eic-opticks/sysrap/slog.h

0001 #pragma once
0002 /**
0003 slog.h
0004 ========
0005
0006 See notes/issues/logging_from_headeronly_impls.rst
0007
0008
0009 **/
0010
0011 #include <cstdlib>
0012 #include <cstring>
0013 #include <sstream>
0014 #include <iostream>
0015
0016 #include "plog/Severity.h"
0017 #include <plog/Log.h>
0018
0019 using plog::fatal ;
0020 using plog::error ;
0021 using plog::warning ;
0022 using plog::info ;
0023 using plog::debug ;
0024 using plog::verbose ;
0025
0026
0027 struct slog
0028 {
0029     static plog::Severity envlevel( const char* key, const char* fallback);
0030     static std::string Desc(plog::Severity level) ;
0031     static std::string Dump() ;
0032 };
0033
0034 inline plog::Severity slog::envlevel(const char* key, const char* fallback)
0035 {
0036     const char* val = getenv(key);
0037     const char* level = val ? val : fallback ;
0038     plog::Severity severity = plog::severityFromString(level) ;
0039
0040     if(strcmp(level, fallback) != 0)
0041     {
0042         std::cerr
0043             << "slog::envlevel"
0044             << " adjusting loglevel by envvar  "
0045             << " key " << key
0046             << " val " << val
0047             << " fallback " << fallback
0048             << " level " << level
0049             << " severity " << severity
0050             << std::endl
0051             ;
0052     }
0053     return severity ;
0054 }
0055
0056 inline std::string slog::Desc(plog::Severity level) // static
0057 {
0058     std::stringstream ss ;
0059     ss << "slog::Desc"
0060        << " level:" << level
0061        << " plog::severityToString(level):" << plog::severityToString(level)
0062        << std::endl
0063        ;
0064     std::string str = ss.str();
0065     return str ;
0066 }
0067 inline std::string slog::Dump() // static
0068 {
0069     std::stringstream ss ;
0070     ss
0071         << " slog::dump " << std::endl
0072         << " plog::none    " << plog::none << std::endl
0073         << " plog::fatal   " << plog::fatal << std::endl
0074         << " plog::error   " << plog::error << std::endl
0075         << " plog::warning " << plog::warning << std::endl
0076         << " plog::info    " << plog::info << std::endl
0077         << " plog::debug   " << plog::debug << std::endl
0078         << " plog::verbose " << plog::verbose << std::endl
0079         ;
0080
0081     std::string str = ss.str();
0082     return str ;
0083 }
0084
0085
0086