#!/bin/sh

# Bengt Martensson <bengt@mathematik.uni-Bremen.de>

# Generates a nice LaTeX file of the abbreviations in the bibtex-styles in
# the arguments.

# Bugs: 
#   REQUIRES that the definition is written in ONE line
#   Does not check for consistency of the abbreviated versions and the 
#   full versions

short_file=/tmp/short$$
full_file=/tmp/full$$
outfile=printabbrevs.tex

usage='usage: printabbrevs [-output|-preview|-cpp|-latex] bibtexstyle-file...'

cpp=false
latex=false
preview=false
dvipreviewcommand="xdvi"

while :
do
   case "$1" in
	-cpp) cpp=true; shift;;
	-debug)	set -x; shift;;
	-preview) preview=true; shift;;
	-l|-latex) latex=true; shift;;
	-o|-output) outfile="$2"; shift 2;;
	-*|+*) echo "$usage" >&2; exit 1;;
	*) break;;
	esac
    done

if [ $# -lt 1 ]
then
   echo $usage >&2
   exit 1
fi

dvifile=`echo $outfile | sed -e 's/\.tex$/.dvi/'`
echo "Outputting to $outfile" >&2

warning=false
if $cpp
then
	cat $* | /lib/cpp -P > $short_file
	cat $* | /lib/cpp -P -DMONTH_FULL -DJOUR_FULL > $full_file
else
	cat $* > $full_file
	cp /dev/null $short_file
	if grep "#include" $full_file >/dev/null
	then
		warning=true
		echo "Warning: Ignoring #include in the file(s). (Use the -cpp flag to invoke cpp.)" >&2
	fi
fi

echo "\\documentstyle[a4wide]{article}
\\frenchspacing
\\begin{document}
\\title{Abbreviations in file(s): $*"  	> $outfile
if $warning
then
	echo "\\\\(cpp not invoked)"	>> $outfile
fi
echo "}
\\author{Generated by printabbrevs on `date '+%a %d-%h-%y %H:%M'`}
\\date{}
\\maketitle
\\begin{list}{}{\\settowidth\\labelwidth{1234567}
       \itemsep=2pt plus 1pt
       \def\makelabel#1{\tt #1\hfil}}" >> $outfile
awk '
/MACRO/ {
  key = substr($2,2,length($2)-2)
  it = substr($0,index($0,"\"")+1)
  it = substr(it,1,index(it,"\"")-1)
  if (full == 1) {
    full_array[key] = it
  }
  else {
    short_array[key] = it
  }
}

END {
  for (i in full_array) {
    printf "\\item[%s] %s {\\em %s}\n",i,full_array[i],short_array[i]
  }
  
}' full=1 $full_file full=0 $short_file |sort +1 >> $outfile

echo "\\end{list}
\\end{document}" >> $outfile

rm -f $full_file $short_file

if $latex
then
	latex $outfile
fi
if [ $? -ne 0 ] 
then
	exit 1
fi
if $preview
then
	$dvipreviewcommand $dvifile &
fi