/** * 从文件中 读取 protocol 的内容 写入缓存 * 供外部方法使用 * Alex Liu, 2014 */ #pragma once #include <vector> #include <map> #include <list> #include <string> using namespace std; #define MAX_FILEPATH 512 #define COMMENT_FLG '#' #define SECTION_BEGIN_FLG '[' #define SECTION_END_FLG  ']' class ReadProtocol { public:  ReadProtocol(char* FilePath);  ~ReadProtocol();  /**  * 返回值为 errMsg 的地址 为了方便链式调用  * 缺省返回 "成功"  */  char* GetErrInfo(char* errMsg, int errNo = 0);  /**  * 逐行读取文件内容 写入 m_StrVect  * 使用 vector::push_back() 写入  * return 0 成功 < 0 失败 可根据返回值 GetErrInfo  */  int ReadIniFile();  /**  * 获取根据目录获取一个  * 使用 vector::push_back() 写入  * return 0 成功 < 0 失败 可根据返回值 GetErrInfo  */  int GetOneSection(string Section, list<string> &Protocol); private:  void PushBackToVector(string oneLine); private:  char m_IniFile[MAX_FILEPATH];  string m_ErrPos;  map<string, unsigned int> m_SectionMap;  vector<string> m_StrVect; };

// //#include "stdafx.h" #include <fstream> #include "ReadProtocol.h" //去掉字符串首尾的空格 static string strTrim(string aStr) {     string s = aStr;     unsigned int first, last;     if (string::npos != (first = s.find_first_not_of(' ') ))         s = s.substr(first, s.length()-first);     if (string::npos != (last = s.find_last_not_of(' ') ))         s = s.substr(0, last+1);     return s; } ///===================================================================================== ReadProtocol::ReadProtocol(char* FilePath) {  int iLen = (strlen(FilePath) > MAX_FILEPATH) ? MAX_FILEPATH : strlen(FilePath);  memset(m_IniFile, 0, MAX_FILEPATH);  memcpy(m_IniFile, FilePath, iLen); } ReadProtocol::~ReadProtocol() {  m_SectionMap.clear();  m_StrVect.clear(); } int ReadProtocol::GetOneSection(string Section, list<string> &Protocol) {  unsigned int Start = 0;  // 注意这里不能使用 [] 运算符  map<string, unsigned int>::iterator itr = m_SectionMap.find(Section);  if (m_SectionMap.end() == itr)  {   m_ErrPos = Section;   return -5;   // Unknown Section!!  }  else  {   Start = itr->second;  }  vector<string>::iterator it = m_StrVect.begin() + Start + 1;  for (; it!=m_StrVect.end(); ++it)  {   unsigned int First, Last;   First = it->find_first_of ( SECTION_BEGIN_FLG );   Last = it->find_last_of ( SECTION_END_FLG );   // stop when the next Section   if( string::npos != First && string::npos != Last)   {    break;   }   Protocol.push_back(*it);  }  return (int)Protocol.size(); } int ReadProtocol::ReadIniFile() {  ifstream fin(m_IniFile);  if (!fin.is_open())  {   return -1; //can'topen file  }  string strLine;  unsigned int Last;  while (std::getline(fin, strLine).good())  {   if ( string::npos !=(Last = strLine.find_last_not_of('\r') ))   {    //delete \r    strLine = strLine.substr(0, Last + 1);   }   PushBackToVector(strLine);  }  fin.close();  if (m_StrVect.empty())  {   return -2; //get noting from file  }  return 0; } void ReadProtocol::PushBackToVector(string oneLine) {  unsigned int uPos;  //去掉行尾注释  if ( string::npos != (uPos = oneLine.find_first_of( COMMENT_FLG ) ) )  {   oneLine = oneLine.substr(0, uPos + 1);  }  //去首尾空格  oneLine = strTrim(oneLine);  if (oneLine.empty() || oneLine.length() < 2) return;  //一行只能有一条记录  unsigned int First, Last;  First = oneLine.find_first_of(SECTION_BEGIN_FLG);  Last = oneLine.find_last_of(SECTION_END_FLG);  // is Section  if( string::npos != First && string::npos != Last)  {   m_SectionMap[ oneLine.substr(First + 1, Last - First - 1) ] = m_StrVect.size();  }  m_StrVect.push_back(oneLine); } char* ReadProtocol::GetErrInfo(char* errMsg, int errNo) {  string errInfo;  switch (errNo)  {  case 0:   {    errInfo = "Success!";    break;   }  case -1:   {    char Path[1024] = {0};    int pLength = 1024;    GetCurrentDirectory(pLength, Path);    errInfo.append("Can't open file. The file name is:==>\"");    errInfo.append( m_IniFile);    errInfo.append("\"\r\nMaybe no such file in Path:");    errInfo.append(Path);    break;   }  case -2:   {    errInfo = "Get noting from file: ";    errInfo.append(m_IniFile);    break;   }  case -3:   {    errInfo = "Analyze file failed. In ==> ";    errInfo.append(m_ErrPos);    break;   }  case -5:   {    errInfo = "\r\nUnknown Section!! ==> \"[";    errInfo.append(m_ErrPos);    errInfo.append("]\"\r\n请检查配置文件中是否有遗漏。");    break;   }  default:   {    errInfo = "请按照正确步骤使用";   }  }  memcpy(errMsg, errInfo.c_str(), errInfo.length());  return errMsg; }