achmizs
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gist-embed.php
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| <?php if (!defined('PmWiki')) exit(); | |||
| /** \pastebin-embed.php | |||
| * \Copyright 2017-2021 Said Achmiz | |||
| * \Licensed under the MIT License | |||
| * \brief Embed Gists in a wikipage. | |||
| */ | |||
| $RecipeInfo['GistEmbed']['Version'] = '2018-10-19'; | |||
| ## (:gist-embed:) | |||
| Markup('gist-embed', '<fulltext', '/\\(:gist-embed\\s+(.+?)\\s*:\\)/', 'GistEmbed'); | |||
| SDV($GistEmbedHighlightStyle, "background-color: yellow;"); | |||
| function GistEmbed($m) { | |||
| static $id = 1; | |||
| ## Parse arguments to the markup. | |||
| $parsed = ParseArgs($m[1]); | |||
| ## These are the "bare" arguments (ones which don't require a key, just value(s)). | |||
| $args = $parsed['']; | |||
| $gist_id = $args[0]; | |||
| $noJS = in_array('no-js', $args); | |||
| $noFooter = in_array('nofooter', $args); | |||
| $noLineNumbers = in_array('nolinenums', $args); | |||
| $raw = in_array('raw', $args); | |||
| $noPre = in_array('no-pre', $args); | |||
| ## Check whether specific files are being specified. | |||
| $files = array(); | |||
| if ($args[1] && !in_array($args[1], array('no-js', 'nofooter', 'nolinenums', 'raw', 'no-pre'))) | |||
| $files = explode(',',$args[1]); | |||
| ## Convert the comma-delimited line ranges to an array containing each line to be | |||
| ## included as values. | |||
| ## Note that the line numbers will be zero-indexed (for use with raw text, etc.). | |||
| $line_ranges = $parsed['lines'] ? explode(',', $parsed['lines']) : array(); | |||
| $line_numbers = array(); | |||
| $to_end_from = -1; | |||
| foreach ($line_ranges as $key => $line_range) { | |||
| if (preg_match("/([0-9]+)[-–]([0-9]+)/", $line_range, $m)) { | |||
| $line_numbers = array_merge($line_numbers, range(--$m[1],--$m[2])); | |||
| } else if (preg_match("/([0-9]+)[-–]$/", $line_range, $m)) { | |||
| $line_numbers[] = $to_end_from = --$m[1]; | |||
| } else { | |||
| $line_numbers[] = --$line_range; | |||
| } | |||
| } | |||
| ## Same thing, but for highlighted line ranges. | |||
| $hl_line_ranges = $parsed['hl'] ? explode(',', $parsed['hl']) : array(); | |||
| $hl_line_numbers = array(); | |||
| $hl_to_end_from = -1; | |||
| foreach ($hl_line_ranges as $key => $hl_line_range) { | |||
| if (preg_match("/([0-9]+)[-–]([0-9]+)/", $hl_line_range, $m)) { | |||
| $hl_line_numbers = array_merge($hl_line_numbers, range(--$m[1],--$m[2])); | |||
| } else if (preg_match("/([0-9]+)[-–]$/", $hl_line_range, $m)) { | |||
| $hl_line_numbers[] = $hl_to_end_from = --$m[1]; | |||
| } else { | |||
| $hl_line_numbers[] = --$hl_line_range; | |||
| } | |||
| } | |||
| $embed_js_url = "https://gist.github.com/$gist_id.js"; | |||
| $embed_raw_url = "https://gist.github.com/$gist_id/raw/"; | |||
| $embed_json_url = "https://gist.github.com/$gist_id.json"; | |||
| $out = "<span class='gist-embed-error'>Unknown error.</span>"; | |||
| if ($raw) { | |||
| ## If no filenames have been specified, we'll have to retrieve the file list from | |||
| ## the server; otherwise, we'll have no idea what files to request, and just | |||
| ## retrieving the 'raw' URL for a multi-file gist (with no file specified) gets | |||
| ## the first file only... | |||
| if (empty($files)) { | |||
| $full_gist_data = json_decode(file_get_contents($embed_json_url),true); | |||
| $files = $full_gist_data['files']; | |||
| } | |||
| ## The raw text of each file of a multi-file gist must be retrieved individually. | |||
| $out = array(); | |||
| foreach ($files as $filename) { | |||
| $raw_text = file_get_contents($embed_raw_url.$filename); | |||
| if (!$raw_text) return Keep("<span class='gist-embed-error'>Could not retrieve gist!</span>"); | |||
| $raw_lines = explode("\n", $raw_text); | |||
| ## Convert HTML entities. | |||
| if (!$noPre) { | |||
| foreach ($raw_lines as $line) | |||
| $line = PVSE($line); | |||
| } | |||
| ## Highlighting only works if no-pre is NOT enabled AND if we're displaying a | |||
| ## single file only. | |||
| if (!empty($hl_line_numbers) && !$noPre && count($files) == 1) { | |||
| if ($hl_to_end_from >= 0) | |||
| $hl_line_numbers = array_merge($hl_line_numbers, range($hl_to_end_from, count($raw_lines) - 1)); | |||
| foreach ($hl_line_numbers as $l) { | |||
| $raw_lines[$l] = "<span class='gist-embed-highlighted-line'>" . rtrim($raw_lines[$l]) . "</span>"; | |||
| } | |||
| } | |||
| ## Specifying line numbers only works if we're displaying a single file only. | |||
| if (!empty($line_numbers) && count($files) == 1) { | |||
| if ($to_end_from >= 0) | |||
| $line_numbers = array_merge($line_numbers, range($to_end_from, count($raw_lines) - 1)); | |||
| $raw_lines = array_intersect_key($raw_lines, array_flip($line_numbers)); | |||
| } | |||
| $raw_text = implode("\n", $raw_lines); | |||
| ## The 'no-pre' option means we shouldn't wrap the text in a <pre> tag. | |||
| $out[] = $noPre ? $raw_text : Keep("<pre class='escaped gistRaw' id='gistEmbed_$id_$filename'>\n" . $raw_text . "\n</pre>\n"); | |||
| } | |||
| $out = implode($noPre ? "\n\n" : "", $out); | |||
| } else if ($noJS) { | |||
| include_once('simple_html_dom.php'); | |||
| $json_content = json_decode(file_get_contents($embed_json_url),true); | |||
| ## The style sheet. | |||
| global $HTMLHeaderFmt; | |||
| $HTMLHeaderFmt[] = "<link rel='stylesheet' type='text/css' href='" . $json_content['stylesheet'] . "' />\n"; | |||
| ## The HTML. | |||
| $content_html = str_get_html(stripcslashes($json_content['div'])); | |||
| $content = $content_html->find("div.gist", 0); | |||
| $content->id = "gistEmbed_$id"; | |||
| ## If specific files are specified, we simply delete the div.gist-file containers | |||
| ## that contain files we don't want. | |||
| if (!empty($files)) { | |||
| $file_ids = preg_replace("/\./", "-", $files); | |||
| $gist_file_blocks = $content_html->find("div.gist-file"); | |||
| foreach ($gist_file_blocks as $gist_file_block) { | |||
| if (!in_array(substr($gist_file_block->find("div.file", 0)->id, 5), $file_ids)) | |||
| $gist_file_block->outertext = ''; | |||
| } | |||
| } | |||
| ## Specifying line numbers only works if we're displaying a single file only. | |||
| $displayed_gist_files = array_filter($content_html->find("div.gist-file"), function ($d) { return $d->outertext; }); | |||
| if (!empty($line_numbers) && count($displayed_gist_files) == 1) { | |||
| $lines = reset($displayed_gist_files)->find(".js-file-line-container tr"); | |||
| if ($to_end_from >= 0) | |||
| $line_numbers = array_merge($line_numbers, range($to_end_from, count($lines) - 1)); | |||
| foreach ($lines as $l) { | |||
| $line_num =$l->childNodes(0)->getAttribute('data-line-number'); | |||
| if (!in_array(--$line_num, $line_numbers)) | |||
| $l->outertext = ''; | |||
| } | |||
| } | |||
| ## Highlighting specific line numbers only works if we're display a single file | |||
| ## only. | |||
| if (!empty($hl_line_numbers) && count($displayed_gist_files) == 1) { | |||
| $lines = reset($displayed_gist_files)->find(".js-file-line-container tr"); | |||
| if ($hl_to_end_from >= 0) | |||
| $hl_line_numbers = array_merge($hl_line_numbers, range($hl_to_end_from, count($lines) - 1)); | |||
| foreach ($lines as $i => $line) { | |||
| if (in_array($i, $hl_line_numbers)) { | |||
| $line->children(1)->class .= " gist-embed-highlighted-line"; | |||
| } | |||
| } | |||
| } | |||
| $out = Keep($content); | |||
| } else { | |||
| $out = Keep("<script id='gistEmbedScript_$id' src='$embed_js_url'></script>"); | |||
| ## If specific files are specified, we'll delete the div.gist-file containers | |||
| ## that contain files we don't want (this script will run right after the script | |||
| ## that adds the content in the first place). | |||
| if (!empty($files)) { | |||
| $files_js = preg_replace("/\./", "-", "[ '".implode("', '",$files)."' ]"); | |||
| $out .= Keep(" | |||
| <script> | |||
| var files = $files_js; | |||
| document.querySelector('#gistEmbedScript_$id').parentElement.nextSibling.querySelectorAll('div.gist-file').forEach(function (gist_file_block) { | |||
| if (files.indexOf(gist_file_block.querySelector('div.file').id.substring(5)) == -1) | |||
| gist_file_block.parentElement.removeChild(gist_file_block); | |||
| }); | |||
| </script> | |||
| "); | |||
| } | |||
| ## Specifying line numbers only works if we're displaying a single file only. | |||
| if (!empty($line_numbers) || !empty($hl_line_numbers)) { | |||
| $line_numbers_js = "[ ".implode(", ",$line_numbers)." ]"; | |||
| $hl_line_numbers_js = "[ ".implode(", ",$hl_line_numbers)." ]"; | |||
| $out .= Keep(" | |||
| <script> | |||
| if (document.querySelector('#gistEmbedScript_$id').parentElement.nextSibling.querySelectorAll('div.gist-file').length == 1) { | |||
| var num_lines = document.querySelector('#gistEmbedScript_$id').parentElement.nextSibling.querySelector('div.gist-file').querySelectorAll('.js-file-line-container tr').length; | |||
| var line_numbers = $line_numbers_js; | |||
| var to_end_from = $to_end_from; | |||
| if (to_end_from >= 0) | |||
| line_numbers = [...line_numbers, ...[...Array(num_lines - to_end_from)].map((_, i) => to_end_from + i)]; | |||
| var hl_line_numbers = $hl_line_numbers_js; | |||
| var hl_to_end_from = $hl_to_end_from; | |||
| if (hl_to_end_from >= 0) | |||
| hl_line_numbers = [...hl_line_numbers, ...[...Array(num_lines - hl_to_end_from)].map((_, i) => hl_to_end_from + i)]; | |||
| document.querySelector('#gistEmbedScript_$id').parentElement.nextSibling.querySelector('div.gist-file').querySelectorAll('.js-file-line-container tr').forEach(function (line, i) { | |||
| // Highlight specified line ranges (if any have been specified via the hl= parameter). | |||
| if (hl_line_numbers.indexOf(i) != -1) | |||
| line.children[1].className += ' gist-embed-highlighted-line'; | |||
| // Filter specified line ranges (if any have been specified via the lines= parameter). | |||
| if (line_numbers.length > 0 && line_numbers.indexOf(i) == -1) | |||
| line.parentElement.removeChild(line); | |||
| }); | |||
| } | |||
| </script> | |||
| "); | |||
| } | |||
| GistEmbedAppendFooter(); | |||
| } | |||
| global $HTMLStylesFmt; | |||
| if (!$raw && $noFooter) { | |||
| $HTMLStylesFmt['gist-embed'][] = "#gistEmbed_$id .gist-meta { display: none; }\n"; | |||
| $HTMLStylesFmt['gist-embed'][] = "#gistEmbed_$id .gist-data { border-bottom: none; border-radius: 2px; }\n"; | |||
| } | |||
| if (!$raw && $noLineNumbers) { | |||
| $HTMLStylesFmt['gist-embed'][] = "#gistEmbed_$id td.js-line-number { display: none; }\n"; | |||
| } | |||
| GistEmbedInjectStyles(); | |||
| $id++; | |||
| return $out; | |||
| } | |||
| function GistEmbedAppendFooter() { | |||
| static $ran_once = false; | |||
| if (!$ran_once) { | |||
| global $HTMLFooterFmt; | |||
| $HTMLFooterFmt[] = | |||
| "<script> | |||
| document.querySelectorAll('div.gist').forEach(function (embed) { | |||
| if (embed.previousSibling && embed.previousSibling.tagName == 'P') { | |||
| embed.id = 'gistEmbed_' + embed.previousSibling.firstChild.id.substring(16); | |||
| } | |||
| }); | |||
| </script>\n"; | |||
| } | |||
| $ran_once = true; | |||
| } | |||
| function GistEmbedInjectStyles() { | |||
| static $ran_once = false; | |||
| if (!$ran_once) { | |||
| global $HTMLStylesFmt, $GistEmbedHighlightStyle; | |||
| $styles = " | |||
| .gistRaw .gist-embed-highlighted-line { $GistEmbedHighlightStyle display: inline-block; width: calc(100% + 4px); padding-left: 4px; margin-left: -4px; } | |||
| .gist tr .gist-embed-highlighted-line { $GistEmbedHighlightStyle } | |||
| "; | |||
| $HTMLStylesFmt['gist-embed'][] = $styles; | |||
| } | |||
| $ran_once = true; | |||
| } | |||
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