#!/bin/sh

# tries to locate the executable specified 
# as first parameter in the user's path.
which() {
  if [ ! -z "$1" ]; then
    for i in `echo $PATH | sed -e 's/^:/.:/g' -e 's/:$/:./g' -e 's/::/:.:/g' -e 's/:/ /g'`; do
      if [ -x "$i/$1" -a ! -d "$i/$1" ]; then
        echo "$i/$1"
        break;
      fi
    done
  fi
}

# checks for the original mozilla start script(s) 
# and restrict the "-remote" semantics to those.
run_mozilla() {
  if file "$1" | grep "script" > /dev/null && grep "NPL" "$1" > /dev/null; then
    "$1" -remote 'ping()' 2>/dev/null >/dev/null
    if [ $? -eq 2 ]; then
      "$1" "$2" &
    else
      "$1" -remote "openURL($2, new-window)" &
    fi
  else
    "$1" "$2" &
  fi
}

# checks the browser value for a %s as defined in 
# http://www.catb.org/~esr/BROWSER/index.html
run_browser() {
  echo "$1|$2" | awk '
{
    FS="|";
    $syscmd="";
    if (index($1,"%s") > 0) {
        $syscmd=sprintf($1,$2);
    } else {
        $syscmd=sprintf("%s \"%s\"",$1,$2);
    }
    system($syscmd " &");
}' > /dev/null
}

# restore search path for dynamic loader to system defaults to
# avoid version clashes of mozilla libraries shipped with OOo
case `uname -s` in
  AIX)
    LIBPATH=$SYSTEM_LIBPATH
    if [ -z "$LIBPATH" ]; then
        unset LIBPATH SYSTEM_LIBPATH
    else
        export LIBPATH; unset SYSTEM_LIBPATH
    fi
    ;;

  Darwin)
    DYLD_LIBRARY_PATH=$SYSTEM_DYLD_LIBRARY_PATH
    if [ -z "$DYLD_LIBRARY_PATH" ]; then
        unset DYLD_LIBRARY_PATH SYSTEM_DYLD_LIBRARY_PATH
    else
        export DYLD_LIBRARY_PATH; unset SYSTEM_DYLD_LIBRARY_PATH
    fi
    ;;

  HP-UX)
    SHLIB_PATH=$SYSTEM_SHLIB_PATH
    if [ -z "$SHLIB_PATH" ]; then
        unset SHLIB_PATH SYSTEM_SHLIB_PATH
    else
        export SHLIB_PATH; unset SYSTEM_SHLIB_PATH
    fi
    ;;

  IRIX*)
    LD_LIBRARYN32_PATH=$SYSTEM_LD_LIBRARYN32_PATH
    if [ -z "$LD_LIBRARYN32_PATH" ]; then
        unset LD_LIBRARYN32_PATH SYSTEM_LD_LIBRARYN32_PATH
    else
        export LD_LIBRARYN32_PATH; unset $SYSTEM_LD_LIBRARYN32_PATH
    fi
    ;;

  *)
    LD_LIBRARY_PATH=$SYSTEM_LD_LIBRARY_PATH
    if [ -z "$LD_LIBRARY_PATH" ]; then
        unset LD_LIBRARY_PATH SYSTEM_LD_LIBRARY_PATH
    else
        export LD_LIBRARY_PATH; unset SYSTEM_LD_LIBRARY_PATH
    fi
    ;;
esac

# special handling for mailto: uris
if echo $1 | grep '^mailto:' > /dev/null; then
  # check $MAILER variable
  if [ ! -z "$MAILER" ]; then
    $MAILER "$1" &
    exit 0
  else
    # mozilla derivates may need -remote semantics
    for i in thunderbird mozilla netscape; do
      mailer=`which $i`
      if [ ! -z "$mailer" ]; then
        run_mozilla "$mailer" "$1"
        exit 0
      fi
    done
    # handle all non mozilla mail clients below
    # ..
  fi
else
  # check $BROWSER variable
  if [ ! -z "$BROWSER" ]; then
    $BROWSER "$1" &
    exit 0
  else
    # mozilla derivates may need -remote semantics
    for i in firefox mozilla netscape; do
      browser=`which $i`
      if [ ! -z "$browser" ]; then
        run_mozilla "$browser" "$1"
        exit 0
      fi
    done
    # handle all non mozilla browers below
    # ..
  fi
fi
exit 1
