git.delta.rocks / jrsonnet / refs/heads / master

1// FIXME: Replace various helper here with inflector?23use std::{fs, path::Path};45use anyhow::Result;6use xshell::{Shell, cmd};78/// Checks that the `file` has the specified `contents`. If that is not the9/// case, updates the file and then fails the test.10pub fn ensure_file_contents(file: &Path, contents: &str) {11	if let Ok(old_contents) = fs::read_to_string(file) {12		if normalize_newlines(&old_contents) == normalize_newlines(contents) {13			// File is already up to date.14			return;15		}16	}1718	eprintln!("{} was not up-to-date, updating", file.display());19	if let Some(parent) = file.parent() {20		let _ = fs::create_dir_all(parent);21	}22	fs::write(file, contents).unwrap();23}2425// Eww, someone configured git to use crlf?26fn normalize_newlines(s: &str) -> String {27	s.replace("\r\n", "\n")28}2930pub fn pluralize(s: &str) -> String {31	// FIXME: Inflector?32	format!("{s}s")33}3435pub fn to_upper_snake_case(s: &str) -> String {36	let mut buf = String::with_capacity(s.len());37	let mut prev = false;38	for c in s.chars() {39		if c.is_ascii_uppercase() && prev {40			buf.push('_');41		}42		prev = true;4344		buf.push(c.to_ascii_uppercase());45	}46	buf47}48pub fn to_lower_snake_case(s: &str) -> String {49	let mut buf = String::with_capacity(s.len());50	let mut prev = false;51	for c in s.chars() {52		if c.is_ascii_uppercase() && prev {53			buf.push('_');54		}55		prev = true;5657		buf.push(c.to_ascii_lowercase());58	}59	buf60}6162pub fn to_pascal_case(s: &str) -> String {63	let mut buf = String::with_capacity(s.len());64	let mut prev_is_underscore = true;65	for c in s.chars() {66		if c == '_' {67			prev_is_underscore = true;68		} else if prev_is_underscore {69			buf.push(c.to_ascii_uppercase());70			prev_is_underscore = false;71		} else {72			buf.push(c.to_ascii_lowercase());73		}74	}75	buf76}7778pub fn reformat(text: &str) -> Result<String> {79	// let _e = pushenv("RUSTUP_TOOLCHAIN", "stable");80	// rustfmt()?;81	let sh = Shell::new()?;82	let stdout = cmd!(sh, "rustfmt").stdin(text).read()?;83	Ok(format!(84		"{}\n\n{}\n",85		"//! This is a generated file, please do not edit manually. Changes can be86//! made in codegeneration that lives in `xtask` top-level dir.",87		stdout88	))89}