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#!/bin/bash
#   pbuilder -- personal Debian package builder
#   Copyright (C) 2001,2002,2003,2005-2007 Junichi Uekawa
#   Copyright (C) 2007 Loïc Minier
#
#   This program is free software; you can redistribute it and/or modify
#   it under the terms of the GNU General Public License as published by
#   the Free Software Foundation; either version 2 of the License, or
#   (at your option) any later version.
#
#   This program is distributed in the hope that it will be useful,
#   but WITHOUT ANY WARRANTY; without even the implied warranty of
#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#   GNU General Public License for more details.
#
#   You should have received a copy of the GNU General Public License
#   along with this program; if not, write to the Free Software
#   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
#
# module to satisfy build dependencies; aptitude flavor

set -e

export PBUILDER_PKGLIBDIR="${PBUILDER_PKGLIBDIR:-$PBUILDER_ROOT/usr/lib/pbuilder}"

. "$PBUILDER_PKGLIBDIR"/pbuilder-satisfydepends-funcs


# filter out dependencies sent on input not for this arch; deps can have
# multiple lines; output is on a single line or "" if empty
function filter_arch_deps() {
    local arch="$1"
    local INSTALLPKGMULTI
    local INSTALLPKG

    # split on ","
    sed 's/[[:space:]]*,[[:space:]]*/\n/g' |
    while read INSTALLPKGMULTI; do
        echo "$INSTALLPKGMULTI" |
            # split on "|"
            sed 's/[[:space:]]*|[[:space:]]*/\n/g' |
            while read INSTALLPKG; do
                if echo "$INSTALLPKG" | grep -q '\['; then
                    if checkbuilddep_archdeps "$INSTALLPKG" "$ARCH"; then
                        continue
                    fi
                fi
                # output the selected package
                echo "$INSTALLPKG"
            done |
            # remove the arch list and add " | " between entries
            sed 's/\[.*\]//; $,$! s/$/ |/' |
            xargs --no-run-if-empty
    done |
    # add ", " between entries
    sed '$,$! s/$/,/' |
    xargs --no-run-if-empty
}

function checkbuilddep_internal () {
# Use this function to fulfill the dependency (almost)
    local ARCH=$($CHROOTEXEC dpkg-architecture -qDEB_HOST_ARCH)
    local BUILD_DEP_DEB_DIR
    local BUILD_DEP_DEB_CONTROL
    local DEPENDS
    local CONFLICTS
    echo " -> Attempting to satisfy build-dependencies"
    DEPENDS="$(get_build_deps | filter_arch_deps "$ARCH")"
    CONFLICTS="$(get_build_conflicts | filter_arch_deps "$ARCH")"
    echo " -> Creating pbuilder-satisfydepends-dummy package"
    BUILD_DEP_DEB_DIR="/tmp/satisfydepends-aptitude"
    BUILD_DEP_DEB_CONTROL="$BUILD_DEP_DEB_DIR/pbuilder-satisfydepends-dummy/DEBIAN/control"
    $CHROOTEXEC mkdir -p "$BUILD_DEP_DEB_DIR/pbuilder-satisfydepends-dummy/DEBIAN/"
    $CHROOTEXEC sh -c "cat >\"$BUILD_DEP_DEB_CONTROL\"" <<EOF
Package: pbuilder-satisfydepends-dummy
Version: 0.invalid.0
Architecture: $ARCH
Maintainer: Debian Pbuilder Team <pbuilder-maint@lists.alioth.debian.org>
Description: Dummy package to satisfy dependencies with aptitude - created by pbuilder
 This package was created automatically by pbuilder to satisfy the
 build-dependencies of the package being currently built.
EOF
    if [ -n "$DEPENDS" ]; then
        $CHROOTEXEC sh -c "echo \"Depends: $DEPENDS\" >>\"$BUILD_DEP_DEB_CONTROL\""
    fi
    if [ -n "$CONFLICTS" ]; then
        $CHROOTEXEC sh -c "echo \"Conflicts: $CONFLICTS\" >>\"$BUILD_DEP_DEB_CONTROL\""
    fi
    $CHROOTEXEC sh -c "cat \"$BUILD_DEP_DEB_CONTROL\""
    $CHROOTEXEC sh -c "dpkg-deb -b \"$BUILD_DEP_DEB_DIR/pbuilder-satisfydepends-dummy\""
    $CHROOTEXEC dpkg -i "$BUILD_DEP_DEB_DIR/pbuilder-satisfydepends-dummy.deb" || true
    $CHROOTEXEC aptitude -y --without-recommends -o APT::Install-Recommends=false -o Aptitude::CmdLine::Ignore-Trust-Violations=true -o Aptitude::ProblemResolver::StepScore=100 install pbuilder-satisfydepends-dummy
    # check whether the aptitude's resolver kept the package
    if ! $CHROOTEXEC dpkg -l pbuilder-satisfydepends-dummy 2>/dev/null | grep -q ^ii; then
        echo "Aptitude couldn't satisfy the build dependencies"
        exit 1
    fi
    echo " -> Finished parsing the build-deps"
}


function print_help () {
    # print out help message
    cat <<EOF
pbuilder-satisfydepends -- satisfy dependencies
Copyright 2002-2007  Junichi Uekawa <dancer@debian.org>

--help:        give help
--control:     specify control file (debian/control, *.dsc)
--chroot:      operate inside chroot
--binary-all:  include binary-all
--binary-arch: include binary-arch only
--echo:        echo mode, do nothing. (--force-version required for most operation)
--force-version: skip version check.
--continue-fail: continue even when failed.

EOF
}

. "$PBUILDER_PKGLIBDIR"/pbuilder-satisfydepends-checkparams