Obtain package names & flavors for a given port - credit to Brian Drewery for the idea

based upon

% make flavors-package-names -f /var/db/repos/PORTS-head/security/py-requests-kerberos/Makefile PORTSDIR=/var/db/repos/PORTS-head   
py27-requests-kerberos-0.11.0_2
py36-requests-kerberos-0.11.0_2

example

[freshports@pro02-dev02 ~/ports-jail]$ sudo /usr/sbin/chroot -u freshports /var/db/freshports/ports-jail /make-flavors-package-names.sh  /var/db/repos/PORTS-head security/py-requests-kerberos
py27-requests-kerberos
py36-requests-kerberos


no flavors:

[freshports@pro02-dev02 ~/ports-jail]$ sudo /usr/sbin/chroot -u freshports /var/db/freshports/ports-jail /make-flavors-package-names.sh  /var/db/repos/PORTS-head sysutils/bacula-server
[freshports@pro02-dev02 ~/ports-jail]$ 

make-flavors-package-names.sh

#!/bin/sh
#
# This extracts information from a port Makefile regarding packages and flavors
#
# expected usage: sudo /usr/sbin/chroot -u USER JAIL /make-flavors-package-names.sh REPO_PATH PORTDIR
#
# where USER      - user as which to execute the commands.  e.g. dan
#       JAIL      - path to the jail created with the create-jail-directories.sh command. e.g. /usr/jail/FreshPorts
#       REPO_PATH - path to the SVN repository e.g. /usr/local/PORTS-RELENG_9_1_0
#       PORTDIR   - sysutils/bacula-server
#

. ./vars.sh

REPO_PATH=$1
PORT=$2

cd ${REPO_PATH}/${PORT}

FLAVORS=`${MAKE} -V FLAVORS -f ${REPO_PATH}/${PORT}/Makefile PORTSDIR=${REPO_PATH}`
for flavor in ${FLAVORS}
do
  PKGBASE=`${MAKE} make -V PKGBASE FLAVOR=${flavor} -f ${REPO_PATH}/${PORT}/Makefile PORTSDIR=${REPO_PATH}`
  if [ $? != 0 ]
  then
     return $?
  else
     echo ${PKGBASE}
  fi
done

return 0