зеркало из https://github.com/mozilla/pjs.git
156 строки
5.4 KiB
C++
156 строки
5.4 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 "nscore.h"
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#include "nsCUPSShim.h"
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#include "nsIServiceManager.h"
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#include "nsPSPrinters.h"
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#include "nsReadableUtils.h" // StringBeginsWith()
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#include "nsCUPSShim.h"
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#include "mozilla/Preferences.h"
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#include "prlink.h"
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#include "prenv.h"
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#include "plstr.h"
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using namespace mozilla;
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#define NS_CUPS_PRINTER "CUPS/"
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#define NS_CUPS_PRINTER_LEN (sizeof(NS_CUPS_PRINTER) - 1)
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/* dummy printer name for the gfx/src/ps driver */
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#define NS_POSTSCRIPT_DRIVER_NAME "PostScript/"
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nsCUPSShim gCupsShim;
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nsPSPrinterList::nsPSPrinterList()
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{
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// Should we try cups?
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if (Preferences::GetBool("print.postscript.cups.enabled", true) &&
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!gCupsShim.IsInitialized()) {
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gCupsShim.Init();
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}
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}
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/* Check whether the PostScript module has been disabled at runtime */
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bool
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nsPSPrinterList::Enabled()
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{
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const char *val = PR_GetEnv("MOZILLA_POSTSCRIPT_ENABLED");
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if (val && (val[0] == '0' || !PL_strcasecmp(val, "false")))
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return false;
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// is the PS module enabled?
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return Preferences::GetBool("print.postscript.enabled", true);
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}
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/* Fetch a list of printers handled by the PostsScript module */
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void
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nsPSPrinterList::GetPrinterList(nsTArray<nsCString>& aList)
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{
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aList.Clear();
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// Query CUPS for a printer list. The default printer goes to the
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// head of the output list; others are appended.
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if (gCupsShim.IsInitialized()) {
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cups_dest_t *dests;
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int num_dests = (gCupsShim.mCupsGetDests)(&dests);
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if (num_dests) {
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for (int i = 0; i < num_dests; i++) {
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nsCAutoString fullName(NS_CUPS_PRINTER);
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fullName.Append(dests[i].name);
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if (dests[i].instance != NULL) {
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fullName.Append("/");
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fullName.Append(dests[i].instance);
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}
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if (dests[i].is_default)
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aList.InsertElementAt(0, fullName);
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else
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aList.AppendElement(fullName);
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}
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}
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(gCupsShim.mCupsFreeDests)(num_dests, dests);
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}
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// Build the "classic" list of printers -- those accessed by running
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// an opaque command. This list always contains a printer named "default".
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// In addition, we look for either an environment variable
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// MOZILLA_POSTSCRIPT_PRINTER_LIST or a preference setting
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// print.printer_list, which contains a space-separated list of printer
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// names.
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aList.AppendElement(
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NS_LITERAL_CSTRING(NS_POSTSCRIPT_DRIVER_NAME "default"));
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nsCAutoString list(PR_GetEnv("MOZILLA_POSTSCRIPT_PRINTER_LIST"));
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if (list.IsEmpty()) {
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list = Preferences::GetCString("print.printer_list");
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}
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if (!list.IsEmpty()) {
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// For each printer (except "default" which was already added),
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// construct a string "PostScript/<name>" and append it to the list.
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char *state;
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for (char *name = PL_strtok_r(list.BeginWriting(), " ", &state);
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nsnull != name;
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name = PL_strtok_r(nsnull, " ", &state)
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) {
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if (0 != strcmp(name, "default")) {
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nsCAutoString fullName(NS_POSTSCRIPT_DRIVER_NAME);
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fullName.Append(name);
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aList.AppendElement(fullName);
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}
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}
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}
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}
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/* Identify the printer type */
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nsPSPrinterList::PrinterType
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nsPSPrinterList::GetPrinterType(const nsACString& aName)
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{
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if (StringBeginsWith(aName, NS_LITERAL_CSTRING(NS_POSTSCRIPT_DRIVER_NAME)))
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return kTypePS;
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else if (StringBeginsWith(aName, NS_LITERAL_CSTRING(NS_CUPS_PRINTER)))
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return kTypeCUPS;
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else
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return kTypeUnknown;
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}
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