Fix discovery of sox binary

Closes: https://mirror.git.trinitydesktop.org/gitea/TDE/k3b/issues/58
Signed-off-by: Alexander Golubev <fatzer2@gmail.com>

plugins/encoder/sox/k3bsoxencoder.cpp

@@ -34,6 +34,7 @@
 #include <tqcombobox.h>
 #include <tqcheckbox.h>
 #include <tqlayout.h>
+#include <tqregexp.h>
 
 #include <sys/types.h>
 #include <sys/wait.h>
@@ -65,46 +66,32 @@ class K3bSoxProgram : public K3bExternalProgram
     if( !TQFile::exists( path ) )
       return false;
 
-    K3bExternalBin* bin = 0;
-
     // probe version
     TDEProcess vp;
     K3bProcessOutputCollector out( &vp );
 
     vp << path << "-h";
     if( vp.start( TDEProcess::Block, TDEProcess::AllOutput ) ) {
-      int pos = out.output().find( "sox: SoX Version" );
-      if ( pos < 0 )
-        pos = out.output().find( "sox: SoX v" ); // newer sox versions
-      int endPos = out.output().find( "\n", pos );
-      if( pos > 0 && endPos > 0 ) {
-        pos += 17;
-        bin = new K3bExternalBin( this );
-        bin->path = path;
-        bin->version = out.output().mid( pos, endPos-pos );
-
-        addBin( bin );
+      TQRegExp versionRe ("sox: +(SoX )?(Version |v)([^\\n]+)");
+      // Should match:
+      //  * sox: Version 12.2.3
+      //  * sox: SoX Version 12.18.1
+      //  * sox: SoX v14.0.0
+      //  * sox:      SoX v14.4.0
+      int pos = versionRe.search( out.output() );
+      if( pos > 0 ) {
+        TQString version = versionRe.cap(3);
+
+        K3bExternalBin* bin = new K3bExternalBin( this );
 
-        return true;
-      }
-      else {
-        pos = out.output().find( "sox: Version" );
-        endPos = out.output().find( "\n", pos );
-        if( pos > 0 && endPos > 0 ) {
-          pos += 13;
-          bin = new K3bExternalBin( this );
         bin->path = path;
-          bin->version = out.output().mid( pos, endPos-pos );
+        bin->version = version;
 
         addBin( bin );
 
         return true;
       }
-        else
-          return false;
     }
-    }
-    else
     return false;
   }
 };