# functions for parsing and generating json
-append() {
+jshn_append() {
local var="$1"
local value="$2"
local sep="${3:- }"
- eval "export ${NO_EXPORT:+-n} -- \"$var=\${$var:+\${$var}\${value:+\$sep}}\$value\""
+ eval "export -- \"$var=\${$var:+\${$var}\${value:+\$sep}}\$value\""
}
json_init() {
[ -n "$JSON_UNSET" ] && eval "unset $JSON_UNSET"
- export -- JSON_SEQ=0 JSON_STACK= JSON_CUR="JSON_VAR" JSON_UNSET=
+ export -- JSON_SEQ=0 JSON_STACK= JSON_CUR="JSON_VAR" JSON_UNSET="" KEYS_JSON_VAR= TYPE_JSON_VAR=
}
json_add_generic() {
local val="$3"
local cur="${4:-$JSON_CUR}"
- export ${NO_EXPORT:+-n} -- "${cur}_$var=$val"
- export ${NO_EXPORT:+-n} -- "TYPE_${cur}_$var=$type"
- append JSON_UNSET "${cur}_$var TYPE_${cur}_$var"
- append "KEYS_${cur}" "$var"
+ if [ "${cur%%[0-9]*}" = "JSON_ARRAY" ]; then
+ eval "local aseq=\"\${SEQ_$cur}\""
+ var=$(( ${aseq:-0} + 1 ))
+ export -- "SEQ_$cur=$var"
+ else
+ local name="$(echo -n "$var" | tr -C '[a-zA-Z0-9_]' _)"
+ [[ "$name" == "$var" ]] || export -- "NAME_${cur}_${name}=$var"
+ var="$name"
+ fi
+
+ export -- "${cur}_$var=$val"
+ export -- "TYPE_${cur}_$var=$type"
+ jshn_append JSON_UNSET "${cur}_$var TYPE_${cur}_$var"
+ jshn_append "KEYS_${cur}" "$var"
}
json_add_table() {
+ local TYPE="$1"
JSON_SEQ=$(($JSON_SEQ + 1))
- append JSON_STACK "$JSON_CUR"
- local table="JSON_TABLE$JSON_SEQ"
- export ${NO_EXPORT:+-n} -- "UP_$table=$JSON_CUR"
+ jshn_append JSON_STACK "$JSON_CUR"
+ local table="JSON_$TYPE$JSON_SEQ"
+ export -- "UP_$table=$JSON_CUR"
+ export -- "KEYS_$table="
+ jshn_append JSON_UNSET "KEYS_$table UP_$table"
+ [ "$TYPE" = "ARRAY" ] && jshn_append JSON_UNSET "SEQ_$table"
JSON_CUR="$table"
}
json_add_object() {
local cur="$JSON_CUR"
- json_add_table
+ json_add_table TABLE
json_add_generic object "$1" "$JSON_CUR" "$cur"
}
json_close_object() {
local oldstack="$JSON_STACK"
- export "KEYS_${JSON_CUR}"
JSON_CUR="${JSON_STACK##* }"
JSON_STACK="${JSON_STACK% *}"
[[ "$oldstack" == "$JSON_STACK" ]] && JSON_STACK=
json_add_array() {
local cur="$JSON_CUR"
- json_add_table
+ json_add_table ARRAY
json_add_generic array "$1" "$JSON_CUR" "$cur"
}
}
json_dump() {
- jshn -w
+ jshn "$@" -w
}
json_get_type() {
local dest="$1"
local var="$2"
- eval "export ${NO_EXPORT:+-n} -- \"$dest=\${TYPE_${JSON_CUR}_$var}\""
+ eval "export -- \"$dest=\${TYPE_${JSON_CUR}_$var}\""
}
json_get_var() {
local dest="$1"
- local var="$2"
- eval "export ${NO_EXPORT:+-n} -- \"$dest=\${${JSON_CUR}_$var}\""
+ local var="$(echo -n "$2" | tr -C '[a-zA-Z0-9_]' _)"
+ eval "export -- \"$dest=\${${JSON_CUR}_$var}\""
+}
+
+json_get_vars() {
+ while [ "$#" -gt 0 ]; do
+ local _var="$1"; shift
+ json_get_var "$_var" "$_var"
+ done
}
json_select() {