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upload.R
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upload.R
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# FIXME Add support for multiple file upload
.rcloud.upload.state <- new.env()
rcloud.upload.create.file <- function(filename, force=FALSE)
{
if (!is.null(.rcloud.upload.state$file) && isOpen(.rcloud.upload.state$file))
rcloud.upload.close.file()
if (file.exists(filename) && !force)
stop("rcloud.upload: file already exists")
.rcloud.upload.state$file <- file(filename, "wb")
if (!isOpen(.rcloud.upload.state$file))
stop("rcloud.upload: could not open file for writing")
TRUE
}
rcloud.upload.write.file <- function(bytes)
{
if (is.null(.rcloud.upload.state$file) || !isOpen(.rcloud.upload.state$file))
stop("rcloud.upload: must create file first")
writeBin(bytes, .rcloud.upload.state$file)
}
rcloud.upload.close.file <- function()
{
if (is.null(.rcloud.upload.state$file) || !isOpen(.rcloud.upload.state$file))
stop("rcloud.upload: must create file first")
close(.rcloud.upload.state$file)
.rcloud.upload.state$file <- NULL
}
rcloud.upload.path <- function(...) file.path(rcloud.home(), ...)