co🗁e: (XML) File Handling

5-production-stable

Brought to you by: aliazzz, hermsen, i-campbell

MIT License

co📁e - XML File Handling

Authors:

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A simple yet flexible library to compose or parse XML data in CODESYS based PLC's via the following function blocks;

FB_Filecontrol: provides a generic and easy way to open, close, read, write files without hassle.
FB_StreamBuffer: provides a generic and easy way to compose file contents, this enables you to build your own file content parser more efficiently.
FB_XmlControl: provides a complete solution to read, write, parse and compose xml-based files.

The solution can handle xml-parsing in two ways:

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

chosen method	advantage	disadvantage
1	fast and relatively easy to implement	Larger PLC memory requirement due to loading the file into a pre-allocated memory-buffer
2	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

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