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@@ -0,0 +1,142 @@
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+package log
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+
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+import "core:fmt";
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+import "core:os";
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+import "core:time";
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+
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+Level_Headers := []string{
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+ "[DEBUG] --- ",
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+ "[INFO ] --- ",
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+ "[WARN ] --- ",
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+ "[ERROR] --- ",
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+ "[FATAL] --- ",
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+};
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+
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+Default_Console_Logger_Opts :: Options{
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+ Option.Level,
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+ Option.Terminal_Color,
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+ Option.Short_File_Path,
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+ Option.Line,
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+ Option.Procedure,
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+} | Full_Timestamp_Opts;
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+
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+Default_File_Logger_Opts :: Options{
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+ Option.Level,
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+ Option.Short_File_Path,
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+ Option.Line,
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+ Option.Procedure,
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+} | Full_Timestamp_Opts;
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+
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+
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+File_Console_Logger_Data :: struct {
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+ lowest_level: Level,
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+ file_handle: os.Handle,
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+ ident : string,
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+}
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+
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+create_file_logger :: proc(h: os.Handle, lowest := Level.Debug, opt := Default_File_Logger_Opts, ident := "") -> Logger {
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+ data := new(File_Console_Logger_Data);
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+ data.lowest_level = lowest;
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+ data.file_handle = h;
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+ data.ident = ident;
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+ return Logger{file_console_logger_proc, data, opt};
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+}
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+
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+destroy_file_logger ::proc(log : ^Logger) {
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+ data := cast(^File_Console_Logger_Data)log.data;
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+ if data.file_handle != os.INVALID_HANDLE do os.close(data.file_handle);
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+ free(data);
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+ log^ = nil_logger();
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+}
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+
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+create_console_logger :: proc(lowest := Level.Debug, opt := Default_Console_Logger_Opts, ident := "") -> Logger {
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+ data := new(File_Console_Logger_Data);
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+ data.lowest_level = lowest;
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+ data.file_handle = os.INVALID_HANDLE;
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+ data.ident = ident;
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+ return Logger{file_console_logger_proc, data, opt};
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+}
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+
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+destroy_console_logger ::proc(log : ^Logger) {
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+ free(log.data);
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+ log^ = nil_logger();
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+}
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+
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+file_console_logger_proc :: proc(logger_data: rawptr, level: Level, text: string, options: Options, location := #caller_location) {
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+ data := cast(^File_Console_Logger_Data)logger_data;
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+ if level < data.lowest_level do return;
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+
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+ h : os.Handle;
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+ if(data.file_handle != os.INVALID_HANDLE) do h = data.file_handle;
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+ else do h = level <= Level.Error ? os.stdout : os.stderr;
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+ backing: [1024]byte; //NOTE(Hoej): 1024 might be too much for a header backing, unless somebody has really long paths.
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+ buf := fmt.string_buffer_from_slice(backing[:]);
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+
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+ do_level_header(options, level, &buf);
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+
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+ when time.IS_SUPPORTED {
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+ if Full_Timestamp_Opts & options != nil {
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+ fmt.sbprint(&buf, "[");
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+ t := time.now();
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+ y, m, d := time.date(t);
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+ h, min, s := time.clock(t);
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+ if Option.Date in options do fmt.sbprintf(&buf, "%d-%02d-%02d ", y, m, d);
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+ if Option.Time in options do fmt.sbprintf(&buf, "%02d:%02d:%02d", h, min, s);
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+ fmt.sbprint(&buf, "] ");
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+ }
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+ }
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+
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+ do_location_header(options, &buf, location);
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+
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+ if data.ident != "" do fmt.sbprintf(&buf, "[%s] ", data.ident);
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+ //TODO(Hoej): When we have better atomics and such, make this thread-safe
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+ fmt.fprintf(h, "%s %s\n", fmt.to_string(buf), text);
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+}
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+
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+do_level_header :: proc(opts : Options, level : Level, buf : ^fmt.String_Buffer) {
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+
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+ RESET :: "\x1b[0m";
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+ RED :: "\x1b[31m";
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+ YELLOW :: "\x1b[33m";
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+ DARK_GREY :: "\x1b[90m";
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+
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+ col := RESET;
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+ switch level {
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+ case Level.Debug : col = DARK_GREY;
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+ case Level.Info : col = RESET;
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+ case Level.Warning : col = YELLOW;
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+ case Level.Error, Level.Fatal : col = RED;
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+ }
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+
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+ if Option.Level in opts {
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+ if Option.Terminal_Color in opts do fmt.sbprint(buf, col);
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+ fmt.sbprint(buf, Level_Headers[level]);
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+ if Option.Terminal_Color in opts do fmt.sbprint(buf, RESET);
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+ }
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+}
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+
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+do_location_header :: proc(opts : Options, buf : ^fmt.String_Buffer, location := #caller_location) {
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+ if Location_Header_Opts & opts != nil do fmt.sbprint(buf, "["); else do return;
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+
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+ file := location.file_path;
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+ if Option.Short_File_Path in opts {
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+ when os.OS == "windows" do delimiter := '\\'; else do delimiter := '/';
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+ last := 0;
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+ for r, i in location.file_path do if r == delimiter do last = i+1;
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+ file = location.file_path[last:];
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+ }
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+
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+ if Location_File_Opts & opts != nil do fmt.sbprint(buf, file);
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+
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+ if Option.Procedure in opts {
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+ if Location_File_Opts & opts != nil do fmt.sbprint(buf, ".");
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+ fmt.sbprintf(buf, "%s()", location.procedure);
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+ }
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+
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+ if Option.Line in opts {
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+ if Location_File_Opts & opts != nil || Option.Procedure in opts do fmt.sbprint(buf, ":");
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+ fmt.sbprint(buf, location.line);
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+ }
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+
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+ fmt.sbprint(buf, "] ");
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+}
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