sp_test.cpp

来自「MySQL数据库开发源码 值得一看哦」· C++ 代码 · 共 96 行

/* Copyright (C) 2003 MySQL AB

   This program is free software; you can redistribute it and/or modify
   it under the terms of 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.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */

#include <ndb_global.h>

#include "SimpleProperties.hpp"
#include <NdbOut.hpp>

Uint32 page[8192];

int writer();
int reader(Uint32 *, Uint32 len);
int unpack(Uint32 *, Uint32 len);

int main(){ 
  int len = writer();
  reader(page, len);
  unpack(page, len);
  
  return 0; 
}

int
writer(){
  LinearWriter w(&page[0], 8192);
  
  w.first();
  w.add(1, 2);
  w.add(7, 3);
  w.add(3, "jonas");
  w.add(5, "0123456789");
  w.add(7, 4);
  w.add(3, "e cool");
  w.add(5, "9876543210");
  
  ndbout_c("WordsUsed = %d", w.getWordsUsed());
  
  return w.getWordsUsed();
}

int 
reader(Uint32 * pages, Uint32 len){
  SimplePropertiesLinearReader it(pages, len);
  
  it.printAll(ndbout);
  return 0;
}

struct Test {
  Uint32 val1;
  Uint32 val7;
  char val3[100];
  Test() : val1(0xFFFFFFFF), val7(0xFFFFFFFF) { sprintf(val3, "bad");}
};

static const
SimpleProperties::SP2StructMapping
test_map [] = {
  { 1, offsetof(Test, val1), SimpleProperties::Uint32Value, 0, ~0 },
  { 7, offsetof(Test, val7), SimpleProperties::Uint32Value, 0, ~0 },
  { 3, offsetof(Test, val3), SimpleProperties::StringValue, 0, sizeof(100) },
  { 5,                    0, SimpleProperties::InvalidValue, 0, 0 }
};

static unsigned
test_map_sz = sizeof(test_map)/sizeof(test_map[0]);

int 
unpack(Uint32 * pages, Uint32 len){
  Test test;
  SimplePropertiesLinearReader it(pages, len);
  SimpleProperties::UnpackStatus status;
  while((status = SimpleProperties::unpack(it, &test, test_map, test_map_sz, 
					   true, false)) == SimpleProperties::Break){
    ndbout << "test.val1 = " << test.val1 << endl;
    ndbout << "test.val7 = " << test.val7 << endl;
    ndbout << "test.val3 = " << test.val3 << endl;
    it.next();
  }
  assert(status == SimpleProperties::Eof);
  return 0;
}