1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/widget/gtk/nsPSPrinters.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,123 @@
1.4 +/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
1.5 +/* ex: set tabstop=8 softtabstop=4 shiftwidth=4 expandtab: */
1.6 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.7 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.8 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.9 +
1.10 +#include "nscore.h"
1.11 +#include "nsCUPSShim.h"
1.12 +#include "nsIServiceManager.h"
1.13 +#include "nsPSPrinters.h"
1.14 +#include "nsReadableUtils.h" // StringBeginsWith()
1.15 +#include "nsCUPSShim.h"
1.16 +#include "mozilla/Preferences.h"
1.17 +
1.18 +#include "prlink.h"
1.19 +#include "prenv.h"
1.20 +#include "plstr.h"
1.21 +
1.22 +using namespace mozilla;
1.23 +
1.24 +#define NS_CUPS_PRINTER "CUPS/"
1.25 +#define NS_CUPS_PRINTER_LEN (sizeof(NS_CUPS_PRINTER) - 1)
1.26 +
1.27 +/* dummy printer name for the gfx/src/ps driver */
1.28 +#define NS_POSTSCRIPT_DRIVER_NAME "PostScript/"
1.29 +
1.30 +nsCUPSShim gCupsShim;
1.31 +
1.32 +nsPSPrinterList::nsPSPrinterList()
1.33 +{
1.34 + // Should we try cups?
1.35 + if (Preferences::GetBool("print.postscript.cups.enabled", true) &&
1.36 + !gCupsShim.IsInitialized()) {
1.37 + gCupsShim.Init();
1.38 + }
1.39 +}
1.40 +
1.41 +
1.42 +/* Check whether the PostScript module has been disabled at runtime */
1.43 +bool
1.44 +nsPSPrinterList::Enabled()
1.45 +{
1.46 + const char *val = PR_GetEnv("MOZILLA_POSTSCRIPT_ENABLED");
1.47 + if (val && (val[0] == '0' || !PL_strcasecmp(val, "false")))
1.48 + return false;
1.49 +
1.50 + // is the PS module enabled?
1.51 + return Preferences::GetBool("print.postscript.enabled", true);
1.52 +}
1.53 +
1.54 +
1.55 +/* Fetch a list of printers handled by the PostsScript module */
1.56 +void
1.57 +nsPSPrinterList::GetPrinterList(nsTArray<nsCString>& aList)
1.58 +{
1.59 + aList.Clear();
1.60 +
1.61 + // Query CUPS for a printer list. The default printer goes to the
1.62 + // head of the output list; others are appended.
1.63 + if (gCupsShim.IsInitialized()) {
1.64 + cups_dest_t *dests;
1.65 +
1.66 + int num_dests = (gCupsShim.mCupsGetDests)(&dests);
1.67 + if (num_dests) {
1.68 + for (int i = 0; i < num_dests; i++) {
1.69 + nsAutoCString fullName(NS_CUPS_PRINTER);
1.70 + fullName.Append(dests[i].name);
1.71 + if (dests[i].instance != nullptr) {
1.72 + fullName.Append("/");
1.73 + fullName.Append(dests[i].instance);
1.74 + }
1.75 + if (dests[i].is_default)
1.76 + aList.InsertElementAt(0, fullName);
1.77 + else
1.78 + aList.AppendElement(fullName);
1.79 + }
1.80 + }
1.81 + (gCupsShim.mCupsFreeDests)(num_dests, dests);
1.82 + }
1.83 +
1.84 + // Build the "classic" list of printers -- those accessed by running
1.85 + // an opaque command. This list always contains a printer named "default".
1.86 + // In addition, we look for either an environment variable
1.87 + // MOZILLA_POSTSCRIPT_PRINTER_LIST or a preference setting
1.88 + // print.printer_list, which contains a space-separated list of printer
1.89 + // names.
1.90 + aList.AppendElement(
1.91 + NS_LITERAL_CSTRING(NS_POSTSCRIPT_DRIVER_NAME "default"));
1.92 +
1.93 + nsAutoCString list(PR_GetEnv("MOZILLA_POSTSCRIPT_PRINTER_LIST"));
1.94 + if (list.IsEmpty()) {
1.95 + list = Preferences::GetCString("print.printer_list");
1.96 + }
1.97 + if (!list.IsEmpty()) {
1.98 + // For each printer (except "default" which was already added),
1.99 + // construct a string "PostScript/<name>" and append it to the list.
1.100 + char *state;
1.101 +
1.102 + for (char *name = PL_strtok_r(list.BeginWriting(), " ", &state);
1.103 + nullptr != name;
1.104 + name = PL_strtok_r(nullptr, " ", &state)
1.105 + ) {
1.106 + if (0 != strcmp(name, "default")) {
1.107 + nsAutoCString fullName(NS_POSTSCRIPT_DRIVER_NAME);
1.108 + fullName.Append(name);
1.109 + aList.AppendElement(fullName);
1.110 + }
1.111 + }
1.112 + }
1.113 +}
1.114 +
1.115 +
1.116 +/* Identify the printer type */
1.117 +nsPSPrinterList::PrinterType
1.118 +nsPSPrinterList::GetPrinterType(const nsACString& aName)
1.119 +{
1.120 + if (StringBeginsWith(aName, NS_LITERAL_CSTRING(NS_POSTSCRIPT_DRIVER_NAME)))
1.121 + return kTypePS;
1.122 + else if (StringBeginsWith(aName, NS_LITERAL_CSTRING(NS_CUPS_PRINTER)))
1.123 + return kTypeCUPS;
1.124 + else
1.125 + return kTypeUnknown;
1.126 +}
