CRAN release: 2021-10-16
Fixes for CRAN
html_table()converts empty tables to empty tibbles (@epiben, #327).
CRAN release: 2021-07-26
html_table()correctly handles tables with cells that contain blank values for
colspan, so that e.g.
<td rowspan="">is parsed as
<td rowspan=1>(@epiben, #323).
Fix broken example
CRAN release: 2021-03-09
html_text2()provides a more natural rendering of HTML nodes into text, converting
<br>into “”, and removing non-significant whitespace (#175). By default, it also converts
into regular spaces, which you can suppress with
preserve_nbsp = TRUE(#284).
html_table()has been re-written from scratch to more closely mimic the algorithm that browsers use for parsing tables. This should mean that there are far fewer tables for which it fails to produce some output (#63, #204, #215). The
fillargument has been deprecated since it is no longer needed.
html_table()now returns a tibble rather than a data frame to be compatible with the rest of the tidyverse (#199). Its performance has been considerably improved (#237). It also gains a
na.stringsargument to control what values are converted to
NA(#107), and a
convertargument to control whether to run the conversion (#311).
html_form_submit()allows you to submit a form directly, without needing to create a session (#300).
rvest is now licensed as MIT (#287).
Since this is the 1.0.0 release, I included a large number of API changes to make rvest more compatible with current tidyverse conventions. Older functions have been deprecated, so existing code will continue to work (albeit with a few new warnings).
rvest now imports xml2 rather than depending on it. This is cleaner because it avoids attaching all the xml2 functions that you’re less likely to use. To reduce the change of breakages, rvest re-exports xml2 functions
url_absolute(), but your code may now need an explicit
html_form()now returns an object with class
rvest_form(instead of form). Fields within a form now have class
rvest_field, instead of a variety of classes that were lacking the
rvest_prefix. All functions for working with forms have a common
submit_form()was renamed to
session_submit()because it returns a session.
html_nodes()have been superseded in favor of
html_elements()since they (almost) always return elements, not nodes (#298).
session()and returns an object of class
session). All functions that work with session objects now have a common
xml()functions have been removed.
minimal_html()(which doesn’t appear to be used by any other package) has had its arguments flipped to make it more intuitive.
guess_encoding()has been renamed to
html_encoding_guess()to avoid a clash with
repair_encoding()has been deprecated because it doesn’t appear to work.
pluck()is no longer exported to avoid a clash with
purrr::pluck(); if you need it use
purrr::map_chr()and friends instead (#209).
xml_nodes()have been formally deprecated in favor of their
Minor improvements and bug fixes
The “harvesting the web” vignette has been rewritten to focus more on basics rvest, eliminating the screenshots to keep the installed package as svelte as possible. It’s also been renamed to
vignette("rvest")since it’s the vignette that you should read first.
The SelectorGadget vignette is now a web-only article, https://rvest.tidyverse.org/articles/articles/selectorgadget.html, so we can be more generous with screenshots since they’re no longer bundled with every install of the package. Together with the rewrite of the other vignette, this means that rvest is now ~90 Kb instead of ~1.1 Mb.
All uses of IMDB have been eliminated since the site explicitly prohibits scraping (#195).
formdoesn’t have a
session_forward()function to complement
session_back(). It now allows you to pick the submission button by position (#156). The
...argument is deprecated; please use
html_form_set()can now accept character vectors allowing you to select multiple checkboxes in a set or select multiple values from a multi-
<select>(#127, with help from @juba). It also uses dynamic dots so that you can use
!!!if you have a list of values (#189).
CRAN release: 2019-05-15
- Remove unneeded
CRAN release: 2019-04-11
CRAN release: 2016-06-17
back()to correctly manage session history.
If you’re using xml2 1.0.0,
html_node()will now return a “missing node”.
Parse rowspans and colspans effectively by filling using repetition from left to right (for colspan) and top to bottom (rowspan) (#111)
Updated a few examples and demos where the website structure has changed.
Made compatible with both xml2 0.1.2 and 1.0.0.
CRAN release: 2015-11-11
Fix invalid link for SSA example.
<options>that don’t have value attribute (#85).
Remove all remaining uses of
html()in favor of
CRAN release: 2015-09-23
rvest has been rewritten to take advantage of the new xml2 package. xml2 provides a fresh binding to libxml2, avoiding many of the work-arounds previously needed for the XML package. Now rvest depends on the xml2 package, so all the xml functions are available, and rvest adds a thin wrapper for html.
A number of functions have change names. The old versions still work, but are deprecated and will be removed in rvest 0.4.0.
html_node()now throws an error if there are no matches, and a warning if there’s more than one match. I think this should make it more likely to fail clearly when the structure of the page changes.
xml_structure()has been moved to xml2. New
html_structure()(also in xml2) highlights id and class attributes (#78).
submit_form()now works with forms that use GET (#66).
submit_form()) is now case-insensitive, and so will find
<input type=SUBMIT>as well as
submit_form()) recognizes forms with
<input type="image">as a valid form submission button.
CRAN release: 2015-01-01
httr::GET()so you can more finely control the request (#48).
Add xml support: parse with
xml(), then work with using
xml_structure(): new function that displays the structure (i.e. tag and attribute names) of a xml/html object (#10).
follow_link()now accepts css and xpath selectors. (#38, #41, #42)
html()does a better job of dealing with encodings (passing the problem on to
XML::parseHTML()) instead of trying to do it itself (#25, #50).
html_attr()returns default value when input is NULL (#49)
html_node()method for session.
html_nodes()now returns an empty list if no elements are found (#31).
submit_form()converts relative paths to absolute URLs (#52). It also deals better with 0-length inputs (#29).