Class: Vcard::V3_0::Grammar

Inherits:
Object
  • Object
show all
Defined in:
lib/vobject/vcard/v3_0/grammar.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(strict) ⇒ Grammar

Returns a new instance of Grammar.



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# File 'lib/vobject/vcard/v3_0/grammar.rb', line 146

def initialize(strict)
  self.strict = strict
  self.errors = []
end

Instance Attribute Details

#errors ⇒ Object

Returns the value of attribute errors.



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# File 'lib/vobject/vcard/v3_0/grammar.rb', line 16

def errors
  @errors
end

#strict ⇒ Object

Returns the value of attribute strict.



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# File 'lib/vobject/vcard/v3_0/grammar.rb', line 16

def strict
  @strict
end

Class Method Details

.unfold(str) ⇒ Object 



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# File 'lib/vobject/vcard/v3_0/grammar.rb', line 18

def unfold(str)
  str.gsub(/[\n\r]+[ \t]/, "")
end

Instance Method Details

#parse(vobject) ⇒ Object 



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# File 'lib/vobject/vcard/v3_0/grammar.rb', line 151

def parse(vobject)
  @ctx = Rsec::ParseContext.new self.class.unfold(vobject), "source"
  ret = vobject_grammar._parse @ctx
  if !ret || Rsec::INVALID[ret]
    if strict
      raise @ctx.generate_error "source"
    else
      errors << @ctx.generate_error("source")
      ret = { VCARD: nil, errors: errors.flatten }
    end
  end
  Rsec::Fail.reset
  ret
end

#vobject_grammar ⇒ Object 



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# File 'lib/vobject/vcard/v3_0/grammar.rb', line 23

def vobject_grammar
  # properties with value cardinality 1
  @cardinality1 = {}
  @cardinality1[:PARAM] = Set.new [:VALUE]
  @cardinality1[:PROP] = Set.new [:KIND, :N, :BDAY, :ANNIVERSARY, :GENDER, :PRODID, :REV, :UID]

  group = C::IANATOKEN
  linegroup = group <<  "."
  beginend = /BEGIN/i.r | /END/i.r

  # parameters && parameter types
  paramname = /ENCODING/i.r | /LANGUAGE/i.r | /CONTEXT/i.r | /TYPE/i.r | /VALUE/i.r | /PREF/i.r
  otherparamname = C::NAME_VCARD ^ paramname
  paramvalue = C::QUOTEDSTRING_VCARD.map { |s| s } | C::PTEXT_VCARD.map(&:upcase)

  # prefvalue = /[0-9]{1,2}/i.r | "100".r
  valuetype = /URI/i.r | /DATE/i.r | /DATE-TIME/i.r | /BINARY/i.r | /PTEXT/i.r
  # mediaattr = /[!\"#$%&'*+.^A-Z0-9a-z_`i{}|~-]+/.r
  # mediavalue1 =	mediaattr | C::QUOTEDSTRING_VCARD
  # mediatail = seq(";".r >> mediaattr, "=".r << mediavalue1).map do |a, v|
  #  ";#{a}=#{v}"
  # end
  # rfc4288regname = /[A-Za-z0-9!#$&.+^+-]{1,127}/.r
  # rfc4288typename = rfc4288regname
  # rfc4288subtypename = rfc4288regname
  # mediavalue = seq(rfc4288typename << "/".r, rfc4288subtypename, # mediatail.star).map do |t, s, tail|
  #  ret = "#{t}/#{s}"
  #  ret = ret . tail[0] unless tail.empty?
  #  ret
  # end
  pvalue_list = (seq(paramvalue << ",".r, lazy { pvalue_list }) & /[;:]/.r).map do |e, list|
    [e.sub(Regexp.new("^\"(.+)\"$"), '\1').gsub(/\\n/, "\n"), list].flatten
  end | (paramvalue & /[;:]/.r).map do |e|
    [e.sub(Regexp.new("^\"(.+)\"$"), '\1').gsub(/\\n/, "\n")]
  end
  typevaluelist = seq(C::IANATOKEN, ",".r >> lazy { typevaluelist }).map do |t, l|
    [t.upcase, l].flatten
  end | C::IANATOKEN.map { |t| [t.upcase] }
  quoted_string_list = (seq(C::QUOTEDSTRING_VCARD << ",".r, lazy { quoted_string_list }) & /[;:]/.r).map do |e, list|
    [e.sub(Regexp.new("^\"(.+)\"$"), '\1').gsub(/\\n/, "\n"), list].flatten
  end | (C::QUOTEDSTRING_VCARD & /[;:]/.r).map do |e|
    [e.sub(Regexp.new("^\"(.+)\"$"), '\1').gsub(/\\n/, "\n")]
  end

  # fmttypevalue = seq(rfc4288typename, "/", rfc4288subtypename).map(&:join)
  rfc1766primarytag = /[A-Za-z]{1,8}/.r
  rfc1766subtag = seq("-", /[A-Za-z]{1,8}/.r) { |a, b| a + b }
  rfc1766language = seq(rfc1766primarytag, rfc1766subtag.star) do |a, b|
    a += b[0] unless b.empty?
    a
  end

  param = seq(/ENCODING/i.r, "=", /b/.r) do |name, _, val|
    { name.upcase.tr("-", "_").to_sym => val }
  end | seq(/LANGUAGE/i.r, "=", rfc1766language) do |name, _, val|
    { name.upcase.tr("-", "_").to_sym => val.upcase }
  end | seq(/CONTEXT/i.r, "=", /word/.r) do |name, _, val|
    { name.upcase.tr("-", "_").to_sym => val.upcase }
  end | seq(/TYPE/i.r, "=", typevaluelist) do |name, _, val|
    { name.upcase.tr("-", "_").to_sym => val }
  end | seq(/VALUE/i.r, "=", valuetype) do |name, _, val|
    { name.upcase.tr("-", "_").to_sym => val }
  end | /PREF/i.r.map do |_name|
    # this is likely erroneous use of VCARD 2.1 convention in RFC2739; converting to canonical TYPE=PREF
    { TYPE: ["PREF"] }
  end | seq(otherparamname, "=", pvalue_list) do |name, _, val|
    val = val[0] if val.length == 1
    { name.upcase.tr("-", "_").to_sym => val }
  end | seq(paramname, "=", pvalue_list) do |name, _, val|
    parse_err("Violated format of parameter value #{name} = #{val}")
  end

  params = seq(";".r >> param & ";", lazy { params }) do |p, ps|
    p.merge(ps) do |key, old, new|
      if @cardinality1[:PARAM].include?(key)
        parse_err("Violated cardinality of parameter #{key}")
      end
      [old, new].flatten
      # deal with duplicate properties
    end
  end |  seq(";".r >> param).map { |e| e[0] }

  contentline = seq(linegroup._?, C::NAME_VCARD, params._? << ":".r,
                    C::VALUE, /(\r|\n|\r\n)/) do |g, name, p, value, _|
    key =  name.upcase.tr("-", "_").to_sym
    hash = { key => {} }
    hash[key][:value], errors1 = Typegrammars.typematch(strict, key, p[0], :GENERIC, value, @ctx)
    errors << errors1
    hash[key][:group] = g[0] unless g.empty?
    errors << Paramcheck.paramcheck(strict, key, p.empty? ? {} : p[0], @ctx)
    hash[key][:params] = p[0] unless p.empty?
    hash
  end
  props = seq(contentline, lazy { props }) do |c, rest|
    c.merge(rest) do |key, old, new|
      if @cardinality1[:PROP].include?(key.upcase)
        parse_err("Violated cardinality of property #{key}")
      end
      [old, new].flatten
      # deal with duplicate properties
    end
  end | ("".r & beginend).map { {} }

  calpropname = /VERSION/i.r
  calprop = seq(linegroup._?, calpropname << ":".r, C::VALUE, /[\r\n]/) do |g, key, value, _|
    key = key.upcase.tr("-", "_").to_sym
    hash = { key => {} }
    hash[key][:value], errors1 = Typegrammars.typematch(strict, key, nil, :VCARD, value, @ctx)
    errors << errors1
    hash[key][:group] = g[0] unless g.empty?
    hash
  end
  vobject = seq(linegroup._?, /BEGIN:VCARD[\r\n]/i.r >> calprop, props, linegroup._? << /END:VCARD[\r\n]/i.r) do |(_g, v, rest, _g1)|
    # TODO what do we do with the groups here?
    parse_err("Missing VERSION attribute") unless v.has_key?(:VERSION)
    parse_err("Missing FN attribute") unless rest.has_key?(:FN)
    parse_err("Missing N attribute") unless rest.has_key?(:N)
    rest.delete(:END)
    { VCARD: v.merge(rest), errors: errors.flatten }
  end
  vobject.eof
end