GithubHint.sol

//! Github Hinting contract.
//! By Gav Wood (Ethcore), 2016.
//! Released under the Apache Licence 2.

pragma solidity ^0.4.6;

contract GithubHint {
	struct Entry {
		string accountSlashRepo;
		bytes20 commit;
		address owner;
	}

	modifier when_edit_allowed(bytes32 _content) { if (entries[_content].owner != 0 && entries[_content].owner != msg.sender) return; _; }

	function hint(bytes32 _content, string _accountSlashRepo, bytes20 _commit) when_edit_allowed(_content) {
		entries[_content] = Entry(_accountSlashRepo, _commit, msg.sender);
	}

	function hintURL(bytes32 _content, string _url) when_edit_allowed(_content) {
		entries[_content] = Entry(_url, 0, msg.sender);
	}

	function unhint(bytes32 _content) when_edit_allowed(_content) {
		delete entries[_content];
	}

	mapping (bytes32 => Entry) public entries;
}