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// $Id$
//
// Copyright (c) 2003-2008 greg Landrum and Rational Discovery LLC
//
// @@ All Rights Reserved @@
// This file is part of the RDKit.
// The contents are covered by the terms of the BSD license
// which is included in the file license.txt, found at the root
// of the RDKit source tree.
//
#include "BitVect.h"
#include <sstream>
#include <limits>
#include <RDGeneral/StreamOps.h>
#include "base64.h"
#ifdef WIN32
#include <ios>
#endif
#include <cstdint>
BitVect::~BitVect() {}; // must always implement virtual destructors
void BitVect::initFromText(const char *data, const unsigned int dataLen,
bool isBase64, bool allowOldFormat) {
std::stringstream ss(std::ios_base::binary | std::ios_base::in |
std::ios_base::out);
if (isBase64) {
unsigned int actualLen;
char *decoded;
decoded = Base64Decode((const char *)data, &actualLen);
ss.write(decoded, actualLen);
delete[] decoded;
} else {
ss.write(data, dataLen);
}
std::int32_t format = 0;
std::int32_t version = 0;
std::uint32_t nOn = 0;
std::int32_t size;
// earlier versions of the code did not have the version number encoded, so
// we'll use that to distinguish version 0
RDKit::streamRead(ss, size);
if (size < 0) {
version = -1 * size;
switch (version) {
case 16:
format = 1;
break;
case 32:
format = 2;
break;
default:
throw ValueErrorException("bad version in BitVect pickle");
break;
}
RDKit::streamRead(ss, size);
} else if (!allowOldFormat) {
throw ValueErrorException("invalid BitVect pickle");
}
RDKit::streamRead(ss, nOn);
_initForSize(static_cast<int>(size));
// if the either have older version or or version 16 with ints for on bits
if ((format == 0) ||
((format == 1) && (size >= std::numeric_limits<unsigned short>::max()))) {
std::uint32_t tmp;
for (unsigned int i = 0; i < nOn; i++) {
RDKit::streamRead(ss, tmp);
setBit(tmp);
}
} else if (format == 1) { // version 16 and on bits stored as short ints
std::uint16_t tmp;
for (unsigned int i = 0; i < nOn; i++) {
RDKit::streamRead(ss, tmp);
setBit(tmp);
}
} else if (format == 2) { // run length encoded format
std::uint32_t curr = 0;
for (unsigned int i = 0; i < nOn; i++) {
curr += RDKit::readPackedIntFromStream(ss);
setBit(curr);
curr++;
}
}
}
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