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Move to new directory format.

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This commit is contained in:
Arthur Britto
2012-07-07 17:46:47 -07:00
parent 4b20162e7f
commit e5ad771708
11 changed files with 368 additions and 295 deletions
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150
src/LedgerIndex.cpp
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@@ -1,60 +1,26 @@
#include "Ledger.h"
// For an entry put in the 64 bit index or quality.
uint256 Ledger::getQualityIndex(const uint256& uBase, const uint64 uNodeDir)
{
// Indexes are stored in big endian format: they print as hex as stored.
// Most significant bytes are first. Least significant bytes repesent adjcent entries.
// We place uNodeDir in the 8 right most bytes to be adjcent.
// Want uNodeDir in big endian format so ++ goes to the next entry for indexes.
uint256 uNode(uBase);
((uint64*) uNode.end())[-1] = htobe64(uNodeDir);
return uNode;
}
uint256 Ledger::getAccountRootIndex(const uint160& uAccountID)
{
Serializer s;
Serializer s(22);
s.add16(spaceAccount);
s.add160(uAccountID);
return s.getSHA512Half();
}
// What is important:
// --> uNickname: is a Sha256
// <-- SHA512/2: for consistency and speed in generating indexes.
uint256 Ledger::getNicknameIndex(const uint256& uNickname)
{
Serializer s;
s.add16(spaceNickname);
s.add256(uNickname);
return s.getSHA512Half();
}
uint256 Ledger::getGeneratorIndex(const uint160& uGeneratorID)
{
Serializer s;
s.add16(spaceGenerator);
s.add160(uGeneratorID);
return s.getSHA512Half();
}
uint256 Ledger::getRippleStateIndex(const NewcoinAddress& naA, const NewcoinAddress& naB, const uint160& uCurrency)
{
uint160 uAID = naA.getAccountID();
uint160 uBID = naB.getAccountID();
bool bAltB = uAID < uBID;
Serializer s;
s.add16(spaceRipple);
s.add160(bAltB ? uAID : uBID);
s.add160(bAltB ? uBID : uAID);
s.add160(uCurrency);
return s.getSHA512Half();
}
uint256 Ledger::getRippleDirIndex(const uint160& uAccountID)
{
Serializer s;
s.add16(spaceRippleDir);
s.add160(uAccountID);
s.add16(spaceAccount); // 2
s.add160(uAccountID); // 20
return s.getSHA512Half();
}
@@ -78,26 +44,92 @@ uint256 Ledger::getBookBase(const uint160& uCurrencyIn, const uint160& uAccountI
s.add160(uAccountIn); // 20
s.add160(uAccountOut); // 20
return getDirIndex(s.getSHA512Half()); // Return with index 0.
return getQualityIndex(s.getSHA512Half()); // Return with quality 0.
}
uint256 Ledger::getDirNodeIndex(const uint256& uDirRoot, const uint64 uNodeIndex)
{
if (uNodeIndex)
{
Serializer s(42);
s.add16(spaceDirNode); // 2
s.add256(uDirRoot); // 32
s.add64(uNodeIndex); // 8
return s.getSHA512Half();
}
else
{
return uDirRoot;
}
}
uint256 Ledger::getGeneratorIndex(const uint160& uGeneratorID)
{
Serializer s(22);
s.add16(spaceGenerator); // 2
s.add160(uGeneratorID); // 20
return s.getSHA512Half();
}
// What is important:
// --> uNickname: is a Sha256
// <-- SHA512/2: for consistency and speed in generating indexes.
uint256 Ledger::getNicknameIndex(const uint256& uNickname)
{
Serializer s(34);
s.add16(spaceNickname); // 2
s.add256(uNickname); // 32
return s.getSHA512Half();
}
uint256 Ledger::getOfferIndex(const uint160& uAccountID, uint32 uSequence)
{
Serializer s;
Serializer s(26);
s.add16(spaceOffer);
s.add160(uAccountID);
s.add32(uSequence);
s.add16(spaceOffer); // 2
s.add160(uAccountID); // 20
s.add32(uSequence); // 4
return s.getSHA512Half();
}
uint256 Ledger::getOfferDirIndex(const uint160& uAccountID)
{
Serializer s;
Serializer s(22);
s.add16(spaceOfferDir);
s.add160(uAccountID);
s.add16(spaceOfferDir); // 2
s.add160(uAccountID); // 20
return s.getSHA512Half();
}
uint256 Ledger::getRippleDirIndex(const uint160& uAccountID)
{
Serializer s(22);
s.add16(spaceRippleDir); // 2
s.add160(uAccountID); // 20
return s.getSHA512Half();
}
uint256 Ledger::getRippleStateIndex(const NewcoinAddress& naA, const NewcoinAddress& naB, const uint160& uCurrency)
{
uint160 uAID = naA.getAccountID();
uint160 uBID = naB.getAccountID();
bool bAltB = uAID < uBID;
Serializer s(62);
s.add16(spaceRipple); // 2
s.add160(bAltB ? uAID : uBID); // 20
s.add160(bAltB ? uBID : uAID); // 20
s.add160(uCurrency); // 20
return s.getSHA512Half();
}