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|
#! /bin/sh
#
# opkhelper
# lib/controlfields
# Functions for parsing control fields.
#
# 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/>.
# Gets a simple control field.
# Parameters:
# package name (if omitted, source package control file is read)
# field name
# Output:
# field value
# Return value:
# 0 on success
# 1 on missing field
# 255 on invalid invocation
#oh_get_simple_field()
#{
# case ${#} in
# 1)
# _control=../control
# _field=${1}
# ;;
# 2)
# _control=../${1}.pkg/control
# _field=${2}
# ;;
# *)
# return 255
# ;;
# esac
#
# _value=`sed -n "s/^${_field}:[[:space:]]*\([[:space:]]\)[[:space:]]*$/\\1/p"
# ${_control}`
#
# [ -z "${_value}" ] && return 1
# echo "${_value}"
# return 0
#}
# Gets a folded or multiline control field.
# Parameters:
# package name (if omitted, source package control file is read)
# field name
# Output:
# field value
# Return value:
# 0 on success
# 1 on missing field
# 255 on invalid invocation
#oh_get_folded_multiline_field()
oh_get_field()
{
case ${#} in
1)
_control=../control
_field=${1}
;;
2)
_control=../${1}.pkg/control
_field=${2}
;;
*)
return 255
;;
esac
# Force the 'read' utility to read until a line break character.
_OLDIFS="${IFS}"
IFS='
'
# Parse the control file.
_value=''
while read -r _line; do
if [ -z "${_value}" ]; then
_value=$(echo "${_line}" | sed -n \
"s/^${_field}:[[:space:]]*\(.*\)[[:space:]]*$/\\1/p")
else
if echo "${_line}" | grep '^ ' > /dev/null; then
_value="${_value}
${_line}"
else
break
fi
fi
done < ${_control}
# Reset the IFS.
IFS="${_OLDIFS}"
[ -z "${_value}" ] && return 1
echo "${_value}"
return 0
}
# Validates a package name.
# Parameters:
# package name
# Return value:
# 0 on valid name
# 1 on invalid name
oh_validate_pkg_name()
{
echo "${1}" | grep -E '^[a-z0-9][a-z0-9.+-]+$'
return ${?}
}
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