GenHeaders

#!/bin/sh

################################
echo -n "Function prototypes..."
################################

echo "#ifndef Prototypes_HEADER" > Prototypes.h
echo "#define Prototypes_HEADER" >> Prototypes.h
echo >> Prototypes.h
echo '#define _GNU_SOURCE' >> Prototypes.h
echo '#include <stdbool.h>' >> Prototypes.h
echo '#include <stdio.h>' >> Prototypes.h
echo '#include <string.h>' >> Prototypes.h
echo '#include <curses.h>' >> Prototypes.h
echo >> Prototypes.h
echo '#include "Structures.h"' >> Prototypes.h
echo >> Prototypes.h

includes() {
   cat "$1" | grep --text "^#include"
}

proto() {
   cat "$1" | grep --text -v "^static" | grep '^[^ ].*) {$' | sed 's,) {$,);,' >> Prototypes.h
}

process() {
   for proc in "${processed[@]}"
   do [ "$proc" == "$1" ] && return
   done
   for need in `cat "$1" | grep --text '//#needs ' | sed 's,//#needs ,,'`
   do process $need.c "$2"
   done
   "$2" "$1"
   processed=("${processed[@]}" "$1")
   echo "$1" >> order.txt
}

do_all() {
if [ -e order.txt ]
then
   for i in `cat order.txt`
   do "$1" "$i"
   done
else
   processed=( )
   for i in *.c
   do process "$i" "$1"
   done
fi
}

{
if [ `ls *.c | wc -l` != `cat order.txt | wc -l` ]
then rm -f order.txt
fi
} &> /dev/null

do_all includes | sort -u | tac >>  Prototypes.h
do_all proto

echo >> Prototypes.h
echo '#include <stdlib.h>' >> Prototypes.h
echo '#include "debug.h"' >> Prototypes.h
echo '#include <assert.h>' >> Prototypes.h
echo >> Prototypes.h
echo "#endif" >> Prototypes.h

#######################
echo
echo -n "Structures..."
#######################

echo "#ifndef Structures_HEADER" > Structures.h
echo "#define Structures_HEADER" >> Structures.h
echo >> Structures.h

cat *.c | awk '
   BEGIN {
      reading=0
   }
   /\/*{/ {
      reading=1
   }
   /}*\// {
      reading=0
   }
   /^struct .* {$/ {
      if (reading)
         print "typedef struct " $2 " " substr($2, 1, length($2)-1) ";"
   }
' >> Structures.h

struct() {
cat "$1" | awk '
   BEGIN {
      writing=0
   }
   /\/\*{/ {
      writing=1
   }
   /}\*\// {
      writing=0
   }
   {
      if (writing==1)
         writing=2
      else if (writing == 2)
         print
   }
' >> Structures.h
}

do_all struct

echo "#endif" >> Structures.h

####
echo
####