Multi-Tool Rust

A self-contained, single-Cargo-package web application built with Rocket 0.5.1 and rocket_dyn_templates (Handlebars). It ships a dark left-hand sidebar of tool links. Clicking a link opens a small, stateless developer text utility. Every tool is also exposed as a machine-readable HTTP endpoint.

Layout

• src/main.rs — Rocket configuration, mount, sidebar wiring.
• src/routes/index.rs — landing page with the sidebar.
• src/routes/tools.rs — route definitions and the sidebar link list.
• src/tools/mod.rs — the pure-Rust transforms (one pub fn per tool) plus their unit tests. No I/O, no Rocket dependency.
• templates/ — Handlebars page templates.
• check.sh — objective completion check (build, unit tests, README, and a live server smoke test).

Running

cargo build
cargo test
./check.sh

The server listens on port 8091 by default (set port in Rocket.toml).

Tools

Slug	Endpoint	Description
replace	/api/replace	?input=...&find=X&replace=_&action=N — replace up to N (all) occurrences; no params = demo X -> _
replace-all	/api/replace-all	?input=...&find=X&replace=_ — replace every occurrence; no params = demo X -> _
collapse	/api/collapse	collapse consecutive newlines to a single space
uppercase	/api/uppercase	uppercase the input
lowercase	/api/lowercase	lowercase the input
title	/api/title	title-case the input
reverse	/api/reverse	reverse the character order
trim	/api/trim	trim leading/trailing whitespace
url-encode	/api/url-encode	form-urlencoded (+ for space)
url-decode	/api/url-decode	reverse of url-encode
html-encode	/api/html-encode	encode <, >, &, ", '
html-decode	/api/html-decode	reverse of html-encode
hex-encode	/api/hex-encode	ASCII bytes to hex string
hex-decode	/api/hex-decode	hex string to text
base64-encode	/api/base64-encode	bytes to base64
base64-decode	/api/base64-decode	base64 to bytes
unicode-strip	/api/unicode-strip	drop non-ASCII characters
word-count	/api/word-count	count words/chars/lines/bytes
json-pretty	/api/json-pretty	pretty-print JSON
json-minify	/api/json-minify	compact JSON
slug	/api/slug	URL-friendly slug
case	/api/case	?action=camel|snake|kebab|pascal (default camel)
lorem	/api/lorem	generate 5 lorem-ipsum words; input words=3 or 3 sets the count

Endpoint contract

• GET /api/<slug>?input=<urlencoded> returns the raw transformed text.
• Optional extra params are chained with & (Rocket 0.5.1 route grammar: query := segment ('&' segment)*), e.g. ?input=aXbXc&find=X&replace=_&action=all.
• GET /tool/<slug>?input=... renders the page with the transform output already computed server-side; the Run button re-runs client-side via the same /api/<slug> endpoint. The result box updates live while you type (debounced) and Copy puts it on the clipboard.
• GET /tool/<slug> renders the UI page with the result in <pre id="result">.
• GET /tool/<slug>?input=...&find=X&replace=_&action=N carries the full UI state in the URL — the Find/Replace fields and case action are pre-filled server-side and the output matches a client-side re-run.

Design notes

• Transforms are pure functions in src/tools/mod.rs, fully unit-tested.
• Routes are registered most-specific-first (the &<action> arm before the bare input arm) so URLs carrying an extra parameter match the richer route.
• Each #[get(...)] handler has a unique function name to avoid Rocket 0.5.1 macro collisions.