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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ex: set tabstop=8 softtabstop=4 shiftwidth=4 expandtab: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef nsCUPSShim_h___
#define nsCUPSShim_h___
/* Various CUPS data types. We don't #include cups headers to avoid
* requiring CUPS to be installed on the build host (and to avoid having
* to test for CUPS in configure).
*/
typedef struct /**** Printer Options ****/
{
char *name; /* Name of option */
char *value; /* Value of option */
} cups_option_t;
typedef struct /**** Destination ****/
{
char *name, /* Printer or class name */
*instance; /* Local instance name or nullptr */
int is_default; /* Is this printer the default? */
int num_options; /* Number of options */
cups_option_t *options; /* Options */
} cups_dest_t;
typedef cups_dest_t* (*CupsGetDestType)(const char *printer,
const char *instance,
int num_dests,
cups_dest_t *dests);
typedef int (*CupsGetDestsType)(cups_dest_t **dests);
typedef int (*CupsFreeDestsType)(int num_dests,
cups_dest_t *dests);
typedef int (*CupsPrintFileType)(const char *printer,
const char *filename,
const char *title,
int num_options,
cups_option_t *options);
typedef int (*CupsTempFdType)(char *filename,
int length);
typedef int (*CupsAddOptionType)(const char *name,
const char *value,
int num_options,
cups_option_t **options);
struct PRLibrary;
/* Note: this class relies on static initialization. */
class nsCUPSShim {
public:
/**
* Initialize this object. Attempt to load the CUPS shared
* library and find function pointers for the supported
* functions (see below).
* @return false if the shared library could not be loaded, or if
* any of the functions could not be found.
* true for successful initialization.
*/
bool Init();
/**
* @return true if the object was initialized successfully.
* false otherwise.
*/
bool IsInitialized() { return nullptr != mCupsLib; }
/* Function pointers for supported functions. These are only
* valid after successful initialization.
*/
CupsAddOptionType mCupsAddOption;
CupsFreeDestsType mCupsFreeDests;
CupsGetDestType mCupsGetDest;
CupsGetDestsType mCupsGetDests;
CupsPrintFileType mCupsPrintFile;
CupsTempFdType mCupsTempFd;
private:
PRLibrary *mCupsLib;
};
#endif /* nsCUPSShim_h___ */
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