|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
namespace frictionlessdata\tableschema\DataSources; |
|
4
|
|
|
|
|
5
|
|
|
use frictionlessdata\tableschema\Exceptions\DataSourceException; |
|
6
|
|
|
|
|
7
|
|
|
/** |
|
8
|
|
|
* handles reading data from a csv source |
|
9
|
|
|
* responsible for finding the header row based on options |
|
10
|
|
|
* support skipping rows from the csv. |
|
11
|
|
|
*/ |
|
12
|
|
|
class CsvDataSource extends BaseDataSource |
|
13
|
|
|
{ |
|
14
|
|
|
/** |
|
15
|
|
|
* @throws DataSourceException |
|
16
|
|
|
*/ |
|
17
|
|
|
public function open() |
|
18
|
|
|
{ |
|
19
|
|
|
$this->curRowNum = 0; |
|
20
|
|
|
try { |
|
21
|
|
|
$this->resource = fopen($this->dataSource, 'r'); |
|
22
|
|
|
} catch (\Exception $e) { |
|
23
|
|
|
throw new DataSourceException($e->getMessage()); |
|
24
|
|
|
} |
|
25
|
|
|
$this->headerRow = $this->getOption('headerRow'); |
|
26
|
|
|
if ($this->headerRow) { |
|
27
|
|
|
$headerRowNum = 0; |
|
28
|
|
|
$defaultSkipRows = 0; |
|
29
|
|
|
} else { |
|
30
|
|
|
$defaultSkipRows = $headerRowNum = $this->getOption('headerRowNum', 1); |
|
31
|
|
|
} |
|
32
|
|
|
$skipRows = $this->getOption('skipRows', $defaultSkipRows); |
|
33
|
|
|
if ($skipRows > 0) { |
|
34
|
|
|
foreach (range(1, $skipRows) as $i) { |
|
35
|
|
|
$row = $this->getRow(); |
|
36
|
|
|
$this->skippedRows[] = $row; |
|
37
|
|
|
if ($i == $headerRowNum) { |
|
38
|
|
|
$this->headerRow = $row; |
|
39
|
|
|
} |
|
40
|
|
|
} |
|
41
|
|
|
} |
|
42
|
|
|
if (!$this->headerRow) { |
|
43
|
|
|
throw new DataSourceException('Failed to get header row'); |
|
44
|
|
|
} |
|
45
|
|
|
} |
|
46
|
|
|
|
|
47
|
|
|
/** |
|
48
|
|
|
* @return array |
|
49
|
|
|
*/ |
|
50
|
|
|
public function getSkippedRows() |
|
51
|
|
|
{ |
|
52
|
|
|
return $this->skippedRows; |
|
53
|
|
|
} |
|
54
|
|
|
|
|
55
|
|
|
/** |
|
56
|
|
|
* @return array |
|
57
|
|
|
* |
|
58
|
|
|
* @throws DataSourceException |
|
59
|
|
|
*/ |
|
60
|
|
|
public function getNextLine() |
|
61
|
|
|
{ |
|
62
|
|
|
$row = $this->getRow(); |
|
63
|
|
|
$colNum = 0; |
|
64
|
|
|
$obj = []; |
|
65
|
|
|
foreach ($this->headerRow as $fieldName) { |
|
66
|
|
|
$obj[$fieldName] = $row[$colNum++]; |
|
67
|
|
|
} |
|
68
|
|
|
|
|
69
|
|
|
return $obj; |
|
70
|
|
|
} |
|
71
|
|
|
|
|
72
|
|
|
/** |
|
73
|
|
|
* @return bool |
|
74
|
|
|
* |
|
75
|
|
|
* @throws DataSourceException |
|
76
|
|
|
*/ |
|
77
|
|
|
public function isEof() |
|
78
|
|
|
{ |
|
79
|
|
|
try { |
|
80
|
|
|
return feof($this->resource); |
|
81
|
|
|
} catch (\Exception $e) { |
|
82
|
|
|
throw new DataSourceException($e->getMessage(), $this->curRowNum); |
|
83
|
|
|
} |
|
84
|
|
|
} |
|
85
|
|
|
|
|
86
|
|
|
/** |
|
87
|
|
|
* @throws DataSourceException |
|
88
|
|
|
*/ |
|
89
|
|
|
public function close() |
|
90
|
|
|
{ |
|
91
|
|
|
try { |
|
92
|
|
|
fclose($this->resource); |
|
93
|
|
|
} catch (\Exception $e) { |
|
94
|
|
|
throw new DataSourceException($e->getMessage(), $this->curRowNum); |
|
95
|
|
|
} |
|
96
|
|
|
} |
|
97
|
|
|
|
|
98
|
|
|
public function save($outputDataSource) { |
|
99
|
|
|
$file = fopen($outputDataSource, 'w'); |
|
100
|
|
|
fputcsv($file, $this->headerRow); |
|
101
|
|
|
while (!$this->isEof()) { |
|
102
|
|
|
fputcsv($file, array_values($this->getNextLine())); |
|
103
|
|
|
} |
|
104
|
|
|
fclose($file); |
|
105
|
|
|
} |
|
106
|
|
|
|
|
107
|
|
|
protected $resource; |
|
108
|
|
|
protected $headerRow; |
|
109
|
|
|
protected $skippedRows; |
|
110
|
|
|
protected $curRowNum; |
|
111
|
|
|
|
|
112
|
|
|
/** |
|
113
|
|
|
* @return array |
|
114
|
|
|
* |
|
115
|
|
|
* @throws DataSourceException |
|
116
|
|
|
*/ |
|
117
|
|
|
protected function getRow() |
|
118
|
|
|
{ |
|
119
|
|
|
++$this->curRowNum; |
|
120
|
|
|
try { |
|
121
|
|
|
return fgetcsv($this->resource); |
|
122
|
|
|
} catch (\Exception $e) { |
|
123
|
|
|
throw new DataSourceException($e->getMessage(), $this->curRowNum); |
|
124
|
|
|
} |
|
125
|
|
|
} |
|
126
|
|
|
} |
|
127
|
|
|
|
OriHoch /
tableschema-php
