commit fa11251b474626b5d570cee37daeb11aaf09139a
parent 4a883ac674296b08a2d4793c3a4f18d3b3bb756b
Author: Friedel Schön <[email protected]>
Date: Tue, 30 May 2023 13:40:07 +0200
templating
Diffstat:
5 files changed, 127 insertions(+), 50 deletions(-)
diff --git a/Lollipop/Template.php b/Lollipop/Template.php
@@ -0,0 +1,115 @@
+<?php
+namespace Lollipop {
+use ErrorException;
+ Class Template{
+ function template(string $uri, array $data) : string{
+ /* this function takes a uri and a string array data */
+ /* opens a stream to the uri specified file and stores the content in $file*/
+
+ return $this->insert_data(file_get_contents($uri), $data);
+ }
+
+ private function insert_data(string $file, array $data):string{
+ $html = "";
+ $filesize = strlen($file);
+
+ for($i = 0; $i < $filesize-1; $i++){
+ if ($file[$i] == '{' && $file[$i + 1] == '{') {
+ for ($j = $i; $j < $filesize-1; $j++) {
+ if ($file[$j] == '}' && $file[$j + 1] == '}') {
+ $html .= $this->parse_template(trim(substr($file, $i + 2, $j - $i - 2)), $data);
+ $i = $j + 1;
+ break;
+ }
+ }
+ } else {
+ $html .= $file[$i];
+ }
+ }
+ return $html;
+ }
+
+ private function parse_template(string $expr, array $data) {
+ $tokens = [];
+ $in_string = false;
+ $buffer = '';
+
+ foreach (str_split($expr) as $c) {
+ if ($c == '"' && !$in_string) { // string start
+ $in_string = true;
+ } else if ($c == '"') { // string end
+ $in_string = false;
+ } else if ($c == ' ' && !$in_string) {
+ if ($buffer) {
+ $tokens[] = $buffer;
+ $buffer = '';
+ }
+ } else {
+ $buffer .= $c;
+ }
+ }
+ if ($buffer)
+ $tokens[] = $buffer;
+
+ return $this->eval_tokens($tokens, $data);
+ }
+
+ private function eval_tokens(array $tokens, array $data) {
+ $funcs = [
+ "add" => function(array &$tokens) {
+ $right = array_pop($tokens);
+ $left = array_pop($tokens);
+
+ if ($left == null || $right == null)
+ throw new ErrorException("Stack is empty");
+
+ if (is_numeric($left) && is_numeric($right))
+ return intval($left) + intval($right);
+
+ return $left . $right;
+ },
+ "sub" => function(array &$tokens) {
+ $right = array_pop($tokens);
+ $left = array_pop($tokens);
+
+ if ($left == null || $right == null)
+ throw new ErrorException("Stack is empty");
+
+ return intval($left) - intval($right);
+ },
+ "mul" => function(array &$tokens) {
+ $right = array_pop($tokens);
+ $left = array_pop($tokens);
+
+ if ($left == null || $right == null)
+ throw new ErrorException("Stack is empty");
+
+ return intval($left) * intval($right);
+ },
+ "div" => function(array &$tokens) {
+ $right = array_pop($tokens);
+ $left = array_pop($tokens);
+
+ if ($left == null || $right == null)
+ throw new ErrorException("Stack is empty");
+
+ return intval($left) / intval($right);
+ },
+ ];
+
+ $stack = [];
+ foreach ($tokens as $token) {
+ if ($token[0] != '!') {
+ $stack[] = array_key_exists($token, $data) ? $data[$token] : $token;
+ } else {
+ $stack[] = $funcs[substr($token, 1)]($stack);
+ }
+ }
+
+ if (sizeof($stack) != 1)
+ throw new ErrorException("Stack-size is not 1");
+
+ return $stack[0];
+ }
+ }
+}
+\ No newline at end of file
diff --git a/Template.php b/Template.php
@@ -1,34 +0,0 @@
-<?php
-namespace Lollipop {
-use ErrorException;
- Class Template{
- function template(string $uri, array $data) : string{
- /* this function takes a uri and a string array data */
- /* opens a stream to the uri specified file and stores the content in $file*/
-
- $tag = "<template>";
- return $this->insert_data($tag, file_get_contents($uri), $data);
- }
- private function insert_data(string $tag, int $filesize, string $file, array $data):string{
- $tag_len = strlen($tag) - 1;
- $html = "";
- $c = 0;
-
- for($i = 0; $i < $filesize; $i++){
- if($file[$i] == "<"){
- $j = 0;
- while($i + $j < $filesize && $file[$i + $j] == $tag[$j]){
- if($j == $tag_len){
- $html .= $data[$c];
- $c++;
- break;
- }
- $j++;
- }
- }
- $html .= $file[$i];
- }
- return $html;
- }
- }
-}
-\ No newline at end of file
diff --git a/index.php b/index.php
@@ -13,5 +13,9 @@ $router->addRoute(["GET", "POST"], "/logout", "logic/logout.php");
$router->addRoute(["GET", "POST"], "/course/search", "views/search_course.php");
$router->addRoute(["GET", "POST"], "/course/:enroll/enroll", "views/search_course.php");
$router->addRoute(["GET", "POST"], "/course/:unsubscribe/unsubscribe", "views/search_course.php");
+$router->addRoute(["GET", "POST"], "/test/template/:hello", function($vars) {
+ $t = new Lollipop\Template();
+ echo $t->template("template_test.html", $vars);
+});
$router->route();
\ No newline at end of file
diff --git a/template.php b/template.php
@@ -0,0 +1,6 @@
+<?php
+
+include_once "Lollipop/Template.php";
+
+$t = new Lollipop\Template;
+echo $t->template("template_test.html", [ "hello" => "world" ]);
diff --git a/template_test.html b/template_test.html
@@ -1,14 +1 @@
-<html>
- <head>
-
- </head>
- <body>
- <h1> dit is een testpagina</h1>
- <p> template data nr1</p>
- <template></template>
- <p> template data nr2</p>
- <template></template>
- <p> template data nr3</p>
- <template></template>
- </body>
-</html>
-\ No newline at end of file
+data: {{ 3 !add }}
