1#!/bin/bash 2# Manipulate options in a .config file from the command line 3 4myname=${0##*/} 5 6# If no prefix forced, use the default CONFIG_ 7CONFIG_="${CONFIG_-CONFIG_}" 8 9usage() { 10 cat >&2 <<EOL 11Manipulate options in a .config file from the command line. 12Usage: 13$myname options command ... 14commands: 15 --enable|-e option Enable option 16 --disable|-d option Disable option 17 --module|-m option Turn option into a module 18 --set-str option string 19 Set option to "string" 20 --set-val option value 21 Set option to value 22 --undefine|-u option Undefine option 23 --state|-s option Print state of option (n,y,m,undef) 24 25 --enable-after|-E beforeopt option 26 Enable option directly after other option 27 --disable-after|-D beforeopt option 28 Disable option directly after other option 29 --module-after|-M beforeopt option 30 Turn option into module directly after other option 31 32 commands can be repeated multiple times 33 34options: 35 --file config-file .config file to change (default .config) 36 --keep-case|-k Keep next symbols' case (dont' upper-case it) 37 38$myname doesn't check the validity of the .config file. This is done at next 39make time. 40 41By default, $myname will upper-case the given symbol. Use --keep-case to keep 42the case of all following symbols unchanged. 43 44$myname uses 'CONFIG_' as the default symbol prefix. Set the environment 45variable CONFIG_ to the prefix to use. Eg.: CONFIG_="FOO_" $myname ... 46EOL 47 exit 1 48} 49 50checkarg() { 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 65set_var() { 66 local name=$1 new=$2 before=$3 67 68 name_re="^($name=|# $name is not set)" 69 before_re="^($before=|# $before is not set)" 70 if test -n "$before" && grep -Eq "$before_re" "$FN"; then 71 sed -ri "/$before_re/a $new" "$FN" 72 elif grep -Eq "$name_re" "$FN"; then 73 sed -ri "s:$name_re.*:$new:" "$FN" 74 else 75 echo "$new" >>"$FN" 76 fi 77} 78 79undef_var() { 80 local name=$1 81 82 sed -ri "/^($name=|# $name is not set)/d" "$FN" 83} 84 85if [ "$1" = "--file" ]; then 86 FN="$2" 87 if [ "$FN" = "" ] ; then 88 usage 89 fi 90 shift 2 91else 92 FN=.config 93fi 94 95if [ "$1" = "" ] ; then 96 usage 97fi 98 99MUNGE_CASE=yes 100while [ "$1" != "" ] ; do 101 CMD="$1" 102 shift 103 case "$CMD" in 104 --keep-case|-k) 105 MUNGE_CASE=no 106 continue 107 ;; 108 --refresh) 109 ;; 110 --*-after|-E|-D|-M) 111 checkarg "$1" 112 A=$ARG 113 checkarg "$2" 114 B=$ARG 115 shift 2 116 ;; 117 -*) 118 checkarg "$1" 119 shift 120 ;; 121 esac 122 case "$CMD" in 123 --enable|-e) 124 set_var "${CONFIG_}$ARG" "${CONFIG_}$ARG=y" 125 ;; 126 127 --disable|-d) 128 set_var "${CONFIG_}$ARG" "# ${CONFIG_}$ARG is not set" 129 ;; 130 131 --module|-m) 132 set_var "${CONFIG_}$ARG" "${CONFIG_}$ARG=m" 133 ;; 134 135 --set-str) 136 # sed swallows one level of escaping, so we need double-escaping 137 set_var "${CONFIG_}$ARG" "${CONFIG_}$ARG=\"${1//\"/\\\\\"}\"" 138 shift 139 ;; 140 141 --set-val) 142 set_var "${CONFIG_}$ARG" "${CONFIG_}$ARG=$1" 143 shift 144 ;; 145 --undefine|-u) 146 undef_var "${CONFIG_}$ARG" 147 ;; 148 149 --state|-s) 150 if grep -q "# ${CONFIG_}$ARG is not set" $FN ; then 151 echo n 152 else 153 V="$(grep "^${CONFIG_}$ARG=" $FN)" 154 if [ $? != 0 ] ; then 155 echo undef 156 else 157 V="${V/#${CONFIG_}$ARG=/}" 158 V="${V/#\"/}" 159 V="${V/%\"/}" 160 V="${V//\\\"/\"}" 161 echo "${V}" 162 fi 163 fi 164 ;; 165 166 --enable-after|-E) 167 set_var "${CONFIG_}$B" "${CONFIG_}$B=y" "${CONFIG_}$A" 168 ;; 169 170 --disable-after|-D) 171 set_var "${CONFIG_}$B" "# ${CONFIG_}$B is not set" "${CONFIG_}$A" 172 ;; 173 174 --module-after|-M) 175 set_var "${CONFIG_}$B" "${CONFIG_}$B=m" "${CONFIG_}$A" 176 ;; 177 178 # undocumented because it ignores --file (fixme) 179 --refresh) 180 yes "" | make oldconfig 181 ;; 182 183 *) 184 usage 185 ;; 186 esac 187done 188 189