# 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() {
+ # var=$1
+ local value="$2"
+ local sep="${3:- }"
+
+ eval "export -- \"$1=\${$1:+\${$1}\${value:+\$sep}}\$value\""
}
_jshn_append() {
- local __var="$1"
- local __value="$2"
- local __sep="${3:- }"
+ # var=$1
+ # value=$2
+ # sep=$3
local __old_val
- _json_get_var __old_val "$__var"
- __value="${__old_val:+$__old_val$__sep}$__value"
- _json_set_var "$__var" "$__value"
+ _json_get_var __old_val "$1"
+ _json_set_var "$1" "${__old_val:+$__old_val${3:- }}$2"
}
_json_export() {
- local __var="${JSON_PREFIX}$1"
- local __val="$2"
-
- export -- "$__var=$__val"
- _jshn_append "JSON_UNSET" "$__var"
+ # var=$1
+ # value=$2
+ export -- "${JSON_PREFIX}$1=$2"
}
_json_add_key() {
- local table="$1"
- local var="$2"
- _jshn_append "KEYS_${table}" "$var"
+ # var=$1
+ # value=$2
+ _jshn_append "KEYS_$1" "$2"
}
_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"
-}
-
-_json_stack_push() {
- local new_cur="$1"
- local cur
-
- _json_get_var cur JSON_CUR
- _jshn_append JSON_STACK "$cur"
- _json_set_var JSON_CUR "$new_cur"
+ # var=$1
+ # dest=$2
+ local _seq
+
+ _json_get_var _seq "$1"
+ _seq="$((${_seq:-0} + 1))"
+ _json_set_var "$1" "$_seq"
+ [ -n "$2" ] && _set_var "$2" "$_seq"
}
_json_add_generic() {
- local type="$1"
+ # type=$1
local var="$2"
- local val="$3"
+ # value=$3
local cur="$4"
[ -n "$cur" ] || _json_get_var cur JSON_CUR
var="$name"
fi
- _json_export "${cur}_$var" "$val"
- _json_export "TYPE_${cur}_$var" "$type"
+ local cur_var=
+ _json_export "${cur}_$var" "$3"
+ _json_export "TYPE_${cur}_$var" "$1"
+ _jshn_append "JSON_UNSET" "${cur}_$var"
_json_add_key "$cur" "$var"
}
_json_add_table() {
- local name="$1"
- local type="$2"
- local itype="$3"
- local cur new_cur
+ # name=$1
+ # type=$2
+ # itype=$3
+ local cur new_cur seq
_json_get_var cur JSON_CUR
_json_inc JSON_SEQ seq
- local table="JSON_$itype$seq"
- _json_export "UP_$table" "$cur"
+ local table="JSON_$3$seq"
+ _json_set_var "UP_$table" "$cur"
_json_export "KEYS_$table" ""
- [ "$TYPE" = "ARRAY" ] && _json_export "KEYS_$table" ""
- _json_stack_push "$table"
+ [ "$itype" = "ARRAY" ] && _json_set_var "SEQ_$table" ""
+ _json_set_var JSON_CUR "$table"
+ _jshn_append "JSON_UNSET" "$table"
_json_get_var new_cur JSON_CUR
- _json_add_generic object "$1" "$new_cur" "$cur"
+ _json_add_generic "$2" "$1" "$new_cur" "$cur"
}
_json_close_table() {
- local stack new_stack
+ local _s_cur _s_new
- _json_get_var stack JSON_STACK
- _json_set_var cur "${JSON_STACK##* }"
- new_stack="${stack% *}"
- [[ "$stack" == "$new_stack" ]] && new_stack=
- _json_set_var JSON_STACK "$new_stack"
+ _json_get_var _s_cur JSON_CUR
+ _json_get_var _s_new "UP_$_s_cur"
+ _json_set_var JSON_CUR "$_s_new"
}
json_set_namespace() {
local unset
_json_get_var unset JSON_UNSET
- [ -n "$unset" ] && eval "unset $unset"
+ for tmp in $unset JSON_VAR; do
+ unset \
+ ${JSON_PREFIX}UP_$tmp \
+ ${JSON_PREFIX}KEYS_$tmp \
+ ${JSON_PREFIX}SEQ_$tmp \
+ ${JSON_PREFIX}TYPE_$tmp \
+ ${JSON_PREFIX}NAME_$tmp \
+ ${JSON_PREFIX}$tmp
+ done
unset \
${JSON_PREFIX}JSON_SEQ \
- ${JSON_PREFIX}JSON_STACK \
${JSON_PREFIX}JSON_CUR \
- ${JSON_PREFIX}JSON_UNSET \
- ${JSON_PREFIX}KEYS_JSON_VAR \
- ${JSON_PREFIX}TYPE_JSON_VAR
+ ${JSON_PREFIX}JSON_UNSET
}
json_init() {
json_cleanup
export -- \
${JSON_PREFIX}JSON_SEQ=0 \
- ${JSON_PREFIX}JSON_STACK= \
${JSON_PREFIX}JSON_CUR="JSON_VAR" \
- ${JSON_PREFIX}JSON_UNSET="" \
${JSON_PREFIX}KEYS_JSON_VAR= \
${JSON_PREFIX}TYPE_JSON_VAR=
}
_json_add_generic boolean "$1" "$2"
}
+json_add_double() {
+ _json_add_generic double "$1" "$2"
+}
+
# functions read access to json variables
json_load() {
}
json_get_type() {
- local dest="$1"
- local cur
+ local __dest="$1"
+ local __cur
- _json_get_var cur JSON_CUR
- local var="${JSON_PREFIX}TYPE_${cur}_$2"
- eval "export -- \"$dest=\${$var}\"; [ -n \"\${$var+x}\" ]"
+ _json_get_var __cur JSON_CUR
+ local __var="${JSON_PREFIX}TYPE_${__cur}_${2//[^a-zA-Z0-9_]/_}"
+ eval "export -- \"$__dest=\${$__var}\"; [ -n \"\${$__var+x}\" ]"
+}
+
+json_get_keys() {
+ local __dest="$1"
+ local _tbl_cur
+
+ if [ -n "$2" ]; then
+ json_get_var _tbl_cur "$2"
+ else
+ _json_get_var _tbl_cur JSON_CUR
+ fi
+ local __var="${JSON_PREFIX}KEYS_${_tbl_cur}"
+ eval "export -- \"$__dest=\${$__var}\"; [ -n \"\${$__var+x}\" ]"
+}
+
+json_get_values() {
+ local _v_dest="$1"
+ local _v_keys _v_val _select=
+
+ unset "$_v_dest"
+ [ -n "$2" ] && {
+ json_select "$2"
+ _select=1
+ }
+
+ json_get_keys _v_keys
+ set -- $_v_keys
+ while [ "$#" -gt 0 ]; do
+ json_get_var _v_val "$1"
+ __jshn_raw_append "$_v_dest" "$_v_val"
+ shift
+ done
+ [ -n "$_select" ] && json_select ..
+
+ return 0
}
json_get_var() {
json_select() {
local target="$1"
local type
+ local cur
[ -z "$1" ] && {
_json_set_var JSON_CUR "JSON_VAR"
return 0
}
[[ "$1" == ".." ]] && {
- eval "JSON_CUR=\"\${UP_$JSON_CUR}\""
+ _json_get_var cur JSON_CUR
+ _json_get_var cur "UP_$cur"
+ _json_set_var JSON_CUR "$cur"
return 0
}
json_get_type type "$target"
case "$type" in
object|array)
- _json_get_var JSON_CUR "$target"
+ json_get_var cur "$target"
+ _json_set_var JSON_CUR "$cur"
;;
*)
echo "WARNING: Variable '$target' does not exist or is not an array/object"
;;
esac
}
+
+json_is_a() {
+ local type
+
+ json_get_type type "$1"
+ [ "$type" = "$2" ]
+}