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102 lines (80 loc) · 2.49 KB
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/*
* Mango Repository
* Copyright (C) 2016 Alex Beregszaszi
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, version 3 of the License only.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
import "MangoRepoInterface.sol";
contract MangoRepo is MangoRepoInterface {
address owner;
string[] refKeys;
mapping (string => string) refs;
string[] snapshots;
modifier owneronly {
if (msg.sender != owner) {
throw;
}
_
}
function MangoRepo() {
owner = msg.sender;
}
function repoInterfaceVersion() constant returns (uint) {
return 1;
}
function refCount() constant returns (uint) {
return refKeys.length;
}
function refName(uint index) constant returns (string ref) {
ref = refKeys[index];
}
function getRef(string ref) constant returns (string hash) {
hash = refs[ref];
}
function __findRef(string ref) private returns (int) {
/* Horrible way to add a new key to the list */
for (var i = 0; i < refKeys.length; i++)
if (strEqual(refKeys[i], ref))
return i;
return -1;
}
function setRef(string ref, string hash) owneronly {
if (__findRef(ref) == -1)
refKeys.push(ref);
refs[ref] = hash;
}
function deleteRef(string ref) owneronly {
int pos = __findRef(ref);
if (pos != -1) {
// FIXME: shrink the array?
refKeys[uint(pos)] = "";
}
// FIXME: null? string(0)?
refs[ref] = "";
}
function strEqual(string a, string b) private returns (bool) {
return sha3(a) == sha3(b);
}
function snapshotCount() constant returns (uint) {
return snapshots.length;
}
function getSnapshot(uint index) constant returns (string) {
return snapshots[index];
}
function addSnapshot(string hash) owneronly {
snapshots.push(hash);
}
function isObsolete() constant returns (bool) {
return false;
}
}