From b16c75d98c57b8f1efa26ab6eae35431c04c4c1e Mon Sep 17 00:00:00 2001
From: Matthias Schiffer <matthias@gamezock.de>
Date: Sun, 21 Sep 2008 19:58:55 +0200
Subject: Printf-artige Funktion logf zum Logger hinzugef?gt

---
 src/Common/Exception.cpp |  2 +-
 src/Common/Logger.cpp    | 46 ++++++++++++++++++++++++++++++++++++++++++++++
 src/Common/Logger.h      |  6 ++++++
 3 files changed, 53 insertions(+), 1 deletion(-)

(limited to 'src/Common')

diff --git a/src/Common/Exception.cpp b/src/Common/Exception.cpp
index dc04f7d..9366fe7 100644
--- a/src/Common/Exception.cpp
+++ b/src/Common/Exception.cpp
@@ -43,7 +43,7 @@ std::string Exception::strerror() const {
     case NOT_FINISHED:
       return ret + "Not finished";
     case INTERNAL_ERRNO:
-      return ret + "Internal error: " + std::strerror(subCode);
+      return ret + std::strerror(subCode);
     case INTERNAL_GNUTLS:
       return ret + "GnuTLS error: " + gnutls_strerror(subCode);
     case INVALID_ADDRESS:
diff --git a/src/Common/Logger.cpp b/src/Common/Logger.cpp
index e479979..22748d1 100644
--- a/src/Common/Logger.cpp
+++ b/src/Common/Logger.cpp
@@ -18,12 +18,42 @@
  */
 
 #include "Logger.h"
+#include <cstdlib>
 
 namespace Mad {
 namespace Common {
 
 std::list<Logger*> Logger::loggers;
 
+
+void Logger::logfv(MessageLevel level, const char *format, va_list ap) {
+  int size = 100;
+  char *buf = (char*)std::malloc(size);
+
+  // If buffer is too small, try again with bigger buffer
+  while(true) {
+    va_list ap2;
+
+    va_copy(ap2, ap);
+    int n = std::vsnprintf(buf, size, format, ap2);
+    va_end(ap2);
+
+    if(n > -1 && n < size) {
+      log(level, buf);
+      std::free(buf);
+      return;
+    }
+
+    if(n > -1)
+      size = n+1;
+    else
+      size *= 2;
+
+    buf = (char*)std::realloc(buf, size);
+  }
+
+}
+
 void Logger::log(MessageLevel level, const std::string &message) {
   for(std::list<Logger*>::iterator logger = loggers.begin(); logger != loggers.end(); ++logger) {
     if((*logger)->getLevel() >= level)
@@ -31,5 +61,21 @@ void Logger::log(MessageLevel level, const std::string &message) {
   }
 }
 
+void Logger::logf(MessageLevel level, const char *format, ...) {
+  va_list ap;
+
+  va_start(ap, format);
+  logfv(level, format, ap);
+  va_end(ap);
+}
+
+void Logger::logf(const char *format, ...) {
+  va_list ap;
+
+  va_start(ap, format);
+  logfv(DEFAULT, format, ap);
+  va_end(ap);
+}
+
 }
 }
diff --git a/src/Common/Logger.h b/src/Common/Logger.h
index 39ca5dd..f1cd33d 100644
--- a/src/Common/Logger.h
+++ b/src/Common/Logger.h
@@ -21,6 +21,7 @@
 #define MAD_COMMON_LOGGER_H_
 
 #include <algorithm>
+#include <cstdarg>
 #include <list>
 #include <string>
 
@@ -37,6 +38,8 @@ class Logger {
     static std::list<Logger*> loggers;
     MessageLevel level;
 
+    static void logfv(MessageLevel level, const char *format, va_list ap);
+
   protected:
     Logger() : level(DEFAULT) {}
 
@@ -48,6 +51,9 @@ class Logger {
       log(DEFAULT, message);
     }
 
+    static void logf(MessageLevel level, const char *format, ...);
+    static void logf(const char *format, ...);
+
     static void registerLogger(Logger *logger) {
       loggers.push_back(logger);
     }
-- 
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