95 lines
3.6 KiB
C++
95 lines
3.6 KiB
C++
/*
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* Copyright (C) 2004, 2008 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include "HTMLInterchange.h"
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#include "Editing.h"
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#include "RenderText.h"
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#include "Text.h"
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#include <wtf/text/StringBuilder.h>
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#include <wtf/unicode/CharacterNames.h>
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namespace WebCore {
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String convertHTMLTextToInterchangeFormat(const String& in, const Text* node)
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{
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// Assume all the text comes from node.
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if (node->renderer() && node->renderer()->style().preserveNewline())
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return in;
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const char convertedSpaceString[] = "<span class=\"" AppleConvertedSpace "\">\xA0</span>";
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COMPILE_ASSERT((static_cast<unsigned char>('\xA0') == noBreakSpace), ConvertedSpaceStringSpaceIsNoBreakSpace);
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StringBuilder s;
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unsigned i = 0;
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unsigned consumed = 0;
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while (i < in.length()) {
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consumed = 1;
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if (deprecatedIsCollapsibleWhitespace(in[i])) {
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// count number of adjoining spaces
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unsigned j = i + 1;
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while (j < in.length() && deprecatedIsCollapsibleWhitespace(in[j]))
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j++;
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unsigned count = j - i;
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consumed = count;
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while (count) {
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unsigned add = count % 3;
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switch (add) {
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case 0:
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s.append(convertedSpaceString, ' ', convertedSpaceString);
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add = 3;
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break;
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case 1:
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if (i == 0 || i + 1 == in.length()) // at start or end of string
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s.append(convertedSpaceString);
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else
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s.append(' ');
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break;
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case 2:
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if (i == 0) {
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// at start of string
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s.append(convertedSpaceString, ' ');
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} else if (i + 2 == in.length()) {
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// at end of string
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s.append(convertedSpaceString, convertedSpaceString);
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} else {
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s.append(convertedSpaceString, ' ');
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}
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break;
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}
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count -= add;
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}
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} else
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s.append(in[i]);
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i += consumed;
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}
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return s.toString();
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}
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} // namespace WebCore
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