The first part is reading the file into memory and creating an XML "tree". The second part is to process the tree and extract the data from it. This function reads the XML file, and returns the tree. The tree is represented as a number, the actual tree structure and data is managed by LiveCode and so we don't need to worry about it.
Note that this code doesn't do anything just yet, because we haven't yet implemented the function readPreferencesToXMLTree and the command processPreferencesTree. Next, we implement a function to read the XML. This is done in two steps, first the file is read into a variable like any other text file would be, secondly, an XML "tree" is created from the file. This tree allows us to manipulate the XML data easily. We use a series of calls to the XML library to extract each piece of information from the tree.
The data loaded is displayed in the "Information" field but is not applied in this lesson. Use the search and replace functionality within LiveCode to remove any characters or text that you think should not be present.
You can do this because XML files are text files. You can then process the XML data as you require. Thanks for your reply. That is what I have been doing, but wasn't sure if it was the correct way to go about it. I don't know why the code I copied over does not appear above but it was tags about xml and soap, and it is these that I have removed and replaced at both ends of the document with my own root node. View in admin portal Edit content on web Edit in desktop.
LiveCode Lessons. Search term. How to read in data from an XML file loadPreferences. Create a stack with a button and a field. Create an XML file to use as an example. Tell the button to load the file when the user clicks. Begin the script with the following code: 1. When the button is clicked, load up the preferences and put them into the field on mouseUp loadPreferences end mouseUp 2. Load the preferences file There are two parts to loading the preferences file.
This will free up the memory that the tree was using and prevent our application using more memory than it needs or "leaking" memory by creating multiple trees without closing any of them. Add the code to read the XML file as below. Note that we restore the itemDelimiter to comma its default value afterwards. This is not essential but its good practice to avoid tricky bugs that can arise due to unexpected delimiter values.
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