Enforce strict format for ID & name

src/Icons/src/Svg/SvgUtils.php

@@ -0,0 +1,62 @@
+<?php
+
+namespace Symfony\UX\Icons\Svg;
+
+final class SvgUtils
+{
+    /**
+     * Transforms a valid icon ID into an icon name.
+     *
+     * @throws \InvalidArgumentException if the ID is not valid
+     * @see isValidId()
+     */
+    public static function idToName(string $id): string
+    {
+        if (!self::isValidId($id)) {
+            throw new \InvalidArgumentException(sprintf('The id "%s" is not a valid id.', $id));
+        }
+
+        return str_replace('--', ':', $id);
+    }
+
+    /**
+     * Transforms a valid icon name into an ID.
+     *
+     * @throws \InvalidArgumentException if the name is not valid
+     * @see isValidName()
+     */
+    public static function nameToId(string $name): string
+    {
+        if (!self::isValidName($name)) {
+            throw new \InvalidArgumentException(sprintf('The name "%s" is not a valid name.', $name));
+        }
+
+        return str_replace(':', '--', $name);
+    }
+
+    /**
+     * Returns whether the given string is a valid icon ID.
+     *
+     * An icon ID is a string that contains only lowercase letters, numbers, and hyphens.
+     * It must be composed of slugs separated by double hyphens.
+     *
+     * @see https://regex101.com/r/mmvl5t/1
+     */
+    public static function isValidId(string $id): bool
+    {
+        return (bool) preg_match('#^([a-z0-9]+(-[a-z0-9]+)*)(--[a-z0-9]+(-[a-z0-9]+)*)*$#', $id);
+    }
+
+    /**
+     * Returns whether the given string is a valid icon name.
+     *
+     * An icon name is a string that contains only lowercase letters, numbers, and hyphens.
+     * It must be composed of slugs separated by colons.
+     *
+     * @see https://regex101.com/r/Gh2Z9s/1
+     */
+    public static function isValidName(string $name): bool
+    {
+        return (bool) preg_match('#^([a-z0-9]+(-[a-z0-9]+)*)(:[a-z0-9]+(-[a-z0-9]+)*)*$#', $name);
+    }
+}

src/Icons/tests/Unit/Svg/SvgUtilsTest.php

@@ -0,0 +1,191 @@
+<?php
+
+namespace Symfony\UX\Icons\Tests\Unit\Svg;
+
+use PHPUnit\Framework\TestCase;
+use Symfony\UX\Icons\Svg\SvgUtils;
+
+class SvgUtilsTest extends TestCase
+{
+     /**
+     * @dataProvider provideIdToName
+     */
+    public function testIdToName(string $id, string $name)
+    {
+        $this->assertSame($name, SvgUtils::idToName($id));
+    }
+
+    /**
+     * @dataProvider provideInvalidIds
+     */
+    public function testIdToNameThrowsException(string $id)
+    {
+        $this->expectException(\InvalidArgumentException::class);
+        $this->expectExceptionMessage('The id "'.$id.'" is not a valid id.');
+
+        SvgUtils::idToName($id);
+    }
+
+    /**
+     * @dataProvider provideNameToId
+     */
+    public function testNameToId(string $name, string $id)
+    {
+        $this->assertEquals($id, SvgUtils::nameToId($name));
+    }
+
+    /**
+     * @dataProvider provideInvalidNames
+     */
+    public function testNameToIdThrowsException(string $name)
+    {
+        $this->expectException(\InvalidArgumentException::class);
+        $this->expectExceptionMessage('The name "'.$name.'" is not a valid name.');
+
+        SvgUtils::nameToId($name);
+    }
+
+    /**
+     * @dataProvider provideValidIds
+     */
+    public function testIsValidIdWithValidIds(string $id): void
+    {
+        $this->assertTrue(SvgUtils::isValidId($id));
+    }
+
+    /**
+     * @dataProvider provideInvalidIds
+     */
+    public function testIsValidIdWithInvalidIds(string $id): void
+    {
+        $this->assertFalse(SvgUtils::isValidId($id));
+    }
+
+    /**
+     * @dataProvider provideValidNames
+     */
+    public function testIsValidNameWithValidNames(string $name): void
+    {
+        $this->assertTrue(SvgUtils::isValidName($name));
+    }
+
+    /**
+     * @dataProvider provideInvalidNames
+     */
+    public function testIsValidNameWithInvalidNames(string $name): void
+    {
+        $this->assertFalse(SvgUtils::isValidName($name));
+    }
+
+    /**
+     * @dataProvider provideInvalidIds
+     */
+    public function testInvalidIdToName(string $id)
+    {
+        $this->expectException(\InvalidArgumentException::class);
+        $this->expectExceptionMessage('The id "'.$id.'" is not a valid id.');
+
+        $this->assertFalse(SvgUtils::isValidId($id));
+        SvgUtils::idToName($id);
+    }
+
+    public static function provideIdToName(): iterable
+    {
+        yield from [
+            ['foo', 'foo'],
+            ['foo-bar', 'foo-bar'],
+            ['foo-bar-baz', 'foo-bar-baz'],
+            ['foo--bar', 'foo:bar'],
+            ['foo--bar--baz', 'foo:bar:baz'],
+            ['foo-bar--baz', 'foo-bar:baz'],
+            ['foo--bar-baz', 'foo:bar-baz'],
+        ];
+    }
+
+    public static function provideNameToId(): iterable
+    {
+        yield from [
+            ['foo', 'foo'],
+            ['foo-bar', 'foo-bar'],
+            ['foo-bar-baz', 'foo-bar-baz'],
+            ['foo:bar', 'foo--bar'],
+            ['foo:bar:baz', 'foo--bar--baz'],
+            ['foo-bar:baz', 'foo-bar--baz'],
+            ['foo:bar-baz', 'foo--bar-baz'],
+        ];
+    }
+
+    public static function provideValidIds(): iterable
+    {
+        yield from self::provideValidIdentifiers();
+        yield from [
+            ['foo--bar'],
+            ['foo--bar-baz'],
+            ['foo-bar--baz'],
+        ];
+    }
+
+    public static function provideInvalidIds(): iterable
+    {
+        yield from self::provideInvalidIdentifiers();
+        yield from [
+            ['foo:'],
+            [':foo'],
+            ['foo::bar'],
+        ];
+    }
+
+    public static function provideValidNames(): iterable
+    {
+        yield from self::provideValidIdentifiers();
+        yield from [
+            ['foo:bar-baz'],
+            ['foo:bar'],
+        ];
+    }
+
+    public static function provideInvalidNames(): iterable
+    {
+        yield from self::provideInvalidIdentifiers();
+        yield from [
+            ['foo:'],
+            [':foo'],
+            ['foo::bar'],
+            ['foo:::bar'],
+            ['foo::'],
+            ['::foo'],
+            ['foo--bar'],
+        ];
+    }
+
+     private static function provideValidIdentifiers(): iterable
+    {
+        yield from [
+            ['foo'],
+            ['123'],
+            ['foo-bar'],
+            ['123-456'],
+        ];
+    }
+
+    private static function provideInvalidIdentifiers(): iterable
+    {
+        yield from [
+            [''],
+            ['FOO'],
+            ['&'],
+            ['é'],
+            ['.'],
+            ['/'],
+            ['foo-'],
+            ['-bar'],
+            ['_'],
+            ['foo_bar'],
+            [' '],
+            ['foo '],
+            [' foo'],
+            ['🙂'],
+        ];
+    }
+
+}