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1#!/bin/bash
2# Manipulate options in a .config file from the command line
3
4usage() {
5 cat >&2 <<EOL
6Manipulate options in a .config file from the command line.
7Usage:
8config options command ...
9commands:
10 --enable|-e option Enable option
11 --disable|-d option Disable option
1f990cf9 12 --module|-m option Turn option into a module
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13 --set-str option string
14 Set option to "string"
15 --set-val option value
16 Set option to value
1f990cf9 17 --state|-s option Print state of option (n,y,m,undef)
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18
19 --enable-after|-E beforeopt option
20 Enable option directly after other option
21 --disable-after|-D beforeopt option
22 Disable option directly after other option
23 --module-after|-M beforeopt option
24 Turn option into module directly after other option
25
26 commands can be repeated multiple times
27
28options:
29 --file .config file to change (default .config)
30
31config doesn't check the validity of the .config file. This is done at next
32 make time.
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33EOL
34 exit 1
35}
36
37checkarg() {
38 ARG="$1"
39 if [ "$ARG" = "" ] ; then
40 usage
41 fi
42 case "$ARG" in
43 CONFIG_*)
44 ARG="${ARG/CONFIG_/}"
45 ;;
46 esac
47 ARG="`echo $ARG | tr a-z A-Z`"
48}
49
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50set_var() {
51 local name=$1 new=$2 before=$3
52
53 name_re="^($name=|# $name is not set)"
54 before_re="^($before=|# $before is not set)"
55 if test -n "$before" && grep -Eq "$before_re" "$FN"; then
56 sed -ri "/$before_re/a $new" "$FN"
57 elif grep -Eq "$name_re" "$FN"; then
58 sed -ri "s:$name_re.*:$new:" "$FN"
59 else
60 echo "$new" >>"$FN"
61 fi
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62}
63
64if [ "$1" = "--file" ]; then
65 FN="$2"
66 if [ "$FN" = "" ] ; then
67 usage
68 fi
47312d2c 69 shift 2
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70else
71 FN=.config
72fi
73
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74if [ "$1" = "" ] ; then
75 usage
76fi
77
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78while [ "$1" != "" ] ; do
79 CMD="$1"
80 shift
81 case "$CMD" in
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82 --refresh)
83 ;;
84 --*-after)
85 checkarg "$1"
86 A=$ARG
87 checkarg "$2"
88 B=$ARG
89 shift 2
90 ;;
45f53cc9 91 -*)
8e54701e 92 checkarg "$1"
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93 shift
94 ;;
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95 esac
96 case "$CMD" in
97 --enable|-e)
98 set_var "CONFIG_$ARG" "CONFIG_$ARG=y"
99 ;;
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100
101 --disable|-d)
56643222 102 set_var "CONFIG_$ARG" "# CONFIG_$ARG is not set"
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103 ;;
104
105 --module|-m)
56643222 106 set_var "CONFIG_$ARG" "CONFIG_$ARG=m"
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107 ;;
108
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109 --set-str)
110 set_var "CONFIG_$ARG" "CONFIG_$ARG=\"$1\""
111 shift
112 ;;
113
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114 --set-val)
115 set_var "CONFIG_$ARG" "CONFIG_$ARG=$1"
116 shift
117 ;;
118
8e54701e 119 --state|-s)
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120 if grep -q "# CONFIG_$ARG is not set" $FN ; then
121 echo n
122 else
123 V="$(grep "^CONFIG_$ARG=" $FN)"
124 if [ $? != 0 ] ; then
125 echo undef
126 else
127 V="${V/CONFIG_$ARG=/}"
128 V="${V/\"/}"
129 echo "$V"
130 fi
131 fi
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132 ;;
133
134 --enable-after|-E)
56643222 135 set_var "CONFIG_$B" "CONFIG_$B=y" "CONFIG_$A"
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136 ;;
137
138 --disable-after|-D)
56643222 139 set_var "CONFIG_$B" "# CONFIG_$B is not set" "CONFIG_$A"
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140 ;;
141
142 --module-after|-M)
56643222 143 set_var "CONFIG_$B" "CONFIG_$B=m" "CONFIG_$A"
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144 ;;
145
146 # undocumented because it ignores --file (fixme)
147 --refresh)
148 yes "" | make oldconfig
149 ;;
150
151 *)
152 usage
153 ;;
154 esac
155done
156