зеркало из https://github.com/mozilla/pjs.git
91 строка
3.2 KiB
C++
91 строка
3.2 KiB
C++
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* ex: set tabstop=8 softtabstop=4 shiftwidth=4 expandtab: */
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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 the Mozilla PostScript driver printer list component.
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*
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* The Initial Developer of the Original Code is
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* Kenneth Herron <kherron+mozilla@fmailbox.com>
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* Portions created by the Initial Developer are Copyright (C) 2004
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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 the GNU General Public License Version 2 or later (the "GPL"), or
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* 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 "nsDebug.h"
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#include "nsString.h"
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#include "nsCUPSShim.h"
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#include "prlink.h"
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// List of symbols to find in libcups. Must match symAddr[] defined in Init().
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// Making this an array of arrays instead of pointers allows storing the
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// whole thing in read-only memory.
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static const char gSymName[][sizeof("cupsPrintFile")] = {
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{ "cupsAddOption" },
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{ "cupsFreeDests" },
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{ "cupsGetDest" },
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{ "cupsGetDests" },
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{ "cupsPrintFile" },
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{ "cupsTempFd" },
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};
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static const int gSymNameCt = NS_ARRAY_LENGTH(gSymName);
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bool
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nsCUPSShim::Init()
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{
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mCupsLib = PR_LoadLibrary("libcups.so.2");
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if (!mCupsLib)
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return false;
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// List of symbol pointers. Must match gSymName[] defined above.
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void **symAddr[] = {
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(void **)&mCupsAddOption,
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(void **)&mCupsFreeDests,
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(void **)&mCupsGetDest,
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(void **)&mCupsGetDests,
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(void **)&mCupsPrintFile,
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(void **)&mCupsTempFd,
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};
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for (int i = gSymNameCt; i--; ) {
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*(symAddr[i]) = PR_FindSymbol(mCupsLib, gSymName[i]);
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if (! *(symAddr[i])) {
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#ifdef DEBUG
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nsCAutoString msg(gSymName[i]);
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msg.Append(" not found in CUPS library");
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NS_WARNING(msg.get());
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#endif
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PR_UnloadLibrary(mCupsLib);
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mCupsLib = nsnull;
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return false;
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}
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}
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return true;
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}
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