Accepts an incoming connection using accept(2) after O_NONBLOCK is set for the underlying file descriptor. It returns an accepted TCPSocket for the incoming connection.
require 'socket' serv = TCPServer.new(2202) begin # emulate blocking accept sock = serv.accept_nonblock rescue IO::WaitReadable, Errno::EINTR IO.select([serv]) retry end # sock is an accepted socket.
Refer to Socket#accept for the exceptions that may be thrown if the call to TCPServer#accept_nonblock fails.
TCPServer#accept_nonblock may raise any error corresponding to accept(2) failure, including Errno::EWOULDBLOCK.
If the exception is Errno::EWOULDBLOCK, Errno::EAGAIN, Errno::ECONNABORTED, Errno::EPROTO, it is extended by IO::WaitReadable. So IO::WaitReadable can be used to rescue the exceptions for retrying accept_nonblock.
By specifying a keyword argument exception to false, you can indicate that accept_nonblock should not raise an IO::WaitReadable exception, but return the symbol :wait_readable instead.
Accepts an incoming connection using accept(2) after O_NONBLOCK is set for the underlying file descriptor. It returns an accepted UNIXSocket for the incoming connection.
require 'socket' serv = UNIXServer.new("/tmp/sock") begin # emulate blocking accept sock = serv.accept_nonblock rescue IO::WaitReadable, Errno::EINTR IO.select([serv]) retry end # sock is an accepted socket.
Refer to Socket#accept for the exceptions that may be thrown if the call to UNIXServer#accept_nonblock fails.
UNIXServer#accept_nonblock may raise any error corresponding to accept(2) failure, including Errno::EWOULDBLOCK.
If the exception is Errno::EWOULDBLOCK, Errno::EAGAIN, Errno::ECONNABORTED or Errno::EPROTO, it is extended by IO::WaitReadable. So IO::WaitReadable can be used to rescue the exceptions for retrying accept_nonblock.
By specifying a keyword argument exception to false, you can indicate that accept_nonblock should not raise an IO::WaitReadable exception, but return the symbol :wait_readable instead.
Closes the read end of a StringIO. Will raise an IOError if the strio is not readable.
Closes the write end of a StringIO. Will raise an IOError if the strio is not writeable.
Returns true if strio is not readable, false otherwise.
Returns true if strio is not writable, false otherwise.
Returns the Encoding object that represents the encoding of the file. If strio is write mode and no encoding is specified, returns nil.
Returns the Encoding of the internal string if conversion is specified. Otherwise returns nil.
This method is defined for backward compatibility.
Scans one byte and returns it. This method is not multibyte character sensitive. See also: getch.
s = StringScanner.new('ab') s.get_byte # => "a" s.get_byte # => "b" s.get_byte # => nil $KCODE = 'EUC' s = StringScanner.new("\244\242") s.get_byte # => "\244" s.get_byte # => "\242" s.get_byte # => nil
Defines the constants of OLE Automation server as mod’s constants. The first argument is WIN32OLE object or type library name. If 2nd argument is omitted, the default is WIN32OLE. The first letter of Ruby’s constant variable name is upper case, so constant variable name of WIN32OLE object is capitalized. For example, the ‘xlTop’ constant of Excel is changed to ‘XlTop’ in WIN32OLE. If the first letter of constant variable is not [A-Z], then the constant is defined as CONSTANTS hash element.
module EXCEL_CONST end excel = WIN32OLE.new('Excel.Application') WIN32OLE.const_load(excel, EXCEL_CONST) puts EXCEL_CONST::XlTop # => -4160 puts EXCEL_CONST::CONSTANTS['_xlDialogChartSourceData'] # => 541 WIN32OLE.const_load(excel) puts WIN32OLE::XlTop # => -4160 module MSO end WIN32OLE.const_load('Microsoft Office 9.0 Object Library', MSO) puts MSO::MsoLineSingle # => 1
Returns event interface name if the method is event.
tobj = WIN32OLE_TYPE.new('Microsoft Excel 9.0 Object Library', 'Workbook') method = WIN32OLE_METHOD.new(tobj, 'SheetActivate') puts method.event_interface # => WorkbookEvents
Returns major version.
tobj = WIN32OLE_TYPE.new('Microsoft Word 10.0 Object Library', 'Documents') puts tobj.major_version # => 8
Returns minor version.
tobj = WIN32OLE_TYPE.new('Microsoft Word 10.0 Object Library', 'Documents') puts tobj.minor_version # => 2
Returns the type library major version.
tlib = WIN32OLE_TYPELIB.new('Microsoft Excel 9.0 Object Library') puts tlib.major_version # -> 1
Returns the type library minor version.
tlib = WIN32OLE_TYPELIB.new('Microsoft Excel 9.0 Object Library') puts tlib.minor_version # -> 3
Try to convert obj into a hash, using to_hash method. Returns converted hash or nil if obj cannot be converted for any reason.
Hash.try_convert({1=>2}) # => {1=>2} Hash.try_convert("1=>2") # => nil
Reads at most maxlen bytes from the ARGF stream in non-blocking mode.
Returns the external encoding for files read from ARGF as an Encoding object. The external encoding is the encoding of the text as stored in a file. Contrast with ARGF.internal_encoding, which is the encoding used to represent this text within Ruby.
To set the external encoding use ARGF.set_encoding.
For example:
ARGF.external_encoding #=> #<Encoding:UTF-8>
Returns the internal encoding for strings read from ARGF as an Encoding object.
If ARGF.set_encoding has been called with two encoding names, the second is returned. Otherwise, if Encoding.default_external has been set, that value is returned. Failing that, if a default external encoding was specified on the command-line, that value is used. If the encoding is unknown, nil is returned.
Create an HTTP header block as a string.
Includes the empty line that ends the header block.
content_type_string
If this form is used, this string is the Content-Type
headers_hash
A Hash of header values. The following header keys are recognized:
The Content-Type header. Defaults to “text/html”
The charset of the body, appended to the Content-Type header.
A boolean value. If true, prepend protocol string and status code, and date; and sets default values for “server” and “connection” if not explicitly set.
The HTTP status code as a String, returned as the Status header. The values are:
200 OK
206 Partial Content
300 Multiple Choices
301 Moved Permanently
302 Found
304 Not Modified
400 Bad Request
401 Authorization Required
403 Forbidden
404 Not Found
405 Method Not Allowed
406 Not Acceptable
411 Length Required
412 Precondition Failed
500 Internal Server Error
501 Method Not Implemented
502 Bad Gateway
506 Variant Also Negotiates
The server software, returned as the Server header.
The connection type, returned as the Connection header (for instance, “close”.
The length of the content that will be sent, returned as the Content-Length header.
The language of the content, returned as the Content-Language header.
The time on which the current content expires, as a Time object, returned as the Expires header.
A cookie or cookies, returned as one or more Set-Cookie headers. The value can be the literal string of the cookie; a CGI::Cookie object; an Array of literal cookie strings or Cookie objects; or a hash all of whose values are literal cookie strings or Cookie objects.
These cookies are in addition to the cookies held in the @output_cookies field.
Other headers can also be set; they are appended as key: value.
Examples:
http_header # Content-Type: text/html http_header("text/plain") # Content-Type: text/plain http_header("nph" => true, "status" => "OK", # == "200 OK" # "status" => "200 GOOD", "server" => ENV['SERVER_SOFTWARE'], "connection" => "close", "type" => "text/html", "charset" => "iso-2022-jp", # Content-Type: text/html; charset=iso-2022-jp "length" => 103, "language" => "ja", "expires" => Time.now + 30, "cookie" => [cookie1, cookie2], "my_header1" => "my_value", "my_header2" => "my_value")
This method does not perform charset conversion.
Returns true if unconverted_fields() to parsed results. See CSV::new for details.
Returns true if headers will be returned as a row of results. See CSV::new for details.
Returns true if headers are written in output. See CSV::new for details.
Returns true if illegal input is handled. See CSV::new for details.