115 lines
4.4 KiB
Smarty
115 lines
4.4 KiB
Smarty
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{{- /*
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tplYaml
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input: map with 2 keys:
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- doc: interface{}
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- ctx: context to pass to tpl function
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output: JSON encoded map with 1 key:
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- doc: interface{} with any keys called tpl or tplSpread values templated and replaced
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maps matching the following syntax will be templated and parsed as YAML
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{
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$tplYaml: string
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}
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maps matching the follow syntax will be templated, parsed as YAML, and spread into the parent map/slice
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{
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$tplYamlSpread: string
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}
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*/}}
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{{- define "tplYaml" -}}
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{{- $patch := get (include "tplYamlItr" (dict "ctx" .ctx "parentKind" "" "parentPath" "" "path" "/" "value" .doc) | fromJson) "patch" -}}
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{{- include "jsonpatch" (dict "doc" .doc "patch" $patch) -}}
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{{- end -}}
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{{- /*
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tplYamlItr
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input: map with 4 keys:
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- path: string JSONPath to current element
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- parentKind: string kind of parent element
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- parentPath: string JSONPath to parent element
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- value: interface{}
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- ctx: context to pass to tpl function
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output: JSON encoded map with 1 key:
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- patch: list of patches to apply in order to template
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*/}}
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{{- define "tplYamlItr" -}}
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{{- $params := . -}}
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{{- $kind := kindOf $params.value -}}
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{{- $patch := list -}}
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{{- $joinPath := $params.path -}}
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{{- if eq $params.path "/" -}}
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{{- $joinPath = "" -}}
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{{- end -}}
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{{- $joinParentPath := $params.parentPath -}}
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{{- if eq $params.parentPath "/" -}}
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{{- $joinParentPath = "" -}}
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{{- end -}}
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{{- if eq $kind "slice" -}}
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{{- $iAdj := 0 -}}
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{{- range $i, $v := $params.value -}}
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{{- $iPath := printf "%s/%d" $joinPath (add $i $iAdj) -}}
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{{- $itrPatch := get (include "tplYamlItr" (dict "ctx" $params.ctx "parentKind" $kind "parentPath" $params.path "path" $iPath "value" $v) | fromJson) "patch" -}}
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{{- $itrLen := len $itrPatch -}}
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{{- if gt $itrLen 0 -}}
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{{- $patch = concat $patch $itrPatch -}}
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{{- if eq (get (index $itrPatch 0) "op") "remove" -}}
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{{- $iAdj = add $iAdj (sub $itrLen 2) -}}
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{{- end -}}
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{{- end -}}
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{{- end -}}
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{{- else if eq $kind "map" -}}
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{{- if and (eq (len $params.value) 1) (or (hasKey $params.value "$tplYaml") (hasKey $params.value "$tplYamlSpread")) -}}
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{{- $tpl := get $params.value "$tplYaml" -}}
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{{- $spread := false -}}
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{{- if hasKey $params.value "$tplYamlSpread" -}}
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{{- if eq $params.path "/" -}}
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{{- fail "cannot $tplYamlSpread on root object" -}}
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{{- end -}}
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{{- $tpl = get $params.value "$tplYamlSpread" -}}
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{{- $spread = true -}}
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{{- end -}}
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{{- $res := tpl $tpl $params.ctx -}}
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{{- $res = get (fromYaml (tpl "tpl: {{ nindent 2 .res }}" (merge (dict "res" $res) $params.ctx))) "tpl" -}}
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{{- if eq $spread false -}}
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{{- $patch = append $patch (dict "op" "replace" "path" $params.path "value" $res) -}}
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{{- else -}}
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{{- $resKind := kindOf $res -}}
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{{- if and (ne $resKind "invalid") (ne $resKind $params.parentKind) -}}
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{{- fail (cat "can only $tplYamlSpread slice onto a slice or map onto a map; attempted to spread" $resKind "on" $params.parentKind "at path" $params.path) -}}
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{{- end -}}
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{{- $patch = append $patch (dict "op" "remove" "path" $params.path) -}}
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{{- if eq $resKind "invalid" -}}
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{{- /* no-op */ -}}
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{{- else if eq $resKind "slice" -}}
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{{- range $v := reverse $res -}}
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{{- $patch = append $patch (dict "op" "add" "path" $params.path "value" $v) -}}
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{{- end -}}
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{{- else -}}
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{{- range $k, $v := $res -}}
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{{- $kPath := replace "~" "~0" $k -}}
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{{- $kPath = replace "/" "~1" $kPath -}}
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{{- $kPath = printf "%s/%s" $joinParentPath $kPath -}}
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{{- $patch = append $patch (dict "op" "add" "path" $kPath "value" $v) -}}
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{{- end -}}
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{{- end -}}
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{{- end -}}
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{{- else -}}
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{{- range $k, $v := $params.value -}}
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{{- $kPath := replace "~" "~0" $k -}}
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{{- $kPath = replace "/" "~1" $kPath -}}
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{{- $kPath = printf "%s/%s" $joinPath $kPath -}}
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{{- $itrPatch := get (include "tplYamlItr" (dict "ctx" $params.ctx "parentKind" $kind "parentPath" $params.path "path" $kPath "value" $v) | fromJson) "patch" -}}
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{{- if gt (len $itrPatch) 0 -}}
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{{- $patch = concat $patch $itrPatch -}}
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{{- end -}}
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{{- end -}}
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{{- end -}}
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{{- end -}}
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{{- toJson (dict "patch" $patch) -}}
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{{- end -}}
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