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| author | Michele Calgaro <michele.calgaro@yahoo.it> | 2024-05-11 21:28:48 +0900 |
|---|---|---|
| committer | Michele Calgaro <michele.calgaro@yahoo.it> | 2024-05-11 21:28:48 +0900 |
| commit | 2462d03f322261bd616721c2b2065c4004b36c9c (patch) | |
| tree | 239947a0737bb8386703a1497f12c09aebd3080a /fbreader/src/formats/util/TextFormatDetector.cpp | |
| download | tde-ebook-reader-2462d03f322261bd616721c2b2065c4004b36c9c.tar.gz tde-ebook-reader-2462d03f322261bd616721c2b2065c4004b36c9c.zip | |
Initial import (as is) from Debian Snapshot's 'fbreader' source code (https://snapshot.debian.org/package/fbreader/0.99.4%2Bdfsg-6).
The Debian code is provided under GPL2 license.
Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>
Diffstat (limited to 'fbreader/src/formats/util/TextFormatDetector.cpp')
| -rw-r--r-- | fbreader/src/formats/util/TextFormatDetector.cpp | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/fbreader/src/formats/util/TextFormatDetector.cpp b/fbreader/src/formats/util/TextFormatDetector.cpp new file mode 100644 index 0000000..4a3ef67 --- /dev/null +++ b/fbreader/src/formats/util/TextFormatDetector.cpp @@ -0,0 +1,77 @@ +/* + * Copyright (C) 2004-2012 Geometer Plus <contact@geometerplus.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA + * 02110-1301, USA. + */ + +#include <cstring> +#include <cctype> +#include <algorithm> + +#include <ZLInputStream.h> +#include <ZLUnicodeUtil.h> + +#include "TextFormatDetector.h" + +TextFormatDetector::TextFormatDetector() { +} + +TextFormatDetector::~TextFormatDetector() { +} + +bool TextFormatDetector::isHtml(ZLInputStream &stream) const { + if (!stream.open()) { + return false; + } + + const std::size_t bufferSize = 1024; + char *buffer = new char[bufferSize]; + std::string sixBytes; + int valuableBytesCounter = 0; + bool skipFlag = true; + while (valuableBytesCounter < 6) { + std::size_t size = stream.read(buffer, bufferSize); + if (size == 0) { + break; + } + std::size_t index; + for (index = 0; skipFlag && (index < size); ++index) { + if (!std::isspace((unsigned char)buffer[index])) { + skipFlag = false; + break; + } + } + if (!skipFlag && index < size) { + int bytes = std::min(6 - valuableBytesCounter, (int)(size - index)); + sixBytes = std::string(buffer + index, bytes); + valuableBytesCounter += bytes; + } + } + stream.close(); + delete[] buffer; + return ZLUnicodeUtil::toLower(sixBytes) == "<html>"; +} + +bool TextFormatDetector::isPPL(ZLInputStream &stream) const { + if (!stream.open()) { + return false; + } + + char buffer[5]; + bool result = stream.read(buffer, 5) == 5 && std::strncmp(buffer, "PPL\r\n", 5) == 0; + stream.close(); + return result; +} |