1 files changed, 87 insertions, 0 deletions
diff --git a/src/libs/xpcom18a4/xpcom/string/public/nsPrintfCString.h b/src/libs/xpcom18a4/xpcom/string/public/nsPrintfCString.h
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+++ b/src/libs/xpcom18a4/xpcom/string/public/nsPrintfCString.h
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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___)