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#!@@SHELL@@
#
# opkhelper
# lib/changelog
# Functions for parsing changelogs.
#
# Copyright (C) 2012 Patrick "P. J." McDermott
#
# 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 3 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, see <http://www.gnu.org/licenses/>.
. @@LIBDIR@@/opkhelper/messages
oh_changelog_parse_error()
{
_file="${1}"
_line_nr="${2}"
_error="${3}"
_expect_id="${4}"
case "${_expect_id}" in
FIRST_HEADING) _expect_str='first heading';;
NEXT_OR_EOF) _expect_str='next heading or eof';;
START_CHANGES) _expect_str='start of change data';;
CHANGES_OR_TRAILER) _expect_str='more change data or trailer';;
*) _expect_str='unknown';;
esac
_file_info=$(printf '%20s(l%d):' "${_file}" "${_line_nr}")
oh_warn "${_file_info} ${_error}" "${_expect_str}"
}
oh_changelog_parse()
{
# Parsing logic based on that of dpkg.
_file="${1}"
_cb="${2}"
_expect=FIRST_HEADING
_line_nr=0
_entries=0
while IFS= read _line; do
_line_nr=$(($_line_nr + 1))
if [ -z "${_line}" ]; then
if [ "${_expect}" = START_CHANGES ]; then
OH_CHANGELOG_CHANGES="${OH_CHANGELOG_CHANGES}
${_line}"
elif [ "${_expect}" = NEXT_OR_EOF ]; then
:
elif [ "${_expect}" != CHANGES_OR_TRAILER ]; then
oh_changelog_parse_error "${_file}" "${_line_nr}" \
'found blank line where expected %s' "${_expect}"
else
_blank_lines="${_blank_lines}
${_line}"
fi
elif [ "${_line# }" = "${_line}" ]; then
if [ "${_expect}" != FIRST_HEADING -a \
"${_expect}" != NEXT_OR_EOF ]; then
oh_changelog_parse_error "${_file}" "${_line_nr}" \
'found start of entry where expected %s' "${_expect}"
fi
_source="${_line%% (*}"
_line_="${_line#* (}"
_distribution="${_line_##*) }"
_line_="${_line_%) *}"
_version="${_line_}"
if [ -z "${_source}" -o -z "${_distribution}" -o \
-z "${_version}" -o \
"${_version% *}" != "${_version}" ]; then
oh_changelog_parse_error "${_file}" "${_line_nr}" \
'badly formatted heading line'
OH_CHANGELOG_SOURCE=
OH_CHANGELOG_VERSION=
OH_CHANGELOG_DISTRIBUTION=
OH_CHANGELOG_CHANGES=
else
OH_CHANGELOG_SOURCE="${_source}"
OH_CHANGELOG_VERSION="${_version}"
OH_CHANGELOG_DISTRIBUTION="${_distribution}"
OH_CHANGELOG_CHANGES="${_line}"
fi
_expect=START_CHANGES
_blank_lines=
elif [ "${_line# -- }" != "${_line}" ]; then
if [ "${_expect}" != CHANGES_OR_TRAILER ]; then
oh_changelog_parse_error "${_file}" "${_line_nr}" \
'found trailer where expected %s' "${_expect}"
fi
_line="${_line# -- }"
_maintainer="${_line%% *}"
_date="${_line#* }"
if [ -z "${_maintainer}" -o -z "${_date}" -o \
"${_maintainer}" = "${_date}" ]; then
oh_changelog_parse_error "${_file}" "${_line_nr}" \
'badly formatted trailer line'
OH_CHANGELOG_MAINTAINER=
OH_CHANGELOG_DATE=
elif [ -n "${OH_CHANGELOG_SOURCE}" ]; then
OH_CHANGELOG_MAINTAINER="${_maintainer}"
OH_CHANGELOG_DATE="${_date}"
"${_cb}"
_entries=$(($_entries + 1))
fi
_expect=NEXT_OR_EOF
_blank_lines=
elif [ "${_line# --}" != "${_line}" ]; then
oh_changelog_parse_error "${_file}" "${_line_nr}" \
'badly formatted trailer line'
elif [ "${_line## }" != "${_line}" ]; then
if [ "${_expect}" != START_CHANGES -a \
"${_expect}" != CHANGES_OR_TRAILER ]; then
oh_changelog_parse_error "${_file}" "${_line_nr}" \
'found change data where expected %s' "${_expect}"
fi
OH_CHANGELOG_CHANGES="${OH_CHANGELOG_CHANGES}
${_blank_lines}${_line}"
_expect=CHANGES_OR_TRAILER
_blank_lines=
else
oh_changelog_parse_error "${_file}" "${_line_nr}" \
'unrecognized line'
_blank_lines=
fi
done <"${_file}"
if [ "${_expect}" != NEXT_OR_EOF ]; then
oh_changelog_parse_error "${_file}" "${_line_nr}" \
'found eof where expected %s' "${_expect}"
fi
return ${_entries}
}
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