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# Functions for handling feed index files
#
# Copyright (C) 2013, 2014 Patrick "P. J." McDermott
#
# This file is part of the ProteanOS Development Kit.
#
# The ProteanOS Development Kit 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 3 of the
# License, or (at your option) any later version.
#
# The ProteanOS Development Kit 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 the ProteanOS Development Kit. If not, see
# <http://www.gnu.org/licenses/>.
feed_dep_fields=
feed_pkg_cb=
feed_deps_cb=
feed_fname_cb=
feed_md5sum_cb=
feed_sha256sum_cb=
feed_pkgs=
feed_pkg_include=
feed_pkg=
feed_deps=
feed_download()
{
local base_url="${1}"
local list_file="${2}"
local use_gzip="${3}"
local url=
local gunzip=
if ${use_gzip}; then
url="${base_url}/Packages.gz"
else
url="${base_url}/Packages"
fi
case "${list_file}" in
*.gz) gunzip="${GUNZIP}";;
*) gunzip='cat';;
esac
${WGET} -q -O - "${url}" | ${gunzip} >"${list_file}"
return 0
}
feed_find_pkgs()
{
local feed_idx="${1}"
local dep_fields="${2}"
local pkg_cb="${3}"
local deps_cb="${4}"
local fname_cb="${5}"
local md5sum_cb="${6}"
local sha256sum_cb="${7}"
feed_dep_fields=" $(printf '%s ' ${dep_fields} | tr 'A-Z' 'a-z')"
feed_pkg_cb="${pkg_cb}"
feed_deps_cb="${deps_cb}"
feed_fname_cb="${fname_cb}"
feed_md5sum_cb="${md5sum_cb}"
feed_sha256sum_cb="${sha256sum_cb}"
feed_pkgs=''
feed_pkg_include='false'
feed_pkg=''
feed_deps=''
{ ${GUNZIP} -c -- "${feed_idx}" || cat "${feed_idx}"; } 2>/dev/null | \
parse_control '-' feed_field_cb feed_para_cb 'Package'
printf '%s\n' "${feed_pkgs# }"
return 0
}
feed_field_cb()
{
local name="${1}"
local value="${2}"
name="$(printf '%s\n' "${name}" | tr 'A-Z' 'a-z')"
if [ "x${name}" = 'xpackage' ]; then
feed_pkg="${value}"
elif [ "x${name}" = 'xfilename' ]; then
${feed_fname_cb} "${feed_pkg}" "${value}"
elif [ "x${name}" = 'xmd5sum' ]; then
${feed_md5sum_cb} "${feed_pkg}" "${value}"
elif [ "x${name}" = 'xsha256sum' ]; then
${feed_sha256sum_cb} "${feed_pkg}" "${value}"
elif [ "x${feed_dep_fields#* ${name} }" != "x${feed_dep_fields}" ]; then
feed_deps="${feed_deps}${value}, "
fi
if ${feed_pkg_cb} ${name} ${value}; then
feed_pkg_include='true'
fi
return 0
}
feed_para_cb()
{
local new_deps=
local dep=
if ${feed_pkg_include}; then
feed_pkgs="${feed_pkgs} ${feed_pkg}"
fi
new_deps=''
IFS=','
for dep in ${feed_deps%, }; do
unset IFS
# Trim off versions and disjunctions.
dep="${dep%%(*}"
dep="${dep%%|*}"
# Trim whitespace.
dep="$(printf '%s\n' "${dep}" | sed 's/^ *//; s/ *$//')"
# In practice, this would suffice for control files generated by
# opkbuild:
# dep="${dep#[ ${HT}${LF}]}"
# dep="${dep%[ ${HT}${LF}]}"
new_deps="${new_deps} ${dep}"
done
unset IFS
${feed_deps_cb} "${feed_pkg}" "${new_deps# }"
feed_pkg_include='false'
feed_pkg=''
feed_deps=''
return 0
}
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