fhir_rm_tag-methods: Remove a certain xml tag

In POLAR-fhiR/fhircrackr: Handling HL7 FHIR® Resources in R

Remove a certain xml tag

Description

Removes a given xml tag from xml objects represented in a fhir_bundle_xml, fhir_bundle_list or character vector.

Usage

fhir_rm_tag(x, tag)

## S4 method for signature 'character'
fhir_rm_tag(x, tag)

## S4 method for signature 'fhir_bundle_xml'
fhir_rm_tag(x, tag)

## S4 method for signature 'fhir_bundle_list'
fhir_rm_tag(x, tag)

Arguments

x	A fhir_bundle_xml or fhir_bundle_list object or a character vector containing xml objects.
tag	A character vector of length 1 containing the tag that should be removed, e.g. "div".

Details

In the example ⁠Hello<div>Please<p>Remove Me</p></div>World!⁠ one could for example remove the tag p, resulting in ⁠Hello<div>Please</div>World!⁠or remove the div tag resulting in ⁠Hello World!⁠.

Value

An object of the same class as x where all tags matching the tag argument are removed.

See Also

fhir_rm_div()

Examples

#Example 1: Remove tag from xmls in a character vector
string <- c("Hello<div>Please<p>Remove Me</p></div> World!",
            "A<div><div><p>B</p></div>C</div>D")

fhir_rm_tag(x = string, tag = "p")




#Example 2: Remove div tags in a single fhir bundle
bundle <- fhir_unserialize(patient_bundles)[[1]]

#example bundle contains html parts in div tags:
cat(toString(bundle))

#remove html parts
bundle_cleaned <- fhir_rm_tag(x = bundle, tag = "div")

#have a look at the result
cat(toString(bundle_cleaned))





#Example 3: Remove div tags in a list of fhir bundles
bundle_list <- fhir_unserialize(patient_bundles)


#remove html parts
bundle_list_cleaned <- fhir_rm_tag(x = bundle_list, tag = "div")

#check out how much the size of the bundle list is reduced by removing html
size_with_html <- sum(sapply(bundle_list, function(x)object.size(toString(x))))
size_without_html <- sum(sapply(bundle_list_cleaned, function(x)object.size(toString(x))))

size_without_html/size_with_html

POLAR-fhiR/fhircrackr documentation built on Dec. 24, 2024, 3:06 a.m.