/*
- * $Id: ext.c 36 2005-05-11 17:19:38Z tilman $
+ * $Id: ext.c 71 2005-07-16 12:28:17Z tilman $
*
* Copyright (c) 2005 Tilman Sauerbeck (tilman at code-monkey de)
*
#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) \
static VALUE c_close (VALUE self);
-static VALUE id_include;
+static VALUE cStream, cChunk,
+ eEetError, eNameError, ePropError,
+ sym_lossy, sym_level, sym_quality, sym_char, sym_short,
+ sym_long_long, sym_double;
+static ID id_include, id_serialize, id_keys, id_pack,
+ id_to_eet_chunks, id_to_eet_name, id_to_eet_properties,
+ id_tag, id_data;
static void
c_free (Eet_File **ef)
rb_raise (rb_eIOError, "cannot read entry - %s", ckey);
comp = rb_hash_new ();
- rb_hash_aset (comp, ID2SYM (rb_intern ("lossy")), INT2FIX (lossy));
- rb_hash_aset (comp, ID2SYM (rb_intern ("level")), INT2FIX (level));
- rb_hash_aset (comp, ID2SYM (rb_intern ("quality")), INT2FIX (quality));
+ rb_hash_aset (comp, sym_lossy, INT2FIX (lossy));
+ rb_hash_aset (comp, sym_level, INT2FIX (level));
+ rb_hash_aset (comp, sym_quality, INT2FIX (quality));
ret = rb_ary_new3 (5, rb_str_new (data, w * h * 4),
INT2FIX (w), INT2FIX (h),
if (!NIL_P (comp)) {
Check_Type (comp, T_HASH);
- tmp = rb_hash_aref (comp, ID2SYM (rb_intern ("lossy")));
+ tmp = rb_hash_aref (comp, sym_lossy);
if (!NIL_P (tmp))
lossy = FIX2INT (tmp);
- tmp = rb_hash_aref (comp, ID2SYM (rb_intern ("level")));
+ tmp = rb_hash_aref (comp, sym_level);
if (!NIL_P (tmp))
level = FIX2INT (tmp);
- tmp = rb_hash_aref (comp, ID2SYM (rb_intern ("quality")));
+ tmp = rb_hash_aref (comp, sym_quality);
if (!NIL_P (tmp))
quality = FIX2INT (tmp);
}
{
VALUE ret;
struct RArray *stream;
- static ID id_serialize;
long i;
- ret = rb_str_new2 ("");
-
stream = RARRAY (self);
if (!stream->len)
- return ret;
+ return rb_str_new2 ("");
- if (!id_serialize)
- id_serialize = rb_intern ("serialize");
+ ret = rb_ary_new ();
for (i = 0; i < stream->len; i++) {
- VALUE str = rb_funcall (stream->ptr[i], id_serialize, 0, NULL);
+ VALUE str;
+
+ str = rb_funcall (stream->ptr[i], id_serialize, 0, NULL);
- rb_str_append (ret, str);
+ rb_ary_push (ret, str);
}
- return ret;
+ return rb_ary_join (ret, Qnil);
+}
+
+static VALUE
+chunk_init (VALUE self, VALUE tag, VALUE data)
+{
+ long tag_len, data_len, tmp;
+
+ StringValue (tag);
+ StringValue (data);
+
+ if (rb_funcall (tag, id_include, 1, INT2FIX (0)) == Qtrue)
+ rb_raise (rb_eArgError, "tag must not contain binary zeroes");
+
+ /* libeet uses a signed 32bit integer to store the
+ * chunk size, so make sure we don't overflow it
+ */
+ tag_len = RSTRING (tag)->len;
+ data_len = RSTRING (data)->len;
+ tmp = tag_len + 1 + data_len;
+
+ if (tmp < tag_len || tmp < data_len || tmp < 1 || tmp >= 2147483647L)
+ rb_raise (rb_eArgError, "tag or data too long");
+
+ rb_ivar_set (self, id_tag, rb_str_dup_frozen (tag));
+ rb_ivar_set (self, id_data, rb_str_dup_frozen (data));
+
+ return self;
}
static VALUE
unsigned int size, buf_len;
unsigned char *buf;
struct RString *tag, *data;
- static ID id_tag, id_data;
-
- if (!id_tag)
- id_tag = rb_intern ("@tag");
-
- if (!id_data)
- id_data = rb_intern ("@data");
tmp = rb_ivar_get (self, id_tag);
- StringValue (tmp);
tag = RSTRING (tmp);
tmp = rb_ivar_get (self, id_data);
- StringValue (tmp);
data = RSTRING (tmp);
buf_len = 9 + tag->len + data->len;
return ret;
}
+static int
+for_each_prop (VALUE tag, VALUE arg, VALUE stream)
+{
+ VALUE value, type, tmp;
+
+ if (rb_obj_is_kind_of (arg, rb_cArray) == Qfalse)
+ rb_raise (ePropError, "hash value is not an array");
+
+ value = rb_ary_entry (arg, 0);
+ if (NIL_P (value))
+ return ST_CONTINUE;
+
+ type = rb_ary_entry (arg, 1);
+ tmp = rb_funcall (value, id_to_eet_chunks, 2, tag, type);
+
+ rb_ary_concat (stream, tmp);
+
+ return ST_CONTINUE;
+}
+
+/*
+ * call-seq:
+ * object.to_eet -> string
+ *
+ * Serializes the receiver to EET format.
+ */
+static VALUE
+c_to_eet (VALUE self)
+{
+ VALUE props, name, stream, chunk, args[2];
+#ifndef HAVE_RB_HASH_FOREACH
+ struct RArray *keys;
+ long i;
+#endif
+
+ props = rb_funcall (self, id_to_eet_properties, 0);
+
+ if (rb_obj_is_kind_of (props, rb_cHash) == Qfalse ||
+ !RHASH (props)->tbl->num_entries)
+ rb_raise (ePropError, "invalid EET properties");
+
+ name = rb_funcall (self, id_to_eet_name, 0);
+ StringValue (name);
+
+ if (!RSTRING (name)->len ||
+ rb_funcall (name, id_include, 1, INT2FIX (0)))
+ rb_raise (eNameError, "invalid EET name");
+
+ stream = rb_class_new_instance (0, NULL, cStream);
+
+#ifdef HAVE_RB_HASH_FOREACH
+ rb_hash_foreach (props, for_each_prop, stream);
+#else
+ keys = RARRAY (rb_funcall (props, id_keys, 0));
+
+ for (i = 0; i < keys->len; i++)
+ for_each_prop (keys->ptr[i],
+ rb_hash_aref (props, keys->ptr[i]),
+ stream);
+#endif
+
+ args[0] = name;
+ args[1] = rb_funcall (stream, id_serialize, 0);
+
+ rb_ary_clear (stream); /* give the GC a hand... */
+
+ chunk = rb_class_new_instance (2, args, cChunk);
+
+ 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, id_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");
+
+ 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
Init_eet_ext ()
{
rb_define_method (c, "read_image", c_read_image, 1);
rb_define_method (c, "write_image", c_write_image, -1);
- c = rb_define_class_under (m, "Stream", rb_cArray);
- rb_define_method (c, "serialize", stream_serialize, 0);
+ cStream = rb_define_class_under (m, "Stream", rb_cArray);
+ rb_define_method (cStream, "serialize", stream_serialize, 0);
+
+ cChunk = rb_define_class_under (m, "Chunk", rb_cObject);
+ rb_define_method (cChunk, "initialize", chunk_init, 2);
+ rb_define_method (cChunk, "serialize", chunk_serialize, 0);
+
+ rb_define_attr (cChunk, "tag", 1, 0);
+ rb_define_attr (cChunk, "data", 1, 0);
+
+ 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);
- c = rb_define_class_under (m, "Chunk", rb_cObject);
- rb_define_method (c, "serialize", chunk_serialize, 0);
+ 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);
id_include = rb_intern ("include?");
+ id_serialize = rb_intern ("serialize");
+ id_keys = rb_intern ("keys");
+ id_pack = rb_intern ("pack");
+ id_to_eet_chunks = rb_intern ("to_eet_chunks");
+ id_to_eet_name = rb_intern ("to_eet_name");
+ id_to_eet_properties = rb_intern ("to_eet_properties");
+ id_tag = rb_intern ("@tag");
+ id_data = rb_intern ("@data");
+ 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"));
}
projects / ruby-eet.git / blobdiff