1 files changed, 358 insertions, 0 deletions
diff --git a/vmime-master/src/vmime/utility/encoder/uuEncoder.cpp b/vmime-master/src/vmime/utility/encoder/uuEncoder.cpp
new file mode 100644
index 0000000..24dcdc8
--- /dev/null
+++ b/vmime-master/src/vmime/utility/encoder/uuEncoder.cpp
@@ -0,0 +1,358 @@
+//
+// VMime library (http://www.vmime.org)
+// Copyright (C) 2002 Vincent Richard <vincent@vmime.org>
+//
+// 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 3 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.
+//
+// Linking this library statically or dynamically with other modules is making
+// a combined work based on this library.  Thus, the terms and conditions of
+// the GNU General Public License cover the whole combination.
+//
+
+#include "vmime/utility/encoder/uuEncoder.hpp"
+#include "vmime/parserHelpers.hpp"
+
+
+namespace vmime {
+namespace utility {
+namespace encoder {
+
+
+uuEncoder::uuEncoder() {
+
+	getProperties()["mode"] = 644;
+	getProperties()["filename"] = "no_name";
+	getProperties()["maxlinelength"] = 46;
+}
+
+
+const std::vector <string> uuEncoder::getAvailableProperties() const {
+
+	std::vector <string> list(encoder::getAvailableProperties());
+
+	list.push_back("maxlinelength");
+
+	list.push_back("mode");
+	list.push_back("filename");
+
+	return list;
+}
+
+
+// This is the character encoding function to make a character printable
+static inline byte_t UUENCODE(const unsigned int c) {
+
+	return static_cast <byte_t>((c & 077) + ' ');
+}
+
+// Single character decoding
+static inline unsigned int UUDECODE(const unsigned int c) {
+
+	return (c - ' ') & 077;
+}
+
+
+size_t uuEncoder::encode(
+	utility::inputStream& in,
+	utility::outputStream& out,
+	utility::progressListener* progress
+) {
+
+	in.reset();  // may not work...
+
+	const string propFilename = getProperties().getProperty <string>("filename", "");
+	const string propMode = getProperties().getProperty <string>("mode", "644");
+
+	const size_t maxLineLength =
+		std::min(getProperties().getProperty <size_t>("maxlinelength", 46), static_cast <size_t>(46));
+
+	size_t total = 0;
+	size_t inTotal = 0;
+
+	// Output the prelude text ("begin [mode] [filename]")
+	out << "begin";
+
+	if (!propFilename.empty()) {
+		out << " " << propMode << " " << propFilename;
+		total += 2 + propMode.length() + propFilename.length();
+	}
+
+	out << "\r\n";
+	total += 7;
+
+	// Process the data
+	byte_t inBuffer[64];
+	byte_t outBuffer[64];
+
+	if (progress) {
+		progress->start(0);
+	}
+
+	while (!in.eof()) {
+
+		// Process up to 45 characters per line
+		std::fill(inBuffer, inBuffer + sizeof(inBuffer), 0);
+
+		const size_t inLength = in.read(inBuffer, maxLineLength - 1);
+
+		outBuffer[0] = UUENCODE(static_cast <unsigned int>(inLength)); // Line length
+
+		size_t j = 1;
+
+		for (size_t i = 0 ; i < inLength ; i += 3, j += 4) {
+
+			const byte_t c1 = inBuffer[i];
+			const byte_t c2 = inBuffer[i + 1];
+			const byte_t c3 = inBuffer[i + 2];
+
+			outBuffer[j]     = UUENCODE(c1 >> 2);
+			outBuffer[j + 1] = UUENCODE(((c1 << 4) & 060) | ((c2 >> 4) & 017));
+			outBuffer[j + 2] = UUENCODE(((c2 << 2) & 074) | ((c3 >> 6) & 03));
+			outBuffer[j + 3] = UUENCODE(c3 & 077);
+		}
+
+		outBuffer[j] = '\r';
+		outBuffer[j + 1] = '\n';
+
+		out.write(outBuffer, j + 2);
+
+		total += j + 2;
+		inTotal += inLength;
+
+		if (progress) {
+			progress->progress(inTotal, inTotal);
+		}
+	}
+
+	out << "end\r\n";
+	total += 5;
+
+	if (progress) {
+		progress->stop(inTotal);
+	}
+
+	return total;
+}
+
+
+size_t uuEncoder::decode(
+	utility::inputStream& in,
+	utility::outputStream& out,
+	utility::progressListener* progress
+) {
+
+	in.reset();  // may not work...
+
+	// Process the data
+	byte_t inBuffer[64];
+	byte_t outBuffer[64];
+
+	size_t total = 0;
+	size_t inTotal = 0;
+
+	bool stop = false;
+
+	std::fill(inBuffer, inBuffer + sizeof(inBuffer), 0);
+
+	if (progress) {
+		progress->start(0);
+	}
+
+	while (!stop && !in.eof()) {
+
+		// Get the line length
+		byte_t lengthChar;
+
+		if (in.read(&lengthChar, 1) == 0) {
+			break;
+		}
+
+		const size_t outLength = UUDECODE(lengthChar);
+		const size_t inLength = std::min((outLength * 4) / 3, static_cast <size_t>(64));
+		size_t inPos = 0;
+
+		switch (lengthChar) {
+
+			case ' ':
+			case '\t':
+			case '\r':
+			case '\n': {
+
+				// Ignore
+				continue;
+			}
+			case 'b': {
+
+				// Read 5 characters more to check for begin ("begin ...\r\n" or "begin ...\n")
+				inPos = in.read(inBuffer, 5);
+
+				if (inPos == 5 &&
+				    inBuffer[0] == 'e' &&
+				    inBuffer[1] == 'g' &&
+				    inBuffer[2] == 'i' &&
+				    inBuffer[3] == 'n' &&
+				    parserHelpers::isSpace(inBuffer[4])) {
+
+					inTotal += 5;
+
+					byte_t c = 0;
+
+					size_t count = 0;
+					byte_t buffer[512];
+
+					while (count < sizeof(buffer) - 1 && in.read(&c, 1) == 1) {
+
+						if (c == '\n') {
+							break;
+						}
+
+						buffer[count++] = c;
+					}
+
+					inTotal += count;
+
+					if (c != '\n') {
+
+						// OOPS! Weird line. Don't try to decode more...
+
+						if (progress) {
+							progress->stop(inTotal);
+						}
+
+						return total;
+					}
+
+					// Parse filename and mode
+					if (count > 0) {
+
+						buffer[count] = '\0';
+
+						byte_t* p = buffer;
+
+						while (*p && parserHelpers::isSpace(*p)) ++p;
+
+						byte_t* modeStart = buffer;
+
+						while (*p && !parserHelpers::isSpace(*p)) ++p;
+
+						getResults()["mode"] = string(modeStart, p);
+
+						while (*p && parserHelpers::isSpace(*p)) ++p;
+
+						byte_t* filenameStart = buffer;
+
+						while (*p && !(*p == '\r' || *p == '\n')) ++p;
+
+						getResults()["filename"] = string(filenameStart, p);
+
+					// No filename or mode specified
+					} else {
+
+						getResults()["filename"] = "untitled";
+						getResults()["mode"] = 644;
+					}
+
+					continue;
+				}
+
+				break;
+			}
+			case 'e': {
+
+				// Read 3 characters more to check for end ("end\r\n" or "end\n")
+				inPos = in.read(inBuffer, 3);
+
+				if (inPos == 3 &&
+				    inBuffer[0] == 'n' &&
+				    inBuffer[1] == 'd' &&
+				    (inBuffer[2] == '\r' || inBuffer[2] == '\n')) {
+
+					stop = true;
+					inTotal += 3;
+					continue;
+				}
+
+				break;
+			}
+
+		}
+
+		// Read encoded data
+		if (in.read(inBuffer + inPos, inLength - inPos) != inLength - inPos) {
+			// Premature end of data
+			break;
+		}
+
+		inTotal += (inLength - inPos);
+
+		// Decode data
+		for (size_t i = 0, j = 0 ; i < inLength ; i += 4, j += 3) {
+
+			const byte_t c1 = inBuffer[i];
+			const byte_t c2 = inBuffer[i + 1];
+			const byte_t c3 = inBuffer[i + 2];
+			const byte_t c4 = inBuffer[i + 3];
+
+			const size_t n = std::min(inLength - i, static_cast <size_t>(3));
+
+			if (n >= 3) {
+				outBuffer[j + 2] = static_cast <byte_t>(UUDECODE(c3) << 6 | UUDECODE(c4));
+			}
+			if (n >= 2) {
+				outBuffer[j + 1] = static_cast <byte_t>(UUDECODE(c2) << 4 | UUDECODE(c3) >> 2);
+			}
+			if (n >= 1) {
+				outBuffer[j]     = static_cast <byte_t>(UUDECODE(c1) << 2 | UUDECODE(c2) >> 4);
+			}
+
+			total += n;
+		}
+
+		out.write(outBuffer, outLength);
+
+		std::fill(inBuffer, inBuffer + sizeof(inBuffer), 0);
+
+		if (progress) {
+			progress->progress(inTotal, inTotal);
+		}
+	}
+
+	if (progress) {
+		progress->stop(inTotal);
+	}
+
+	return total;
+}
+
+
+size_t uuEncoder::getEncodedSize(const size_t n) const {
+
+	// 3 bytes of input provide 4 bytes of output.
+	// Count CRLF (2 bytes) for each line of 45 characters.
+	// Also reserve some space for header and footer.
+	return 200 + n * 3 + (n / 45) * 2;
+}
+
+
+size_t uuEncoder::getDecodedSize(const size_t n) const {
+
+	// 4 bytes of input provide 3 bytes of output
+	return (n * 3) / 4;
+}
+
+
+} // encoder
+} // utility
+} // vmime