cwText.h/cpp : Added firstMatchChar(char*,int,char) form of first char. match function.

cwText.cpp

@@ -158,6 +158,21 @@ char* cw::firstMatchChar( char* s, char c )
 }
 
 const char* cw::firstMatchChar( const char* s, char c )
+{ return firstMatchChar((char*)s,c); }
+
+char* cw::firstMatchChar( char* s, unsigned n, char c )
+{
+  if( s == nullptr )
+    return nullptr;
+  
+  for(unsigned i=0; *s && i<n; ++s,++i)
+    if(*s == c)
+      return s;
+  return nullptr;
+}
+
+
+const char* cw::firstMatchChar( const char* s, unsigned n, char c )
 {
   return firstMatchChar((char*)s,c);
 }

cwText.h

@@ -67,6 +67,8 @@ namespace cw
   // if 'c' does not occur in s[]
   char*       firstMatchChar( char* s, char c );
   const char* firstMatchChar( const char* s, char c );
+  char*       firstMatchChar( char* s, unsigned sn, char c );
+  const char* firstMatchChar( const char* s, unsigned sn, char c );
   
   // Find the last occurrent of 'c' in s[]. 
   char*       lastMatchChar( char* s, char c );