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###########################################################################/**
# @RdocDefault compileAsciiDoc
#
# @title "Compiles an AsciiDoc 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 executable \code{ascii}
# (which must be on the system search path)
# called via @see "base::system2".}
# \item{outPath}{The output and working directory.}
# \item{postprocess}{Should the generated document be post processed or not?}
# \item{verbose}{See @see "R.utils::Verbose".}
# }
#
# \value{
# Returns the pathname of the generated document.
# }
#
# @author
#
# @keyword file
# @keyword IO
# @keyword internal
#*/###########################################################################
setMethodS3("compileAsciiDoc", "default", function(filename, path=NULL, ..., outPath=".", postprocess=TRUE, verbose=FALSE) {
use("ascii", quietly=TRUE)
# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
# 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$getVerbose(verbose)
if (verbose) {
pushState(verbose)
on.exit(popState(verbose))
}
verbose && enter(verbose, "Compiling AsciiDoc noweb document")
# Download URL?
if (isUrl(pathname)) {
verbose && enter(verbose, "Downloading URL")
url <- pathname
verbose && cat(verbose, "URL: ", url)
pathname <- downloadFile(url, verbose=less(verbose,50))
verbose && cat(verbose, "Local file: ", pathname)
verbose && exit(verbose)
}
pathname <- getAbsolutePath(pathname)
verbose && cat(verbose, "Pathname (absolute): ", pathname)
verbose && printf(verbose, "Input file size: %g bytes\n", file.info(pathname)$size)
verbose && cat(verbose, "Output and working directory: ", outPath)
bin <- findAsciiDoc(mustExist=TRUE, verbose=less(verbose, 10))
opwd <- "."
on.exit(setwd(opwd), add=TRUE)
if (!is.null(outPath)) {
opwd <- setwd(outPath)
}
args <- c("-v")
## args <- c(args, "-a data-uri")
# Output file
fullnameR <- gsub("[.][^.]*$", "", basename(pathname))
extR <- "html"
filenameR <- sprintf("%s.%s", fullnameR, extR)
pathnameR <- filenameR
arg <- sprintf("-o %s", pathnameR)
args <- c(args, arg)
# Source file
pathname <- normalizePath(pathname)
args <- c(args, pathname)
if (verbose && isVisible(less(verbose, 5))) {
verbose && cat(verbose, "AsciiDoc executable:")
verbose && print(verbose, bin)
verbose && cat(verbose, "Command-line arguments:")
verbose && print(verbose, args)
}
res <- system2(bin, args=args, stderr=TRUE)
res <- trim(res)
if (length(res) == 0L) {
throw("Failed to run external 'asciidoc'. No output is available.")
}
if (verbose && isVisible(less(verbose, 10))) {
verbose && cat(verbose, res, collapse="\n")
}
# Locate asciidoc warnings
pattern <- "^asciidoc: WARNING: "
warns <- grep(pattern, res, value=TRUE)
if (length(warns) > 0L) {
warns <- gsub(pattern, "", warns)
warns <- trim(warns)
verbose && enter(verbose, sprintf("Detected %d AsciiDoc warnings", length(warns)))
verbose && cat(verbose, warns, collapse="\n")
for (warn in warns) warning("AsciiDoc WARNING: ", warn)
verbose && exit(verbose)
}
# Locate output filename
pattern <- "^asciidoc: writing: "
pathname2 <- grep(pattern, res, value=TRUE)
pathname2 <- gsub(pattern, "", pathname2)
pathname2 <- trim(pathname2)
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
}) # compileAsciiDoc()
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