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65 lines
1.9 KiB
C++
65 lines
1.9 KiB
C++
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ex: set tabstop=8 softtabstop=4 shiftwidth=4 expandtab: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef nsCUPSShim_h___
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#define nsCUPSShim_h___
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#include <cups/cups.h>
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struct PRLibrary;
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/* Note: this class relies on static initialization. */
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class nsCUPSShim {
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public:
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/**
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* Initialize this object. Attempt to load the CUPS shared
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* library and find function pointers for the supported
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* functions (see below).
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* @return false if the shared library could not be loaded, or if
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* any of the functions could not be found.
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* true for successful initialization.
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*/
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bool Init();
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/**
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* @return true if the object was initialized successfully.
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* false otherwise.
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*/
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bool IsInitialized() const { return mInited; }
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/**
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* Function pointers for supported functions. These are only
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* valid after successful initialization.
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*/
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#define CUPS_SHIM_ALL_FUNCS(X) \
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X(cupsAddOption) \
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X(cupsCheckDestSupported) \
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X(cupsConnectDest) \
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X(cupsCopyDest) \
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X(cupsCopyDestInfo) \
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X(cupsFreeDestInfo) \
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X(cupsFreeDests) \
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X(cupsGetDestMediaCount) \
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X(cupsGetDestMediaByIndex) \
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X(cupsGetDest) \
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X(cupsGetDests) \
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X(cupsGetNamedDest) \
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X(cupsLocalizeDestMedia) \
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X(cupsPrintFile) \
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X(cupsTempFd) \
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X(httpClose)
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#define CUPS_SHIM_FUNC_DECL(X) decltype(::X)* X;
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CUPS_SHIM_ALL_FUNCS(CUPS_SHIM_FUNC_DECL)
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#undef CUPS_SHIM_FUNC_DECL
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private:
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bool mInited = false;
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PRLibrary* mCupsLib;
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};
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#endif /* nsCUPSShim_h___ */
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