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Encoding handling not handled by stringi and possibly inconsistent #37

kbenoit opened this Issue Nov 19, 2016 · 3 comments


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commented Nov 19, 2016

Our README states:

(All ecnoding functions are handled by the stringi package.)

But this is hardly true, since we use the base iconv() that happens through file() in get-functions.R, not stringi.

We should go through carefully to ensure consistency, and also change our claims to be accurate.

@kbenoit kbenoit added the pre-CRAN label Dec 30, 2016

@kbenoit kbenoit modified the milestone: CRAN release Dec 30, 2016


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commented Jan 2, 2017

By my reckoning,

  • get_txt, get_csv, get_json_tweets, get_json_lines use readLines.
  • get_json_object uses jsonlite::fromJSON
  • get_XML uses XML::xmlTreeParse or XML::xmlToDataFrame
  • get_html, get_docx use XML::htmlTreeParse
  • get_pdf uses the pdf2text command line utility (set to output UTF-8)
  • get_doc uses the antiword command line utility

We could replace all of the readLines calls with stri_read_lines (although that function is labelled experimental). Presumably jsonlite and XML know how to deal with their encodings, which leaves html and doc. XML::htmlTreeParse has an encoding option, but I don't think stringi is designed to autodetect encoding of marked-up text. I'm not sure what to do with antiword, it doesn't look like you can specify an output encoding, which means it might be platform-dependent...

@adamobeng adamobeng self-assigned this Jan 2, 2017


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commented Jan 9, 2017

I should also note that we don't currently "include functions for diagnosing encodings on a file-by-file basis", because the stringi encoding detection stuff is not currently exposed.


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commented May 16, 2017

I'm putting this on the long list for the next release.

@kbenoit kbenoit removed this from the CRAN release milestone May 16, 2017

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