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[String] Made AsciiSlugger fallback to parent locale's symbolsMap #39699

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Merged
merged 1 commit into from
Jan 26, 2021
Merged

[String] Made AsciiSlugger fallback to parent locale's symbolsMap #39699

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5 changes: 5 additions & 0 deletions src/Symfony/Component/String/CHANGELOG.md
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Original file line number Diff line number Diff line change
@@ -1,6 +1,11 @@
CHANGELOG
=========

5.3
---

* Made `AsciiSlugger` fallback to parent locale's symbolsMap

5.2.0
-----

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36 changes: 30 additions & 6 deletions src/Symfony/Component/String/Slugger/AsciiSlugger.php
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Expand Up @@ -111,6 +111,8 @@ public function slug(string $string, string $separator = '-', string $locale = n
}

if ($this->symbolsMap instanceof \Closure) {
// If the symbols map is passed as a closure, there is no need to fallback to the parent locale
// as the closure can just provide substitutions for all locales of interest.
$symbolsMap = $this->symbolsMap;
array_unshift($transliterator, static function ($s) use ($symbolsMap, $locale) {
return $symbolsMap($s, $locale);
Expand All @@ -119,9 +121,20 @@ public function slug(string $string, string $separator = '-', string $locale = n

$unicodeString = (new UnicodeString($string))->ascii($transliterator);

if (\is_array($this->symbolsMap) && isset($this->symbolsMap[$locale])) {
foreach ($this->symbolsMap[$locale] as $char => $replace) {
$unicodeString = $unicodeString->replace($char, ' '.$replace.' ');
if (\is_array($this->symbolsMap)) {
$map = null;
if (isset($this->symbolsMap[$locale])) {
$map = $this->symbolsMap[$locale];
} else {
$parent = self::getParentLocale($locale);
if ($parent && isset($this->symbolsMap[$parent])) {
$map = $this->symbolsMap[$parent];
}
}
if ($map) {
foreach ($map as $char => $replace) {
$unicodeString = $unicodeString->replace($char, ' '.$replace.' ');
}
}
}

Expand All @@ -143,17 +156,28 @@ private function createTransliterator(string $locale): ?\Transliterator
}

// Locale not supported and no parent, fallback to any-latin
if (false === $str = strrchr($locale, '_')) {
if (!$parent = self::getParentLocale($locale)) {
return $this->transliterators[$locale] = null;
}

// Try to use the parent locale (ie. try "de" for "de_AT") and cache both locales
$parent = substr($locale, 0, -\strlen($str));

if ($id = self::LOCALE_TO_TRANSLITERATOR_ID[$parent] ?? null) {
$transliterator = \Transliterator::create($id.'/BGN') ?? \Transliterator::create($id);
}

return $this->transliterators[$locale] = $this->transliterators[$parent] = $transliterator ?? null;
}

private static function getParentLocale(?string $locale): ?string
{
if (!$locale) {
return null;
}
if (false === $str = strrchr($locale, '_')) {
// no parent locale
return null;
}

return substr($locale, 0, -\strlen($str));
}
}
31 changes: 31 additions & 0 deletions src/Symfony/Component/String/Tests/SluggerTest.php
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Expand Up @@ -65,6 +65,37 @@ public function testSlugCharReplacementLocaleMethod()
$this->assertSame('yo_y_tu_a_esta_direccion_slug_en_senal_test_es', $slug);
}

public function testSlugCharReplacementLocaleConstructWithoutSymbolsMap()
{
$slugger = new AsciiSlugger('en');
$slug = (string) $slugger->slug('you & me with this address [email protected]', '_');

$this->assertSame('you_and_me_with_this_address_slug_at_test_uk', $slug);
}

public function testSlugCharReplacementParentLocaleConstructWithoutSymbolsMap()
{
$slugger = new AsciiSlugger('en_GB');
$slug = (string) $slugger->slug('you & me with this address [email protected]', '_');

$this->assertSame('you_and_me_with_this_address_slug_at_test_uk', $slug);
}

public function testSlugCharReplacementParentLocaleConstruct()
{
$slugger = new AsciiSlugger('fr_FR', ['fr' => ['&' => 'et', '@' => 'chez']]);
$slug = (string) $slugger->slug('toi & moi avec cette adresse [email protected]', '_');

$this->assertSame('toi_et_moi_avec_cette_adresse_slug_chez_test_fr', $slug);
}

public function testSlugCharReplacementParentLocaleMethod()
{
$slugger = new AsciiSlugger(null, ['es' => ['&' => 'y', '@' => 'en senal']]);
$slug = (string) $slugger->slug('yo & tu a esta dirección [email protected]', '_', 'es_ES');
$this->assertSame('yo_y_tu_a_esta_direccion_slug_en_senal_test_es', $slug);
}

public function testSlugClosure()
{
$slugger = new AsciiSlugger(null, function ($s, $locale) {
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