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d6246362e6
* avoid creation of file Rplots.pdf in document file * find correctly Sweave.sty on old R versions git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@40703 a592a061-630c-0410-9148-cb99ea01b6c8
77 lines
2.9 KiB
R
77 lines
2.9 KiB
R
# file lyxsweave.R
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# This file is part of LyX, the document processor.
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# Licence details can be found in the file COPYING.
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# author Jean-Marc Lasgouttes
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# author Yihui Xie
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# Full author contact details are available in file CREDITS
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# Wrapper around Sweave that sets up some things for LyX
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# argument 1 is the absolute name of the input file
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# argument 2 is the absolute name of the output file
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# argument 3 is the iconv name for the encoding of the file
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# argument 4 is the original document directory
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.cmdargs <- commandArgs(trailingOnly=TRUE)
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.doc.enc <- .cmdargs[3]
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# check whether Sweave.sty is seen by LaTeX. if it is not, we will
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# copy it alongside the .tex file (in general in the temporary
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# directory). This means that an exported LaTeX file will not work,
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# but this is a problem of installation of R on the user's machine.
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# The advantage compared to the use of stylepath, is that the exported
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# .tex file will be portable to another machine. (JMarc)
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if (!length(system("kpsewhich Sweave.sty", intern=TRUE, ignore.stderr=TRUE))) {
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.texmf.path <- file.path(R.home("share"), "texmf")
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if (!file.exists(.sweave.sty <- file.path(.texmf.path, "Sweave.sty"))) {
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.sweave.sty <- file.path(.texmf.path, "tex", "latex", "Sweave.sty")
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}
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file.copy(.sweave.sty, dirname(.cmdargs[2]), overwrite=TRUE)
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rm(list = c('.sweave.sty', '.texmf.path'))
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}
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# Change current directory to the document directory, so that R can find
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# data files.
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setwd(.cmdargs[4])
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# this is passed as a prefix.string to tell where temporary files should go
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# the output file without extension and without '.'
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tmpout <- gsub(".", "-", sub("\\.tex$", "", basename(.cmdargs[2])), fixed = TRUE)
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# replace
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.prefix.str <- paste(dirname(.cmdargs[2]), tmpout, sep="/")
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rm(tmpout)
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# avoid the default Rplots.pdf
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options(device = function(...) {
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pdf(file = tempfile())
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})
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# finally run sweave
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# The Sweave version provided with R >= 0.13.1 has proper handling for
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# encodings and our workaround for previous versions does not work
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# anymore. Therefore, the invocation has to be different.
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if (is.null(formals(Sweave)$encoding)) {
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# set default encoding for input and output files; .orig.enc is used in
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# the sweave module preamble to reset the encoding to what it was.
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.orig.enc <- getOption("encoding")
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options(encoding=.doc.enc)
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Sweave(file=.cmdargs[1], output=.cmdargs[2], syntax="SweaveSyntaxNoweb",
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prefix.string=.prefix.str)
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} else {
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Sweave(file=.cmdargs[1], output=.cmdargs[2], syntax="SweaveSyntaxNoweb",
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prefix.string=.prefix.str, encoding=.doc.enc)
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}
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# remove absolute path from \includegraphics
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options(encoding=.doc.enc) # encoding may have been changed in the preamble chunk
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ls.doc <- readLines(.cmdargs[2])
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ls.cmd <- paste('\\includegraphics{', dirname(.cmdargs[2]), "/", sep = "")
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ls.idx <- grep(ls.cmd, ls.doc, fixed = TRUE)
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if (length(ls.idx)) {
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ls.doc[ls.idx] <- sub(ls.cmd, "\\includegraphics{", ls.doc[ls.idx], fixed = TRUE)
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writeLines(ls.doc, .cmdargs[2])
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}
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