#! /bin/sh
##
##  pdf90: A shell program to rotate all pages of PDF files
##
##  Author David Firth (http://www.warwick.ac.uk/go/dfirth)
##
version=1.20
echo "This is pdf90 version ""$version"
##
##  Relies on pdflatex and the 'pdfpages' package (version 0.2e 
##  or later).
##
#######################################################################
##  CONFIGURATION: change this block as necessary
##
##  THESE SETTINGS WILL BE OVER-RIDDEN by any found at 
##     /etc/pdfnup.conf
##     /usr/share/etc/pdfnup.conf
##     /usr/local/share/pdfnup.conf
##     /usr/local/etc/pdfnup.conf
##     ~/.pdfnup.conf
##  (which are read in that order)
##  
##  First say where your "pdflatex" program lives:
##
pdflatex=pdflatex
#pdflatex="pdflatex.exe"    ## this for Windows computers
##
##  Next a permitted location for temporary files on your system:
##
tempfileDir="/var/tmp" ## /var/tmp is standard on most unix systems
#tempfileDir="C:/tmp"  ## use something like this under Windows
##
##  Now specify the default settings for pdf90:
## 
tidy=true              ## delete all temporary files immediately
##
##  END OF CONFIGURATION
#######################################################################
##
##  Read the configuration file(s) if such exist:
##
for d in /etc /usr/share/etc /usr/local/share /usr/local/etc
do if test -f $d/pdfnup.conf; then
   echo "Reading site configuration from $d/pdfnup.conf"
   source $d/pdfnup.conf
   fi 
done
if test -f ~/.pdfnup.conf; then 
   echo "Reading user defaults from ~/.pdfnup.conf";
   source ~/.pdfnup.conf; 
fi
#######################################################################
##
##  Define the output of "pdf90 --help"
##
helptext="
Usage: pdf90 args
where args must include source pdf filename(s) and optionally also
* a specific name for the output file, e.g. --outfile myrotatedfile.pdf 
* one of --tidy true
         --tidy false
  according to whether or not temporary files should be deleted immediately.
  If --tidy false is used, such files are left in $tempfileDir.

Default arguments for you at this site are
  --tidy $tidy 
  
For information and version history see http://www.warwick.ac.uk/go/pdfjam
"
##
##  Check that necessary LaTeX packages are installed
##
PATH=`dirname "$pdflatex"`:$PATH
export PATH
case `kpsewhich pdfpages.sty` in
	"") echo "pdf90: pdfpages.sty not installed"; exit 1;;
esac
case `kpsewhich eso-pic.sty` in
	"") echo \
	    "pdf90: eso-pic.sty not installed (see the pdfpages manual)"
	    exit 1;;
esac
case `kpsewhich everyshi.sty` in
	"") echo \
	    "pdf90: everyshi.sty not installed (see the pdfpages manual)"
	    exit 1;;
esac
##
##  Now do the argument loop...
##
sourcePath=
outFile=
inFiles=0
newline='
'
while test -n "${1}"; do
  case "${1}" in
  	*.pdf) inFiles=`expr $inFiles + 1`;
  	       sourcePath="$sourcePath$newline${1}";;
  	--help) echo "$helptext";
            exit 0;;
 	--outfile) outFile="${2}" 
  	           case "$outFile" in
  	           	*".pdf");;
  	           	*) echo "pdf90: outfile name must end in .pdf"; 
  	           	   exit 1;;
  	           esac
  	           shift;;
  	--tidy) tidy="${2}"
  	        shift;;
  	*) echo "pdf90: unrecognised argument ${1}"; exit 1;;
  esac
  shift
done
if test $inFiles -gt 1 ; then
  if test "$outFile" != "" ; then
    echo "pdf90: --outfile cannot be used with multiple input files"; 
    echo "pdf90: no files processed"
    exit 1;
  fi
fi
case "$sourcePath" in
  "") echo "pdf90: no pdf source file specified
For information on usage try \"pdf90 --help\""; exit 1;;
esac
OIFS=IFS
IFS="$newline"
for k in $sourcePath
do
  if test -f "$k"; then :; 
    else echo "pdf90: ""$k"" does not exist, no files were processed"; 
    exit 1;
  fi
done
##
##  That's the arguments done.
##
##
##  Now work on the input file (or files in turn)
##
pwd=`pwd | sed 's/ /\\ /'`
counter=0
for inFile in $sourcePath
do
  counter=`expr $counter + 1`
  echo "Processing $inFile..."
  cd "$pwd"
  pdfName=`basename "$inFile"`
  sourceDir=`dirname "$inFile"` ; cd "$sourceDir" ; sourceDir=`pwd`
  sourceFullPath="$sourceDir"/"$pdfName"
  cd "$pwd"
  case "$outFile" in
	  "") ## no --outfile argument supplied
	      outfileNameRoot=`echo "$pdfName" | sed 's/\.pdf$//'`-rotated;
	      outfileDir="$sourceDir";
	      outFile="$outfileNameRoot"".pdf";;
	   *) ## --outfile argument was supplied
	      outfileNameRoot=`basename "$outFile" | sed 's/\.pdf$//';`
	      outfileDir=`dirname "$outFile"` ; 
	      cd "$outfileDir" ; 
	      outfileDir=`pwd` ;;
  esac
  case "$outfileDir"/"$outfileNameRoot"".pdf" in
    $sourceFullPath) echo "pdf90: outfile and source cannot be the same";
  	            exit 1;;
    //"$outfileNameRoot"".pdf") outfileDir="";;  ## in case of output 
  esac                                           ## to the root directory!
  ##
  ##  Now edit the temporary LaTeX input file
  ##
  uniqueName="$$"-"$counter"
  ln -s "$sourceFullPath" "$tempfileDir"/"$uniqueName"source.pdf
  texFile="$tempfileDir"/"$uniqueName".tex
  msgFile="$tempfileDir"/"$uniqueName".msgs
  (sed s*pdfname*"$tempfileDir"/"$uniqueName"source.pdf* <<EndTemplate
\documentclass{article}
\usepackage{pdfpages}
\begin{document}
\includepdf[pages=-,fitpaper=true,angle=90]{pdfname}
\end{document}
EndTemplate
) | sed 's/^[^b]egin/\\begin/' > $texFile
  echo "  Temporary LaTeX file for this job is ""$texFile"
  ##
  ##  Now run pdflatex and tidy up
  ##
  echo "  Calling pdflatex..."
  cd "$tempfileDir"
  "$pdflatex" --interaction batchmode "$texFile" > "$msgFile"
  if test -f "$tempfileDir"/"$uniqueName"".aux";  
        ## ie if LaTeX didn't choke
    then if cp "$tempfileDir"/"$uniqueName".pdf \
               "$outfileDir"/"$outfileNameRoot"".pdf"
         then echo "  Finished: output is"\
                   "$outfileDir"/"$outfileNameRoot"".pdf"
         fi
    case "$tidy" in
      true) rm "$tempfileDir"/"$uniqueName"* ;;
    esac
    outFile=""
  else echo "  Failed: output file not written"
  fi 
done
IFS=OIFS



