Added logging utility

examples/README.md

@@ -4,5 +4,6 @@
   (using [libaco](https://libaco.org)).
 - [game/](game/): An example game using raylib.
 - [ini.tm](ini.tm): An INI configuration file reader tool.
+- [log.tm](log.tm): A logging utility.
 - [vectors.tm](vectors.tm): A math vector library.
 - [wrap.tm](wrap.tm): A command-line program to wrap text.

examples/log.tm

@@ -0,0 +1,53 @@
+use <time.h>
+use <stdio.h>
+
+timestamp_format := CString("%F %T")
+
+logfiles := {:Path}
+
+func _timestamp()->Text:
+    return inline C (
+        ({
+        char *str = GC_MALLOC_ATOMIC(20);
+        time_t t;
+        time(&t);
+        struct tm *tm_info;
+        tm_info = localtime(&t);
+        strftime(str, 20, "%F %T", tm_info);
+        Text$format("%s", str);
+        })
+    ) : Text
+
+func info(text:Text, newline=yes):
+    say("$\[2]⚫ $text$\[]", newline)
+    for file in logfiles:
+        file:append("$(_timestamp()) [info]  $text$\n")
+
+func debug(text:Text, newline=yes):
+    say("$\[32]🟢 $text$\[]", newline)
+    for file in logfiles:
+        file:append("$(_timestamp()) [debug] $text$\n")
+
+func warn(text:Text, newline=yes):
+    say("$\[33;1]🟡 $text$\[]", newline)
+    for file in logfiles:
+        file:append("$(_timestamp()) [warn]  $text$\n")
+
+func error(text:Text, newline=yes):
+    say("$\[31;1]🔴 $text$\[]", newline)
+    for file in logfiles:
+        file:append("$(_timestamp()) [error] $text$\n")
+
+func add_logfile(file:Path):
+    logfiles:add(file)
+
+func remove_logfile(file:Path):
+    logfiles:remove(file)
+
+func main():
+    add_logfile((./log.txt))
+    >> info("Hello")
+    >> debug("Hello")
+    >> warn("Hello")
+    >> error("Hello")
+