141 lines
4.1 KiB
C++
141 lines
4.1 KiB
C++
/*************************************************************************
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> File Name : CJudgeUtils.h
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> Author : FengChao
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> EMail : smile.fengchao@gmail.com
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> Created Time : Fri 17 Jul 2020 09:34:47 AM CST
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************************************************************************/
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#ifndef _JUDGE_COMMON_H_
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#define _JUDGE_COMMON_H_
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#include <iostream>
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#include <cstdio>
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#include <map>
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#include <set>
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#include <string>
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#include <stdint.h>
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#include <pthread.h>
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#include <mutex>
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#include <memory>
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#include "CLog.h"
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class CNonCopyable
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{
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protected:
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CNonCopyable() {}
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~CNonCopyable() {}
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private:
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CNonCopyable(const CNonCopyable &);
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const CNonCopyable& operator=(const CNonCopyable &);
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};
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class CMutexLockGuard:CNonCopyable
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{
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public:
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explicit CMutexLockGuard(pthread_mutex_t& mutex)
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: m_mutex(mutex)
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{
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pthread_mutex_lock(&m_mutex);
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}
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~CMutexLockGuard()
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{
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pthread_mutex_unlock(&m_mutex);
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}
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private:
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pthread_mutex_t& m_mutex;
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};
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template<class T>
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class CSingleton
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{
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private:
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static std::once_flag SingletonFlag;
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static std::unique_ptr<T> Instance;
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protected:
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CSingleton() = default;
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CSingleton(const T&) = delete;
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CSingleton& operator=(const T&) = delete;
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public:
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static T& GetInstance()
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{
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std::call_once(SingletonFlag, [=]() {
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Instance.reset(new T);
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});
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return *(Instance.get());
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}
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};
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template <class T> std::unique_ptr<T> CSingleton <T>::Instance = nullptr;
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template <class T> std::once_flag CSingleton <T>::SingletonFlag;
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class INIReader
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{
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public:
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explicit INIReader() {}
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~INIReader() {}
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/// @brief 解析文件
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/// @return 0 成功
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/// @return <0 失败
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/// @note 每次调用会清除上一次的解析结果
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int32_t Parse(const std::string& filename);
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void Clear();
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/// @brief 获取string类型字段的值，字段未配置时使用默认值
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std::string Get(const std::string& section, const std::string& name,
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const std::string& default_value);
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// Get an integer (long) value from INI file, returning default_value
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// if not found or not a valid integer (decimal "1234", "-1234",
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// or hex "0x4d2").
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int32_t GetInt32(const std::string& section, const std::string& name,
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int32_t default_value);
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uint32_t GetUInt32(const std::string& section, const std::string& name,
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uint32_t default_value);
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int64_t GetInt64(const std::string& section, const std::string& name,
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int64_t default_value);
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uint64_t GetUInt64(const std::string& section, const std::string& name,
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uint64_t default_value);
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// Get a real (floating point double) value from INI file, returning
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// default_value if not found or not a valid floating point value
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// according to strtod().
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double GetReal(const std::string& section, const std::string& name, double default_value);
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// Get a boolean value from INI file, returning default_value
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// if not found or if not a valid true/false value. Valid true
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// values are "true", "yes", "on", "1", and valid false values are
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// "false", "no", "off", "0" (not case sensitive).
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bool GetBoolean(const std::string& section, const std::string& name, bool default_value);
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// Returns all the section names from the INI file, in alphabetical order,
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// but in the original casing
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const std::set<std::string>& GetSections() const;
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// Returns all the field names from a section in the INI file, in
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// alphabetical order, but in the original casing. Returns an
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// empty set if the field name is unknown
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std::set<std::string> GetFields(const std::string& section);
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/// @brief 返回最后错误字符串描述
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/// @return 最后一次错误的信息
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const char* GetLastError() const { return m_last_error; }
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private:
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int32_t ParseFile(FILE* file);
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private:
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char m_last_error[256];
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std::set<std::string> m_sections;
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std::map<std::string, std::map<std::string, std::string> > m_fields;
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};
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#endif
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