#ifndef LIMONP_LOGGING_HPP
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#define LIMONP_LOGGING_HPP
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#include <sstream>
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#include <iostream>
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#include <cassert>
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#include <cstdlib>
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#include <ctime>
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#ifdef XLOG
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#error "XLOG has been defined already"
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#endif // XLOG
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#ifdef XCHECK
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#error "XCHECK has been defined already"
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#endif // XCHECK
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#define XLOG(level) limonp::Logger(limonp::LL_##level, __FILE__, __LINE__).Stream()
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#define XCHECK(exp) if(!(exp)) XLOG(FATAL) << "exp: ["#exp << "] false. "
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namespace limonp {
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enum {
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LL_DEBUG = 0,
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LL_INFO = 1,
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LL_WARNING = 2,
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LL_ERROR = 3,
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LL_FATAL = 4,
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}; // enum
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static const char * LOG_LEVEL_ARRAY[] = {"DEBUG","INFO","WARN","ERROR","FATAL"};
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static const char * LOG_TIME_FORMAT = "%Y-%m-%d %H:%M:%S";
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class Logger {
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public:
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Logger(size_t level, const char* filename, int lineno)
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: level_(level) {
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#ifdef LOGGING_LEVEL
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if (level_ < LOGGING_LEVEL) {
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return;
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}
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#endif
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assert(level_ <= sizeof(LOG_LEVEL_ARRAY)/sizeof(*LOG_LEVEL_ARRAY));
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char buf[32];
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time_t timeNow;
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time(&timeNow);
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struct tm tmNow;
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#if defined(_WIN32) || defined(_WIN64)
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errno_t e = localtime_s(&tmNow, &timeNow);
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assert(e == 0);
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#else
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struct tm * tm_tmp = localtime_r(&timeNow, &tmNow);
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assert(tm_tmp != nullptr);
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#endif
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strftime(buf, sizeof(buf), LOG_TIME_FORMAT, &tmNow);
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stream_ << buf
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<< " " << filename
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<< ":" << lineno
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<< " " << LOG_LEVEL_ARRAY[level_]
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<< " ";
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}
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~Logger() {
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#ifdef LOGGING_LEVEL
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if (level_ < LOGGING_LEVEL) {
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return;
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}
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#endif
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std::cerr << stream_.str() << std::endl;
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if (level_ == LL_FATAL) {
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abort();
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}
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}
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std::ostream& Stream() {
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return stream_;
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}
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private:
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std::ostringstream stream_;
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size_t level_;
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}; // class Logger
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} // namespace limonp
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#endif // LIMONP_LOGGING_HPP
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