iso8583_esm
Version:
A javascript library for messaging in iso 8583 messaging format.
203 lines (202 loc) • 9.91 kB
JavaScript
import { Tools as T } from '../tools';
import { Formats as formats } from '../formats';
import { checkDataType as types } from '../types';
function assembleKeyValueString(self) {
const mtiCheck = self.checkMTI();
const validate = self.validateMessage();
const state = self.rebuildExtensions();
// expects array of 0s & 1s and data-json object
if (mtiCheck && validate && state) {
const bitmaps_127 = self.assembleBitMap_127();
const bmpsHex = self.getBitMapHex_127_ext();
// @ts-ignore
let buff = Buffer.alloc(8, bmpsHex, 'hex');
if (self.formats['127.1'] != undefined) {
if (self.formats['127.1'].ContentType === 'an') {
// @ts-ignore
buff = Buffer.alloc(16, bmpsHex, 'ascii');
}
}
const fieldkv = [];
// @ts-ignore
for (let i = 0; i < bitmaps_127.length; i++) {
const field = '127.' + (Number(i) + 1);
const subField = Number(i) + 1;
if (bitmaps_127[i] === 1) {
if (!self.Msg[field]) {
return T.toErrorObject('Field ' + field + ' in bitmap but not in json');
}
const this_format = self.formats[field] || formats[field];
if (this_format) {
const state = types(this_format, self.Msg[field], field);
// @ts-ignore
if (state.error) {
return T.toErrorObject('Message is invalid');
}
if (this_format.LenType === 'fixed') {
if (formats[field].ContentType === 'b') {
if (this_format.MaxLen === self.Msg[field].length) {
const size = this_format.MaxLen / 2;
fieldkv.push(`${subField}=${self.Msg[field]}`);
}
else {
return T.toInvalidLengthErrorObject(field, self.Msg[field].length);
}
}
else {
if (this_format.MaxLen === self.Msg[field].length) {
fieldkv.push(`${subField}=${self.Msg[field]}`);
}
else {
return T.toInvalidLengthErrorObject(field, self.Msg[field].length);
}
}
}
else {
const thisLen = T.getLenType(this_format.LenType);
if (!this_format.MaxLen)
return T.toErrorObject('max length not implemented for ' + this_format.LenType + field);
if (self.Msg[field] && self.Msg[field].length > this_format.MaxLen)
return T.toInvalidLengthErrorObject(field, self.Msg[field].length);
if (thisLen === 0) {
return T.toErrorObject('field' + field + ' has no field implementation');
}
else {
const actualLength = self.Msg[field].length;
const padCount = thisLen - actualLength.toString().length;
let lenIndicator = actualLength.toString();
for (let i = 0; i < padCount; i++)
lenIndicator = 0 + lenIndicator;
const thisBuff = Buffer.alloc(self.Msg[field].length + lenIndicator.length, lenIndicator + self.Msg[field]);
fieldkv.push(`${subField}=${self.Msg[field]}`);
}
}
}
else
return T.toErrorObject('field ' + field + ' not implemented');
}
}
if (self.embededProperties.exclude127Bitmap) {
buff = Buffer.alloc(0);
}
const dataString = fieldkv.join('; ');
const dataLength = dataString.length;
// @ts-ignore
buff = Buffer.concat([buff, Buffer.alloc(dataLength, dataString)]);
const padCount = T.getLenType(formats['127'].LenType);
let actualLen = buff.byteLength.toString();
const x = padCount - actualLen.length;
for (let i = 0; i < x; i++)
actualLen = '0' + actualLen;
const lenBuff = Buffer.alloc(actualLen.length, actualLen);
// @ts-ignore
return Buffer.concat([lenBuff, buff]);
}
else
return T.toErrorObject('Invalid Message in 127 extensions');
}
/**
* Assemble fields 127.0-63 into ISO 8583 encoded string
* @method assemble0_127_extensions
* @memberof module:Message-Package
*/
export function assemble0_127_extensions() {
if (this.embededProperties.field_127_25_key_value_string) {
const buff = assembleKeyValueString(this);
return buff;
}
const mtiCheck = this.checkMTI();
const validate = this.validateMessage(this.Msg);
const state = this.rebuildExtensions();
// expects array of 0s & 1s and data-json object
if (mtiCheck && validate && state) {
const bitmaps_127 = this.assembleBitMap_127();
const bmpsHex = this.getBitMapHex_127_ext();
let buff = Buffer.alloc(8, bmpsHex, 'hex');
for (let i = 0; i < bitmaps_127.length; i++) {
const field = '127.' + (Number(i) + 1);
if (bitmaps_127[i] === 1) {
if (field === '127.25') {
const _25_buff = this.assemble127_25_extensions();
if (!_25_buff.error) {
if (_25_buff.byteLength > 12) {
buff = Buffer.concat([buff, _25_buff]);
continue;
}
else {
continue;
}
}
}
if (!this.Msg[field]) {
return T.toErrorObject('Field ' + field + ' in bitmap but not in json');
}
const this_format = this.formats[field] || formats[field];
if (this_format) {
const state = types(this_format, this.Msg[field], field);
// @ts-ignore
if (state.error) {
return T.toErrorObject('Message is invalid');
}
if (this_format.LenType === 'fixed') {
if (formats[field].ContentType === 'b') {
if (this_format.MaxLen === this.Msg[field].length) {
const size = this_format.MaxLen / 2;
const thisBuff = Buffer.alloc(size, this.Msg[field], 'hex');
// @ts-ignore
buff = Buffer.concat([buff, thisBuff]);
}
else {
return T.toInvalidLengthErrorObject(field, this.Msg[field].length);
}
}
else {
if (this_format.MaxLen === this.Msg[field].length) {
const thisBuff = Buffer.alloc(this.Msg[field].length, this.Msg[field]);
// @ts-ignore
buff = Buffer.concat([buff, thisBuff]);
}
else {
return T.toInvalidLengthErrorObject(field, this.Msg[field].length);
}
}
}
else {
const thisLen = T.getLenType(this_format.LenType);
if (!this_format.MaxLen)
return T.toErrorObject('max length not implemented for ' + this_format.LenType + field);
if (this.Msg[field] && this.Msg[field].length > this_format.MaxLen)
return T.toInvalidLengthErrorObject(field, this.Msg[field].length);
if (thisLen === 0) {
return T.toErrorObject('field' + field + ' has no field implementation');
}
else {
const actualLength = this.Msg[field].length;
const padCount = thisLen - actualLength.toString().length;
let lenIndicator = actualLength.toString();
for (let i = 0; i < padCount; i++)
lenIndicator = 0 + lenIndicator;
const thisBuff = Buffer.alloc(this.Msg[field].length + lenIndicator.length, lenIndicator + this.Msg[field]);
// @ts-ignore
buff = Buffer.concat([buff, thisBuff]);
}
}
}
else
return T.toErrorObject('field ' + field + ' not implemented');
}
}
const padCount = T.getLenType(formats['127'].LenType);
let actualLen = buff.byteLength.toString();
const x = padCount - actualLen.length;
for (let i = 0; i < x; i++)
actualLen = '0' + actualLen;
const bitmapBuff = buff.slice(0, 8);
const lenBuff = Buffer.alloc(actualLen.length, actualLen);
const dataBuff = buff.slice(8, buff.byteLength);
// @ts-ignore
return Buffer.concat([lenBuff, bitmapBuff, dataBuff]);
}
else
return T.toErrorObject('Invalid Message in 127 extensions');
}