将XLS文件导成Sqlite数据库文件(一)

使用的XLS解析库

BasicExcel

头文件:

[cpp]
#pragma once

namespace YExcel
{
class BasicExcelWorksheet;
}

struct sqlite3;

class XlsToSqlite
{
public:
XlsToSqlite(void);
virtual ~XlsToSqlite(void);

void convert(const char* xlsFile, const char* sqlLiteFile);

private:

void parserSheet(YExcel::BasicExcelWorksheet* sheet);

int createTable(YExcel::BasicExcelWorksheet* sheet);

int insertValue(YExcel::BasicExcelWorksheet* sheet);

private:

sqlite3* db;
};

cpp:
[cpp]
#include "StdAfx.h"

#include "XlsToSqlite.h"
#include "BasicExcel.hpp"
#include "sqlite3.h"
#include
#include

std::wstring s2ws(const std::string& s)
{
int len;
int slength = (int)s.length() + 1;
len = MultiByteToWideChar(CP_ACP, 0, s.c_str(), slength, 0, 0);
std::wstring r(len, L'\0');
MultiByteToWideChar(CP_ACP, 0, s.c_str(), slength, &r[0], len);
return r;
}

std::string ws2s(const std::wstring& s)
{
string result;
//获取缓冲区大小，并申请空间，缓冲区大小事按字节计算的
int len = WideCharToMultiByte(CP_ACP, 0, s.c_str(), s.size(), NULL, 0, NULL, NULL);
char* buffer = new char[len + 1];
//宽字节编码转换成多字节编码
WideCharToMultiByte(CP_ACP, 0, s.c_str(), s.size(), buffer, len, NULL, NULL);
buffer[len] = '\0';
//删除缓冲区并返回值
result.append(buffer);
delete[] buffer;
return result;
}

using namespace YExcel;

XlsToSqlite::XlsToSqlite(void)
{
}


XlsToSqlite::~XlsToSqlite(void)
{
}

void XlsToSqlite::convert(const char* xlsFile, const char* sqlLiteFile)
{

BasicExcel e;

// 加载excel
if (!e.Load(xlsFile))
{
MessageBox(NULL, (std::string("打开XLS文件:'") + xlsFile + std::string("'错误，请确认文件是否存在，或者被其它程序打开")).c_str(), "错误", MB_OK);
return;
}

DeleteFile(sqlLiteFile);

// 加载SQLite
int res = sqlite3_open(sqlLiteFile, &db);

if( res ){
MessageBox(NULL, (std::string("Can't open database: ") + sqlite3_errmsg(db)).c_str(), "", MB_OK);
sqlite3_close(db);
return;
}
size_t maxSheets = e.GetTotalWorkSheets();
for (size_t i = 0; i < maxSheets; ++i)
{
this->parserSheet(e.GetWorksheet(i));
}
sqlite3_close(db);
}

// ======================================================================================
void XlsToSqlite::parserSheet(YExcel::BasicExcelWorksheet* sheet)
{
if (NULL == sheet)
{
return;
}

// 得到行和列的数量
size_t maxRows = sheet->GetTotalRows();
size_t maxCols = sheet->GetTotalCols();
ASSERT(maxCols > 0);

if (this->createTable(sheet))
{
this->insertValue(sheet);
}
}

// ======================================================================================
int XlsToSqlite::createTable(YExcel::BasicExcelWorksheet* sheet)
{

// 得到表名
std::string tableName = ws2s(sheet->GetUnicodeSheetName());
size_t maxCols = sheet->GetTotalCols();
char* errMsg = NULL;

// 删除
std::string SQL = "DROP TABLE ";
SQL += tableName;
int res= sqlite3_exec(db , SQL.c_str() , 0 , 0 , &errMsg);
if (res != SQLITE_OK)
{
std::cout << "执行SQL 出错." << errMsg << std::endl;
}

SQL.clear();
SQL = "CREATE TABLE " + tableName + " (";
for (size_t c = 0; c < maxCols; ++c) // 得到字段名
{
BasicExcelCell* cell = sheet->Cell(0, c);
if(cell->Type() == BasicExcelCell::UND