Relocated template engine

2020-12-26 07:43:55 +01:00
parent 55f70d036b
commit de76659d05
1 changed files with 0 additions and 0 deletions
@@ -0,0 +1,140 @@
+<?php
+class template_engine
+{
+	public static $base_block = "BASE";
+	
+	public $blocks = array();
+	public $templates = array();
+	
+	private $block_pattern = '/\w*/';
+	private $block_pattern_chars = '[\w,_,-]*';
+	private $block_pattern_prefix = '{{ ';
+	private $block_pattern_suffix = ' }}';
+	private $source_files = array();
+	private $template_folder = "./templates/";
+	
+	private function init_templates(array $source_files) : void
+	{
+		foreach ($source_files as $name => $source)
+		{
+			$this->templates[$name] = file_get_contents($source);
+		}
+	}
+	
+	private function discover_templates(string $template_folder) : void
+	{
+		foreach (glob($template_folder."*") as $file)
+		{
+			$info = pathinfo($file);
+			$template_id = strtoupper(str_replace("-", "_", $info["filename"]));
+			$this->source_files[$template_id] = $file;
+		}
+	}
+	
+	public function __construct()
+	{
+		$this->block_pattern = '/' . $this->block_pattern_prefix . $this->block_pattern_chars . $this->block_pattern_suffix . '/';
+		$this->discover_templates($this->template_folder);
+		$this->init_templates($this->source_files);
+		$this->new();
+	}
+	
+	public function new() : void
+	{
+		$this->blocks = array();
+		foreach ($this->templates as $key => $template)
+		{
+			$this->blocks[$key] = $template;
+		}
+		// $this->blocks[self::$base_block] = $this->templates[self::$base_block];
+	}
+	
+	public function get_block_names() : array
+	{
+		$all_matches = array();
+		foreach ($this->blocks as $block)
+		{
+			$matches = array();
+			preg_match_all($this->block_pattern, $block, $matches);
+			$all_matches = array_merge($all_matches, $matches[0]);
+		}
+		
+		$block_names = array();
+		foreach (array_unique($all_matches) as $match)
+		{
+			$block_name = str_replace([$this->block_pattern_prefix, $this->block_pattern_suffix], "", $match);
+			$block_names[$block_name] = array_key_exists($block_name, $this->blocks) ? true : false;
+		}
+		return $block_names;
+	}
+	
+	public function set_block_template(string $block, string $template) : void
+	{
+		$this->blocks[$block] = $this->templates[$template];
+	}
+	
+	public function set_block(string $block, string $content) : void
+	{
+		$this->blocks[$block] = $content;
+	}
+	
+	public function append_block(string $block, string $content) : void
+	{
+		if (empty($this->blocks[$block])) $this->blocks[$block] = "";
+		$this->blocks[$block] .= $content;
+	}
+	
+	public function append_block_template(string $block, string $template) : void
+	{
+		if (empty($this->blocks[$block])) $this->blocks[$block] = "";
+		$this->blocks[$block] .= $this->templates[$template];
+	}
+	
+	public function append_built_block(string $block, string $block_name) : void
+	{
+		$this->append_block($block, $this->build_block($block_name));
+	}
+	
+	public function append_argumented_block(string $block, string $block_name, array $args) : void
+	{
+		$this->append_block($block, $this->build_argumented_block($block_name, $args));
+	}
+	
+	public function build_argumented_block(string $block, array $args) : string
+	{
+		foreach ($args as $key => $value) $this->set_block($key, $value);
+		return $this->build_block($block);
+	}
+	
+	public function build_block(string $block) : string
+	{
+		$matches = array();
+		$html = $this->blocks[$block];
+		
+		$from = array();
+		$to = array();
+		foreach ($this->get_block_names() as $block_name => $has_block)
+		{
+			$from[] = $this->block_pattern_prefix . $block_name . $this->block_pattern_suffix;
+			if ($has_block) $to[] = $this->blocks[$block_name];
+			else $to[] = "";
+		}
+		while (preg_match_all($this->block_pattern, $html) > 0)
+		{
+			$html = str_replace($from, $to, $html);
+		}
+		
+		return $html;
+	}
+	
+	public function get_raw_html() : string
+	{
+		return $this->build_block(self::$base_block);
+	}
+	
+	public function get_html() : string
+	{
+		$strip = [ "\t" ];
+		return str_replace($strip, "", $this->get_raw_html());
+	}
+}