first commit

This commit is contained in:
Sampanna Rimal
2024-08-27 17:48:06 +05:45
commit 53c0140f58
10839 changed files with 1125847 additions and 0 deletions

124
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<?php declare(strict_types=1);
/*
* This file is part of sebastian/diff.
*
* (c) Sebastian Bergmann <sebastian@phpunit.de>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace SebastianBergmann\Diff;
use ArrayIterator;
use IteratorAggregate;
use Traversable;
/**
* @template-implements IteratorAggregate<int, Line>
*/
final class Chunk implements IteratorAggregate
{
private int $start;
private int $startRange;
private int $end;
private int $endRange;
private array $lines;
public function __construct(int $start = 0, int $startRange = 1, int $end = 0, int $endRange = 1, array $lines = [])
{
$this->start = $start;
$this->startRange = $startRange;
$this->end = $end;
$this->endRange = $endRange;
$this->lines = $lines;
}
public function start(): int
{
return $this->start;
}
public function startRange(): int
{
return $this->startRange;
}
public function end(): int
{
return $this->end;
}
public function endRange(): int
{
return $this->endRange;
}
/**
* @psalm-return list<Line>
*/
public function lines(): array
{
return $this->lines;
}
/**
* @psalm-param list<Line> $lines
*/
public function setLines(array $lines): void
{
foreach ($lines as $line) {
if (!$line instanceof Line) {
throw new InvalidArgumentException;
}
}
$this->lines = $lines;
}
/**
* @deprecated Use start() instead
*/
public function getStart(): int
{
return $this->start;
}
/**
* @deprecated Use startRange() instead
*/
public function getStartRange(): int
{
return $this->startRange;
}
/**
* @deprecated Use end() instead
*/
public function getEnd(): int
{
return $this->end;
}
/**
* @deprecated Use endRange() instead
*/
public function getEndRange(): int
{
return $this->endRange;
}
/**
* @psalm-return list<Line>
*
* @deprecated Use lines() instead
*/
public function getLines(): array
{
return $this->lines;
}
public function getIterator(): Traversable
{
return new ArrayIterator($this->lines);
}
}

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vendor/sebastian/diff/src/Diff.php vendored Normal file
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<?php declare(strict_types=1);
/*
* This file is part of sebastian/diff.
*
* (c) Sebastian Bergmann <sebastian@phpunit.de>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace SebastianBergmann\Diff;
use ArrayIterator;
use IteratorAggregate;
use Traversable;
/**
* @template-implements IteratorAggregate<int, Chunk>
*/
final class Diff implements IteratorAggregate
{
/**
* @psalm-var non-empty-string
*/
private string $from;
/**
* @psalm-var non-empty-string
*/
private string $to;
/**
* @psalm-var list<Chunk>
*/
private array $chunks;
/**
* @psalm-param non-empty-string $from
* @psalm-param non-empty-string $to
* @psalm-param list<Chunk> $chunks
*/
public function __construct(string $from, string $to, array $chunks = [])
{
$this->from = $from;
$this->to = $to;
$this->chunks = $chunks;
}
/**
* @psalm-return non-empty-string
*/
public function from(): string
{
return $this->from;
}
/**
* @psalm-return non-empty-string
*/
public function to(): string
{
return $this->to;
}
/**
* @psalm-return list<Chunk>
*/
public function chunks(): array
{
return $this->chunks;
}
/**
* @psalm-param list<Chunk> $chunks
*/
public function setChunks(array $chunks): void
{
$this->chunks = $chunks;
}
/**
* @psalm-return non-empty-string
*
* @deprecated
*/
public function getFrom(): string
{
return $this->from;
}
/**
* @psalm-return non-empty-string
*
* @deprecated
*/
public function getTo(): string
{
return $this->to;
}
/**
* @psalm-return list<Chunk>
*
* @deprecated
*/
public function getChunks(): array
{
return $this->chunks;
}
public function getIterator(): Traversable
{
return new ArrayIterator($this->chunks);
}
}

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vendor/sebastian/diff/src/Differ.php vendored Normal file
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<?php declare(strict_types=1);
/*
* This file is part of sebastian/diff.
*
* (c) Sebastian Bergmann <sebastian@phpunit.de>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace SebastianBergmann\Diff;
use const PHP_INT_SIZE;
use const PREG_SPLIT_DELIM_CAPTURE;
use const PREG_SPLIT_NO_EMPTY;
use function array_shift;
use function array_unshift;
use function array_values;
use function count;
use function current;
use function end;
use function is_string;
use function key;
use function min;
use function preg_split;
use function prev;
use function reset;
use function str_ends_with;
use function substr;
use SebastianBergmann\Diff\Output\DiffOutputBuilderInterface;
final class Differ
{
public const OLD = 0;
public const ADDED = 1;
public const REMOVED = 2;
public const DIFF_LINE_END_WARNING = 3;
public const NO_LINE_END_EOF_WARNING = 4;
private DiffOutputBuilderInterface $outputBuilder;
public function __construct(DiffOutputBuilderInterface $outputBuilder)
{
$this->outputBuilder = $outputBuilder;
}
public function diff(array|string $from, array|string $to, ?LongestCommonSubsequenceCalculator $lcs = null): string
{
$diff = $this->diffToArray($from, $to, $lcs);
return $this->outputBuilder->getDiff($diff);
}
public function diffToArray(array|string $from, array|string $to, ?LongestCommonSubsequenceCalculator $lcs = null): array
{
if (is_string($from)) {
$from = $this->splitStringByLines($from);
}
if (is_string($to)) {
$to = $this->splitStringByLines($to);
}
[$from, $to, $start, $end] = self::getArrayDiffParted($from, $to);
if ($lcs === null) {
$lcs = $this->selectLcsImplementation($from, $to);
}
$common = $lcs->calculate(array_values($from), array_values($to));
$diff = [];
foreach ($start as $token) {
$diff[] = [$token, self::OLD];
}
reset($from);
reset($to);
foreach ($common as $token) {
while (($fromToken = reset($from)) !== $token) {
$diff[] = [array_shift($from), self::REMOVED];
}
while (($toToken = reset($to)) !== $token) {
$diff[] = [array_shift($to), self::ADDED];
}
$diff[] = [$token, self::OLD];
array_shift($from);
array_shift($to);
}
while (($token = array_shift($from)) !== null) {
$diff[] = [$token, self::REMOVED];
}
while (($token = array_shift($to)) !== null) {
$diff[] = [$token, self::ADDED];
}
foreach ($end as $token) {
$diff[] = [$token, self::OLD];
}
if ($this->detectUnmatchedLineEndings($diff)) {
array_unshift($diff, ["#Warning: Strings contain different line endings!\n", self::DIFF_LINE_END_WARNING]);
}
return $diff;
}
private function splitStringByLines(string $input): array
{
return preg_split('/(.*\R)/', $input, -1, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY);
}
private function selectLcsImplementation(array $from, array $to): LongestCommonSubsequenceCalculator
{
// We do not want to use the time-efficient implementation if its memory
// footprint will probably exceed this value. Note that the footprint
// calculation is only an estimation for the matrix and the LCS method
// will typically allocate a bit more memory than this.
$memoryLimit = 100 * 1024 * 1024;
if ($this->calculateEstimatedFootprint($from, $to) > $memoryLimit) {
return new MemoryEfficientLongestCommonSubsequenceCalculator;
}
return new TimeEfficientLongestCommonSubsequenceCalculator;
}
private function calculateEstimatedFootprint(array $from, array $to): float|int
{
$itemSize = PHP_INT_SIZE === 4 ? 76 : 144;
return $itemSize * min(count($from), count($to)) ** 2;
}
private function detectUnmatchedLineEndings(array $diff): bool
{
$newLineBreaks = ['' => true];
$oldLineBreaks = ['' => true];
foreach ($diff as $entry) {
if (self::OLD === $entry[1]) {
$ln = $this->getLinebreak($entry[0]);
$oldLineBreaks[$ln] = true;
$newLineBreaks[$ln] = true;
} elseif (self::ADDED === $entry[1]) {
$newLineBreaks[$this->getLinebreak($entry[0])] = true;
} elseif (self::REMOVED === $entry[1]) {
$oldLineBreaks[$this->getLinebreak($entry[0])] = true;
}
}
// if either input or output is a single line without breaks than no warning should be raised
if (['' => true] === $newLineBreaks || ['' => true] === $oldLineBreaks) {
return false;
}
// two-way compare
foreach ($newLineBreaks as $break => $set) {
if (!isset($oldLineBreaks[$break])) {
return true;
}
}
foreach ($oldLineBreaks as $break => $set) {
if (!isset($newLineBreaks[$break])) {
return true;
}
}
return false;
}
private function getLinebreak($line): string
{
if (!is_string($line)) {
return '';
}
$lc = substr($line, -1);
if ("\r" === $lc) {
return "\r";
}
if ("\n" !== $lc) {
return '';
}
if (str_ends_with($line, "\r\n")) {
return "\r\n";
}
return "\n";
}
private static function getArrayDiffParted(array &$from, array &$to): array
{
$start = [];
$end = [];
reset($to);
foreach ($from as $k => $v) {
$toK = key($to);
if ($toK === $k && $v === $to[$k]) {
$start[$k] = $v;
unset($from[$k], $to[$k]);
} else {
break;
}
}
end($from);
end($to);
do {
$fromK = key($from);
$toK = key($to);
if (null === $fromK || null === $toK || current($from) !== current($to)) {
break;
}
prev($from);
prev($to);
$end = [$fromK => $from[$fromK]] + $end;
unset($from[$fromK], $to[$toK]);
} while (true);
return [$from, $to, $start, $end];
}
}

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<?php declare(strict_types=1);
/*
* This file is part of sebastian/diff.
*
* (c) Sebastian Bergmann <sebastian@phpunit.de>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace SebastianBergmann\Diff;
use function gettype;
use function is_object;
use function sprintf;
use Exception;
final class ConfigurationException extends InvalidArgumentException
{
public function __construct(
string $option,
string $expected,
$value,
int $code = 0,
?Exception $previous = null
) {
parent::__construct(
sprintf(
'Option "%s" must be %s, got "%s".',
$option,
$expected,
is_object($value) ? $value::class : (null === $value ? '<null>' : gettype($value) . '#' . $value),
),
$code,
$previous,
);
}
}

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<?php declare(strict_types=1);
/*
* This file is part of sebastian/diff.
*
* (c) Sebastian Bergmann <sebastian@phpunit.de>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace SebastianBergmann\Diff;
use Throwable;
interface Exception extends Throwable
{
}

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<?php declare(strict_types=1);
/*
* This file is part of sebastian/diff.
*
* (c) Sebastian Bergmann <sebastian@phpunit.de>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace SebastianBergmann\Diff;
class InvalidArgumentException extends \InvalidArgumentException implements Exception
{
}

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<?php declare(strict_types=1);
/*
* This file is part of sebastian/diff.
*
* (c) Sebastian Bergmann <sebastian@phpunit.de>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace SebastianBergmann\Diff;
final class Line
{
public const ADDED = 1;
public const REMOVED = 2;
public const UNCHANGED = 3;
private int $type;
private string $content;
public function __construct(int $type = self::UNCHANGED, string $content = '')
{
$this->type = $type;
$this->content = $content;
}
public function content(): string
{
return $this->content;
}
public function type(): int
{
return $this->type;
}
public function isAdded(): bool
{
return $this->type === self::ADDED;
}
public function isRemoved(): bool
{
return $this->type === self::REMOVED;
}
public function isUnchanged(): bool
{
return $this->type === self::UNCHANGED;
}
/**
* @deprecated
*/
public function getContent(): string
{
return $this->content;
}
/**
* @deprecated
*/
public function getType(): int
{
return $this->type;
}
}

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<?php declare(strict_types=1);
/*
* This file is part of sebastian/diff.
*
* (c) Sebastian Bergmann <sebastian@phpunit.de>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace SebastianBergmann\Diff;
interface LongestCommonSubsequenceCalculator
{
/**
* Calculates the longest common subsequence of two arrays.
*/
public function calculate(array $from, array $to): array;
}

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<?php declare(strict_types=1);
/*
* This file is part of sebastian/diff.
*
* (c) Sebastian Bergmann <sebastian@phpunit.de>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace SebastianBergmann\Diff;
use function array_fill;
use function array_merge;
use function array_reverse;
use function array_slice;
use function count;
use function in_array;
use function max;
final class MemoryEfficientLongestCommonSubsequenceCalculator implements LongestCommonSubsequenceCalculator
{
/**
* @inheritDoc
*/
public function calculate(array $from, array $to): array
{
$cFrom = count($from);
$cTo = count($to);
if ($cFrom === 0) {
return [];
}
if ($cFrom === 1) {
if (in_array($from[0], $to, true)) {
return [$from[0]];
}
return [];
}
$i = (int) ($cFrom / 2);
$fromStart = array_slice($from, 0, $i);
$fromEnd = array_slice($from, $i);
$llB = $this->length($fromStart, $to);
$llE = $this->length(array_reverse($fromEnd), array_reverse($to));
$jMax = 0;
$max = 0;
for ($j = 0; $j <= $cTo; $j++) {
$m = $llB[$j] + $llE[$cTo - $j];
if ($m >= $max) {
$max = $m;
$jMax = $j;
}
}
$toStart = array_slice($to, 0, $jMax);
$toEnd = array_slice($to, $jMax);
return array_merge(
$this->calculate($fromStart, $toStart),
$this->calculate($fromEnd, $toEnd),
);
}
private function length(array $from, array $to): array
{
$current = array_fill(0, count($to) + 1, 0);
$cFrom = count($from);
$cTo = count($to);
for ($i = 0; $i < $cFrom; $i++) {
$prev = $current;
for ($j = 0; $j < $cTo; $j++) {
if ($from[$i] === $to[$j]) {
$current[$j + 1] = $prev[$j] + 1;
} else {
/**
* @noinspection PhpConditionCanBeReplacedWithMinMaxCallInspection
*
* We do not use max() here to avoid the function call overhead
*/
if ($current[$j] > $prev[$j + 1]) {
$current[$j + 1] = $current[$j];
} else {
$current[$j + 1] = $prev[$j + 1];
}
}
}
}
return $current;
}
}

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<?php declare(strict_types=1);
/*
* This file is part of sebastian/diff.
*
* (c) Sebastian Bergmann <sebastian@phpunit.de>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace SebastianBergmann\Diff\Output;
use function count;
abstract class AbstractChunkOutputBuilder implements DiffOutputBuilderInterface
{
/**
* Takes input of the diff array and returns the common parts.
* Iterates through diff line by line.
*/
protected function getCommonChunks(array $diff, int $lineThreshold = 5): array
{
$diffSize = count($diff);
$capturing = false;
$chunkStart = 0;
$chunkSize = 0;
$commonChunks = [];
for ($i = 0; $i < $diffSize; $i++) {
if ($diff[$i][1] === 0 /* OLD */) {
if ($capturing === false) {
$capturing = true;
$chunkStart = $i;
$chunkSize = 0;
} else {
$chunkSize++;
}
} elseif ($capturing !== false) {
if ($chunkSize >= $lineThreshold) {
$commonChunks[$chunkStart] = $chunkStart + $chunkSize;
}
$capturing = false;
}
}
if ($capturing !== false && $chunkSize >= $lineThreshold) {
$commonChunks[$chunkStart] = $chunkStart + $chunkSize;
}
return $commonChunks;
}
}

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<?php declare(strict_types=1);
/*
* This file is part of sebastian/diff.
*
* (c) Sebastian Bergmann <sebastian@phpunit.de>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace SebastianBergmann\Diff\Output;
use function fclose;
use function fopen;
use function fwrite;
use function str_ends_with;
use function stream_get_contents;
use function substr;
use SebastianBergmann\Diff\Differ;
/**
* Builds a diff string representation in a loose unified diff format
* listing only changes lines. Does not include line numbers.
*/
final class DiffOnlyOutputBuilder implements DiffOutputBuilderInterface
{
private string $header;
public function __construct(string $header = "--- Original\n+++ New\n")
{
$this->header = $header;
}
public function getDiff(array $diff): string
{
$buffer = fopen('php://memory', 'r+b');
if ('' !== $this->header) {
fwrite($buffer, $this->header);
if (!str_ends_with($this->header, "\n")) {
fwrite($buffer, "\n");
}
}
foreach ($diff as $diffEntry) {
if ($diffEntry[1] === Differ::ADDED) {
fwrite($buffer, '+' . $diffEntry[0]);
} elseif ($diffEntry[1] === Differ::REMOVED) {
fwrite($buffer, '-' . $diffEntry[0]);
} elseif ($diffEntry[1] === Differ::DIFF_LINE_END_WARNING) {
fwrite($buffer, ' ' . $diffEntry[0]);
continue; // Warnings should not be tested for line break, it will always be there
} else { /* Not changed (old) 0 */
continue; // we didn't write the not-changed line, so do not add a line break either
}
$lc = substr($diffEntry[0], -1);
if ($lc !== "\n" && $lc !== "\r") {
fwrite($buffer, "\n"); // \No newline at end of file
}
}
$diff = stream_get_contents($buffer, -1, 0);
fclose($buffer);
return $diff;
}
}

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<?php declare(strict_types=1);
/*
* This file is part of sebastian/diff.
*
* (c) Sebastian Bergmann <sebastian@phpunit.de>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace SebastianBergmann\Diff\Output;
/**
* Defines how an output builder should take a generated
* diff array and return a string representation of that diff.
*/
interface DiffOutputBuilderInterface
{
public function getDiff(array $diff): string;
}

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<?php declare(strict_types=1);
/*
* This file is part of sebastian/diff.
*
* (c) Sebastian Bergmann <sebastian@phpunit.de>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace SebastianBergmann\Diff\Output;
use function array_merge;
use function array_splice;
use function count;
use function fclose;
use function fopen;
use function fwrite;
use function is_bool;
use function is_int;
use function is_string;
use function max;
use function min;
use function sprintf;
use function stream_get_contents;
use function substr;
use SebastianBergmann\Diff\ConfigurationException;
use SebastianBergmann\Diff\Differ;
/**
* Strict Unified diff output builder.
*
* Generates (strict) Unified diff's (unidiffs) with hunks.
*/
final class StrictUnifiedDiffOutputBuilder implements DiffOutputBuilderInterface
{
private static array $default = [
'collapseRanges' => true, // ranges of length one are rendered with the trailing `,1`
'commonLineThreshold' => 6, // number of same lines before ending a new hunk and creating a new one (if needed)
'contextLines' => 3, // like `diff: -u, -U NUM, --unified[=NUM]`, for patch/git apply compatibility best to keep at least @ 3
'fromFile' => null,
'fromFileDate' => null,
'toFile' => null,
'toFileDate' => null,
];
private bool $changed;
private bool $collapseRanges;
/**
* @psalm-var positive-int
*/
private int $commonLineThreshold;
private string $header;
/**
* @psalm-var positive-int
*/
private int $contextLines;
public function __construct(array $options = [])
{
$options = array_merge(self::$default, $options);
if (!is_bool($options['collapseRanges'])) {
throw new ConfigurationException('collapseRanges', 'a bool', $options['collapseRanges']);
}
if (!is_int($options['contextLines']) || $options['contextLines'] < 0) {
throw new ConfigurationException('contextLines', 'an int >= 0', $options['contextLines']);
}
if (!is_int($options['commonLineThreshold']) || $options['commonLineThreshold'] <= 0) {
throw new ConfigurationException('commonLineThreshold', 'an int > 0', $options['commonLineThreshold']);
}
$this->assertString($options, 'fromFile');
$this->assertString($options, 'toFile');
$this->assertStringOrNull($options, 'fromFileDate');
$this->assertStringOrNull($options, 'toFileDate');
$this->header = sprintf(
"--- %s%s\n+++ %s%s\n",
$options['fromFile'],
null === $options['fromFileDate'] ? '' : "\t" . $options['fromFileDate'],
$options['toFile'],
null === $options['toFileDate'] ? '' : "\t" . $options['toFileDate'],
);
$this->collapseRanges = $options['collapseRanges'];
$this->commonLineThreshold = $options['commonLineThreshold'];
$this->contextLines = $options['contextLines'];
}
public function getDiff(array $diff): string
{
if (0 === count($diff)) {
return '';
}
$this->changed = false;
$buffer = fopen('php://memory', 'r+b');
fwrite($buffer, $this->header);
$this->writeDiffHunks($buffer, $diff);
if (!$this->changed) {
fclose($buffer);
return '';
}
$diff = stream_get_contents($buffer, -1, 0);
fclose($buffer);
// If the last char is not a linebreak: add it.
// This might happen when both the `from` and `to` do not have a trailing linebreak
$last = substr($diff, -1);
return "\n" !== $last && "\r" !== $last
? $diff . "\n"
: $diff;
}
private function writeDiffHunks($output, array $diff): void
{
// detect "No newline at end of file" and insert into `$diff` if needed
$upperLimit = count($diff);
if (0 === $diff[$upperLimit - 1][1]) {
$lc = substr($diff[$upperLimit - 1][0], -1);
if ("\n" !== $lc) {
array_splice($diff, $upperLimit, 0, [["\n\\ No newline at end of file\n", Differ::NO_LINE_END_EOF_WARNING]]);
}
} else {
// search back for the last `+` and `-` line,
// check if it has a trailing linebreak, else add a warning under it
$toFind = [1 => true, 2 => true];
for ($i = $upperLimit - 1; $i >= 0; $i--) {
if (isset($toFind[$diff[$i][1]])) {
unset($toFind[$diff[$i][1]]);
$lc = substr($diff[$i][0], -1);
if ("\n" !== $lc) {
array_splice($diff, $i + 1, 0, [["\n\\ No newline at end of file\n", Differ::NO_LINE_END_EOF_WARNING]]);
}
if (!count($toFind)) {
break;
}
}
}
}
// write hunks to output buffer
$cutOff = max($this->commonLineThreshold, $this->contextLines);
$hunkCapture = false;
$sameCount = $toRange = $fromRange = 0;
$toStart = $fromStart = 1;
$i = 0;
/** @var int $i */
foreach ($diff as $i => $entry) {
if (0 === $entry[1]) { // same
if (false === $hunkCapture) {
$fromStart++;
$toStart++;
continue;
}
$sameCount++;
$toRange++;
$fromRange++;
if ($sameCount === $cutOff) {
$contextStartOffset = ($hunkCapture - $this->contextLines) < 0
? $hunkCapture
: $this->contextLines;
// note: $contextEndOffset = $this->contextLines;
//
// because we never go beyond the end of the diff.
// with the cutoff/contextlines here the follow is never true;
//
// if ($i - $cutOff + $this->contextLines + 1 > \count($diff)) {
// $contextEndOffset = count($diff) - 1;
// }
//
// ; that would be true for a trailing incomplete hunk case which is dealt with after this loop
$this->writeHunk(
$diff,
$hunkCapture - $contextStartOffset,
$i - $cutOff + $this->contextLines + 1,
$fromStart - $contextStartOffset,
$fromRange - $cutOff + $contextStartOffset + $this->contextLines,
$toStart - $contextStartOffset,
$toRange - $cutOff + $contextStartOffset + $this->contextLines,
$output,
);
$fromStart += $fromRange;
$toStart += $toRange;
$hunkCapture = false;
$sameCount = $toRange = $fromRange = 0;
}
continue;
}
$sameCount = 0;
if ($entry[1] === Differ::NO_LINE_END_EOF_WARNING) {
continue;
}
$this->changed = true;
if (false === $hunkCapture) {
$hunkCapture = $i;
}
if (Differ::ADDED === $entry[1]) { // added
$toRange++;
}
if (Differ::REMOVED === $entry[1]) { // removed
$fromRange++;
}
}
if (false === $hunkCapture) {
return;
}
// we end here when cutoff (commonLineThreshold) was not reached, but we were capturing a hunk,
// do not render hunk till end automatically because the number of context lines might be less than the commonLineThreshold
$contextStartOffset = $hunkCapture - $this->contextLines < 0
? $hunkCapture
: $this->contextLines;
// prevent trying to write out more common lines than there are in the diff _and_
// do not write more than configured through the context lines
$contextEndOffset = min($sameCount, $this->contextLines);
$fromRange -= $sameCount;
$toRange -= $sameCount;
$this->writeHunk(
$diff,
$hunkCapture - $contextStartOffset,
$i - $sameCount + $contextEndOffset + 1,
$fromStart - $contextStartOffset,
$fromRange + $contextStartOffset + $contextEndOffset,
$toStart - $contextStartOffset,
$toRange + $contextStartOffset + $contextEndOffset,
$output,
);
}
private function writeHunk(
array $diff,
int $diffStartIndex,
int $diffEndIndex,
int $fromStart,
int $fromRange,
int $toStart,
int $toRange,
$output
): void {
fwrite($output, '@@ -' . $fromStart);
if (!$this->collapseRanges || 1 !== $fromRange) {
fwrite($output, ',' . $fromRange);
}
fwrite($output, ' +' . $toStart);
if (!$this->collapseRanges || 1 !== $toRange) {
fwrite($output, ',' . $toRange);
}
fwrite($output, " @@\n");
for ($i = $diffStartIndex; $i < $diffEndIndex; $i++) {
if ($diff[$i][1] === Differ::ADDED) {
$this->changed = true;
fwrite($output, '+' . $diff[$i][0]);
} elseif ($diff[$i][1] === Differ::REMOVED) {
$this->changed = true;
fwrite($output, '-' . $diff[$i][0]);
} elseif ($diff[$i][1] === Differ::OLD) {
fwrite($output, ' ' . $diff[$i][0]);
} elseif ($diff[$i][1] === Differ::NO_LINE_END_EOF_WARNING) {
$this->changed = true;
fwrite($output, $diff[$i][0]);
}
// } elseif ($diff[$i][1] === Differ::DIFF_LINE_END_WARNING) { // custom comment inserted by PHPUnit/diff package
// skip
// } else {
// unknown/invalid
// }
}
}
private function assertString(array $options, string $option): void
{
if (!is_string($options[$option])) {
throw new ConfigurationException($option, 'a string', $options[$option]);
}
}
private function assertStringOrNull(array $options, string $option): void
{
if (null !== $options[$option] && !is_string($options[$option])) {
throw new ConfigurationException($option, 'a string or <null>', $options[$option]);
}
}
}

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<?php declare(strict_types=1);
/*
* This file is part of sebastian/diff.
*
* (c) Sebastian Bergmann <sebastian@phpunit.de>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace SebastianBergmann\Diff\Output;
use function array_splice;
use function count;
use function fclose;
use function fopen;
use function fwrite;
use function max;
use function min;
use function str_ends_with;
use function stream_get_contents;
use function substr;
use SebastianBergmann\Diff\Differ;
/**
* Builds a diff string representation in unified diff format in chunks.
*/
final class UnifiedDiffOutputBuilder extends AbstractChunkOutputBuilder
{
private bool $collapseRanges = true;
private int $commonLineThreshold = 6;
/**
* @psalm-var positive-int
*/
private int $contextLines = 3;
private string $header;
private bool $addLineNumbers;
public function __construct(string $header = "--- Original\n+++ New\n", bool $addLineNumbers = false)
{
$this->header = $header;
$this->addLineNumbers = $addLineNumbers;
}
public function getDiff(array $diff): string
{
$buffer = fopen('php://memory', 'r+b');
if ('' !== $this->header) {
fwrite($buffer, $this->header);
if (!str_ends_with($this->header, "\n")) {
fwrite($buffer, "\n");
}
}
if (0 !== count($diff)) {
$this->writeDiffHunks($buffer, $diff);
}
$diff = stream_get_contents($buffer, -1, 0);
fclose($buffer);
// If the diff is non-empty and last char is not a linebreak: add it.
// This might happen when both the `from` and `to` do not have a trailing linebreak
$last = substr($diff, -1);
return '' !== $diff && "\n" !== $last && "\r" !== $last
? $diff . "\n"
: $diff;
}
private function writeDiffHunks($output, array $diff): void
{
// detect "No newline at end of file" and insert into `$diff` if needed
$upperLimit = count($diff);
if (0 === $diff[$upperLimit - 1][1]) {
$lc = substr($diff[$upperLimit - 1][0], -1);
if ("\n" !== $lc) {
array_splice($diff, $upperLimit, 0, [["\n\\ No newline at end of file\n", Differ::NO_LINE_END_EOF_WARNING]]);
}
} else {
// search back for the last `+` and `-` line,
// check if it has trailing linebreak, else add a warning under it
$toFind = [1 => true, 2 => true];
for ($i = $upperLimit - 1; $i >= 0; $i--) {
if (isset($toFind[$diff[$i][1]])) {
unset($toFind[$diff[$i][1]]);
$lc = substr($diff[$i][0], -1);
if ("\n" !== $lc) {
array_splice($diff, $i + 1, 0, [["\n\\ No newline at end of file\n", Differ::NO_LINE_END_EOF_WARNING]]);
}
if (!count($toFind)) {
break;
}
}
}
}
// write hunks to output buffer
$cutOff = max($this->commonLineThreshold, $this->contextLines);
$hunkCapture = false;
$sameCount = $toRange = $fromRange = 0;
$toStart = $fromStart = 1;
$i = 0;
/** @var int $i */
foreach ($diff as $i => $entry) {
if (0 === $entry[1]) { // same
if (false === $hunkCapture) {
$fromStart++;
$toStart++;
continue;
}
$sameCount++;
$toRange++;
$fromRange++;
if ($sameCount === $cutOff) {
$contextStartOffset = ($hunkCapture - $this->contextLines) < 0
? $hunkCapture
: $this->contextLines;
// note: $contextEndOffset = $this->contextLines;
//
// because we never go beyond the end of the diff.
// with the cutoff/contextlines here the follow is never true;
//
// if ($i - $cutOff + $this->contextLines + 1 > \count($diff)) {
// $contextEndOffset = count($diff) - 1;
// }
//
// ; that would be true for a trailing incomplete hunk case which is dealt with after this loop
$this->writeHunk(
$diff,
$hunkCapture - $contextStartOffset,
$i - $cutOff + $this->contextLines + 1,
$fromStart - $contextStartOffset,
$fromRange - $cutOff + $contextStartOffset + $this->contextLines,
$toStart - $contextStartOffset,
$toRange - $cutOff + $contextStartOffset + $this->contextLines,
$output,
);
$fromStart += $fromRange;
$toStart += $toRange;
$hunkCapture = false;
$sameCount = $toRange = $fromRange = 0;
}
continue;
}
$sameCount = 0;
if ($entry[1] === Differ::NO_LINE_END_EOF_WARNING) {
continue;
}
if (false === $hunkCapture) {
$hunkCapture = $i;
}
if (Differ::ADDED === $entry[1]) {
$toRange++;
}
if (Differ::REMOVED === $entry[1]) {
$fromRange++;
}
}
if (false === $hunkCapture) {
return;
}
// we end here when cutoff (commonLineThreshold) was not reached, but we were capturing a hunk,
// do not render hunk till end automatically because the number of context lines might be less than the commonLineThreshold
$contextStartOffset = $hunkCapture - $this->contextLines < 0
? $hunkCapture
: $this->contextLines;
// prevent trying to write out more common lines than there are in the diff _and_
// do not write more than configured through the context lines
$contextEndOffset = min($sameCount, $this->contextLines);
$fromRange -= $sameCount;
$toRange -= $sameCount;
$this->writeHunk(
$diff,
$hunkCapture - $contextStartOffset,
$i - $sameCount + $contextEndOffset + 1,
$fromStart - $contextStartOffset,
$fromRange + $contextStartOffset + $contextEndOffset,
$toStart - $contextStartOffset,
$toRange + $contextStartOffset + $contextEndOffset,
$output,
);
}
private function writeHunk(
array $diff,
int $diffStartIndex,
int $diffEndIndex,
int $fromStart,
int $fromRange,
int $toStart,
int $toRange,
$output
): void {
if ($this->addLineNumbers) {
fwrite($output, '@@ -' . $fromStart);
if (!$this->collapseRanges || 1 !== $fromRange) {
fwrite($output, ',' . $fromRange);
}
fwrite($output, ' +' . $toStart);
if (!$this->collapseRanges || 1 !== $toRange) {
fwrite($output, ',' . $toRange);
}
fwrite($output, " @@\n");
} else {
fwrite($output, "@@ @@\n");
}
for ($i = $diffStartIndex; $i < $diffEndIndex; $i++) {
if ($diff[$i][1] === Differ::ADDED) {
fwrite($output, '+' . $diff[$i][0]);
} elseif ($diff[$i][1] === Differ::REMOVED) {
fwrite($output, '-' . $diff[$i][0]);
} elseif ($diff[$i][1] === Differ::OLD) {
fwrite($output, ' ' . $diff[$i][0]);
} elseif ($diff[$i][1] === Differ::NO_LINE_END_EOF_WARNING) {
fwrite($output, "\n"); // $diff[$i][0]
} else { /* Not changed (old) Differ::OLD or Warning Differ::DIFF_LINE_END_WARNING */
fwrite($output, ' ' . $diff[$i][0]);
}
}
}
}

112
vendor/sebastian/diff/src/Parser.php vendored Normal file
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<?php declare(strict_types=1);
/*
* This file is part of sebastian/diff.
*
* (c) Sebastian Bergmann <sebastian@phpunit.de>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace SebastianBergmann\Diff;
use function array_pop;
use function assert;
use function count;
use function max;
use function preg_match;
use function preg_split;
/**
* Unified diff parser.
*/
final class Parser
{
/**
* @return Diff[]
*/
public function parse(string $string): array
{
$lines = preg_split('(\r\n|\r|\n)', $string);
if (!empty($lines) && $lines[count($lines) - 1] === '') {
array_pop($lines);
}
$lineCount = count($lines);
$diffs = [];
$diff = null;
$collected = [];
for ($i = 0; $i < $lineCount; $i++) {
if (preg_match('#^---\h+"?(?P<file>[^\\v\\t"]+)#', $lines[$i], $fromMatch) &&
preg_match('#^\\+\\+\\+\\h+"?(?P<file>[^\\v\\t"]+)#', $lines[$i + 1], $toMatch)) {
if ($diff !== null) {
$this->parseFileDiff($diff, $collected);
$diffs[] = $diff;
$collected = [];
}
assert(!empty($fromMatch['file']));
assert(!empty($toMatch['file']));
$diff = new Diff($fromMatch['file'], $toMatch['file']);
$i++;
} else {
if (preg_match('/^(?:diff --git |index [\da-f.]+|[+-]{3} [ab])/', $lines[$i])) {
continue;
}
$collected[] = $lines[$i];
}
}
if ($diff !== null && count($collected)) {
$this->parseFileDiff($diff, $collected);
$diffs[] = $diff;
}
return $diffs;
}
private function parseFileDiff(Diff $diff, array $lines): void
{
$chunks = [];
$chunk = null;
$diffLines = [];
foreach ($lines as $line) {
if (preg_match('/^@@\s+-(?P<start>\d+)(?:,\s*(?P<startrange>\d+))?\s+\+(?P<end>\d+)(?:,\s*(?P<endrange>\d+))?\s+@@/', $line, $match, PREG_UNMATCHED_AS_NULL)) {
$chunk = new Chunk(
(int) $match['start'],
isset($match['startrange']) ? max(0, (int) $match['startrange']) : 1,
(int) $match['end'],
isset($match['endrange']) ? max(0, (int) $match['endrange']) : 1,
);
$chunks[] = $chunk;
$diffLines = [];
continue;
}
if (preg_match('/^(?P<type>[+ -])?(?P<line>.*)/', $line, $match)) {
$type = Line::UNCHANGED;
if ($match['type'] === '+') {
$type = Line::ADDED;
} elseif ($match['type'] === '-') {
$type = Line::REMOVED;
}
$diffLines[] = new Line($type, $match['line']);
$chunk?->setLines($diffLines);
}
}
$diff->setChunks($chunks);
}
}

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<?php declare(strict_types=1);
/*
* This file is part of sebastian/diff.
*
* (c) Sebastian Bergmann <sebastian@phpunit.de>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace SebastianBergmann\Diff;
use function array_reverse;
use function count;
use function max;
use SplFixedArray;
final class TimeEfficientLongestCommonSubsequenceCalculator implements LongestCommonSubsequenceCalculator
{
/**
* @inheritDoc
*/
public function calculate(array $from, array $to): array
{
$common = [];
$fromLength = count($from);
$toLength = count($to);
$width = $fromLength + 1;
$matrix = new SplFixedArray($width * ($toLength + 1));
for ($i = 0; $i <= $fromLength; $i++) {
$matrix[$i] = 0;
}
for ($j = 0; $j <= $toLength; $j++) {
$matrix[$j * $width] = 0;
}
for ($i = 1; $i <= $fromLength; $i++) {
for ($j = 1; $j <= $toLength; $j++) {
$o = ($j * $width) + $i;
// don't use max() to avoid function call overhead
$firstOrLast = $from[$i - 1] === $to[$j - 1] ? $matrix[$o - $width - 1] + 1 : 0;
if ($matrix[$o - 1] > $matrix[$o - $width]) {
if ($firstOrLast > $matrix[$o - 1]) {
$matrix[$o] = $firstOrLast;
} else {
$matrix[$o] = $matrix[$o - 1];
}
} else {
if ($firstOrLast > $matrix[$o - $width]) {
$matrix[$o] = $firstOrLast;
} else {
$matrix[$o] = $matrix[$o - $width];
}
}
}
}
$i = $fromLength;
$j = $toLength;
while ($i > 0 && $j > 0) {
if ($from[$i - 1] === $to[$j - 1]) {
$common[] = $from[$i - 1];
$i--;
$j--;
} else {
$o = ($j * $width) + $i;
if ($matrix[$o - $width] > $matrix[$o - 1]) {
$j--;
} else {
$i--;
}
}
}
return array_reverse($common);
}
}