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91 lines
2.9 KiB
C++
91 lines
2.9 KiB
C++
#pragma once
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#include <memory>
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#include <string>
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#include <vector>
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#define STRINGIFY_IMPL(x) #x
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#define STRINGIFY(x) STRINGIFY_IMPL(x)
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#define GET_FILE_NAME(x, y) GetFileNameFromAbsolutePath(__FILE__ x y)
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#define FILENAME_AND_LINE GET_FILE_NAME(":", STRINGIFY(__LINE__))
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// Calculate the filename at compile time from the path.
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// We just do this by scanning the path for the last '/' or '\' character and returning the string after it.
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constexpr const char* GetFileNameFromAbsolutePath(const char* path) {
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const char* file = path;
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while (*path) {
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char nextChar = *path++;
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if (nextChar == '/' || nextChar == '\\') {
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file = path;
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}
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}
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return file;
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}
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// These have to have a constexpr variable to store the filename_and_line result in a local variable otherwise
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// they will not be valid constexpr and will be evaluated at runtime instead of compile time!
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// The full string is still stored in the binary, however the offset of the filename in the absolute paths
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// is used in the instruction instead of the start of the absolute path.
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#define LOG(message, ...) do { auto str = FILENAME_AND_LINE; Game::logger->Log(str, message, ##__VA_ARGS__); } while(0)
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#define LOG_DEBUG(message, ...) do { auto str = FILENAME_AND_LINE; Game::logger->LogDebug(str, message, ##__VA_ARGS__); } while(0)
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#define LOG_TEST(message, ...) do { auto str = FILENAME_AND_LINE; Game::logger->LogDebug(str, message, ##__VA_ARGS__); Game::logger->Flush();} while(0)
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// Writer class for writing data to files.
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class Writer {
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public:
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Writer(bool enabled = true) : m_Enabled(enabled) {};
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virtual ~Writer();
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virtual void Log(const char* time, const char* message);
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virtual void Flush();
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void SetEnabled(bool disabled) { m_Enabled = disabled; }
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bool GetEnabled() const { return m_Enabled; }
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bool IsConsoleWriter() { return m_IsConsoleWriter; }
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public:
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bool m_Enabled = true;
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bool m_IsConsoleWriter = false;
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FILE* m_Outfile;
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};
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// FileWriter class for writing data to a file on a disk.
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class FileWriter : public Writer {
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public:
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FileWriter(const char* outpath);
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FileWriter(const std::string& outpath) : FileWriter(outpath.c_str()) {};
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private:
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std::string m_Outpath;
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};
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// ConsoleWriter class for writing data to the console.
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class ConsoleWriter : public Writer {
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public:
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ConsoleWriter(bool enabled);
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};
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class Logger {
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public:
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Logger() = delete;
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Logger(const std::string& outpath, bool logToConsole, bool logDebugStatements);
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void Log(const char* filenameAndLine, const char* format, ...);
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void LogDebug(const char* filenameAndLine, const char* format, ...);
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void Flush();
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bool GetLogToConsole() const;
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void SetLogToConsole(bool logToConsole);
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void SetLogDebugStatements(bool logDebugStatements) { m_logDebugStatements = logDebugStatements; }
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private:
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void vLog(const char* format, va_list args);
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bool m_logDebugStatements;
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std::vector<std::unique_ptr<Writer>> m_Writers;
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};
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