//CSVReader.h
#define MAP_LINE std::map<:string :string=""> //key为首行字符串, value为此列字符串
#define MAP_CONTENT std::map //key为code, value为一行map
#define VEC_MAP std::vector<:pair int="">>
//csv文件读取器
class CSVReader
{
public:
CSVReader();
static CSVReader *getInst(); //获取实例
//解析csv. fileName:csv文件名,
void parse(const char *fileName);
//获取内容map. filename:文件名
const MAP_CONTENT &getContentMap(std::string filename);
//获取一行map.filename:文件名， code一行code
const MAP_LINE &getLineMap(std::string filename, int code);
//获取某行某列的值
const std::string &getByCode(std::string filename, int code, const std::string &key);
private:
//读取csv的一行.line:一行的内容
void readCSVLine(const char *line, int index);
VEC_MAP m_firstVector; //第一行的vector
MAP_CONTENT m_contentMap; //内容map
std::map<:string map_content=""> m_fileMap; //文件map
static CSVReader *m_inst; //实例
};,><:string>,>,>
//CSVReader.cpp
CSVReader *CSVReader::m_inst = NULL;
//构造函数
CSVReader::CSVReader()
{
m_firstVector.clear();
m_contentMap.clear();
m_fileMap.clear();
}
//获取实例
CSVReader *CSVReader::getInst()
{
if(!m_inst)
{m_inst = new CSVReader();}
return m_inst;
}
//获取内容map. filename:文件名
const MAP_CONTENT &CSVReader::getContentMap(std::string filename)
{
return m_fileMap.find(filename)->second;
}
//获取一行map.filename:文件名， code一行code
const MAP_LINE &CSVReader::getLineMap(std::string filename, int code)
{
return getContentMap(filename).find(code)->second;
}
//获取某行某列的值
const std::string &CSVReader::getByCode(std::string filename, int code, const std::string &key)
{
return getLineMap(filename, code).find(key)->second;
}
//解析csv. fileName:csv文件名,
void CSVReader::parse(const char *fileName)
{
m_contentMap.clear(); //首先进行清理
std::string path = fileName;
unsigned long size;
const char *data = (const char*)(cocos2d::CCFileUtils::sharedFileUtils()->getFileData(path.c_str(),"r" , &size));
CCAssert(data != NULL, "File is not exist.");
if (data == NULL)
return;
char line[32768]; //一行最多字节数
const char *src = data;
if (size == 0)
size = strlen(src);
char *pl = line; //指向line数组的指针
int index = 0;
bool skip = false; //若一行为空，skip则标记为true
while (data - src < size)
{
//读取到一行的末尾
if (*data == '\n' && !skip)
{
*pl = '\0';
readCSVLine(line, index);
++index;
pl = line;
}
else if (*data == '\r')
{}
else
{
//任何一个字段能留空
if (*data == '"')
skip = !skip;
*pl = *data;
++pl;
}
++data;
}
*pl = '\0';
//添加到map
m_fileMap.insert(std::map<:string map_content="">::value_type(fileName, m_contentMap));
}
//读取csv的一行.line:一行的内容
void CSVReader::readCSVLine(const char *line, int index)
{
char value[32768]; //一行最多字节数
if (*line == '\0')
return;
char *pv[32];
char *tv = value;
bool skip = false;
int count = 0;
*tv = '\0';
pv[count++] = tv;
while (*line != '\0')
{
if (*line == ',' && !skip)
{
*tv = '\0';
++tv;
pv[count++] = tv;
}
else if (*line == '"')
{
skip = !skip;
}
else
{
*tv = *line;
++tv;
}
++line;
}
*tv = '\0';
//临时数组
std::vector<:pair int=""> > tVector;
for (int i=0; i::value_type(pv[i], i));}
//第一行作为key
if(index == 0)
{m_firstVector = tVector;}
//第2行为注释
else if(index > 1)
{
//一行的map
std::map tmp;
for (int i = 0; i < m_firstVector.size(); i++)
{tmp.insert(std::map::value_type(m_firstVector[i].first, tVector[i].first));}
m_contentMap.insert(std::map>::value_type(atoi(tVector[0].first.c_str()), tmp));
}
}
,>,>,>;><:string>,>
//用法如下
bool HelloWorldScene::init()
{
//////////////////////////////
CSVReader::getInst()->parse("haha.csv");
MAP_LINE map_line = CSVReader::getInst()->getLineMap("haha.csv", 1000000);
MAP_LINE::iterator it = map_line.begin();
while (it != map_line.end())
{
CCLog("key:%s, value:%s", it->first.c_str(), it->second.c_str());
it++;
}
}
//csv表格数据如下图
