1 #!/usr/bin/env bash !! 1 #!/bin/bash
2 # SPDX-License-Identifier: GPL-2.0 <<
3 # Manipulate options in a .config file from th 2 # Manipulate options in a .config file from the command line
4 3
5 myname=${0##*/} <<
6 <<
7 # If no prefix forced, use the default CONFIG_ 4 # If no prefix forced, use the default CONFIG_
8 CONFIG_="${CONFIG_-CONFIG_}" 5 CONFIG_="${CONFIG_-CONFIG_}"
9 6
10 # We use an uncommon delimiter for sed substit <<
11 SED_DELIM=$(echo -en "\001") <<
12 <<
13 usage() { 7 usage() {
14 cat >&2 <<EOL 8 cat >&2 <<EOL
15 Manipulate options in a .config file from the 9 Manipulate options in a .config file from the command line.
16 Usage: 10 Usage:
17 $myname options command ... !! 11 config options command ...
18 commands: 12 commands:
19 --enable|-e option Enable option 13 --enable|-e option Enable option
20 --disable|-d option Disable option 14 --disable|-d option Disable option
21 --module|-m option Turn option into 15 --module|-m option Turn option into a module
22 --set-str option string 16 --set-str option string
23 Set option to "st 17 Set option to "string"
24 --set-val option value 18 --set-val option value
25 Set option to val 19 Set option to value
26 --undefine|-u option Undefine option 20 --undefine|-u option Undefine option
27 --state|-s option Print state of op 21 --state|-s option Print state of option (n,y,m,undef)
28 22
29 --enable-after|-E beforeopt option 23 --enable-after|-E beforeopt option
30 Enable option dir 24 Enable option directly after other option
31 --disable-after|-D beforeopt option 25 --disable-after|-D beforeopt option
32 Disable option di 26 Disable option directly after other option
33 --module-after|-M beforeopt option 27 --module-after|-M beforeopt option
34 Turn option into 28 Turn option into module directly after other option
35 29
36 commands can be repeated multiple time 30 commands can be repeated multiple times
37 31
38 options: 32 options:
39 --file config-file .config file to c 33 --file config-file .config file to change (default .config)
40 --keep-case|-k Keep next symbols 34 --keep-case|-k Keep next symbols' case (dont' upper-case it)
41 35
42 $myname doesn't check the validity of the .con !! 36 config doesn't check the validity of the .config file. This is done at next
43 make time. 37 make time.
44 38
45 By default, $myname will upper-case the given !! 39 By default, config will upper-case the given symbol. Use --keep-case to keep
46 the case of all following symbols unchanged. 40 the case of all following symbols unchanged.
47 41
48 $myname uses 'CONFIG_' as the default symbol p !! 42 config uses 'CONFIG_' as the default symbol prefix. Set the environment
49 variable CONFIG_ to the prefix to use. Eg.: CO !! 43 variable CONFIG_ to the prefix to use. Eg.: CONFIG_="FOO_" config ...
50 EOL 44 EOL
51 exit 1 45 exit 1
52 } 46 }
53 47
54 checkarg() { 48 checkarg() {
55 ARG="$1" 49 ARG="$1"
56 if [ "$ARG" = "" ] ; then 50 if [ "$ARG" = "" ] ; then
57 usage 51 usage
58 fi 52 fi
59 case "$ARG" in 53 case "$ARG" in
60 ${CONFIG_}*) 54 ${CONFIG_}*)
61 ARG="${ARG/${CONFIG_}/}" 55 ARG="${ARG/${CONFIG_}/}"
62 ;; 56 ;;
63 esac 57 esac
64 if [ "$MUNGE_CASE" = "yes" ] ; then 58 if [ "$MUNGE_CASE" = "yes" ] ; then
65 ARG="`echo $ARG | tr a-z A-Z`" 59 ARG="`echo $ARG | tr a-z A-Z`"
66 fi 60 fi
67 } 61 }
68 62
69 txt_append() { <<
70 local anchor="$1" <<
71 local insert="$2" <<
72 local infile="$3" <<
73 local tmpfile="$infile.swp" <<
74 <<
75 # sed append cmd: 'a\' + newline + tex <<
76 cmd="$(printf "a\\%b$insert" "\n")" <<
77 <<
78 sed -e "/$anchor/$cmd" "$infile" >"$tm <<
79 # replace original file with the edite <<
80 mv "$tmpfile" "$infile" <<
81 } <<
82 <<
83 txt_subst() { <<
84 local before="$1" <<
85 local after="$2" <<
86 local infile="$3" <<
87 local tmpfile="$infile.swp" <<
88 <<
89 sed -e "s$SED_DELIM$before$SED_DELIM$a <<
90 # replace original file with the edite <<
91 mv "$tmpfile" "$infile" <<
92 } <<
93 <<
94 txt_delete() { <<
95 local text="$1" <<
96 local infile="$2" <<
97 local tmpfile="$infile.swp" <<
98 <<
99 sed -e "/$text/d" "$infile" >"$tmpfile <<
100 # replace original file with the edite <<
101 mv "$tmpfile" "$infile" <<
102 } <<
103 <<
104 set_var() { 63 set_var() {
105 local name=$1 new=$2 before=$3 64 local name=$1 new=$2 before=$3
106 65
107 name_re="^($name=|# $name is not set)" 66 name_re="^($name=|# $name is not set)"
108 before_re="^($before=|# $before is not 67 before_re="^($before=|# $before is not set)"
109 if test -n "$before" && grep -Eq "$bef 68 if test -n "$before" && grep -Eq "$before_re" "$FN"; then
110 txt_append "^$before=" "$new" !! 69 sed -ri "/$before_re/a $new" "$FN"
111 txt_append "^# $before is not <<
112 elif grep -Eq "$name_re" "$FN"; then 70 elif grep -Eq "$name_re" "$FN"; then
113 txt_subst "^$name=.*" "$new" " !! 71 sed -ri "s:$name_re.*:$new:" "$FN"
114 txt_subst "^# $name is not set <<
115 else 72 else
116 echo "$new" >>"$FN" 73 echo "$new" >>"$FN"
117 fi 74 fi
118 } 75 }
119 76
120 undef_var() { 77 undef_var() {
121 local name=$1 78 local name=$1
122 79
123 txt_delete "^$name=" "$FN" !! 80 sed -ri "/^($name=|# $name is not set)/d" "$FN"
124 txt_delete "^# $name is not set" "$FN" <<
125 } 81 }
126 82
127 if [ "$1" = "--file" ]; then 83 if [ "$1" = "--file" ]; then
128 FN="$2" 84 FN="$2"
129 if [ "$FN" = "" ] ; then 85 if [ "$FN" = "" ] ; then
130 usage 86 usage
131 fi 87 fi
132 shift 2 88 shift 2
133 else 89 else
134 FN=.config 90 FN=.config
135 fi 91 fi
136 92
137 if [ "$1" = "" ] ; then 93 if [ "$1" = "" ] ; then
138 usage 94 usage
139 fi 95 fi
140 96
141 MUNGE_CASE=yes 97 MUNGE_CASE=yes
142 while [ "$1" != "" ] ; do 98 while [ "$1" != "" ] ; do
143 CMD="$1" 99 CMD="$1"
144 shift 100 shift
145 case "$CMD" in 101 case "$CMD" in
146 --keep-case|-k) 102 --keep-case|-k)
147 MUNGE_CASE=no 103 MUNGE_CASE=no
148 continue 104 continue
149 ;; 105 ;;
150 --refresh) 106 --refresh)
151 ;; 107 ;;
152 --*-after|-E|-D|-M) 108 --*-after|-E|-D|-M)
153 checkarg "$1" 109 checkarg "$1"
154 A=$ARG 110 A=$ARG
155 checkarg "$2" 111 checkarg "$2"
156 B=$ARG 112 B=$ARG
157 shift 2 113 shift 2
158 ;; 114 ;;
159 -*) 115 -*)
160 checkarg "$1" 116 checkarg "$1"
161 shift 117 shift
162 ;; 118 ;;
163 esac 119 esac
164 case "$CMD" in 120 case "$CMD" in
165 --enable|-e) 121 --enable|-e)
166 set_var "${CONFIG_}$ARG" "${CO 122 set_var "${CONFIG_}$ARG" "${CONFIG_}$ARG=y"
167 ;; 123 ;;
168 124
169 --disable|-d) 125 --disable|-d)
170 set_var "${CONFIG_}$ARG" "# ${ 126 set_var "${CONFIG_}$ARG" "# ${CONFIG_}$ARG is not set"
171 ;; 127 ;;
172 128
173 --module|-m) 129 --module|-m)
174 set_var "${CONFIG_}$ARG" "${CO 130 set_var "${CONFIG_}$ARG" "${CONFIG_}$ARG=m"
175 ;; 131 ;;
176 132
177 --set-str) 133 --set-str)
178 # sed swallows one level of es 134 # sed swallows one level of escaping, so we need double-escaping
179 set_var "${CONFIG_}$ARG" "${CO 135 set_var "${CONFIG_}$ARG" "${CONFIG_}$ARG=\"${1//\"/\\\\\"}\""
180 shift 136 shift
181 ;; 137 ;;
182 138
183 --set-val) 139 --set-val)
184 set_var "${CONFIG_}$ARG" "${CO 140 set_var "${CONFIG_}$ARG" "${CONFIG_}$ARG=$1"
185 shift 141 shift
186 ;; 142 ;;
187 --undefine|-u) 143 --undefine|-u)
188 undef_var "${CONFIG_}$ARG" 144 undef_var "${CONFIG_}$ARG"
189 ;; 145 ;;
190 146
191 --state|-s) 147 --state|-s)
192 if grep -q "# ${CONFIG_}$ARG i 148 if grep -q "# ${CONFIG_}$ARG is not set" $FN ; then
193 echo n 149 echo n
194 else 150 else
195 V="$(grep "^${CONFIG_} 151 V="$(grep "^${CONFIG_}$ARG=" $FN)"
196 if [ $? != 0 ] ; then 152 if [ $? != 0 ] ; then
197 echo undef 153 echo undef
198 else 154 else
199 V="${V/#${CONF 155 V="${V/#${CONFIG_}$ARG=/}"
200 V="${V/#\"/}" 156 V="${V/#\"/}"
201 V="${V/%\"/}" 157 V="${V/%\"/}"
202 V="${V//\\\"/\ 158 V="${V//\\\"/\"}"
203 echo "${V}" 159 echo "${V}"
204 fi 160 fi
205 fi 161 fi
206 ;; 162 ;;
207 163
208 --enable-after|-E) 164 --enable-after|-E)
209 set_var "${CONFIG_}$B" "${CONF 165 set_var "${CONFIG_}$B" "${CONFIG_}$B=y" "${CONFIG_}$A"
210 ;; 166 ;;
211 167
212 --disable-after|-D) 168 --disable-after|-D)
213 set_var "${CONFIG_}$B" "# ${CO 169 set_var "${CONFIG_}$B" "# ${CONFIG_}$B is not set" "${CONFIG_}$A"
214 ;; 170 ;;
215 171
216 --module-after|-M) 172 --module-after|-M)
217 set_var "${CONFIG_}$B" "${CONF 173 set_var "${CONFIG_}$B" "${CONFIG_}$B=m" "${CONFIG_}$A"
218 ;; 174 ;;
219 175
220 # undocumented because it ignores --fi 176 # undocumented because it ignores --file (fixme)
221 --refresh) 177 --refresh)
222 yes "" | make oldconfig 178 yes "" | make oldconfig
223 ;; 179 ;;
224 180
225 *) 181 *)
226 echo "bad command: $CMD" >&2 <<
227 usage 182 usage
228 ;; 183 ;;
229 esac 184 esac
230 done 185 done
>> 186
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