120 lines
3.7 KiB
Rust
120 lines
3.7 KiB
Rust
use crate::get_book_dir;
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use clap::{arg, ArgMatches, Command as ClapCommand};
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use mdbook::config;
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use mdbook::errors::Result;
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use mdbook::MDBook;
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use std::io;
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use std::io::Write;
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use std::process::Command;
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// Create clap subcommand arguments
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pub fn make_subcommand() -> ClapCommand {
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ClapCommand::new("init")
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.about("Creates the boilerplate structure and files for a new book")
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.arg(
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arg!([dir]
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"Directory to create the book in\n\
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(Defaults to the current directory when omitted)"
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)
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.value_parser(clap::value_parser!(std::path::PathBuf)),
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)
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.arg(arg!(--theme "Copies the default theme into your source folder"))
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.arg(arg!(--force "Skips confirmation prompts"))
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.arg(arg!(--title <title> "Sets the book title"))
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.arg(
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arg!(--ignore <ignore> "Creates a VCS ignore file (i.e. .gitignore)")
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.value_parser(["none", "git"]),
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)
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}
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// Init command implementation
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pub fn execute(args: &ArgMatches) -> Result<()> {
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let book_dir = get_book_dir(args);
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let mut builder = MDBook::init(&book_dir);
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let mut config = config::Config::default();
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// If flag `--theme` is present, copy theme to src
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if args.get_flag("theme") {
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let theme_dir = book_dir.join("theme");
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println!();
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println!("Copying the default theme to {}", theme_dir.display());
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// Skip this if `--force` is present
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if !args.get_flag("force") && theme_dir.exists() {
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println!("This could potentially overwrite files already present in that directory.");
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print!("\nAre you sure you want to continue? (y/n) ");
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// Read answer from user and exit if it's not 'yes'
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if confirm() {
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builder.copy_theme(true);
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}
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} else {
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builder.copy_theme(true);
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}
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}
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if let Some(ignore) = args.get_one::<String>("ignore").map(|s| s.as_str()) {
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match ignore {
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"git" => builder.create_gitignore(true),
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_ => builder.create_gitignore(false),
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};
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} else if !args.get_flag("force") {
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println!("\nDo you want a .gitignore to be created? (y/n)");
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if confirm() {
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builder.create_gitignore(true);
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}
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}
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config.book.title = if args.contains_id("title") {
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args.get_one::<String>("title").map(String::from)
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} else if args.get_flag("force") {
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None
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} else {
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request_book_title()
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};
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if let Some(author) = get_author_name() {
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debug!("Obtained user name from gitconfig: {:?}", author);
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config.book.authors.push(author);
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}
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builder.with_config(config);
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builder.build()?;
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println!("\nAll done, no errors...");
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Ok(())
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}
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/// Obtains author name from git config file by running the `git config` command.
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fn get_author_name() -> Option<String> {
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let output = Command::new("git")
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.args(["config", "--get", "user.name"])
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.output()
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.ok()?;
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if output.status.success() {
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Some(String::from_utf8_lossy(&output.stdout).trim().to_owned())
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} else {
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None
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}
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}
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/// Request book title from user and return if provided.
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fn request_book_title() -> Option<String> {
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println!("What title would you like to give the book? ");
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io::stdout().flush().unwrap();
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let mut resp = String::new();
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io::stdin().read_line(&mut resp).unwrap();
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let resp = resp.trim();
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if resp.is_empty() {
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None
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} else {
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Some(resp.into())
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}
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}
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// Simple function for user confirmation
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fn confirm() -> bool {
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io::stdout().flush().unwrap();
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let mut s = String::new();
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io::stdin().read_line(&mut s).ok();
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matches!(s.trim(), "Y" | "y" | "yes" | "Yes")
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}
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