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diff --git a/Build/source/texk/dvisvgm/dvisvgm-1.2.2/src/StreamReader.cpp b/Build/source/texk/dvisvgm/dvisvgm-1.2.2/src/StreamReader.cpp
new file mode 100644
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+++ b/Build/source/texk/dvisvgm/dvisvgm-1.2.2/src/StreamReader.cpp
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+/*************************************************************************
+** StreamReader.cpp **
+** **
+** This file is part of dvisvgm -- the DVI to SVG converter **
+** Copyright (C) 2005-2013 Martin Gieseking <martin.gieseking@uos.de> **
+** **
+** 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, see <http://www.gnu.org/licenses/>. **
+*************************************************************************/
+
+#include "CRC32.h"
+#include "StreamReader.h"
+#include "macros.h"
+
+using namespace std;
+
+StreamReader::StreamReader (istream &s)
+ : _is(&s)
+{
+}
+
+
+istream& StreamReader::replaceStream (istream &in) {
+ istream &ret = *_is;
+ _is = &in;
+ return ret;
+}
+
+
+/** Reads an unsigned integer from assigned input stream.
+ * @param[in] bytes number of bytes to read (max. 4)
+ * @return read integer */
+UInt32 StreamReader::readUnsigned (int bytes) {
+ UInt32 ret = 0;
+ for (bytes--; bytes >= 0 && !_is->eof(); bytes--) {
+ UInt32 b = _is->get();
+ ret |= b << (8*bytes);
+ }
+ return ret;
+}
+
+
+/** Reads an unsigned integer from assigned input stream and updates the CRC32 checksum.
+ * @param[in] bytes number of bytes to read (max. 4)
+ * @param[in,out] crc32 checksum to be updated
+ * @return read integer */
+UInt32 StreamReader::readUnsigned (int bytes, CRC32 &crc32) {
+ UInt32 ret = readUnsigned(bytes);
+ crc32.update(ret, bytes);
+ return ret;
+}
+
+
+/** Reads an signed integer from assigned input stream.
+ * @param[in] bytes number of bytes to read (max. 4)
+ * @return read integer */
+Int32 StreamReader::readSigned (int bytes) {
+ Int32 ret = _is->get();
+ if (ret & 128) // negative value?
+ ret |= 0xffffff00;
+ for (bytes-=2; bytes >= 0 && !_is->eof(); bytes--)
+ ret = (ret << 8) | _is->get();
+ return ret;
+}
+
+
+/** Reads an signed integer from assigned input stream and updates the CRC32 checksum.
+ * @param[in] bytes number of bytes to read (max. 4)
+ * @param[in,out] crc32 checksum to be updated
+ * @return read integer */
+Int32 StreamReader::readSigned (int bytes, CRC32 &crc32) {
+ Int32 ret = readSigned(bytes);
+ crc32.update(ret, bytes);
+ return ret;
+}
+
+
+/** Reads a string terminated by a 0-byte. */
+string StreamReader::readString () {
+ if (!_is)
+ throw StreamReaderException("no stream assigned");
+ string ret;
+ while (!_is->eof() && _is->peek() > 0)
+ ret += _is->get();
+ _is->get(); // skip 0-byte
+ return ret;
+}
+
+
+/** Reads a string terminated by a 0-byte and updates the CRC32 checksum.
+ * @param[in,out] crc32 checksum to be updated
+ * @param[in] finalZero consider final 0-byte in checksum
+ * @return the string read */
+string StreamReader::readString (CRC32 &crc32, bool finalZero) {
+ string ret = readString();
+ crc32.update((const UInt8*)ret.c_str(), ret.length());
+ if (finalZero)
+ crc32.update(0, 1);
+ return ret;
+}
+
+
+/** Reads a string of a given length.
+ * @param[in] length number of characters to read
+ * @return the string read */
+string StreamReader::readString (int length) {
+ if (!_is)
+ throw StreamReaderException("no stream assigned");
+ char *buf = new char[length+1];
+ if (length <= 0)
+ *buf = 0;
+ else {
+ _is->read(buf, length); // reads 'length' bytes
+ buf[length] = 0;
+ }
+ string ret = buf;
+ delete [] buf;
+ return ret;
+}
+
+
+/** Reads a string of a given length and updates the CRC32 checksum.
+ * @param[in] length number of characters to read
+ * @param[in,out] crc32 checksum to be updated
+ * @return the string read */
+string StreamReader::readString (int length, CRC32 &crc32) {
+ string ret = readString(length);
+ crc32.update(ret.c_str());
+ return ret;
+}
+
+
+vector<UInt8>& StreamReader::readBytes (int n, vector<UInt8> &bytes) {
+ if (n > 0)
+ in().read((char*)&bytes[0], n);
+ return bytes;
+}
+
+
+vector<UInt8>& StreamReader::readBytes (int n, vector<UInt8> &bytes, CRC32 &crc32) {
+ readBytes(n, bytes);
+ crc32.update(&bytes[0], bytes.size());
+ return bytes;
+}
+
+
+int StreamReader::readByte (CRC32 &crc32) {
+ int ret = readByte();
+ if (ret >= 0) {
+ const UInt8 c = UInt8(ret & 0xff);
+ crc32.update(&c, 1);
+ }
+ return ret;
+}