289 lines
12 KiB
PHP
289 lines
12 KiB
PHP
<?php
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/* =================================================================================
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* License: GPL-2.0 license
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* Author: 众产® https://ciy.cn/code
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* Version: 0.7.8
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====================================================================================*/
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/*
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* web.php 常用公共函数库
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*
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* 页面相关
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* diehtml 报错输出页面/跳转
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* markdown_convert Markdown转换为HTML
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* inzone
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*/
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namespace ciy;
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class web {
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public static function diehtml($msg, $title = '提示信息') {
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echo '<!DOCTYPE html><html><head><meta http-equiv="Content-type" content="text/html; charset=utf-8">';
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echo '<title>' . $title . '</title><meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0"/><meta name="format-detection" content="telephone=no,email=no"/>';
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echo '<meta name="apple-mobile-web-app-capable" content="yes" /></head><body>';
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$selfname = substr($_SERVER['PHP_SELF'], strrpos($_SERVER['PHP_SELF'], '/') + 1, -4);
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echo '<fieldset style="margin:2em;border-radius: 0.5em;border: 1px solid #eeeeee;line-height:2em;"><legend style="font-size: 1.3em;padding: 0.2em 0.5em;">' . $title . '</legend><div style="padding:0 15px 15px 15px;"><b>来源： ' . str_replace('.php', '', $selfname) . '</b><br/>' . $msg . '</div></fieldset>';
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echo '</body></html>';
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die();
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}
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public static function markdown_convert($markdown) {
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if (substr($markdown, 0, 4) == '[MD]')
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$markdown = substr($markdown, 4);
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$mds = explode("\n", trim($markdown));
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$html = '';
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foreach ($mds as $mi) {
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if (empty($mi)) {
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$html .= '<br/>';
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continue;
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}
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if ($mi[0] == '#') { //#一级标题 ##二级标题 ###三级标题
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if (substr($mi, 0, 3) == '###')
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$html .= '<h3 class="md-h3">' . self::markdown_convertcode(substr($mi, 3)) . '</h3>';
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else if (substr($mi, 0, 2) == '##')
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$html .= '<h2 class="md-h2">' . self::markdown_convertcode(substr($mi, 2)) . '</h2>';
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else if ($mi[1] == 'c')
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$html .= '<h1 class="md-h1" style="text-align:center;">' . self::markdown_convertcode(substr($mi, 2)) . '</h1>';
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else if ($mi[1] == 'r')
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$html .= '<h1 class="md-h1" style="text-align:right;">' . self::markdown_convertcode(substr($mi, 2)) . '</h1>';
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else
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$html .= '<h1 class="md-h1">' . self::markdown_convertcode(substr($mi, 1)) . '</h1>';
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} else if ($mi[0] == '@') { //c居中，r靠右
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if ($mi[1] == 'c')
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$html .= '<div style="text-align:center;">' . self::markdown_convertcode(substr($mi, 2)) . '</div>';
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else if ($mi[1] == 'r')
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$html .= '<div style="text-align:right;margin-right:1em;">' . self::markdown_convertcode(substr($mi, 2)) . '</div>';
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else
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$html .= substr($mi, 1);
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} else if ($mi[0] == '!') { //!图片地址 !图片地址|ALT文字
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$mis = explode('|', $mi);
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$url = $mis[0];
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$url = substr($url, 1);
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$alt = '';
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if (isset($mis[1]))
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$alt = ' alt="' . str_replace('"', "", $mis[1]) . '"';
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$html .= '<div style="font-size:0"><img src="' . $url . '" style="max-width:100%;"' . $alt . '/></div>';
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} else if ($mi[0] == '_') { //HTML
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$html .= substr($mi, 1);
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} else {
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$html .= '<div class="md-content">' . self::markdown_convertcode($mi) . '</div>';
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}
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}
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return $html;
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}
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private static function markdown_convertcode($md) {
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$bcode = false;
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$md = str_replace(' ', ' ', $md);
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$md = str_replace(' ', ' ', $md);
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while (true) {
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$ind = strpos($md, '`');
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if ($ind === false)
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break;
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$el = '<code class="md-code">';
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if ($bcode) {
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$bcode = false;
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$el = '</code>';
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} else
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$bcode = true;
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$md = substr($md, 0, $ind) . $el . substr($md, $ind + 1);
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}
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if ($bcode)
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$md .= '</code>';
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while (true) {
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$ind = strpos($md, '\\u');
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if ($ind === false)
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break;
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$ind2 = strpos($md, '\\u', $ind + 1);
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if ($ind2 === false)
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break;
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$mis = explode('|', substr($md, $ind + 2, $ind2 - $ind - 2));
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$url = $mis[0];
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$text = $url;
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if (isset($mis[1]))
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$text = $mis[1];
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if ($text[0] == '!') {
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$html = '<a href="' . $url . '" target="_blank" nofollow><img src="' . substr($text, 1) . '" style="max-width:100%;"/></a>';
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} else {
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$html = '<a href="' . $url . '" target="_blank" nofollow>' . $text . '</a>';
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}
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$md = substr($md, 0, $ind) . $html . substr($md, $ind2 + 2);
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}
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return $md;
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}
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public static function getwebtitle($db, $id) {
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$csql = new sql('a_web_seo');
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$csql->where('url', $_SERVER['REQUEST_URI']);
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$webtitrow = $db->getone($csql);
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if (is_array($webtitrow)) {
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if ($webtitrow['pagecount'] < 1)
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$webtitrow['pagecount'] = 20;
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return $webtitrow;
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}
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$csql = new sql('a_web_seo');
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$csql->where('id', $id);
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$webtitrow = $db->getone($csql);
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if (is_array($webtitrow)) {
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if ($webtitrow['pagecount'] < 1)
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$webtitrow['pagecount'] = 20;
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return $webtitrow;
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}
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$webtitrow = array();
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$webtitrow['name'] = '众产平台';
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$webtitrow['keys'] = '众产平台,众产事业';
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$webtitrow['desc'] = '众产事业网站';
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$webtitrow['pagecount'] = 30;
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return $webtitrow;
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}
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public static function titrep($str, $dat, $content = '') {
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foreach ($dat as $key => $val) {
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$str = str_replace('{' . $key . '}', $val, $str);
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}
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$str = str_replace('农业农业', '农业', $str);
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if (empty($content))
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return $str;
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$ind = strpos($str, '{content');
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if ($ind === false)
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return $str;
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$ind2 = strpos($str, '}', $ind);
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if ($ind2 === false)
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return $str;
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if ($ind2 - $ind == 8) {
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return str_replace('{content}', self::leftchinese($content), $str);
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} else {
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$len = substr($str, $ind + 8, $ind2 - $ind - 8);
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return str_replace(substr($str, $ind, $ind2 - $ind + 1), self::leftchinese($content, $len), $str);
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}
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}
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private static function leftchinese($content, $len = 0) {
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$content = htmlspecialchars_decode($content);
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$content = str_replace(" ", "", $content);
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$content = str_replace("\n", "", $content);
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$content = str_replace("\r", "", $content);
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$content = str_replace("\t", "", $content);
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$content = strip_tags($content);
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$content = trim($content);
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if ($len <= 0)
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return $content;
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if (mb_strlen($content, 'utf-8') > $len)
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return mb_substr($content, 0, $len, "utf-8");
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return $content;
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}
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public static function fillsource($str) {
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$source = explode('|', $str);
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if (!isset($source[1]))
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return $source[0];
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else
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return '<a href="' . $source[1] . '" target="_blank" nofollow>' . '转自' . $source[0] . '</a>';
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}
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public static function showh1($webtit, $artrow) {
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$h1 = self::titrep($webtit['h1'], $artrow);
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$htip = self::titrep($webtit['htip'], $artrow);
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if (empty($h1))
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echo '';
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else if ($h1[0] == '<')
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echo $h1;
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else
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echo '<h1>' . $h1 . '</h1>';
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if (empty($htip))
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echo '';
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else if ($htip[0] == '<')
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echo $htip;
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else
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echo '<div class="vhtip">' . $htip . '</div>';
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}
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public static function markdown_fromhtml($content, $baseurl) {
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$html = html::str_get_html($content);
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if ($html === false || $html === null)
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return '';
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$md = '';
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self::_html2md_child($baseurl, $html->childNodes(), $md);
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return $md;
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}
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private static function _html2md_child($baseurl, $childs, &$md) {
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if ($childs === null)
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return;
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foreach ($childs as $child) {
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if ($child->tag == 'table') {
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$md .= '_' . str_replace("\n", "", $child->outertext) . "\n";
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} else if ($child->tag == 'img') {
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if (empty(@$child->attr['src']))
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continue;
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$md .= '!' . self::urljoin($child->attr['src'], $baseurl) . '|' . @$child->attr['alt'] . "\n";
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} else if ($child->tag == 'ul') {
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//clog('find ul');
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} else {
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$divps = $child->find('div,p');
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if (count($divps) > 0) {
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$txt = trim($child->plaintext);
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self::_html2md_child($baseurl, $child->childNodes(), $md);
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} else {
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$divimgs = $child->find('img');
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foreach ($divimgs as $divimg) {
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if (empty(@$divimg->attr['src']))
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continue;
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$md .= '!' . self::urljoin($divimg->attr['src'], $baseurl) . '|' . @$divimg->attr['alt'] . "\n";
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}
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$txtpre = '';
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$txt = $child->plaintext;
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$txt = str_replace(' ', '', $txt);
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$txt = trim($txt);
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$style = @$child->attr['style'] . ',' . @$child->attr['align'];
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if (strpos($style, 'right') !== false)
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$txtpre = '@r';
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else if (strpos($style, 'center') !== false)
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$txtpre = '@c';
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if (!empty($txt)) {
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$txts = explode("\n", $txt);
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foreach ($txts as $tx) {
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$tx = trim($tx);
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while (true) {
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if (substr($tx, 0, 3) != ' ')
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break;
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$tx = substr($tx, 3);
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}
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if (empty($tx))
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continue;
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$md .= $txtpre . $tx . "\n";
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}
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}
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}
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}
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}
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}
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//相对网址转绝对网址
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public static function urljoin($srcurl, $baseurl) {
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$srcinfo = parse_url($srcurl);
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if (isset($srcinfo['scheme'])) {
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return $srcurl;
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}
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$baseinfo = parse_url($baseurl);
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$url = $baseinfo['scheme'] . '://' . $baseinfo['host'];
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if (substr($srcinfo['path'], 0, 1) == '/') {
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$path = $srcinfo['path'];
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} else {
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$path = dirname($baseinfo['path']) . '/' . $srcinfo['path'];
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}
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$rst = array();
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$path_array = explode('/', $path);
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if (!$path_array[0]) {
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$rst[] = '';
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}
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foreach ($path_array as $key => $dir) {
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if ($dir == '..') {
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if (end($rst) == '..') {
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$rst[] = '..';
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} elseif (!array_pop($rst)) {
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$rst[] = '..';
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}
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} elseif ($dir && $dir != '.') {
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$rst[] = $dir;
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}
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}
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if (!end($path_array)) {
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$rst[] = '';
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}
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$url .= implode('/', $rst);
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return str_replace('\\', '/', $url);
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}
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}
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