summaryrefslogtreecommitdiff
path: root/libltdl/config/git-hooks/commit-msg
blob: 448b64df44160da6d86deef1ffa1d69d9721f02e (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
#!/bin/sh

# An example hook script for catching duplicate or malformed Co-authored-by
# or Copyright-paperwork-exempt lines in the commit message.
# Written by Gary V. Vaughan <gary@gnu.org>, 2011

# Copyright (C) 2011-2014 Free Software Foundation, Inc.
# This is free software; see the source for copying conditions.  There is NO
# warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

# Libtoolize 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.
#
# Libtoolize 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/>.


: ${SED="sed"}
test set = ${ECHO+'set'} = set || ECHO='printf %s\n'

basename="$SED -e "'s|^.*/||'

nl='
'

progpath="$0"
progname=`$ECHO "$progpath" |$basename`

log_file=$1
export log_file

fn_error ()
{
    prefix="$progname: error: "

    save_IFS=$IFS
    IFS=$nl
    for line in $*; do
      IFS=$save_IFS
      $ECHO "$prefix$line" 1>&2
      prefix="$progname:        "
    done
    IFS=$save_IFS
}

fn_re_edit ()
{
    $ECHO 'Press return to edit. Ctrl-C to abort...' >&2
    read v
    ${EDITOR-'vi'} "$log_file"
}

fn_rewrite ()
{
    # Output once to stderr
    fn_error "$*"

    # And again as a comment in the log_file ready for re-editing
    $ECHO "$*" |$SED 's,^,# ,'
    echo
    cat "$log_file"
}

fn_check_msg ()
{
    return_status=0

    CAB_re='^Co-authored-by: '
    CPR_re='^Copyright-paperwork-exempt: '

    # Flag duplicated Co-authored-by lines.
    dups=`grep "$CAB_re" "$log_file" 2>/dev/null \
        |sort |uniq -c |sed -e '/^[	 ]*1[	 ]/d'`

    test -n "$dups" && {
	$ECHO 'Duplicate Co-authored-by lines:
'"$dups"
	return_status=1
    }

    # Make sure each Co-authored-by line contains a valid email.
    email_re='<.*@.*\..*>'

    grep "$CAB_re" "$log_file" 2>/dev/null \
        |while read CAB; do
            test 0 -eq `expr "$CAB" : ".*$email_re"` && {
                echo "Malformed or missing email in \`$CAB'"
	        return_status=1
            }
         done

    # Flag duplicated Copyright-paperwork-exempt lines.
    count=`grep "$CPR_re" "$log_file" 2>/dev/null \
      |wc |sed -e 's,^[	 ]*,,;s,[ 	].*$,,'`

    test 2 -gt "$count" || {
      $ECHO 'More than one Copyright-paperwork-exempt line.'
      return_status=1
    }

    # Make sure Copyright-paperwork-exempt line is valid.
    if grep "${CPR_re}[Nn]" "$log_file" >/dev/null 2>&1; then
      $ECHO "\
\`Copyright-paperwork-exempt: No' is redundant, please remove."
      return_status=1
    else
      not_yes=`grep "${CPR_re}" "$log_file" 2>/dev/null \
        |grep -v "${CPR_re}Yes\$"`

      test -n "$not_yes" && {
        $ECHO "\`Copyright-paperwork-exempt' setting must be \`Yes'."
        return_status=1
      }
    fi

    return $return_status
}

while :; do
    err=`fn_check_msg` && break
    fn_rewrite "$err" > "${log_file}T" && mv "${log_file}T" "$log_file"
    fn_re_edit
done