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ghostscript-printer-app.c
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ghostscript-printer-app.c
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//
// Ghostscript (Foomatic) Printer Application based on PAPPL and
// libpappl-retrofit
//
// Copyright © 2020-2021 by Till Kamppeter.
// Copyright © 2020 by Michael R Sweet.
//
// Licensed under Apache License v2.0. See the file "LICENSE" for more
// information.
//
//
// Include necessary headers...
//
#include <pappl-retrofit/base.h>
//
// Constants...
//
// Name and version
#define SYSTEM_NAME "Ghostscript Printer Application"
#define SYSTEM_PACKAGE_NAME "ghostscript-printer-app"
#define SYSTEM_VERSION_STR "1.0"
#define SYSTEM_VERSION_ARR_0 1
#define SYSTEM_VERSION_ARR_1 0
#define SYSTEM_VERSION_ARR_2 0
#define SYSTEM_VERSION_ARR_3 0
#define SYSTEM_WEB_IF_FOOTER "Copyright © 2021 by Till Kamppeter. Provided under the terms of the <a href=\"https://www.apache.org/licenses/LICENSE-2.0\">Apache License 2.0</a>."
// Test page
#define TESTPAGE "testpage.pdf"
//
// Spooling conversions
//
// When using the fxlinuxprint driver for the non-IPP-driverless PDF
// printers from Fuji Xerox convert PDF with the driver's "pdftopdffx"
// filter
// Raster input does not need extra conversion rules, here we make use
// of the PostScript input support of the driver
static pr_spooling_conversion_t ghostscript_convert_pdf_to_fx_pdf =
{
"application/pdf",
"application/vnd.cups-pdfprintfx",
2,
{
{
cfFilterPDFToPDF,
NULL,
"pdftopdf"
},
{
ppdFilterExternalCUPS,
&((ppd_filter_external_cups_t){
"pdftopdffx",
0,
NULL,
0,
NULL,
NULL
}),
"pdftopdffx"
}
}
};
//
// 'ghostscript_autoadd()' - Auto-add printers.
//
const char * // O - Driver name or `NULL` for none
ghostscript_autoadd(const char *device_info, // I - Device name (unused)
const char *device_uri, // I - Device URI (unused)
const char *device_id, // I - IEEE-1284 device ID
void *data) // I - Global data
{
pr_printer_app_global_data_t *global_data =
(pr_printer_app_global_data_t *)data;
const char *ret = NULL; // Return value
(void)device_info;
(void)device_uri;
if (device_id == NULL || global_data == NULL)
return (NULL);
//
// Find the best-matching PPD file to expicitly support our printer model
if (!((ret = pr_best_matching_ppd(device_id, global_data)) != 0 ||
// No dedicated support for this model, look at the COMMAND
// SET (CMD) key in the device ID for the list of printer
// languages and select a generic driver if we find a
// supported language
(pr_supports_postscript(device_id) &&
(ret = pr_best_matching_ppd("MFG:Generic;MDL:PostScript Printer;",
global_data)) != 0) ||
(pr_supports_pclxl(device_id) &&
(ret = pr_best_matching_ppd("MFG:Generic;MDL:PCL 6/PCL XL Printer;",
global_data)) != 0) ||
(pr_supports_pcl5c(device_id) &&
(ret = pr_best_matching_ppd("MFG:Generic;MDL:PCL 5c Printer;",
global_data)) != 0) ||
(pr_supports_pcl5(device_id) &&
(ret = pr_best_matching_ppd("MFG:Generic;MDL:PCL 5e Printer;",
global_data)) != 0)))
// Printer does not support our PDL, it is not supported by this
// Printer Application
ret = NULL;
return (ret);
}
//
// 'main()' - Main entry for the ghostscript-printer-app.
//
int
main(int argc, // I - Number of command-line arguments
char *argv[]) // I - Command-line arguments
{
cups_array_t *spooling_conversions,
*stream_formats,
*driver_selection_regex_list;
// Array of spooling conversions, most desirables first
//
// Here we prefer not converting into another format
// Keeping vector formats (like PS -> PDF) is usually more desirable
// but as many printers have buggy PS interpreters we prefer converting
// PDF to Raster and not to PS
spooling_conversions = cupsArrayNew(NULL, NULL);
// Special conversion rule for fxlinuxprint driver (Fuji Xerox
// non-IPP-driverless PDF printers)
cupsArrayAdd(spooling_conversions, &ghostscript_convert_pdf_to_fx_pdf);
// Standard conversion rules
cupsArrayAdd(spooling_conversions, &pr_convert_pdf_to_pdf);
cupsArrayAdd(spooling_conversions, &pr_convert_pdf_to_raster);
cupsArrayAdd(spooling_conversions, &pr_convert_pdf_to_ps);
cupsArrayAdd(spooling_conversions, &pr_convert_ps_to_ps);
cupsArrayAdd(spooling_conversions, &pr_convert_ps_to_pdf);
cupsArrayAdd(spooling_conversions, &pr_convert_ps_to_raster);
// Array of stream formats, most desirables first
//
// PDF comes last because it is generally not streamable.
// PostScript comes second as it is Ghostscript's streamable
// input format.
stream_formats = cupsArrayNew(NULL, NULL);
cupsArrayAdd(stream_formats, &pr_stream_cups_raster);
cupsArrayAdd(stream_formats, &pr_stream_postscript);
cupsArrayAdd(stream_formats, &pr_stream_pdf);
// Array of regular expressions for driver priorization
// For some printers the "(recommended)" is missing ...
driver_selection_regex_list = cupsArrayNew(NULL, NULL);
cupsArrayAdd(driver_selection_regex_list, "-recommended-");
cupsArrayAdd(driver_selection_regex_list, "-pdf-");
cupsArrayAdd(driver_selection_regex_list, "-postscript-");
cupsArrayAdd(driver_selection_regex_list, "-pxlcolor-");
cupsArrayAdd(driver_selection_regex_list, "-hpijs-pcl-5-c-");
cupsArrayAdd(driver_selection_regex_list, "-cljet-5-");
cupsArrayAdd(driver_selection_regex_list, "-pxl-");
cupsArrayAdd(driver_selection_regex_list, "-pxlmono-");
cupsArrayAdd(driver_selection_regex_list, "-lj-5-gray-");
cupsArrayAdd(driver_selection_regex_list, "-lj-5-mono-");
cupsArrayAdd(driver_selection_regex_list, "-hl-1250-");
cupsArrayAdd(driver_selection_regex_list, "-hl-7-x-0-");
cupsArrayAdd(driver_selection_regex_list, "-hpijs-pcl-5-e-");
cupsArrayAdd(driver_selection_regex_list, "-pcl-5-");
cupsArrayAdd(driver_selection_regex_list, "-ljet-4-d-");
cupsArrayAdd(driver_selection_regex_list, "-ljet-4-");
cupsArrayAdd(driver_selection_regex_list, "-lj-4-dith");
cupsArrayAdd(driver_selection_regex_list, "-ljet-3-d-");
cupsArrayAdd(driver_selection_regex_list, "-ljet-3-");
cupsArrayAdd(driver_selection_regex_list, "-laserjet-");
cupsArrayAdd(driver_selection_regex_list, "-ljet-2-p-");
cupsArrayAdd(driver_selection_regex_list, "-ljetplus-");
cupsArrayAdd(driver_selection_regex_list, "-pcl-3-");
// Configuration record of the Printer Application
pr_printer_app_config_t printer_app_config =
{
SYSTEM_NAME, // Display name for Printer Application
SYSTEM_PACKAGE_NAME, // Package/executable name
SYSTEM_VERSION_STR, // Version as a string
{
SYSTEM_VERSION_ARR_0, // Version 1st number
SYSTEM_VERSION_ARR_1, // 2nd
SYSTEM_VERSION_ARR_2, // 3rd
SYSTEM_VERSION_ARR_3 // 4th
},
SYSTEM_WEB_IF_FOOTER, // Footer for web interface (in HTML)
PR_COPTIONS_QUERY_PS_DEFAULTS | // pappl-retrofit special features to be
PR_COPTIONS_NO_GENERIC_DRIVER | // used
#if !SNAP
PR_COPTIONS_USE_ONLY_MATCHING_NICKNAMES |
#endif // !SNAP
PR_COPTIONS_NO_PAPPL_BACKENDS |
PR_COPTIONS_CUPS_BACKENDS,
ghostscript_autoadd, // Auto-add (driver assignment) callback
pr_identify, // Printer identify callback
pr_testpage, // Test page print callback
NULL, // No extra setup steps for the system
pr_setup_device_settings_page, // Set up "Device Settings" printer web
// interface page
spooling_conversions, // Array of data format conversion rules for
// printing in spooling mode
stream_formats, // Arrray for stream formats to be generated
// when printing in streaming mode
"", // CUPS backends to be ignored
"snmp,dnssd,usb", // CUPS backends to be used exclusively
// If empty all but the ignored backends are used
TESTPAGE, // Test page (printable file), used by the
// standard test print callback pr_testpage()
" +Foomatic/(.+)$| +(PDF|PXL|PCL5)$",
// Regular expression to separate the
// extra information after make/model in
// the PPD's *NickName. Also extracts a
// contained driver name (by using
// parentheses)
driver_selection_regex_list
// Regular expression for the driver
// auto-selection to prioritize a driver
// when there is more than one for a
// given printer. If a regular
// expression matches on the driver
// name, the driver gets priority. If
// there is more than one matching
// driver, the driver name on which the
// earlier regular expression in the
// list matches, gets the priority.
};
return (pr_retrofit_printer_app(&printer_app_config, argc, argv));
}