2001-09-28 20:14:13 +00:00
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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2012-05-21 11:12:37 +00:00
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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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2000-10-07 06:58:49 +00:00
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2007-08-07 15:18:36 +00:00
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#include "nsHTMLFormatConverter.h"
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2016-10-16 19:43:56 +00:00
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#include "nsArray.h"
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2002-05-15 18:55:21 +00:00
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#include "nsCRT.h"
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2001-09-06 21:13:11 +00:00
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#include "nsIComponentManager.h"
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2000-10-07 06:58:49 +00:00
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#include "nsCOMPtr.h"
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2002-09-03 23:36:13 +00:00
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#include "nsXPCOM.h"
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2000-10-07 06:58:49 +00:00
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#include "nsISupportsPrimitives.h"
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#include "nsITransferable.h" // for mime defs, this is BAD
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// HTML convertor stuff
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#include "nsPrimitiveHelpers.h"
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#include "nsIDocumentEncoder.h"
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2012-02-27 11:57:48 +00:00
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#include "nsContentUtils.h"
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2000-10-07 06:58:49 +00:00
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nsHTMLFormatConverter::nsHTMLFormatConverter() {}
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nsHTMLFormatConverter::~nsHTMLFormatConverter() {}
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2014-04-27 07:06:00 +00:00
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NS_IMPL_ISUPPORTS(nsHTMLFormatConverter, nsIFormatConverter)
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2000-10-07 06:58:49 +00:00
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//
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// GetInputDataFlavors
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//
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// Creates a new list and returns the list of all the flavors this converter
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// knows how to import. In this case, it's just HTML.
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//
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NS_IMETHODIMP
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2019-05-01 08:47:10 +00:00
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nsHTMLFormatConverter::GetInputDataFlavors(nsTArray<nsCString>& aFlavors) {
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2018-10-10 20:26:06 +00:00
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aFlavors.AppendElement(NS_LITERAL_CSTRING(kHTMLMime));
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return NS_OK;
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}
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2000-10-07 06:58:49 +00:00
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//
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// GetOutputDataFlavors
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//
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// Creates a new list and returns the list of all the flavors this converter
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// knows how to export (convert). In this case, it's all sorts of things that
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// HTML can be converted to.
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//
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NS_IMETHODIMP
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2019-05-01 08:47:10 +00:00
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nsHTMLFormatConverter::GetOutputDataFlavors(nsTArray<nsCString>& aFlavors) {
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2018-10-10 20:26:06 +00:00
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aFlavors.AppendElement(NS_LITERAL_CSTRING(kHTMLMime));
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aFlavors.AppendElement(NS_LITERAL_CSTRING(kUnicodeMime));
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return NS_OK;
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}
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2000-10-07 06:58:49 +00:00
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//
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// CanConvert
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//
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// Determines if we support the given conversion. Currently, this method only
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// converts from HTML to others.
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//
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NS_IMETHODIMP
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2019-05-01 08:47:10 +00:00
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nsHTMLFormatConverter::CanConvert(const char* aFromDataFlavor,
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const char* aToDataFlavor, bool* _retval) {
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2000-10-07 06:58:49 +00:00
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if (!_retval) return NS_ERROR_INVALID_ARG;
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2011-10-17 14:59:28 +00:00
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*_retval = false;
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2000-10-07 06:58:49 +00:00
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if (!nsCRT::strcmp(aFromDataFlavor, kHTMLMime)) {
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if (!nsCRT::strcmp(aToDataFlavor, kHTMLMime))
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2011-10-17 14:59:28 +00:00
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*_retval = true;
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2000-10-07 06:58:49 +00:00
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else if (!nsCRT::strcmp(aToDataFlavor, kUnicodeMime))
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2011-10-17 14:59:28 +00:00
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*_retval = true;
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2000-10-07 06:58:49 +00:00
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#if NOT_NOW
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// pinkerton
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// no one uses this flavor right now, so it's just slowing things down. If
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// anyone cares I can put it back in.
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else if (toFlavor.Equals(kAOLMailMime))
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2011-10-17 14:59:28 +00:00
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*_retval = true;
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2000-10-07 06:58:49 +00:00
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#endif
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}
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return NS_OK;
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} // CanConvert
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//
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// Convert
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//
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// Convert data from one flavor to another. The data is wrapped in primitive
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2005-11-21 06:30:34 +00:00
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// objects so that it is accessible from JS. Currently, this only accepts HTML
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// input, so anything else is invalid.
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2000-10-07 06:58:49 +00:00
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//
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// XXX This method copies the data WAAAAY too many time for my liking. Grrrrrr.
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// Mostly it's because
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// XXX we _must_ put things into nsStrings so that the parser will accept it.
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// Lame lame lame lame. We
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// XXX also can't just get raw unicode out of the nsString, so we have to
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// allocate heap to get
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// XXX unicode out of the string. Lame lame lame.
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//
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NS_IMETHODIMP
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2019-05-01 08:47:10 +00:00
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nsHTMLFormatConverter::Convert(const char* aFromDataFlavor,
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nsISupports* aFromData,
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const char* aToDataFlavor,
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nsISupports** aToData) {
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2000-10-07 06:58:49 +00:00
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if (!aToData) return NS_ERROR_INVALID_ARG;
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nsresult rv = NS_OK;
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2012-07-30 14:20:58 +00:00
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*aToData = nullptr;
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2000-10-07 06:58:49 +00:00
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if (!nsCRT::strcmp(aFromDataFlavor, kHTMLMime)) {
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2012-09-02 02:35:17 +00:00
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nsAutoCString toFlavor(aToDataFlavor);
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2000-10-07 06:58:49 +00:00
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// HTML on clipboard is going to always be double byte so it will be in a
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2016-11-02 11:46:53 +00:00
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// primitive class of nsISupportsString. Also, since the data is in two byte
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2000-10-07 06:58:49 +00:00
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// chunks the length represents the length in 1-byte chars, so we need to
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// divide by two.
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2002-08-06 00:53:19 +00:00
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nsCOMPtr<nsISupportsString> dataWrapper0(do_QueryInterface(aFromData));
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2005-09-10 11:39:32 +00:00
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if (!dataWrapper0) {
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return NS_ERROR_INVALID_ARG;
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}
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2000-10-07 06:58:49 +00:00
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2005-09-10 11:39:32 +00:00
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nsAutoString dataStr;
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2016-11-02 11:46:53 +00:00
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dataWrapper0->GetData(dataStr); // COPY #1
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// note: conversion to text/plain is done inside the clipboard. we do not
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2005-09-10 11:39:32 +00:00
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// need to worry about it here.
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if (toFlavor.Equals(kHTMLMime) || toFlavor.Equals(kUnicodeMime)) {
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nsresult res;
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if (toFlavor.Equals(kHTMLMime)) {
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2012-08-22 15:56:38 +00:00
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int32_t dataLen = dataStr.Length() * 2;
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2017-08-21 10:01:27 +00:00
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nsPrimitiveHelpers::CreatePrimitiveForData(toFlavor, dataStr.get(),
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dataLen, aToData);
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2005-09-10 11:39:32 +00:00
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} else {
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nsAutoString outStr;
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res = ConvertFromHTMLToUnicode(dataStr, outStr);
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if (NS_SUCCEEDED(res)) {
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2012-08-22 15:56:38 +00:00
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int32_t dataLen = outStr.Length() * 2;
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2017-08-21 10:01:27 +00:00
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nsPrimitiveHelpers::CreatePrimitiveForData(toFlavor, outStr.get(),
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dataLen, aToData);
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2000-10-07 06:58:49 +00:00
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}
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}
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2005-09-10 11:39:32 +00:00
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} // else if HTML or Unicode
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else if (toFlavor.Equals(kAOLMailMime)) {
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nsAutoString outStr;
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if (NS_SUCCEEDED(ConvertFromHTMLToAOLMail(dataStr, outStr))) {
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2012-08-22 15:56:38 +00:00
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int32_t dataLen = outStr.Length() * 2;
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2017-08-21 10:01:27 +00:00
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nsPrimitiveHelpers::CreatePrimitiveForData(toFlavor, outStr.get(),
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dataLen, aToData);
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2005-09-10 11:39:32 +00:00
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}
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} // else if AOL mail
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else {
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rv = NS_ERROR_FAILURE;
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2000-10-07 06:58:49 +00:00
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}
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} // if we got html mime
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else
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2016-11-02 11:46:53 +00:00
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rv = NS_ERROR_FAILURE;
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2000-10-07 06:58:49 +00:00
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return rv;
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2016-11-02 11:46:53 +00:00
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2000-10-07 06:58:49 +00:00
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} // Convert
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//
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// ConvertFromHTMLToUnicode
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//
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// Takes HTML and converts it to plain text but in unicode.
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//
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NS_IMETHODIMP
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2019-05-01 08:47:10 +00:00
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nsHTMLFormatConverter::ConvertFromHTMLToUnicode(const nsAutoString& aFromStr,
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nsAutoString& aToStr) {
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2012-02-27 11:57:48 +00:00
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return nsContentUtils::ConvertToPlainText(
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aFromStr, aToStr,
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2011-08-09 15:14:37 +00:00
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nsIDocumentEncoder::OutputSelectionOnly |
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nsIDocumentEncoder::OutputAbsoluteLinks |
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nsIDocumentEncoder::OutputNoScriptContent |
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2012-02-27 11:57:48 +00:00
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nsIDocumentEncoder::OutputNoFramesContent,
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0);
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2000-10-07 06:58:49 +00:00
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} // ConvertFromHTMLToUnicode
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NS_IMETHODIMP
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2019-05-01 08:47:10 +00:00
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nsHTMLFormatConverter::ConvertFromHTMLToAOLMail(const nsAutoString& aFromStr,
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nsAutoString& aToStr) {
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2004-06-17 00:13:25 +00:00
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aToStr.AssignLiteral("<HTML>");
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2000-10-07 06:58:49 +00:00
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aToStr.Append(aFromStr);
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2004-06-17 00:13:25 +00:00
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aToStr.AppendLiteral("</HTML>");
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2000-10-07 06:58:49 +00:00
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return NS_OK;
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}
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