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abilities-api
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abilities-api.php
(23.8 KB)
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abilities.php
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admin-bar.php
(36.1 KB)
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assets
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atomlib.php
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author-template.php
(18.94 KB)
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block-bindings
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block-bindings.php
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block-editor.php
(28.6 KB)
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block-i18n.json
(316 B)
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block-patterns
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block-patterns.php
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block-supports
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block-template-utils.php
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block-template.php
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blocks
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blocks.php
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bookmark-template.php
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bookmark.php
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cache-compat.php
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cache.php
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canonical.php
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capabilities.php
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category-template.php
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category.php
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certificates
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class-IXR.php
(2.55 KB)
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class-avif-info.php
(28.92 KB)
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class-feed.php
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class-http.php
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class-json.php
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class-oembed.php
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class-phpass.php
(6.61 KB)
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class-phpmailer.php
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class-pop3.php
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class-requests.php
(2.18 KB)
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class-simplepie.php
(453 B)
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class-smtp.php
(457 B)
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class-snoopy.php
(36.83 KB)
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class-walker-category-dropdown.php
(2.41 KB)
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class-walker-category.php
(8.28 KB)
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class-walker-comment.php
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class-walker-nav-menu.php
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class-walker-page-dropdown.php
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class-walker-page.php
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class-wp-admin-bar.php
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class-wp-ajax-response.php
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class-wp-application-passwords.php
(16.7 KB)
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class-wp-block-bindings-registry.php
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class-wp-block-bindings-source.php
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class-wp-block-editor-context.php
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class-wp-block-list.php
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class-wp-block-metadata-registry.php
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class-wp-block-parser-block.php
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class-wp-block-parser-frame.php
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class-wp-block-parser.php
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class-wp-block-pattern-categories-registry.php
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class-wp-block-patterns-registry.php
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class-wp-block-processor.php
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class-wp-block-styles-registry.php
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class-wp-block-supports.php
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class-wp-block-template.php
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class-wp-block-templates-registry.php
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class-wp-block-type-registry.php
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class-wp-block-type.php
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class-wp-block.php
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class-wp-classic-to-block-menu-converter.php
(3.97 KB)
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class-wp-comment-query.php
(47.66 KB)
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class-wp-comment.php
(9.22 KB)
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class-wp-customize-control.php
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class-wp-customize-manager.php
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class-wp-customize-nav-menus.php
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class-wp-customize-panel.php
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class-wp-customize-section.php
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class-wp-customize-setting.php
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class-wp-customize-widgets.php
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class-wp-date-query.php
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class-wp-dependencies.php
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class-wp-dependency.php
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class-wp-duotone.php
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class-wp-editor.php
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class-wp-embed.php
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class-wp-error.php
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class-wp-exception.php
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class-wp-fatal-error-handler.php
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class-wp-feed-cache-transient.php
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class-wp-feed-cache.php
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class-wp-hook.php
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class-wp-http-cookie.php
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class-wp-http-curl.php
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class-wp-http-encoding.php
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class-wp-http-ixr-client.php
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class-wp-http-proxy.php
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class-wp-http-requests-hooks.php
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class-wp-http-requests-response.php
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class-wp-http-response.php
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class-wp-http-streams.php
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class-wp-http.php
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class-wp-image-editor-gd.php
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class-wp-image-editor-imagick.php
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class-wp-image-editor.php
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class-wp-list-util.php
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class-wp-locale-switcher.php
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class-wp-locale.php
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class-wp-matchesmapregex.php
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class-wp-meta-query.php
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class-wp-metadata-lazyloader.php
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class-wp-navigation-fallback.php
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class-wp-network-query.php
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class-wp-network.php
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class-wp-object-cache.php
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class-wp-oembed-controller.php
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class-wp-oembed.php
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class-wp-paused-extensions-storage.php
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class-wp-phpmailer.php
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class-wp-plugin-dependencies.php
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class-wp-post-type.php
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class-wp-post.php
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class-wp-query.php
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class-wp-recovery-mode-cookie-service.php
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class-wp-recovery-mode-email-service.php
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class-wp-recovery-mode-key-service.php
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class-wp-recovery-mode-link-service.php
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class-wp-recovery-mode.php
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class-wp-rewrite.php
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class-wp-role.php
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class-wp-roles.php
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class-wp-script-modules.php
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class-wp-scripts.php
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class-wp-session-tokens.php
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class-wp-simplepie-file.php
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class-wp-simplepie-sanitize-kses.php
(1.87 KB)
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class-wp-site-query.php
(30.91 KB)
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class-wp-site.php
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class-wp-speculation-rules.php
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class-wp-styles.php
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class-wp-tax-query.php
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class-wp-taxonomy.php
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class-wp-term-query.php
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class-wp-term.php
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class-wp-text-diff-renderer-inline.php
(979 B)
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class-wp-text-diff-renderer-table.php
(18.44 KB)
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class-wp-textdomain-registry.php
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class-wp-theme-json-data.php
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class-wp-theme-json-resolver.php
(34.9 KB)
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class-wp-theme-json-schema.php
(7.19 KB)
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class-wp-theme-json.php
(160.5 KB)
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class-wp-theme.php
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class-wp-token-map.php
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class-wp-url-pattern-prefixer.php
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class-wp-user-meta-session-tokens.php
(2.94 KB)
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class-wp-user-query.php
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class-wp-user-request.php
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class-wp-user.php
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class-wp-walker.php
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class-wp-widget-factory.php
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class-wp-widget.php
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class-wp-xmlrpc-server.php
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class-wp.php
(25.86 KB)
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class-wpdb.php
(115.85 KB)
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class.wp-dependencies.php
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class.wp-scripts.php
(343 B)
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class.wp-styles.php
(338 B)
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comment-template.php
(100.73 KB)
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comment.php
(130.93 KB)
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compat-utf8.php
(19.1 KB)
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compat.php
(17.41 KB)
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cron.php
(41.98 KB)
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css
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customize
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date.php
(400 B)
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default-constants.php
(11.1 KB)
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default-filters.php
(37.02 KB)
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default-widgets.php
(2.24 KB)
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deprecated.php
(188.13 KB)
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embed-template.php
(338 B)
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embed.php
(38 KB)
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error-protection.php
(4.02 KB)
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error_log
(4.25 KB)
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feed-atom-comments.php
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feed-atom.php
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feed-rdf.php
(2.61 KB)
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feed-rss.php
(1.16 KB)
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feed-rss2-comments.php
(4.04 KB)
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feed-rss2.php
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feed.php
(23.03 KB)
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fonts
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fonts.php
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formatting.php
(346.43 KB)
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functions.php
(281.84 KB)
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functions.wp-scripts.php
(14.95 KB)
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functions.wp-styles.php
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general-template.php
(168.95 KB)
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global-styles-and-settings.php
(20.71 KB)
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html-api
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http.php
(25.27 KB)
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https-detection.php
(5.72 KB)
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https-migration.php
(4.63 KB)
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images
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interactivity-api
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js
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kses.php
(81.72 KB)
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l10n
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l10n.php
(67.18 KB)
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link-template.php
(156.36 KB)
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load.php
(55.19 KB)
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locale.php
(162 B)
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media-template.php
(61.72 KB)
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media.php
(216 KB)
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meta.php
(65 KB)
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ms-blogs.php
(25.24 KB)
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ms-default-constants.php
(4.81 KB)
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ms-default-filters.php
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ms-deprecated.php
(21.25 KB)
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ms-files.php
(2.79 KB)
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ms-functions.php
(89.69 KB)
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ms-load.php
(19.42 KB)
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ms-network.php
(3.69 KB)
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ms-settings.php
(4.11 KB)
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ms-site.php
(40.74 KB)
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nav-menu-template.php
(25.38 KB)
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nav-menu.php
(43.33 KB)
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option.php
(102.57 KB)
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php-compat
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pluggable-deprecated.php
(6.18 KB)
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pluggable.php
(124.45 KB)
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plugin.php
(35.65 KB)
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pomo
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post-formats.php
(6.94 KB)
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post-template.php
(67.04 KB)
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post-thumbnail-template.php
(10.62 KB)
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post.php
(289.13 KB)
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query.php
(36.23 KB)
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registration-functions.php
(200 B)
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registration.php
(200 B)
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rest-api
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rest-api.php
(98.29 KB)
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revision.php
(30.02 KB)
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rewrite.php
(19.03 KB)
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robots-template.php
(5.06 KB)
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rss-functions.php
(255 B)
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rss.php
(22.66 KB)
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script-loader.php
(150.38 KB)
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script-modules.php
(9.68 KB)
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session.php
(258 B)
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shortcodes.php
(23.49 KB)
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sitemaps
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sitemaps.php
(3.16 KB)
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sodium_compat
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speculative-loading.php
(8.4 KB)
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spl-autoload-compat.php
(441 B)
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style-engine
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style-engine.php
(7.39 KB)
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taxonomy.php
(172.91 KB)
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template-canvas.php
(544 B)
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template-loader.php
(3.84 KB)
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template.php
(35.97 KB)
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theme-compat
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theme-i18n.json
(1.49 KB)
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theme-previews.php
(2.84 KB)
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theme-templates.php
(6.09 KB)
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theme.json
(8.71 KB)
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theme.php
(131.84 KB)
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update.php
(37.45 KB)
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user.php
(173.89 KB)
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utf8.php
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vars.php
(6.41 KB)
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version.php
(1.08 KB)
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widgets
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widgets.php
(69.46 KB)
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wp-db.php
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wp-diff.php
(799 B)
Editing: compat-utf8.php
<?php /** * Finds spans of valid and invalid UTF-8 bytes in a given string. * * This is a low-level tool to power various UTF-8 functionality. * It scans through a string until it finds invalid byte spans. * When it does this, it does three things: * * - Assigns `$at` to the position after the last successful code point. * - Assigns `$invalid_length` to the length of the maximal subpart of * the invalid bytes starting at `$at`. * - Returns how many code points were successfully scanned. * * This information is enough to build a number of useful UTF-8 functions. * * Example: * * // รฑ is U+F1, which in `ISO-8859-1`/`latin1`/`Windows-1252`/`cp1252` is 0xF1. * "Pi\xF1a" === $pineapple = mb_convert_encoding( "Piรฑa", 'Windows-1252', 'UTF-8' ); * $at = $invalid_length = 0; * * // The first step finds the invalid 0xF1 byte. * 2 === _wp_scan_utf8( $pineapple, $at, $invalid_length ); * $at === 2; $invalid_length === 1; * * // The second step continues to the end of the string. * 1 === _wp_scan_utf8( $pineapple, $at, $invalid_length ); * $at === 4; $invalid_length === 0; * * Note! While passing an options array here might be convenient from a calling-code standpoint, * this function is intended to serve as a very low-level foundation upon which to build * higher level functionality. For the sake of keeping costs explicit all arguments are * passed directly. * * @since 6.9.0 * @access private * * @param string $bytes UTF-8 encoded string which might include invalid spans of bytes. * @param int $at Where to start scanning. * @param int $invalid_length Will be set to how many bytes are to be ignored after `$at`. * @param int|null $max_bytes Stop scanning after this many bytes have been seen. * @param int|null $max_code_points Stop scanning after this many code points have been seen. * @param bool|null $has_noncharacters Set to indicate if scanned string contained noncharacters. * @return int How many code points were successfully scanned. */ function _wp_scan_utf8( string $bytes, int &$at, int &$invalid_length, ?int $max_bytes = null, ?int $max_code_points = null, ?bool &$has_noncharacters = null ): int { $byte_length = strlen( $bytes ); $end = min( $byte_length, $at + ( $max_bytes ?? PHP_INT_MAX ) ); $invalid_length = 0; $count = 0; $max_count = $max_code_points ?? PHP_INT_MAX; $has_noncharacters = false; for ( $i = $at; $i < $end && $count <= $max_count; $i++ ) { /* * Quickly skip past US-ASCII bytes, all of which are valid UTF-8. * * This optimization step improves the speed from 10x to 100x * depending on whether the JIT has optimized the function. */ $ascii_byte_count = strspn( $bytes, "\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f" . "\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f" . " !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~\x7f", $i, $end - $i ); if ( $count + $ascii_byte_count >= $max_count ) { $at = $i + ( $max_count - $count ); $count = $max_count; return $count; } $count += $ascii_byte_count; $i += $ascii_byte_count; if ( $i >= $end ) { $at = $end; return $count; } /** * The above fast-track handled all single-byte UTF-8 characters. What * follows MUST be a multibyte sequence otherwise thereโs invalid UTF-8. * * Therefore everything past here is checking those multibyte sequences. * * It may look like thereโs a need to check against the max bytes here, * but since each match of a single character returns, this functions will * bail already if crossing the max-bytes threshold. This function SHALL * NOT return in the middle of a multi-byte character, so if a character * falls on each side of the max bytes, the entire character will be scanned. * * Because itโs possible that there are truncated characters, the use of * the null-coalescing operator with "\xC0" is a convenience for skipping * length checks on every continuation bytes. This works because 0xC0 is * always invalid in a UTF-8 string, meaning that if the string has been * truncated, it will find 0xC0 and reject as invalid UTF-8. * * > [The following table] lists all of the byte sequences that are well-formed * > in UTF-8. A range of byte values such as A0..BF indicates that any byte * > from A0 to BF (inclusive) is well-formed in that position. Any byte value * > outside of the ranges listed is ill-formed. * * > Table 3-7. Well-Formed UTF-8 Byte Sequences * โญโโโโโโโโโโโโโโโโโโโโโโฌโโโโโโโโโโโโโฌโโโโโโโโโโโโโโโฌโโโโโโโโโโโโโโฌโโโโโโโโโโโโโโโฎ * โ Code Points โ First Byte โ Second Byte โ Third Byte โ Fourth Byte โ * โโโโโโโโโโโโโโโโโโโโโโโผโโโโโโโโโโโโโผโโโโโโโโโโโโโโโผโโโโโโโโโโโโโโผโโโโโโโโโโโโโโโค * โ U+0000..U+007F โ 00..7F โ โ โ โ * โ U+0080..U+07FF โ C2..DF โ 80..BF โ โ โ * โ U+0800..U+0FFF โ E0 โ A0..BF โ 80..BF โ โ * โ U+1000..U+CFFF โ E1..EC โ 80..BF โ 80..BF โ โ * โ U+D000..U+D7FF โ ED โ 80..9F โ 80..BF โ โ * โ U+E000..U+FFFF โ EE..EF โ 80..BF โ 80..BF โ โ * โ U+10000..U+3FFFF โ F0 โ 90..BF โ 80..BF โ 80..BF โ * โ U+40000..U+FFFFF โ F1..F3 โ 80..BF โ 80..BF โ 80..BF โ * โ U+100000..U+10FFFF โ F4 โ 80..8F โ 80..BF โ 80..BF โ * โฐโโโโโโโโโโโโโโโโโโโโโโดโโโโโโโโโโโโโดโโโโโโโโโโโโโโโดโโโโโโโโโโโโโโดโโโโโโโโโโโโโโโฏ * * @see https://www.unicode.org/versions/Unicode16.0.0/core-spec/chapter-3/#G27506 */ // Valid two-byte code points. $b1 = ord( $bytes[ $i ] ); $b2 = ord( $bytes[ $i + 1 ] ?? "\xC0" ); if ( $b1 >= 0xC2 && $b1 <= 0xDF && $b2 >= 0x80 && $b2 <= 0xBF ) { ++$count; ++$i; continue; } // Valid three-byte code points. $b3 = ord( $bytes[ $i + 2 ] ?? "\xC0" ); if ( $b3 < 0x80 || $b3 > 0xBF ) { goto invalid_utf8; } if ( ( 0xE0 === $b1 && $b2 >= 0xA0 && $b2 <= 0xBF ) || ( $b1 >= 0xE1 && $b1 <= 0xEC && $b2 >= 0x80 && $b2 <= 0xBF ) || ( 0xED === $b1 && $b2 >= 0x80 && $b2 <= 0x9F ) || ( $b1 >= 0xEE && $b1 <= 0xEF && $b2 >= 0x80 && $b2 <= 0xBF ) ) { ++$count; $i += 2; // Covers the range U+FDD0โU+FDEF, U+FFFE, U+FFFF. if ( 0xEF === $b1 ) { $has_noncharacters |= ( ( 0xB7 === $b2 && $b3 >= 0x90 && $b3 <= 0xAF ) || ( 0xBF === $b2 && ( 0xBE === $b3 || 0xBF === $b3 ) ) ); } continue; } // Valid four-byte code points. $b4 = ord( $bytes[ $i + 3 ] ?? "\xC0" ); if ( $b4 < 0x80 || $b4 > 0xBF ) { goto invalid_utf8; } if ( ( 0xF0 === $b1 && $b2 >= 0x90 && $b2 <= 0xBF ) || ( $b1 >= 0xF1 && $b1 <= 0xF3 && $b2 >= 0x80 && $b2 <= 0xBF ) || ( 0xF4 === $b1 && $b2 >= 0x80 && $b2 <= 0x8F ) ) { ++$count; $i += 3; // Covers U+1FFFE, U+1FFFF, U+2FFFE, U+2FFFF, โฆ, U+10FFFE, U+10FFFF. $has_noncharacters |= ( ( 0x0F === ( $b2 & 0x0F ) ) && 0xBF === $b3 && ( 0xBE === $b4 || 0xBF === $b4 ) ); continue; } /** * When encountering invalid byte sequences, Unicode suggests finding the * maximal subpart of a text and replacing that subpart with a single * replacement character. * * > This practice is more secure because it does not result in the * > conversion consuming parts of valid sequences as though they were * > invalid. It also guarantees at least one replacement character will * > occur for each instance of an invalid sequence in the original text. * > Furthermore, this practice can be defined consistently for better * > interoperability between different implementations of conversion. * * @see https://www.unicode.org/versions/Unicode16.0.0/core-spec/chapter-5/#G40630 */ invalid_utf8: $at = $i; $invalid_length = 1; // Single-byte and two-byte characters. if ( ( 0x00 === ( $b1 & 0x80 ) ) || ( 0xC0 === ( $b1 & 0xE0 ) ) ) { return $count; } $b2 = ord( $bytes[ $i + 1 ] ?? "\xC0" ); $b3 = ord( $bytes[ $i + 2 ] ?? "\xC0" ); // Find the maximal subpart and skip past it. if ( 0xE0 === ( $b1 & 0xF0 ) ) { // Three-byte characters. $b2_valid = ( ( 0xE0 === $b1 && $b2 >= 0xA0 && $b2 <= 0xBF ) || ( $b1 >= 0xE1 && $b1 <= 0xEC && $b2 >= 0x80 && $b2 <= 0xBF ) || ( 0xED === $b1 && $b2 >= 0x80 && $b2 <= 0x9F ) || ( $b1 >= 0xEE && $b1 <= 0xEF && $b2 >= 0x80 && $b2 <= 0xBF ) ); $invalid_length = min( $end - $i, $b2_valid ? 2 : 1 ); return $count; } elseif ( 0xF0 === ( $b1 & 0xF8 ) ) { // Four-byte characters. $b2_valid = ( ( 0xF0 === $b1 && $b2 >= 0x90 && $b2 <= 0xBF ) || ( $b1 >= 0xF1 && $b1 <= 0xF3 && $b2 >= 0x80 && $b2 <= 0xBF ) || ( 0xF4 === $b1 && $b2 >= 0x80 && $b2 <= 0x8F ) ); $b3_valid = $b3 >= 0x80 && $b3 <= 0xBF; $invalid_length = min( $end - $i, $b2_valid ? ( $b3_valid ? 3 : 2 ) : 1 ); return $count; } return $count; } $at = $i; return $count; } /** * Fallback mechanism for safely validating UTF-8 bytes. * * @since 6.9.0 * @access private * * @see wp_is_valid_utf8() * * @param string $bytes String which might contain text encoded as UTF-8. * @return bool Whether the provided bytes can decode as valid UTF-8. */ function _wp_is_valid_utf8_fallback( string $bytes ): bool { $bytes_length = strlen( $bytes ); if ( 0 === $bytes_length ) { return true; } $next_byte_at = 0; $invalid_length = 0; _wp_scan_utf8( $bytes, $next_byte_at, $invalid_length ); return $bytes_length === $next_byte_at && 0 === $invalid_length; } /** * Fallback mechanism for replacing invalid spans of UTF-8 bytes. * * Example: * * 'Pi๏ฟฝa' === _wp_scrub_utf8_fallback( "Pi\xF1a" ); // โรฑโ is 0xF1 in Windows-1252. * * @since 6.9.0 * @access private * * @see wp_scrub_utf8() * * @param string $bytes UTF-8 encoded string which might contain spans of invalid bytes. * @return string Input string with spans of invalid bytes swapped with the replacement character. */ function _wp_scrub_utf8_fallback( string $bytes ): string { $bytes_length = strlen( $bytes ); $next_byte_at = 0; $was_at = 0; $invalid_length = 0; $scrubbed = ''; while ( $next_byte_at <= $bytes_length ) { _wp_scan_utf8( $bytes, $next_byte_at, $invalid_length ); if ( $next_byte_at >= $bytes_length ) { if ( 0 === $was_at ) { return $bytes; } return $scrubbed . substr( $bytes, $was_at, $next_byte_at - $was_at - $invalid_length ); } $scrubbed .= substr( $bytes, $was_at, $next_byte_at - $was_at ); $scrubbed .= "\u{FFFD}"; $next_byte_at += $invalid_length; $was_at = $next_byte_at; } return $scrubbed; } /** * Returns how many code points are found in the given UTF-8 string. * * Invalid spans of bytes count as a single code point according * to the maximal subpart rule. This function is a fallback method * for calling `mb_strlen( $text, 'UTF-8' )`. * * When negative values are provided for the byte offsets or length, * this will always report zero code points. * * Example: * * 4 === _wp_utf8_codepoint_count( 'text' ); * * // Groups are 'test', "\x90" as '๏ฟฝ', 'wp', "\xE2\x80" as '๏ฟฝ', "\xC0" as '๏ฟฝ', and 'test'. * 13 === _wp_utf8_codepoint_count( "test\x90wp\xE2\x80\xC0test" ); * * @since 6.9.0 * @access private * * @param string $text Count code points in this string. * @param ?int $byte_offset Start counting after this many bytes in `$text`. Must be positive. * @param ?int $max_byte_length Optional. Stop counting after having scanned past this many bytes. * Default is to scan until the end of the string. Must be positive. * @return int How many code points were found. */ function _wp_utf8_codepoint_count( string $text, ?int $byte_offset = 0, ?int $max_byte_length = PHP_INT_MAX ): int { if ( $byte_offset < 0 ) { return 0; } $count = 0; $at = $byte_offset; $end = strlen( $text ); $invalid_length = 0; $max_byte_length = min( $end - $at, $max_byte_length ); while ( $at < $end && ( $at - $byte_offset ) < $max_byte_length ) { $count += _wp_scan_utf8( $text, $at, $invalid_length, $max_byte_length - ( $at - $byte_offset ) ); $count += $invalid_length > 0 ? 1 : 0; $at += $invalid_length; } return $count; } /** * Given a starting offset within a string and a maximum number of code points, * return how many bytes are occupied by the span of characters. * * Invalid spans of bytes count as a single code point according to the maximal * subpart rule. This function is a fallback method for calling * `strlen( mb_substr( substr( $text, $at ), 0, $max_code_points ) )`. * * @since 6.9.0 * @access private * * @param string $text Count bytes of span in this text. * @param int $byte_offset Start counting at this byte offset. * @param int $max_code_points Stop counting after this many code points have been seen, * or at the end of the string. * @param ?int $found_code_points Optional. Will be set to number of found code points in * span, as this might be smaller than the maximum count if * the string is not long enough. * @return int Number of bytes spanned by the code points. */ function _wp_utf8_codepoint_span( string $text, int $byte_offset, int $max_code_points, ?int &$found_code_points = 0 ): int { $was_at = $byte_offset; $invalid_length = 0; $end = strlen( $text ); $found_code_points = 0; while ( $byte_offset < $end && $found_code_points < $max_code_points ) { $needed = $max_code_points - $found_code_points; $chunk_count = _wp_scan_utf8( $text, $byte_offset, $invalid_length, null, $needed ); $found_code_points += $chunk_count; // Invalid spans only convey one code point count regardless of how long they are. if ( 0 !== $invalid_length && $found_code_points < $max_code_points ) { ++$found_code_points; $byte_offset += $invalid_length; } } return $byte_offset - $was_at; } /** * Fallback support for determining if a string contains Unicode noncharacters. * * @since 6.9.0 * @access private * * @see \wp_has_noncharacters() * * @param string $text Are there noncharacters in this string? * @return bool Whether noncharacters were found in the string. */ function _wp_has_noncharacters_fallback( string $text ): bool { $at = 0; $invalid_length = 0; $has_noncharacters = false; $end = strlen( $text ); while ( $at < $end && ! $has_noncharacters ) { _wp_scan_utf8( $text, $at, $invalid_length, null, null, $has_noncharacters ); $at += $invalid_length; } return $has_noncharacters; } /** * Converts a string from ISO-8859-1 to UTF-8, maintaining backwards compatibility * with the deprecated function from the PHP standard library. * * @since 6.9.0 * @access private * * @see \utf8_encode() * * @param string $iso_8859_1_text Text treated as ISO-8859-1 (latin1) bytes. * @return string Text converted into UTF-8. */ function _wp_utf8_encode_fallback( $iso_8859_1_text ) { $iso_8859_1_text = (string) $iso_8859_1_text; $at = 0; $was_at = 0; $end = strlen( $iso_8859_1_text ); $utf8 = ''; while ( $at < $end ) { // US-ASCII bytes are identical in ISO-8859-1 and UTF-8. These are 0x00โ0x7F. $ascii_byte_count = strspn( $iso_8859_1_text, "\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f" . "\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f" . " !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~\x7f", $at ); if ( $ascii_byte_count > 0 ) { $at += $ascii_byte_count; continue; } // All other bytes transform into two-byte UTF-8 sequences. $code_point = ord( $iso_8859_1_text[ $at ] ); $byte1 = chr( 0xC0 | ( $code_point >> 6 ) ); $byte2 = chr( 0x80 | ( $code_point & 0x3F ) ); $utf8 .= substr( $iso_8859_1_text, $was_at, $at - $was_at ); $utf8 .= "{$byte1}{$byte2}"; ++$at; $was_at = $at; } if ( 0 === $was_at ) { return $iso_8859_1_text; } $utf8 .= substr( $iso_8859_1_text, $was_at ); return $utf8; } /** * Converts a string from UTF-8 to ISO-8859-1, maintaining backwards compatibility * with the deprecated function from the PHP standard library. * * @since 6.9.0 * @access private * * @see \utf8_decode() * * @param string $utf8_text Text treated as UTF-8 bytes. * @return string Text converted into ISO-8859-1. */ function _wp_utf8_decode_fallback( $utf8_text ) { $utf8_text = (string) $utf8_text; $at = 0; $was_at = 0; $end = strlen( $utf8_text ); $iso_8859_1_text = ''; while ( $at < $end ) { // US-ASCII bytes are identical in ISO-8859-1 and UTF-8. These are 0x00โ0x7F. $ascii_byte_count = strspn( $utf8_text, "\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f" . "\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f" . " !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~\x7f", $at ); if ( $ascii_byte_count > 0 ) { $at += $ascii_byte_count; continue; } $next_at = $at; $invalid_length = 0; $found = _wp_scan_utf8( $utf8_text, $next_at, $invalid_length, null, 1 ); $span_length = $next_at - $at; $next_byte = '?'; if ( 1 !== $found ) { if ( $invalid_length > 0 ) { $next_byte = ''; goto flush_sub_part; } break; } // All convertible code points are two-bytes long. $byte1 = ord( $utf8_text[ $at ] ); if ( 0xC0 !== ( $byte1 & 0xE0 ) ) { goto flush_sub_part; } // All convertible code points are not greater than U+FF. $byte2 = ord( $utf8_text[ $at + 1 ] ); $code_point = ( ( $byte1 & 0x1F ) << 6 ) | ( ( $byte2 & 0x3F ) ); if ( $code_point > 0xFF ) { goto flush_sub_part; } $next_byte = chr( $code_point ); flush_sub_part: $iso_8859_1_text .= substr( $utf8_text, $was_at, $at - $was_at ); $iso_8859_1_text .= $next_byte; $at += $span_length; $was_at = $at; if ( $invalid_length > 0 ) { $iso_8859_1_text .= '?'; $at += $invalid_length; $was_at = $at; } } if ( 0 === $was_at ) { return $utf8_text; } $iso_8859_1_text .= substr( $utf8_text, $was_at ); return $iso_8859_1_text; }
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