Class: File

Inherits:
Object
  • Object
show all
Defined in:
lib/common/ext/file.rb

Constant Summary collapse

SLASH = 
'/'

Class Method Summary collapse

Class Method Details

.add_prefix(prefix, file) ⇒ Object 



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# File 'lib/common/ext/file.rb', line 66

def self.add_prefix(prefix, file)
  if not prefix or is_absolute?(file)
    file
  else
    prefix + file
  end
end

.is_absolute?(filename) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/common/ext/file.rb', line 7

def self.is_absolute?(filename)
  filename[0] == SLASH or filename[1] == ':'
end

.rel_from_to_project(from, to, endWithSlash = true) ⇒ Object

seems both are rel or both are abs in all cases



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# File 'lib/common/ext/file.rb', line 12

def self.rel_from_to_project(from,to,endWithSlash = true)

  return nil if from.nil? or to.nil?
  
  toSplitted = to.split('/')
  fromSplitted = from.split('/')
  
  max = [toSplitted.length, fromSplitted.length].min
  
  
  return nil if max < 1
  
  i = 0
  
  # path letter in windows may be case different

  toIsWindowsAbs = false
  if toSplitted[0].length > 1 and fromSplitted[0].length > 1
    toIsWindowsAbs = toSplitted[0][1] == ':'
    i = 1  if toIsWindowsAbs and fromSplitted[0][1] == ':' and toSplitted[0][0].downcase == fromSplitted[0][0].downcase
  end
  
  if (toIsWindowsAbs and i==0)
    res = to
    res += "/" if endWithSlash 
    return res    
  end
  
  while i < max
      break if toSplitted[i] != fromSplitted[i] 
    i += 1
  end
  j = i
  
  res = []
  while i < fromSplitted.length
    res << ".."
    i += 1
  end
  
  while j < toSplitted.length
    res << toSplitted[j]
    j += 1
  end
  
  if res.length == 0
    return ""
  end
  
  res = res.join('/')
  res += "/" if endWithSlash 
  res
end

.which(cmd) ⇒ Object 



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# File 'lib/common/ext/file.rb', line 74

def self.which(cmd)
  return "" if not cmd
  exts = ENV['PATHEXT'] ? ENV['PATHEXT'].split(';') : ['']
  ENV['PATH'].split(File::PATH_SEPARATOR).each do |path|
    exts.each { |ext|
      exe = File.join(path, "#{cmd}#{ext}")
      if File.executable?(exe) && !File.directory?(exe)
        return File.dirname(exe.gsub(/[\\]/,'/'))
      end 
    }
  end
  return ""
end