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#include "ruby.h"
static VALUE rb_cPathname;
static ID id_at_path, id_to_path;
static VALUE
get_strpath(VALUE obj)
{
VALUE strpath;
strpath = rb_ivar_get(obj, id_at_path);
if (TYPE(strpath) != T_STRING)
rb_raise(rb_eTypeError, "unexpected @path");
return strpath;
}
static void
set_strpath(VALUE obj, VALUE val)
{
rb_ivar_set(obj, id_at_path, val);
}
/*
* Create a Pathname object from the given String (or String-like object).
* If +path+ contains a NUL character (<tt>\0</tt>), an ArgumentError is raised.
*/
static VALUE
path_initialize(VALUE self, VALUE arg)
{
VALUE str;
if (TYPE(arg) == T_STRING) {
str = arg;
}
else {
str = rb_check_funcall(arg, id_to_path, 0, NULL);
if (str == Qundef)
str = arg;
StringValue(str);
}
if (memchr(RSTRING_PTR(str), '\0', RSTRING_LEN(str)))
rb_raise(rb_eArgError, "pathname contains null byte");
str = rb_obj_dup(str);
set_strpath(self, str);
OBJ_INFECT(self, str);
return self;
}
static VALUE
path_freeze(VALUE self)
{
rb_call_super(0, 0);
rb_str_freeze(get_strpath(self));
return self;
}
void
Init_pathname()
{
id_at_path = rb_intern("@path");
id_to_path = rb_intern("to_path");
rb_cPathname = rb_define_class("Pathname", rb_cObject);
rb_define_method(rb_cPathname, "initialize", path_initialize, 1);
rb_define_method(rb_cPathname, "freeze", path_freeze, 0);
}
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