Add bin and edit workflow

bin/gems/eventmachine-1.2.7/ext/fastfilereader/rubymain.cpp

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+/*****************************************************************************
+
+$Id: rubymain.cpp 4529 2007-07-04 11:32:22Z francis $
+
+File:     rubymain.cpp
+Date:     02Jul07
+
+Copyright (C) 2007 by Francis Cianfrocca. All Rights Reserved.
+Gmail: garbagecat10
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of either: 1) the GNU General Public License
+as published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version; or 2) Ruby's License.
+
+See the file COPYING for complete licensing information.
+
+*****************************************************************************/
+
+
+
+#include <iostream>
+#include <stdexcept>
+
+#include <ruby.h>
+#include "mapper.h"
+
+static VALUE EmModule;
+static VALUE FastFileReader;
+static VALUE Mapper;
+
+
+
+/*********
+mapper_dt
+*********/
+
+static void mapper_dt (void *ptr)
+{
+	if (ptr)
+		delete (Mapper_t*) ptr;
+}
+
+/**********
+mapper_new
+**********/
+
+static VALUE mapper_new (VALUE self, VALUE filename)
+{
+	Mapper_t *m = new Mapper_t (StringValueCStr (filename));
+	if (!m)
+		rb_raise (rb_eStandardError, "No Mapper Object");
+	VALUE v = Data_Wrap_Struct (Mapper, 0, mapper_dt, (void*)m);
+	return v;
+}
+
+
+/****************
+mapper_get_chunk
+****************/
+
+static VALUE mapper_get_chunk (VALUE self, VALUE start, VALUE length)
+{
+	Mapper_t *m = NULL;
+	Data_Get_Struct (self, Mapper_t, m);
+	if (!m)
+		rb_raise (rb_eStandardError, "No Mapper Object");
+
+	// TODO, what if some moron sends us a negative start value?
+	unsigned _start = NUM2INT (start);
+	unsigned _length = NUM2INT (length);
+	if ((_start + _length) > m->GetFileSize())
+		rb_raise (rb_eStandardError, "Mapper Range Error");
+
+	const char *chunk = m->GetChunk (_start);
+	if (!chunk)
+		rb_raise (rb_eStandardError, "No Mapper Chunk");
+	return rb_str_new (chunk, _length);
+}
+
+/************
+mapper_close
+************/
+
+static VALUE mapper_close (VALUE self)
+{
+	Mapper_t *m = NULL;
+	Data_Get_Struct (self, Mapper_t, m);
+	if (!m)
+		rb_raise (rb_eStandardError, "No Mapper Object");
+	m->Close();
+	return Qnil;
+}
+
+/***********
+mapper_size
+***********/
+
+static VALUE mapper_size (VALUE self)
+{
+	Mapper_t *m = NULL;
+	Data_Get_Struct (self, Mapper_t, m);
+	if (!m)
+		rb_raise (rb_eStandardError, "No Mapper Object");
+	return INT2NUM (m->GetFileSize());
+}
+
+
+/**********************
+Init_fastfilereaderext
+**********************/
+
+extern "C" void Init_fastfilereaderext()
+{
+	EmModule = rb_define_module ("EventMachine");
+	FastFileReader = rb_define_class_under (EmModule, "FastFileReader", rb_cObject);
+	Mapper = rb_define_class_under (FastFileReader, "Mapper", rb_cObject);
+
+	rb_define_module_function (Mapper, "new", (VALUE(*)(...))mapper_new, 1);
+	rb_define_method (Mapper, "size", (VALUE(*)(...))mapper_size, 0);
+	rb_define_method (Mapper, "close", (VALUE(*)(...))mapper_close, 0);
+	rb_define_method (Mapper, "get_chunk", (VALUE(*)(...))mapper_get_chunk, 2);
+}
+
+
+