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77 lines
2.3 KiB
Solidity
77 lines
2.3 KiB
Solidity
pragma solidity ^0.8.0;
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library RepositoryLib {
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struct refInfo {
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bytes20 hash;
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uint96 index;
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}
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struct refData {
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bytes20 hash;
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bytes name;
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}
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struct BranchInfo{
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mapping(bytes => refInfo) branchToRefInfo; // dev => {hash: 0x1234..., index: 1 }
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bytes[] branchs; // 有几条branch,就有几个reference
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}
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function listBranchs(BranchInfo storage info) external view returns (refData[] memory list) {
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list = new refData[](info.branchs.length);
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for (uint index = 0; index < info.branchs.length; index++) {
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list[index] = _convertToRefData(
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info,
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info.branchToRefInfo[info.branchs[index]]
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);
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}
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}
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function updateBranch(
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BranchInfo storage info,
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bytes memory repositoryName,
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bytes memory branch,
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bytes20 refHash
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) external {
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bytes memory fullname = bytes.concat(repositoryName,"/",branch);
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require(refHash!=bytes20(0),"reference hash don't allow to set 0x0" );
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if (info.branchToRefInfo[fullname].hash==bytes20(0)) {
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info.branchToRefInfo[fullname].hash = refHash;
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info.branchToRefInfo[fullname].index = uint96(info.branchs.length);
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info.branchs.push(fullname);
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}else {
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info.branchToRefInfo[fullname].hash = refHash;
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}
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}
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function removeBranch(
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BranchInfo storage info,
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bytes memory repositoryName,
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bytes memory branch
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) external {
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bytes memory fullname = bytes.concat(repositoryName,"/",branch);
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refInfo memory refI = info.branchToRefInfo[fullname];
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require(
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refI.hash != bytes20(0),
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"Reference of this name does not exist"
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);
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uint256 lastIndex = info.branchs.length -1 ;
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if (refI.index < lastIndex){
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info.branchToRefInfo[info.branchs[lastIndex]].index = refI.index;
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info.branchs[refI.index] = info.branchs[lastIndex];
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}
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info.branchs.pop();
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delete info.branchToRefInfo[fullname];
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}
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function _convertToRefData(
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BranchInfo storage info,
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refInfo memory rInfo
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) internal view returns (refData memory res) {
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res.hash = rInfo.hash;
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res.name = info.branchs[rInfo.index];
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}
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} |