json-joy
Version:
Collection of libraries for building collaborative editing apps.
39 lines (38 loc) • 1.69 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.xStrIns = void 0;
const json_1 = require("../../json-patch/codec/json");
const op_1 = require("../../json-patch/op");
const xStrIns = (ins, op) => {
if (op instanceof op_1.OpStrIns) {
if (ins.pos > op.pos)
return op;
return (0, json_1.operationToOp)({ ...op.toJson(), pos: op.pos + ins.str.length }, {});
}
else if (op instanceof op_1.OpStrDel) {
const del = op;
if (del.pos < ins.pos) {
const deleteLength = typeof del.str === 'string' ? del.str.length : del.len;
if (del.pos + deleteLength > ins.pos) {
const beforeLength = ins.pos - del.pos;
if (typeof del.str === 'string') {
return [
(0, json_1.operationToOp)({ ...del.toJson(), pos: ins.pos + ins.str.length, str: del.str.substr(beforeLength) }, {}),
(0, json_1.operationToOp)({ ...del.toJson(), pos: del.pos, str: del.str.substr(0, beforeLength) }, {}),
];
}
else {
return [
(0, json_1.operationToOp)({ ...del.toJson(), pos: ins.pos + ins.str.length, len: deleteLength - beforeLength }, {}),
(0, json_1.operationToOp)({ ...del.toJson(), pos: del.pos, len: beforeLength }, {}),
];
}
}
}
if (ins.pos < del.pos)
return (0, json_1.operationToOp)({ ...op.toJson(), pos: op.pos + ins.str.length }, {});
return op;
}
return op;
};
exports.xStrIns = xStrIns;