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Parse Method

Summary

Parse the structure of this document and read the bookmarks and table of content.

Syntax
C#
C++/CLI
Java
Python
public void Parse() 
public:  
   void Parse() 
public void parse() 
def Parse(self): 
Remarks

Bookmarks will contain an empty list if the structure of the document has not been parsed yet (the value of IsParsed is false). This list will be populated with the items found in the original document when Parse is called and the value of ParseBookmarks is true (the default value). When Parse returns, the value of IsParsed will be set to true.

Parse will also parse the document for any links found in the pages if the value of ParsePageLinks is true (the default value), these can be obtain through the DocumentPage.GetLinks method.

Note that calling this method will propogate down to each child document (if supported).

Example
C#
using Leadtools; 
using Leadtools.Caching; 
using Leadtools.Document; 
 
 
public void DocumentExample() 
{ 
   var cache = GetCache(); 
 
   var policy = new CacheItemPolicy(); 
   policy.AbsoluteExpiration = DateTime.Now + new TimeSpan(0, 0, 1); 
   policy.SlidingExpiration = new TimeSpan(0, 0, 1); 
 
   var options = new LoadDocumentOptions(); 
   options.CachePolicy = policy; 
   options.Cache = cache; 
 
   if(options.Cache == null) 
   { 
      options.Cache = DocumentFactory.Cache; 
   } 
 
   string documentId = null; 
 
   using (var document = DocumentFactory.LoadFromFile(Path.Combine(LEAD_VARS.ImagesDir, "Leadtools.pdf"), options)) 
   { 
      document.GetDocumentFileName(); 
      document.IsReadOnly = false; 
      document.AutoDeleteFromCache = false; 
      // DocumentImages reference 
      document.Images.DefaultBitsPerPixel = 24; 
 
      Console.WriteLine(document.Images.IsResolutionsSupported); 
      Console.WriteLine(document.Images.IsSvgSupported); 
 
      // Check if the document has a stream in memory 
      if (document.HasStream) 
      { 
         // Get the document stream 
         document.GetDocumentStream(); 
      } 
 
      // Indicate whether the document is using the cache or not 
      Console.WriteLine(document.HasCache); 
             
      //Indicate if the document was downloaded 
      Console.WriteLine(document.IsDownloaded); 
 
      // Gets a value that determines whether the document structure is supported 
      Console.WriteLine(document.IsStructureSupported); 
 
      // Output metadata values (DocumentMetadata reference) 
      Console.WriteLine(document.Metadata.Values.Count); 
 
      // Get the Mime type of the document 
      Console.WriteLine(document.MimeType); 
 
      // Parse document structure data (DocumentStructure reference) 
      foreach(DocumentBookmark bookmark in document.Structure.Bookmarks) 
      { 
         bookmark.Title = null; 
         bookmark.FontStyles = DocumentFontStyles.Normal; 
         document.Structure.Bookmarks.Add(bookmark); 
         Console.WriteLine(bookmark.Children); 
         Console.WriteLine(bookmark.Target); 
         Console.WriteLine(document.Structure.Bookmarks.Count); 
         Console.WriteLine(document.Structure.IsParsed); 
         Console.WriteLine(document.Structure.ParseBookmarks); 
      } 
 
      document.Structure.Parse(); 
 
      // Get the document URI 
      Console.WriteLine(document.Uri); 
 
      // Get each DocumentPage object (DocumentPage & DocumentPages reference) 
      foreach (DocumentPage page in document.Pages) 
      { 
         // Get the page as a raster image at the specified resolution 
         page.GetImage(0); 
         // Get the page as an Svg with specified options 
         page.GetSvg(null); 
         // Flip this page horizontally 
         page.Reverse(); 
         // Use this method to add an array of links for this page 
         page.SetLinks(null); 
         page.IsLinksModified = false; 
         page.Resolution = 0; 
         page.ViewPerspective = RasterViewPerspective.TopLeft; 
         page.SetLinks(page.GetLinks()); 
         Console.WriteLine($"Page Number: {page.PageNumber}, Original PageNumber: {page.OriginalPageNumber}, Size of the page: {page.Size}"); 
      } 
 
      PrintOutDocumentInfo(document); 
 
      documentId = document.DocumentId; 
      document.SaveToCache(); 
   } 
 
   System.Threading.Thread.Sleep(2000); 
 
   var loadFromCacheOptions = new LoadFromCacheOptions(); 
   loadFromCacheOptions.Cache = cache; 
   loadFromCacheOptions.DocumentId = documentId; 
   using (var document = DocumentFactory.LoadFromCache(loadFromCacheOptions)) 
   { 
      if (null == document) 
      { 
         Console.WriteLine("Cached document was expired and deleted!"); 
      } 
   } 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images"; 
} 
Requirements

Target Platforms

Help Version 22.0.2023.4.21
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© 1991-2023 LEAD Technologies, Inc. All Rights Reserved.

Leadtools.Document Assembly

Products | Support | Contact Us | Intellectual Property Notices
© 1991-2023 LEAD Technologies, Inc. All Rights Reserved.