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Jun 15th, 2017
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  1. pragma solidity ^0.4.11;
  2.  
  3. contract Token {
  4. string public symbol = "";
  5. string public name = "";
  6. uint8 public constant decimals = 18;
  7. uint256 _totalSupply = 0;
  8. address owner = 0;
  9. bool setupDone = false;
  10.  
  11. event Transfer(address indexed _from, address indexed _to, uint256 _value);
  12. event Approval(address indexed _owner, address indexed _spender, uint256 _value);
  13.  
  14. mapping(address => uint256) balances;
  15.  
  16. mapping(address => mapping (address => uint256)) allowed;
  17.  
  18. function Token(address adr) {
  19. owner = adr;
  20. }
  21.  
  22. function SetupToken(string tokenName, string tokenSymbol, uint256 tokenSupply)
  23. {
  24. if (msg.sender == owner && setupDone == false)
  25. {
  26. symbol = tokenSymbol;
  27. name = tokenName;
  28. _totalSupply = tokenSupply * 1000000000000000000;
  29. balances[owner] = _totalSupply;
  30. setupDone = true;
  31. }
  32. }
  33.  
  34. function totalSupply() constant returns (uint256 totalSupply) {
  35. return _totalSupply;
  36. }
  37.  
  38. function balanceOf(address _owner) constant returns (uint256 balance) {
  39. return balances[_owner];
  40. }
  41.  
  42. function transfer(address _to, uint256 _amount) returns (bool success) {
  43. if (balances[msg.sender] >= _amount
  44. && _amount > 0
  45. && balances[_to] + _amount > balances[_to]) {
  46. balances[msg.sender] -= _amount;
  47. balances[_to] += _amount;
  48. Transfer(msg.sender, _to, _amount);
  49. return true;
  50. } else {
  51. return false;
  52. }
  53. }
  54.  
  55. function transferFrom(
  56. address _from,
  57. address _to,
  58. uint256 _amount
  59. ) returns (bool success) {
  60. if (balances[_from] >= _amount
  61. && allowed[_from][msg.sender] >= _amount
  62. && _amount > 0
  63. && balances[_to] + _amount > balances[_to]) {
  64. balances[_from] -= _amount;
  65. allowed[_from][msg.sender] -= _amount;
  66. balances[_to] += _amount;
  67. Transfer(_from, _to, _amount);
  68. return true;
  69. } else {
  70. return false;
  71. }
  72. }
  73.  
  74. function approve(address _spender, uint256 _amount) returns (bool success) {
  75. allowed[msg.sender][_spender] = _amount;
  76. Approval(msg.sender, _spender, _amount);
  77. return true;
  78. }
  79.  
  80. function allowance(address _owner, address _spender) constant returns (uint256 remaining) {
  81. return allowed[_owner][_spender];
  82. }
  83. }
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