/// <summary>
/// Ctor: init from compiled binary file.
/// </summary>
public HeadwordInfo(string dataFileName)
{
this.dataFileName = dataFileName;
using (BinReader br = new BinReader(dataFileName))
{
// Start of dictionary index
int dictStartPos = br.ReadInt();
// Number of characters
int chrCnt = br.ReadInt();
// File pointer of each character's info
for (int i = 0; i != chrCnt; ++i)
{
short chrVal = br.ReadShort();
char chr = (char)chrVal;
int filePos = br.ReadInt();
chrPoss[(int)chr] = filePos;
}
// Read sorted list of hash chain pointers
br.Position = dictStartPos;
int hashCnt = br.ReadInt();
hashPtrs = new HashChainPointer[hashCnt];
for (int i = 0; i != hashCnt; ++i)
{
int hash = br.ReadInt();
int cdp = br.ReadInt();
int hdp = br.ReadInt();
hashPtrs[i] = new HashChainPointer(hash, cdp, hdp);
}
}
}
/// <summary>
/// See <see cref="IHeadwordInfo.GetEntries"/>.
/// </summary>
public void GetEntries(string simp, out CedictEntry[] ced, out CedictEntry[] hdd)
{
List <CedictEntry> cedList = new List <CedictEntry>();
List <CedictEntry> hddList = new List <CedictEntry>();
int hash = CedictEntry.Hash(simp);
// Do we have this hash?
HashChainPointer hcp = new HashChainPointer(hash);
int pos = Array.BinarySearch(hashPtrs, hcp, new HashComp());
using (BinReader br = new BinReader(dataFileName))
{
// CEDICT entries
if (pos >= 0 && hashPtrs[pos].CedictPos != 0)
{
int binPos = hashPtrs[pos].CedictPos;
while (binPos != 0)
{
br.Position = binPos;
// Next in chain
binPos = br.ReadInt();
// Entry
CedictEntry entry = new CedictEntry(br);
// Only keep if simplified really is identical
// Could be a hash collision
if (entry.ChSimpl == simp)
{
cedList.Add(entry);
}
}
}
// HanDeDict entries
if (pos >= 0 && hashPtrs[pos].HanDeDictPos != 0)
{
int binPos = hashPtrs[pos].HanDeDictPos;
while (binPos != 0)
{
br.Position = binPos;
// Next in chain
binPos = br.ReadInt();
// Entry
CedictEntry entry = new CedictEntry(br);
// Only keep if simplified really is identical
// Could be a hash collision
if (entry.ChSimpl == simp)
{
hddList.Add(entry);
}
}
}
}
// Our results
ced = cedList.ToArray();
hdd = hddList.ToArray();
}
/// <summary>
/// See <see cref="ZD.Common.IHeadwordInfo.GetPossibleHeadwords"/>.
/// </summary>
public HeadwordSyll[][] GetPossibleHeadwords(string simp, bool unihanFilter)
{
int hash = CedictEntry.Hash(simp);
// Do we have this hash?
HashChainPointer hcp = new HashChainPointer(hash);
int pos = Array.BinarySearch(hashPtrs, hcp, new HashComp());
if (pos < 0 || hashPtrs[pos].CedictPos == 0)
{
return(new HeadwordSyll[0][]);
}
// Yes! Read all entries with this hash from chain; keep those where simplified really matches.
List <HeadwordSyll[]> cdHeads = new List <HeadwordSyll[]>();
using (BinReader br = new BinReader(dataFileName))
{
int binPos = hashPtrs[pos].CedictPos;
while (binPos != 0)
{
br.Position = binPos;
// Next in chain
binPos = br.ReadInt();
// Entry
CedictEntry entry = new CedictEntry(br);
// Only keep if simplified really is identical
// Could be a hash collision
if (entry.ChSimpl == simp)
{
addHeadIfNew(cdHeads, entry, unihanFilter);
}
}
}
if (cdHeads.Count == 0)
{
return(new HeadwordSyll[0][]);
}
return(cdHeads.ToArray());
}
