forked from mirrors/gecko-dev
4d956f9599
MozReview-Commit-ID: CTz0tRr3p57 --HG-- extra : rebase_source : 500687c604957227dba8668a11f7c4f55c7fd175
778 lines
25 KiB
C++
778 lines
25 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* vim:expandtab:shiftwidth=4:tabstop=4:
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*/
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/ArrayUtils.h"
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#include "nsArrayUtils.h"
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#include "nsClipboard.h"
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#include "nsClipboardX11.h"
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#if defined(MOZ_WAYLAND)
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#include "nsClipboardWayland.h"
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#endif
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#include "HeadlessClipboard.h"
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#include "nsSupportsPrimitives.h"
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#include "nsString.h"
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#include "nsReadableUtils.h"
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#include "nsPrimitiveHelpers.h"
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#include "nsIServiceManager.h"
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#include "nsImageToPixbuf.h"
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#include "nsStringStream.h"
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#include "nsIObserverService.h"
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#include "mozilla/Services.h"
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#include "mozilla/RefPtr.h"
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#include "mozilla/TimeStamp.h"
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#include "imgIContainer.h"
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#include <gtk/gtk.h>
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#include <gtk/gtkx.h>
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#include "mozilla/Encoding.h"
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using namespace mozilla;
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// Idle timeout for receiving selection and property notify events (microsec)
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const int kClipboardTimeout = 500000;
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// Callback when someone asks us for the data
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void
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clipboard_get_cb(GtkClipboard *aGtkClipboard,
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GtkSelectionData *aSelectionData,
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guint info,
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gpointer user_data);
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// Callback when someone asks us to clear a clipboard
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void
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clipboard_clear_cb(GtkClipboard *aGtkClipboard,
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gpointer user_data);
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static void
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ConvertHTMLtoUCS2 (const char* data,
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int32_t dataLength,
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char16_t **unicodeData,
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int32_t &outUnicodeLen);
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static void
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GetHTMLCharset (const char* data, int32_t dataLength, nsCString& str);
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GdkAtom
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GetSelectionAtom(int32_t aWhichClipboard)
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{
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if (aWhichClipboard == nsIClipboard::kGlobalClipboard)
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return GDK_SELECTION_CLIPBOARD;
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return GDK_SELECTION_PRIMARY;
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}
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nsClipboard::nsClipboard()
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{
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}
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nsClipboard::~nsClipboard()
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{
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// We have to clear clipboard before gdk_display_close() call.
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// See bug 531580 for details.
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if (mGlobalTransferable) {
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gtk_clipboard_clear(gtk_clipboard_get(GDK_SELECTION_CLIPBOARD));
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}
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if (mSelectionTransferable) {
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gtk_clipboard_clear(gtk_clipboard_get(GDK_SELECTION_PRIMARY));
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}
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}
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NS_IMPL_ISUPPORTS(nsClipboard, nsIClipboard)
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nsresult
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nsClipboard::Init(void)
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{
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GdkDisplay *display = gdk_display_get_default();
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// Create a nsRetrievalContext. If there's no default display
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// create the X11 one as a fallback.
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if (!display || GDK_IS_X11_DISPLAY(display)) {
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mContext = new nsRetrievalContextX11();
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#if defined(MOZ_WAYLAND)
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} else {
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mContext = new nsRetrievalContextWayland();
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#endif
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}
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NS_ASSERTION(mContext, "Missing nsRetrievalContext for nsClipboard!");
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nsCOMPtr<nsIObserverService> os = mozilla::services::GetObserverService();
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if (os) {
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os->AddObserver(this, "quit-application", false);
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os->AddObserver(this, "xpcom-shutdown", false);
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}
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return NS_OK;
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}
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nsresult
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nsClipboard::Store(void)
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{
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if (mGlobalTransferable) {
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GtkClipboard *clipboard = gtk_clipboard_get(GDK_SELECTION_CLIPBOARD);
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gtk_clipboard_store(clipboard);
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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nsClipboard::Observe(nsISupports *aSubject, const char *aTopic,
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const char16_t *aData)
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{
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Store();
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return NS_OK;
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}
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NS_IMETHODIMP
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nsClipboard::SetData(nsITransferable *aTransferable,
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nsIClipboardOwner *aOwner, int32_t aWhichClipboard)
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{
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// See if we can short cut
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if ((aWhichClipboard == kGlobalClipboard &&
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aTransferable == mGlobalTransferable.get() &&
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aOwner == mGlobalOwner.get()) ||
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(aWhichClipboard == kSelectionClipboard &&
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aTransferable == mSelectionTransferable.get() &&
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aOwner == mSelectionOwner.get())) {
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return NS_OK;
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}
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// Clear out the clipboard in order to set the new data
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EmptyClipboard(aWhichClipboard);
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// List of suported targets
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GtkTargetList *list = gtk_target_list_new(nullptr, 0);
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// Get the types of supported flavors
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nsCOMPtr<nsIArray> flavors;
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nsresult rv =
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aTransferable->FlavorsTransferableCanExport(getter_AddRefs(flavors));
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if (!flavors || NS_FAILED(rv))
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return NS_ERROR_FAILURE;
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// Add all the flavors to this widget's supported type.
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bool imagesAdded = false;
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uint32_t count;
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flavors->GetLength(&count);
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for (uint32_t i=0; i < count; i++) {
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nsCOMPtr<nsISupportsCString> flavor = do_QueryElementAt(flavors, i);
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if (flavor) {
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nsCString flavorStr;
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flavor->ToString(getter_Copies(flavorStr));
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// special case text/unicode since we can handle all of
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// the string types
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if (flavorStr.EqualsLiteral(kUnicodeMime)) {
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gtk_target_list_add(list, gdk_atom_intern("UTF8_STRING", FALSE), 0, 0);
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gtk_target_list_add(list, gdk_atom_intern("COMPOUND_TEXT", FALSE), 0, 0);
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gtk_target_list_add(list, gdk_atom_intern("TEXT", FALSE), 0, 0);
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gtk_target_list_add(list, GDK_SELECTION_TYPE_STRING, 0, 0);
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continue;
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}
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if (flavorStr.EqualsLiteral(kNativeImageMime) ||
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flavorStr.EqualsLiteral(kPNGImageMime) ||
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flavorStr.EqualsLiteral(kJPEGImageMime) ||
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flavorStr.EqualsLiteral(kJPGImageMime) ||
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flavorStr.EqualsLiteral(kGIFImageMime)) {
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// don't bother adding image targets twice
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if (!imagesAdded) {
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// accept any writable image type
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gtk_target_list_add_image_targets(list, 0, TRUE);
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imagesAdded = true;
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}
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continue;
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}
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// Add this to our list of valid targets
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GdkAtom atom = gdk_atom_intern(flavorStr.get(), FALSE);
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gtk_target_list_add(list, atom, 0, 0);
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}
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}
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// Get GTK clipboard (CLIPBOARD or PRIMARY)
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GtkClipboard *gtkClipboard = gtk_clipboard_get(GetSelectionAtom(aWhichClipboard));
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gint numTargets;
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GtkTargetEntry *gtkTargets = gtk_target_table_new_from_list(list, &numTargets);
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// Set getcallback and request to store data after an application exit
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if (gtkTargets &&
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gtk_clipboard_set_with_data(gtkClipboard, gtkTargets, numTargets,
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clipboard_get_cb, clipboard_clear_cb, this))
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{
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// We managed to set-up the clipboard so update internal state
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// We have to set it now because gtk_clipboard_set_with_data() calls clipboard_clear_cb()
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// which reset our internal state
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if (aWhichClipboard == kSelectionClipboard) {
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mSelectionOwner = aOwner;
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mSelectionTransferable = aTransferable;
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}
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else {
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mGlobalOwner = aOwner;
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mGlobalTransferable = aTransferable;
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gtk_clipboard_set_can_store(gtkClipboard, gtkTargets, numTargets);
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}
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rv = NS_OK;
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}
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else {
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rv = NS_ERROR_FAILURE;
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}
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gtk_target_table_free(gtkTargets, numTargets);
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gtk_target_list_unref(list);
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return rv;
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}
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void
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nsClipboard::SetTransferableData(nsITransferable* aTransferable,
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nsCString& aFlavor,
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const char* aClipboardData,
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uint32_t aClipboardDataLength)
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{
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nsCOMPtr<nsISupports> wrapper;
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nsPrimitiveHelpers::CreatePrimitiveForData(aFlavor,
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aClipboardData,
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aClipboardDataLength,
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getter_AddRefs(wrapper));
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aTransferable->SetTransferData(aFlavor.get(),
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wrapper, aClipboardDataLength);
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}
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NS_IMETHODIMP
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nsClipboard::GetData(nsITransferable *aTransferable, int32_t aWhichClipboard)
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{
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if (!aTransferable)
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return NS_ERROR_FAILURE;
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// Get a list of flavors this transferable can import
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nsCOMPtr<nsIArray> flavors;
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nsresult rv;
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rv = aTransferable->FlavorsTransferableCanImport(getter_AddRefs(flavors));
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if (!flavors || NS_FAILED(rv))
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return NS_ERROR_FAILURE;
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uint32_t count;
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flavors->GetLength(&count);
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for (uint32_t i=0; i < count; i++) {
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nsCOMPtr<nsISupportsCString> currentFlavor;
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currentFlavor = do_QueryElementAt(flavors, i);
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if (!currentFlavor)
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continue;
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nsCString flavorStr;
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currentFlavor->ToString(getter_Copies(flavorStr));
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if (flavorStr.EqualsLiteral(kJPEGImageMime) ||
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flavorStr.EqualsLiteral(kJPGImageMime) ||
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flavorStr.EqualsLiteral(kPNGImageMime) ||
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flavorStr.EqualsLiteral(kGIFImageMime)) {
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// Emulate support for image/jpg
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if (flavorStr.EqualsLiteral(kJPGImageMime)) {
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flavorStr.Assign(kJPEGImageMime);
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}
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uint32_t clipboardDataLength;
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const char* clipboardData =
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mContext->GetClipboardData(flavorStr.get(),
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aWhichClipboard,
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&clipboardDataLength);
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if (!clipboardData)
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continue;
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nsCOMPtr<nsIInputStream> byteStream;
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NS_NewByteInputStream(getter_AddRefs(byteStream),
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clipboardData,
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clipboardDataLength,
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NS_ASSIGNMENT_COPY);
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aTransferable->SetTransferData(flavorStr.get(), byteStream,
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sizeof(nsIInputStream*));
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mContext->ReleaseClipboardData(clipboardData);
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return NS_OK;
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}
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// Special case text/unicode since we can convert any
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// string into text/unicode
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if (flavorStr.EqualsLiteral(kUnicodeMime)) {
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const char* clipboardData =
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mContext->GetClipboardText(aWhichClipboard);
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if (!clipboardData) {
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// If the type was text/unicode and we couldn't get
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// text off the clipboard, run the next loop
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// iteration.
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continue;
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}
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// Convert utf-8 into our unicode format.
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NS_ConvertUTF8toUTF16 ucs2string(clipboardData);
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const char* unicodeData = (const char *)ToNewUnicode(ucs2string);
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uint32_t unicodeDataLength = ucs2string.Length() * 2;
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SetTransferableData(aTransferable, flavorStr,
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unicodeData, unicodeDataLength);
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free((void *)unicodeData);
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mContext->ReleaseClipboardData(clipboardData);
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return NS_OK;
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}
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uint32_t clipboardDataLength;
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const char* clipboardData = mContext->GetClipboardData(
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flavorStr.get(), aWhichClipboard, &clipboardDataLength);
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if (clipboardData) {
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// Special case text/html since we can convert into UCS2
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if (flavorStr.EqualsLiteral(kHTMLMime)) {
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char16_t* htmlBody = nullptr;
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int32_t htmlBodyLen = 0;
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// Convert text/html into our unicode format
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ConvertHTMLtoUCS2(clipboardData, clipboardDataLength,
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&htmlBody, htmlBodyLen);
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// Try next data format?
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if (!htmlBodyLen) {
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mContext->ReleaseClipboardData(clipboardData);
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continue;
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}
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SetTransferableData(aTransferable, flavorStr,
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(const char*)htmlBody, htmlBodyLen * 2);
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free(htmlBody);
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} else {
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SetTransferableData(aTransferable, flavorStr,
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clipboardData, clipboardDataLength);
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}
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mContext->ReleaseClipboardData(clipboardData);
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return NS_OK;
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}
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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nsClipboard::EmptyClipboard(int32_t aWhichClipboard)
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{
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if (aWhichClipboard == kSelectionClipboard) {
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if (mSelectionOwner) {
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mSelectionOwner->LosingOwnership(mSelectionTransferable);
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mSelectionOwner = nullptr;
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}
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mSelectionTransferable = nullptr;
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}
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else {
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if (mGlobalOwner) {
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mGlobalOwner->LosingOwnership(mGlobalTransferable);
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mGlobalOwner = nullptr;
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}
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mGlobalTransferable = nullptr;
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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nsClipboard::HasDataMatchingFlavors(const char** aFlavorList, uint32_t aLength,
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int32_t aWhichClipboard, bool *_retval)
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{
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if (!aFlavorList || !_retval)
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return NS_ERROR_NULL_POINTER;
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*_retval = false;
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int targetNums;
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GdkAtom* targets = mContext->GetTargets(aWhichClipboard, &targetNums);
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if (!targets)
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return NS_OK;
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// Walk through the provided types and try to match it to a
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// provided type.
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for (uint32_t i = 0; i < aLength && !*_retval; i++) {
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// We special case text/unicode here.
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if (!strcmp(aFlavorList[i], kUnicodeMime) &&
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gtk_targets_include_text(targets, targetNums)) {
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*_retval = true;
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break;
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}
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for (int32_t j = 0; j < targetNums; j++) {
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gchar *atom_name = gdk_atom_name(targets[j]);
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if (!atom_name)
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continue;
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if (!strcmp(atom_name, aFlavorList[i]))
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*_retval = true;
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// X clipboard supports image/jpeg, but we want to emulate support
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// for image/jpg as well
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if (!strcmp(aFlavorList[i], kJPGImageMime) &&
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!strcmp(atom_name, kJPEGImageMime)) {
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*_retval = true;
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}
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g_free(atom_name);
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if (*_retval)
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break;
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}
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}
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g_free(targets);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsClipboard::SupportsSelectionClipboard(bool *_retval)
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{
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*_retval = mContext->HasSelectionSupport();
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return NS_OK;
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}
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NS_IMETHODIMP
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nsClipboard::SupportsFindClipboard(bool* _retval)
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{
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*_retval = false;
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return NS_OK;
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}
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nsITransferable *
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nsClipboard::GetTransferable(int32_t aWhichClipboard)
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{
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nsITransferable *retval;
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if (aWhichClipboard == kSelectionClipboard)
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retval = mSelectionTransferable.get();
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else
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retval = mGlobalTransferable.get();
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return retval;
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}
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void
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nsClipboard::SelectionGetEvent(GtkClipboard *aClipboard,
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GtkSelectionData *aSelectionData)
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{
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// Someone has asked us to hand them something. The first thing
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// that we want to do is see if that something includes text. If
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// it does, try to give it text/unicode after converting it to
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// utf-8.
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int32_t whichClipboard;
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// which clipboard?
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GdkAtom selection = gtk_selection_data_get_selection(aSelectionData);
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if (selection == GDK_SELECTION_PRIMARY)
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whichClipboard = kSelectionClipboard;
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else if (selection == GDK_SELECTION_CLIPBOARD)
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whichClipboard = kGlobalClipboard;
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else
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return; // THAT AIN'T NO CLIPBOARD I EVER HEARD OF
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nsCOMPtr<nsITransferable> trans = GetTransferable(whichClipboard);
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if (!trans) {
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// We have nothing to serve
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#ifdef DEBUG_CLIPBOARD
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printf("nsClipboard::SelectionGetEvent() - %s clipboard is empty!\n",
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whichClipboard == kSelectionClipboard ? "Selection" : "Global");
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#endif
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return;
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}
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nsresult rv;
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nsCOMPtr<nsISupports> item;
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uint32_t len;
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GdkAtom selectionTarget = gtk_selection_data_get_target(aSelectionData);
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// Check to see if the selection data includes any of the string
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// types that we support.
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if (selectionTarget == gdk_atom_intern ("STRING", FALSE) ||
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selectionTarget == gdk_atom_intern ("TEXT", FALSE) ||
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selectionTarget == gdk_atom_intern ("COMPOUND_TEXT", FALSE) ||
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selectionTarget == gdk_atom_intern ("UTF8_STRING", FALSE)) {
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// Try to convert our internal type into a text string. Get
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// the transferable for this clipboard and try to get the
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// text/unicode type for it.
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rv = trans->GetTransferData("text/unicode", getter_AddRefs(item),
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&len);
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if (!item || NS_FAILED(rv))
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return;
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nsCOMPtr<nsISupportsString> wideString;
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wideString = do_QueryInterface(item);
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if (!wideString)
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return;
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nsAutoString ucs2string;
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wideString->GetData(ucs2string);
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char *utf8string = ToNewUTF8String(ucs2string);
|
|
if (!utf8string)
|
|
return;
|
|
|
|
gtk_selection_data_set_text (aSelectionData, utf8string,
|
|
strlen(utf8string));
|
|
|
|
free(utf8string);
|
|
return;
|
|
}
|
|
|
|
// Check to see if the selection data is an image type
|
|
if (gtk_targets_include_image(&selectionTarget, 1, TRUE)) {
|
|
// Look through our transfer data for the image
|
|
static const char* const imageMimeTypes[] = {
|
|
kNativeImageMime, kPNGImageMime, kJPEGImageMime, kJPGImageMime, kGIFImageMime };
|
|
nsCOMPtr<nsISupports> imageItem;
|
|
nsCOMPtr<nsISupportsInterfacePointer> ptrPrimitive;
|
|
for (uint32_t i = 0; !ptrPrimitive && i < ArrayLength(imageMimeTypes); i++) {
|
|
rv = trans->GetTransferData(imageMimeTypes[i], getter_AddRefs(imageItem), &len);
|
|
ptrPrimitive = do_QueryInterface(imageItem);
|
|
}
|
|
if (!ptrPrimitive)
|
|
return;
|
|
|
|
nsCOMPtr<nsISupports> primitiveData;
|
|
ptrPrimitive->GetData(getter_AddRefs(primitiveData));
|
|
nsCOMPtr<imgIContainer> image(do_QueryInterface(primitiveData));
|
|
if (!image) // Not getting an image for an image mime type!?
|
|
return;
|
|
|
|
GdkPixbuf* pixbuf = nsImageToPixbuf::ImageToPixbuf(image);
|
|
if (!pixbuf)
|
|
return;
|
|
|
|
gtk_selection_data_set_pixbuf(aSelectionData, pixbuf);
|
|
g_object_unref(pixbuf);
|
|
return;
|
|
}
|
|
|
|
// Try to match up the selection data target to something our
|
|
// transferable provides.
|
|
gchar *target_name = gdk_atom_name(selectionTarget);
|
|
if (!target_name)
|
|
return;
|
|
|
|
rv = trans->GetTransferData(target_name, getter_AddRefs(item), &len);
|
|
// nothing found?
|
|
if (!item || NS_FAILED(rv)) {
|
|
g_free(target_name);
|
|
return;
|
|
}
|
|
|
|
void *primitive_data = nullptr;
|
|
nsPrimitiveHelpers::CreateDataFromPrimitive(nsDependentCString(target_name),
|
|
item, &primitive_data, len);
|
|
|
|
if (primitive_data) {
|
|
// Check to see if the selection data is text/html
|
|
if (selectionTarget == gdk_atom_intern (kHTMLMime, FALSE)) {
|
|
/*
|
|
* "text/html" can be encoded UCS2. It is recommended that
|
|
* documents transmitted as UCS2 always begin with a ZERO-WIDTH
|
|
* NON-BREAKING SPACE character (hexadecimal FEFF, also called
|
|
* Byte Order Mark (BOM)). Adding BOM can help other app to
|
|
* detect mozilla use UCS2 encoding when copy-paste.
|
|
*/
|
|
guchar *buffer = (guchar *)
|
|
g_malloc((len * sizeof(guchar)) + sizeof(char16_t));
|
|
if (!buffer)
|
|
return;
|
|
char16_t prefix = 0xFEFF;
|
|
memcpy(buffer, &prefix, sizeof(prefix));
|
|
memcpy(buffer + sizeof(prefix), primitive_data, len);
|
|
g_free((guchar *)primitive_data);
|
|
primitive_data = (guchar *)buffer;
|
|
len += sizeof(prefix);
|
|
}
|
|
|
|
gtk_selection_data_set(aSelectionData, selectionTarget,
|
|
8, /* 8 bits in a unit */
|
|
(const guchar *)primitive_data, len);
|
|
g_free(primitive_data);
|
|
}
|
|
|
|
g_free(target_name);
|
|
|
|
}
|
|
|
|
void
|
|
nsClipboard::SelectionClearEvent(GtkClipboard *aGtkClipboard)
|
|
{
|
|
int32_t whichClipboard;
|
|
|
|
// which clipboard?
|
|
if (aGtkClipboard == gtk_clipboard_get(GDK_SELECTION_PRIMARY))
|
|
whichClipboard = kSelectionClipboard;
|
|
else if (aGtkClipboard == gtk_clipboard_get(GDK_SELECTION_CLIPBOARD))
|
|
whichClipboard = kGlobalClipboard;
|
|
else
|
|
return; // THAT AIN'T NO CLIPBOARD I EVER HEARD OF
|
|
|
|
EmptyClipboard(whichClipboard);
|
|
}
|
|
|
|
void
|
|
clipboard_get_cb(GtkClipboard *aGtkClipboard,
|
|
GtkSelectionData *aSelectionData,
|
|
guint info,
|
|
gpointer user_data)
|
|
{
|
|
nsClipboard *aClipboard = static_cast<nsClipboard *>(user_data);
|
|
aClipboard->SelectionGetEvent(aGtkClipboard, aSelectionData);
|
|
}
|
|
|
|
void
|
|
clipboard_clear_cb(GtkClipboard *aGtkClipboard,
|
|
gpointer user_data)
|
|
{
|
|
nsClipboard *aClipboard = static_cast<nsClipboard *>(user_data);
|
|
aClipboard->SelectionClearEvent(aGtkClipboard);
|
|
}
|
|
|
|
/*
|
|
* when copy-paste, mozilla wants data encoded using UCS2,
|
|
* other app such as StarOffice use "text/html"(RFC2854).
|
|
* This function convert data(got from GTK clipboard)
|
|
* to data mozilla wanted.
|
|
*
|
|
* data from GTK clipboard can be 3 forms:
|
|
* 1. From current mozilla
|
|
* "text/html", charset = utf-16
|
|
* 2. From old version mozilla or mozilla-based app
|
|
* content("body" only), charset = utf-16
|
|
* 3. From other app who use "text/html" when copy-paste
|
|
* "text/html", has "charset" info
|
|
*
|
|
* data : got from GTK clipboard
|
|
* dataLength: got from GTK clipboard
|
|
* body : pass to Mozilla
|
|
* bodyLength: pass to Mozilla
|
|
*/
|
|
void ConvertHTMLtoUCS2(const char* data, int32_t dataLength,
|
|
char16_t** unicodeData, int32_t& outUnicodeLen)
|
|
{
|
|
nsAutoCString charset;
|
|
GetHTMLCharset(data, dataLength, charset);// get charset of HTML
|
|
if (charset.EqualsLiteral("UTF-16")) {//current mozilla
|
|
outUnicodeLen = (dataLength / 2) - 1;
|
|
*unicodeData =
|
|
reinterpret_cast<char16_t*>
|
|
(moz_xmalloc((outUnicodeLen + sizeof('\0')) * sizeof(char16_t)));
|
|
if (*unicodeData) {
|
|
memcpy(*unicodeData, data + sizeof(char16_t),
|
|
outUnicodeLen * sizeof(char16_t));
|
|
(*unicodeData)[outUnicodeLen] = '\0';
|
|
}
|
|
} else if (charset.EqualsLiteral("UNKNOWN")) {
|
|
outUnicodeLen = 0;
|
|
return;
|
|
} else {
|
|
// app which use "text/html" to copy&paste
|
|
// get the decoder
|
|
auto encoding = Encoding::ForLabelNoReplacement(charset);
|
|
if (!encoding) {
|
|
#ifdef DEBUG_CLIPBOARD
|
|
g_print(" get unicode decoder error\n");
|
|
#endif
|
|
outUnicodeLen = 0;
|
|
return;
|
|
}
|
|
auto decoder = encoding->NewDecoder();
|
|
CheckedInt<size_t> needed = decoder->MaxUTF16BufferLength(dataLength);
|
|
if (!needed.isValid() || needed.value() > INT32_MAX) {
|
|
outUnicodeLen = 0;
|
|
return;
|
|
}
|
|
|
|
outUnicodeLen = 0;
|
|
if (needed.value()) {
|
|
*unicodeData = reinterpret_cast<char16_t*>(
|
|
moz_xmalloc((needed.value() + 1) * sizeof(char16_t)));
|
|
if (*unicodeData) {
|
|
uint32_t result;
|
|
size_t read;
|
|
size_t written;
|
|
bool hadErrors;
|
|
Tie(result, read, written, hadErrors) =
|
|
decoder->DecodeToUTF16(AsBytes(MakeSpan(data, dataLength)),
|
|
MakeSpan(*unicodeData, needed.value()),
|
|
true);
|
|
MOZ_ASSERT(result == kInputEmpty);
|
|
MOZ_ASSERT(read == size_t(dataLength));
|
|
MOZ_ASSERT(written <= needed.value());
|
|
Unused << hadErrors;
|
|
#ifdef DEBUG_CLIPBOARD
|
|
if (read != dataLength)
|
|
printf("didn't consume all the bytes\n");
|
|
#endif
|
|
outUnicodeLen = written;
|
|
// null terminate.
|
|
(*unicodeData)[outUnicodeLen] = '\0';
|
|
}
|
|
} // if valid length
|
|
}
|
|
}
|
|
|
|
/*
|
|
* get "charset" information from clipboard data
|
|
* return value can be:
|
|
* 1. "UTF-16": mozilla or "text/html" with "charset=utf-16"
|
|
* 2. "UNKNOWN": mozilla can't detect what encode it use
|
|
* 3. other: "text/html" with other charset than utf-16
|
|
*/
|
|
void GetHTMLCharset(const char* data, int32_t dataLength, nsCString& str)
|
|
{
|
|
// if detect "FFFE" or "FEFF", assume UTF-16
|
|
char16_t* beginChar = (char16_t*)data;
|
|
if ((beginChar[0] == 0xFFFE) || (beginChar[0] == 0xFEFF)) {
|
|
str.AssignLiteral("UTF-16");
|
|
return;
|
|
}
|
|
// no "FFFE" and "FEFF", assume ASCII first to find "charset" info
|
|
const nsDependentCString htmlStr(data, dataLength);
|
|
nsACString::const_iterator start, end;
|
|
htmlStr.BeginReading(start);
|
|
htmlStr.EndReading(end);
|
|
nsACString::const_iterator valueStart(start), valueEnd(start);
|
|
|
|
if (CaseInsensitiveFindInReadable(
|
|
NS_LITERAL_CSTRING("CONTENT=\"text/html;"),
|
|
start, end)) {
|
|
start = end;
|
|
htmlStr.EndReading(end);
|
|
|
|
if (CaseInsensitiveFindInReadable(
|
|
NS_LITERAL_CSTRING("charset="),
|
|
start, end)) {
|
|
valueStart = end;
|
|
start = end;
|
|
htmlStr.EndReading(end);
|
|
|
|
if (FindCharInReadable('"', start, end))
|
|
valueEnd = start;
|
|
}
|
|
}
|
|
// find "charset" in HTML
|
|
if (valueStart != valueEnd) {
|
|
str = Substring(valueStart, valueEnd);
|
|
ToUpperCase(str);
|
|
#ifdef DEBUG_CLIPBOARD
|
|
printf("Charset of HTML = %s\n", charsetUpperStr.get());
|
|
#endif
|
|
return;
|
|
}
|
|
str.AssignLiteral("UNKNOWN");
|
|
}
|