#!/bin/sh

givup() {
	echo $*
	exit 1
}

usage() {
echo "$0 --extname=module [--proto=file] [--stubs=file] [--xml[=file]]"
echo "           [--skel=dir] [--full-xml] [--no-help]"
echo ""
echo "  --extname=module   module is the name of your extension"
echo "  --proto=file       file contains prototypes of functions to create"
echo "  --stubs=file       generate only function stubs in file"
echo "  --xml              generate xml documentation to be added to phpdoc-svn"
echo "  --skel=dir         path to the skeleton directory"
echo "  --full-xml         generate xml documentation for a self-contained extension"
echo "                     (not yet implemented)"
echo "  --no-help          don't try to be nice and create comments in the code"
echo "                     and helper functions to test if the module compiled"
exit 1
}

if test $# = 0; then
  usage
fi

while test $# -gt 0; do
  case "$1" in
  -*=*) optarg=`echo "$1" | sed 's/[-_a-zA-Z0-9]*=//'` ;;
  *) optarg= ;;
  esac

  case $1 in
    --extname=?*)
	extname=$optarg
	EXTNAME=`echo $extname | tr "[:lower:]" "[:upper:]"`
	;;
    --proto=?*)
	proto=$optarg
	;;
    --stubs=*)
	stubs=yes
	stubfile=$optarg
	;;
    --xml)
	xml="yes"
	;;
    --xml=?*)
	xml=$optarg
	;;
    --full-xml)
	full_xml="yes"
	;;
    --no-help)
	no_help="yes"
	;;
    --skel=?*)
	skel_dir=$optarg
	;;
    *)
	usage
	;;
  esac
  shift
done

if test -d "$extname" ; then
  givup "Directory $extname already exists."
fi

if test -z "$skel_dir"; then
  skel_dir="/usr/lib/php5/skeleton"
fi

## convert skel_dir to full path
skel_dir=`cd $skel_dir && pwd`

test -d $skel_dir || givup "directory $skel_dir does not exist or is not directory"

if echo '\c' | grep -s c >/dev/null 2>&1
then
    ECHO_N="echo -n"
    ECHO_C=""
else
    ECHO_N="echo"
    ECHO_C='\c'
fi

if test -z "$stubs"; then
  echo "Creating directory $extname"
  stubfile=$extname"/function_stubs"
  mkdir $extname || givup "Cannot create directory $extname"
fi

if test -n "$proto"; then
  cat $proto | awk -v extname=$extname -v stubs=$stubs -v stubfile=$stubfile -v xml=$xml -v full_xml=$full_xml -v i_know_what_to_do_shut_up_i_dont_need_your_help_mode=$no_help -f $skel_dir/create_stubs
fi

if test -z "$stubs"; then
  cd $extname
  chmod 755 .

$ECHO_N "Creating basic files:$ECHO_C"

$ECHO_N " config.m4$ECHO_C"
cat >config.m4 <<eof
dnl \$Id\$
dnl config.m4 for extension $extname

dnl Comments in this file start with the string 'dnl'.
dnl Remove where necessary. This file will not work
dnl without editing.

dnl If your extension references something external, use with:

dnl PHP_ARG_WITH($extname, for $extname support,
dnl Make sure that the comment is aligned:
dnl [  --with-$extname             Include $extname support])

dnl Otherwise use enable:

dnl PHP_ARG_ENABLE($extname, whether to enable $extname support,
dnl Make sure that the comment is aligned:
dnl [  --enable-$extname           Enable $extname support])

if test "\$PHP_$EXTNAME" != "no"; then
  dnl Write more examples of tests here...

  dnl # --with-$extname -> check with-path
  dnl SEARCH_PATH="/usr/local /usr"     # you might want to change this
  dnl SEARCH_FOR="/include/$extname.h"  # you most likely want to change this
  dnl if test -r \$PHP_$EXTNAME/\$SEARCH_FOR; then # path given as parameter
  dnl   ${EXTNAME}_DIR=\$PHP_$EXTNAME
  dnl else # search default path list
  dnl   AC_MSG_CHECKING([for $extname files in default path])
  dnl   for i in \$SEARCH_PATH ; do
  dnl     if test -r \$i/\$SEARCH_FOR; then
  dnl       ${EXTNAME}_DIR=\$i
  dnl       AC_MSG_RESULT(found in \$i)
  dnl     fi
  dnl   done
  dnl fi
  dnl
  dnl if test -z "\$${EXTNAME}_DIR"; then
  dnl   AC_MSG_RESULT([not found])
  dnl   AC_MSG_ERROR([Please reinstall the $extname distribution])
  dnl fi

  dnl # --with-$extname -> add include path
  dnl PHP_ADD_INCLUDE(\$${EXTNAME}_DIR/include)

  dnl # --with-$extname -> check for lib and symbol presence
  dnl LIBNAME=$extname # you may want to change this
  dnl LIBSYMBOL=$extname # you most likely want to change this 

  dnl PHP_CHECK_LIBRARY(\$LIBNAME,\$LIBSYMBOL,
  dnl [
  dnl   PHP_ADD_LIBRARY_WITH_PATH(\$LIBNAME, \$${EXTNAME}_DIR/\$PHP_LIBDIR, ${EXTNAME}_SHARED_LIBADD)
  dnl   AC_DEFINE(HAVE_${EXTNAME}LIB,1,[ ])
  dnl ],[
  dnl   AC_MSG_ERROR([wrong $extname lib version or lib not found])
  dnl ],[
  dnl   -L\$${EXTNAME}_DIR/\$PHP_LIBDIR -lm
  dnl ])
  dnl
  dnl PHP_SUBST(${EXTNAME}_SHARED_LIBADD)

  PHP_NEW_EXTENSION($extname, $extname.c, \$ext_shared)
fi
eof

$ECHO_N " config.w32$ECHO_C"
cat >config.w32 <<eof
// \$Id\$
// vim:ft=javascript

// If your extension references something external, use ARG_WITH
// ARG_WITH("$extname", "for $extname support", "no");

// Otherwise, use ARG_ENABLE
// ARG_ENABLE("$extname", "enable $extname support", "no");

if (PHP_$EXTNAME != "no") {
	EXTENSION("$extname", "$extname.c");
}

eof

$ECHO_N " .gitignore$ECHO_C"
cat >.gitignore <<eof
.deps
*.lo
*.la
.libs
acinclude.m4
aclocal.m4
autom4te.cache
build
config.guess
config.h
config.h.in
config.log
config.nice
config.status
config.sub
configure
configure.in
include
install-sh
libtool
ltmain.sh
Makefile
Makefile.fragments
Makefile.global
Makefile.objects
missing
mkinstalldirs
modules
run-tests.php
tests/*/*.diff
tests/*/*.out
tests/*/*.php
tests/*/*.exp
tests/*/*.log
tests/*/*.sh
eof

$ECHO_N " $extname.c$ECHO_C"
echo "s/extname/$extname/g" > sedscript
echo "s/EXTNAME/$EXTNAME/g"  >> sedscript
echo '/__function_entries_here__/r function_entries'  >> sedscript
echo '/__function_stubs_here__/r function_stubs'  >> sedscript
echo '/__header_here__/r ../../header'  >> sedscript
echo '/__footer_here__/r ../../footer'  >> sedscript
echo '/__function_entries_here__/D'  >> sedscript
echo '/__function_stubs_here__/D'  >> sedscript
echo '/__header_here__/D'  >> sedscript
echo '/__footer_here__/D'  >> sedscript
if [ ! -z "$no_help" ]; then
    echo "/confirm_$extname_compiled/D" >> sedscript
    echo '/Remove the following/,/^\*\//D' >> sedscript
    echo 's/[[:space:]]\/\*.\+\*\///' >> sedscript
    echo 's/^\/\*.*\*\/$//' >> sedscript
    echo '/^[[:space:]]*\/\*/,/^[[:space:]]*\*\//D' >> sedscript
fi

sed -f sedscript < $skel_dir/skeleton.c > $extname.c


$ECHO_N " php_$extname.h$ECHO_C"
echo "s/extname/$extname/g" > sedscript
echo "s/EXTNAME/$EXTNAME/g" >> sedscript
echo '/__function_declarations_here__/r function_declarations' >> sedscript
echo '/__header_here__/r ../../header'  >> sedscript
echo '/__footer_here__/r ../../footer'  >> sedscript
echo '/__function_declarations_here__/D' >> sedscript
echo '/__header_here__/D'  >> sedscript
echo '/__footer_here__/D'  >> sedscript
if [ ! -z "$no_help" ]; then
    echo "/confirm_$extname_compiled/D" >> sedscript
    echo 's/[[:space:]]\/\*.\+\*\///' >> sedscript
    echo 's/^\/\*.*\*\/$//' >> sedscript
    echo '/^[[:space:]]*\/\*/,/^[[:space:]]*\*\//D' >> sedscript
fi
sed -f sedscript <$skel_dir/php_skeleton.h > php_$extname.h

$ECHO_N " CREDITS$ECHO_C"
echo "s/extname/$extname/g" > sedscript
sed -f sedscript <$skel_dir/CREDITS > CREDITS

$ECHO_N " EXPERIMENTAL$ECHO_C"
echo "s/extname/$extname/g" > sedscript
sed -f sedscript <$skel_dir/EXPERIMENTAL > EXPERIMENTAL

$ECHO_N " tests/001.phpt$ECHO_C"
mkdir tests || givup "Cannot create tests directory"
chmod 755 tests
sed -f sedscript <$skel_dir/tests/001.phpt > tests/001.phpt

if test -z "$stubs" && test -z "$no_help"; then
  $ECHO_N " $extname.php$ECHO_C"
  sed \
    -e "s/extname/$extname/g" \
    <$skel_dir/skeleton.php \
    > $extname.php
fi

rm sedscript

if test -n "$proto"; then
  if test -z "$stubs"; then
    rm function_entries
    rm function_declarations
    rm function_stubs
  fi
  if test -f function_warning; then
    rm function_warning
    warning="
NOTE! Because some arguments to functions were resources, the code generated
cannot yet be compiled without editing. Please consider this to be step 4.5
in the instructions above. 
"
  fi
fi

find . -type f | xargs chmod 644 
find . -type d | xargs chmod 755
fi

echo " [done]."

if test -z "$no_help" && test -z "$stubs"; then
  cat <<eof

To use your new extension, you will have to execute the following steps:

1.  $ cd ..
2.  $ vi ext/$extname/config.m4
3.  $ ./buildconf
4.  $ ./configure --[with|enable]-$extname
5.  $ make
6.  $ ./sapi/cli/php -f ext/$extname/$extname.php
7.  $ vi ext/$extname/$extname.c
8.  $ make

Repeat steps 3-6 until you are satisfied with ext/$extname/config.m4 and
step 6 confirms that your module is compiled into PHP. Then, start writing
code and repeat the last two steps as often as necessary.
$warning
eof
fi