From 02b7d3f8faa007c3ece8e5450fe19ab301eaa664 Mon Sep 17 00:00:00 2001
From: Andrey Kuvshinov <delf@iMac-Andrey.local>
Date: Sat, 23 May 2020 23:22:21 +0300
Subject: [PATCH] add transform xhtml

---
 app/functions/xhtmltransform.php | 57 ++++++++++++++++++++++++++++++++
 1 file changed, 57 insertions(+)
 create mode 100644 app/functions/xhtmltransform.php

diff --git a/app/functions/xhtmltransform.php b/app/functions/xhtmltransform.php
new file mode 100644
index 0000000..9cdf774
--- /dev/null
+++ b/app/functions/xhtmltransform.php
@@ -0,0 +1,57 @@
+<?php
+
+function pagehtml($html, $page, $limit){
+
+    if ($page == 1){
+        $start = $limit;
+        $rstart = 0;
+    }    
+    else {
+        $prevpage = $page - 1;
+        $start = $prevpage * $limit;
+        $r_start = endparagraf($html, $start);
+    }
+    
+    $endpos = $page * $limit;
+    $r_end = endparagraf($html, $endpos); 
+    $len = $r_end - $r_start;
+
+    return substr($html, $r_start, $len);
+        
+}
+
+
+
+function endparagraf($html, $pos){
+
+    $end = strpos($html, '</p>', $pos);
+
+    if ($end)
+        return $end;
+    else
+        return false;
+
+}
+
+
+
+
+//удаляем xtml
+function convert2html($xfile){
+
+    if (!file_exists($xfile)){
+        return '';
+    }
+
+    $xhtml = file_get_contents($xfile);
+
+    $result = str_replace('</body>', '', $xhtml);
+    $result = str_replace('</html>', '', $xhtml);
+
+    if ($pos = strpos('<body', $result)){
+        $result = substr($result, $pos+1);
+    }
+
+    return $result;
+
+}
\ No newline at end of file