#!/bin/bash
#
# File : wiley2bibtex : convert the wiley citations to bibtex
#

usage ()
{
   echo -ne "wiley2bibtex : Convert citations from Wiley on line
library to BibTeX\n"
   echo -ne "Usage: wiley2bibtex inputfile outputfile\n"
}

parse()
{
   if [ -f /usr/bin/dos2unix ] ; then
       dos2unix "$1" > /dev/null 2>&1
   else
       echo "Could not find dos2unix. Continuing without converting"
   fi

   # Check if it's downloaded from Wiley
   grep "Provider: John Wiley & Sons, Ltd" "$1" > /dev/null

   if [ 0 -ne $? ]; then
       echo -ne "Does not appear to be from the Wiley online library\n"
       echo -ne "Misses the required Provider: header\n"
       echo -ne "Exiting"
       exit 1
   fi

   echo -ne "@Article{" > $2

   # Get the values
   TY=$(grep "TY  -" "$1" | awk 'BEGIN { FS = " - " }; { print $2 }')
   TITLE=$(grep "TI  -" "$1" | awk 'BEGIN { FS = " - " }; { print
$2 }')
   JOURNAL=$(grep "JO  -" "$1" | awk 'BEGIN { FS = " - " }; { print
$2 }')
   VOLUME=$(grep "VL  -" "$1" | awk 'BEGIN { FS = " - " }; { print
$2 }')
   ISSUE=$(grep "IS  -" "$1" | awk 'BEGIN { FS = " - " }; { print
$2 }')
   PUBLISHER=$(grep "PB  -" "$1" | awk 'BEGIN { FS = " - " }; { print
$2 }')
   SERIAL=$(grep "SN  -" "$1" | awk 'BEGIN { FS = " - " }; { print
$2 }')
   URL=$(grep "UR  -" "$1" | awk 'BEGIN { FS = " - " }; { print $2 }')
   DOI=$(grep "DO  -" "$1" | awk 'BEGIN { FS = " - " }; { print $2 }')
   START_PAGE=$(grep "SP  -" "$1" | awk 'BEGIN { FS = " - " }; { print
$2 }')
   END_PAGE=$(grep "EP  -" "$1" | awk 'BEGIN { FS = " - " }; { print
$2 }')
   YEAR=$(grep "PY  -" "$1" | awk 'BEGIN { FS = " - " }; { print $2 }')
   AUTHOR_NUM=$(grep "AU  -" "$1" | wc -l)
   # understand this!
   for i in "$(grep "AU  -" $1 )"; do
       AUTHOR=$(echo "$i" | awk 'BEGIN{FS = " - "}; { print $2}' | awk
'BEGIN {FS = ","};{print $2 " " $1 ","}')
   done
   AUTHOR=$(echo $AUTHOR | sed "s/\,$/./")

   # create ourselves a keyword
   PRIME_AUTHOR=$(grep "AU  -" -m 1 $1 | awk 'BEGIN{FS = " - "}; {print
$2}' | awk 'BEGIN {FS = ","};{print $2}')
   KEYWORD="$PRIME_AUTHOR$YEAR"

   # Start making our file!
   echo -ne $KEYWORD >> $2 ; echo "," >> $2
   if [ "$DOI" ] ; then
       echo -ne "\tDoi = {" >> $2 ; echo -ne $DOI >> $2 ; echo "}," >>
$2
   fi
   if [ "$AUTHOR" ] ; then
       echo -ne "\tauthor = {" >> $2 ; echo -ne $AUTHOR >> $2 ; echo
"}," >> $2
   fi
   if [ "$TITLE" ] ; then
       echo -ne "\ttitle = {" >> $2 ; echo -ne $TITLE >> $2 ; echo "},"
>> $2
   fi
   if [ "$JOURNAL" ] ; then
       echo -ne "\tjournal = {" >> $2 ; echo -ne $JOURNAL >> $2 ; echo
"}," >> $2
   fi
   if [ "$VOLUME" ] ; then
       echo -ne "\tvolume = {" >> $2 ; echo -ne $VOLUME >> $2 ; echo
"}," >> $2
   fi
   if [ "$ISSUE" ] ; then
       echo -ne "\tissue = {" >> $2 ; echo -ne $ISSUE >> $2 ; echo "},"
>> $2
   fi
   if [ "$YEAR" ] ; then
       echo -ne "\tyear = {" >> $2 ; echo -ne $YEAR >> $2 ; echo "},"
>> $2
   fi
   if [ "$URL" ] ; then
       echo -ne "\turl = {" >> $2 ; echo -ne $URL >> $2 ; echo "}," >>
$2
   fi
   if [ "$PUBLISHER" ] ; then
       echo -ne "\tpublisher = {" >> $2 ; echo -ne $PUBLISHER >> $2 ;
echo "}," >> $2
   fi
   if [ "$PAGES" ] ; then
       echo -ne "\tpages = {" >> $2 ; echo -ne $START_PAGE >> $2 ; echo
-ne "-" >> $2 ; echo -ne $END_PAGE >> $2 ; echo "}," >> $2
   fi
   echo -e "}" >> $2

   cat $2



}
if [ $# -ne 2 ] ; then
   echo "Incorrect usage"
   usage
   exit 1;
fi

if [ ! -f "$1" ] ; then
   echo "$1: No such file." 2>&1
   usage                 # Print usage message and exit.
   exit 2
fi

parse $*