#!/bin/sh
# stand-alone server for the java application that annotates diagrams
#
# At the centre it has a triggering role on a set of stick-e notes,
# but it also assumes rules are needed to convert between the caller's
# world and the stick-e rule; on the way in these rules convert the
# setting of the present convert, and on the way out they convert
# the output from triggering
# This converted output is the final result
# 
# "-x" as first argument means extract contexts (for drawing points on map)
#
# SERVER FOR ANNOTATED GRAPHS
# has 4 parameters:
#   1: a setting of the present context e.g. <x>1998<y>34..36
#   2: the name of the notesfile (relative to pjb webpages directory)
#      example: annotations/psion.notes
#      Alternatively this can be a URL
#      In the file case, the file can be a "driver file" whose content
#      gives the files to be used; this is assumed to be the case when
#      the content begins with -f; example content: -f file1 -f file2
#   3: the rules for mapping contexts from the world of the application
#      (as given by the first parameter) to the world of the notes,
#      if rules are null, the two worlds are the same;
#      again this can be a file or a URL
#   4: (optional) extra argument for the triggerring stage (e.g. recipe and/or activeTags)
# In addition, if the switch "-x" is on the front, mapping is applied
# both to input to SetRigger and to the triggered notes; default is not to
# do the latter; -x is used for extracting the area to draw on the map;
# it is not used for triggered notes, since the user wants to see these
# in their original form.

#
# to test this outside an applet use ~pjb/java/sem*/rpsion
#
echo "Content-type: text/html"
echo
if test ! -z "$5"; then
  echo "<!-- Annotation server ERROR: extra arguments were ignored: $5 -->"
fi
#
# the old version used $1 etc; this decodes $QUERY_STRING
#echo "QUERY_STRING is $QUERY_STRING"
PATH=.:/home/pjbrown/bin:/usr/java/bin:/usr/bin:/usr/local/bin:/bin:/usr/bin:/usr/X11R6/bin:/usr/local/jdk/bin:/usr/X11R6/bin:/usr/local/jdk/bin:$PATH
cd /home/pjbrown  # all files are addressed relative to this
Q=`echo $QUERY_STRING | sed "s/+/ /g"`
echo "<!-- Q is $Q -->"
set -- $Q
echo "<!-- ARG1 is now $1 -->"
SWITCH=$1
#KOPTION=-ki # -ki means apply rules to input
#TOPTION="-et -t" # -et means switch off automatic setting of timw, -t means trigger
if test X"$1" = "X-x"; then
#  KOPTION=-kio
#  TOPTION="-et -e0 -tm" # -e0 means suppress explanation, -tm means return the field(s) that match the present context (eg match <x> and <y>)
#  SEPARATOR="<NB>-----"
  shift
fi
echo "<!-- ARG1=($1) ARG2=($2) ARG3=($3) ARG4=($4) -->"
# this is a magic command that redirects all subsequent errors to stdout
exec 2>&1

# do URL decodings (NB these may be in upper or lower case: eg %3A or %3a)
# actually the conversion below have already been done
SETTINGS=`echo $1 | sed "$SED_COMMANDS
s/%20/ /g
s/%2C/,/g
s/%2c/,/g
s/%2F/\//g
s/%2f/\//g
s/%3B/;/g
s/%3b/;/g
s/%3C/</g
s/%3c/</g
s/%3E/>/g
s/%3e/>/g
"`
echo "<!--[[SETTINGS=$SETTINGS]]-->"

EXTRAS=`echo $4 | sed "$SED_COMMANDS
s/%20/ /g
s/%2C/,/g
s/%2c/,/g
s/%2F/\//g
s/%2f/\//g
s/%3B/;/g
s/%3b/;/g
s/%3C/</g
s/%3c/</g
s/%3E/>/g
s/%3e/>/g
"`
echo "<!--[[EXTRAS=$EXTRAS]]-->"
# remove encoded / from filename
FILE=`echo $2 | sed "s/%2F/\//g
s/%2f/\//g
s/%3A/:/g
s/%3a/:/g
"`
# remove : and / from URL
RULES=`echo $3 | sed "s/%2F/\//g
s/%2f/\//g
s/%3A/:/g
s/%3a/:/g
"`
echo "<!--[[RULES=$RULES]]-->"
#
# FILE itself may itself contain a list of files, with -f on the front
# if so set FILE to the content of FILE
#FILE="$FILE.notes"
if test -r "$FILE"; then
  set -- `head -1 $FILE`
  if test "$1" = "-f"; then
    FILE=`cat $FILE`
  fi
fi
echo "<!-- FILE=$FILE -->"
if test -f oldcode; then
  # This just calls the SeTrigger module (which has the name "combined")
  # SeTrigger may in turn use SeMapper to apply the conversion rules
  # sometimes rm does not work because it cannot chain back from the current directory
  #  hence the line below (which ensures that a new /tmp/entities.sgml is used):
  (cd / && rm -f /tmp/entities.sgml)
  # ask "combined" to output tags in the form: <x>
  # was:START_TAG_TEMPLATE="|NB||EXPLAIN||*|<%s>|" export START_TAG_TEMPLATE
  SEPARATOR="" # separator of notes triggered by SeTrigger
  export SEPARATOR
  START_OF_OUTPUT_USERTAG=" <!--USERTAG:" export START_OF_OUTPUT_USERTAG
  END_OF_OUTPUT_USERTAG="--> " export END_OF_OUTPUT_USERTAG

  START_TAG_TEMPLATE="|*|<%s>|" export START_TAG_TEMPLATE
  END_TAG_TEMPLATE="" export END_TAG_TEMPLATE
  echo " <!--Trying: combined -cs -f $FILE $KOPTION $RULES  -M $SETTINGS $TOPTION -->"
  bin/combined -f $FILE $KOPTION "$RULES" -M "$SETTINGS" $TOPTION
  #./combined -f $FILE $KOPTION "$RULES" -M "$SETTINGS" -t -E present
  (cd / && rm -f /tmp/entities.sgml)
else
  MATCHER=java/semapper/matcher
  if test "$SWITCH" = -x; then
    # extract the bounds
    $MATCHER "$RULES" "<recipe><sampleMatches>EXTRACT</recipe>" -a -d "$SETTINGS"
  else
    # here we do 3 things: apply the rules to convert the present context; trigger; convert back again
    # assume $SETTINGS may be a literal or a file or a URL
    RESULT1=`$MATCHER  "$RULES" -d "$SETTINGS"`
    #echo "<!--RESULT1=$RESULT1-->"
    #echo "Calling $MATCHER -a $FILE -d $EXTRAS -l $RESULT1"
    RESULT2=`$MATCHER -a $FILE -d "$EXTRAS" -l "$RESULT1"`
    #echo "<!--RESULT2=$RESULT2-->"
    $MATCHER -r "$RULES" -l "$RESULT2"
  fi
fi