<?php
+/**
+ * Get cURL callback function for CURLOPT_WRITEFUNCTION
+ *
+ * @param string $charset to extract from the downloaded page (reference)
+ * @param string $title to extract from the downloaded page (reference)
+ * @param string $curlGetInfo Optionnaly overrides curl_getinfo function
+ *
+ * @return Closure
+ */
+function get_curl_download_callback(&$charset, &$title, $curlGetInfo = 'curl_getinfo')
+{
+ $isRedirected = false;
+ /**
+ * cURL callback function for CURLOPT_WRITEFUNCTION (called during the download).
+ *
+ * While downloading the remote page, we check that the HTTP code is 200 and content type is 'html/text'
+ * Then we extract the title and the charset and stop the download when it's done.
+ *
+ * @param resource $ch cURL resource
+ * @param string $data chunk of data being downloaded
+ *
+ * @return int|bool length of $data or false if we need to stop the download
+ */
+ return function (&$ch, $data) use ($curlGetInfo, &$charset, &$title, &$isRedirected) {
+ $responseCode = $curlGetInfo($ch, CURLINFO_RESPONSE_CODE);
+ if (!empty($responseCode) && in_array($responseCode, [301, 302])) {
+ $isRedirected = true;
+ return strlen($data);
+ }
+ if (!empty($responseCode) && $responseCode !== 200) {
+ return false;
+ }
+ // After a redirection, the content type will keep the previous request value
+ // until it finds the next content-type header.
+ if (! $isRedirected || strpos(strtolower($data), 'content-type') !== false) {
+ $contentType = $curlGetInfo($ch, CURLINFO_CONTENT_TYPE);
+ }
+ if (!empty($contentType) && strpos($contentType, 'text/html') === false) {
+ return false;
+ }
+ if (!empty($contentType) && empty($charset)) {
+ $charset = header_extract_charset($contentType);
+ }
+ if (empty($charset)) {
+ $charset = html_extract_charset($data);
+ }
+ if (empty($title)) {
+ $title = html_extract_title($data);
+ }
+ // We got everything we want, stop the download.
+ if (!empty($responseCode) && !empty($contentType) && !empty($charset) && !empty($title)) {
+ return false;
+ }
+
+ return strlen($data);
+ };
+}
+
/**
* Extract title from an HTML document.
*
}
/**
- * Determine charset from downloaded page.
- * Priority:
- * 1. HTTP headers (Content type).
- * 2. HTML content page (tag <meta charset>).
- * 3. Use a default charset (default: UTF-8).
+ * Extract charset from HTTP header if it's defined.
*
- * @param array $headers HTTP headers array.
- * @param string $htmlContent HTML content where to look for charset.
- * @param string $defaultCharset Default charset to apply if other methods failed.
+ * @param string $header HTTP header Content-Type line.
*
- * @return string Determined charset.
+ * @return bool|string Charset string if found (lowercase), false otherwise.
*/
-function get_charset($headers, $htmlContent, $defaultCharset = 'utf-8')
+function header_extract_charset($header)
{
- if ($charset = headers_extract_charset($headers)) {
- return $charset;
+ preg_match('/charset="?([^; ]+)/i', $header, $match);
+ if (! empty($match[1])) {
+ return strtolower(trim($match[1]));
}
- if ($charset = html_extract_charset($htmlContent)) {
- return $charset;
+ return false;
+}
+
+/**
+ * Extract charset HTML content (tag <meta charset>).
+ *
+ * @param string $html HTML content where to look for charset.
+ *
+ * @return bool|string Charset string if found, false otherwise.
+ */
+function html_extract_charset($html)
+{
+ // Get encoding specified in HTML header.
+ preg_match('#<meta .*charset=["\']?([^";\'>/]+)["\']? */?>#Usi', $html, $enc);
+ if (!empty($enc[1])) {
+ return strtolower($enc[1]);
}
- return $defaultCharset;
+ return false;
}
/**
- * Extract charset from HTTP headers if it's defined.
+ * Count private links in given linklist.
*
- * @param array $headers HTTP headers array.
+ * @param array|Countable $links Linklist.
*
- * @return bool|string Charset string if found (lowercase), false otherwise.
+ * @return int Number of private links.
*/
-function headers_extract_charset($headers)
+function count_private($links)
{
- if (! empty($headers['Content-Type']) && strpos($headers['Content-Type'], 'charset=') !== false) {
- preg_match('/charset="?([^; ]+)/i', $headers['Content-Type'], $match);
- if (! empty($match[1])) {
- return strtolower(trim($match[1]));
+ $cpt = 0;
+ foreach ($links as $link) {
+ if ($link['private']) {
+ $cpt += 1;
}
}
- return false;
+ return $cpt;
}
/**
- * Extract charset HTML content (tag <meta charset>).
+ * In a string, converts URLs to clickable links.
*
- * @param string $html HTML content where to look for charset.
+ * @param string $text input string.
+ * @param string $redirector if a redirector is set, use it to gerenate links.
+ * @param bool $urlEncode Use `urlencode()` on the URL after the redirector or not.
*
- * @return bool|string Charset string if found, false otherwise.
+ * @return string returns $text with all links converted to HTML links.
+ *
+ * @see Function inspired from http://www.php.net/manual/en/function.preg-replace.php#85722
*/
-function html_extract_charset($html)
+function text2clickable($text, $redirector = '', $urlEncode = true)
{
- // Get encoding specified in HTML header.
- preg_match('#<meta .*charset=["\']?([^";\'>/]+)["\']? */?>#Usi', $html, $enc);
- if (!empty($enc[1])) {
- return strtolower($enc[1]);
+ $regex = '!(((?:https?|ftp|file)://|apt:|magnet:)\S+[a-z0-9\(\)]/?)!si';
+
+ if (empty($redirector)) {
+ return preg_replace($regex, '<a href="$1">$1</a>', $text);
}
+ // Redirector is set, urlencode the final URL.
+ return preg_replace_callback(
+ $regex,
+ function ($matches) use ($redirector, $urlEncode) {
+ $url = $urlEncode ? urlencode($matches[1]) : $matches[1];
+ return '<a href="' . $redirector . $url .'">'. $matches[1] .'</a>';
+ },
+ $text
+ );
+}
- return false;
+/**
+ * Auto-link hashtags.
+ *
+ * @param string $description Given description.
+ * @param string $indexUrl Root URL.
+ *
+ * @return string Description with auto-linked hashtags.
+ */
+function hashtag_autolink($description, $indexUrl = '')
+{
+ /*
+ * To support unicode: http://stackoverflow.com/a/35498078/1484919
+ * \p{Pc} - to match underscore
+ * \p{N} - numeric character in any script
+ * \p{L} - letter from any language
+ * \p{Mn} - any non marking space (accents, umlauts, etc)
+ */
+ $regex = '/(^|\s)#([\p{Pc}\p{N}\p{L}\p{Mn}]+)/mui';
+ $replacement = '$1<a href="'. $indexUrl .'?addtag=$2" title="Hashtag $2">#$2</a>';
+ return preg_replace($regex, $replacement, $description);
+}
+
+/**
+ * This function inserts where relevant so that multiple spaces are properly displayed in HTML
+ * even in the absence of <pre> (This is used in description to keep text formatting).
+ *
+ * @param string $text input text.
+ *
+ * @return string formatted text.
+ */
+function space2nbsp($text)
+{
+ return preg_replace('/(^| ) /m', '$1 ', $text);
+}
+
+/**
+ * Format Shaarli's description
+ *
+ * @param string $description shaare's description.
+ * @param string $redirector if a redirector is set, use it to gerenate links.
+ * @param bool $urlEncode Use `urlencode()` on the URL after the redirector or not.
+ * @param string $indexUrl URL to Shaarli's index.
+
+ * @return string formatted description.
+ */
+function format_description($description, $redirector = '', $urlEncode = true, $indexUrl = '')
+{
+ return nl2br(space2nbsp(hashtag_autolink(text2clickable($description, $redirector, $urlEncode), $indexUrl)));
+}
+
+/**
+ * Generate a small hash for a link.
+ *
+ * @param DateTime $date Link creation date.
+ * @param int $id Link ID.
+ *
+ * @return string the small hash generated from link data.
+ */
+function link_small_hash($date, $id)
+{
+ return smallHash($date->format(LinkDB::LINK_DATE_FORMAT) . $id);
}
projects / github / shaarli / Shaarli.git / blobdiff