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<?php namespace fema\utils; class CharSequence { private $linesBreakIndex; private $chars; private $offset; private $length; private function __construct(array $chars, int $offset, int $length, array $linesBreakIndex) { $this->chars = $chars; $this->offset = $offset; $this->length = $length; $this->linesBreakIndex = $linesBreakIndex; var_dump([$this->toString(), $linesBreakIndex]); if(count($linesBreakIndex) > 0){ echo "line 0"; $this->getLine(0); for($i=0;$i<count($linesBreakIndex); $i++){ echo "line " . ($i+1); $this->getLine($linesBreakIndex[$i]+1); } } } public function length() : int { return $this->length; } public function getLinesCount() : int { return count($this->linesBreakIndex) + 1; } public function getLinesBreakIndex() : int { return $this->linesBreakIndex; } private function getLineBreakIndexIndex(int $charIndex) : int { $arr = $this->linesBreakIndex; $start = 0; $end = count($arr); while($start < $end){ var_dump([$start, $middle, $end]); $middle = ($start + $end) / 2; if($arr[$middle] === $charIndex){ return $middle - 1; }elseif($charIndex > $arr[$middle] && ($middle+1>=count($arr) || $charIndex <= $arr[$middle+1])){ return $middle; }elseif($charIndex < $arr[$middle]){ $end = $middle; }else{ $start = $middle + 1; } } return -1; } public function getLine(int $charIndex) : CharSequence { if($charIndex < 0 || $charIndex >= $this->length) { throw new \InvalidArgumentException("Char index out of bounds [0, $this->length): $charIndex"); } $lineIndexIndex = $this->getLineBreakIndexIndex($charIndex); echo "\n$charIndex => $lineIndexIndex\n"; $start = $lineIndexIndex === -1 ? 0 : $this->linesBreakIndex[$lineIndexIndex]+1; $end = $lineIndexIndex + 1 >= count($this->linesBreakIndex) ? $this->length : $this->linesBreakIndex[$lineIndexIndex+1]; return $this->subCharSequence($start, $end - $start); } public function charAt(int $i) : string { if($i < 0 || $i >= $this->length) { throw new \InvalidArgumentException("Char index out of bounds [0, $this->length): $i"); } else { return $this->chars[$this->offset + $i]; } } public function substring(int $start, ?int $length = null) : string { if($start < 0 || $start >= $this->length) { throw new \InvalidArgumentException("Start out of bounds [0, $this->length): $start"); } elseif($length !== null && $length < 0 || $start + $length > $this->length) { throw new \InvalidArgumentException("Length out of bounds [0, " . ($this->length-$start) . "]: $length"); } else { $ret = ''; for($i = $start; $i<$start+$length; $i++) { $ret .= $this->chars[$this->offset + $i]; } return $ret; } } public function subCharSequence(int $start, ?int $length = null) : CharSequence { if($start < 0 || $start >= $this->length) { throw new \InvalidArgumentException("Start out of bounds [0, $this->length): $start"); } elseif($length !== null && $length < 0 || $start + $length > $this->length) { throw new \InvalidArgumentException("Length out of bounds [0, " . ($this->length-$start) . "]: $length"); } else { if($length === null) { $length = $this->length - $start; } $newLineBreaks = []; $i = $this->getLineBreakIndexIndex($start); if($i === -1 || $this->linesBreakIndex[$i] < $start){ $i++; } for(; $i<count($this->linesBreakIndex) && $this->linesBreakIndex[$i] < $start + $length; $i++){ $newLineBreaks[] = $this->linesBreakIndex[$i] - $start; } return new CharSequence($this->chars, $this->offset + $start, $length, $newLineBreaks); } } public function toString() : string { $ret = ''; for($i = 0; $i < $this->length; $i++){ $ret .= $this->chars[$this->offset + $i]; } return $ret; } public static function getInstance(string $string, bool $normalizeNewLines = false) { $chars = []; $pointer = 0; $length = 0; $linesBreak = []; $prevChar = null; while(($char = static::nextChar($string, $pointer)) !== null) { $realChar = null; if(!$normalizeNewLines) { $realChar = $char; } else { if($char === "\r") { $realChar = "\n"; } elseif($char !== "\n" || $prevChar !== "\r") { $realChar = $char; } } $prevChar = $char; if($realChar !== null) { if($realChar === "\n"){ $linesBreak[] = $length; } $chars[] = $realChar; $length++; } } return new CharSequence($chars, 0, $length, $linesBreak); } private static function nextChar(string $string, int &$pointer) : ?string { if(!isset($string[$pointer])) { return null; } $char = ord($string[$pointer]); if($char < 128){ return $string[$pointer++]; }else{ if($char < 224){ $bytes = 2; }elseif($char < 240){ $bytes = 3; }elseif($char < 248){ $bytes = 4; }elseif($char == 252){ $bytes = 5; }else{ $bytes = 6; } $str = substr($string, $pointer, $bytes); $pointer += $bytes; return $str; } } } echo "Creo stringa originaria\n"; $cs = CharSequence::getInstance("0123456789\n987654321"); echo "\n\nsubstr 10\n"; $cs->subCharSequence(10);

Version	System time (s)	User time (s)	Memory (MiB)
8.3.11	0.016	0.016	20.94
8.3.10	0.019	0.008	24.06
8.3.9	0.012	0.012	26.77
8.3.8	0.007	0.011	17.97
8.3.7	0.017	0.021	16.50
8.3.6	0.034	0.017	16.75
8.3.5	0.029	0.013	21.27
8.3.4	0.010	0.014	18.93
8.3.3	0.016	0.016	18.79
8.3.2	0.043	0.000	20.19
8.3.1	0.012	0.009	21.95
8.3.0	0.008	0.004	17.93
8.2.23	0.003	0.006	22.58
8.2.22	0.000	0.009	37.54
8.2.21	0.017	0.011	26.77
8.2.20	0.011	0.000	16.88
8.2.19	0.013	0.006	16.88
8.2.18	0.028	0.009	16.75
8.2.17	0.008	0.015	22.96
8.2.16	0.019	0.019	21.09
8.2.15	0.006	0.022	24.18
8.2.14	0.004	0.008	24.66
8.2.13	0.011	0.007	22.09
8.2.12	0.018	0.005	26.35
8.2.11	0.009	0.013	22.18
8.2.10	0.007	0.007	17.91
8.2.9	0.004	0.007	17.75
8.2.8	0.007	0.004	18.77
8.2.7	0.008	0.004	17.75
8.2.6	0.003	0.006	17.63
8.2.5	0.006	0.006	17.93
8.2.4	0.003	0.006	18.05
8.2.3	0.000	0.010	19.44
8.2.2	0.003	0.006	18.13
8.2.1	0.004	0.004	18.54
8.2.0	0.004	0.008	18.49
8.1.29	0.009	0.014	18.88
8.1.28	0.015	0.015	25.92
8.1.27	0.012	0.004	23.99
8.1.26	0.022	0.000	26.35
8.1.25	0.018	0.007	28.09
8.1.24	0.006	0.017	23.97
8.1.23	0.017	0.004	19.04
8.1.22	0.009	0.003	17.74
8.1.21	0.003	0.006	18.77
8.1.20	0.011	0.004	17.35
8.1.19	0.003	0.007	17.35
8.1.18	0.006	0.006	18.10
8.1.17	0.006	0.003	17.62
8.1.16	0.003	0.006	19.01
8.1.15	0.011	0.000	21.97
8.1.14	0.004	0.009	19.58
8.1.13	0.003	0.007	19.04
8.1.12	0.003	0.007	17.48
8.1.11	0.008	0.008	17.58
8.1.10	0.000	0.011	17.60
8.1.9	0.004	0.004	17.58
8.1.8	0.000	0.009	17.46
8.1.7	0.010	0.007	17.53
8.1.6	0.000	0.008	17.59
8.1.5	0.015	0.004	17.69
8.1.4	0.003	0.007	17.59
8.1.3	0.007	0.003	17.71
8.1.2	0.011	0.000	17.71
8.1.1	0.000	0.009	17.72
8.1.0	0.000	0.011	17.67
8.0.30	0.003	0.010	19.80
8.0.29	0.010	0.000	16.75
8.0.28	0.010	0.010	18.40
8.0.27	0.003	0.017	17.27
8.0.26	0.003	0.006	19.02
8.0.25	0.013	0.000	17.02
8.0.24	0.003	0.012	17.08
8.0.23	0.004	0.013	16.95
8.0.22	0.003	0.006	16.87
8.0.21	0.010	0.000	16.87
8.0.20	0.009	0.004	16.97
8.0.19	0.000	0.015	17.03
8.0.18	0.003	0.010	16.96
8.0.17	0.009	0.009	16.90
8.0.16	0.007	0.007	17.09
8.0.15	0.003	0.009	16.93
8.0.14	0.016	0.004	16.95
8.0.13	0.008	0.000	13.49
8.0.12	0.009	0.006	16.93
8.0.11	0.007	0.003	16.84
8.0.10	0.004	0.011	16.84
8.0.9	0.005	0.005	16.92
8.0.8	0.028	0.025	16.89
8.0.7	0.010	0.007	16.79
8.0.6	0.003	0.010	16.76
8.0.5	0.009	0.008	16.84
8.0.3	0.044	0.020	17.01
8.0.2	0.046	0.030	17.40
8.0.1	0.004	0.007	16.96
8.0.0	0.028	0.039	17.07
7.4.33	0.010	0.007	15.55
7.4.32	0.008	0.004	16.50
7.4.30	0.003	0.007	16.53
7.4.29	0.013	0.003	16.55
7.4.28	0.012	0.004	16.43
7.4.27	0.007	0.004	16.57
7.4.26	0.012	0.004	16.35
7.4.25	0.009	0.003	16.52
7.4.24	0.003	0.007	16.45
7.4.23	0.004	0.008	16.56
7.4.22	0.023	0.031	16.50
7.4.21	0.020	0.037	16.49
7.4.20	0.003	0.007	16.53
7.4.16	0.038	0.018	16.50
7.4.15	0.029	0.014	17.40
7.4.14	0.059	0.029	17.86
7.4.13	0.034	0.024	16.60
7.4.12	0.036	0.031	16.54
7.4.11	0.060	0.038	16.46
7.4.10	0.078	0.045	16.54
7.4.9	0.028	0.027	16.64
7.4.8	0.045	0.026	19.39
7.4.7	0.098	0.020	16.48
7.4.6	0.030	0.020	16.45
7.4.5	0.014	0.018	16.39
7.4.4	0.061	0.040	16.54
7.4.3	0.017	0.014	16.44
7.4.0	0.011	0.018	15.09
7.3.33	0.014	0.000	13.50
7.3.32	0.013	0.003	13.52
7.3.31	0.006	0.006	16.35
7.3.30	0.011	0.004	16.30
7.3.29	0.020	0.026	16.41
7.3.28	0.026	0.024	16.36
7.3.27	0.042	0.015	17.40
7.3.26	0.052	0.029	16.59
7.3.25	0.047	0.027	16.44
7.3.24	0.042	0.016	16.65
7.3.23	0.051	0.023	16.41
7.3.21	0.040	0.018	16.64
7.3.20	0.023	0.034	16.42
7.3.19	0.026	0.034	16.41
7.3.18	0.016	0.019	16.44
7.3.17	0.083	0.032	16.34
7.3.16	0.068	0.051	16.56
7.2.33	0.043	0.028	16.89
7.2.32	0.035	0.032	16.93
7.2.31	0.028	0.044	16.75
7.2.30	0.028	0.034	16.65
7.2.29	0.028	0.032	16.88
7.2.6	0.014	0.011	16.89
7.2.0	0.003	0.017	19.07
7.1.20	0.007	0.010	15.55
7.1.7	0.009	0.013	16.84
7.1.6	0.017	0.003	17.35
7.1.5	0.017	0.014	17.15
7.1.4	0.023	0.027	34.64
7.1.3	0.027	0.027	34.58
7.1.2	0.020	0.020	34.54
7.1.1	0.010	0.017	16.37
7.1.0	0.010	0.013	16.30
7.0.20	0.006	0.009	16.59
7.0.18	0.003	0.010	16.15
7.0.17	0.007	0.010	15.96
7.0.16	0.007	0.010	15.98
7.0.15	0.007	0.007	15.99
7.0.14	0.013	0.000	16.05
7.0.13	0.013	0.007	16.38
7.0.12	0.007	0.013	16.19
7.0.11	0.007	0.007	16.05
7.0.10	0.010	0.003	16.07
7.0.9	0.000	0.017	16.07
7.0.8	0.007	0.007	16.25
7.0.7	0.000	0.013	16.23
7.0.6	0.003	0.010	15.68
7.0.5	0.003	0.010	16.13
7.0.4	0.003	0.010	16.28
7.0.3	0.003	0.007	16.20
7.0.2	0.007	0.007	15.98
7.0.1	0.003	0.010	16.11
7.0.0	0.000	0.013	16.10

Version

System time (s)

User time (s)

Memory (MiB)

8.3.11

0.016

20.94

8.3.10

0.019

0.008

24.06

8.3.9

0.012

26.77

8.3.8

0.007

0.011

17.97

8.3.7

0.017

0.021

16.50

8.3.6

0.034

0.017

16.75

8.3.5

0.029

0.013

21.27

8.3.4

0.010

0.014

18.93

8.3.3

0.016

18.79

8.3.2

0.043

0.000

20.19

8.3.1

0.012

0.009

21.95

8.3.0

0.008

0.004

17.93

8.2.23

0.003

0.006

22.58

8.2.22

0.000

0.009

37.54

8.2.21

0.017

0.011

26.77

8.2.20

0.011

0.000

16.88

8.2.19

0.013

0.006

16.88

8.2.18

0.028

0.009

16.75

8.2.17

0.008

0.015

22.96

8.2.16

0.019

21.09

8.2.15

0.006

0.022

24.18

8.2.14

0.004

0.008

24.66

8.2.13

0.011

0.007

22.09

8.2.12

0.018

0.005

26.35

8.2.11

0.009

0.013

22.18

8.2.10

0.007

17.91

8.2.9

0.004

0.007

17.75

8.2.8

0.007

0.004

18.77

8.2.7

0.008

0.004

17.75

8.2.6

0.003

0.006

17.63

8.2.5

0.006

17.93

8.2.4

0.003

0.006

18.05

8.2.3

0.000

0.010

19.44

8.2.2

0.003

0.006

18.13

8.2.1

0.004

18.54

8.2.0

0.004

0.008

18.49

8.1.29

0.009

0.014

18.88

8.1.28

0.015

25.92

8.1.27

0.012

0.004

23.99

8.1.26

0.022

0.000

26.35

8.1.25

0.018

0.007

28.09

8.1.24

0.006

0.017

23.97

8.1.23

0.017

0.004

19.04

8.1.22

0.009

0.003

17.74

8.1.21

0.003

0.006

18.77

8.1.20

0.011

0.004

17.35

8.1.19

0.003

0.007

17.35

8.1.18

0.006

18.10

8.1.17

0.006

0.003

17.62

8.1.16

0.003

0.006

19.01

8.1.15

0.011

0.000

21.97

8.1.14

0.004

0.009

19.58

8.1.13

0.003

0.007

19.04

8.1.12

0.003

0.007

17.48

8.1.11

0.008

17.58

8.1.10

0.000

0.011

17.60

8.1.9

0.004

17.58

8.1.8

0.000

0.009

17.46

8.1.7

0.010

0.007

17.53

8.1.6

0.000

0.008

17.59

8.1.5

0.015

0.004

17.69

8.1.4

0.003

0.007

17.59

8.1.3

0.007

0.003

17.71

8.1.2

0.011

0.000

17.71

8.1.1

0.000

0.009

17.72

8.1.0

0.000

0.011

17.67

8.0.30

0.003

0.010

19.80

8.0.29

0.010

0.000

16.75

8.0.28

0.010

18.40

8.0.27

0.003

0.017

17.27

8.0.26

0.003

0.006

19.02

8.0.25

0.013

0.000

17.02

8.0.24

0.003

0.012

17.08

8.0.23

0.004

0.013

16.95

8.0.22

0.003

0.006

16.87

8.0.21

0.010

0.000

16.87

8.0.20

0.009

0.004

16.97

8.0.19

0.000

0.015

17.03

8.0.18

0.003

0.010

16.96

8.0.17

0.009

16.90

8.0.16

0.007

17.09

8.0.15

0.003

0.009

16.93

8.0.14

0.016

0.004

16.95

8.0.13

0.008

0.000

13.49

8.0.12

0.009

0.006

16.93

8.0.11

0.007

0.003

16.84

8.0.10

0.004

0.011

16.84

8.0.9

0.005

16.92

8.0.8

0.028

0.025

16.89

8.0.7

0.010

0.007

16.79

8.0.6

0.003

0.010

16.76

8.0.5

0.009

0.008

16.84

8.0.3

0.044

0.020

17.01

8.0.2

0.046

0.030

17.40

8.0.1

0.004

0.007

16.96

8.0.0

0.028

0.039

17.07

7.4.33

0.010

0.007

15.55

7.4.32

0.008

0.004

16.50

7.4.30

0.003

0.007

16.53

7.4.29

0.013

0.003

16.55

7.4.28

0.012

0.004

16.43

7.4.27

0.007

0.004

16.57

7.4.26

0.012

0.004

16.35

7.4.25

0.009

0.003

16.52

7.4.24

0.003

0.007

16.45

7.4.23

0.004

0.008

16.56

7.4.22

0.023

0.031

16.50

7.4.21

0.020

0.037

16.49

7.4.20

0.003

0.007

16.53

7.4.16

0.038

0.018

16.50

7.4.15

0.029

0.014

17.40

7.4.14

0.059

0.029

17.86

7.4.13

0.034

0.024

16.60

7.4.12

0.036

0.031

16.54

7.4.11

0.060

0.038

16.46

7.4.10

0.078

0.045

16.54

7.4.9

0.028

0.027

16.64

7.4.8

0.045

0.026

19.39

7.4.7

0.098

0.020

16.48

7.4.6

0.030

0.020

16.45

7.4.5

0.014

0.018

16.39

7.4.4

0.061

0.040

16.54

7.4.3

0.017

0.014

16.44

7.4.0

0.011

0.018

15.09

7.3.33

0.014

0.000

13.50

7.3.32

0.013

0.003

13.52

7.3.31

0.006

16.35

7.3.30

0.011

0.004

16.30

7.3.29

0.020

0.026

16.41

7.3.28

0.026

0.024

16.36

7.3.27

0.042

0.015

17.40

7.3.26

0.052

0.029

16.59

7.3.25

0.047

0.027

16.44

7.3.24

0.042

0.016

16.65

7.3.23

0.051

0.023

16.41

7.3.21

0.040

0.018

16.64

7.3.20

0.023

0.034

16.42

7.3.19

0.026

0.034

16.41

7.3.18

0.016

0.019

16.44

7.3.17

0.083

0.032

16.34

7.3.16

0.068

0.051

16.56

7.2.33

0.043

0.028

16.89

7.2.32

0.035

0.032

16.93

7.2.31

0.028

0.044

16.75

7.2.30

0.028

0.034

16.65

7.2.29

0.028

0.032

16.88

7.2.6

0.014

0.011

16.89

7.2.0

0.003

0.017

19.07

7.1.20

0.007

0.010

15.55

7.1.7

0.009

0.013

16.84

7.1.6

0.017

0.003

17.35

7.1.5

0.017

0.014

17.15

7.1.4

0.023

0.027

34.64

7.1.3

0.027

34.58

7.1.2

0.020

34.54

7.1.1

0.010

0.017

16.37

7.1.0

0.010

0.013

16.30

7.0.20

0.006

0.009

16.59

7.0.18

0.003

0.010

16.15

7.0.17

0.007

0.010

15.96

7.0.16

0.007

0.010

15.98

7.0.15

0.007

15.99

7.0.14

0.013

0.000

16.05

7.0.13

0.013

0.007

16.38

7.0.12

0.007

0.013

16.19

7.0.11

0.007

16.05

7.0.10

0.010

0.003

16.07

7.0.9

0.000

0.017

16.07

7.0.8

0.007

16.25

7.0.7

0.000

0.013

16.23

7.0.6

0.003

0.010

15.68

7.0.5

0.003

0.010

16.13

7.0.4

0.003

0.010

16.28

7.0.3

0.003

0.007

16.20

7.0.2

0.007

15.98

7.0.1

0.003

0.010

16.11

7.0.0

0.000

0.013

16.10

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