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83 lines
3.2 KiB
C++
83 lines
3.2 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:set ts=2 sw=2 sts=2 et cindent: */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1994-2000
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsPrintfCString.h"
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#include <stdarg.h>
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#include "prprf.h"
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// though these classes define a fixed buffer, they do not set the F_FIXED
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// flag. this is because they are not intended to be modified after they have
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// been constructed. we could change this but it would require adding a new
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// class to the hierarchy, one that both this class and nsCAutoString would
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// inherit from. for now, we populate the fixed buffer, and then let the
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// nsCString code treat the buffer as if it were a dependent buffer.
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nsPrintfCString::nsPrintfCString( const char_type* format, ... )
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: string_type(mLocalBuffer, 0, F_TERMINATED)
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{
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va_list ap;
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size_type logical_capacity = kLocalBufferSize;
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size_type physical_capacity = logical_capacity + 1;
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va_start(ap, format);
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mLength = PR_vsnprintf(mData, physical_capacity, format, ap);
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va_end(ap);
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}
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nsPrintfCString::nsPrintfCString( size_type n, const char_type* format, ... )
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: string_type(mLocalBuffer, 0, F_TERMINATED)
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{
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va_list ap;
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// make sure there's at least |n| space
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size_type logical_capacity = kLocalBufferSize;
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if ( n > logical_capacity )
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{
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if (!SetCapacity(n))
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return; // out of memory !!
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logical_capacity = n;
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}
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size_type physical_capacity = logical_capacity + 1;
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va_start(ap, format);
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mLength = PR_vsnprintf(mData, physical_capacity, format, ap);
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va_end(ap);
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}
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