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-rw-r--r--widget/gtk/nsPSPrinters.cpp123
1 files changed, 123 insertions, 0 deletions
diff --git a/widget/gtk/nsPSPrinters.cpp b/widget/gtk/nsPSPrinters.cpp
new file mode 100644
index 000000000..2d3183e9a
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+++ b/widget/gtk/nsPSPrinters.cpp
@@ -0,0 +1,123 @@
+/* -*- 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/. */
+
+#include "nscore.h"
+#include "nsCUPSShim.h"
+#include "nsIServiceManager.h"
+#include "nsPSPrinters.h"
+#include "nsReadableUtils.h" // StringBeginsWith()
+#include "nsCUPSShim.h"
+#include "mozilla/Preferences.h"
+
+#include "prlink.h"
+#include "prenv.h"
+#include "plstr.h"
+
+using namespace mozilla;
+
+#define NS_CUPS_PRINTER "CUPS/"
+#define NS_CUPS_PRINTER_LEN (sizeof(NS_CUPS_PRINTER) - 1)
+
+/* dummy printer name for the gfx/src/ps driver */
+#define NS_POSTSCRIPT_DRIVER_NAME "PostScript/"
+
+nsCUPSShim gCupsShim;
+
+nsPSPrinterList::nsPSPrinterList()
+{
+ // Should we try cups?
+ if (Preferences::GetBool("print.postscript.cups.enabled", true) &&
+ !gCupsShim.IsInitialized()) {
+ gCupsShim.Init();
+ }
+}
+
+
+/* Check whether the PostScript module has been disabled at runtime */
+bool
+nsPSPrinterList::Enabled()
+{
+ const char *val = PR_GetEnv("MOZILLA_POSTSCRIPT_ENABLED");
+ if (val && (val[0] == '0' || !PL_strcasecmp(val, "false")))
+ return false;
+
+ // is the PS module enabled?
+ return Preferences::GetBool("print.postscript.enabled", true);
+}
+
+
+/* Fetch a list of printers handled by the PostsScript module */
+void
+nsPSPrinterList::GetPrinterList(nsTArray<nsCString>& aList)
+{
+ aList.Clear();
+
+ // Query CUPS for a printer list. The default printer goes to the
+ // head of the output list; others are appended.
+ if (gCupsShim.IsInitialized()) {
+ cups_dest_t *dests;
+
+ int num_dests = (gCupsShim.mCupsGetDests)(&dests);
+ if (num_dests) {
+ for (int i = 0; i < num_dests; i++) {
+ nsAutoCString fullName(NS_CUPS_PRINTER);
+ fullName.Append(dests[i].name);
+ if (dests[i].instance != nullptr) {
+ fullName.Append('/');
+ fullName.Append(dests[i].instance);
+ }
+ if (dests[i].is_default)
+ aList.InsertElementAt(0, fullName);
+ else
+ aList.AppendElement(fullName);
+ }
+ }
+ (gCupsShim.mCupsFreeDests)(num_dests, dests);
+ }
+
+ // Build the "classic" list of printers -- those accessed by running
+ // an opaque command. This list always contains a printer named "default".
+ // In addition, we look for either an environment variable
+ // MOZILLA_POSTSCRIPT_PRINTER_LIST or a preference setting
+ // print.printer_list, which contains a space-separated list of printer
+ // names.
+ aList.AppendElement(
+ NS_LITERAL_CSTRING(NS_POSTSCRIPT_DRIVER_NAME "default"));
+
+ nsAutoCString list(PR_GetEnv("MOZILLA_POSTSCRIPT_PRINTER_LIST"));
+ if (list.IsEmpty()) {
+ list = Preferences::GetCString("print.printer_list");
+ }
+ if (!list.IsEmpty()) {
+ // For each printer (except "default" which was already added),
+ // construct a string "PostScript/<name>" and append it to the list.
+ char *state;
+
+ for (char *name = PL_strtok_r(list.BeginWriting(), " ", &state);
+ nullptr != name;
+ name = PL_strtok_r(nullptr, " ", &state)
+ ) {
+ if (0 != strcmp(name, "default")) {
+ nsAutoCString fullName(NS_POSTSCRIPT_DRIVER_NAME);
+ fullName.Append(name);
+ aList.AppendElement(fullName);
+ }
+ }
+ }
+}
+
+
+/* Identify the printer type */
+nsPSPrinterList::PrinterType
+nsPSPrinterList::GetPrinterType(const nsACString& aName)
+{
+ if (StringBeginsWith(aName, NS_LITERAL_CSTRING(NS_POSTSCRIPT_DRIVER_NAME)))
+ return kTypePS;
+ else if (StringBeginsWith(aName, NS_LITERAL_CSTRING(NS_CUPS_PRINTER)))
+ return kTypeCUPS;
+ else
+ return kTypeUnknown;
+}