@dotbase/hl7-v2-message/lib/2.1/parser/hl7Parser.js

Parses HL7 v2.x messages into typed javascript objects and makes them easily accessable.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.Hl7Parser = void 0;
const tslib_1 = require("tslib");
const messageParser_1 = tslib_1.__importDefault(require("./messageParser"));
const fieldParser_1 = tslib_1.__importDefault(require("./fieldParser"));
const __1 = tslib_1.__importDefault(require(".."));
class Hl7Parser {
    static parse(rawMessage) {
        const rawSegments = Hl7Parser.splitSegments(rawMessage);
        const mshSegment = Hl7Parser.getMessageHeader(rawSegments);
        const messageType = mshSegment.fields.MSH_9.value;
        return messageParser_1.default.initMessageSegments(messageType, mshSegment, rawSegments);
    }
    static splitSegments(rawMessage) {
        return rawMessage.split(/(\n|<cr>)/).map((segment) => this.splitSegment(segment));
    }
    static splitSegment(rawSegment) {
        const type = rawSegment.substring(0, rawSegment.indexOf("|"));
        let splitValue = rawSegment.substring(rawSegment.indexOf("|") + 1);
        if (type === "MSH")
            splitValue = `|${splitValue}`;
        return {
            type: type,
            fields: Hl7Parser.splitFields(splitValue),
        };
    }
    static splitFields(rawFields) {
        return rawFields.split("|");
    }
    static getMessageHeader(rawSegments) {
        const rawMSH = rawSegments.find((segment) => segment.type === "MSH");
        if (!rawMSH)
            throw Error("Missing mandatory segment of type MSH");
        return fieldParser_1.default.initSegmentFields(new __1.default.segments.MSH_Segment(), rawMSH);
    }
}
exports.Hl7Parser = Hl7Parser;
exports.default = Hl7Parser.parse;