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###########################################################################/**
# @RdocDefault compileKnitr
#
# @title "Compiles a Knitr file"
#
# \description{
# @get "title".
# }
#
# @synopsis
#
# \arguments{
# \item{filename, path}{The filename and (optional) path of the
# document to be compiled.}
# \item{...}{Additional arguments passed to @see "compileLaTeX".}
# \item{outPath}{The output and working directory.}
# \item{postprocess}{If @TRUE, and a postprocessing method exists for
# the generated product, it is postprocessed as well.}
# \item{verbose}{See @see "R.utils::Verbose".}
# }
#
# \value{
# Returns the pathname of the generated document.
# }
#
# @author
#
# \seealso{
# Internally, @see "knitr::knit" is used.
# }
#
# @keyword file
# @keyword IO
# @keyword internal
#*/###########################################################################
setMethodS3("compileKnitr", "default", function(filename, path=NULL, ..., outPath=".", postprocess=TRUE, verbose=FALSE) {
use("knitr", quietly=TRUE)
# To please R CMD check
knit <- NULL; rm(list="knit")
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# Validate arguments
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# Arguments 'filename' & 'path':
pathname <- if (is.null(path)) filename else file.path(path, filename)
if (!isUrl(pathname)) {
pathname <- Arguments$getReadablePathname(pathname)
}
# Arguments 'outPath':
outPath <- Arguments$getWritablePath(outPath)
if (is.null(outPath)) outPath <- "."
# Argument 'verbose':
verbose <- Arguments$getVerbose(verbose)
if (verbose) {
pushState(verbose)
on.exit(popState(verbose))
}
verbose && enter(verbose, "Compiling Knitr document")
# Download URL?
if (isUrl(pathname)) {
verbose && enter(verbose, "Downloading URL")
url <- pathname
verbose && cat(verbose, "URL: ", url)
pathname <- downloadFile(url, verbose=less(verbose,50))
verbose && cat(verbose, "Local file: ", pathname)
verbose && exit(verbose)
}
pathname <- getAbsolutePath(pathname)
verbose && cat(verbose, "Pathname (absolute): ", pathname)
verbose && printf(verbose, "Input file size: %g bytes\n", file.info(pathname)$size)
verbose && cat(verbose, "Output and working directory: ", outPath)
opwd <- "."
on.exit(setwd(opwd), add=TRUE)
if (!is.null(outPath)) {
opwd <- setwd(outPath)
}
pathname2 <- knit(pathname)
pathname2 <- getAbsolutePath(pathname2)
setwd(opwd); opwd <- "."
res <- RspFileProduct(pathname2)
verbose && print(verbose, res)
# Postprocess?
if (postprocess) {
res <- process(res, outPath=outPath, recursive=TRUE, verbose=verbose)
}
verbose && exit(verbose)
res
}) # compileKnitr()
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