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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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 | #!/bin/bash # Manipulate options in a .config file from the command line # If no prefix forced, use the default CONFIG_ CONFIG_="${CONFIG_-CONFIG_}" usage() { cat >&2 <<EOL Manipulate options in a .config file from the command line. Usage: config options command ... commands: --enable|-e option Enable option --disable|-d option Disable option --module|-m option Turn option into a module --set-str option string Set option to "string" --set-val option value Set option to value --undefine|-u option Undefine option --state|-s option Print state of option (n,y,m,undef) --enable-after|-E beforeopt option Enable option directly after other option --disable-after|-D beforeopt option Disable option directly after other option --module-after|-M beforeopt option Turn option into module directly after other option commands can be repeated multiple times options: --file config-file .config file to change (default .config) --keep-case|-k Keep next symbols' case (dont' upper-case it) config doesn't check the validity of the .config file. This is done at next make time. By default, config will upper-case the given symbol. Use --keep-case to keep the case of all following symbols unchanged. config uses 'CONFIG_' as the default symbol prefix. Set the environment variable CONFIG_ to the prefix to use. Eg.: CONFIG_="FOO_" config ... EOL exit 1 } checkarg() { ARG="$1" if [ "$ARG" = "" ] ; then usage fi case "$ARG" in ${CONFIG_}*) ARG="${ARG/${CONFIG_}/}" ;; esac if [ "$MUNGE_CASE" = "yes" ] ; then ARG="`echo $ARG | tr a-z A-Z`" fi } set_var() { local name=$1 new=$2 before=$3 name_re="^($name=|# $name is not set)" before_re="^($before=|# $before is not set)" if test -n "$before" && grep -Eq "$before_re" "$FN"; then sed -ri "/$before_re/a $new" "$FN" elif grep -Eq "$name_re" "$FN"; then sed -ri "s:$name_re.*:$new:" "$FN" else echo "$new" >>"$FN" fi } undef_var() { local name=$1 sed -ri "/^($name=|# $name is not set)/d" "$FN" } if [ "$1" = "--file" ]; then FN="$2" if [ "$FN" = "" ] ; then usage fi shift 2 else FN=.config fi if [ "$1" = "" ] ; then usage fi MUNGE_CASE=yes while [ "$1" != "" ] ; do CMD="$1" shift case "$CMD" in --keep-case|-k) MUNGE_CASE=no continue ;; --refresh) ;; --*-after|-E|-D|-M) checkarg "$1" A=$ARG checkarg "$2" B=$ARG shift 2 ;; -*) checkarg "$1" shift ;; esac case "$CMD" in --enable|-e) set_var "${CONFIG_}$ARG" "${CONFIG_}$ARG=y" ;; --disable|-d) set_var "${CONFIG_}$ARG" "# ${CONFIG_}$ARG is not set" ;; --module|-m) set_var "${CONFIG_}$ARG" "${CONFIG_}$ARG=m" ;; --set-str) # sed swallows one level of escaping, so we need double-escaping set_var "${CONFIG_}$ARG" "${CONFIG_}$ARG=\"${1//\"/\\\\\"}\"" shift ;; --set-val) set_var "${CONFIG_}$ARG" "${CONFIG_}$ARG=$1" shift ;; --undefine|-u) undef_var "${CONFIG_}$ARG" ;; --state|-s) if grep -q "# ${CONFIG_}$ARG is not set" $FN ; then echo n else V="$(grep "^${CONFIG_}$ARG=" $FN)" if [ $? != 0 ] ; then echo undef else V="${V/#${CONFIG_}$ARG=/}" V="${V/#\"/}" V="${V/%\"/}" V="${V//\\\"/\"}" echo "${V}" fi fi ;; --enable-after|-E) set_var "${CONFIG_}$B" "${CONFIG_}$B=y" "${CONFIG_}$A" ;; --disable-after|-D) set_var "${CONFIG_}$B" "# ${CONFIG_}$B is not set" "${CONFIG_}$A" ;; --module-after|-M) set_var "${CONFIG_}$B" "${CONFIG_}$B=m" "${CONFIG_}$A" ;; # undocumented because it ignores --file (fixme) --refresh) yes "" | make oldconfig ;; *) usage ;; esac done |