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package log
import "core:fmt";
import "core:strings";
import "core:os";
import "core:time";
Level_Headers := [?]string{
0..<10 = "[DEBUG] --- ",
10..<20 = "[INFO ] --- ",
20..<30 = "[WARN ] --- ",
30..<40 = "[ERROR] --- ",
40..<50 = "[FATAL] --- ",
};
Default_Console_Logger_Opts :: Options{
.Level,
.Terminal_Color,
.Short_File_Path,
.Line,
.Procedure,
} | Full_Timestamp_Opts;
Default_File_Logger_Opts :: Options{
.Level,
.Short_File_Path,
.Line,
.Procedure,
} | Full_Timestamp_Opts;
File_Console_Logger_Data :: struct {
file_handle: os.Handle,
ident: string,
}
create_file_logger :: proc(h: os.Handle, lowest := Level.Debug, opt := Default_File_Logger_Opts, ident := "") -> Logger {
data := new(File_Console_Logger_Data);
data.file_handle = h;
data.ident = ident;
return Logger{file_console_logger_proc, data, lowest, opt};
}
destroy_file_logger :: proc(log: ^Logger) {
data := cast(^File_Console_Logger_Data)log.data;
if data.file_handle != os.INVALID_HANDLE {
os.close(data.file_handle);
}
free(data);
}
create_console_logger :: proc(lowest := Level.Debug, opt := Default_Console_Logger_Opts, ident := "") -> Logger {
data := new(File_Console_Logger_Data);
data.file_handle = os.INVALID_HANDLE;
data.ident = ident;
return Logger{file_console_logger_proc, data, lowest, opt};
}
destroy_console_logger :: proc(log: ^Logger) {
free(log.data);
}
file_console_logger_proc :: proc(logger_data: rawptr, level: Level, text: string, options: Options, location := #caller_location) {
data := cast(^File_Console_Logger_Data)logger_data;
h: os.Handle = os.stdout if level <= Level.Error else os.stderr;
if data.file_handle != os.INVALID_HANDLE {
h = data.file_handle;
}
backing: [1024]byte; //NOTE(Hoej): 1024 might be too much for a header backing, unless somebody has really long paths.
buf := strings.builder_from_slice(backing[:]);
do_level_header(options, level, &buf);
when time.IS_SUPPORTED {
if Full_Timestamp_Opts & options != nil {
fmt.sbprint(&buf, "[");
t := time.now();
y, m, d := time.date(t);
h, min, s := time.clock(t);
if .Date in options { fmt.sbprintf(&buf, "%d-%02d-%02d ", y, m, d); }
if .Time in options { fmt.sbprintf(&buf, "%02d:%02d:%02d", h, min, s); }
fmt.sbprint(&buf, "] ");
}
}
do_location_header(options, &buf, location);
if .Thread_Id in options {
// NOTE(Oskar): not using context.thread_id here since that could be
// incorrect when replacing context for a thread.
fmt.sbprintf(&buf, "[{}] ", os.current_thread_id());
}
if data.ident != "" {
fmt.sbprintf(&buf, "[%s] ", data.ident);
}
//TODO(Hoej): When we have better atomics and such, make this thread-safe
fmt.fprintf(h, "%s %s\n", strings.to_string(buf), text);
}
do_level_header :: proc(opts: Options, level: Level, str: ^strings.Builder) {
RESET :: "\x1b[0m";
RED :: "\x1b[31m";
YELLOW :: "\x1b[33m";
DARK_GREY :: "\x1b[90m";
col := RESET;
switch level {
case .Debug: col = DARK_GREY;
case .Info: col = RESET;
case .Warning: col = YELLOW;
case .Error, .Fatal: col = RED;
}
if .Level in opts {
if .Terminal_Color in opts {
fmt.sbprint(str, col);
}
fmt.sbprint(str, Level_Headers[level]);
if .Terminal_Color in opts {
fmt.sbprint(str, RESET);
}
}
}
do_location_header :: proc(opts: Options, buf: ^strings.Builder, location := #caller_location) {
if Location_Header_Opts & opts == nil {
return;
}
fmt.sbprint(buf, "[");
file := location.file_path;
if .Short_File_Path in opts {
last := 0;
for r, i in location.file_path {
if r == '/' {
last = i+1;
}
}
file = location.file_path[last:];
}
if Location_File_Opts & opts != nil {
fmt.sbprint(buf, file);
}
if .Line in opts {
if Location_File_Opts & opts != nil {
fmt.sbprint(buf, ":");
}
fmt.sbprint(buf, location.line);
}
if .Procedure in opts {
if (Location_File_Opts | {.Line}) & opts != nil {
fmt.sbprint(buf, ":");
}
fmt.sbprintf(buf, "%s()", location.procedure);
}
fmt.sbprint(buf, "] ");
}
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