Wrap git_blob and its methods

The blob object has been wrapped together with the basic methods,

	- initialize
	- content=
	- content
	- size

Signed-off-by: Vicent Marti <tanoku@gmail.com>

ext/rugged/rugged.c

@@ -84,6 +84,7 @@ void Init_rugged()
 	Init_rugged_commit();
 	Init_rugged_tree();
 	Init_rugged_tag();
+	Init_rugged_blob();
 
 	Init_rugged_index();
 	Init_rugged_repo();

ext/rugged/rugged.h

@@ -49,6 +49,7 @@ void Init_rugged_object();
 void Init_rugged_commit();
 void Init_rugged_tree();
 void Init_rugged_tag();
+void Init_rugged_blob();
 void Init_rugged_index();
 void Init_rugged_repo();
 void Init_rugged_revwalk();

ext/rugged/rugged_blob.c

@@ -0,0 +1,86 @@
+/*
+ * The MIT License
+ *
+ * Copyright (c) 2010 Scott Chacon
+ * Copyright (c) 2010 Vicent Marti
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "rugged.h"
+
+extern VALUE rb_cRugged;
+extern VALUE rb_cRuggedObject;
+VALUE rb_cRuggedBlob;
+
+static VALUE rb_git_blob_allocate(VALUE klass)
+{
+	git_blob *blob = NULL;
+	return Data_Wrap_Struct(klass, NULL, NULL, blob);
+}
+
+static VALUE rb_git_blob_init(int argc, VALUE *argv, VALUE self)
+{
+	return rb_git_object_init(GIT_OBJ_BLOB, argc, argv, self);
+}
+
+static VALUE rb_git_blob_content_SET(VALUE self, VALUE rb_contents)
+{
+	git_blob *blob;
+	Data_Get_Struct(self, git_blob, blob);
+
+	Check_Type(rb_contents, T_STRING);
+	git_blob_set_rawcontent(blob, RSTRING_PTR(rb_contents), RSTRING_LEN(rb_contents));
+
+	return Qnil;
+}
+
+static VALUE rb_git_blob_content_GET(VALUE self)
+{
+	git_blob *blob;
+	int size;
+
+	Data_Get_Struct(self, git_blob, blob);
+
+	size = git_blob_rawsize(blob);
+	if (size == 0)
+		return rb_str_new2("");
+
+	return rb_str_new(git_blob_rawcontent(blob), size);
+}
+
+static VALUE rb_git_blob_rawsize(VALUE self)
+{
+	git_blob *blob;
+	Data_Get_Struct(self, git_blob, blob);
+
+	return INT2FIX(git_blob_rawsize(blob));
+}
+
+void Init_rugged_blob()
+{
+	rb_cRuggedBlob = rb_define_class_under(rb_cRugged, "Blob", rb_cRuggedObject);
+	rb_define_alloc_func(rb_cRuggedBlob, rb_git_blob_allocate);
+	rb_define_method(rb_cRuggedBlob, "initialize", rb_git_blob_init, -1);
+
+	rb_define_method(rb_cRuggedBlob, "size", rb_git_blob_rawsize, 0);
+
+	rb_define_method(rb_cRuggedBlob, "content", rb_git_blob_content_GET, 0);
+	rb_define_method(rb_cRuggedBlob, "content=", rb_git_blob_content_SET, 1);
+}

ext/rugged/rugged_object.c

@@ -80,6 +80,9 @@ VALUE rugged_object2rb(git_object *object)
 			break;
 
 		case GIT_OBJ_BLOB:
+			klass = rb_cRuggedBlob;
+			break;
+
 		default:
 			klass = rb_cRuggedObject;
 			break;