diff base/Debug.cpp @ 1275:ad2d3e0a8b7c 3.0-integration

Add SVCERR and the ability to silence debug output (giving Sonic Annotator a --quiet mode)

--- a/base/Debug.cpp	Mon Nov 21 17:08:02 2016 +0000
+++ b/base/Debug.cpp	Tue Nov 22 16:39:17 2016 +0000
@@ -23,23 +23,41 @@
 
 #include <stdexcept>
 
-static SVDebug *debug = 0;
+static SVDebug *svdebug = 0;
+static SVCerr *svcerr = 0;
 static QMutex mutex;
 
 SVDebug &getSVDebug() {
     mutex.lock();
-    if (!debug) {
-        debug = new SVDebug();
+    if (!svdebug) {
+        svdebug = new SVDebug();
     }
     mutex.unlock();
-    return *debug;
+    return *svdebug;
 }
 
+SVCerr &getSVCerr() {
+    mutex.lock();
+    if (!svcerr) {
+        if (!svdebug) {
+            svdebug = new SVDebug();
+        }
+        svcerr = new SVCerr(*svdebug);
+    }
+    mutex.unlock();
+    return *svcerr;
+}
+
+bool SVDebug::m_silenced = false;
+bool SVCerr::m_silenced = false;
+
 SVDebug::SVDebug() :
     m_prefix(0),
     m_ok(false),
-    m_eol(false)
+    m_eol(true)
 {
+    if (m_silenced) return;
+    
     if (qApp->applicationName() == "") {
         cerr << "ERROR: Can't use SVDEBUG before setting application name" << endl;
         throw std::logic_error("Can't use SVDEBUG before setting application name");
@@ -71,7 +89,7 @@
 
 SVDebug::~SVDebug()
 {
-    m_stream.close();
+    if (m_stream) m_stream.close();
 }
 
 QDebug &