Hi Ali,
Heres my full Logger class.
module utils.log;
import std.stdio;
import std.string;
import std.datetime;
public enum LogLevel {Fatal=0, Severe=1, Info=2, Debug=3,
Verbose=4};
public class Logger{
public:
this(LogLevel minLevel = LogLevel.Info, string
fileName="logfile.log"){
this.minLevel = minLevel;
logFile = File(fileName, "w");
this.writeMsg(format("Opened file for writing at [%s]",
currTimestamp()));
logFile.flush();
scope(exit){
logInfo("End log");
logFile.close();
}
}
void logFatal(string message){
this.log(LogLevel.Fatal, "FATAL - " ~ message);
}
void logSevere(string message){
this.log(LogLevel.Severe, "SEVERE - " ~ message);
}
void logInfo(string message){
this.log(LogLevel.Info, format("INFO - %s",message));
}
void logDebug(string message){
this.log(LogLevel.Debug, "DEBUG - " ~ message);
}
void logVerbose(string message){
this.log(LogLevel.Verbose, "VERBOSE - " ~ message);
}
private:
void writeMsg(string msg){
logFile.writeln(msg);
}
void log(LogLevel level, string message){
if(this.minLevel <= level){
writefln("Before write! %s",message);
string timestamp = currTimestamp();
this.writeMsg(format("[%s] %s", timestamp, message));
writefln("After write! %s", message);
logFile.flush();
}
}
string currTimestamp(){
auto currTime = Clock.currTime();
return currTime.toISOExtString()[0..$-8];
}
private:
LogLevel minLevel;
File logFile;
}
logFile is a class variable, so its definatly visible.
Ill go with adding to your code now and see at what point it
breaks.
Thanks!
On Thursday, 15 August 2013 at 17:33:11 UTC, Ali Çehreli wrote:
On 08/15/2013 10:03 AM, Colin Grogan wrote:
> I've done this a million times (I thought!) but I'm getting a
strange
> error I cant figure out.
>
> The code:
>
> void writeMsg(string msg){
> logFile.writeln(msg);
What is logFile?
> }
>
> is failing with this error:
>
> object.Exception@std/stdio.d(1321): Enforcement failed
> ----------------
> ./tester(pure @safe bool
std.exception.enforce!(bool).enforce(bool, lazy
> const(char)[], immutable(char)[], ulong)+0x6b) [0x49a343]
> ./tester(ref std.stdio.File.LockingTextWriter
> std.stdio.File.LockingTextWriter.__ctor(ref
std.stdio.File)+0x59)
> [0x4ce019]
...
> Also, I'm creating the logFile variable as follows:
> File logFile = File(fileName, "w");
That looks like a local variable. How does writeMsg see it?
> If ye need the code around it I'll be glad to post it
It is very helpful if you can reproduce it in a minimal
example. The following program works with v2.064-devel-52cc287:
import std.stdio;
enum fileName = "deneme.txt";
File logFile;
static this() {
logFile = File(fileName, "w");
}
void writeMsg(string msg){
logFile.writeln(msg);
}
void main()
{
writeMsg("hello");
writeMsg("world");
}
Can you add to it and see when the problem appears.
Ali
