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# Copyright (c) 2006 Tanaka Akira. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# 1. Redistributions of source code must retain the above copyright notice, this
# list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation
# and/or other materials provided with the distribution.
# 3. The name of the author may not be used to endorse or promote products
# derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
# EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
# OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
# IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
# OF SUCH DAMAGE.
class WebApp
# QueryString represents a query component of URI.
class QueryString
class << self
alias primitive_new_for_raw_query_string new
undef new
end
PctEncoded = /%[0-9A-Fa-f][0-9A-Fa-f]/
def initialize(escaped)
if /\A(?:[#{QueryChars}]|#{PctEncoded})*\z/o !~ escaped
raise ArgumentError, "not properly escaped: #{escaped.inspect}"
end
@escaped_query_string = escaped
end
def inspect
"#<#{self.class}: #{@escaped_query_string}>"
end
alias to_s inspect
def QueryString.html_form(arg, sep=';')
case arg
when Array
QueryString.html_form_array(arg, sep)
when Hash
QueryString.html_form_hash(arg, sep)
else
raise ArgumentError, "array or hash expected: #{arg.inspect}"
end
end
# :stopdoc:
def QueryString.html_form_hash(hash, sep=';')
pairs = []
hash.keys.sort.each {|k|
v = hash[k]
if Array === v
v.each {|vv| pairs << [k, vv] }
else
pairs << [k, v]
end
}
QueryString.html_form_array(pairs, sep)
end
def QueryString.html_form_array(pairs, sep=';')
raw_query = pairs.map {|k, v|
"#{escape_html_form_key_value(k)}=#{escape_html_form_key_value(e)}"
}.join(sep)
primitive_new_for_raw_query_string(raw_query)
end
# RFC 3986
Alpha = 'a-zA-Z'
Digit = '0-9'
UnreservedChars = Alpha + Digit + '\-._~'
SubDelimChars = '!$&\'()*+,;='
PChars = UnreservedChars + SubDelimChars + ":@"
QueryChars = PChars + "/?"
def QueryString.escape_query_string(s)
s.gsub(/[^#{QueryChars}]/on) {|c|
sprintf("%%%02X", c[0])
}
end
# [;&=+] are used as delimiters in application/x-www-form-urlencoded.
FormKeyValueChars = QueryChars.gsub(/[;&=+]/, '') + ' '
def QueryString.escape_html_form_key_value(s)
s.gsub(/[^#{FormKeyValueChars}]/on) {|c|
sprintf("%%%02X", c[0])
}.gsub(/ /on, '+')
end
# :startdoc:
end
end
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