summaryrefslogtreecommitdiffstats
path: root/lib/changelog.sh
blob: 5733353060354cb13cb5a439eb7794f2578ae190 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
#!@@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}"
				_entries=$(($_entries + 1))
				"${_cb}"
				[ ${?} -ne 0 ] && return ${_entries}
			fi
			_expect=NEXT_OR_EOF
			_blank_lines=
		elif [ "${_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}
}