util.h

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// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2017 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.

#ifndef FABCOIN_UTIL_H
#define FABCOIN_UTIL_H

#if defined(HAVE_CONFIG_H)
#include <config/fabcoin-config.h>
#endif

#include <compat.h>
#include <fs.h>
#include <sync.h>
#include <tinyformat.h>
#include <utiltime.h>

#include <atomic>
#include <exception>
#include <map>
#include <stdint.h>
#include <string>
#include <vector>

#include <boost/signals2/signal.hpp>

#ifndef WIN32
#include <sys/types.h>
#include <sys/time.h>
#include <sys/resource.h>
#endif

// Application startup time (used for uptime calculation)
int64_t GetStartupTime();

static const bool DEFAULT_LOGTIMEMICROS = false;
static const bool DEFAULT_LOGIPS        = false;
static const bool DEFAULT_LOGTIMESTAMPS = true;

class CTranslationInterface
{
public:
    boost::signals2::signal<std::string (const char* psz)> Translate;
};

extern bool fPrintToConsole;
extern bool fPrintToDebugLog;

extern bool fLogTimestamps;
extern bool fLogTimeMicros;
extern bool fLogIPs;
extern std::atomic<bool> fReopenDebugLog;
extern CTranslationInterface translationInterface;

extern const char * const FABCOIN_CONF_FILENAME;
extern const char * const FABCOIN_PID_FILENAME;

extern std::atomic<uint32_t> logCategories;

inline std::string _(const char* psz)
{
    boost::optional<std::string> rv = translationInterface.Translate(psz);
    return rv ? (*rv) : psz;
}

void SetupEnvironment();
bool SetupNetworking();

struct CLogCategoryActive
{
    std::string category;
    bool active;
};

namespace BCLog {
    enum LogFlags : uint32_t {
        NONE        = 0,
        NET         = (1 <<  0),
        TOR         = (1 <<  1),
        MEMPOOL     = (1 <<  2),
        HTTP        = (1 <<  3),
        BENCH       = (1 <<  4),
        ZMQ         = (1 <<  5),
        DB          = (1 <<  6),
        RPC         = (1 <<  7),
        ESTIMATEFEE = (1 <<  8),
        ADDRMAN     = (1 <<  9),
        SELECTCOINS = (1 << 10),
        REINDEX     = (1 << 11),
        CMPCTBLOCK  = (1 << 12),
        RAND        = (1 << 13),
        PRUNE       = (1 << 14),
        PROXY       = (1 << 15),
        MEMPOOLREJ  = (1 << 16),
        LIBEVENT    = (1 << 17),
        COINDB      = (1 << 18),
        QT          = (1 << 19),
        LEVELDB     = (1 << 20),

        HTTPPOLL    = (1 << 22),
        POW         = (1 << 30),
        ALL         = ~(uint32_t)0,
    };
}

bool LogAcceptCategoryChar(const char* category);

static inline bool LogAcceptCategory(uint32_t category)
{
    return (logCategories.load(std::memory_order_relaxed) & category) != 0;
}

std::string ListLogCategories();

std::vector<CLogCategoryActive> ListActiveLogCategories();

bool GetLogCategory(uint32_t *f, const std::string *str);

//int LogPrintStr(const std::string &str );
int LogPrintStr(const std::string &str, bool useVMLog = false); // fasc

template<typename... Args> std::string FormatStringFromLogArgs(const char *fmt, const Args&... args) { return fmt; }

static inline void MarkUsed() {}
template<typename T, typename... Args> static inline void MarkUsed(const T& t, const Args&... args)
{
    (void)t;
    MarkUsed(args...);
}

#ifdef USE_COVERAGE
#define LogPrintf(...) do { MarkUsed(__VA_ARGS__); } while(0)
#define LogPrint(category, ...) do { MarkUsed(__VA_ARGS__); } while(0)
#else
#define LogPrintf(...) do { \
    std::string _log_msg_; /* Unlikely name to avoid shadowing variables */ \
    try { \
        _log_msg_ = tfm::format(__VA_ARGS__); \
    } catch (tinyformat::format_error &fmterr) { \
        /* Original format string will have newline so don't add one here */ \
        _log_msg_ = "Error \"" + std::string(fmterr.what()) + "\" while formatting log message: " + FormatStringFromLogArgs(__VA_ARGS__); \
    } \
    LogPrintStr(_log_msg_); \
} while(0)

#define LogPrint(category, ...) do { \
    if (LogAcceptCategory((category))) { \
        LogPrintf(__VA_ARGS__); \
    } \
} while(0)
#endif

#define LogPrintChar(category, ...) do { \
    if (LogAcceptCategoryChar((category))) { \
        LogPrintStr(tfm::format(__VA_ARGS__)); \
    } \
} while(0)

template<typename... Args>
bool error(const char* fmt, const Args&... args)
{
    LogPrintStr("ERROR: " + tfm::format(fmt, args...) + "\n");
    return false;
}

void PrintExceptionContinue(const std::exception *pex, const char* pszThread);
void FileCommit(FILE *file);
bool TruncateFile(FILE *file, unsigned int length);
int RaiseFileDescriptorLimit(int nMinFD);
void AllocateFileRange(FILE *file, unsigned int offset, unsigned int length);
bool RenameOver(fs::path src, fs::path dest);
bool TryCreateDirectories(const fs::path& p);
fs::path GetDefaultDataDir();
const fs::path &GetDataDir(bool fNetSpecific = true);
void ClearDatadirCache();
fs::path GetConfigFile(const std::string& confPath);
#ifndef WIN32
fs::path GetPidFile();
void CreatePidFile(const fs::path &path, pid_t pid);
#endif
#ifdef WIN32
fs::path GetSpecialFolderPath(int nFolder, bool fCreate = true);
#endif
void OpenDebugLog();
void ShrinkDebugFile();
void runCommand(const std::string& strCommand);

inline bool IsSwitchChar(char c)
{
#ifdef WIN32
    return c == '-' || c == '/';
#else
    return c == '-';
#endif
}

class ArgsManager
{
protected:
    CCriticalSection cs_args;
    std::map<std::string, std::string> mapArgs;
    std::map<std::string, std::vector<std::string> > mapMultiArgs;
public:
    void ParseParameters(int argc, const char*const argv[]);
    void ReadConfigFile(const std::string& confPath);
    std::vector<std::string> GetArgs(const std::string& strArg);

    bool IsArgSet(const std::string& strArg);

    std::string GetArg(const std::string& strArg, const std::string& strDefault);

    int64_t GetArg(const std::string& strArg, int64_t nDefault);

    bool GetBoolArg(const std::string& strArg, bool fDefault);

    bool SoftSetArg(const std::string& strArg, const std::string& strValue);

    bool SoftSetBoolArg(const std::string& strArg, bool fValue);

    // Forces an arg setting. Called by SoftSetArg() if the arg hasn't already
    // been set. Also called directly in testing.
    void ForceSetArg(const std::string& strArg, const std::string& strValue);
};

extern ArgsManager gArgs;

std::string HelpMessageGroup(const std::string& message);

std::string HelpMessageOpt(const std::string& option, const std::string& message);

int GetNumCores();

void SetThreadPriority(int nPriority);
void RenameThread(const char* name);

template <typename Callable> void TraceThread(const char* name,  Callable func)
{
    std::string s = strprintf("fabcoin-%s", name);
    RenameThread(s.c_str());
    try
    {
        LogPrintf("%s thread start\n", name);
        func();
        LogPrintf("%s thread exit\n", name);
    }
    catch (const boost::thread_interrupted&)
    {
        LogPrintf("%s thread interrupt\n", name);
        throw;
    }
    catch (const std::exception& e) {
        PrintExceptionContinue(&e, name);
        throw;
    }
    catch (...) {
        PrintExceptionContinue(nullptr, name);
        throw;
    }
}

std::string CopyrightHolders(const std::string& strPrefix);

bool CheckHex(const std::string& str);
#endif // FABCOIN_UTIL_H