Generate a reset button Input element, as a String.
This resets the values on a form to their initial values. value is the text displayed on the button. name is the name of this button.
Alternatively, the attributes can be specified as a hash.
reset # <INPUT TYPE="reset"> reset("reset") # <INPUT TYPE="reset" VALUE="reset"> reset("VALUE" => "reset", "ID" => "foo") # <INPUT TYPE="reset" VALUE="reset" ID="foo">
Generate a TextArea element, as a String.
name is the name of the textarea. cols is the number of columns and rows is the number of rows in the display.
Alternatively, the attributes can be specified as a hash.
The body is provided by the passed-in no-argument block
textarea("name") # = textarea("NAME" => "name", "COLS" => 70, "ROWS" => 10) textarea("name", 40, 5) # = textarea("NAME" => "name", "COLS" => 40, "ROWS" => 5)
Open a client connection to uri with the configuration config.
The DRbProtocol module asks each registered protocol in turn to try to open the URI. Each protocol signals that it does not handle that URI by raising a DRbBadScheme error. If no protocol recognises the URI, then a DRbBadURI error is raised. If a protocol accepts the URI, but an error occurs in opening it, a DRbConnError is raised.
Open a client connection to uri with the configuration config.
The DRbProtocol module asks each registered protocol in turn to try to open the URI. Each protocol signals that it does not handle that URI by raising a DRbBadScheme error. If no protocol recognises the URI, then a DRbBadURI error is raised. If a protocol accepts the URI, but an error occurs in opening it, a DRbConnError is raised.
OpenURI::OpenRead#open provides ‘open’ for URI::HTTP and URI::FTP.
OpenURI::OpenRead#open takes optional 3 arguments as:
OpenURI::OpenRead#open([mode [, perm]] [, options]) [{|io| ... }]
OpenURI::OpenRead#open returns an IO-like object if block is not given. Otherwise it yields the IO object and return the value of the block. The IO object is extended with OpenURI::Meta.
mode and perm are the same as Kernel#open.
However, mode must be read mode because OpenURI::OpenRead#open doesn’t support write mode (yet). Also perm is ignored because it is meaningful only for file creation.
options must be a hash.
Each option with a string key specifies an extra header field for HTTP. I.e., it is ignored for FTP without HTTP proxy.
The hash may include other options, where keys are symbols:
Synopsis:
:proxy => "http://proxy.foo.com:8000/"
:proxy => URI.parse("http://proxy.foo.com:8000/")
:proxy => true
:proxy => false
:proxy => nil
If :proxy option is specified, the value should be String, URI, boolean or nil.
When String or URI is given, it is treated as proxy URI.
When true is given or the option itself is not specified, environment variable ‘scheme_proxy’ is examined. ‘scheme’ is replaced by ‘http’, ‘https’ or ‘ftp’.
When false or nil is given, the environment variables are ignored and connection will be made to a server directly.
Synopsis:
:proxy_http_basic_authentication =>
["http://proxy.foo.com:8000/", "proxy-user", "proxy-password"]
:proxy_http_basic_authentication =>
[URI.parse("http://proxy.foo.com:8000/"),
"proxy-user", "proxy-password"]
If :proxy option is specified, the value should be an Array with 3 elements. It should contain a proxy URI, a proxy user name and a proxy password. The proxy URI should be a String, an URI or nil. The proxy user name and password should be a String.
If nil is given for the proxy URI, this option is just ignored.
If :proxy and :proxy_http_basic_authentication is specified, ArgumentError is raised.
Synopsis:
:http_basic_authentication=>[user, password]
If :http_basic_authentication is specified, the value should be an array which contains 2 strings: username and password. It is used for HTTP Basic authentication defined by RFC 2617.
Synopsis:
:content_length_proc => lambda {|content_length| ... }
If :content_length_proc option is specified, the option value procedure is called before actual transfer is started. It takes one argument, which is expected content length in bytes.
If two or more transfers are performed by HTTP redirection, the procedure is called only once for the last transfer.
When expected content length is unknown, the procedure is called with nil. This happens when the HTTP response has no Content-Length header.
Synopsis:
:progress_proc => lambda {|size| ...}
If :progress_proc option is specified, the proc is called with one argument each time when ‘open’ gets content fragment from network. The argument size is the accumulated transferred size in bytes.
If two or more transfer is done by HTTP redirection, the procedure is called only one for a last transfer.
:progress_proc and :content_length_proc are intended to be used for progress bar. For example, it can be implemented as follows using Ruby/ProgressBar.
pbar = nil
open("http://...",
:content_length_proc => lambda {|t|
if t && 0 < t
pbar = ProgressBar.new("...", t)
pbar.file_transfer_mode
end
},
:progress_proc => lambda {|s|
pbar.set s if pbar
}) {|f| ... }
Synopsis:
:read_timeout=>nil (no timeout) :read_timeout=>10 (10 second)
:read_timeout option specifies a timeout of read for http connections.
Synopsis:
:open_timeout=>nil (no timeout) :open_timeout=>10 (10 second)
:open_timeout option specifies a timeout of open for http connections.
Synopsis:
:ssl_ca_cert=>filename or an Array of filenames
:ssl_ca_cert is used to specify CA certificate for SSL. If it is given, default certificates are not used.
Synopsis:
:ssl_verify_mode=>mode
:ssl_verify_mode is used to specify openssl verify mode.
Synopsis:
:ssl_min_version=>:TLS1_2
:ssl_min_version option specifies the minimum allowed SSL/TLS protocol version. See also OpenSSL::SSL::SSLContext#min_version=.
Synopsis:
:ssl_max_version=>:TLS1_2
:ssl_max_version option specifies the maximum allowed SSL/TLS protocol version. See also OpenSSL::SSL::SSLContext#max_version=.
Synopsis:
:ftp_active_mode=>bool
:ftp_active_mode => true is used to make ftp active mode. Ruby 1.9 uses passive mode by default. Note that the active mode is default in Ruby 1.8 or prior.
Synopsis:
:redirect=>bool
:redirect is true by default. :redirect => false is used to disable all HTTP redirects.
OpenURI::HTTPRedirect exception raised on redirection. Using true also means that redirections between http and ftp are permitted.
Adds a separated list. The list is separated by comma with breakable space, by default.
seplist iterates the list using iter_method. It yields each object to the block given for seplist. The procedure separator_proc is called between each yields.
If the iteration is zero times, separator_proc is not called at all.
If separator_proc is nil or not given, +lambda { comma_breakable }+ is used. If iter_method is not given, :each is used.
For example, following 3 code fragments has similar effect.
q.seplist([1,2,3]) {|v| xxx v } q.seplist([1,2,3], lambda { q.comma_breakable }, :each) {|v| xxx v } xxx 1 q.comma_breakable xxx 2 q.comma_breakable xxx 3
Generate a random base64 string.
The argument n specifies the length, in bytes, of the random number to be generated. The length of the result string is about 4/3 of n.
If n is not specified or is nil, 16 is assumed. It may be larger in the future.
The result may contain A-Z, a-z, 0-9, “+”, “/” and “=”.
require 'random/formatter' Random.base64 #=> "/2BuBuLf3+WfSKyQbRcc/A==" # or prng = Random.new prng.base64 #=> "6BbW0pxO0YENxn38HMUbcQ=="
See RFC 3548 for the definition of base64.
Generate a string that randomly draws from a source array of characters.
The argument source specifies the array of characters from which to generate the string. The argument n specifies the length, in characters, of the string to be generated.
The result may contain whatever characters are in the source array.
require 'random/formatter' prng.choose([*'l'..'r'], 16) #=> "lmrqpoonmmlqlron" prng.choose([*'0'..'9'], 5) #=> "27309"
Generate a random alphanumeric string.
The argument n specifies the length, in characters, of the alphanumeric string to be generated.
If n is not specified or is nil, 16 is assumed. It may be larger in the future.
The result may contain A-Z, a-z and 0-9.
require 'random/formatter' Random.alphanumeric #=> "2BuBuLf3WfSKyQbR" # or prng = Random.new prng.alphanumeric(10) #=> "i6K93NdqiH"
Resets the trust directory for verifying gems.
Displays an alert statement. Asks a question if given.
This calls IO.popen and reads the result
Set the user ID of the current process to user. Not available on all platforms.
Set the group ID of the current process to group. Not available on all platforms.
Set the real user ID of the calling process to user. Not available on all platforms.
Set the real group ID of the calling process to group. Not available on all platforms.
Set the effective user ID of the calling process to user. Not available on all platforms.
Set the effective group ID of the calling process to group. Not available on all platforms.
Sets the (user) real and/or effective user IDs of the current process to rid and eid, respectively. A value of -1 for either means to leave that ID unchanged. Not available on all platforms.
Sets the (group) real and/or effective group IDs of the current process to rid and eid, respectively. A value of -1 for either means to leave that ID unchanged. Not available on all platforms.
Sets the (user) real, effective, and saved user IDs of the current process to rid, eid, and sid respectively. A value of -1 for any value means to leave that ID unchanged. Not available on all platforms.