Code Explainers

Code explainers tagged #escaping

rust 
pub fn extract_quoted_fields(line: &str) -> Vec<String> {
    let mut fields = Vec::new();
    let mut current = String::new();
    let mut in_quotes = false;

Parsing quoted fields with a state machine in Rust

state-machine parsing string-processing
Intermediate 7 steps
ruby 
module WifiQrCode
  ESCAPE_CHARS = /([\\;,:"])/.freeze
 
  AUTH_TYPES = {

Building a Wi-Fi QR code payload in Ruby

string-formatting validation escaping
Intermediate 9 steps
ruby 
require "securerandom"
require "time"
 
class ICalEvent

Building an iCalendar file in Ruby

serialization string-formatting file-formats
Intermediate 10 steps
php 
<?php
 
namespace App\Services;
 

Building a valid iCalendar feed in PHP in Laravel

ical serialization formatting
Intermediate 8 steps
typescript 
type CsvColumn<T> = {
  header: string;
  value: (row: T) => string | number | boolean | null | undefined;
};

Building a type-safe CSV writer in TypeScript

generics serialization escaping
Intermediate 7 steps
typescript 
type MatchSegment = {
  text: string;
  matched: boolean;
};

Splitting text into highlighted match segments

regex string-matching text-highlighting
Intermediate 8 steps
typescript 
type CsvRecord = Record<string, string>;
 
function parseCsv(input: string): CsvRecord[] {
  const rows: string[][] = [];

Parsing CSV with a character state machine

state-machine parsing string-processing
Intermediate 8 steps
javascript 
const ESCAPE_MAP = {
  '&': '&amp;',
  '<': '&lt;',
  '>': '&gt;',

Escaping HTML before injecting user content

xss-prevention escaping dom
Intermediate 6 steps
php 
<?php
 
namespace App\View;
 

Building a safe HTML escaper in PHP

security xss escaping
Intermediate 6 steps