libcurl (which the RCurl & curl packages are built on) do not inherently have retry or resume partial capabilities, but those could be packaged up into a "robustdownloader" package. There's no guarantee of wget or curl binaries being on a system (especially Windows, even with an Rtools installation, rly great platform there). Windows does have a PowerShell `wget` alias for `Invoke-WebRequest` but it's woefully less powerful than wget-proper and doesn't support the features you need and it relies on PowerShell).
I'd suggest the creation of a separate package for robust downloading and then relying on that or keep the solution you've got by PR #56. On Thu, Aug 25, 2016 at 9:56 AM, Dirk Eddelbuettel <e...@debian.org> wrote: > > On 25 August 2016 at 08:24, Joshua Ulrich wrote: > | Try downloader: https://cran.r-project.org/package=downloader > > Also, if you really want wget / know how to parameterise wget you can > ... just depend on _wget itself_ which you can > > a) test for via Sys.which("wget") > > b) select as an option for download.file() and hence all file access. > > Dirk > > | On Thu, Aug 25, 2016 at 7:47 AM, Lucas Ferreira Mation > | <lucasmat...@gmail.com> wrote: > | > I am creating this package <https://github.com/ > lucasmation/microdadosBrasil> > | > that has to download data from some sources that are a bit > | > unstable/unreliable. The problem is described in this issue > | > <https://github.com/lucasmation/microdadosBrasil/issues/56>. > | > > | > Is there a more "robust" download fucntion in R? > | > Something similar to wget, that would: > | > > | > - where there are errors, repeat the download a few times before > giving up, > | > preferably, using partial data on a file being downloaded from previous > | > attempts > | > - check the integrity of the downloaded file > | > > | > As this has to be embedded in an R package, the solution needs to be OS > | > independent and require no installation of external software by the > user. > | > > | > regards > | > Lucas > | > > | > [[alternative HTML version deleted]] > | > > | > ______________________________________________ > | > R-package-devel@r-project.org mailing list > | > https://stat.ethz.ch/mailman/listinfo/r-package-devel > | > | > | > | -- > | Joshua Ulrich | about.me/joshuaulrich > | FOSS Trading | www.fosstrading.com > | R/Finance 2016 | www.rinfinance.com > | > | ______________________________________________ > | R-package-devel@r-project.org mailing list > | https://stat.ethz.ch/mailman/listinfo/r-package-devel > > -- > http://dirk.eddelbuettel.com | @eddelbuettel | e...@debian.org > > ______________________________________________ > R-package-devel@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-package-devel > [[alternative HTML version deleted]] ______________________________________________ R-package-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-package-devel
