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returns a list of addrinfo objects as an array.

This method converts nodename (hostname) and service (port) to addrinfo. Since the conversion is not unique, the result is a list of addrinfo objects.

nodename or service can be nil if no conversion intended.

family, socktype and protocol are hint for preferred protocol. If the result will be used for a socket with SOCK_STREAM, SOCK_STREAM should be specified as socktype. If so, Addrinfo.getaddrinfo returns addrinfo list appropriate for SOCK_STREAM. If they are omitted or nil is given, the result is not restricted.

Similarly, PF_INET6 as family restricts for IPv6.

flags should be bitwise OR of Socket::AI_??? constants such as follows. Note that the exact list of the constants depends on OS.

AI_PASSIVE      Get address to use with bind()
AI_CANONNAME    Fill in the canonical name
AI_NUMERICHOST  Prevent host name resolution
AI_NUMERICSERV  Prevent service name resolution
AI_V4MAPPED     Accept IPv4-mapped IPv6 addresses
AI_ALL          Allow all addresses
AI_ADDRCONFIG   Accept only if any address is assigned

Note that socktype should be specified whenever application knows the usage of the address. Some platform causes an error when socktype is omitted and servname is specified as an integer because some port numbers, 512 for example, are ambiguous without socktype.

Addrinfo.getaddrinfo("www.kame.net", 80, nil, :STREAM)
#=> [#<Addrinfo: 203.178.141.194:80 TCP (www.kame.net)>,
#    #<Addrinfo: [2001:200:dff:fff1:216:3eff:feb1:44d7]:80 TCP (www.kame.net)>]

returns nodename and service as a pair of strings. This converts struct sockaddr in addrinfo to textual representation.

flags should be bitwise OR of Socket::NI_??? constants.

Addrinfo.tcp("127.0.0.1", 80).getnameinfo #=> ["localhost", "www"]

Addrinfo.tcp("127.0.0.1", 80).getnameinfo(Socket::NI_NUMERICSERV)
#=> ["localhost", "80"]

Closes the SOCKS connection.

Lookups host information by hostname.

TCPSocket.gethostbyname("localhost")
#=> ["localhost", ["hal"], 2, "127.0.0.1"]

Returns the remote address as an array which contains address_family and unix_path.

Example

serv = UNIXServer.new("/tmp/sock")
c = UNIXSocket.new("/tmp/sock")
p c.peeraddr #=> ["AF_UNIX", "/tmp/sock"]

Closes strio. The strio is unavailable for any further data operations; an IOError is raised if such an attempt is made.

Returns true if strio is completely closed, false otherwise.

See IO#getc.

Pushes back one character (passed as a parameter) onto strio such that a subsequent buffered read will return it. There is no limitation for multiple pushbacks including pushing back behind the beginning of the buffer string.

See IO#ungetbyte

See IO#getbyte.

See IO#gets.

Set the scan pointer to the end of the string and clear matching data.

Returns the byte position of the scan pointer. In the ‘reset’ position, this value is zero. In the ‘terminated’ position (i.e. the string is exhausted), this value is the bytesize of the string.

In short, it’s a 0-based index into bytes of the string.

s = StringScanner.new('test string')
s.pos               # -> 0
s.scan_until /str/  # -> "test str"
s.pos               # -> 8
s.terminate         # -> #<StringScanner fin>
s.pos               # -> 11

Set the byte position of the scan pointer.

s = StringScanner.new('test string')
s.pos = 7            # -> 7
s.rest               # -> "ring"

Scans one character and returns it. This method is multibyte character sensitive.

s = StringScanner.new("ab")
s.getch           # => "a"
s.getch           # => "b"
s.getch           # => nil

$KCODE = 'EUC'
s = StringScanner.new("\244\242")
s.getch           # => "\244\242"   # Japanese hira-kana "A" in EUC-JP
s.getch           # => nil

Equivalent to get_byte. This method is obsolete; use get_byte instead.

Returns current codepage.

WIN32OLE.codepage # => WIN32OLE::CP_ACP

Sets current codepage. The WIN32OLE.codepage is initialized according to Encoding.default_internal. If Encoding.default_internal is nil then WIN32OLE.codepage is initialized according to Encoding.default_external.

WIN32OLE.codepage = WIN32OLE::CP_UTF8
WIN32OLE.codepage = 65001

Returns current locale id (lcid). The default locale is WIN32OLE::LOCALE_SYSTEM_DEFAULT.

lcid = WIN32OLE.locale

Sets current locale id (lcid).

WIN32OLE.locale = 1033 # set locale English(U.S)
obj = WIN32OLE_VARIANT.new("$100,000", WIN32OLE::VARIANT::VT_CY)

Runs the early binding method to set property. The 1st argument specifies dispatch ID, the 2nd argument specifies the array of arguments, the 3rd argument specifies the array of the type of arguments.

excel = WIN32OLE.new('Excel.Application')
excel._setproperty(558, [true], [WIN32OLE::VARIANT::VT_BOOL]) # same effect as excel.visible = true

Sets property of OLE object. When you want to set property with argument, you can use this method.

excel = WIN32OLE.new('Excel.Application')
excel.Visible = true
book = excel.workbooks.add
sheet = book.worksheets(1)
sheet.setproperty('Cells', 1, 2, 10) # => The B1 cell value is 10.

sets event handler object. If handler object has onXXX method according to XXX event, then onXXX method is called when XXX event occurs.

If handler object has method_missing and there is no method according to the event, then method_missing called and 1-st argument is event name.

If handler object has onXXX method and there is block defined by WIN32OLE_EVENT#on_event(‘XXX’){}, then block is executed but handler object method is not called when XXX event occurs.

class Handler
  def onStatusTextChange(text)
    puts "StatusTextChanged"
  end
  def onPropertyChange(prop)
    puts "PropertyChanged"
  end
  def method_missing(ev, *arg)
    puts "other event #{ev}"
  end
end

handler = Handler.new
ie = WIN32OLE.new('InternetExplorer.Application')
ev = WIN32OLE_EVENT.new(ie)
ev.on_event("StatusTextChange") {|*args|
  puts "this block executed."
  puts "handler.onStatusTextChange method is not called."
}
ev.handler = handler

returns handler object.

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