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dict-generate.cpp
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dict-generate.cpp
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/**********************************************************************************
* Program to generate the dictionary for the C implementation of the zxcvbn password estimator.
* Copyright (c) 2015-2017 Tony Evans
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
**********************************************************************************/
#include <algorithm>
#include <iostream>
#include <string>
#include <fstream>
#include <list>
#include <set>
#include <vector>
#include <map>
#include <memory>
#include <limits>
#include <stdlib.h>
#include <string.h>
#include <math.h>
using namespace std;
class Node;
typedef std::shared_ptr<Node> NodeSPtr;
typedef std::weak_ptr<Node> NodeWPtr;
typedef std::map<char, NodeSPtr> NodeMap_t;
typedef unsigned int Check_t;
/**********************************************************************************
* Class to perform CRC checksum calculation.
*/
class TrieCheck
{
public:
typedef uint64_t Check_t;
static const Check_t CHK_INIT = 0xffffffffffffffff;
TrieCheck() { Init(); }
void Init() { mCrc = CHK_INIT; }
operator Check_t() const { return Result(); }
Check_t Result() const { return mCrc; }
bool operator ! () const { return mCrc == CHK_INIT; }
void operator () (const void *, unsigned int);
protected:
Check_t mCrc;
};
/**********************************************************************************
* Class to hold a node within the trie
*/
class Node
{
public:
Node();
Node(const Node &);
~Node();
Node & operator = (const Node &);
//bool operator == (const Node & r) const { return !IsEqual(r); }
//bool operator != (const Node & r) const { return !IsEqual(r); }
void SetEnd() { mEnd = true; }
bool IsEnd() const { return mEnd; }
int Height() const { return mHeight; }
// Scan the trie and count nodes
int NodeCount() { ClearCounted() ; return CountNodes(); }
int CalcAddress() { int a=0; ClearCounted(); a=CalcAddr(a, true); return CalcAddr(a, false); }
Node *GetParent() { return mParent; }
unsigned int GetAddr() const { return mAddr; }
NodeMap_t::iterator ChildBegin() { return mChild.begin(); }
NodeMap_t::iterator ChildEnd() { return mChild.end(); }
unsigned int GetNumChild() { return mChild.size(); }
int GetNumEnds() const { return mEndings; }
NodeSPtr FindChild(char);
std::string GetChildChars();
TrieCheck::Check_t CalcCheck();
int CalcEndings();
int CalcHeight();
NodeSPtr AddChild(char);
void ChangeChild(NodeSPtr &, NodeSPtr &);
// bool IsEqual(const Node &) const;
void ClearCounted();
void SetCounted() { mCounted = true; }
bool IsCounted() const { return mCounted; }
protected:
int CountNodes();
int CalcAddr(int, bool);
NodeMap_t mChild;
Node *mParent;
int mEndings;
int mHeight;
unsigned int mAddr;
TrieCheck mCheck;
bool mEnd;
bool mCounted;
};
/**********************************************************************************
* Static table used for the crc implementation.
*/
static const TrieCheck::Check_t CrcTable[16] =
{
0x0000000000000000, 0x7d08ff3b88be6f81, 0xfa11fe77117cdf02, 0x8719014c99c2b083,
0xdf7adabd7a6e2d6f, 0xa2722586f2d042ee, 0x256b24ca6b12f26d, 0x5863dbf1e3ac9dec,
0x95ac9329ac4bc9b5, 0xe8a46c1224f5a634, 0x6fbd6d5ebd3716b7, 0x12b5926535897936,
0x4ad64994d625e4da, 0x37deb6af5e9b8b5b, 0xb0c7b7e3c7593bd8, 0xcdcf48d84fe75459
};
// Update the crc value with new data.
void TrieCheck::operator () (const void *v, unsigned int Len)
{
Check_t Crc = mCrc;
const unsigned char *Data = reinterpret_cast<const unsigned char *>(v);
while(Len--)
{
Crc = CrcTable[(Crc ^ (*Data >> 0)) & 0x0f] ^ (Crc >> 4);
Crc = CrcTable[(Crc ^ (*Data >> 4)) & 0x0f] ^ (Crc >> 4);
++Data;
}
mCrc = Crc;
}
Node::Node()
{
mEndings = -1;
mHeight = -1;
mEnd = false;
mParent = 0;
}
Node::Node(const Node &r)
{
*this = r;
}
Node::~Node()
{
}
Node &Node::operator = (const Node & r)
{
mChild = r.mChild;
mParent = r.mParent;
mEndings = r.mEndings;
mHeight = r.mHeight;
mCheck = r.mCheck;
mEnd = r.mEnd;
return *this;
}
/**********************************************************************************
* Generate a checksum for the current node. Value also depends of the
* checksum of any child nodes
*/
TrieCheck::Check_t Node::CalcCheck()
{
if (!mCheck)
{
// Not done this node before
char c;
NodeMap_t::iterator It;
mCheck.Init();
// Include number of children
c = mChild.size();
mCheck(&c, sizeof c);
// For each child include its character and node checksum
for(It = mChild.begin(); It != mChild.end(); ++It)
{
Check_t n = It->second->CalcCheck();
c = It->first;
mCheck(&c, sizeof c);
mCheck(&n, sizeof n);
}
// Finally include whether this node is an ending in the chaecksum
c = mEnd;
mCheck(&c, sizeof c);
}
return mCheck;
}
/**********************************************************************************
* Get number of nodes for this which end/finish a word
*/
int Node::CalcEndings()
{
if (mEndings < 0)
{
// Not already done this node,so calculate the ends
int n = 0;
NodeMap_t::iterator It;
// Number of endings is sum of the endings of the child nodes and plus this node if it ends a word
for(It = mChild.begin(); It != mChild.end(); ++It)
n += It->second->CalcEndings();
n += !!mEnd;
mEndings = n;
}
return mEndings;
}
/**********************************************************************************
* Calculate the height of the trie starting at current node
*/
int Node::CalcHeight()
{
if (mHeight < 0)
{
// Not already done this node,so calculate the height
int Hi = 0;
NodeMap_t::iterator It;
// Get height of all child nodes, remember the highest
for(It = mChild.begin(); It != mChild.end(); ++It)
{
int i = It->second->CalcHeight();
if (i >= Hi)
Hi = i+1;
}
mHeight = Hi;
}
return mHeight;
}
/**********************************************************************************
* Clear indication that node has been counted
*/
void Node::ClearCounted()
{
NodeMap_t::iterator It;
mCounted = false;
for(It = mChild.begin(); It != mChild.end(); ++It)
It->second->ClearCounted();
}
/**********************************************************************************
* Count this plus the number of child nodes. As part of the tree node count
* scan, make sure not to double count nodes
*/
int Node::CountNodes()
{
// Count is 0 if already done
if (mCounted)
return 0;
mCounted = true;
NodeMap_t::iterator It;
int i = 1; // 1 for this node
// Add the child nodes
for(It = mChild.begin(); It != mChild.end(); ++It)
i += It->second->CountNodes();
return i;
}
/**********************************************************************************
* Calculate the final node address
*/
int Node::CalcAddr(int Start, bool ManyEnds)
{
NodeMap_t::iterator It;
if (!(mCounted || (ManyEnds && (mEndings < 256))))
{
mCounted = true;
mAddr = Start++;
}
for(It = mChild.begin(); It != mChild.end(); ++It)
Start = It->second->CalcAddr(Start, ManyEnds);
return Start;
}
/**********************************************************************************
* Add the given character to the current node, return the next lower node
*/
NodeSPtr Node::AddChild(char c)
{
NodeMap_t::iterator It;
// Find character in map of child nodes
It = mChild.find(c);
if (It == mChild.end())
{
// New character, create new child node
NodeSPtr a(new Node);
a->mParent = this;
std::pair<char, NodeSPtr> x(c, a);
std::pair<NodeMap_t::iterator, bool> y = mChild.insert(x);
It = y.first;
}
return It->second;
}
/**********************************************************************************
* Find the child node which corresponds to the given character.
*/
NodeSPtr Node::FindChild(char Ch)
{
NodeMap_t::iterator It;
It = mChild.find(Ch);
if (It == mChild.end())
return NodeSPtr();
return It->second;
}
/**********************************************************************************
* Replace the current child node (old param) with a new child (Replace param),
* and update the new child parent.
*/
void Node::ChangeChild(NodeSPtr & Replace, NodeSPtr & Old)
{
NodeMap_t::iterator It;
for(It = mChild.begin(); It != mChild.end(); ++It)
{
NodeSPtr p = It->second;
if (p == Old)
{
It->second = Replace;
Replace->mParent = this;
break;
}
}
}
/**********************************************************************************
* Find all the characters corresponding to the children of this node.
*/
std::string Node::GetChildChars()
{
NodeMap_t::iterator It;
std::string Result;
for(It = mChild.begin(); It != mChild.end(); ++It)
{
char c = It->first;
Result += c;
}
return Result;
}
/**********************************************************************************
* struct to hold data read from input file (except for the word string)
*/
struct Entry
{
Entry() : mRank(0), mDict(0), mOrder(0), mOccurs(0) {}
int mRank;
int mDict;
int mOrder;
int mOccurs;
};
/**********************************************************************************
* Struct to hold a string and an int. Also provide the compare operators for std::set class
*/
struct StringInt
{
string s;
unsigned int i;
StringInt() { i=0; }
StringInt(const StringInt & r) : s(r.s), i(r.i) {}
StringInt & operator = (const StringInt & r) { i = r.i; s = r.s; return *this; }
bool operator < (const StringInt & r) const { return s < r.s; }
bool operator > (const StringInt & r) const { return s > r.s; }
bool operator == (const StringInt & r) const { return s == r.s; }
StringInt * Self() const { return const_cast<StringInt *>(this); }
};
typedef map<string, Entry> EntryMap_t;
typedef list<string> StringList_t;
typedef list<NodeSPtr> NodeList_t;
typedef set<StringInt> StringIntSet_t;
typedef vector<int> StringOfInts;
typedef vector<unsigned int> UintVect;
typedef vector<uint64_t> Uint64Vect;
typedef vector<StringInt *> StrIntPtrVect_t;
typedef vector<StringInt> StringIntVect_t;
// Variables holding 'interesting' information on the data
unsigned int MaxLength, MinLength, NumChars, NumInWords, NumDuplicate;
static string PassWithMaxChilds, MaxChildChars;
static unsigned int MaxNumChilds, MaxChildsPosn;
struct FileInfo
{
FileInfo() : Words(0), BruteIgnore(0), Accented(0), Dups(0), Used(0), Rank(0) { }
string Name;
StringList_t Pwds;
int Words;
int BruteIgnore;
int Accented;
int Dups;
int Used;
int Rank;
};
/**********************************************************************************
* Read the file of words and add them to the file information.
*/
static bool ReadInputFile(const string & FileName, FileInfo &Info, int MaxRank)
{
ifstream f(FileName.c_str());
if (!f.is_open())
{
cerr << "Error opening " << FileName << endl;
return false;
}
Info.Name = FileName;
// Rank is the position of the work in the dictionary file. Rank==1 is lowest for a word (and
// indicates a very popular or bad password).
int Rank = 0;
string Line;
while(getline(f, Line) && (Rank < MaxRank))
{
// Truncate at first space or tab to leave just the word in case additional info on line
string::size_type y = Line.find_first_of("\t ");
if (y != string::npos)
Line.erase(y);
y = Line.length();
if (!y)
continue;
++Info.Words;
// Only use words where all chars are ascii (no accents etc.)
string::size_type x;
double BruteForce = 1.0;
for(x = 0; x < y; ++x)
{
unsigned char c = Line[x];
if (c >= 128)
break;
c = tolower(c);
Line[x] = c;
BruteForce *= 26.0;
}
if (x < y)
{
++Info.Accented;
continue;
}
// Don't use words where the brute force strength is less than the word's rank
if (BruteForce < (Rank+1))
{
++Info.BruteIgnore;
continue;
}
// Remember some interesting info
if (y > MaxLength)
MaxLength = y;
if (y < MinLength)
MinLength = y;
NumChars += y;
Info.Pwds.push_back(Line);
++Rank;
}
f.close();
return true;
}
static void CombineWordLists(EntryMap_t & Entries, FileInfo *Infos, int NumInfo)
{
bool Done = false;
int Rank = 0;
while(!Done)
{
int i;
++Rank;
Done = true;
for(i = 0; i < NumInfo; ++i)
{
FileInfo *p = Infos + i;
while(!p->Pwds.empty())
{
Done = false;
string Word = p->Pwds.front();
p->Pwds.pop_front();
EntryMap_t::iterator It = Entries.find(Word);
if (It != Entries.end())
{
// Word is repeat of one from another file
p->Dups += 1;
++NumDuplicate;
}
else
{
// New word, add it
Entry e;
e.mDict = i;
e.mRank = Rank;
Entries.insert(std::pair<std::string, Entry>(Word, e));
p->Used += 1;
break;
}
}
}
}
}
/**********************************************************************************
* Use all words previously read from file(s) and add them to a Trie, which starts
* at Root. Also update a bool array indicating the chars used in the words.
*/
static void ProcessEntries(NodeSPtr Root, EntryMap_t & Entries, bool *InputCharSet)
{
EntryMap_t::iterator It;
std::string Text;
for(It = Entries.begin(); It != Entries.end(); ++It)
{
Text = It->first;
// Add latest word to tree
string::size_type x;
NodeSPtr pNode = Root;
for(x = 0; x < Text.length(); ++x)
{
char c = Text[x];
pNode = pNode->AddChild(c);
// Add char to set of used character codes
InputCharSet[c & 0xFF] = true;
}
pNode->SetEnd();
}
}
/**********************************************************************************
* Add the passed node to the list if it has same height as value in Hi (= number
* of steps to get to a terminal node). If current node has height greater than Hi,
* recursivly call with each child node as one of these may be at the required height.
*/
static void AddToListAtHeight(NodeList_t & Lst, NodeSPtr Node, int Hi)
{
if (Hi == Node->Height())
{
Lst.push_back(Node);
return;
}
if (Hi < Node->Height())
{
NodeMap_t::iterator It;
for(It = Node->ChildBegin(); It != Node->ChildEnd(); ++It)
{
AddToListAtHeight(Lst, It->second, Hi);
}
}
}
/**********************************************************************************
* Scan the trie and update the original word list with the alphabetical order
* (or 'index location') of the words
*/
static void ScanTrieForOrder(EntryMap_t & Entries, int & Ord, NodeSPtr Root, const string & Str)
{
if (Root->IsEnd())
{
// Root is a word ending node, so store its index in the input word store
EntryMap_t::iterator Ite;
Ite = Entries.find(Str);
if (Ite == Entries.end())
throw "Trie string not in entries";
Ite->second.mOrder = ++Ord;
}
NodeMap_t::iterator It;
string Tmp;
// For each child, append its character to the current word string and do a recursive
// call to update their word indexes.
for(It = Root->ChildBegin(); It != Root->ChildEnd(); ++It)
{
Tmp = Str + It->first;
ScanTrieForOrder(Entries, Ord, It->second, Tmp);
}
}
/**********************************************************************************
* Reduce the trie by merging tails where possible. Starting at greatest height,
* get a list of all nodes with given height, then test for identical nodes. If
* found, change the parent of the second identical node to use the first node,
* and delete second node and its children. Reduce height by one and repeat
* until height is zero.
*/
static void ReduceTrie(NodeSPtr Root)
{
int Height;
Root->CalcCheck();
NodeSPtr pNode = Root;
for(Height = Root->CalcHeight(); Height >= 0; --Height)
{
// Get a list of all nodes at given height
NodeList_t Lst;
AddToListAtHeight(Lst, Root, Height);
NodeList_t::iterator Ita, Itb;
for(Ita = Lst.begin(); Ita != Lst.end(); ++Ita)
{
// Going to use a CRC to decide if two nodes are identical
TrieCheck::Check_t Chka = (*Ita)->CalcCheck();
Itb = Ita;
for(++Itb; Itb != Lst.end(); )
{
if (Chka == (*Itb)->CalcCheck())
{
// Found two identical nodes (with identical children)
Node * Parentb = (*Itb)->GetParent();
if (Parentb)
{
// Change the 2nd parent to use the current node as child
// Remove the 2nd node from the scanning list to as it will
// get deleted by the sharing (as using std::shared_ptr)
Parentb->ChangeChild(*Ita, *Itb);
Itb = Lst.erase(Itb);
}
else
{
cout << " orphan ";
++Itb;
}
}
else
{
++Itb;
}
}
}
}
}
/**********************************************************************************
* Scan the trie to match with the supplied word. Return the order of the
* word, or -1 if it is not in the trie.
*/
static int CheckWord(NodeSPtr Root, const string & Str)
{
int i = 1;
bool e = false;
string::size_type x;
NodeSPtr p = Root;
for(x = 0; x < Str.length(); ++x)
{
int j;
NodeMap_t::iterator It;
// Scan children to find one that matches current character
char c = Str[x];
for(It = p->ChildBegin(); It != p->ChildEnd(); ++It)
{
if (It->first == c)
break;
// Add the number of endings at or below child to track the alphabetical index
j = It->second->CalcEndings();
i += j;
}
// Fail if no child matches the character
if (It == p->ChildEnd())
return -1;
// Allow for this node being a word ending
e = p->IsEnd();
if (e)
++i;
if (p->GetNumChild() > MaxNumChilds)
{
NodeMap_t::iterator Itc;
MaxNumChilds = p->GetNumChild();
MaxChildsPosn = x;
PassWithMaxChilds = Str;
MaxChildChars.clear();
for(Itc = p->ChildBegin(); Itc != p->ChildEnd(); ++Itc)
MaxChildChars += Itc->first;
}
p = It->second;
}
if (p && p->IsEnd())
{
if (x == Str.length())
return i;
}
return -1;
}
/**********************************************************************************
* Try to find every input word in the reduced trie. The order should also
* match, otherwise the reduction has corrupted the trie.
*/
static int CheckReduction(StringIntVect_t & Ranks, NodeSPtr Root, EntryMap_t & Entries)
{
int i = 0;
int n = 0;
EntryMap_t::iterator It;
std::string Text;
int b;
Ranks.resize(Entries.size()+1);
for(It = Entries.begin(); (It != Entries.end()) && (i <= 200000); ++It)
{
Text = It->first;
b = CheckWord(Root, Text);
if (b < 0)
{
++i;
cout << It->second.mOrder << ": Missing " << Text.c_str() << endl;
}
else if (It->second.mOrder != b)
{
++i;
cout << It->second.mOrder << ": Bad order " << b << " for " << Text.c_str() << endl;
}
else
{
//if (Text == "fred")
// cout << Text.c_str() << "-> " << It->second.mOrder << ", " << It->second.mRank << endl;
++n;
}
if (b >= int(Ranks.size()))
throw " Using Ranks beyond end";
if (b >= 0)
{
char Tmp[20];
Ranks[b].i = It->second.mRank;
snprintf(Tmp, sizeof(Tmp), "%d: ", n);
Ranks[b].s = string(Tmp) + Text;
}
// Try to find a non-existant word
Text.insert(0, "a");
Text += '#';
b = CheckWord(Root, Text);
if (b > 0)
throw string("Found non-existant word ") + Text;
}
if (i > 0)
throw "Missing words in reduction check = " + to_string(i);
return n;
}
struct ChkNum
{
int Match;
int Err;
ChkNum() : Match(0), Err(0) {}
ChkNum(const ChkNum &r) : Match(r.Match), Err(r.Err) {}
ChkNum & operator = (const ChkNum & r) { Match = r.Match; Err = r.Err; return *this; }
ChkNum & operator += (const ChkNum & r) { Match += r.Match; Err += r.Err; return *this; }
};
/**********************************************************************************
* Find all possible words in the trie and make sure they are input words.
* Return number of words found. Done as a second trie check.
*/
static ChkNum CheckEntries(NodeSPtr Root, string Str, const EntryMap_t & Entries)
{
ChkNum Ret;
if (Root->IsEnd())
{
// This is an end node, find the word in the input words
EntryMap_t::const_iterator It = Entries.find(Str);
if (It != Entries.end())
++Ret.Match;
else
++Ret.Err;
}
// Add each child character to the passed string and recursively check
NodeMap_t::iterator It;
for(It = Root->ChildBegin(); It != Root->ChildEnd(); ++It)
{
string Tmp = Str;
Tmp += It->first;
Ret += CheckEntries(It->second, Tmp, Entries);
}
return Ret;
}
/**********************************************************************************
* Convert the passed bool array of used chars into a character string
*/
string MakeCharSet(bool *InputCharSet)
{
int i;
string s;
for(i = 1; i < 256; ++i)
{
if (InputCharSet[i])
s += char(i);
}
return s;
}
/**********************************************************************************
* Create a set of strings which contain the possible characters matched at
* a node when checking a word.
*/
void MakeChildBitMap(StringIntSet_t & StrSet, NodeSPtr Root, int & Loc)
{
// Skip if already done
if (Root->IsCounted())
return;
string::size_type x;
StringInt In;
NodeSPtr p = Root;
In.s = Root->GetChildChars();
if (StrSet.find(In) == StrSet.end())
{
// Not already in set of possible child chars for a node, so add it
In.i = Loc++; // Address in the final output array
StrSet.insert(In);
}
// Recursively do the child nodes
for(x = 0; x < In.s.length(); ++x)
{
char c = In.s[x];
NodeSPtr q = p->FindChild(c);
if (q)
MakeChildBitMap(StrSet, q, Loc);
}
Root->SetCounted();
}
// Constants defining bit positions of node data
// Number of bits to represent the index of the child char pattern in the final child bitmap array,
const int BITS_CHILD_PATT_INDEX = 14;
// Number of bits to represent index of where the child pointers start for this node in
// the Child map array and its bit position
const int BITS_CHILD_MAP_INDEX = 18;
const int SHIFT_CHILD_MAP_INDEX = BITS_CHILD_PATT_INDEX;
// Bit positions of word ending indicator and indicator for number of word endings for this + child nodes is >= 256
const int SHIFT_WORD_ENDING_BIT = SHIFT_CHILD_MAP_INDEX + BITS_CHILD_MAP_INDEX;
const int SHIFT_LARGE_ENDING_BIT = SHIFT_WORD_ENDING_BIT + 1;
/**********************************************************************************
* Create the arrays of data that will be output
*/
void CreateArrays(NodeSPtr Root, StringIntSet_t & StrSet, StringOfInts & ChildAddrs, Uint64Vect & NodeData, UintVect & NodeEnds)
{
NodeMap_t::iterator Itc;
StringInt Tmp;
StringOfInts Chld;
// Find children in the child pattern array
Tmp.s= Root->GetChildChars();
StringIntSet_t::iterator Its = StrSet.find(Tmp);
// Make a 'string' of pointers to the children
for(Itc = Root->ChildBegin(); Itc != Root->ChildEnd(); ++Itc)
{
int i = Itc->second->GetAddr();
Chld.push_back(i);
}
// Find where in pointer array the child pointer string is
StringOfInts::size_type x = search(ChildAddrs.begin(), ChildAddrs.end(), Chld.begin(), Chld.end()) - ChildAddrs.begin();
if (x == ChildAddrs.size())
{
// Not found, add it
ChildAddrs.insert(ChildAddrs.end(), Chld.begin(), Chld.end());
}
// Val will contain the final node data
uint64_t Val = Its->i;
if (Val >= (1 << BITS_CHILD_PATT_INDEX))
{
char Tmp[20];
snprintf(Tmp, sizeof Tmp, "%u", Its->i);
throw string("Not enough bits for child pattern index value of ") + Tmp + " for " +
Its->s + " (BITS_CHILD_PATT_INDEX too small)";
}
if (x >= (1 << BITS_CHILD_MAP_INDEX))
{
char Tmp[24];
snprintf(Tmp, sizeof Tmp, "%lu", x);
throw string("Not enough bits for child map index value of ") + Tmp + " for " +
Its->s + " (BITS_CHILD_MAP_INDEX too small)";
}
Val |= x << SHIFT_CHILD_MAP_INDEX;
if (Root->IsEnd())
Val |= uint64_t(1) << SHIFT_WORD_ENDING_BIT;
if (Root->GetNumEnds() >= 256)
Val |= uint64_t(1) << SHIFT_LARGE_ENDING_BIT;
// Make sure output arrays are big enough
if (Root->GetAddr() > NodeData.size())
{
NodeData.resize(Root->GetAddr()+1, 4000000000);
NodeEnds.resize(Root->GetAddr()+1, 4000000000);
}
// Save the node data and number of word endings for the node
NodeData[Root->GetAddr()] = Val;
NodeEnds[Root->GetAddr()] = Root->GetNumEnds();
// Now do the children
for(Itc = Root->ChildBegin(); Itc != Root->ChildEnd(); ++Itc)
{
CreateArrays(Itc->second, StrSet, ChildAddrs, NodeData, NodeEnds);
}
}
/**********************************************************************************
* Output the data as a binary file.
*/
static int OutputBinary(ostream *Out, const string & ChkFile, const string & CharSet, StringIntSet_t & StrSet, //NodeSPtr & Root,
StringOfInts & ChildAddrs, Uint64Vect & NodeData, UintVect & NodeEnds, StringIntVect_t & Ranks)
{
int OutputSize;
unsigned int FewEndStart = 2000000000;
unsigned int i;
unsigned int Index;
unsigned short u;
TrieCheck h;
for(Index = 0; Index < NodeData.size(); ++Index)
{
uint64_t v = NodeData[Index];
if ((FewEndStart >= 2000000000) && !(v & (uint64_t(1) << SHIFT_LARGE_ENDING_BIT)))
{
FewEndStart = Index;
break;
}
}
// Header words
unsigned int NumWordEnd;
const unsigned int MAGIC = 'z' + ('x'<< 8) + ('c' << 16) + ('v' << 24);
Out->write((char *)&MAGIC, sizeof MAGIC); // Write magic
h(&MAGIC, sizeof MAGIC);
OutputSize = sizeof MAGIC;
i = NodeData.size();
Out->write((char *)&i, sizeof i); // Write number of nodes
h(&i, sizeof i);
OutputSize += sizeof i;
i = ChildAddrs.size();
if (NodeData.size() > numeric_limits<unsigned int>::max())
i |= 1<<31;
Out->write((char *)&i, sizeof i); // Write number of child location entries & size of each entry
h(&i, sizeof i);
OutputSize += sizeof i;
i = Ranks.size();
Out->write((char *)&i, sizeof i); // Write number of ranks
h(&i, sizeof i);
OutputSize += sizeof i;
NumWordEnd = (NodeData.size() + 7) / 8;
Out->write((char *)&NumWordEnd, sizeof NumWordEnd); // Write number of word endings
h(&NumWordEnd, sizeof NumWordEnd);
OutputSize += sizeof NumWordEnd;
i = StrSet.size();
Out->write((char *)&i, sizeof i); // Write size of of child bitmap data
h(&i, sizeof i);
OutputSize += sizeof i;
unsigned int BytePerEntry = (CharSet.length() + 7) / 8;
Out->write((char *)&BytePerEntry, sizeof BytePerEntry); // Write size of each child bitmap
h(&BytePerEntry, sizeof BytePerEntry);
OutputSize += sizeof BytePerEntry;
Out->write((char *)&FewEndStart, sizeof FewEndStart); // Write number of large end counts
h(&FewEndStart, sizeof FewEndStart);
OutputSize += sizeof FewEndStart;
i = NodeData.size();
Out->write((char *)&i, sizeof i); // Write number of end counts
h(&i, sizeof i);
OutputSize += sizeof i;
i = CharSet.length();
Out->write((char *)&i, sizeof i); // Write size of character set
h(&i, sizeof i);
OutputSize += sizeof i;
// Output array of node data
unsigned char *WordEnds = new unsigned char[NumWordEnd];
unsigned char v = 0;
unsigned int z = 0;
int y = 0;
for(Index = 0; Index < NodeData.size(); ++Index)
{
i = NodeData[Index];
Out->write((char *)&i, sizeof i);
h(&i, sizeof i);