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| 1 /* | |
| 2 * Copyright (C) 2013, Google Inc. All rights reserved. | |
| 3 * | |
| 4 * Redistribution and use in source and binary forms, with or without | |
| 5 * modification, are permitted provided that the following conditions | |
| 6 * are met: | |
| 7 * 1. Redistributions of source code must retain the above copyright | |
| 8 * notice, this list of conditions and the following disclaimer. | |
| 9 * 2. Redistributions in binary form must reproduce the above copyright | |
| 10 * notice, this list of conditions and the following disclaimer in the | |
| 11 * documentation and/or other materials provided with the distribution. | |
| 12 * | |
| 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND | |
| 14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 16 * ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE | |
| 17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | |
| 19 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER | |
| 20 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH | |
| 23 * DAMAGE. | |
| 24 */ | |
| 25 | |
| 26 #include "wtf/text/TextPosition.h" | |
| 27 | |
| 28 #include "wtf/PtrUtil.h" | |
| 29 #include "wtf/StdLibExtras.h" | |
| 30 #include <algorithm> | |
| 31 #include <memory> | |
| 32 | |
| 33 namespace WTF { | |
| 34 | |
| 35 std::unique_ptr<Vector<unsigned>> lineEndings(const String& text) { | |
| 36 std::unique_ptr<Vector<unsigned>> result(WTF::makeUnique<Vector<unsigned>>()); | |
| 37 | |
| 38 unsigned start = 0; | |
| 39 while (start < text.length()) { | |
| 40 size_t lineEnd = text.find('\n', start); | |
| 41 if (lineEnd == kNotFound) | |
| 42 break; | |
| 43 | |
| 44 result->push_back(static_cast<unsigned>(lineEnd)); | |
| 45 start = lineEnd + 1; | |
| 46 } | |
| 47 result->push_back(text.length()); | |
| 48 | |
| 49 return result; | |
| 50 } | |
| 51 | |
| 52 OrdinalNumber TextPosition::toOffset(const Vector<unsigned>& lineEndings) { | |
| 53 unsigned lineStartOffset = m_line != OrdinalNumber::first() | |
| 54 ? lineEndings.at(m_line.zeroBasedInt() - 1) + 1 | |
| 55 : 0; | |
| 56 return OrdinalNumber::fromZeroBasedInt(lineStartOffset + | |
| 57 m_column.zeroBasedInt()); | |
| 58 } | |
| 59 | |
| 60 TextPosition TextPosition::fromOffsetAndLineEndings( | |
| 61 unsigned offset, | |
| 62 const Vector<unsigned>& lineEndings) { | |
| 63 const unsigned* foundLineEnding = | |
| 64 std::lower_bound(lineEndings.begin(), lineEndings.end(), offset); | |
| 65 int lineIndex = foundLineEnding - &lineEndings.at(0); | |
| 66 unsigned lineStartOffset = | |
| 67 lineIndex > 0 ? lineEndings.at(lineIndex - 1) + 1 : 0; | |
| 68 int column = offset - lineStartOffset; | |
| 69 return TextPosition(OrdinalNumber::fromZeroBasedInt(lineIndex), | |
| 70 OrdinalNumber::fromZeroBasedInt(column)); | |
| 71 } | |
| 72 | |
| 73 } // namespace WTF | |
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Chromium Code Reviews
Issue 2764283002:
Move files in wtf/ to platform/wtf/ (Part 10). (Closed)
