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#+build !freestanding
#+build !orca
#+build !js
package log
import "base:runtime"
import "core:fmt"
import "core:strings"
import "core:os"
import "core:terminal"
import "core:terminal/ansi"
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.File,
ident: string,
}
@(private) global_subtract_stdout_options: Options
@(private) global_subtract_stderr_options: Options
@(init, private)
init_standard_stream_status :: proc "contextless" () {
// NOTE(Feoramund): While it is technically possible for these streams to
// be redirected during the runtime of the program, the cost of checking on
// every single log message is not worth it to support such an
// uncommonly-used feature.
if terminal.color_enabled {
context = runtime.default_context()
// This is done this way because it's possible that only one of these
// streams could be redirected to a file.
if !terminal.is_terminal(os.stdout) {
global_subtract_stdout_options = {.Terminal_Color}
}
if !terminal.is_terminal(os.stderr) {
global_subtract_stderr_options = {.Terminal_Color}
}
} else {
// Override any terminal coloring.
global_subtract_stdout_options = {.Terminal_Color}
global_subtract_stderr_options = {.Terminal_Color}
}
}
create_file_logger :: proc(f: ^os.File, lowest := Level.Debug, opt := Default_File_Logger_Opts, ident := "", allocator := context.allocator) -> Logger {
data := new(File_Console_Logger_Data, allocator)
data.file_handle = f
data.ident = ident
return Logger{file_logger_proc, data, lowest, opt}
}
destroy_file_logger :: proc(log: Logger, allocator := context.allocator) {
data := cast(^File_Console_Logger_Data)log.data
if data.file_handle != nil {
os.close(data.file_handle)
}
free(data, allocator)
}
create_console_logger :: proc(lowest := Level.Debug, opt := Default_Console_Logger_Opts, ident := "", allocator := context.allocator) -> Logger {
data := new(File_Console_Logger_Data, allocator)
data.file_handle = nil
data.ident = ident
return Logger{console_logger_proc, data, lowest, opt}
}
destroy_console_logger :: proc(log: Logger, allocator := context.allocator) {
free(log.data, allocator)
}
@(private)
_file_console_logger_proc :: proc(h: ^os.File, ident: string, level: Level, text: string, options: Options, location: runtime.Source_Code_Location) {
backing: [1024]byte //NOTE(Hoej): 1024 might be too much for a header backing, unless somebody has really long paths.
buf := strings.builder_from_bytes(backing[:])
do_level_header(options, &buf, level)
when time.IS_SUPPORTED {
do_time_header(options, &buf, time.now())
}
do_location_header(options, &buf, location)
if .Thread_Id in options {
fmt.sbprintf(&buf, "[{}] ", os.get_current_thread_id())
}
if ident != "" {
fmt.sbprintf(&buf, "[%s] ", 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)
}
file_logger_proc :: proc(logger_data: rawptr, level: Level, text: string, options: Options, location := #caller_location) {
data := cast(^File_Console_Logger_Data)logger_data
_file_console_logger_proc(data.file_handle, data.ident, level, text, options, location)
}
console_logger_proc :: proc(logger_data: rawptr, level: Level, text: string, options: Options, location := #caller_location) {
options := options
data := cast(^File_Console_Logger_Data)logger_data
h: ^os.File = nil
if level < Level.Error {
h = os.stdout
options -= global_subtract_stdout_options
} else {
h = os.stderr
options -= global_subtract_stderr_options
}
_file_console_logger_proc(h, data.ident, level, text, options, location)
}
do_level_header :: proc(opts: Options, str: ^strings.Builder, level: Level) {
RESET :: ansi.CSI + ansi.RESET + ansi.SGR
RED :: ansi.CSI + ansi.FG_RED + ansi.SGR
YELLOW :: ansi.CSI + ansi.FG_YELLOW + ansi.SGR
DARK_GREY :: ansi.CSI + ansi.FG_BRIGHT_BLACK + ansi.SGR
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_time_header :: proc(opts: Options, buf: ^strings.Builder, t: time.Time) {
when time.IS_SUPPORTED {
if Full_Timestamp_Opts & opts != nil {
fmt.sbprint(buf, "[")
y, m, d := time.date(t)
h, min, s := time.clock(t)
if .Date in opts {
fmt.sbprintf(buf, "%d-%02d-%02d", y, m, d)
if .Time in opts {
fmt.sbprint(buf, " ")
}
}
if .Time in opts { fmt.sbprintf(buf, "%02d:%02d:%02d", h, min, s) }
fmt.sbprint(buf, "] ")
}
}
}
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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