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- <?php
- declare(strict_types=1);
- namespace netico\Bones;
- /**
- * This basic template system gets you off to a start.
- *
- * @package bones
- * @link https://git.lattuga.net/netico/code-library/src/master/Framework
- * @copyright Copyright (c) 2016, 2022 netico <netico@riseup.net>
- * @license https://www.gnu.org/licenses/gpl-3.0.en.html GNU General Public License
- * @author netico <netico@riseup.net>
- *
- */
- class Template
- {
- private $blocks;
- private $vars;
- private $nb;
- private $template;
- /**
- * It requires the path to the template file.
- * You can refer to the TEMPLATES constant.
- *
- * @param string $template File path to template file.
- * @return void
- */
- public function __construct($template)
- {
- $this->template = $template;
- $this->nb = array();
- $this->blocks = array();
- $this->vars = array();
- }
- /**
- * The method adds a variable to the template.
- * This example describes how variables can be used within templates.
- *
- * PHP code:
- *
- * $t = new template("template.tpl");
- * $t->add("foo", "Barletta");
- * $t->output();
- *
- * HTML code:
- *
- * I love {foo}
- *
- * Output:
- *
- * I love Barletta
- *
- * @param string $key
- * @param string $value
- * @return void
- */
- public function add($key, $value)
- {
- $m = array();
- if (preg_match("/" . preg_quote('.', '/') . "/s", $key, $m) > 0) {
- $a = preg_split("/" . preg_quote('.', '/') . "/s", $key);
- $c = $a[0];
- $d = $a[1];
- $iter = $this->iter;
- $this->nb["$c"][$iter]["$d"] = array("key" => "$d", "value" => "$value");
- }
- if (preg_match("/" . preg_quote('.', '/') . "/s", $key, $m) < 1) {
- $this->vars["$key"]["key"] = $key;
- $this->vars["$key"]["value"] = $value;
- }
- }
- /**
- * This method provides support for repeating sections.
- *
- * PHP code:
- *
- * $t->section("planets");
- * $t->add("planets.name", "Neptune");
- * $t->add("planets.group", "Gas giant");
- * $t->section("planets");
- * $t->add("planets.name", "Saturn");
- * $t->add("planets.group", "Gas giant");
- *
- * HTML code
- *
- * <!-- open(planets) -->;
- * <p>Name: {name} - Group: {group}</p>
- * <!-- close(planets) -->;
- *
- * Output:
- *
- * Name: Neptune - Group: Gas giant
- * Name: Saturn - Group: Gas giant
- *
- * @param string $key
- * @return void
- */
- public function section($key)
- {
- $c = $this->load();
- $open = "/" . preg_quote('<!-- open(', '/') . $key . preg_quote(') -->', '/') . "/si";
- $close = "/" . preg_quote('<!-- close(', '/') . $key . preg_quote(') -->', '/') . "/si";
- $a = preg_split($open, $c);
- $c = $a[1];
- $a = preg_split($close, $c);
- if (empty($this->blocks["$key"]) == true) {
- $iter = 0;
- }
- if (empty($this->blocks["$key"]) == false) {
- $iter = $this->iter;
- }
- $str = '<!-- open(' . $key . ') -->';
- $str = $a[0];
- $str .= '<!-- close(' . $key . ') -->';
- $this->blocks["$key"]["content"] = $str;
- $this->iter = ($iter + 1);
- }
- /**
- * This method prints the HTML code.
- * Read https://stackoverflow.com/questions/6225351/how-to-minify-php-page-html-output,
- * that explains how to minify HTML code.
- *
- * @param string $mime
- * @return void
- */
- public function output($mime)
- {
- switch ($mime) {
- // TODO: Does it work?
- case 'XML':
- header('Content-Type: text/xml');
- break;
- case 'HTML':
- default:
- header('Content-Type: text/html');
- break;
- }
- echo $this->sanitize($this->string());
- }
- /**
- * This method also provides support for repeating sections.
- * The first parameter is an array constructed from the results of an SQL query.
- * The second parameter indicates the section with the name used in the template.
- *
- * PHP code:
- *
- * $db = new \netico\Bones\SQLite();
- * $db->sql("SELECT [id], [title], [text] FROM pages ORDER BY [id] ASC;");
- * $s->rs($db->data, "pages");
- *
- * HTML code:
- *
- * <!-- open(pages) -->
- * <h2><a name="{id}">{id}. {title}</a></h2>
- * <div>{text}</div>
- * <!-- close(pages) -->
- *
- * @param array $res
- * @param string $section
- * @return void
- */
- public function rs($res, $section)
- {
- $columns = array();
- foreach ($res as $r) {
- foreach ($r as $k => $v) {
- $columns[$k] = true;
- }
- }
- foreach ($res as $key => $v) {
- $this->section($section);
- foreach ($columns as $k => $v) {
- $this->add("$section.$k", $res["$key"]["$k"]);
- }
- }
- }
- private function load()
- {
- $t = $this->template;
- $fd = fopen("$t", "r");
- $r = fread($fd, filesize("$t"));
- fclose($fd);
- return $r;
- }
- private function replace($key, $value, $content)
- {
- $pattern = '/{' . preg_quote($key, '/') . '}/';
- return preg_replace($pattern, $value, $content);
- }
- private function string()
- {
- ksort($this->blocks);
- ksort($this->nb);
- $nca = array();
- foreach ($this->nb as $k => $r) {
- $content = $this->blocks["$k"]["content"];
- $nc = (string) "";
- // Repetitions
- foreach ($r as $repetition => $ra) {
- $tmp = $content;
- // section
- foreach ($ra as $key => $ka) {
- $pcre = $ka["key"];
- $value = $ka["value"];
- if (empty($pcre) != true && empty($value) != true) {
- $tmp = $this->replace($pcre, $value, $tmp);
- }
- }
- unset($key);
- $nc .= $tmp;
- }
- unset($repetition);
- $nca["$k"]["content"] = $nc;
- }
- $text = $this->load();
- foreach ($nca as $k => $v) {
- $content = $this->blocks["$k"]["content"];
- $content = '/' . preg_quote($content, '/') . '/';
- $nc = $v["content"];
- $text = preg_replace($content, $nc, $text);
- }
- foreach ($this->vars as $k => $v) {
- $pcre = $v["key"];
- $value = $v["value"];
- $text = $this->replace($pcre, $value, $text);
- }
- return $text;
- }
- private function sanitize($buffer)
- {
- $search = array(
- '/\>[^\S ]+/s', // strip whitespaces after tags, except space
- '/[^\S ]+\</s', // strip whitespaces before tags, except space
- '/(\s)+/s', // shorten multiple whitespace sequences
- '/<!--(.|\s)*?-->/' // Remove HTML comments
- );
- $replace = array(
- '>',
- '<',
- '\\1',
- ''
- );
- $buffer = preg_replace($search, $replace, $buffer);
- return $buffer;
- }
- }
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