gutter_runner/main_web/emscripten_logger.odin

100 lines
2.2 KiB
Odin

/*
This logger is largely a copy of the console logger in `core:log`, but it uses
emscripten's `puts` proc to write into he console of the web browser.
This is more or less identical to the logger in Aronicu's repository:
https://github.com/Aronicu/Raylib-WASM/tree/main
*/
package main_web
import "core:c"
import "core:fmt"
import "core:log"
import "core:strings"
Emscripten_Logger_Opts :: log.Options{.Level, .Short_File_Path, .Line}
create_emscripten_logger :: proc(
lowest := log.Level.Debug,
opt := Emscripten_Logger_Opts,
) -> log.Logger {
return log.Logger{data = nil, procedure = logger_proc, lowest_level = lowest, options = opt}
}
// This create's a binding to `puts` which will be linked in as part of the
// emscripten runtime.
@(default_calling_convention = "c")
foreign _ {
puts :: proc(buffer: cstring) -> c.int ---
}
@(private = "file")
logger_proc :: proc(
logger_data: rawptr,
level: log.Level,
text: string,
options: log.Options,
location := #caller_location,
) {
b := strings.builder_make(context.temp_allocator)
strings.write_string(&b, Level_Headers[level])
do_location_header(options, &b, location)
fmt.sbprint(&b, text)
if bc, bc_err := strings.to_cstring(&b); bc_err == nil {
puts(bc)
}
}
@(private = "file")
Level_Headers := [?]string {
0 ..< 10 = "[DEBUG] --- ",
10 ..< 20 = "[INFO ] --- ",
20 ..< 30 = "[WARN ] --- ",
30 ..< 40 = "[ERROR] --- ",
40 ..< 50 = "[FATAL] --- ",
}
@(private = "file")
do_location_header :: proc(
opts: log.Options,
buf: ^strings.Builder,
location := #caller_location,
) {
if log.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 log.Location_File_Opts & opts != nil {
fmt.sbprint(buf, file)
}
if .Line in opts {
if log.Location_File_Opts & opts != nil {
fmt.sbprint(buf, ":")
}
fmt.sbprint(buf, location.line)
}
if .Procedure in opts {
if (log.Location_File_Opts | {.Line}) & opts != nil {
fmt.sbprint(buf, ":")
}
fmt.sbprintf(buf, "%s()", location.procedure)
}
fmt.sbprint(buf, "] ")
}