116 lines
3.2 KiB
C++
116 lines
3.2 KiB
C++
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#include "json-patch.hpp"
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#include <nlohmann/json-schema.hpp>
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namespace
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{
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// originally from http://jsonpatch.com/, http://json.schemastore.org/json-patch
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// with fixes
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const nlohmann::json patch_schema = R"patch({
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"title": "JSON schema for JSONPatch files",
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"$schema": "http://json-schema.org/draft-04/schema#",
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"type": "array",
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"items": {
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"oneOf": [
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{
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"additionalProperties": false,
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"required": [ "value", "op", "path"],
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"properties": {
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"path" : { "$ref": "#/definitions/path" },
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"op": {
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"description": "The operation to perform.",
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"type": "string",
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"enum": [ "add", "replace", "test" ]
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},
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"value": {
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"description": "The value to add, replace or test."
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}
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}
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},
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{
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"additionalProperties": false,
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"required": [ "op", "path"],
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"properties": {
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"path" : { "$ref": "#/definitions/path" },
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"op": {
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"description": "The operation to perform.",
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"type": "string",
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"enum": [ "remove" ]
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}
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}
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},
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{
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"additionalProperties": false,
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"required": [ "from", "op", "path" ],
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"properties": {
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"path" : { "$ref": "#/definitions/path" },
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"op": {
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"description": "The operation to perform.",
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"type": "string",
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"enum": [ "move", "copy" ]
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},
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"from": {
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"$ref": "#/definitions/path",
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"description": "A JSON Pointer path pointing to the location to move/copy from."
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}
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}
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}
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]
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},
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"definitions": {
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"path": {
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"description": "A JSON Pointer path.",
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"type": "string"
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}
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}
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})patch"_json;
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} // namespace
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namespace nlohmann
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{
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json_patch::json_patch(json &&patch)
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: j_(std::move(patch))
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{
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validateJsonPatch(j_);
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}
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json_patch::json_patch(const json &patch)
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: j_(std::move(patch))
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{
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validateJsonPatch(j_);
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}
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json_patch &json_patch::add(const json::json_pointer &ptr, json value)
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{
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j_.push_back(json{{"op", "add"}, {"path", ptr}, {"value", std::move(value)}});
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return *this;
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}
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json_patch &json_patch::replace(const json::json_pointer &ptr, json value)
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{
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j_.push_back(json{{"op", "replace"}, {"path", ptr}, {"value", std::move(value)}});
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return *this;
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}
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json_patch &json_patch::remove(const json::json_pointer &ptr)
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{
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j_.push_back(json{{"op", "remove"}, {"path", ptr}});
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return *this;
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}
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void json_patch::validateJsonPatch(json const &patch)
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{
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// static put here to have it created at the first usage of validateJsonPatch
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static nlohmann::json_schema::json_validator patch_validator(patch_schema);
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patch_validator.validate(patch);
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for (auto const &op : patch)
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json::json_pointer(op["path"].get<std::string>());
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}
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} // namespace nlohmann
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