co📁e - (XML) File Handling

aliazzz hermsen
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co📁e - (XML) File Handling

A simple yet flexible library to enable easy file control and / or compose or parse XML data in CODESYS based PLC's via the following function blocks;

FB Usecase
FB_Filecontrol Provides the user a generic and easy way to open, close, read, write files on disk
FB_StreamBuffer Provides the user a generic and easy way to compose file contents, this enables you to build your own file content parser quickly
FB_XmlControl Provides a complete solution to read, write, parse and compose XML files.

The solution can handle xml-parsing in following manner:

1) Buffer > Filesize: Reading an entire XML file into a pre-allocated memory-buffer
2) Buffer < Filesize: Read partially chunks into a smaller and optimized buffer

Method advantage disadvantage
1) Buffer > Filesize fast and relatively easy to implement Larger PLC memory requirement due to loading the file into a pre-allocated memory-buffer
2) Buffer < Filesize widely applicable due to small memory footprint relative slow parsing of large files. Relatively more complex to implement 
Examples for both parsing methods are provided, which can act as a starting point for your implementation

Downloads hosted on github;
https://github.com/HAHermsen/co5e-XML-File-Handling

Basic library idea and coding: H.Hermsen.
bugfixes, testing: i-campbell and Aliazzz.
Additional small memory footprint file parsing: TimvH



co📁e - XML File Handling

https://www.linkedin.com/in/hahermsen

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