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1 | #!/bin/bash |
2 | # Manipulate options in a .config file from the command line |
3 | |
4 | myname=${0##*/} |
5 | |
6 | # If no prefix forced, use the default CONFIG_ |
7 | CONFIG_="${CONFIG_-CONFIG_}" |
8 | |
9 | usage() { |
10 | cat >&2 <<EOL |
11 | Manipulate options in a .config file from the command line. |
12 | Usage: |
13 | $myname options command ... |
14 | commands: |
15 | --enable|-e option Enable option |
16 | --disable|-d option Disable option |
17 | --module|-m option Turn option into a module |
18 | --set-str option string |
19 | Set option to "string" |
20 | --set-val option value |
21 | Set option to value |
22 | --undefine|-u option Undefine option |
23 | --state|-s option Print state of option (n,y,m,undef) |
24 | |
25 | --enable-after|-E beforeopt option |
26 | Enable option directly after other option |
27 | --disable-after|-D beforeopt option |
28 | Disable option directly after other option |
29 | --module-after|-M beforeopt option |
30 | Turn option into module directly after other option |
31 | |
32 | commands can be repeated multiple times |
33 | |
34 | options: |
35 | --file config-file .config file to change (default .config) |
36 | --keep-case|-k Keep next symbols' case (dont' upper-case it) |
37 | |
38 | $myname doesn't check the validity of the .config file. This is done at next |
39 | make time. |
40 | |
41 | By default, $myname will upper-case the given symbol. Use --keep-case to keep |
42 | the case of all following symbols unchanged. |
43 | |
44 | $myname uses 'CONFIG_' as the default symbol prefix. Set the environment |
45 | variable CONFIG_ to the prefix to use. Eg.: CONFIG_="FOO_" $myname ... |
46 | EOL |
47 | exit 1 |
48 | } |
49 | |
50 | checkarg() { |
51 | ARG="$1" |
52 | if [ "$ARG" = "" ] ; then |
53 | usage |
54 | fi |
55 | case "$ARG" in |
56 | ${CONFIG_}*) |
57 | ARG="${ARG/${CONFIG_}/}" |
58 | ;; |
59 | esac |
60 | if [ "$MUNGE_CASE" = "yes" ] ; then |
61 | ARG="`echo $ARG | tr a-z A-Z`" |
62 | fi |
63 | } |
64 | |
65 | txt_append() { |
66 | local anchor="$1" |
67 | local insert="$2" |
68 | local infile="$3" |
69 | local tmpfile="$infile.swp" |
70 | |
71 | # sed append cmd: 'a\' + newline + text + newline |
72 | cmd="$(printf "a\\%b$insert" "\n")" |
73 | |
74 | sed -e "/$anchor/$cmd" "$infile" >"$tmpfile" |
75 | # replace original file with the edited one |
76 | mv "$tmpfile" "$infile" |
77 | } |
78 | |
79 | txt_subst() { |
80 | local before="$1" |
81 | local after="$2" |
82 | local infile="$3" |
83 | local tmpfile="$infile.swp" |
84 | |
85 | sed -e "s:$before:$after:" "$infile" >"$tmpfile" |
86 | # replace original file with the edited one |
87 | mv "$tmpfile" "$infile" |
88 | } |
89 | |
90 | txt_delete() { |
91 | local text="$1" |
92 | local infile="$2" |
93 | local tmpfile="$infile.swp" |
94 | |
95 | sed -e "/$text/d" "$infile" >"$tmpfile" |
96 | # replace original file with the edited one |
97 | mv "$tmpfile" "$infile" |
98 | } |
99 | |
100 | set_var() { |
101 | local name=$1 new=$2 before=$3 |
102 | |
103 | name_re="^($name=|# $name is not set)" |
104 | before_re="^($before=|# $before is not set)" |
105 | if test -n "$before" && grep -Eq "$before_re" "$FN"; then |
106 | txt_append "^$before=" "$new" "$FN" |
107 | txt_append "^# $before is not set" "$new" "$FN" |
108 | elif grep -Eq "$name_re" "$FN"; then |
109 | txt_subst "^$name=.*" "$new" "$FN" |
110 | txt_subst "^# $name is not set" "$new" "$FN" |
111 | else |
112 | echo "$new" >>"$FN" |
113 | fi |
114 | } |
115 | |
116 | undef_var() { |
117 | local name=$1 |
118 | |
119 | txt_delete "^$name=" "$FN" |
120 | txt_delete "^# $name is not set" "$FN" |
121 | } |
122 | |
123 | if [ "$1" = "--file" ]; then |
124 | FN="$2" |
125 | if [ "$FN" = "" ] ; then |
126 | usage |
127 | fi |
128 | shift 2 |
129 | else |
130 | FN=.config |
131 | fi |
132 | |
133 | if [ "$1" = "" ] ; then |
134 | usage |
135 | fi |
136 | |
137 | MUNGE_CASE=yes |
138 | while [ "$1" != "" ] ; do |
139 | CMD="$1" |
140 | shift |
141 | case "$CMD" in |
142 | --keep-case|-k) |
143 | MUNGE_CASE=no |
144 | continue |
145 | ;; |
146 | --refresh) |
147 | ;; |
148 | --*-after|-E|-D|-M) |
149 | checkarg "$1" |
150 | A=$ARG |
151 | checkarg "$2" |
152 | B=$ARG |
153 | shift 2 |
154 | ;; |
155 | -*) |
156 | checkarg "$1" |
157 | shift |
158 | ;; |
159 | esac |
160 | case "$CMD" in |
161 | --enable|-e) |
162 | set_var "${CONFIG_}$ARG" "${CONFIG_}$ARG=y" |
163 | ;; |
164 | |
165 | --disable|-d) |
166 | set_var "${CONFIG_}$ARG" "# ${CONFIG_}$ARG is not set" |
167 | ;; |
168 | |
169 | --module|-m) |
170 | set_var "${CONFIG_}$ARG" "${CONFIG_}$ARG=m" |
171 | ;; |
172 | |
173 | --set-str) |
174 | # sed swallows one level of escaping, so we need double-escaping |
175 | set_var "${CONFIG_}$ARG" "${CONFIG_}$ARG=\"${1//\"/\\\\\"}\"" |
176 | shift |
177 | ;; |
178 | |
179 | --set-val) |
180 | set_var "${CONFIG_}$ARG" "${CONFIG_}$ARG=$1" |
181 | shift |
182 | ;; |
183 | --undefine|-u) |
184 | undef_var "${CONFIG_}$ARG" |
185 | ;; |
186 | |
187 | --state|-s) |
188 | if grep -q "# ${CONFIG_}$ARG is not set" $FN ; then |
189 | echo n |
190 | else |
191 | V="$(grep "^${CONFIG_}$ARG=" $FN)" |
192 | if [ $? != 0 ] ; then |
193 | echo undef |
194 | else |
195 | V="${V/#${CONFIG_}$ARG=/}" |
196 | V="${V/#\"/}" |
197 | V="${V/%\"/}" |
198 | V="${V//\\\"/\"}" |
199 | echo "${V}" |
200 | fi |
201 | fi |
202 | ;; |
203 | |
204 | --enable-after|-E) |
205 | set_var "${CONFIG_}$B" "${CONFIG_}$B=y" "${CONFIG_}$A" |
206 | ;; |
207 | |
208 | --disable-after|-D) |
209 | set_var "${CONFIG_}$B" "# ${CONFIG_}$B is not set" "${CONFIG_}$A" |
210 | ;; |
211 | |
212 | --module-after|-M) |
213 | set_var "${CONFIG_}$B" "${CONFIG_}$B=m" "${CONFIG_}$A" |
214 | ;; |
215 | |
216 | # undocumented because it ignores --file (fixme) |
217 | --refresh) |
218 | yes "" | make oldconfig |
219 | ;; |
220 | |
221 | *) |
222 | usage |
223 | ;; |
224 | esac |
225 | done |
226 | |
227 |
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Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9