- Cache of pdf pages also consider file size and modification time

README.md

@@ -2,7 +2,7 @@
 
 nw-page-editor - Simple app for visual editing of Page XML files.
 
-Version: 2020.12.07
+Version: 2021.02.17
 
 
 # Description

js/page-canvas.js

@@ -1,7 +1,7 @@
 /**
  * Javascript library for viewing and interactive editing of Page XMLs.
  *
- * @version $Version: 2020.12.07$
+ * @version $Version: 2021.02.17$
  * @author Mauricio Villegas <mauricio_ville@yahoo.com>
  * @copyright Copyright(c) 2015-present, Mauricio Villegas <mauricio_ville@yahoo.com>
  * @license MIT License
@@ -23,7 +23,7 @@
   'use strict';
 
   var
-  version = '$Version: 2020.12.07$'.replace(/^\$Version. (.*)\$/,'$1');
+  version = '$Version: 2021.02.17$'.replace(/^\$Version. (.*)\$/,'$1');
 
   /// Set PageCanvas global object ///
   if ( ! global.PageCanvas )
@@ -225,6 +225,11 @@
           canvas.height = imgHeight;
           canvas.width = imgWidth;
 
+          try {
+            var fstat = require('fs').statSync(pdfPagePath.replace(/^file:\/\//, '').replace(/\[[0-9]+]$/, ''));
+            pdfPagePathSize += ':'+fstat.size+':'+fstat.mtimeMs;
+          } finally {}
+
           page.render({ canvasContext: context, viewport: viewport })
             .then( function () {
               canvas.toBlob( function(blob) {
@@ -290,7 +295,12 @@
       pageNum = /]$/.test(image.attr('data-rhref')) ? parseInt(image.attr('data-rhref').replace(/.*\[([0-9]+)]$/,'$1'))+1 : 1;
 
       /// Try to get pdf page from cache ///
-      // @todo Auto clear and update of cache (update if file change date is different, remove cached pages that were stored days ago, remove cached oldes pages to limit cache storage use)
+
+      try {
+        var fstat = require('fs').statSync(url.replace(/^file:\/\//, ''));
+        pdfPagePathSize += ':'+fstat.size+':'+fstat.mtimeMs;
+      } finally {}
+
       var request = new Request(pdfPagePathSize.replace(/^file:\/\//,'http://file'));
       if ( typeof cached === 'undefined' ) {
         caches.match(request).then( response => pdfLoader( image, onLoad, typeof response === 'undefined' ? false : response ) );

package.json

@@ -1,6 +1,6 @@
 {
   "name": "nw-page-editor",
-  "version": "2020.12.07",
+  "version": "2021.02.17",
   "description": "Simple app for visual editing of Page XML files",
   "main": "./html/index.html#1",
   "author": "Mauricio Villegas <mauricio_ville@yahoo.com>",

web-app/common.inc.php

@@ -2,13 +2,13 @@
 /**
  * Common code to be executed by other php scripts.
  *
- * @version $Version: 2020.12.07$
+ * @version $Version: 2021.02.17$
  * @author Mauricio Villegas <mauricio_ville@yahoo.com>
  * @copyright Copyright(c) 2017-present, Mauricio Villegas <mauricio_ville@yahoo.com>
  * @license MIT License
  */
 
-$version = str_replace('Version: ','',"Version: 2020.12.07");
+$version = str_replace('Version: ','',"Version: 2021.02.17");
 $v = '?v='.$version;
 
 /// User authentication ///