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88 lines
3.5 KiB
C++
88 lines
3.5 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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/* 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 "prtypes.h"
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/* Various CUPS data types. We don't #include cups headers to avoid
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* requiring CUPS to be installed on the build host (and to avoid having
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* to test for CUPS in configure).
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*/
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typedef struct /**** Printer Options ****/
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{
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char *name; /* Name of option */
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char *value; /* Value of option */
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} cups_option_t;
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typedef struct /**** Destination ****/
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{
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char *name, /* Printer or class name */
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*instance; /* Local instance name or NULL */
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int is_default; /* Is this printer the default? */
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int num_options; /* Number of options */
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cups_option_t *options; /* Options */
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} cups_dest_t;
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typedef cups_dest_t* (PR_CALLBACK *CupsGetDestType)(const char *printer,
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const char *instance,
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int num_dests,
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cups_dest_t *dests);
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typedef int (PR_CALLBACK *CupsGetDestsType)(cups_dest_t **dests);
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typedef int (PR_CALLBACK *CupsFreeDestsType)(int num_dests,
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cups_dest_t *dests);
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typedef int (PR_CALLBACK *CupsPrintFileType)(const char *printer,
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const char *filename,
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const char *title,
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int num_options,
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cups_option_t *options);
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typedef int (PR_CALLBACK *CupsTempFdType)(char *filename,
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int length);
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typedef int (PR_CALLBACK *CupsAddOptionType)(const char *name,
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const char *value,
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int num_options,
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cups_option_t **options);
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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() { return nullptr != mCupsLib; }
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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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CupsAddOptionType mCupsAddOption;
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CupsFreeDestsType mCupsFreeDests;
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CupsGetDestType mCupsGetDest;
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CupsGetDestsType mCupsGetDests;
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CupsPrintFileType mCupsPrintFile;
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CupsTempFdType mCupsTempFd;
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private:
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PRLibrary *mCupsLib;
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};
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#endif /* nsCUPSShim_h___ */
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