nchizhov /
inok-dbf
| Total Complexity | 41 |
| Total Lines | 125 |
| Duplicated Lines | 0 % |
| Changes | 4 | ||
| Bugs | 0 | Features | 0 |
Complex classes like Records often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use Records, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 13 | class Records { |
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| 14 | private $fp, $headers, $columns, $memo, $encode; |
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| 15 | private $records = 0; |
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| 16 | |||
| 17 | private $v_fox_versions = [48, 49, 50]; |
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| 18 | private $v_fox = false; |
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| 19 | private $nullFlagColumns = []; |
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| 20 | private $logicals = ['t', 'y', 'д']; |
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| 21 | private $notTrimTypes = ["M", "P", "G", "I", "Y", "T", "0"]; |
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| 22 | |||
| 23 | /** |
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| 24 | * @throws Exception |
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| 25 | */ |
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| 26 | public function __construct($data, $encode = "utf-8", $headers = null, $columns = null) { |
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| 27 | if ($data instanceof Table) { |
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| 28 | $this->headers = $data->getHeaders(); |
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| 29 | $this->columns = $data->getColumns(); |
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| 30 | $this->fp = $data->getData(); |
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| 31 | } |
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| 32 | else { |
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| 33 | if (is_null($headers) || is_null($columns)) { |
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| 34 | throw new Exception('Not correct data in Record class'); |
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| 35 | } |
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| 36 | $this->fp = $data; |
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| 37 | $this->headers = $headers; |
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| 38 | $this->columns = $columns; |
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| 39 | } |
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| 40 | $this->encode = $encode; |
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| 41 | if ($this->headers["memo"] && !is_null($this->headers["memo_file"])) { |
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| 42 | $this->memo = new Memo($this->headers["memo_file"]); |
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| 43 | } |
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| 44 | $this->v_fox = in_array($this->headers["version"], $this->v_fox_versions); |
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| 45 | } |
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| 46 | |||
| 47 | public function nextRecord() { |
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| 48 | if ($this->records >= $this->headers["records"]) { |
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| 49 | if ($this->memo instanceof Memo) { |
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| 50 | unset($this->memo); |
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| 51 | } |
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| 52 | return false; |
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| 53 | } |
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| 54 | $record = []; |
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| 55 | $data = fread($this->fp, $this->headers["record_length"]); |
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| 56 | $record["deleted"] = (unpack("C", $data[0])[1] == 42); |
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| 57 | $pos = 1; |
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| 58 | foreach ($this->columns as $column) { |
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| 59 | $sub_data = (in_array($column["type"], $this->notTrimTypes)) ? substr($data, $pos, $column["length"]) : trim(substr($data, $pos, $column["length"])); |
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| 60 | switch($column["type"]) { |
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| 61 | case "F": |
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| 62 | case "N": |
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| 63 | $record[$column["name"]] = (is_numeric($sub_data)) ? (($column["decimal"]) ? (float) $sub_data : (int) $sub_data) : null; |
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| 64 | break; |
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| 65 | case "Y": |
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| 66 | $decimal = intval(str_pad("1", $column["decimal"] + 1, "0")); |
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| 67 | $record[$column["name"]] = round(unpack("Q", $sub_data)[1] / $decimal, $column["decimal"]); |
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| 68 | break; |
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| 69 | case "I": |
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| 70 | $record[$column["name"]] = unpack("l", $sub_data)[1]; |
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| 71 | break; |
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| 72 | case "@": |
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| 73 | case "T": |
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| 74 | $record[$column["name"]] = $this->getDateTime($sub_data); |
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| 75 | break; |
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| 76 | case "D": |
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| 77 | $record[$column["name"]] = empty($sub_data) ? null : $sub_data; |
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| 78 | break; |
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| 79 | case "L": |
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| 80 | $record[$column["name"]] = ($sub_data == "?" || empty($sub_data)) ? null : (in_array(strtolower($sub_data), $this->logicals)); |
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| 81 | break; |
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| 82 | case "C": |
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| 83 | $record[$column["name"]] = $this->convertChar($sub_data); |
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| 84 | break; |
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| 85 | case "M": |
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| 86 | case "P": |
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| 87 | case "G": |
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| 88 | $sub_data = (strlen($sub_data) == 4) ? unpack("L", $sub_data)[1] : (int)$sub_data; |
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| 89 | if (!$sub_data) { |
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| 90 | $record[$column["name"]] = ""; |
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| 91 | } else { |
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| 92 | $record[$column["name"]] = $this->getMemo($sub_data, ($column["type"] == "M")); |
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| 93 | } |
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| 94 | break; |
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| 95 | case "0": |
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| 96 | $value = intval(unpack("C*", $sub_data)[1]); |
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| 97 | $record[$column["name"]] = $value; |
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| 98 | foreach ($this->nullFlagColumns as $index => $name) { |
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| 99 | if (($value >> $index) & 1) { |
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| 100 | $record[$name] = null; |
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| 101 | } |
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| 102 | } |
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| 103 | break; |
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| 104 | } |
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| 105 | $this->checkNullColumn($column); |
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| 106 | $pos += $column["length"]; |
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| 107 | } |
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| 108 | $this->records++; |
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| 109 | return $record; |
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| 110 | } |
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| 111 | |||
| 112 | private function checkNullColumn($column) { |
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| 113 | if (!empty($column["has_null"])) { |
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| 114 | $this->nullFlagColumns[] = $column["name"]; |
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| 115 | } |
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| 116 | } |
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| 117 | |||
| 118 | private function getMemo($data, $convert = true) { |
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| 121 | } |
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| 122 | |||
| 123 | private function convertChar($data) { |
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| 124 | return iconv($this->headers["charset_name"], $this->encode, str_replace("\r\n", "\n", $data)); |
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| 125 | } |
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| 126 | |||
| 127 | private function getDateTime($data) { |
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| 138 | } |
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| 139 | } |
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| 140 |
