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 659

def self.env_add(var, value, sep = ":", prepend = true)
  ENV[var] ||= ""
  return if ENV[var] =~ /(#{sep}|^)#{Regexp.quote value}(#{sep}|$)/
    if prepend
      ENV[var] = value + sep + ENV[var]
    else
      ENV[var] += sep + ENV[var]
    end
end

.fast_align(reference, sequence) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 448

def self.fast_align(reference, sequence)
  require 'narray'
  init_gap = -1
  gap = -2
  diff = -2
  same = 2

  cols = sequence.length + 1
  rows = reference.length + 1

  a = NArray.int(cols, rows)


  for spos in 0..cols-1 do a[spos, 0] = spos * init_gap end
  for rpos in 0..rows-1 do a[0, rpos] = rpos * init_gap end

  spos = 1
  while spos < cols do
    rpos = 1
    while rpos < rows do
      match = a[spos-1,rpos-1] + (sequence[spos-1] != reference[rpos-1] ? diff : same)
      skip_sequence = a[spos-1,rpos] + gap
      skip_reference = a[spos,rpos-1] + gap
      a[spos,rpos] = [match, skip_sequence, skip_reference].max
      rpos += 1
    end
    spos += 1
  end

  start = Misc.max(a[-1,0..rows-1])
  start_pos = a[-1,0..rows-1].to_a.index start

  ref = ''
  seq = ''
  rpos = start_pos
  spos = cols - 1

  while spos > 0 and rpos > 0
    score = a[spos,rpos]
    score_match = a[spos-1,rpos-1]
    score_skip_reference = a[spos,rpos-1]
    score_skip_sequence = a[spos-1,rpos]

    case
    when score == score_match + (sequence[spos-1] != reference[rpos-1] ? diff : same)
      ref << reference[rpos-1]
      seq << sequence[spos-1]
      spos -= 1
      rpos -= 1
    when score == score_skip_reference + gap
      ref << reference[rpos-1]
      seq << '-'
      rpos -= 1
    when score == score_skip_sequence + gap
      seq << sequence[spos-1]
      ref << '-'
      spos -= 1
    else
      raise "stop"
    end
  end

  while (rpos > 0)
    ref << reference[rpos-1]
    seq = seq << '-'
    rpos -= 1    
  end

  while (spos > 0)
    seq << sequence[spos-1]
    ref = ref + '-'
    spos -= 1
  end
  
  [ref.reverse + reference[start_pos..-1], seq.reverse + '-' * (rows - start_pos - 1)]
end

.field_position(fields, field, quiet = false) ⇒ Object

Raises:



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# File 'lib/rbbt/util/misc.rb', line 1248

def self.field_position(fields, field, quiet = false)
  return field if Integer === field or Range === field
  raise FieldNotFoundError, "Field information missing" if fields.nil? && ! quiet
  fields.each_with_index{|f,i| return i if f == field}
  field_re = Regexp.new /^#{field}$/i
  fields.each_with_index{|f,i| return i if f =~ field_re}
  raise FieldNotFoundError, "Field #{ field.inspect } was not found" unless quiet
end

.filename?(string) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rbbt/util/misc.rb', line 277

def self.filename?(string)
  String === string and string.length > 0 and string.length < 250 and File.exists?(string)
end

.fingerprint(obj) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 207

def self.fingerprint(obj)
  case obj
  when nil
    "nil"
  when Symbol
    ":" << obj.to_s
  when String
    if obj.length > 100
      "'" << obj[0..20-1] << "<...#{obj.length}...>" << obj[-10..-1] << " " << "'"
    else 
      "'" << obj << "'"
    end
  when Array
    if (length = obj.length) > 10
      "[#{length}-" <<  (obj.values_at(0,1, length / 2, -2, -1).collect{|e| fingerprint(e)} * ",") << "]"
    else
      "[" << (obj.collect{|e| fingerprint(e) } * ",") << "]"
    end
  when TSV
    obj.with_unnamed do
      "TSV:{"<< fingerprint(obj.all_fields|| []).inspect << ";" << fingerprint(obj.keys).inspect << "}"
    end
  when Hash
    if obj.length > 10
      "H:{"<< fingerprint(obj.keys) << ";" << fingerprint(obj.values) << "}"
    else
      new = "{"
      obj.each do |k,v|
        new << k.to_s << '=>' << fingerprint(v) << ' '
      end
      new << "}"
    end
  else
    obj.to_s
  end
end

.fixascii(string) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 975

def self.fixascii(string)
  if string.respond_to?(:encode)
    self.fixutf8(string).encode("ASCII-8BIT") 
  else
    string
  end
end

.fixutf8(string) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 963

def self.fixutf8(string)
  return string if (string.respond_to? :valid_encoding? and string.valid_encoding?) or
  (string.respond_to? :valid_encoding and string.valid_encoding)
  if string.respond_to?(:encode)
    string.encode("UTF-16BE", :invalid => :replace, :undef => :replace, :replace => "?").encode('UTF-8')
  else
    require 'iconv'
    @@ic ||= Iconv.new('UTF-8//IGNORE', 'UTF-8')
    @@ic.iconv(string)
  end
end

.GET_params2hash(string) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 795

def self.GET_params2hash(string)
  hash = {}
  string.split('&').collect{|item|
    key, value = item.split("=").values_at 0, 1
    hash[key] = value.nil? ? "" : CGI.unescape(value)
  }
  hash
end

.google_venn(list1, list2, list3, name1 = nil, name2 = nil, name3 = nil, total = nil) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 290

def self.google_venn(list1, list2, list3, name1 = nil, name2 = nil, name3 = nil, total = nil)
  name1 ||= "list 1"
  name2 ||= "list 2"
  name3 ||= "list 3"

  sizes = [list1, list2, list3, list1 & list2, list1 & list3, list2 & list3, list1 & list2 & list3].collect{|l| l.length}

  total = total.length if Array === total

  label = "#{name1}: #{sizes[0]} (#{name2}: #{sizes[3]}, #{name3}: #{sizes[4]})"
  label << "|#{name2}: #{sizes[1]} (#{name1}: #{sizes[3]}, #{name3}: #{sizes[5]})"
    label << "|#{name3}: #{sizes[2]} (#{name1}: #{sizes[4]}, #{name2}: #{sizes[5]})"
    if total
      label << "| INTERSECTION: #{sizes[6]} TOTAL: #{total}"
    else
      label << "| INTERSECTION: #{sizes[6]}"
    end

  max = total || sizes.max
  sizes = sizes.collect{|v| (v.to_f/max * 100).to_i.to_f / 100}
  url = "https://chart.googleapis.com/chart?cht=v&chs=500x300&chd=t:#{sizes * ","}&chco=FF6342,ADDE63,63C6DE,FFFFFF&chdl=#{label}"
end

.hash2GET_params(hash) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 804

def self.hash2GET_params(hash)
  hash.sort_by{|k,v| k.to_s}.collect{|k,v| 
    next unless %w(Symbol String Float Fixnum Integer TrueClass FalseClass Module Class Object Array).include? v.class.to_s
    v = case 
        when Symbol === v
          v.to_s
        when Array === v
          v * ","
        else
          CGI.escape(v.to_s)
        end
    [ Symbol === k ? k.to_s : k,  v] * "="
  }.compact * "&"
end

.hash2md5(hash) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 1035

def self.hash2md5(hash)
  str = ""
  keys = hash.keys
  keys = keys.clean_annotations if keys.respond_to? :clean_annotations
  keys = keys.sort_by{|k| k.to_s}

  if hash.respond_to? :unnamed
    unnamed = hash.unnamed
    hash.unnamed = true 
  end
  keys.each do |k|
    next if k == :monitor or k == "monitor" or k == :in_situ_persistence or k == "in_situ_persistence"
    v = hash[k]
    case
    when TrueClass === v
      str << k.to_s << "=>true" 
    when FalseClass === v
      str << k.to_s << "=>false" 
    when Hash === v
      str << k.to_s << "=>" << hash2md5(v)
    when Symbol === v
      str << k.to_s << "=>" << v.to_s
    when (String === v and v.length > HASH2MD5_MAX_STRING_LENGTH)
      str << k.to_s << "=>" << v[0..HASH2MD5_MAX_STRING_LENGTH] << "; #{ v.length }"
    when String === v
      str << k.to_s << "=>" << v
    when (Array === v and v.length > HASH2MD5_MAX_ARRAY_LENGTH)
      str << k.to_s << "=>[" << v[0..HASH2MD5_MAX_ARRAY_LENGTH] * "," << "; #{ v.length }]"
    when Array === v
      str << k.to_s << "=>[" << v * "," << "]"
    else
      v_ins = v.inspect

      case
      when v_ins =~ /:0x0/
        str << k.to_s << "=>" << v_ins.sub(/:0x[a-f0-9]+@/,'')
      else
        str << k.to_s << "=>" << v_ins
      end

    end

    str << "_" << hash2md5(v.info) if defined? Annotated and Annotated === v
  end
  hash.unnamed = unnamed if hash.respond_to? :unnamed

  if str.empty?
    ""
  else
    digest(str)
  end
end

.hash2string(hash) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 787

def self.hash2string(hash)
  hash.sort_by{|k,v| k.to_s}.collect{|k,v| 
    next unless %w(Symbol String Float Fixnum Integer TrueClass FalseClass Module Class Object).include? v.class.to_s
    [ Symbol === k ? ":" << k.to_s : k,
      Symbol === v ? ":" << v.to_s : v] * "="
  }.compact * "#"
end

.hash_to_html_tag_attributes(hash) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 819

def self.hash_to_html_tag_attributes(hash)
  return "" if hash.nil? or hash.empty?
  hash.collect{|k,v| 
    case 
    when (k.nil? or v.nil? or (String === v and v.empty?))
      nil
    when Array === v
      [k,"'" << v * " " << "'"] * "="
    when String === v
      [k,"'" << v << "'"] * "="
    when Symbol === v
      [k,"'" << v.to_s << "'"] * "="
    when TrueClass === v
      [k,"'" << v.to_s << "'"] * "="
    when (Fixnum === v or Float === v)
      [k,"'" << v.to_s << "'"] * "="
    else
      nil
    end
  }.compact * " "
end

.hostname ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 867

def self.hostname
  @hostanem ||= `hostname`.strip
end

.html_tag(tag, content = nil, params = {}) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 841

def self.html_tag(tag, content = nil, params = {})
  attr_str = hash_to_html_tag_attributes(params)
  attr_str = " " << attr_str if String === attr_str and attr_str != ""
  html = if content.nil?
    "<#{ tag }#{attr_str}/>"
  else
    "<#{ tag }#{attr_str}>#{ content }</#{ tag }>"
  end

  html
end

.humanize(value, options = {}) ⇒ Object

source: gist.github.com/ekdevdes/2450285 author: Ethan Kramer (github.com/ekdevdes)



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# File 'lib/rbbt/util/misc.rb', line 1300

def self.humanize(value, options = {})
  if options.empty?
    options[:format] = :sentence
  end

  values = []
  values = value.split('_')
  values.each_index do |index|
    # lower case each item in array
    # Miguel Vazquez edit: Except for acronyms
    values[index].downcase! unless values[index].match(/[a-zA-Z][A-Z]/)
  end
  if options[:format] == :allcaps
    values.each do |value|
      value.capitalize!
    end

    if options.empty?
      options[:seperator] = " "
    end

    return values.join " "
  end

  if options[:format] == :class
    values.each do |value|
      value.capitalize!
    end

    return values.join ""
  end

  if options[:format] == :sentence
    values[0].capitalize! unless values[0].match(/[a-zA-Z][A-Z]/)

    return values.join " "
  end

  if options[:format] == :nocaps
    return values.join " "
  end
end

.in_dir(dir) ⇒ Object

WARN: probably not thread safe…



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# File 'lib/rbbt/util/misc.rb', line 946

def self.in_dir(dir)
  old_pwd = FileUtils.pwd
  res = nil
  begin
    FileUtils.mkdir_p dir unless File.exists? dir
    FileUtils.cd dir
    res = yield
  ensure
    FileUtils.cd old_pwd
  end
  res
end

.insist(times = 3, sleep = nil) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 770

def self.insist(times = 3, sleep = nil)
  try = 0
  begin
    yield
  rescue
    Log.warn("Insisting after exception: #{$!.message}")
    sleep sleep if sleep
    try += 1
    retry if try < times
    raise $!
  end
end

.intersect_sorted_arrays(a1, a2) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 559

def self.intersect_sorted_arrays(a1, a2)
  e1, e2 = a1.shift, a2.shift
  intersect = []
  while true
    break if e1.nil? or e2.nil?
    case e1 <=> e2
    when 0
      intersect << e1
      e1, e2 = a1.shift, a2.shift
    when -1
      e1 = a1.shift while not e1.nil? and e1 < e2
    when 1
      e2 = a2.shift
      e2 = a2.shift while not e2.nil? and e2 < e1
    end
  end
  intersect
end

.is_filename?(string) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rbbt/util/misc.rb', line 529

def self.is_filename?(string)
  return true if string.respond_to? :exists
  return true if String === string and string.length < 265 and File.exists? string
  return false
end

.IUPAC_to_base(iupac) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 525

def self.IUPAC_to_base(iupac)
  IUPAC2BASE[iupac]
end

.lock(file, *args) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 871

def self.lock(file, *args)
  return yield file, *args if file.nil?
  FileUtils.mkdir_p File.dirname(File.expand_path(file)) unless File.exists?  File.dirname(File.expand_path(file))

  res = nil

  lockfile = Lockfile.new(File.expand_path(file + '.lock'))

  begin
    if File.exists? lockfile and
      Misc.hostname == (info = YAML.load_file(lockfile))["host"] and 
      info["pid"] and not Misc.pid_exists?(info["pid"])

      Log.info("Removing lockfile: #{lockfile}. This pid #{Process.pid}. Content: #{info.inspect}")
      FileUtils.rm lockfile 
    end
  rescue
    Log.warn("Error checking lockfile #{lockfile}: #{$!.message}. Removing. Content: #{begin Open.read(lockfile) rescue "Could not open file" end}")
    FileUtils.rm lockfile if File.exists? lockfile 
  end

  lockfile.lock do 
    res = yield file, *args
  end

  res
end

.lock_in_repo(repo, key, *args) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 901

def self.lock_in_repo(repo, key, *args)
  return yield file, *args if repo.nil? or key.nil?

  lock_key = "lock-" << key

  begin
    if repo[lock_key] and
      Misc.hostname == (info = LOCK_REPO_SERIALIZER.load(repo[lock_key]))["host"] and 
      info["pid"] and not Misc.pid_exists?(info["pid"])

      Log.info("Removing lockfile: #{lock_key}. This pid #{Process.pid}. Content: #{info.inspect}")
      repo.out lock_key 
    end
  rescue
    Log.warn("Error checking lockfile #{lock_key}: #{$!.message}. Removing. Content: #{begin repo[lock_key] rescue "Could not open file" end}")
    repo.out lock_key if repo.include? lock_key
  end

  while repo[lock_key]
    sleep 1
  end
  
  repo[lock_key] = LOCK_REPO_SERIALIZER.dump({:hostname => Misc.hostname, :pid => Process.pid})

  res = yield lock_key, *args

  repo.delete lock_key

  res
end

.log2(x) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 160

def self.log2(x)
  Math.log(x) * Log2Multiplier
end

.max(list) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 281

def self.max(list)
  max = nil
  list.each do |v|
    next if v.nil?
    max = v if max.nil? or v > max
  end
  max
end

.mean(list) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 317

def self.mean(list)
  sum(list) / list.compact.length
end

.memprof ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 743

def self.memprof
  require 'memprof'
  Memprof.start
  begin
    res = yield
  rescue Exception
    puts "Profiling aborted"
    raise $!
  ensure
    Memprof.stop
    print Memprof.stats
  end

  res
end

.merge_sorted_arrays(a1, a2) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 578

def self.merge_sorted_arrays(a1, a2)
  e1, e2 = a1.shift, a2.shift
  new = []
  while true
    case
    when (e1 and e2)
      case e1 <=> e2
      when 0
        new << e1 
        e1, e2 = a1.shift, a2.shift
      when -1
        new << e1
        e1 = a1.shift
      when 1
        new << e2
        e2 = a2.shift
      end
    when e2
      new << e2
      new.concat a2
      break
    when e1
      new << e1
      new.concat a1
      break
    else
      break
    end
  end
  new
end

.ordered_divide(array, num) ⇒ Object

Divides the array into chunks of num same size by placing one element in each chunk iteratively.



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# File 'lib/rbbt/util/misc.rb', line 1271

def self.ordered_divide(array, num)
  last = array.length - 1
  chunks = []
  current = 0
  while current <= last
    next_current = [last, current + num - 1].min
    chunks << array[current..next_current]
    current = next_current + 1
  end
  chunks
end

.path_relative_to(basedir, path) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 853

def self.path_relative_to(basedir, path)
  path = File.expand_path(path)
  basedir = File.expand_path(basedir)

  case
  when path == basedir
    "."
  when path =~ /#{Regexp.quote basedir}\/(.*)/
    return $1
  else
    return nil
  end
end

.pid_exists?(pid) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rbbt/util/misc.rb', line 58

def self.pid_exists?(pid)
  return false if pid.nil?
  begin
    Process.getpgid(pid.to_i)
    true
  rescue Errno::ESRCH
    false
  end
end

.positional2hash(keys, *values) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 338

def self.positional2hash(keys, *values)
  if Hash === values.last
    extra = values.pop
    inputs = Misc.zip2hash(keys, values)
    inputs.delete_if{|k,v| v.nil? or (String === v and v.empty?)}
    inputs = Misc.add_defaults inputs, extra
    inputs.delete_if{|k,v| not keys.include?(k) and not (Symbol === k ? keys.include?(k.to_s) : keys.include?(k.to_sym))}
    inputs
  else
    Misc.zip2hash(keys, values)
  end
end

.prepare_entity(entity, field, options = {}) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 164

def self.prepare_entity(entity, field, options = {})
  return entity unless defined? Entity
  return entity unless String === entity or Array === entity
  options ||= {}

  dup_array = options.delete :dup_array

  if Annotated === field or Entity.respond_to?(:formats) and Entity.formats.include? field
    params = options.dup

    params[:format] ||= params.delete "format"
    params.merge!(:format => field) unless params.include?(:format) and not ((f = params[:format]).nil? or (String === f and f.empty?))

    mod = Entity === field ? field : Entity.formats[field]
    entity = mod.setup(
      ((entity.frozen? and not entity.nil?) ? entity.dup : ((Array === entity and dup_array) ? entity.collect{|e| e.nil? ? e : e.dup} : entity) ),
      params
    ) 
  end

  entity
end

.process_options(hash, *keys) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 1088

def self.process_options(hash, *keys)
  if keys.length == 1
    hash.include?(keys.first.to_sym) ? hash.delete(keys.first.to_sym) : hash.delete(keys.first.to_s) 
  else
    keys.collect do |key| hash.include?(key.to_sym) ? hash.delete(key.to_sym) : hash.delete(key.to_s) end
  end
end

.process_to_hash(list) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 654

def self.process_to_hash(list)
  result = yield list
  zip2hash(list, result)
end

.profile(options = {}) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 726

def self.profile(options = {})
  require 'ruby-prof'
  RubyProf.start
  begin
    res = yield
  rescue Exception
    puts "Profiling aborted"
    raise $!
  ensure
    result = RubyProf.stop
    printer = RubyProf::FlatPrinter.new(result)
    printer.print(STDOUT, options)
  end

  res
end

.profile_graph(options = {}) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 708

def self.profile_graph(options = {})
  require 'ruby-prof'
  RubyProf.start
  begin
    res = yield
  rescue Exception
    puts "Profiling aborted"
    raise $!
  ensure
    result = RubyProf.stop
    #result.eliminate_methods!([/annotated_array_clean_/])
    printer = RubyProf::GraphPrinter.new(result)
    printer.print(STDOUT, options)
  end

  res
end

.profile_html(options = {}) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 687

def self.profile_html(options = {})
  require 'ruby-prof'
  RubyProf.start
  begin
    res = yield
  rescue Exception
    puts "Profiling aborted"
    raise $!
  ensure
    result = RubyProf.stop
    printer = RubyProf::MultiPrinter.new(result)
    TmpFile.with_file do |dir|
      FileUtils.mkdir_p dir unless File.exists? dir
      printer.print(:path => dir, :profile => 'profile')
      CMD.cmd("firefox  -no-remote  '#{ dir }'")
    end
  end

  res
end

.proportions(array) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 380

def self.proportions(array)
  total = array.length

  proportions = Hash.new 0

  array.each do |e|
    proportions[e] += 1.0 / total
  end

  class << proportions; self;end.class_eval do
    def to_s
      sort{|a,b| a[1] == b[1] ? a[0] <=> b[0] : a[1] <=> b[1]}.collect{|k,c| "%3d\t%s" % [c, k]} * "\n"
    end
  end

  proportions
end

.pull_keys(hash, prefix) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 1096

def self.pull_keys(hash, prefix)
  new = {}
  hash.keys.each do |key|
    if key.to_s =~ /#{ prefix }_(.*)/
      case
      when String === key
        new[$1] = hash.delete key
      when Symbol === key
        new[$1.to_sym] = hash.delete key
      end
    else
      if key.to_s == prefix.to_s
        new[key] = hash.delete key
      end
    end
  end

  new
end

.random_sample_in_range(total, size) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 118

def self.random_sample_in_range(total, size)
  p = Set.new

  if size > total / 10
    template = (0..total - 1).to_a
    size.times do |i|
      pos = (rand * (total - i)).floor
      if pos == template.length - 1
        v = template.pop
      else
        v, n = template[pos], template[-1]
        template.pop
        template[pos] = n 
      end
      p << v
    end
  else
    size.times do 
      pos = nil
      while pos.nil? 
        pos = (rand * total).floor
        if p.include? pos
          pos = nil
        end
      end
      p << pos
    end
  end
  p
end

.remove_long_items(obj) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 245

def self.remove_long_items(obj)
  case
  when TSV === obj
    remove_long_items((obj.all_fields || []) + obj.keys.sort)
  when (Array === obj and obj.length > ARRAY_MAX_LENGTH)
    remove_long_items(obj[0..ARRAY_MAX_LENGTH-2] << "TRUNCATED at #{ ARRAY_MAX_LENGTH } (#{obj.length})")
  when (Hash === obj and obj.length > ARRAY_MAX_LENGTH)
    remove_long_items(obj.collect.compact[0..ARRAY_MAX_LENGTH-2] << ["TRUNCATED", "at #{ ARRAY_MAX_LENGTH } (#{obj.length})"])
  when (String === obj and obj.length > STRING_MAX_LENGTH)
    obj[0..STRING_MAX_LENGTH-1] << " TRUNCATED at #{STRING_MAX_LENGTH} (#{obj.length})"
  when Hash === obj
    new = {}
    obj.each do |k,v|
      new[k] = remove_long_items(v)
    end
    new
  when Array === obj
    obj.collect do |e| remove_long_items(e) end
  else
    obj
  end
end

.reset_do_once ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 766

def self.reset_do_once
  $__did_once = false
end

.sample(ary, size, replacement = false) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 149

def self.sample(ary, size, replacement = false)
  if ary.respond_to? :sample
    ary.sample size
  else
    total = ary.length
    p = random_sample_in_range(total, size)
    ary.values_at *p
  end
end

.sanitize_filename(filename, length = 254) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 190

def self.sanitize_filename(filename, length = 254)
  if filename.length > length
    if filename =~ /(\..{2,9})$/
      extension = $1
    else
      extension = ''
    end

    post_fix = "--#{filename.length}@#{length}_#{Misc.digest(filename)[0..4]}" + extension

    filename = filename[0..(length - post_fix.length - 1)] << post_fix
  else
    filename
  end
  filename
end

.sd(list) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 321

def self.sd(list)
  return nil if list.length < 3
  mean = mean(list)
  Math.sqrt(list.compact.inject(0.0){|acc,e| d = e - mean; acc += d * d}) / (list.compact.length - 1)
end

.send_email(from, to, subject, message, options = {}) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 351

def self.send_email(from, to, subject, message, options = {})
  IndiferentHash.setup(options)
  options = Misc.add_defaults options, :from_alias => nil, :to_alias => nil, :server => 'localhost', :port => 25, :user => nil, :pass => nil, :auth => :login

  server, port, user, pass, from_alias, to_alias, auth = Misc.process_options options, :server, :port, :user, :pass, :from_alias, :to_alias, :auth

  msg = <<-END_OF_MESSAGE
From: #{from_alias} <#{from}>
To: #{to_alias} <#{to}>
Subject: #{subject}

#{message}
END_OF_MESSAGE

Net::SMTP.start(server, port, server, user, pass, auth) do |smtp|
smtp.send_message msg, from, to
end
end

.sensiblewrite(path, content) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 983

def self.sensiblewrite(path, content)
  Misc.lock path + '.sensible_write' do
    if not File.exists? path
      begin
        tmp_path = path + '.tmp'
        case
        when String === content
          File.open(tmp_path, 'w') do |f|  f.write content  end
        when (IO === content or StringIO === content)
          File.open(tmp_path, 'w') do |f|  while l = content.gets; f.write l; end  end
      else
        File.open(tmp_path, 'w') do |f|  end
      end
      FileUtils.mv tmp_path, path
    rescue Interrupt
      FileUtils.rm_f tmp_path if File.exists? tmp_path
      FileUtils.rm_f path if File.exists? path
      raise "Interrupted (Ctrl-c)"
    rescue Exception
      FileUtils.rm_f tmp_path if File.exists? tmp_path
      FileUtils.rm_f path if File.exists? path
      raise $!
    end
  end
end
end

.snake_case(string) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 1288

def self.snake_case(string)
  return nil if string.nil?
  string = string.to_s if Symbol === string
  string.
    gsub(/([A-Z]{2,})([A-Z][a-z])/,'\1_\2').
    gsub(/([a-z])([A-Z])/,'\1_\2').
    gsub(/\s/,'_').gsub(/[^\w_]/, '').
    split("_").collect{|p| p.match(/[A-Z]{2,}/) ? p : p.downcase } * "_"
end

.sorted_array_hits(a1, a2) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 535

def self.sorted_array_hits(a1, a2)
  e1, e2 = a1.shift, a2.shift
  counter = 0
  match = []
  while true
    break if e1.nil? or e2.nil?
    case e1 <=> e2
    when 0
      match << counter
      e1, e2 = a1.shift, a2.shift
      counter += 1
    when -1
      while not e1.nil? and e1 < e2
        e1 = a1.shift 
        counter += 1
      end
    when 1
      e2 = a2.shift
      e2 = a2.shift while not e2.nil? and e2 < e1
    end
  end
  match
end

.string2const(string) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 1116

def self.string2const(string)
  return nil if string.nil?
  mod = Kernel

  string.to_s.split('::').each do |str|
    mod = mod.const_get str
  end

  mod
end

.string2hash(string) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 1173

def self.string2hash(string)
  options = {}

  string.split('#').each do |str|
    key, sep, value = str.partition "="

    key = key[1..-1].to_sym if key[0] == ":"

    options[key] = true and next if value.empty?
    options[key] = value[1..-1].to_sym and next if value[0] == ":"
    options[key] = Regexp.new(/#{value[1..-2]}/) and next if value[0] == "/" and value[-1] == "/"
    options[key] = value[1..-2] and next if value =~ /^['"].*['"]$/
    options[key] = value.to_i and next if value =~ /^\d+$/
    options[key] = value.to_f and next if value =~ /^\d*\.\d+$/
    options[key] = true and next if value == "true"
    options[key] = false and next if value == "false"
    options[key] = value and next 

    options[key] = begin
                     saved_safe = $SAFE
                     $SAFE = 0
                     eval(value)
                   rescue Exception
                     value
                   ensure
                     $SAFE = saved_safe
                   end
  end

  return options

  options = {}
  string.split(/#/).each do |str|
    if str.match(/(.*)=(.*)/)
      option, value = $1, $2
    else
      option, value = str, true
    end

    option = option.sub(":",'').to_sym if option.chars.first == ':'
    value  = value.sub(":",'').to_sym if String === value and value.chars.first == ':'

    if value == true
      options[option] = option.to_s.chars.first != '!' 
    else
      options[option] = Thread.start do
        $SAFE = 0;
        case 
        when value =~ /^(?:true|T)$/i
          true
        when value =~ /^(?:false|F)$/i
          false
        when Symbol === value
          value
        when (String === value and value =~ /^\/(.*)\/$/)
          Regexp.new /#{$1}/
        else
          begin
            Kernel.const_get value
          rescue
            begin  
              raise if value =~ /[a-z]/ and defined? value
              eval(value) 
            rescue Exception
              value 
            end
          end
        end
      end.value
    end
  end

  options
end

.string2hash_old(string) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 1127

def self.string2hash_old(string)

  options = {}
  string.split(/#/).each do |str|
    if str.match(/(.*)=(.*)/)
      option, value = $1, $2
    else
      option, value = str, true
    end

    option = option.sub(":",'').to_sym if option.chars.first == ':'
    value  = value.sub(":",'').to_sym if String === value and value.chars.first == ':'

    if value == true
      options[option] = option.to_s.chars.first != '!' 
    else
      options[option] = Thread.start do
        $SAFE = 0;
        case 
        when value =~ /^(?:true|T)$/i
          true
        when value =~ /^(?:false|F)$/i
          false
        when Symbol === value
          value
        when (String === value and value =~ /^\/(.*)\/$/)
          Regexp.new /#{$1}/
        else
          begin
            Kernel.const_get value
          rescue
            begin  
              raise if value =~ /[a-z]/ and defined? value
              eval(value) 
            rescue Exception
              value 
            end
          end
        end
      end.value
    end
  end

  options
end

.sum(list) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 313

def self.sum(list)
  list.compact.inject(0.0){|acc,e| acc += e}
end

.to_utf8(string) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 959

def self.to_utf8(string)
  string.encode("UTF-16BE", :invalid => :replace, :undef => :replace, :replace => "?").encode('UTF-8')
end

.total_length(ranges) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 113

def self.total_length(ranges)
  Misc.collapse_ranges(ranges).inject(0) do |total,range| total += range.end - range.begin + 1 end
end

.try3times(&block) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 783

def self.try3times(&block)
  insist(3, &block)
end

.zip2hash(list1, list2) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 646

def self.zip2hash(list1, list2)
  hash = {}
  list1.each_with_index do |e,i|
    hash[e] = list2[i]
  end
  hash
end

.zip_fields(array) ⇒ Object 



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# File 'lib/rbbt/util/misc.rb', line 1283

def self.zip_fields(array)
  return [] if array.empty?
  array[0].zip(*array[1..-1])
end