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[FEATURE] Introduce FlatTemplateResolver
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,147 @@ | ||
| <?php | ||
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| declare(strict_types=1); | ||
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| /* | ||
| * This file is part of the TYPO3 CMS extension "handlebars". | ||
| * | ||
| * Copyright (C) 2024 Elias Häußler <e.haeussler@familie-redlich.de> | ||
| * | ||
| * This program is free software: you can redistribute it and/or modify | ||
| * it under the terms of the GNU General Public License as published by | ||
| * the Free Software Foundation, either version 2 of the License, or | ||
| * (at your option) any later version. | ||
| * | ||
| * This program is distributed in the hope that it will be useful, | ||
| * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| * GNU General Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU General Public License | ||
| * along with this program. If not, see <https://www.gnu.org/licenses/>. | ||
| */ | ||
|
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| namespace Fr\Typo3Handlebars\Renderer\Template; | ||
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| use Fr\Typo3Handlebars\Exception\TemplateNotFoundException; | ||
| use Symfony\Component\Finder\Finder; | ||
| use Symfony\Component\Finder\SplFileInfo; | ||
|
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| /** | ||
| * FlatTemplateResolver | ||
| * | ||
| * @author Elias Häußler <e.haeussler@familie-redlich.de> | ||
| * @license GPL-2.0-or-later | ||
| * @see https://fractal.build/guide/core-concepts/naming.html | ||
| */ | ||
| class FlatTemplateResolver extends HandlebarsTemplateResolver | ||
| { | ||
| protected const VARIANT_SEPARATOR = '--'; | ||
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| /** | ||
| * @var array<string, SplFileInfo> | ||
| */ | ||
| protected array $flattenedTemplates = []; | ||
| protected int $depth = 30; | ||
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| public function __construct( | ||
| TemplatePaths $templateRootPaths, | ||
| array $supportedFileExtensions = self::DEFAULT_FILE_EXTENSIONS, | ||
| ) { | ||
| parent::__construct($templateRootPaths, $supportedFileExtensions); | ||
| $this->buildTemplateMap(); | ||
| } | ||
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| public function resolveTemplatePath(string $templatePath): string | ||
| { | ||
| // Use default path resolving if path is not prefixed by "@" | ||
| if (!str_starts_with($templatePath, '@')) { | ||
| return parent::resolveTemplatePath($templatePath); | ||
| } | ||
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| // Strip "@" prefix from given template path | ||
| $templateName = ltrim($templatePath, '@'); | ||
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| // Return filename if template exists | ||
| if (isset($this->flattenedTemplates[$templateName])) { | ||
| return $this->flattenedTemplates[$templateName]->getPathname(); | ||
| } | ||
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| // Strip off template variant | ||
| if (str_contains($templateName, self::VARIANT_SEPARATOR)) { | ||
| [$templateName] = explode(self::VARIANT_SEPARATOR, $templateName, 2); | ||
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| if (isset($this->flattenedTemplates[$templateName])) { | ||
| return $this->flattenedTemplates[$templateName]->getPathname(); | ||
| } | ||
| } | ||
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| throw new TemplateNotFoundException($templateName, 1628256108); | ||
| } | ||
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| protected function buildTemplateMap(): void | ||
| { | ||
| // Reset flattened templates | ||
| $this->flattenedTemplates = []; | ||
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| // Instantiate finder | ||
| $finder = new Finder(); | ||
| $finder->files(); | ||
| $finder->name([...$this->buildExtensionPatterns()]); | ||
| $finder->depth(sprintf('< %d', $this->depth)); | ||
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| // Explicitly sort files and directories by name in order to streamline ordering | ||
| // with logic used in Fractal to ensure that the first occurrence of a flattened | ||
| // file is always used instead of relying on random behavior, | ||
| // see https://fractal.build/guide/core-concepts/naming.html#uniqueness | ||
| $finder->sortByName(); | ||
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| // Build template map | ||
| foreach ($this->templateRootPaths as $templateRootPath) { | ||
| $path = $this->resolveFilename($templateRootPath); | ||
| $pathFinder = clone $finder; | ||
| $pathFinder->in($path); | ||
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| foreach ($pathFinder as $file) { | ||
| if ($this->isFirstOccurrenceInTemplateRoot($file)) { | ||
| $this->registerTemplate($file); | ||
| } | ||
| } | ||
| } | ||
| } | ||
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| protected function isFirstOccurrenceInTemplateRoot(SplFileInfo $file): bool | ||
| { | ||
| $filename = $this->resolveFlatFilename($file); | ||
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| // Early return if template is not registered yet | ||
| if (!isset($this->flattenedTemplates[$filename])) { | ||
| return true; | ||
| } | ||
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| // In order to streamline template file flattening with logic used in Fractal, | ||
| // we always use the first flat file occurrence as resolved template, but provide | ||
| // the option to override exactly this file within other template root paths. | ||
| return $this->flattenedTemplates[$filename]->getRelativePathname() === $file->getRelativePathname(); | ||
| } | ||
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| protected function registerTemplate(SplFileInfo $file): void | ||
| { | ||
| $this->flattenedTemplates[$this->resolveFlatFilename($file)] = $file; | ||
| } | ||
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| protected function resolveFlatFilename(SplFileInfo $file): string | ||
| { | ||
| return pathinfo($file->getPathname(), PATHINFO_FILENAME); | ||
| } | ||
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| /** | ||
| * @return \Generator<string> | ||
| */ | ||
| protected function buildExtensionPatterns(): \Generator | ||
| { | ||
| foreach ($this->supportedFileExtensions as $extension) { | ||
| yield sprintf('*.%s', $extension); | ||
| } | ||
| } | ||
| } |
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25 changes: 25 additions & 0 deletions
25
Tests/Functional/Fixtures/test_extension/Resources/Templates/main-layout--variant.hbs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,25 @@ | ||
| this is the main block: | ||
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| {{#block "main"}} | ||
| main block | ||
| {{/block}} | ||
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| this is the second block: | ||
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| {{#block "second"}} | ||
| second block | ||
| {{/block}} | ||
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| this is the third block: | ||
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| {{#block "third"}} | ||
| third block | ||
| {{/block}} | ||
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| this is the fourth block: | ||
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| {{#block "fourth"}} | ||
| fourth block | ||
| {{/block}} | ||
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| this is the end. bye bye |
25 changes: 25 additions & 0 deletions
25
Tests/Functional/Fixtures/test_extension/Resources/Templates/main-layout.hbs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,25 @@ | ||
| this is the main block: | ||
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| {{#block "main"}} | ||
| main block | ||
| {{/block}} | ||
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| this is the second block: | ||
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| {{#block "second"}} | ||
| second block | ||
| {{/block}} | ||
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| this is the third block: | ||
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| {{#block "third"}} | ||
| third block | ||
| {{/block}} | ||
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| this is the fourth block: | ||
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| {{#block "fourth"}} | ||
| fourth block | ||
| {{/block}} | ||
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| this is the end. bye bye |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,20 @@ | ||
| { | ||
| "name": "cpsit/typo3-handlebars-test-extension", | ||
| "description": "Test extension for EXT:handlebars", | ||
| "license": "GPL-2.0-or-later", | ||
| "type": "typo3-cms-extension", | ||
| "version": "1.0.0", | ||
| "require": { | ||
| "typo3/cms-core": "*" | ||
| }, | ||
| "autoload": { | ||
| "psr-4": { | ||
| "Fr\\Typo3Handlebars\\TestExtension\\": "Classes/" | ||
| } | ||
| }, | ||
| "extra": { | ||
| "typo3/cms": { | ||
| "extension-key": "test_extension" | ||
| } | ||
| } | ||
| } |
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