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- /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
- /* ***** BEGIN LICENSE BLOCK *****
- * Version: MPL 1.1/GPL 2.0/LGPL 2.1
- *
- * The contents of this file are subject to the Mozilla Public License Version
- * 1.1 (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- * http://www.mozilla.org/MPL/
- *
- * Software distributed under the License is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
- * for the specific language governing rights and limitations under the
- * License.
- *
- * The Original Code is mozilla.org code.
- *
- * The Initial Developer of the Original Code is
- * Netscape Communications Corporation.
- * Portions created by the Initial Developer are Copyright (C) 1994-2000
- * the Initial Developer. All Rights Reserved.
- *
- * Contributor(s):
- *
- * Alternatively, the contents of this file may be used under the terms of
- * either of the GNU General Public License Version 2 or later (the "GPL"),
- * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
- * in which case the provisions of the GPL or the LGPL are applicable instead
- * of those above. If you wish to allow use of your version of this file only
- * under the terms of either the GPL or the LGPL, and not to allow others to
- * use your version of this file under the terms of the MPL, indicate your
- * decision by deleting the provisions above and replace them with the notice
- * and other provisions required by the GPL or the LGPL. If you do not delete
- * the provisions above, a recipient may use your version of this file under
- * the terms of any one of the MPL, the GPL or the LGPL.
- *
- * ***** END LICENSE BLOCK ***** */
-
- #ifndef nsPrintfCString_h___
- #define nsPrintfCString_h___
-
- #ifndef nsString_h___
- #include "nsString.h"
- #endif
-
-
- /**
- * |nsPrintfCString| lets you use a formated |printf| string as an |const nsACString|.
- *
- * myCStr += nsPrintfCString("%f", 13.917);
- * // ...a general purpose substitute for |AppendFloat|
- *
- * For longer patterns, you'll want to use the constructor that takes a length
- *
- * nsPrintfCString(128, "%f, %f, %f, %f, %f, %f, %f, %i, %f", x, y, z, 3.2, j, k, l, 3, 3.1);
- *
- * Exceding the default size (which you must specify in the constructor, it is not determined)
- * causes an allocation, so avoid that. If your formatted string exceeds the allocated space, it is
- * cut off at the size of the buffer, no error is reported (and no out-of-bounds writing occurs).
- * This class is intended to be useful for numbers and short
- * strings, not arbitrary formatting of other strings (e.g., with %s). There is currently no
- * wide version of this class, since wide |printf| is not generally available. That means
- * to get a wide version of your formatted data, you must, e.g.,
- *
- * CopyASCIItoUTF16(nsPrintfCString("%f", 13.917"), myStr);
- *
- * That's another good reason to avoid this class for anything but numbers ... as strings can be
- * much more efficiently handled with |NS_LITERAL_[C]STRING| and |nsLiteral[C]String|.
- */
-
- class NS_COM nsPrintfCString : public nsCString
- {
- typedef nsCString string_type;
-
- enum { kLocalBufferSize=15 };
- // ought to be large enough for most things ... a |long long| needs at most 20 (so you'd better ask)
- // pinkerton suggests 7. We should measure and decide what's appropriate
-
- public:
- // XXX don't these need to be declared CDECL ??
- explicit nsPrintfCString( const char_type* format, ... );
- nsPrintfCString( size_type n, const char_type* format, ...);
-
- private:
- char_type mLocalBuffer[ kLocalBufferSize + 1 ];
- };
-
- #endif // !defined(nsPrintfCString_h___)
-