public: simplified strings operations.

public/crtlib.c

@@ -560,14 +560,14 @@ char *Q_pretifymem( float value, int digitsafterdecimal )
 	if( value > onemb )
 	{
 		value /= onemb;
-		Q_sprintf( suffix, " Mb" );
+		Q_strcpy( suffix, " Mb" );
 	}
 	else if( value > onekb )
 	{
 		value /= onekb;
-		Q_sprintf( suffix, " Kb" );
+		Q_strcpy( suffix, " Kb" );
 	}
-	else Q_sprintf( suffix, " bytes" );
+	else Q_strcpy( suffix, " bytes" );
 
 	// clamp to >= 0
 	digitsafterdecimal = Q_max( digitsafterdecimal, 0 );
@@ -591,8 +591,8 @@ char *Q_pretifymem( float value, int digitsafterdecimal )
 	o = out;
 
 	// search for decimal or if it was integral, find the space after the raw number
-	dot = Q_strstr( i, "." );
-	if( !dot ) dot = Q_strstr( i, " " );
+	dot = Q_strchr( i, '.' );
+	if( !dot ) dot = Q_strchr( i, ' ' );
 
 	pos = dot - i;	// compute position of dot
 	pos -= 3;		// don't put a comma if it's <= 3 long
@@ -750,7 +750,7 @@ void COM_ExtractFilePath( const char *path, char *dest )
 		memcpy( dest, path, src - path );
 		dest[src - path - 1] = 0; // cutoff backslash
 	}
-	else Q_strcpy( dest, "" ); // file without path
+	else dest[0] = 0; // file without path
 }
 
 /*
@@ -785,10 +785,12 @@ COM_DefaultExtension
 void COM_DefaultExtension( char *path, const char *extension )
 {
 	const char	*src;
+	size_t		 len;
 
 	// if path doesn't have a .EXT, append extension
 	// (extension should include the .)
-	src = path + Q_strlen( path ) - 1;
+	len = Q_strlen( path );
+	src = path + len - 1;
 
 	while( *src != '/' && src != path )
 	{
@@ -797,7 +799,7 @@ void COM_DefaultExtension( char *path, const char *extension )
 		src--;
 	}
 
-	Q_strcat( path, extension );
+	Q_strcpy( &path[len], extension );
 }
 
 /*