Corruption in writing xml issue with tinyxml and validating xml file for corruption

[niraj]

I have experienced two problem

1. While writting xml files to the disk with Tiny xml some tag data or not properly written into the file . Some time child tag is written after parent child. Is there any way to fix this issue.

2. Also is it possible to validate the xml file whether it is corrupt or not with tiny xml

[Carlos Bernard]

When using TinyXML (a lightweight XML parser and writer), you might encounter situations where tags or data are not properly written into the XML file. This can happen for several reasons, and understanding the common pitfalls can help you troubleshoot the issue. Modern Learning

Here are some common reasons for TinyXML not writing tags or data correctly:

1. Incorrect Document Structure
   TinyXML requires a properly structured document to write correctly. If elements are not correctly nested or lack a root element, it may not output the file as expected.
   Make sure you’ve properly created a TiXmlDocument object and added child elements in a logical, hierarchical structure.
2. Buffer Not Flushed
   In some cases, TinyXML might buffer data before writing it out to a file. Calling SaveFile() on your TiXmlDocument object will flush this buffer and ensure data is written to the file.
3. Misuse of Elements and Text Nodes
   TinyXML treats text and element nodes differently. If you’re using the wrong type (e.g., adding a text node where an element node is expected), data might not appear correctly.
   For example, when adding content to an element, ensure you're using TiXmlText if you need to add raw text.
4. File Permissions or File System Errors
   Sometimes, file permissions or issues with the file path can prevent TinyXML from writing correctly. Make sure that the path to the file is accessible and writable by your program.
5. Empty or Null Data
   TinyXML may not write empty or null elements, attributes, or text. Check if any values you’re trying to write are unintentionally empty or null.
6. Improper Closing or Misplaced SaveFile() Call
   Ensure that you’re calling SaveFile() on the correct document object and that the document object is properly initialized. If SaveFile() is called on an empty or improperly set up document, the output file may be incomplete or empty.
7. Incompatible TinyXML Version
   If you’re using an older version of TinyXML or TinyXML-2, there might be bugs or limitations that affect data writing. Consider upgrading to the latest version if possible.
   Example of Proper TinyXML Usage:
   Here’s an example of how to structure your code to ensure proper writing:

cpp
Copy code
TiXmlDocument doc;
TiXmlElement* root = new TiXmlElement("Root");
doc.LinkEndChild(root);

TiXmlElement* child = new TiXmlElement("Child");
root->LinkEndChild(child);

TiXmlText* text = new TiXmlText("Some data");
child->LinkEndChild(text);

// Make sure to save the file
doc.SaveFile("output.xml");
Following these guidelines should help you ensure that TinyXML correctly writes data into the file.