Class: Regexp

Inherits:
Object show all
Defined in:
gems/carbuncle-support/mrblib/regexp_compat.rb,
.doc_tmp/iij/mruby-regexp-pcre/mrblib/regexp_pcre.rb,
.doc_tmp/iij/mruby-regexp-pcre/src/mruby_regexp_pcre.c

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Object 



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# File '.doc_tmp/iij/mruby-regexp-pcre/src/mruby_regexp_pcre.c', line 90

mrb_value
regexp_pcre_initialize(mrb_state *mrb, mrb_value self)
{
  int erroff = 0, coptions;
  const char *errstr = NULL;
  struct mrb_regexp_pcre *reg = NULL;
  mrb_value source, opt = mrb_nil_value();
  unsigned char *name_table, *tabptr;
  int i, namecount, name_entry_size;

  mrb_get_args(mrb, "o|o", &source, &opt);
  if (mrb_obj_is_kind_of(mrb, source, mrb_class_get(mrb, "Regexp"))) {
    opt    = mrb_iv_get(mrb, source, mrb_intern_lit(mrb, "@options"));
    source = mrb_iv_get(mrb, source, mrb_intern_lit(mrb, "@source"));
  }
  source = mrb_string_type(mrb, source);

  reg = (struct mrb_regexp_pcre *)DATA_PTR(self);
  if (reg) {
    mrb_regexp_free(mrb, reg);
  }
  DATA_TYPE(self) = &mrb_regexp_type;
  DATA_PTR(self) = NULL;

  reg = mrb_malloc(mrb, sizeof(struct mrb_regexp_pcre));
  reg->re = NULL;
  DATA_PTR(self) = reg;

  coptions = mrb_mruby_to_pcre_options(opt);
  source = mrb_str_new(mrb, RSTRING_PTR(source), RSTRING_LEN(source));
  reg->re = pcre_compile(RSTRING_PTR(source), coptions, &errstr, &erroff, NULL);
  if (reg->re == NULL) {
    mrb_raisef(mrb, E_ARGUMENT_ERROR, "invalid regular expression");
  }
  mrb_iv_set(mrb, self, mrb_intern_lit(mrb, "@source"), source);
  mrb_iv_set(mrb, self, mrb_intern_lit(mrb, "@options"), mrb_fixnum_value(mrb_pcre_to_mruby_options(coptions)));

  pcre_fullinfo(reg->re, NULL, PCRE_INFO_NAMECOUNT, &namecount);
  if (namecount > 0) {
    pcre_fullinfo(reg->re, NULL, PCRE_INFO_NAMETABLE, &name_table);
    pcre_fullinfo(reg->re, NULL, PCRE_INFO_NAMEENTRYSIZE, &name_entry_size);
    tabptr = name_table;
    for (i = 0; i < namecount; i++) {
      int n = (tabptr[0] << 8) | tabptr[1];
      mrb_funcall(mrb, self, "name_push", 2, mrb_str_new(mrb, (const char *)(tabptr + 2), strlen((const char *)tabptr + 2)), mrb_fixnum_value(n));
      tabptr += name_entry_size;
    }
  } 

  return self;
}

Instance Attribute Details

#last_match ⇒ Object (readonly)

Returns the value of attribute last_match.



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# File '.doc_tmp/iij/mruby-regexp-pcre/mrblib/regexp_pcre.rb', line 4

def last_match
  @last_match
end

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File '.doc_tmp/iij/mruby-regexp-pcre/mrblib/regexp_pcre.rb', line 2

def options
  @options
end

#source ⇒ Object (readonly)

Returns the value of attribute source.



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# File '.doc_tmp/iij/mruby-regexp-pcre/mrblib/regexp_pcre.rb', line 3

def source
  @source
end

Class Method Details

.compile(*args) ⇒ Object 



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# File '.doc_tmp/iij/mruby-regexp-pcre/mrblib/regexp_pcre.rb', line 10

def self.compile(*args)
  self.new(*args)
end

.escape(str) ⇒ Object 



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# File '.doc_tmp/iij/mruby-regexp-pcre/mrblib/regexp_pcre.rb', line 83

def self.escape(str)
  escape_table = {
    "\ " => '\\ ', # '?\ ' is a space
    "["  => '\\[',
    "]"  => '\\]', 
    "{"  => '\\{', 
    "}"  => '\\}', 
    "("  => '\\(', 
    ")"  => '\\)', 
    "|"  => '\\|', 
    "-"  => '\\-', 
    "*"  => '\\*', 
    "."  => '\\.', 
    "\\" => '\\\\',
    "?"  => '\\?', 
    "+"  => '\\+', 
    "^"  => '\\^', 
    "$"  => '\\$', 
    "#"  => '\\#', 
    "\n" => '\\n', 
    "\r" => '\\r', 
    "\f" => '\\f', 
    "\t" => '\\t', 
    "\v" => '\\v', 
  }

  s = ""
  str.each_char do |c|
    if escape_table[c]
      s += escape_table[c]
    else
      s += c
    end
  end
  s
end

.last_match ⇒ Object 



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# File '.doc_tmp/iij/mruby-regexp-pcre/mrblib/regexp_pcre.rb', line 14

def self.last_match
  @last_match
end

.quote(str) ⇒ Object 



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# File '.doc_tmp/iij/mruby-regexp-pcre/mrblib/regexp_pcre.rb', line 6

def self.quote(str)
  self.escape(str)
end

Instance Method Details

#== ⇒ Object 



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# File '.doc_tmp/iij/mruby-regexp-pcre/src/mruby_regexp_pcre.c', line 210

static mrb_value
regexp_equal(mrb_state *mrb, mrb_value self)
{
  mrb_value other;
  struct mrb_regexp_pcre *self_reg, *other_reg;

  mrb_get_args(mrb, "o", &other);
  if (mrb_obj_equal(mrb, self, other)) {
    return mrb_true_value();
  }

  if (mrb_type(other) != MRB_TT_DATA || DATA_TYPE(other) != &mrb_regexp_type) {
    return mrb_false_value();
  }

  self_reg = (struct mrb_regexp_pcre *)DATA_PTR(self);
  other_reg = (struct mrb_regexp_pcre *)DATA_PTR(other);
  if (!self_reg || !other_reg) {
    mrb_raise(mrb, E_RUNTIME_ERROR, "Invalid Regexp");
  }

  if (mrb_str_equal(mrb, mrb_iv_get(mrb, self, mrb_intern_lit(mrb, "@source")),
                         mrb_iv_get(mrb, other, mrb_intern_lit(mrb, "@source")))) {
    return mrb_true_value();
  }

  return mrb_false_value();
}

#===(str) ⇒ Object 



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# File '.doc_tmp/iij/mruby-regexp-pcre/mrblib/regexp_pcre.rb', line 29

def ===(str)
  unless str.is_a? String
    if str.is_a? Symbol
      str = str.to_s
    else
      return false
    end
  end
  self.match(str) != nil
end

#=~(str) ⇒ Object 



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# File '.doc_tmp/iij/mruby-regexp-pcre/mrblib/regexp_pcre.rb', line 18

def =~(str)
  return nil unless str

  m = self.match(str)
  if m
    m.begin(0)
  else
    nil
  end
end

#casefold? ⇒ Boolean

Returns:

  • (Boolean) 


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# File '.doc_tmp/iij/mruby-regexp-pcre/mrblib/regexp_pcre.rb', line 40

def casefold?
  (@options & IGNORECASE) > 0
end

#get_disable_option_string ⇒ Object 



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# File '.doc_tmp/iij/mruby-regexp-pcre/mrblib/regexp_pcre.rb', line 75

def get_disable_option_string
  s = ""
  s += "m" if @options & MULTILINE == 0
  s += "i" if @options & IGNORECASE == 0
  s += "x" if @options & EXTENDED == 0
  s
end

#get_enable_option_string ⇒ Object 



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# File '.doc_tmp/iij/mruby-regexp-pcre/mrblib/regexp_pcre.rb', line 67

def get_enable_option_string
  s = ""
  s += "m" if @options & MULTILINE > 0
  s += "i" if @options & IGNORECASE > 0
  s += "x" if @options & EXTENDED > 0
  s
end

#inspect ⇒ Object 



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# File '.doc_tmp/iij/mruby-regexp-pcre/mrblib/regexp_pcre.rb', line 59

def inspect
  s = "/"
  s += @source
  s += "/"
  s += get_enable_option_string
  s
end

#match ⇒ Object 



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# File '.doc_tmp/iij/mruby-regexp-pcre/src/mruby_regexp_pcre.c', line 142

mrb_value
regexp_pcre_match(mrb_state *mrb, mrb_value self)
{
  struct mrb_matchdata *mrb_md;
  int rc;
  int ccount, matchlen;
  int *match;
  struct RClass *c;
  mrb_value md, str;
  int i;
  mrb_int pos;
  pcre_extra extra;
  struct mrb_regexp_pcre *reg;

  reg = (struct mrb_regexp_pcre *)mrb_get_datatype(mrb, self, &mrb_regexp_type);
  if (!reg)
    return mrb_nil_value();

  pos = 0;
  mrb_get_args(mrb, "S|i", &str, &pos);

  // XXX: RSTRING_LEN(str) >= pos ...

  rc = pcre_fullinfo(reg->re, NULL, PCRE_INFO_CAPTURECOUNT, &ccount);
  if (rc < 0) {
    /* fullinfo error */
    return mrb_nil_value();
  }
  matchlen = ccount + 1;
  match = mrb_malloc(mrb, sizeof(int) * matchlen * 3);

  extra.flags = PCRE_EXTRA_MATCH_LIMIT_RECURSION;
  extra.match_limit_recursion = 1000;
  rc = pcre_exec(reg->re, &extra, RSTRING_PTR(str), RSTRING_LEN(str), pos, 0, match, matchlen * 3);
  if (rc < 0) {
    mrb_free(mrb, match);
    return mrb_nil_value();
  }

  /* XXX: need current scope */
  mrb_obj_iv_set(mrb, (struct RObject *)mrb_class_real(RDATA(self)->c), mrb_intern_lit(mrb, "@last_match"), mrb_nil_value());

  c = mrb_class_get(mrb, "MatchData");
  md = mrb_funcall(mrb, mrb_obj_value(c), "new", 0);

  mrb_md = (struct mrb_matchdata *)mrb_get_datatype(mrb, md, &mrb_matchdata_type);
  mrb_md->ovector = match;
  mrb_md->length = matchlen;

  mrb_iv_set(mrb, md, mrb_intern_lit(mrb, "@regexp"), self);
  mrb_iv_set(mrb, md, mrb_intern_lit(mrb, "@string"), mrb_str_dup(mrb, str));
  /* XXX: need current scope */
  mrb_obj_iv_set(mrb, (struct RObject *)mrb_class_real(RDATA(self)->c), mrb_intern_lit(mrb, "@last_match"), md);

  mrb_gv_set(mrb, mrb_intern_lit(mrb, "$~"), md);
  mrb_gv_set(mrb, mrb_intern_lit(mrb, "$&"), mrb_funcall(mrb, md, "to_s", 0));
  mrb_gv_set(mrb, mrb_intern_lit(mrb, "$`"), mrb_funcall(mrb, md, "pre_match", 0));
  mrb_gv_set(mrb, mrb_intern_lit(mrb, "$'"), mrb_funcall(mrb, md, "post_match", 0));

  for (i = 1; i < 10; i++) {
    char sym[8];
    snprintf(sym, sizeof(sym), "$%d", i);
    mrb_gv_set(mrb, mrb_intern_cstr(mrb, sym), mrb_funcall(mrb, md, "[]", 1, mrb_fixnum_value(i)));
  }

  return md;
}

#match?(*args) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'gems/carbuncle-support/mrblib/regexp_compat.rb', line 2

def match?(*args)
  match(*args.map(&:to_s)).present?
end

#name_push(name, index) ⇒ Object

private



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# File '.doc_tmp/iij/mruby-regexp-pcre/mrblib/regexp_pcre.rb', line 143

def name_push(name, index)
  @names ||= {}
  @names[name.to_sym] = index - 1
end

#named_captures ⇒ Object 



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# File '.doc_tmp/iij/mruby-regexp-pcre/mrblib/regexp_pcre.rb', line 120

def named_captures
  h = {}
  if @names
    @names.each do |k, v|
      h[k.to_s] = [v + 1]
    end
  end
  h
end

#names ⇒ Object 



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# File '.doc_tmp/iij/mruby-regexp-pcre/mrblib/regexp_pcre.rb', line 130

def names
  if @names
    ar = Array.new(@names.size)
    @names.each do |k, v|
      ar[v] = k.to_s
    end
    ar
  else
    []
  end
end

#to_s ⇒ Object 



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# File '.doc_tmp/iij/mruby-regexp-pcre/mrblib/regexp_pcre.rb', line 44

def to_s
  s = "(?"
  s += get_enable_option_string

  if @options & MULTILINE == 0 or @options & IGNORECASE == 0 or @options & EXTENDED == 0
    s += "-"
    s += get_disable_option_string
  end

  s += ":"
  s += @source
  s += ")"
  s
end