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README.Rmd
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---
output: github_document
---
<!-- README.md is generated from README.Rmd. Please edit that file -->
```{r, include = FALSE}
knitr::opts_chunk$set(
collapse = TRUE,
comment = "#>",
fig.path = "man/figures/README-",
out.width = "100%"
)
```
# xml2
<!-- badges: start -->
[](https://cran.r-project.org/package=xml2)
[](https://app.codecov.io/gh/r-lib/xml2?branch=main)
[](https://github.com/r-lib/xml2/actions)
[](https://github.com/r-lib/xml2/actions/workflows/R-CMD-check.yaml)
<!-- badges: end -->
The xml2 package is a binding to [libxml2](http://xmlsoft.org), making it easy to work with HTML and XML from R. The API is somewhat inspired by [jQuery](https://jquery.com).
## Installation
You can install xml2 from CRAN,
```r
install.packages("xml2")
```
or you can install the development version from github, using `pak`:
```r
# install.packages("pak")
pak::pak("r-lib/xml2")
```
## Usage
```r
library(xml2)
x <- read_xml("<foo> <bar> text <baz/> </bar> </foo>")
x
xml_name(x)
xml_children(x)
xml_text(x)
xml_find_all(x, ".//baz")
h <- read_html("<html><p>Hi <b>!")
h
xml_name(h)
xml_text(h)
```
There are three key classes:
* `xml_node`: a single node in a document.
* `xml_doc`: the complete document. Acting on a document is usually the same
as acting on the root node of the document.
* `xml_nodeset`: a __set__ of nodes within the document. Operations on
`xml_nodeset`s are vectorised, apply the operation over each node in the set.
## Compared to the XML package
xml2 has similar goals to the XML package. The main differences are:
* xml2 takes care of memory management for you. It will automatically
free the memory used by an XML document as soon as the last reference
to it goes away.
* xml2 has a very simple class hierarchy so you don't need to think about exactly
what type of object you have, xml2 will just do the right thing.
* More convenient handling of namespaces in Xpath expressions - see `xml_ns()`
and `xml_ns_strip()` to get started.
## Code of Conduct
Please note that the xml2 project is released with a [Contributor Code of Conduct](https://xml2.r-lib.org/CODE_OF_CONDUCT.html). By contributing to this project, you agree to abide by its terms.