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add new /bin/uci script and api for manipulating buildroot-ng config files

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git-svn-id: svn://svn.openwrt.org/openwrt/branches/buildroot-ng/openwrt@4982 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
nbd 2006-10-09 05:59:26 +00:00
parent 6dfd012e68
commit 2f1f57762e
4 changed files with 478 additions and 1 deletions
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159
package/base-files/default/bin/uci Executable file
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@ -0,0 +1,159 @@
#!/bin/sh
# Shell script for interacting with config files
#
# Copyright (C) 2006 by Fokus Fraunhofer <carsten.tittel@fokus.fraumhofer.de>
# Copyright (C) 2006 by Felix Fietkau <nbd@openwrt.org>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
. /etc/functions.sh
include /lib/config
do_get() {
[ $# -ne 3 ] && {
uci_usage get
exit 1
}
local PACKAGE="$1"
local CONFIG="$2"
local OPTION="$3"
uci_load "$PACAKGE"
config_get "$CONFIG" "$OPTION"
}
do_set() {
[ $# -ne 4 ] && {
uci_usage set
exit 1
}
uci_set "$@"
}
do_add() {
[ $# -ne 3 ] && {
uci_usage add
exit 1
}
uci_add "$@"
}
do_rename() {
[ $# -ne 3 ] && {
uci_usage rename
exit 1
}
uci_rename "$@"
}
do_remove() {
[ $# -ne 3 -a $# -ne 2 ] && {
uci_usage rename
exit 1
}
uci_remove "$@"
}
do_commit() {
[ $# -ne 1 ] && {
uci_usage commit
exit 1
}
uci_commit "$1"
}
do_show() {
[ $# -gt 2 -o $# -lt 1 ] && {
uci_usage show
exit 1
}
PACKAGE="$1"
CONFIG="$2"
SECTION=""
config_cb() {
if [ -z "$CONFIG" -o "$CONFIG" = "$2" ]; then
append SECTION "$2"
option_cb() {
append "${CONFIG_SECTION}_VARS" "$1"
}
else
option_cb() {
return 0
}
fi
}
uci_load "$PACKAGE"
for section in $SECTION; do
config_get type "$section" TYPE
[ -z "$type" ] && continue
echo "@$section=$type"
eval "VARS=\"\${${section}_VARS}\""
for var in $VARS; do
config_get val "$section" "$var"
[ -n "$val" ] && {
echo "${section}.${var}=${val}"
config_set "$section" "$var" ""
}
done
config_set "$section" TYPE ""
done
}
uci_usage() {
case "$1" in
show) echo "$0 show <package> [<config>]";;
get) echo "$0 get <package> <config> <option>";;
set) echo "$0 set <package> <config> <option> <value>";;
add) echo "$0 add <package> <type> <config>";;
del) echo "$0 del <package> <config> [<option>]";;
rename) echo "$0 rename <package> <config> <name>";;
commit) echo "$0 commit <package>";;
*)
echo "Syntax: $0 <command> <arguments...>"
echo
uci_usage show
uci_usage get
uci_usage set
uci_usage add
uci_usage del
uci_usage rename
uci_usage commit
echo
exit 1
;;
esac
}
if [ $# -eq 0 ] ; then
uci_usage
exit 0
fi
CMD="$1"
shift
case "$CMD" in
set) do_set "$@";;
add) do_add "$@";;
del) do_remove "$@";;
rename) do_rename "$@";;
get) do_get "$@";;
show) do_show "$@";;
commit) do_commit "$@";;
*) uci_usage;;
esac
exit 0

22
package/base-files/default/etc/functions.sh
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@ -54,6 +54,26 @@ option () {
option_cb "$varname" "$*"
}
config_rename() {
local OLD="$1"
local NEW="$2"
local oldsetting
local newvar
[ -z "$OLD" -o -z "$NEW" ] && return
for oldsetting in `set | grep ^CONFIG_${OLD}_ | \
sed -e 's/\(.*\)=.*$/\1/'` ; do
newvar="CONFIG_${NEW}_${oldsetting##CONFIG_${OLD}_}"
eval "${newvar}=\${$oldsetting}"
unset "$oldsetting"
done
[ "$CONFIG_SECTION" = "$OLD" ] && CONFIG_SECTION="$NEW"
}
config_unset() {
config_set "$1" "$2" ""
}
config_clear() {
[ -z "$CONFIG_SECTION" ] && return
for oldsetting in `set | grep ^CONFIG_${CONFIG_SECTION}_ | \
@ -79,7 +99,7 @@ config_load() {
config_get() {
case "$3" in
"") eval "echo \${CONFIG_${1}_${2}}";;
"") eval "echo \"\${CONFIG_${1}_${2}}\"";;
*) eval "$1=\"\${CONFIG_${2}_${3}}\"";;
esac
}

160
package/base-files/default/lib/config/uci-update.awk Normal file
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@ -0,0 +1,160 @@
# Configuration update functions
#
# Copyright (C) 2006 by Fokus Fraunhofer <carsten.tittel@fokus.fraunhofer.de>
# Copyright (C) 2006 by Felix Fietkau <nbd@openwrt.org>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
function read_file(filename, result) {
while ((getline <filename) == 1) {
result = result $0 "\n"
}
gsub(/\n*$/, "", result)
return result
}
function cmd2option(str, tmp) {
if (match(str,"=")!=0) {
res = "\toption " substr(str,1,RSTART-1) "\t'" substr(str,RSTART+1) "'"
} else {
res= ""
}
return res
}
function cmd2config(atype, aname) {
return "config \"" atype "\" \"" aname "\""
}
function update_config(cfg, update, \
lines, line, l, n, i, i2, section, scnt, remove, tmp, aidx, rest) {
scnt = 1
linecnt=split(cfg "\n", lines, "\n")
cfg = ""
for (n = 1; n < linecnt; n++) {
# stupid parser for quoted arguments (e.g. for the type string).
# not to be used to gather variable values (backslash escaping doesn't work)
line = lines[n]
gsub(/^[ \t]*/, "", line)
gsub(/#.*$/, "", line)
i2 = 1
delete l
rest = line
while (length(rest)) {
if (match(rest, /[ \t\"]+/)) {
if (RSTART>1) {
l[i2] = substr(rest,1,RSTART-1)
i2++
}
aidx=index(rest,"\"")
if (aidx>=RSTART && aidx<=RSTART+RLENGTH) {
rest=substr(rest,aidx+1)
# find the end of the string
match(rest,/\"/)
l[i2]=substr(rest,1,RSTART-1)
i2++
}
rest=substr(rest,RSTART+RLENGTH)
} else {
l[i2] = rest
i2++
rest = ""
}
}
line = lines[n]
# when a command wants to set a config value for the current
# section and a blank line is encountered before an option with
# the same name, insert it here to maintain some coherency between
# manually and automatically created option lines
# if an option with the same name appears after this point, simply
# ignore it, because it is already set.
if ((section != "") && (l[1] != "option")) {
if (line ~ /^[ \t]*$/) {
if (update ~ "^" section "\\.") {
gsub("^" section ".", "", update)
cfg = cfg cmd2option(update) "\n"
gsub(/=.*$/, "", update)
update = "-" section "." update
}
}
}
if (l[1] == "config") {
# look for all unset values
if (section != "") {
flag=0
if (update ~ "^" section "\\.") {
flag=1
gsub("^" section ".", "", update)
cfg = cfg cmd2option(update) "\n"
update = "-" section "." update
}
if (flag!=0) cfg = cfg "\n"
}
remove = ""
section = l[3]
if (!length(section)) {
section = "cfg" scnt
}
scnt++
if (update == "-" section) {
remove = "section"
update = ""
} else if (update ~ "^@" section "=") {
update = ""
} else if (update ~ "^&" section "=") {
gsub("^&" section "=", "", update)
line = cmd2config(l[2],update)
update = ""
}
}
if (remove == "option") remove = ""
if (l[1] == "option") {
if (update ~ "^-" section "\\." l[2] "$") remove = "option"
# if a supplied config value already exists, replace the whole line
if (match(update, "^" section "." l[2] "=")) {
gsub("^" section ".", "", update)
line = cmd2option(update)
update = ""
}
}
if (remove == "") cfg = cfg line "\n"
}
# any new options for the last section??
if (section != "") {
if (update ~ "^" section "\\.") {
gsub("^" section ".", "", update)
cfg = cfg cmd2option(update) "\n"
update = "-" section "." update
}
}
if (update ~ "^@") {
# new section
section = stype = substr(update,2)
gsub(/=.*$/,"",section)
gsub(/^.*=/,"",stype)
cfg = cfg "\nconfig \"" stype "\" \"" section "\"\n"
}
return cfg
}

138
package/base-files/default/lib/config/uci.sh Executable file
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@ -0,0 +1,138 @@
#!/bin/sh
# Shell script defining macros for manipulating config files
#
# Copyright (C) 2006 by Fokus Fraunhofer <carsten.tittel@fokus.fraumhofer.de>
# Copyright (C) 2006 by Felix Fietkau <nbd@openwrt.org>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
uci_load() {
config_load "$PACKAGE"
local PACKAGE_BASE="$(basename "$PACKAGE")"
[ -f "/tmp/.uci/${PACKAGE_BASE}" ] && {
. "/tmp/.uci/${PACKAGE_BASE}"
config_cb
}
}
uci_do_update() {
local FILENAME="$1"
local UPDATE="$2"
awk -f /lib/config/uci-update.awk -f - <<EOF
BEGIN {
config = read_file("$FILENAME")
$UPDATE
print config
}
EOF
}
uci_add_update() {
local PACKAGE="$1"
local UPDATE="$2"
local PACKAGE_BASE="$(basename "$PACKAGE")"
# FIXME: add locking?
mkdir -p "/tmp/.uci"
echo "$UPDATE" >> "/tmp/.uci/${PACKAGE_BASE}"
}
uci_set() {
local PACKAGE="$1"
local CONFIG="$2"
local OPTION="$3"
local VALUE="$4"
( # spawn a subshell so you don't mess up the current environment
uci_load "$PACKAGE"
config_get type "$CONFIG" TYPE
[ -z "$type" ]
) || uci_add_update "$PACKAGE" "CONFIG_SECTION='$CONFIG'${N}option '$OPTION' '$VALUE'"
}
uci_add() {
local PACKAGE="$1"
local TYPE="$2"
local CONFIG="$3"
uci_add_update "$PACKAGE" "config '$TYPE' '$CONFIG'"
}
uci_rename() {
local PACKAGE="$1"
local CONFIG="$2"
local VALUE="$3"
uci_add_update "$PACKAGE" "config_rename '$CONFIG' '$VALUE'"
}
uci_remove() {
local PACKAGE="$1"
local CONFIG="$2"
local OPTION="$3"
if [ -z "$OPTION" ]; then
uci_add_update "$PACKAGE" "config_clear '$CONFIG'"
else
uci_add_update "$PACKAGE" "config_unset '$CONFIG' '$OPTION'"
fi
}
uci_commit() {
local PACKAGE="$1"
local PACKAGE_BASE="$(basename "$PACKAGE")"
mkdir -p /tmp/.uci
lock "/tmp/.uci/$PACKAGE_BASE.lock"
[ -f "/tmp/.uci/$PACKAGE_BASE" ] && (
updatestr=""
# replace handlers
config() {
append updatestr "config = update_config(config, \"@$2=$1\")" "$N"
}
option() {
append updatestr "config = update_config(config, \"$CONFIG_SECTION.$1=$2\")" "$N"
}
config_rename() {
append updatestr "config = update_config(config, \"&$1=$2\")" "$N"
}
config_unset() {
append updatestr "config = update_config(config, \"-$1.$2\")" "$N"
}
config_clear() {
append updatestr "config = update_config(config, \"-$1\")" "$N"
}
. "/tmp/.uci/$PACKAGE_BASE"
# completely disable handlers so that they don't get in the way
config() {
return 0
}
option() {
return 0
}
config_load "$PACKAGE" || CONFIG_FILENAME="$ROOT/etc/config/$PACKAGE_BASE"
uci_do_update "$CONFIG_FILENAME" "$updatestr" > "/tmp/.uci/$PACKAGE_BASE.new" && {
mv -f "/tmp/.uci/$PACKAGE_BASE.new" "$CONFIG_FILENAME" && \
rm -f "/tmp/.uci/$PACKAGE_BASE"
}
)
lock -u "/tmp/.uci/$PACKAGE_BASE.lock"
}