We want to extract parameters and values from a given URL like
http://www.exemple.com/?a=1&b=2&c=3#def
Using xml2::url_parse we were able to Parse a url into its component pieces. However we still want to devide the query into elements using gsub matching regular expression:
([^?&=#]+)=([^&#]*)
Desired output
a=1
b=2
c=3
Use urltools package to parse URLs.
> u <- "http://www.exemple.com/?a=1&b=2&c=3#def"
> strsplit(urltools::parameters(u), "&")[[1L]]
[1] "a=1" "b=2" "c=3"
> urltools::param_get(u, "b")
b
1 2
We can try
library(stringr)
matrix(str_extract_all(str1, "[a-z](?=\\=)|(?<=\\=)\\d+")[[1]], ncol=2, byrow=TRUE)
Or if we need the = also
str_extract_all(str1, "[a-z]=\\d+")[[1]]
#[1] "a=1" "b=2" "c=3"
str1 <- "http://www.exemple.com/?a=1&b=2&c=3#def"
