curlEscape

0th

Percentile

Handle characters in URL that need to be escaped

These functions convert between URLs that are human-readable and those that have special characters escaped. For example, to send a URL with a space, we need to represent the space as %20.

curlPercentEncode uses a different format than the curlEscape function and this is needed for x-www-form-encoded POST submissions.

Keywords
IO
Usage
curlEscape(urls)
curlUnescape(urls)
curlPercentEncode(x, amp = TRUE, codes = PercentCodes, post.amp = FALSE)
Arguments
urls

a character vector giving the strings to be escaped or unescaped.

x

the strings to be encoded via the percent-encoding method

amp

a logical value indicating whether to encode \& characters.

codes

the named character vector giving the encoding map. The names are the characters we encode, the values are what we encode them as.

post.amp

a logical value controlling whether the resulting string is further processed to escape the percent (%) prefixes with the code for percent, i.e. %25.

Details

This calls curl_escape or curl_unescape in the libcurl library.

Value

A character vector that has corresponding elements to the input with the characters escaped or not.

References

Curl homepage http://curl.haxx.se

Percent encoding explained in http://en.wikipedia.org/wiki/Percent-encoding

Aliases
  • curlEscape
  • curlUnescape
  • curlPercentEncode
Examples
# NOT RUN {
  curlEscape("http://www.abc.com?x=a is a sentence&a b=and another")

  # Reverse it should get back original
  curlUnescape(curlEscape("http://www.abc.com?x=a is a sentence&a b=and another"))
# }
Documentation reproduced from package RCurl, version 1.98-1.1, License: BSD_3_clause + file LICENSE

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