% File src/library/tools/man/texi2dvi.Rd
% Part of the R package, http://www.R-project.org
% Copyright 1995-2014 R Core Team
% Distributed under GPL 2 or later

\name{texi2dvi}
\alias{texi2dvi}
\alias{texi2pdf}
\title{Compile LaTeX Files}
\description{
  Run \code{latex} and \code{bibtex} until all cross-references are
  resolved and create either a dvi or a PDF file.
}
\usage{
texi2dvi(file, pdf = FALSE, clean = FALSE, quiet = TRUE,
         texi2dvi = getOption("texi2dvi"),
         texinputs = NULL, index = TRUE)

texi2pdf(file, clean = FALSE, quiet = TRUE,
         texi2dvi = getOption("texi2dvi"),
         texinputs = NULL, index = TRUE)
}
\arguments{
  \item{file}{character.  Name of LaTeX source file.}
  \item{pdf}{logical.  If \code{TRUE}, a PDF file is produced instead of
    the default dvi file (\code{texi2dvi} command line option \option{--pdf}).}
  \item{clean}{logical.  If \code{TRUE}, all auxiliary files created
    during the conversion are removed.}
  \item{quiet}{logical.  No output unless an error occurs.  Ignored if
    emulation (see the \code{texi2dvi} argument) is used.}
  \item{texi2dvi}{character (or \code{NULL}).  Script or program used to
    compile a TeX file to dvi or PDF, respectively.
    The default (selected by \code{""} or \code{NULL}) is to look for an
    executable on the path and otherwise emulate the script with
    \code{system} calls.}
  \item{texinputs}{\code{NULL} or a character vector of paths to add to
    the LaTeX and bibtex input search paths.}
  \item{index}{logical: should indices be prepared?}
}
\details{
  \code{texi2pdf} is a wrapper for the common case of
  \code{texi2dvi(pdf = TRUE)}.

  Despite the name, this is used in \R to compile LaTeX files,
  specifically those generated from vignettes.  It
  ensures that the \file{\var{\link{R_HOME}}/share/texmf} directory is
  in the \env{TEXINPUTS} path, so \R style files such as \file{Sweave}
  and \file{Rd} will be found.  The TeX search path used is first the
  existing \env{TEXINPUTS} setting (or the current directory if unset),
  then elements of \code{texinputs}, then
  \file{\var{R_HOME}/share/texmf} and finally the default
  path.  Analogous changes are made to \env{BIBINPUTS} and
  \env{BSTINPUTS} settings.

  MiKTeX has a \code{texi2dvi} executable but no other Windows TeX
  installation that we know of does, so emulation is used on e.g. TeXLive
  installations on Windows.

  Occasionally indices contain special characters which cause indexing
  to fail (particularly when using the \samp{hyperref} LaTeX package)
  even on valid input.  The argument \code{index = FALSE} is provided to
  allow package manuals to be made when this happens: it uses emulation.
}
\note{
  There are various versions of the \command{texi2dvi} script on
  Unix-alikes and quite a number of bugs have been seen, some of which
  this \R wrapper works around.

  One that was present with \command{texi2dvi} version \code{4.8} (as
  supplied on OS X) is that it will not work correctly for paths which
  contain spaces, nor if the absolute path to a file would contain
  spaces.

  The three possible approaches all have their quirks.  For example the
  Unix-alike \code{texi2dvi} script removes ancillary files that already
  exist but the other two approaches do not (and may get confused by
  such files).
  
  Where supported (\command{texi2dvi} 5.x and \command{texify}),
  option \option{--max-iterations=20} is used to avoid infinite retries.
}
\value{
  Invisible \code{NULL}.  Used for the side effect of creating a dvi or
  PDF file in the current working directory (and maybe other files,
  especially if \code{clean = FALSE}).
}
\author{
  Originally Achim Zeileis but largely rewritten by R-core.
}
\keyword{utilities}