Validator
performs various gem file and gem database validation
Not a URI
.
Not a URI
component.
Process::Status
encapsulates the information on the status of a running or terminated system process. The built-in variable $?
is either nil
or a Process::Status
object.
fork { exit 99 } #=> 26557 Process.wait #=> 26557 $?.class #=> Process::Status $?.to_i #=> 25344 $? >> 8 #=> 99 $?.stopped? #=> false $?.exited? #=> true $?.exitstatus #=> 99
Posix systems record information on processes using a 16-bit integer. The lower bits record the process status (stopped, exited, signaled) and the upper bits possibly contain additional information (for example the program’s return code in the case of exited processes). Pre Ruby 1.8, these bits were exposed directly to the Ruby program. Ruby now encapsulates these in a Process::Status
object. To maximize compatibility, however, these objects retain a bit-oriented interface. In the descriptions that follow, when we talk about the integer value of stat, we’re referring to this 16 bit value.
Raised by Encoding
and String
methods when the string being transcoded contains a byte invalid for the either the source or target encoding.
AbstractSyntaxTree
provides methods to parse Ruby code into abstract syntax trees. The nodes in the tree are instances of RubyVM::AbstractSyntaxTree::Node
.
File::Constants
provides file-related constants. All possible file constants are listed in the documentation but they may not all be present on your platform.
If the underlying platform doesn’t define a constant the corresponding Ruby constant is not defined.
Your platform documentations (e.g. man open(2)) may describe more detailed information.
This module provides instance methods for a digest implementation object to calculate message digest values.
exception to wait for writing. see IO.select
.
Socket::Constants
provides socket-related constants. All possible socket constants are listed in the documentation but they may not all be present on your platform.
If the underlying platform doesn’t define a constant the corresponding Ruby constant is not defined.
Mixin for holding meta-information.
Acceptable argument classes. Now contains DecimalInteger, OctalInteger and DecimalNumeric. See Acceptable argument classes (in source code).
Mixin methods for local and remote Gem::Command
options.
This module is used to manager HTTP status codes.
See www.w3.org/Protocols/rfc2616/rfc2616-sec10.html for more information.
The top-level class representing any ASN.1 object. When parsed by ASN1.decode
, tagged values are always represented by an instance of ASN1Data
.
ASN1Data
for parsing tagged values When encoding an ASN.1 type it is inherently clear what original type (e.g. INTEGER, OCTET STRING etc.) this value has, regardless of its tagging. But opposed to the time an ASN.1 type is to be encoded, when parsing them it is not possible to deduce the “real type” of tagged values. This is why tagged values are generally parsed into ASN1Data
instances, but with a different outcome for implicit and explicit tagging.
An implicitly 1-tagged INTEGER value will be parsed as an ASN1Data
with
tag equal to 1
tag_class equal to :CONTEXT_SPECIFIC
value equal to a String
that carries the raw encoding of the INTEGER.
This implies that a subsequent decoding step is required to completely decode implicitly tagged values.
An explicitly 1-tagged INTEGER value will be parsed as an ASN1Data
with
tag equal to 1
tag_class equal to :CONTEXT_SPECIFIC
value equal to an Array
with one single element, an instance of OpenSSL::ASN1::Integer
, i.e. the inner element is the non-tagged primitive value, and the tagging is represented in the outer ASN1Data
int = OpenSSL::ASN1::Integer.new(1, 0, :IMPLICIT) # implicit 0-tagged seq = OpenSSL::ASN1::Sequence.new( [int] ) der = seq.to_der asn1 = OpenSSL::ASN1.decode(der) # pp asn1 => #<OpenSSL::ASN1::Sequence:0x87326e0 # @indefinite_length=false, # @tag=16, # @tag_class=:UNIVERSAL, # @tagging=nil, # @value= # [#<OpenSSL::ASN1::ASN1Data:0x87326f4 # @indefinite_length=false, # @tag=0, # @tag_class=:CONTEXT_SPECIFIC, # @value="\x01">]> raw_int = asn1.value[0] # manually rewrite tag and tag class to make it an UNIVERSAL value raw_int.tag = OpenSSL::ASN1::INTEGER raw_int.tag_class = :UNIVERSAL int2 = OpenSSL::ASN1.decode(raw_int) puts int2.value # => 1
int = OpenSSL::ASN1::Integer.new(1, 0, :EXPLICIT) # explicit 0-tagged seq = OpenSSL::ASN1::Sequence.new( [int] ) der = seq.to_der asn1 = OpenSSL::ASN1.decode(der) # pp asn1 => #<OpenSSL::ASN1::Sequence:0x87326e0 # @indefinite_length=false, # @tag=16, # @tag_class=:UNIVERSAL, # @tagging=nil, # @value= # [#<OpenSSL::ASN1::ASN1Data:0x87326f4 # @indefinite_length=false, # @tag=0, # @tag_class=:CONTEXT_SPECIFIC, # @value= # [#<OpenSSL::ASN1::Integer:0x85bf308 # @indefinite_length=false, # @tag=2, # @tag_class=:UNIVERSAL # @tagging=nil, # @value=1>]>]> int2 = asn1.value[0].value[0] puts int2.value # => 1
This class represents a YAML Alias. It points to an anchor
.
A Psych::Nodes::Alias
is a terminal node and may have no children.
This class represents a YAML Scalar.
This node type is a terminal node and should not have any children.