From cf92b4dd1521241eefc58eaf6dcd202cd83969d8 Mon Sep 17 00:00:00 2001
From: ArthurHoaro <arthur@hoa.ro>
Date: Sat, 25 May 2019 15:52:27 +0200
Subject: Apply the new system (Bookmark + Service) to the whole code base

See https://github.com/shaarli/Shaarli/issues/1307
---
 plugins/markdown/markdown.php | 365 ------------------------------------------
 1 file changed, 365 deletions(-)
 delete mode 100644 plugins/markdown/markdown.php

(limited to 'plugins/markdown/markdown.php')

diff --git a/plugins/markdown/markdown.php b/plugins/markdown/markdown.php
deleted file mode 100644
index f6f66cc5..00000000
--- a/plugins/markdown/markdown.php
+++ /dev/null
@@ -1,365 +0,0 @@
-<?php
-
-/**
- * Plugin Markdown.
- *
- * Shaare's descriptions are parsed with Markdown.
- */
-
-use Shaarli\Config\ConfigManager;
-use Shaarli\Plugin\PluginManager;
-use Shaarli\Router;
-
-/*
- * If this tag is used on a shaare, the description won't be processed by Parsedown.
- */
-define('NO_MD_TAG', 'nomarkdown');
-
-/**
- * Parse linklist descriptions.
- *
- * @param array         $data linklist data.
- * @param ConfigManager $conf instance.
- *
- * @return mixed linklist data parsed in markdown (and converted to HTML).
- */
-function hook_markdown_render_linklist($data, $conf)
-{
-    foreach ($data['links'] as &$value) {
-        if (!empty($value['tags']) && noMarkdownTag($value['tags'])) {
-            $value = stripNoMarkdownTag($value);
-            continue;
-        }
-        $value['description_src'] = $value['description'];
-        $value['description'] = process_markdown(
-            $value['description'],
-            $conf->get('security.markdown_escape', true),
-            $conf->get('security.allowed_protocols')
-        );
-    }
-    return $data;
-}
-
-/**
- * Parse feed linklist descriptions.
- *
- * @param array $data linklist data.
- * @param ConfigManager $conf instance.
- *
- * @return mixed linklist data parsed in markdown (and converted to HTML).
- */
-function hook_markdown_render_feed($data, $conf)
-{
-    foreach ($data['links'] as &$value) {
-        if (!empty($value['tags']) && noMarkdownTag($value['tags'])) {
-            $value = stripNoMarkdownTag($value);
-            continue;
-        }
-        $value['description'] = reverse_feed_permalink($value['description']);
-        $value['description'] = process_markdown(
-            $value['description'],
-            $conf->get('security.markdown_escape', true),
-            $conf->get('security.allowed_protocols')
-        );
-    }
-
-    return $data;
-}
-
-/**
- * Parse daily descriptions.
- *
- * @param array         $data daily data.
- * @param ConfigManager $conf instance.
- *
- * @return mixed daily data parsed in markdown (and converted to HTML).
- */
-function hook_markdown_render_daily($data, $conf)
-{
-    //var_dump($data);die;
-    // Manipulate columns data
-    foreach ($data['linksToDisplay'] as &$value) {
-        if (!empty($value['tags']) && noMarkdownTag($value['tags'])) {
-            $value = stripNoMarkdownTag($value);
-            continue;
-        }
-        $value['formatedDescription'] = process_markdown(
-            $value['formatedDescription'],
-            $conf->get('security.markdown_escape', true),
-            $conf->get('security.allowed_protocols')
-        );
-    }
-
-    return $data;
-}
-
-/**
- * Check if noMarkdown is set in tags.
- *
- * @param string $tags tag list
- *
- * @return bool true if markdown should be disabled on this link.
- */
-function noMarkdownTag($tags)
-{
-    return preg_match('/(^|\s)'. NO_MD_TAG .'(\s|$)/', $tags);
-}
-
-/**
- * Remove the no-markdown meta tag so it won't be displayed.
- *
- * @param array $link Link data.
- *
- * @return array Updated link without no markdown tag.
- */
-function stripNoMarkdownTag($link)
-{
-    if (! empty($link['taglist'])) {
-        $offset = array_search(NO_MD_TAG, $link['taglist']);
-        if ($offset !== false) {
-            unset($link['taglist'][$offset]);
-        }
-    }
-
-    if (!empty($link['tags'])) {
-        str_replace(NO_MD_TAG, '', $link['tags']);
-    }
-
-    return $link;
-}
-
-/**
- * When link list is displayed, include markdown CSS.
- *
- * @param array $data includes data.
- *
- * @return mixed - includes data with markdown CSS file added.
- */
-function hook_markdown_render_includes($data)
-{
-    if ($data['_PAGE_'] == Router::$PAGE_LINKLIST
-        || $data['_PAGE_'] == Router::$PAGE_DAILY
-        || $data['_PAGE_'] == Router::$PAGE_EDITLINK
-    ) {
-        $data['css_files'][] = PluginManager::$PLUGINS_PATH . '/markdown/markdown.css';
-    }
-
-    return $data;
-}
-
-/**
- * Hook render_editlink.
- * Adds an help link to markdown syntax.
- *
- * @param array $data data passed to plugin
- *
- * @return array altered $data.
- */
-function hook_markdown_render_editlink($data)
-{
-    // Load help HTML into a string
-    $txt = file_get_contents(PluginManager::$PLUGINS_PATH .'/markdown/help.html');
-    $translations = [
-        t('Description will be rendered with'),
-        t('Markdown syntax documentation'),
-        t('Markdown syntax'),
-    ];
-    $data['edit_link_plugin'][] = vsprintf($txt, $translations);
-    // Add no markdown 'meta-tag' in tag list if it was never used, for autocompletion.
-    if (! in_array(NO_MD_TAG, $data['tags'])) {
-        $data['tags'][NO_MD_TAG] = 0;
-    }
-
-    return $data;
-}
-
-
-/**
- * Remove HTML links auto generated by Shaarli core system.
- * Keeps HREF attributes.
- *
- * @param string $description input description text.
- *
- * @return string $description without HTML links.
- */
-function reverse_text2clickable($description)
-{
-    $descriptionLines = explode(PHP_EOL, $description);
-    $descriptionOut = '';
-    $codeBlockOn = false;
-    $lineCount = 0;
-
-    foreach ($descriptionLines as $descriptionLine) {
-        // Detect line of code: starting with 4 spaces,
-        // except lists which can start with +/*/- or `2.` after spaces.
-        $codeLineOn = preg_match('/^    +(?=[^\+\*\-])(?=(?!\d\.).)/', $descriptionLine) > 0;
-        // Detect and toggle block of code
-        if (!$codeBlockOn) {
-            $codeBlockOn = preg_match('/^```/', $descriptionLine) > 0;
-        } elseif (preg_match('/^```/', $descriptionLine) > 0) {
-            $codeBlockOn = false;
-        }
-
-        $hashtagTitle = ' title="Hashtag [^"]+"';
-        // Reverse `inline code` hashtags.
-        $descriptionLine = preg_replace(
-            '!(`[^`\n]*)<a href="[^ ]*"'. $hashtagTitle .'>([^<]+)</a>([^`\n]*`)!m',
-            '$1$2$3',
-            $descriptionLine
-        );
-
-        // Reverse all links in code blocks, only non hashtag elsewhere.
-        $hashtagFilter = (!$codeBlockOn && !$codeLineOn) ? '(?!'. $hashtagTitle .')': '(?:'. $hashtagTitle .')?';
-        $descriptionLine = preg_replace(
-            '#<a href="[^ ]*"'. $hashtagFilter .'>([^<]+)</a>#m',
-            '$1',
-            $descriptionLine
-        );
-
-        // Make hashtag links markdown ready, otherwise the links will be ignored with escape set to true
-        if (!$codeBlockOn && !$codeLineOn) {
-            $descriptionLine = preg_replace(
-                '#<a href="([^ ]*)"'. $hashtagTitle .'>([^<]+)</a>#m',
-                '[$2]($1)',
-                $descriptionLine
-            );
-        }
-
-        $descriptionOut .= $descriptionLine;
-        if ($lineCount++ < count($descriptionLines) - 1) {
-            $descriptionOut .= PHP_EOL;
-        }
-    }
-    return $descriptionOut;
-}
-
-/**
- * Remove <br> tag to let markdown handle it.
- *
- * @param string $description input description text.
- *
- * @return string $description without <br> tags.
- */
-function reverse_nl2br($description)
-{
-    return preg_replace('!<br */?>!im', '', $description);
-}
-
-/**
- * Remove HTML spaces '&nbsp;' auto generated by Shaarli core system.
- *
- * @param string $description input description text.
- *
- * @return string $description without HTML links.
- */
-function reverse_space2nbsp($description)
-{
-    return preg_replace('/(^| )&nbsp;/m', '$1 ', $description);
-}
-
-function reverse_feed_permalink($description)
-{
-    return preg_replace('@&#8212; <a href="([^"]+)" title="[^"]+">([^<]+)</a>$@im', '&#8212; [$2]($1)', $description);
-}
-
-/**
- * Replace not whitelisted protocols with http:// in given description.
- *
- * @param string $description      input description text.
- * @param array  $allowedProtocols list of allowed protocols.
- *
- * @return string $description without malicious link.
- */
-function filter_protocols($description, $allowedProtocols)
-{
-    return preg_replace_callback(
-        '#]\((.*?)\)#is',
-        function ($match) use ($allowedProtocols) {
-            return ']('. whitelist_protocols($match[1], $allowedProtocols) .')';
-        },
-        $description
-    );
-}
-
-/**
- * Remove dangerous HTML tags (tags, iframe, etc.).
- * Doesn't affect <code> content (already escaped by Parsedown).
- *
- * @param string $description input description text.
- *
- * @return string given string escaped.
- */
-function sanitize_html($description)
-{
-    $escapeTags = array(
-        'script',
-        'style',
-        'link',
-        'iframe',
-        'frameset',
-        'frame',
-    );
-    foreach ($escapeTags as $tag) {
-        $description = preg_replace_callback(
-            '#<\s*'. $tag .'[^>]*>(.*</\s*'. $tag .'[^>]*>)?#is',
-            function ($match) {
-                return escape($match[0]);
-            },
-            $description
-        );
-    }
-    $description = preg_replace(
-        '#(<[^>]+\s)on[a-z]*="?[^ "]*"?#is',
-        '$1',
-        $description
-    );
-    return $description;
-}
-
-/**
- * Render shaare contents through Markdown parser.
- *   1. Remove HTML generated by Shaarli core.
- *   2. Reverse the escape function.
- *   3. Generate markdown descriptions.
- *   4. Sanitize sensible HTML tags for security.
- *   5. Wrap description in 'markdown' CSS class.
- *
- * @param string $description input description text.
- * @param bool   $escape      escape HTML entities
- *
- * @return string HTML processed $description.
- */
-function process_markdown($description, $escape = true, $allowedProtocols = [])
-{
-    $parsedown = new Parsedown();
-
-    $processedDescription = $description;
-    $processedDescription = reverse_nl2br($processedDescription);
-    $processedDescription = reverse_space2nbsp($processedDescription);
-    $processedDescription = reverse_text2clickable($processedDescription);
-    $processedDescription = filter_protocols($processedDescription, $allowedProtocols);
-    $processedDescription = unescape($processedDescription);
-    $processedDescription = $parsedown
-        ->setMarkupEscaped($escape)
-        ->setBreaksEnabled(true)
-        ->text($processedDescription);
-    $processedDescription = sanitize_html($processedDescription);
-
-    if (!empty($processedDescription)) {
-        $processedDescription = '<div class="markdown">'. $processedDescription . '</div>';
-    }
-
-    return $processedDescription;
-}
-
-/**
- * This function is never called, but contains translation calls for GNU gettext extraction.
- */
-function markdown_dummy_translation()
-{
-    // meta
-    t('Render shaare description with Markdown syntax.<br><strong>Warning</strong>:
-If your shaared descriptions contained HTML tags before enabling the markdown plugin,
-enabling it might break your page.
-See the <a href="https://github.com/shaarli/Shaarli/tree/master/plugins/markdown#html-rendering">README</a>.');
-}
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