[R] Word-Wrapper Library/Package?

[Andrew Simmons]

I think what you're looking for is 'strwrap', it's in package base.

On Tue, Sep 28, 2021, 22:26 Leonard Mada via R-help <r-help using r-project.org>
wrote:

> Dear R-Users,
>
>
> Does anyone know any package or library that implements functions for
> word wrapping?
>
>
> I did implement a very rudimentary one (Github link below), but would
> like to avoid to reinvent the wheel. Considering that word-wrapping is a
> very common task, it should be available even in base R (e.g. in a
> "format" module/package).
>
>
> Sincerely,
>
>
> Leonard
>
> =======
>
> The latest versions of the functions are on Github:
>
> https://github.com/discoleo/R/blob/master/Stat/Tools.CRAN.R
> # Note:
> # - the function implementing word wrapping: split.N.line(...);
> # - for the example below: the functions defined in Tools.CRAN.R are
> required;
>
>
> Examples:
> ### Search CRAN
> library(pkgsearch)
>
> searchCran = function(s, from=1, len=60, len.print=20, extend="*",
>          sep=" ", sep.h="-") {
>      if( ! is.null(extend)) s = paste0(s, extend);
>      x = advanced_search(s, size=len, from=from);
>      if(length(x$package_data) == 0) {
>          cat("No packages found!", sep="\n");
>      } else {
>          scroll.pkg(x, len=len.print, sep=sep, sep.h=sep.h);
>      }
>      invisible(x)
> }
>
> # with nice formatting & printing:
> x = searchCran("text", from=60, sep.h="-")
>
> scroll.pkg(x, start=20, len=21, sep.h = "-*")
> # test of sep.h=NULL vs ...
>
>
> Notes:
>
> 1.) split.N.line:
>
> - was implemented to output a pre-specified number of lines (kind of
> "maxLines"), but this is not required from an actual word-wrapper;
>
> - it was an initial design decision when implementing the format.lines()
> function; but I plan to implement a 1-pass exact algorithm during the
> next few days anyway;
>
> 2.) Refactoring
>
> - I will also move the formatting code to a new file: probably
> Tools.Formatting.R;
>
> - the same applies for the formatting code for ftable (currently in file
> Tools.Data.R);
>
> 3.) Package gridtext
>
> - seems to have some word-wrapping functionality, but does not seem to
> expose it;
>
> - I am also currently focused on character-based word wrapping (e.g. for
> RConsole);
>
>
>
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>
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