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XmlGetTagAttribute ( Xml ; Tag ; Occurrence ; Attribute )

Get an attribute value from the opening tag in xml code.

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Federico Severin - Show more from this author Sevesoftware Engineering http://www.sevesoftware.it

  Function definition: (Copy & paste into FileMaker's Edit Custom Function window)

/* Get an attribute value from the opening tag in xml code. Parameters: - Xml: the xml code. - Tag: the tag you want to analyze. - Occurrence: the occurrence of the tag in the xml. - Attribute: name of the attribute you want to retrieve. Example: Input: XmlGetTagAttribute ( "<Pizza topping=\"Tomato, mozzarella cheese.\">Margherita</Pizza>" ; "Pizza" ; 1 ; "topping") Output: "Tomato, mozzarella cheese." v1.0 18/11/22 Federico Severin */ Let ( [ _OpeningTagStart = Position ( Xml ; "<" & Tag ; 1 ; Occurrence ); _OpeningTagEnd = Position ( Xml ; ">" ; _OpeningTagStart + 1 ; 1 ); _OpeningTagLength = _OpeningTagEnd - _OpeningTagStart; _OpeningTag = Middle ( Xml ; _OpeningTagStart + 1 ; _OpeningTagLength - 1 ); _OpeningTagAttributesList = TrimAll ( Substitute ( _OpeningTag ; Tag ; "" ) ; 0 ; 0 ); _OpeningTagAttributesList = Substitute ( _OpeningTagAttributesList ; [" = " ; "="]; [" =" ; "="]; ["= " ; "="] ); _OpeningTagAttributesList = Substitute ( _OpeningTagAttributesList ; "\" " ; "¶" ); _AttributeRowNumber = PatternCount ( Left ( _OpeningTagAttributesList ; Position ( _OpeningTagAttributesList ; Attribute & "=" ; 1 ; 1 ) ); ¶ ) + 1; _AttributeRow = GetValue ( _OpeningTagAttributesList ; _AttributeRowNumber ); _AttributeFirstEqualPosition = Position ( _AttributeRow ; "=" ; 1 ; 1 ); _AttributeValue = Substitute ( Middle ( _AttributeRow ; _AttributeFirstEqualPosition + 1 ; Length ( _AttributeRow ) ) ; "\"" ; "" ) ]; If ( not IsEmpty ( Attribute ) ; _AttributeValue ; "" ) ) Click to copy

Get an attribute value from the opening tag in xml code.

Parameters:
- Xml: the xml code.
- Tag: the tag you want to analyze.
- Occurrence: the occurrence of the tag in the xml.
- Attribute: name of the attribute you want to retrieve.

Example:
Input: XmlGetTagAttribute ( "Margherita" ; "Pizza" ; 1 ; "topping")
Output: "Tomato, mozzarella cheese."

 

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