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import { readdirSync, writeFile } from "fs";
import * as path from "path";
import { red, cyan, yellow } from "colors";
const StreamZip = require('node-stream-zip');
export interface DeviceDocument {
title: string;
shortDescription: string;
longDescription: string;
company: string;
year: number;
originalPrice: number;
degreesOfFreedom: number;
dimensions: string;
primaryKey: string;
secondaryKey: string;
}
type Converter<T> = (raw: string) => { transformed?: T, error?: string };
interface Processor<T> {
exp: RegExp;
transformer?: Converter<T>;
}
const RegexMap = new Map<keyof DeviceDocument, Processor<any>>([
["title", { exp: /contact\s+(.*)Short Description:/ }],
["company", { exp: /Company:\s+([^\|]*)\s+\|/ }],
["year", { exp: /Year:\s+([^\|]*)\s+\|/, transformer: numberValue }],
["primaryKey", { exp: /Primary:\s+(.*)Secondary:/, transformer: collectTokens }],
["secondaryKey", { exp: /Secondary:\s+([^\{\}]*)Links/, transformer: collectTokens }],
["originalPrice", { exp: /Original Price \(USD\)\:\s+\$([0-9\.]+)/, transformer: numberValue }],
["degreesOfFreedom", { exp: /Degrees of Freedom:\s+([0-9]+)/, transformer: numberValue }],
["dimensions", { exp: /Dimensions\s+\(L x W x H\):\s+([0-9]+\s+x\s+[0-9]+\s+x\s+[0-9]+\s\([A-Za-z]+\))/ }],
["shortDescription", { exp: /Short Description:\s+(.*)Bill Buxton[’']s Notes/ }],
["longDescription", { exp: /Bill Buxton[’']s Notes(.*)Device Details/ }],
]);
function numberValue(raw: string) {
const transformed = Number(raw);
if (isNaN(transformed)) {
return { error: `${transformed} cannot be parsed to a numeric value.` };
}
return { transformed };
}
function collectTokens(raw: string) {
return { transformed: raw.replace(/,|\s+and\s+/g, " ").split(/\s+/).sort() };
}
const deviceKeys = Array.from(RegexMap.keys());
function printEntries(zip: any) {
console.log("READY!", zip.entriesCount);
for (const entry of Object.values(zip.entries()) as any[]) {
const desc = entry.isDirectory ? 'directory' : `${entry.size} bytes`;
console.log(`Entry ${entry.name}: ${desc}`);
}
}
export async function open(path: string) {
const zip = new StreamZip({
file: path,
storeEntries: true
});
return new Promise<string>((resolve, reject) => {
zip.on('ready', () => {
let body = "";
zip.stream("word/document.xml", (error: any, stream: any) => {
if (error) {
reject(error);
}
stream.on('data', (chunk: any) => body += chunk.toString());
stream.on('end', () => {
resolve(body);
zip.close();
});
});
});
});
}
export async function extract(path: string) {
const contents = await open(path);
let body = "";
const components = contents.toString().split('<w:t');
for (const component of components) {
const tags = component.split('>');
const content = tags[1].replace(/<.*$/, "");
body += content;
}
return body;
}
function tryGetValidCapture(matches: RegExpExecArray | null) {
let captured: string;
if (!matches || !(captured = matches[1])) {
return undefined;
}
const lower = captured.toLowerCase();
if (/to come/.test(lower)) {
return undefined;
}
if (lower.includes("xxx")) {
return undefined;
}
if (!captured.toLowerCase().replace(/[….\s]+/g, "").length) {
return undefined;
}
return captured;
}
export function analyze(path: string, body: string): { device?: DeviceDocument, errors?: any } {
const device: any = {};
const segments = path.split("/");
const filename = segments[segments.length - 1].replace("Bill_Notes_", "");
const errors: any = { filename };
for (const key of deviceKeys) {
const { exp, transformer } = RegexMap.get(key)!;
const matches = exp.exec(body);
let captured = tryGetValidCapture(matches);
if (!captured) {
errors[key] = `ERR__${key.toUpperCase()}__: outer match ${matches === null ? "wasn't" : "was"} captured.`;
continue;
}
if (!transformer) {
captured = captured.replace(/\./g, ". ").replace(/\:/g, ": ").replace(/\,/g, ", ").replace(/\?/g, "? ").trimRight();
captured = captured.replace(/\s{2,}/g, " ");
} else {
const { error, transformed } = transformer(captured);
if (error) {
errors[key] = `__ERR__${key.toUpperCase()}__TRANSFORM__: ${error}`;
continue;
}
captured = transformed;
}
device[key] = captured;
}
const errorKeys = Object.keys(errors);
if (errorKeys.length > 1) {
console.log(red(`\n@ ${cyan(filename.toUpperCase())}...`));
errorKeys.forEach(key => key !== "filename" && console.log(red(errors[key])));
return { errors };
}
return { device };
}
async function parse() {
const sourceDirectory = path.resolve(`${__dirname}/source`);
const candidates = readdirSync(sourceDirectory).filter(file => file.endsWith(".doc") || file.endsWith(".docx")).map(file => `${sourceDirectory}/${file}`);
const imported = await Promise.all(candidates.map(async path => ({ path, body: await extract(path) })));
// const imported = [{ path: candidates[10], body: await extract(candidates[10]) }];
const data = imported.map(({ path, body }) => analyze(path, body));
const masterdevices: DeviceDocument[] = [];
const masterErrors: any[] = [];
data.forEach(({ device, errors }) => {
if (device) {
masterdevices.push(device);
} else {
masterErrors.push(errors);
}
});
const total = candidates.length;
// if (masterdevices.length + masterErrors.length !== total) {
// throw new Error(`Encountered a ${masterdevices.length} to ${masterErrors.length} mismatch in device / error split!`);
// }
console.log();
await writeOutputFile("buxton.json", masterdevices, total, true);
await writeOutputFile("errors.json", masterErrors, total, false);
console.log();
}
async function writeOutputFile(relativePath: string, data: any[], total: number, success: boolean) {
console.log(yellow(`Encountered ${data.length} ${success ? "valid" : "invalid"} documents out of ${total} candidates. Writing ${relativePath}...`));
return new Promise<void>((resolve, reject) => {
const destination = path.resolve(__dirname, relativePath);
const contents = JSON.stringify(data, undefined, 4);
writeFile(destination, contents, err => err ? reject(err) : resolve());
});
}
parse();
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