/* * Copyright (C) 2005-2017 Apple Inc. All rights reserved. * Copyright (C) 2010 Google Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following disclaimer * in the documentation and/or other materials provided with the * distribution. * * Neither the name of Google Inc. nor the names of its * contributors may be used to endorse or promote products derived from * this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include "config.h" #include "LineEnding.h" #include <wtf/Vector.h> namespace WTF { Vector<uint8_t> normalizeLineEndingsToLF(Vector<uint8_t>&& vector) { auto q = vector.data(); for (auto p = vector.data(), end = p + vector.size(); p != end; ) { auto character = *p++; if (character == '\r') { // Turn CRLF and CR into LF. if (p != end && *p == '\n') ++p; *q++ = '\n'; } else { // Leave other characters alone. *q++ = character; } } vector.shrink(q - vector.data()); return WTFMove(vector); } Vector<uint8_t> normalizeLineEndingsToCRLF(Vector<uint8_t>&& source) { size_t resultLength = 0; for (auto p = source.data(), end = p + source.size(); p != end; ) { auto character = *p++; if (character == '\r') { // Turn CR or CRLF into CRLF; if (p != end && *p == '\n') ++p; resultLength += 2; } else if (character == '\n') { // Turn LF into CRLF. resultLength += 2; } else { // Leave other characters alone. resultLength += 1; } } if (resultLength == source.size()) return WTFMove(source); Vector<uint8_t> result(resultLength); auto q = result.data(); for (auto p = source.data(), end = p + source.size(); p != end; ) { auto character = *p++; if (character == '\r') { // Turn CR or CRLF into CRLF; if (p != end && *p == '\n') ++p; *q++ = '\r'; *q++ = '\n'; } else if (character == '\n') { // Turn LF into CRLF. *q++ = '\r'; *q++ = '\n'; } else { // Leave other characters alone. *q++ = character; } } ASSERT(q == result.data() + resultLength); return result; } Vector<uint8_t> normalizeLineEndingsToNative(Vector<uint8_t>&& from) { #if OS(WINDOWS) return normalizeLineEndingsToCRLF(WTFMove(from)); #else return normalizeLineEndingsToLF(WTFMove(from)); #endif } } // namespace WTF