1 | <?php |
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2 | /** |
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3 | * This file is part of the ZBateson\StreamDecorators project. |
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4 | * |
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5 | * @license http://opensource.org/licenses/bsd-license.php BSD |
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6 | */ |
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7 | namespace ZBateson\StreamDecorators; |
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8 | |||
9 | use Psr\Http\Message\StreamInterface; |
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10 | use GuzzleHttp\Psr7\StreamDecoratorTrait; |
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11 | |||
12 | /** |
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13 | * Inserts line ending characters after the set number of characters have been |
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14 | * written to the underlying stream. |
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15 | * |
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16 | * @author Zaahid Bateson |
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Content of the @author tag must be in the form "Display Name <[email protected]>"
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17 | */ |
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18 | class ChunkSplitStream implements StreamInterface |
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19 | { |
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20 | use StreamDecoratorTrait; |
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21 | |||
22 | /** |
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23 | * @var int Number of bytes written, and importantly, if non-zero, writes a |
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24 | * final $lineEnding on close (and so maintained instead of using |
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25 | * tell() directly) |
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26 | */ |
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27 | private $position; |
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28 | |||
29 | /** |
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30 | * @var int The number of characters in a line before inserting $lineEnding. |
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31 | */ |
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32 | private $lineLength; |
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33 | |||
34 | /** |
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35 | * @var string The line ending characters to insert. |
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36 | */ |
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37 | private $lineEnding; |
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38 | |||
39 | /** |
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40 | * @var int The strlen() of $lineEnding |
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41 | */ |
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42 | private $lineEndingLength; |
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43 | |||
44 | /** |
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45 | * @param StreamInterface $stream |
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46 | * @param int $lineLength |
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47 | * @param string $lineEnding |
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48 | */ |
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49 | 2 | public function __construct(StreamInterface $stream, $lineLength = 76, $lineEnding = "\r\n") |
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50 | { |
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51 | 2 | $this->stream = $stream; |
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Equals sign not aligned with surrounding assignments; expected 11 spaces but found 1 space
This check looks for multiple assignments in successive lines of code. It will report an issue if the operators are not in a straight line. To visualize $a = "a";
$ab = "ab";
$abc = "abc";
will produce issues in the first and second line, while this second example $a = "a";
$ab = "ab";
$abc = "abc";
will produce no issues.
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52 | 2 | $this->lineLength = $lineLength; |
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Equals sign not aligned with surrounding assignments; expected 7 spaces but found 1 space
This check looks for multiple assignments in successive lines of code. It will report an issue if the operators are not in a straight line. To visualize $a = "a";
$ab = "ab";
$abc = "abc";
will produce issues in the first and second line, while this second example $a = "a";
$ab = "ab";
$abc = "abc";
will produce no issues.
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53 | 2 | $this->lineEnding = $lineEnding; |
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Equals sign not aligned with surrounding assignments; expected 7 spaces but found 1 space
This check looks for multiple assignments in successive lines of code. It will report an issue if the operators are not in a straight line. To visualize $a = "a";
$ab = "ab";
$abc = "abc";
will produce issues in the first and second line, while this second example $a = "a";
$ab = "ab";
$abc = "abc";
will produce no issues.
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54 | 2 | $this->lineEndingLength = strlen($this->lineEnding); |
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55 | 2 | } |
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56 | |||
57 | /** |
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58 | * Inserts the line ending character after each line length characters in |
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59 | * the passed string, making sure previously written bytes are taken into |
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60 | * account. |
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61 | * |
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62 | * @param string $string |
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63 | * @return string |
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64 | */ |
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65 | 2 | private function getChunkedString($string) |
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66 | { |
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67 | 2 | $firstLine = ''; |
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68 | 2 | if ($this->tell() !== 0) { |
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69 | 2 | $next = $this->lineLength - ($this->position % ($this->lineLength + $this->lineEndingLength)); |
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70 | 2 | if (strlen($string) > $next) { |
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71 | 2 | $firstLine = substr($string, 0, $next) . $this->lineEnding; |
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72 | 2 | $string = substr($string, $next); |
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Equals sign not aligned with surrounding assignments; expected 4 spaces but found 1 space
This check looks for multiple assignments in successive lines of code. It will report an issue if the operators are not in a straight line. To visualize $a = "a";
$ab = "ab";
$abc = "abc";
will produce issues in the first and second line, while this second example $a = "a";
$ab = "ab";
$abc = "abc";
will produce no issues.
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73 | } |
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74 | } |
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75 | // chunk_split always ends with the passed line ending |
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76 | 2 | $chunked = $firstLine . chunk_split($string, $this->lineLength, $this->lineEnding); |
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77 | 2 | return substr($chunked, 0, strlen($chunked) - $this->lineEndingLength); |
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78 | } |
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79 | |||
80 | /** |
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81 | * Writes the passed string to the underlying stream, ensuring line endings |
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82 | * are inserted every "line length" characters in the string. |
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83 | * |
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84 | * @param string $string |
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85 | * @return number of bytes written |
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86 | */ |
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87 | 2 | public function write($string) |
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88 | { |
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89 | 2 | $chunked = $this->getChunkedString($string); |
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Equals sign not aligned with surrounding assignments; expected 9 spaces but found 1 space
This check looks for multiple assignments in successive lines of code. It will report an issue if the operators are not in a straight line. To visualize $a = "a";
$ab = "ab";
$abc = "abc";
will produce issues in the first and second line, while this second example $a = "a";
$ab = "ab";
$abc = "abc";
will produce no issues.
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90 | 2 | $this->position += strlen($chunked); |
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91 | 2 | return $this->stream->write($chunked); |
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92 | } |
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93 | |||
94 | /** |
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95 | * Inserts a final line ending character. |
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96 | */ |
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97 | 2 | private function beforeClose() |
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98 | { |
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99 | 2 | if ($this->position !== 0) { |
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100 | 2 | $this->stream->write($this->lineEnding); |
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101 | } |
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102 | 2 | } |
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103 | |||
104 | /** |
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105 | * Closes the stream after ensuring a final line ending character is |
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106 | * inserted. |
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107 | */ |
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108 | 2 | public function close() |
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109 | { |
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110 | 2 | $this->beforeClose(); |
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111 | 2 | $this->stream->close(); |
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112 | 2 | } |
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113 | |||
114 | /** |
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115 | * Detaches the stream after ensuring a final line ending character is |
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116 | * inserted. |
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117 | */ |
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118 | public function detach() |
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119 | { |
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120 | $this->beforeClose(); |
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121 | $this->stream->detach(); |
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122 | } |
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123 | } |
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124 |