#!/bin/sh
# $NetBSD: printdepends,v 1.23 2006/01/15 23:33:23 rillig Exp $
#

# Copyright (c) 1999, 2000 Hubert Feyrer <hubertf@NetBSD.org>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
# 3. All advertising materials mentioning features or use of this software
#    must display the following acknowledgement:
#      This product includes software developed by Hubert Feyrer for
#	the NetBSD Project.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#

# usage: printdepends [brokenfile [bulkfilesdir]]
#
# Generates a list of package dependencies suitable for tsort(1) on
# stdout. Each line of the output has two fields: the package directory
# of the dependency and the package directory of the depending package
# (both in the form category/package).
#
# If <brokenfile> is given, package-specific errors are logged to
# <bulkfilesdir>/${pkgdir}/<brokenfile>. Otherwise no additional logging
# takes place.
#
# The default for <bulkfilesdir> is the pkgsrc directory itself. If
# <bulkfilesdir> differs from the pkgsrc directory, all directories
# that are needed for the log files are created automatically.
#
# Note: printdepends must be called from a pkgsrc root directory.

set -e

# Pull in PKGLIST
if [ -f "$BULK_BUILD_CONF" ]; then
	. $BULK_BUILD_CONF
else
	. `dirname $0`/build.conf
fi

#
# Global variables
#

# The brokenfile_flag variable tells whether we want package-specific
# log files at all. If it is set to "yes", the mkdirs_flag
# variable tells whether the directories of the package-specific log
# files are created if necessary.
brokenfile_flag="yes"
mkdirs_flag="no"
pkgsrcdir="${PWD}"
bulkfilesdir="${pkgsrcdir}"
brokenfile=""

#
# Command line parsing
#

case $# in
0)	brokenfile_flag="no"
	;;
1)	brokenfile="$1"
	;;
2)	brokenfile="$1"
	bulkfilesdir="$2"
	if [ "${bulkfilesdir}" != "${pkgsrcdir}" ]; then
		mkdirs_flag="yes"
	fi
	;;
*)	echo "usage: $0 [brokenfile [bulkfilesdir]]" 1>&2
	exit 1
	;;
esac

#
# Sanity checks
#

case ${BMAKE-""} in
"")	echo "$0: error: BMAKE must be set and non-empty." 1>&2
	exit 1;;
esac
case ${bulkfilesdir} in
/*)	;;
*)	echo "$0: error: The <bulkfilesdir> argument must be absolute." 1>&2
	exit 1;;
esac
case ${brokenfile} in
*/*)	echo "$0: error: The <brokenfile> argument must not contain a slash." 1>&2
	exit 1;;
esac

#
# Get additional system information
#

cd "${pkgsrcdir}/pkgtools/pkglint"
GREP=`${BMAKE} show-var VARNAME=GREP USE_TOOLS=grep`
MKDIR=`${BMAKE} show-var VARNAME=MKDIR USE_TOOLS=mkdir`
SED=`${BMAKE} show-var VARNAME=SED USE_TOOLS=sed`
cd "${pkgsrcdir}"

case $mkdirs_flag in
yes)	mkbulkdir="${MKDIR}";;
*)	mkbulkdir=":";;
esac

case ${PKGLIST} in
"")	# List of all packages, from pkgsrc/*/Makefile
	list=`${GREP} '^SUBDIR+=' */Makefile | ${GREP} -v '^regress/' | ${SED} -e 's,/Makefile:SUBDIR+=[[:space:]]*,/,' -e 's,#.*,,'`
	;;
*)	list="${PKGLIST}"
	;;
esac

for pkgdir in $list; do
	if cd "${pkgsrcdir}/${pkgdir}"; then
		if deps=`${BMAKE} show-depends-dirs`; then
			case ${deps} in
			"")	# Make the package depend on itself.
				# Otherwise it would not show up in the
				# dependency graph.
				echo "${pkgdir} ${pkgdir}";;
			*)	for dep in $deps; do
					echo "${dep} ${pkgdir}"
				done;;
			esac
		else
			echo "$0: error: could not extract dependencies for ${pkgdir} -- skipping." 1>&2

			case $brokenfile_flag in
			no)	continue;;
			esac

			${mkbulkdir} "${bulkfilesdir}/${pkgdir}"
			{ echo "[printdepends] command failed: ${BMAKE} show-depends-dirs"
			  ( ${BMAKE} show-depends-dirs
			  ) || true
			} >> "${bulkfilesdir}/${pkgdir}/${brokenfile}" 2>&1
		fi
	else
		${mkbulkdir} "${bulkfilesdir}"
		{ echo "[printdepends] command failed: cd ${pkgsrcdir}/${pkgdir}"
		  ( cd "${pkgsrcdir}/${pkgdir}"
		  ) || true
		} 1>&2
	fi
done