Raise BadElementError if Stream#serialize is called on a bad Stream object.

[ruby-eet.git] / ext / ext.c

diff --git a/ext/ext.c b/ext/ext.c
index 4fd5e57f369d0d6a3ad0bf4621dae9380aa46401..8fe22e30e328c40ebb2fc4f3b12e0dc3e54863e9 100644 (file)
--- a/ext/ext.c
+++ b/ext/ext.c
@@ -1,5 +1,5 @@
 /*
- * $Id: ext.c 52 2005-06-02 18:29:51Z tilman $
+ * $Id: ext.c 62 2005-06-09 17:42:34Z tilman $
  *
  * Copyright (c) 2005 Tilman Sauerbeck (tilman at code-monkey de)
  *
@@ -26,6 +26,7 @@
 #include <Eet.h>
 #include <ruby.h>
 #include <st.h>
+#include <locale.h>
 
 #define CHECK_KEY(key) \
        if (rb_funcall (key, id_include, 1, INT2FIX (0)) == Qtrue) \
@@ -46,8 +47,10 @@
 static VALUE c_close (VALUE self);
 
 static VALUE cStream, cChunk,
-             eEetError, eNameError, ePropError,
-             sym_lossy, sym_level, sym_quality;
+             eEetError, eNameError, ePropError, eStreamError,
+             eBadElementError,
+             sym_lossy, sym_level, sym_quality, sym_char, sym_short,
+             sym_long_long, sym_double;
 static ID id_include, id_serialize, id_push, id_keys,
           id_to_eet_chunks, id_to_eet_name, id_to_eet_properties,
           id_tag, id_data;
@@ -448,7 +451,12 @@ stream_serialize (VALUE self)
                return ret;
 
        for (i = 0; i < stream->len; i++) {
-               VALUE str = rb_funcall (stream->ptr[i], id_serialize, 0, NULL);
+               VALUE str;
+
+               if (rb_obj_is_kind_of (stream->ptr[i], cChunk) == Qfalse)
+                       rb_raise (eBadElementError, "stream member is not a Chunk");
+
+               str = rb_funcall (stream->ptr[i], id_serialize, 0, NULL);
 
                rb_str_append (ret, str);
        }
@@ -545,7 +553,7 @@ for_each_prop (VALUE tag, VALUE arg, VALUE stream)
 }
 
 /*
- * :call-seq:
+ * call-seq:
  *  object.to_eet -> string
  *
  * Serializes the receiver to EET format.
@@ -589,9 +597,61 @@ c_to_eet (VALUE self)
        args[1] = rb_funcall (stream, id_serialize, 0);
        chunk = rb_class_new_instance (2, args, cChunk);
 
-       stream = rb_class_new_instance (1, &chunk, cStream);
+       return rb_funcall (chunk, id_serialize, 0);
+}
+
+static VALUE
+int_to_eet_chunks (int argc, VALUE *argv, VALUE self)
+{
+       VALUE tag, type = Qnil, ary, args[2], chunk;
+       char *cfmt = "V";
+
+       rb_scan_args (argc, argv, "11", &tag, &type);
+
+       ary = rb_ary_new3 (1, self);
+
+       if (type == sym_char)
+               cfmt = "c";
+       else if (type == sym_short)
+               cfmt = "v";
+       else if (type == sym_long_long)
+               cfmt = "q";
+
+       args[0] = tag;
+       args[1] = rb_funcall (ary, rb_intern ("pack"), 1, rb_str_new2 (cfmt));
+       chunk = rb_class_new_instance (2, args, cChunk);
+
+       return rb_ary_new3 (1, chunk);
+}
+
+static VALUE
+float_to_eet_chunks (int argc, VALUE *argv, VALUE self)
+{
+       VALUE tag, type = Qnil, args[2], chunk;
+       char buf[65], *loc;
+       double d;
+       int len;
+
+       rb_scan_args (argc, argv, "11", &tag, &type);
+
+       d = NUM2DBL (self);
+
+       /* switch locale to make sure we get proper snprintf output */
+       loc = setlocale (LC_NUMERIC, "C");
 
-       return rb_funcall (stream, id_serialize, 0);
+       len = snprintf (buf, sizeof (buf) - 1, "%a",
+                       type == sym_double ? d : (float) d);
+
+       if (loc)
+               setlocale (LC_NUMERIC, loc);
+
+       buf[++len] = '\0';
+
+       args[0] = tag;
+       args[1] = rb_str_new (buf, len);
+       chunk = rb_class_new_instance (2, args, cChunk);
+
+       return rb_ary_new3 (1, chunk);
 }
 
 void
@@ -625,9 +685,15 @@ Init_eet_ext ()
 
        rb_define_method (rb_cObject, "to_eet", c_to_eet, 0);
 
+       rb_define_method (rb_cInteger, "to_eet_chunks", int_to_eet_chunks, -1);
+       rb_define_method (rb_cFloat, "to_eet_chunks", float_to_eet_chunks, -1);
+
        eEetError = rb_define_class_under (m, "EetError", rb_eStandardError);
        eNameError = rb_define_class_under (m, "NameError", eEetError);
        ePropError = rb_define_class_under (m, "PropertyError", eEetError);
+       eStreamError = rb_define_class_under (m, "StreamError", eEetError);
+       eBadElementError = rb_define_class_under (m, "BadElementError",
+                                                 eStreamError);
 
        id_include = rb_intern ("include?");
        id_serialize = rb_intern ("serialize");
@@ -641,4 +707,8 @@ Init_eet_ext ()
        sym_lossy = ID2SYM (rb_intern ("lossy"));
        sym_level = ID2SYM (rb_intern ("level"));
        sym_quality =  ID2SYM (rb_intern ("quality"));
+       sym_char = ID2SYM (rb_intern ("char"));
+       sym_short = ID2SYM (rb_intern ("short"));
+       sym_long_long = ID2SYM (rb_intern ("long_long"));
+       sym_double = ID2SYM (rb_intern ("double"));
 }