8000 bug #16864 [Yaml] fix indented line handling in folded blocks (xabbuh) · symfony/symfony@7660fb8 · GitHub
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bug #16864 [Yaml] fix indented line handling in folded blocks (xabbuh)
This PR was merged into the 2.3 branch. Discussion ---------- [Yaml] fix indented line handling in folded blocks | Q | A | ------------- | --- | Bug fix? | yes | New feature? | no | BC breaks? | no | Deprecations? | no | Tests pass? | yes | Fixed tickets | #9105 | License | MIT | Doc PR | Commits ------- 756834c [Yaml] fix indented line handling in folded blocks
2 parents af3f4ea + 756834c commit 7660fb8

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‎src/Symfony/Component/Yaml/Parser.php

Lines changed: 38 additions & 16 deletions
Original file line numberDiff line numberDiff line change
@@ -468,13 +468,13 @@ private function parseBlockScalar($style, $chomping = '', $indentation = 0)
468468
}
469469

470470
$isCurrentLineBlank = $this->isCurrentLineBlank();
471-
$text = '';
471+
$blockLines = array();
472472

473473
// leading blank lines are consumed before determining indentation
474474
while ($notEOF && $isCurrentLineBlank) {
475475
// newline only if not EOF
476476
if ($notEOF = $this->moveToNextLine()) {
477-
$text .= "\n";
477+
$blockLines[] = '';
478478
$isCurrentLineBlank = $this->isCurrentLineBlank();
479479
}
480480
}
@@ -495,37 +495,59 @@ private function parseBlockScalar($style, $chomping = '', $indentation = 0)
495495
preg_match($pattern, $this->currentLine, $matches)
496496
)
497497
) {
498-
if ($isCurrentLineBlank) {
499-
$text .= substr($this->currentLine, $indentation);
498+
if ($isCurrentLineBlank && strlen($this->currentLine) > $indentation) {
499+
$blockLines[] = substr($this->currentLine, $indentation);
500+
} elseif ($isCurrentLineBlank) {
501+
$blockLines[] = '';
500502
} else {
501-
$text .= $matches[1];
503+
$blockLines[] = $matches[1];
502504
}
503505

504506
// newline only if not EOF
505507
if ($notEOF = $this->moveToNextLine()) {
506-
$text .= "\n";
507508
$isCurrentLineBlank = $this->isCurrentLineBlank();
508509
}
509510
}
510511
} elseif ($notEOF) {
511-
$text .= "\n";
512+
$blockLines[] = '';
512513
}
513514

514515
if ($notEOF) {
516+
$blockLines[] = '';
515517
$this->moveToPreviousLine();
516518
}
517519

518520
// folded style
519521
if ('>' === $style) {
520-
// folded lines
521-
// replace all non-leading/non-trailing single newlines with spaces
522-
preg_match('/(\n*)$/', $text, $matches);
523-
$text = preg_replace('/(?<!\n|^)\n(?!\n)/', ' ', rtrim($text, "\n"));
524-
$text .= $matches[1];
525-
526-
// empty separation lines
527-
// remove one newline from each group of non-leading/non-trailing newlines
528-
$text = preg_replace('/[^\n]\n+\K\n(?=[^\n])/', '', $text);
522+
$text = '';
523+
$previousLineIndented = false;
524+
$previousLineBlank = false;
525+
526+
for ($i = 0; $i < count($blockLines); $i++) {
527+
if ('' === $blockLines[$i]) {
528+
$text .= "\n";
529+
$previousLineIndented = false;
530+
$previousLineBlank = true;
531+
} elseif (' ' === $blockLines[$i][0]) {
532+
$text .= "\n".$blockLines[$i];
533+
$previousLineIndented = true;
534+
$previousLineBlank = false;
535+
} elseif ($previousLineIndented) {
536+
$text .= "\n".$blockLines[$i];
537+
$previousLineIndented = false;
538+
$previousLineBlank = false;
539+
} elseif ($previousLineBlank || 0 === $i) {
540+
$text .= $blockLines[$i];
541+
$previousLineIndented = false;
542+
$previousLineBlank = false;
543+
} else {
544+
$text .= ' '.$blockLines[$i];
545+
$previousLineIndented = false;
546+
$previousLineBlank = false;
547+
}
548+
}
549+
} else {
550+
$text = implode("\n", $blockLines);
529551
}
530552

531553
// deal with trailing newlines

‎src/Symfony/Component/Yaml/Tests/ParserTest.php

Lines changed: 51 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -820,6 +820,57 @@ public function getCommentLikeStringInScalarBlockData()
820820
array($yaml2, $expected2),
821821
);
822822
}
823+
824+
public function testBlankLinesAreParsedAsNewLinesInFoldedBlocks()
825+
{
826+
$yaml = <<<EOT
827+
test: >
828+
<h2>A heading</h2>
829+
830+
<ul>
831+
<li>a list</li>
832+
<li>may be a good example</li>
833+
</ul>
834+
EOT;
835+
836+
$this->assertSame(
837+
array(
838+
'test' => <<<EOT
839+
<h2>A heading</h2>
840+
<ul> <li>a list</li> <li>may be a good example</li> </ul>
841+
EOT
842+
,
843+
),
844+
$this->parser->parse($yaml)
845+
);
846+
}
847+
848+
public function testAdditionallyIndentedLinesAreParsedAsNewLinesInFoldedBlocks()
849+
{
850+
$yaml = <<<EOT
851+
test: >
852+
<h2>A heading</h2>
853+
854+
<ul>
855+
<li>a list</li>
856+
<li>may be a good example</li>
857+
</ul>
858+
EOT;
859+
860+
$this->assertSame(
861+
array(
862+
'test' => <<<EOT
863+
<h2>A heading</h2>
864+
<ul>
865+
<li>a list</li>
866+
<li>may be a good example</li>
867+
</ul>
868+
EOT
869+
,
870+
),
871+
$this->parser->parse($yaml)
872+
);
873+
}
823874
}
824875

825876
class B

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