cwText,cwPianoScore : Added textCopy()

cwPianoScore.cpp

@@ -167,7 +167,7 @@ namespace cw
         goto errLabel;
       }
       
-      strncpy(e->sci_pitch,sci_pitch,sizeof(e->sci_pitch));
+      strncpy(e->sci_pitch,sci_pitch,sizeof(e->sci_pitch)-1);
       
       if( p->end == nullptr )
       {
@@ -571,14 +571,19 @@ namespace cw
           }
 
 
+          textCopy( e->sci_pitch,sizeof(e->sci_pitch),sci_pitch);
+          textCopy( e->dmark,sizeof(e->dmark),dmark);
+          textCopy( e->grace_mark, sizeof(e->grace_mark),grace_mark);
+          /*
           if( sci_pitch != nullptr )
-            strncpy(e->sci_pitch,sci_pitch,sizeof(e->sci_pitch));
+            strncpy(e->sci_pitch,sci_pitch,sizeof(e->sci_pitch)-1);
           
           if( dmark != nullptr )
-            strncpy(e->dmark,dmark,sizeof(e->dmark));
+            strncpy(e->dmark,dmark,sizeof(e->dmark)-1);
 
           if( grace_mark != nullptr )
-            strncpy(e->grace_mark,grace_mark,sizeof(e->grace_mark));
+            strncpy(e->grace_mark,grace_mark,sizeof(e->grace_mark)-1);
+          */
           
           // assign the UID
           e->uid = i;          

cwScoreParse.cpp

@@ -263,7 +263,7 @@ namespace cw
     
     rc_t _parse_note_on_row( score_parse_t* p, csv::handle_t csvH, event_t* e  )
     {
-      rc_t rc,rc0,rc1,rc2;
+      rc_t rc,rc0=kOkRC,rc1=kOkRC,rc2=kOkRC;
       const char* sciPitch   = nullptr;
       const char* dmark      = nullptr;
       const char* graceLabel = nullptr;

cwText.cpp

@@ -54,6 +54,30 @@ namespace cw
 unsigned cw::textLength( const char* s )
 { return s == nullptr ? 0 : strlen(s); }
 
+const char* cw::textCopy( char* dst, unsigned dstN, const char* src, unsigned srcN )
+{
+  if( dst == nullptr || dstN == 0 )
+    return nullptr;
+
+  if( srcN == 0 )
+    srcN = textLength(src);
+  
+  if( src == nullptr || srcN==0 || dstN==1 )
+  {
+    dst[0] = 0;
+  }
+  else
+  {
+    
+    assert( dstN >= 2 );
+    unsigned n = std::min( dstN-1, srcN );
+    memcpy(dst,src,n);
+    dst[n] = 0;
+  }
+  return dst;
+}
+
+
 void textToLower( char* s )
 {
   if( s != nullptr )

cwText.h

@@ -7,6 +7,13 @@ namespace cw
   // Return 0 if s is null.
   unsigned textLength( const char* s );
 
+  // If dst is non-null then dst is always 0-terminated.
+  // If src will be truncated if srcN > dstN-1.
+  // If dst is null then null is returned
+  // if src is null then dst[0] = 0.
+  // if srcN is 0 then textLength(src) is used for srcN
+  const char* textCopy( char* dst, unsigned dstN, const char* src, unsigned srcN=0 );
+
   void textToLower( char* s );
   void textToUpper( char* s );