rustbook

package
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Published: Jun 14, 2026 License: Apache-2.0 Imports: 8 Imported by: 0

Documentation

Overview

Package rustbook is the library behind the rustbook command line: the HTTP client, request shaping, and the typed data models for the Rust Programming Language book at doc.rust-lang.org.

The Client here is the spine every command shares. It sets a real User-Agent, paces requests so a busy session stays polite, and retries the transient failures (429 and 5xx) that any public site throws under load.

Index

Constants

View Source
const BaseURL = "https://" + Host

BaseURL is the root every request is built from.

View Source
const DefaultUserAgent = "rustbook/dev (+https://github.com/tamnd/rustbook-cli)"

DefaultUserAgent identifies the client to the server. A real, honest User-Agent is both polite and the thing most likely to keep you unblocked.

View Source
const Host = "doc.rust-lang.org"

Host is the site this client talks to, and the host the URI driver in domain.go claims.

Variables

This section is empty.

Functions

This section is empty.

Types

type Chapter

type Chapter struct {
	Rank   int    `json:"rank"   csv:"rank"   tsv:"rank"`
	Number string `json:"number" csv:"number" tsv:"number"`
	Title  string `json:"title"  csv:"title"  tsv:"title"`
	URL    string `json:"url"    csv:"url"    tsv:"url"`
}

Chapter is one entry from the Rust book table of contents. Rank is the 1-based position in the full flat list; Number is the dotted section number like "1", "1.1", or "" for front-matter entries; Title is plain text.

type Client

type Client struct {
	HTTP      *http.Client
	UserAgent string
	// Rate is the minimum gap between requests. Zero means no pacing.
	Rate    time.Duration
	Retries int
	// contains filtered or unexported fields
}

Client talks to the Rust book site over HTTP.

func NewClient

func NewClient() *Client

NewClient returns a Client with sensible defaults: a 30s timeout, a 200ms minimum gap between requests, and five retries on transient errors.

func (*Client) Chapters

func (c *Client) Chapters(ctx context.Context) ([]*Chapter, error)

Chapters fetches the Rust book table of contents and returns all chapters and sections as a flat list in document order.

func (*Client) Get

func (c *Client) Get(ctx context.Context, url string) ([]byte, error)

Get fetches url and returns the response body. It paces and retries according to the client's settings. The caller owns nothing extra; the body is read fully and closed here.

type Domain

type Domain struct{}

Domain is the rustbook driver. It carries no state; the per-run client is built by the factory Register hands kit.

func (Domain) Info

func (Domain) Info() kit.DomainInfo

Info describes the scheme, the hostnames a pasted link is matched against, and the identity reused for the binary's help and version.

func (Domain) Register

func (Domain) Register(app *kit.App)

Register installs the client factory and every operation onto app.

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