lyx_mirror/lib/scripts/lyxsweave.R
Jean-Marc Lasgouttes c87c1a06e8 Backport r39070 and r39140.
This fixes two sweave bugs (mainly under windows):
- latex error when the temp dir path contains a space
- latex error when the R dir path contains a space



git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/branches/BRANCH_2_0_X@39141 a592a061-630c-0410-9148-cb99ea01b6c8
2011-06-20 12:15:30 +00:00

56 lines
2.2 KiB
R

# file lyxsweave.R
# This file is part of LyX, the document processor.
# Licence details can be found in the file COPYING.
# author Jean-Marc Lasgouttes
# author Yihui Xie
# Full author contact details are available in file CREDITS
# Wrapper around Sweave that sets up some things for LyX
# argument 1 is the absolute name of the input file
# argument 2 is the absolute name of the output file
# argument 3 is the iconv name for the encoding of the file
# argument 4 is the original document directory
ls.args <- commandArgs(trailingOnly=TRUE)
# check whether Sweave.sty is seen by LaTeX. if it is not, we will
# copy it alongside the .tex file (in general in the temporary
# directory). This means that an exported LaTeX file will not work,
# but this is a problem of installation of R on the user's machine.
# The advantage compared to the use of stylepath, is that the exported
# .tex file will be portable to another machine. (JMarc)
ls.sweavesty <- system("kpsewhich Sweave.sty", intern=TRUE, ignore.stderr=TRUE)
if (!length(ls.sweavesty)) {
stypath <- file.path(R.home("share"), "texmf", "tex", "latex", "Sweave.sty")
file.copy(stypath, dirname(ls.args[2]), overwrite=TRUE)
}
# set default encoding for input and output files; ls.enc is used in
# the sweave module preamble to reset the encoding to what it was.
ls.enc <- getOption("encoding")
options(encoding=ls.args[3])
# Change current directory to the document directory, so that R can find
# data files.
setwd(ls.args[4])
# this is passed as a prefix.string to tell where temporary files should go
# the output file without extension and without '.'
tmpout <- gsub(".", "-", sub("\\.tex$", "", basename(ls.args[2])), fixed = TRUE)
# replace
ls.pr <- paste(dirname(ls.args[2]), tmpout, sep="/")
# finally run sweave
Sweave(file=ls.args[1], output=ls.args[2], syntax="SweaveSyntaxNoweb", prefix.string=ls.pr)
# remove absolute path from \includegraphics
ls.doc = readLines(ls.args[2])
ls.cmd = paste('\\includegraphics{', dirname(ls.args[2]), "/", sep = "")
ls.idx = grep(ls.cmd, ls.doc, fixed = TRUE)
if (length(ls.idx)) {
ls.doc[ls.idx] = sub(ls.cmd, "\\includegraphics{", ls.doc[ls.idx], fixed = TRUE)
writeLines(ls.doc, ls.args[2])
}