better logging (maybe) and exception handling

[chaz/yoink] / src / Moof / Log.cc

diff --git a/src/Moof/Log.cc b/src/Moof/Log.cc
new file mode 100644 (file)
index 0000000..dcdb5ec
--- /dev/null
+++ b/src/Moof/Log.cc
@@ -0,0 +1,121 @@
+
+/*******************************************************************************
+
+ Copyright (c) 2009, Charles McGarvey
+ All rights reserved.
+ 
+ Redistribution   and   use  in  source  and  binary  forms,  with  or  without
+ modification, are permitted provided that the following conditions are met:
+ 
+   * Redistributions  of  source  code  must retain the above copyright notice,
+     this list of conditions and the following disclaimer.
+   * Redistributions  in binary form must reproduce the above copyright notice,
+     this  list of conditions and the following disclaimer in the documentation
+     and/or other materials provided with the distribution.
+ 
+ THIS  SOFTWARE  IS  PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ AND  ANY  EXPRESS  OR  IMPLIED  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ DISCLAIMED.  IN  NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ FOR  ANY  DIRECT,  INDIRECT,  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ DAMAGES  (INCLUDING,  BUT  NOT  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ SERVICES;  LOSS  OF  USE,  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ CAUSED  AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ OR  TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+*******************************************************************************/
+
+#include <cstdarg>
+#include <cstdio>              // snprintf
+#include <cstring>             // strcpy
+
+#include "Log.hh"
+
+
+namespace Mf {
+
+
+static LogLevel logLevel_ = WARNING;
+
+static void printLog_(int logLevel, const char* fmt, va_list args)
+{
+       if (logLevel_ < logLevel) return;
+
+       switch (logLevel)
+       {
+               case ERROR:
+                       fprintf(stderr, "  error: ");
+                       break;
+               case WARNING:
+                       fprintf(stderr, "warning: ");
+                       break;
+               case INFO:
+                       fprintf(stderr, "   info: ");
+                       break;
+               case DEBUGGING:
+                       fprintf(stderr, "  debug: ");
+                       break;
+       }
+
+       vfprintf(stderr, fmt, args);
+       fprintf(stderr, "\n");
+}
+
+
+LogLevel setLogLevel(LogLevel level)
+{
+       if (level != 0)
+               logLevel_ = level;
+
+       return logLevel_;
+}
+
+
+void
+logError(const char* fmt, ...)
+{
+       va_list args;
+       va_start(args, fmt);
+
+       printLog_(ERROR, fmt, args);
+
+       va_end(args);
+}
+
+void
+logWarning(const char* fmt, ...)
+{
+       va_list args;
+       va_start(args, fmt);
+
+       printLog_(WARNING, fmt, args);
+
+       va_end(args);
+}
+
+void
+logInfo(const char* fmt, ...)
+{
+       va_list args;
+       va_start(args, fmt);
+
+       printLog_(INFO, fmt, args);
+
+       va_end(args);
+}
+
+void
+logDebug(const char* fmt, ...)
+{
+       va_list args;
+       va_start(args, fmt);
+
+       printLog_(DEBUGGING, fmt, args);
+
+       va_end(args);
+}
+
+
+} // namespace Mf
+