CBA PDF statement converter to PDF or CSV

README.md

UPDATE: 26/11/2022

I have published this as an open source website, please check it out here:

• Web Site URL: https://alshdavid.github.io/commbank-statement-converter

• Source Code: https://alshdavid.github.io/commbank-statement-converter

index.js

"use strict";var t=this&&this.__importDefault||function(t){return t&&t.__esModule?t:{default:t}};Object.defineProperty(exports,"__esModule",{value:!0}),exports.parsePDF=void 0;const e=t(require("fs")),n=t(require("pdf-parse")),s=require("json2csv");async function r(t,r){const l=e.default.readFileSync(t),o=(await n.default(l)).text.split("TransactionDebitCreditBalance");o.shift();let a=[],c=0;for(let t of o){const{results:e,finalBalance:n}=i(t,c);c=n,a=[...a,...e]}if(r&&r.endsWith(".json"))e.default.writeFileSync(r,JSON.stringify(a,null,2));else if(r&&r.endsWith(".csv")){const t=s.parse(a);e.default.writeFileSync(r,t)}else console.log(a)}function i(t,e=0){const{openingBalance:n,firstPassResults:s}=function(t){const e=t.split("\n");let n;e.shift();const s=[];if(function(t){return t.includes("OPENING BALANCE")}(e[0])){n=l((e.shift()||"").split("$")[1])}let r=!1;for(const t of e)if(!0!==r){if(""===t)break;if(t.includes("CLOSING BALANCE"))break;t.includes("CREDIT INTEREST EARNED")?r=!0:s.push(t)}else r=!1;return{firstPassResults:s,openingBalance:n}}(t);return function(t,e){const n=[];let s=e;for(const e of t){const t=e.substring(0,6);let[r,...i]=e.substring(6,e.length).split("$");const c=o(i[0]),u=l(i[1]),f=u-s;let g=0;if(0===c){let e=a(f);e.startsWith("-")&&(e=e.substring(1,e.length));e!==r.substring(r.length-e.length,r.length)&&(console.log("WrongDebitCalc"),console.log({newBalance:u-Math.abs(f),diff:Math.abs(f),ds:e,date:t,label:r,debit:g,credit:c,balance:u})),g=Math.abs(f),r=r.substring(0,r.length-e.length)}n.push({date:t,label:r,debit:g,credit:c,balance:u}),s=u}return{results:n,finalBalance:s}}(function(t){const e=[];let n="";for(const s of t){1===s.split("$").length?n+=s:(e.push(n+s),n="")}return e}(s),n||e)}function l(t){if(t.includes("CR"))return o(t.split("CR")[0]);if(t.includes("DR"))return-Math.abs(o(t.split("DR")[0]));throw"No Balance"}function o(t){return t?parseInt(t.replace(/,/g,"").replace(/\./g,"")):0}function a(t){const e=t.toString().startsWith("-")?"-":"",n=t.toString().replace("-","");if(1===n.length)return e+"0.0"+n;if(2===n.length)return e+"0."+n;const s=n.substring(0,n.length-2),r=n.substring(n.length-2,n.length);return parseInt(s).toLocaleString()+"."+r}process.argv[2]&&r(process.argv[2],process.argv[3]),exports.parsePDF=r

instructions.txt

Usage

Contact alshdavid@gmail.com for help

Download and install node from https://nodejs.org/en/download/
Copy the "index.js" script below to you computer.

Open up your terminal, cmd, or powershell.

run the following once:
npm install pdf-parse json2csv

Navigate to the directory then run the following for each statement:
node index.js ./statement.pdf ./output.csv

If you want to output a JSON file
node index.js ./statement.pdf ./output.json

source.ts

import fs from 'fs'
import pdf from 'pdf-parse'
import { parse } from 'json2csv';

export type Cents = number

export type Record = {
  date: string, 
  label: string, 
  debit: Cents, 
  credit: Cents,
  balance: Cents
};

if (process.argv[2]) {
  parsePDF(process.argv[2], process.argv[3])
}

export async function parsePDF(file: string, outputFile?: string){
  const dataBuffer = fs.readFileSync(file);
  const data = await pdf(dataBuffer)

  const vs = data.text.split('TransactionDebitCreditBalance')
  vs.shift()

  let output: Record[] = []
  let previousBalance = 0
  for (let v of vs) {
    const { results, finalBalance } = processTable(v, previousBalance)
    previousBalance = finalBalance
    output = [ ...output, ...results ]
  }

  if (outputFile && outputFile.endsWith('.json')) {
    fs.writeFileSync(outputFile, JSON.stringify(output, null, 2))
  } else if (outputFile && outputFile.endsWith('.csv')) {
    const csv = parse(output);
    fs.writeFileSync(outputFile, csv)
  } else {
    console.log(output)
  }
}

function isOpeningBalance(target: string) {
  return target.includes('OPENING BALANCE')
}

function getTabletLines(target: string): { firstPassResults: string[], openingBalance: number | undefined } {
  const l = target.split('\n')
  l.shift()
  
  let openingBalance: number | undefined
  const p = []

  if (isOpeningBalance(l[0])) {
    const openingLine = l.shift() || ''
    openingBalance = parseBalance(openingLine.split('$')[1])
  }

  let skip = false
  for (const line of l) {
    if (skip === true) {
      skip = false
      continue
    }
    if (line === '') {
      break
    }
    if (line.includes('CLOSING BALANCE')) {
      break
    }
    if (line.includes('CREDIT INTEREST EARNED')) {
      skip = true
      continue
    }
    p.push(line)
  }
  return {
    firstPassResults: p,
    openingBalance    
  }
}

function squashLines(target: string[]): string[] {
  const p2: string[] = []
  let temp = ''
  for (const line of target) {
    const v = line.split('$')
    if (v.length === 1) {
      temp += line
    } else {
      p2.push(temp + line)
      temp = ''
    }
  }
  return p2
}

function generateRecords(target: string[], initialBalance: number): { results: Record[], finalBalance: Cents } {
  const p3: Record[] = []
  let previousBalance = initialBalance
  for (const line of target) {
    const date = line.substring(0, 6)
    let [ label, ...data ] = line.substring(6, line.length).split('$')
    const credit = moneyToCents(data[0])
    const balance = parseBalance(data[1])
    const diff = balance - previousBalance
    let debit = 0
    if (credit === 0) {
      let ds = centsToMoney(diff)
      if (ds.startsWith('-')) {
        ds = ds.substring(1, ds.length)
      }
      const diffInLabel = label.substring(label.length - ds.length, label.length)
      if (ds !== diffInLabel) {
        console.log('WrongDebitCalc')
        console.log({
          newBalance: balance - Math.abs(diff),
          diff: Math.abs(diff),
          ds,
          date, 
          label, 
          debit, 
          credit, 
          balance
        })
      }
      debit = Math.abs(diff)
      label = label.substring(0, label.length - ds.length)
    }
    
    p3.push({ 
      date, 
      label, 
      debit, 
      credit, 
      balance
    })

    previousBalance = balance
  }
  return {
    results: p3,
    finalBalance: previousBalance
  }
}

function processTable(t: string, initialBalance: Cents = 0) {
  const { openingBalance, firstPassResults } = getTabletLines(t)
  const squashedLines = squashLines(firstPassResults)
  return generateRecords(squashedLines, openingBalance || initialBalance)
}

function parseBalance(balance: string): Cents {
  if (balance.includes('CR')) {
    return moneyToCents(balance.split('CR')[0])
  } if (balance.includes('DR')) {
    return -Math.abs(moneyToCents(balance.split('DR')[0]))
  }
  throw 'No Balance'
}

function moneyToCents(money: string): Cents {
  return money ? parseInt(money.replace(/,/g, '').replace(/\./g, '')) : 0
}

function centsToMoney(input: Cents): string {
  const negative = input.toString().startsWith('-') ? '-' : ''
  const iS = input.toString().replace('-', '')
  if (iS.length === 1) {
    return negative + '0.0'+ iS
  }
  if (iS.length === 2) {
    return negative + '0.'+ iS
  }
  const dollars = iS.substring(0, iS.length - 2)
  const cents = iS.substring(iS.length - 2, iS.length)
  const localDollars = parseInt(dollars).toLocaleString()
  return localDollars + '.' + cents
}

Updated this to work from in the browser:

URL: https://alshdavid.github.io/commbank-statement-converter
Repo: https://github.com/alshdavid/commbank-statement-converter