Returns an array of syntax error messages
If no missing pairs are found it falls back on the original error messages
Components of the URI
in the order.
Returns the parser to be used.
Unless a URI::Parser is defined, DEFAULT_PARSER is used.
Components of the URI
in the order.
Checks the fragment v
component against the URI::Parser Regexp
for :FRAGMENT.
v
Public setter for the fragment component v
(with validation).
require 'uri' uri = URI.parse("http://my.example.com/?id=25#time=1305212049") uri.fragment = "time=1305212086" uri.to_s #=> "http://my.example.com/?id=25#time=1305212086"
uri
Parses uri
and constructs either matching URI
scheme object (File
, FTP
, HTTP
, HTTPS
, LDAP
, LDAPS
, or MailTo
) or URI::Generic
.
p = URI::Parser.new p.parse("ldap://ldap.example.com/dc=example?user=john") #=> #<URI::LDAP ldap://ldap.example.com/dc=example?user=john>
str
String
to search
schemes
Patterns to apply to str
Attempts to parse and merge a set of URIs. If no block
given, then returns the result, else it calls block
for each element in result.
See also URI::Parser.make_regexp.
Removes escapes from str
.
Returns true
if this lock is currently held by current thread.
Removes all objects from the queue.
Removes all objects from the queue.
Removes all map entries; returns self
.
Parses the given string into an abstract syntax tree, returning the root node of that tree.
RubyVM::AbstractSyntaxTree.parse("x = 1 + 2") # => #<RubyVM::AbstractSyntaxTree::Node:SCOPE@1:0-1:9>
If keep_script_lines: true
option is provided, the text of the parsed source is associated with nodes and is available via Node#script_lines
.
If keep_tokens: true
option is provided, Node#tokens
are populated.
SyntaxError
is raised if the given string is invalid syntax. To overwrite this behavior, error_tolerant: true
can be provided. In this case, the parser will produce a tree where expressions with syntax errors would be represented by Node
with type=:ERROR
.
root = RubyVM::AbstractSyntaxTree.parse("x = 1; p(x; y=2") # <internal:ast>:33:in `parse': syntax error, unexpected ';', expecting ')' (SyntaxError) # x = 1; p(x; y=2 # ^ root = RubyVM::AbstractSyntaxTree.parse("x = 1; p(x; y=2", error_tolerant: true) # (SCOPE@1:0-1:15 # tbl: [:x, :y] # args: nil # body: (BLOCK@1:0-1:15 (LASGN@1:0-1:5 :x (LIT@1:4-1:5 1)) (ERROR@1:7-1:11) (LASGN@1:12-1:15 :y (LIT@1:14-1:15 2)))) root.children.last.children # [(LASGN@1:0-1:5 :x (LIT@1:4-1:5 1)), # (ERROR@1:7-1:11), # (LASGN@1:12-1:15 :y (LIT@1:14-1:15 2))]
Note that parsing continues even after the errored expression.
Returns HTML-unescaped string.
Returns URL-escaped string following RFC 3986.
Returns URL-unescaped string (application/x-www-form-urlencoded
).
URL-decode an application/x-www-form-urlencoded string with encoding(optional).
string = CGI.unescape("%27Stop%21%27+said+Fred") # => "'Stop!' said Fred"
URL-encode a string following RFC 3986 Space characters (+“ ”+) are encoded with (+“%20”+)
url_encoded_string = CGI.escapeURIComponent("'Stop!' said Fred") # => "%27Stop%21%27%20said%20Fred"
Unescape a string that has been HTML-escaped
CGI.unescapeHTML("Usage: foo "bar" <baz>") # => "Usage: foo \"bar\" <baz>"
Undo escaping such as that done by CGI.escapeElement()
print CGI.unescapeElement( CGI.escapeHTML('<BR><A HREF="url"></A>'), "A", "IMG") # "<BR><A HREF="url"></A>" print CGI.unescapeElement( CGI.escapeHTML('<BR><A HREF="url"></A>'), ["A", "IMG"]) # "<BR><A HREF="url"></A>"
If a block is given, it prints out each of the elements encountered. Block parameters are (in that order):
depth: The recursion depth, plus one with each constructed value being encountered (Integer
)
offset: Current byte offset (Integer
)
header length: Combined length in bytes of the Tag and Length headers. (Integer
)
length: The overall remaining length of the entire data (Integer
)
constructed: Whether this value is constructed or not (Boolean
)
tag_class: Current tag class (Symbol
)
tag: The current tag number (Integer
)
der = File.binread('asn1data.der') OpenSSL::ASN1.traverse(der) do | depth, offset, header_len, length, constructed, tag_class, tag| puts "Depth: #{depth} Offset: #{offset} Length: #{length}" puts "Header length: #{header_len} Tag: #{tag} Tag class: #{tag_class} Constructed: #{constructed}" end
Reads at most maxlen bytes from the stream. If buf is provided it must reference a string which will receive the data.
See IO#readpartial
for full details.