# functions for parsing and generating json
_json_get_var() {
- local ___dest="$1"
- local ___var="$2"
- eval "$___dest=\"\$${JSON_PREFIX}$___var\""
+ # dest=$1
+ # var=$2
+ eval "$1=\"\$${JSON_PREFIX}$2\""
}
_json_set_var() {
- local ___var="$1"
+ # var=$1
local ___val="$2"
- eval "${JSON_PREFIX}$___var=\"\$___val\""
+ eval "${JSON_PREFIX}$1=\"\$___val\""
}
__jshn_raw_append() {
- local var="$1"
+ # var=$1
local value="$2"
local sep="${3:- }"
- eval "export -- \"$var=\${$var:+\${$var}\${value:+\$sep}}\$value\""
+ eval "export -- \"$1=\${$1:+\${$1}\${value:+\$sep}}\$value\""
}
-
_jshn_append() {
- local __var="$1"
- local __value="$2"
- local __sep="${3:- }"
- local __old_val
-
- _json_get_var __old_val "$__var"
- __value="${__old_val:+$__old_val$__sep}$__value"
- _json_set_var "$__var" "$__value"
-}
-
-_json_export() {
- local __var="${JSON_PREFIX}$1"
- local __val="$2"
-
- export -- "$__var=$__val"
-}
-
-_json_add_key() {
- local table="$1"
- local var="$2"
- _jshn_append "KEYS_${table}" "$var"
+ # var=$1
+ local _a_value="$2"
+ eval "${JSON_PREFIX}$1=\"\${${JSON_PREFIX}$1} \$_a_value\""
}
_get_var() {
- local __dest="$1"
- local __var="$2"
- eval "$__dest=\"\$$__var\""
+ # var=$1
+ # value=$2
+ eval "$1=\"\$$2\""
}
_set_var() {
- local __var="$1"
+ # var=$1
local __val="$2"
- eval "$__var=\"\$__val\""
+ eval "$1=\"\$__val\""
}
_json_inc() {
- local _var="$1"
- local _dest="$2"
- local _seq
-
- _json_get_var _seq "$_var"
- _seq="$((${_seq:-0} + 1))"
- _json_set_var "$_var" "$_seq"
- [ -n "$_dest" ] && _set_var "$_dest" "$_seq"
+ # var=$1
+ # dest=$2
+
+ eval "${JSON_PREFIX}$1=\$(( \${${JSON_PREFIX}$1:-0} + 1))${2:+; $2=\"\$${JSON_PREFIX}$1\"}"
}
_json_add_generic() {
- local type="$1"
- local var="$2"
- local val="$3"
- local cur="$4"
-
- [ -n "$cur" ] || _json_get_var cur JSON_CUR
-
- if [ "${cur%%[0-9]*}" = "JSON_ARRAY" ]; then
- _json_inc "SEQ_$cur" var
+ # type=$1
+ # name=$2
+ # value=$3
+ # cur=$4
+
+ local var
+ if [ "${4%%[0-9]*}" = "JSON_ARRAY" ]; then
+ _json_inc "SEQ_$4" var
else
- local name="${var//[^a-zA-Z0-9_]/_}"
- [[ "$name" == "$var" ]] || _json_export "NAME_${cur}_${name}" "$var"
+ local name="${2//[^a-zA-Z0-9_]/_}"
+ [[ "$name" == "$2" ]] || export -- "${JSON_PREFIX}NAME_${4}_${name}=$2"
var="$name"
fi
- _json_export "${cur}_$var" "$val"
- _json_export "TYPE_${cur}_$var" "$type"
- _jshn_append "JSON_UNSET" "${cur}_$var"
- _json_add_key "$cur" "$var"
+ local cur_var=
+ export -- \
+ "${JSON_PREFIX}${4}_$var=$3" \
+ "${JSON_PREFIX}TYPE_${4}_$var=$1"
+ _jshn_append "JSON_UNSET" "${4}_$var"
+ _jshn_append "KEYS_$4" "$var"
}
_json_add_table() {
- local name="$1"
- local type="$2"
- local itype="$3"
- local cur new_cur
- local seq
+ # name=$1
+ # type=$2
+ # itype=$3
+ local cur seq
_json_get_var cur JSON_CUR
_json_inc JSON_SEQ seq
- local table="JSON_$itype$seq"
+ local table="JSON_$3$seq"
_json_set_var "UP_$table" "$cur"
- _json_export "KEYS_$table" ""
- [ "$itype" = "ARRAY" ] && _json_set_var "SEQ_$table" ""
+ export -- "${JSON_PREFIX}KEYS_$table="
+ unset "${JSON_PREFIX}SEQ_$table"
_json_set_var JSON_CUR "$table"
_jshn_append "JSON_UNSET" "$table"
- _json_get_var new_cur JSON_CUR
- _json_add_generic "$type" "$1" "$new_cur" "$cur"
+ _json_add_generic "$2" "$1" "$table" "$cur"
}
_json_close_table() {
- local _s_cur _s_new
+ local _s_cur
_json_get_var _s_cur JSON_CUR
- _json_get_var _s_new "UP_$_s_cur"
- _json_set_var JSON_CUR "$_s_new"
+ _json_get_var "${JSON_PREFIX}JSON_CUR" "UP_$_s_cur"
}
json_set_namespace() {
export -- \
${JSON_PREFIX}JSON_SEQ=0 \
${JSON_PREFIX}JSON_CUR="JSON_VAR" \
- ${JSON_PREFIX}JSON_UNSET="" \
${JSON_PREFIX}KEYS_JSON_VAR= \
${JSON_PREFIX}TYPE_JSON_VAR=
}
}
json_add_string() {
- _json_add_generic string "$1" "$2"
+ local cur
+ _json_get_var cur JSON_CUR
+ _json_add_generic string "$1" "$2" "$cur"
}
json_add_int() {
- _json_add_generic int "$1" "$2"
+ local cur
+ _json_get_var cur JSON_CUR
+ _json_add_generic int "$1" "$2" "$cur"
}
json_add_boolean() {
- _json_add_generic boolean "$1" "$2"
+ local cur
+ _json_get_var cur JSON_CUR
+ _json_add_generic boolean "$1" "$2" "$cur"
}
json_add_double() {
- _json_add_generic double "$1" "$2"
+ local cur
+ _json_get_var cur JSON_CUR
+ _json_add_generic double "$1" "$2" "$cur"
}
# functions read access to json variables
json_get_values() {
local _v_dest="$1"
local _v_keys _v_val _select=
+ local _json_no_warning=1
unset "$_v_dest"
[ -n "$2" ] && {
- json_select "$2"
+ json_select "$2" || return 1
_select=1
}
_json_get_var __cur JSON_CUR
local __var="${JSON_PREFIX}${__cur}_${2//[^a-zA-Z0-9_]/_}"
- eval "export -- \"$__dest=\${$__var}\"; [ -n \"\${$__var+x}\" ]"
+ eval "export -- \"$__dest=\${$__var:-$3}\"; [ -n \"\${$__var+x}\${3+x}\" ]"
}
json_get_vars() {
while [ "$#" -gt 0 ]; do
local _var="$1"; shift
- json_get_var "$_var" "$_var"
+ if [ "$_var" != "${_var#*:}" ]; then
+ json_get_var "${_var%%:*}" "${_var%%:*}" "${_var#*:}"
+ else
+ json_get_var "$_var" "$_var"
+ fi
done
}
_json_set_var JSON_CUR "$cur"
;;
*)
- echo "WARNING: Variable '$target' does not exist or is not an array/object"
+ [ -n "$_json_no_warning" ] || \
+ echo "WARNING: Variable '$target' does not exist or is not an array/object"
return 1
;;
esac
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