git.delta.rocks / jrsonnet / refs/commits / c678cf8e698f

1use std::{fs, path::Path};23use anyhow::{bail, Result};4use xshell::{cmd, Shell};56/// Checks that the `file` has the specified `contents`. If that is not the7/// case, updates the file and then fails the test.8pub fn ensure_file_contents(file: &Path, contents: &str) -> Result<()> {9	if let Ok(old_contents) = fs::read_to_string(file) {10		if normalize_newlines(&old_contents) == normalize_newlines(contents) {11			// File is already up to date.12			return Ok(());13		}14	}1516	eprintln!(" {} was not up-to-date, updating\n", file.display());17	if std::env::var("CI").is_ok() {18		eprintln!("NOTE: run `cargo test` locally and commit the updated files\n");19	}20	if let Some(parent) = file.parent() {21		let _ = fs::create_dir_all(parent);22	}23	fs::write(file, contents).unwrap();24	bail!("some file was not up to date and has been updated, simply re-run the tests");25}2627// Eww, someone configured git to use crlf?28fn normalize_newlines(s: &str) -> String {29	s.replace("\r\n", "\n")30}3132pub(crate) fn pluralize(s: &str) -> String {33	format!("{}s", s)34}3536pub fn to_upper_snake_case(s: &str) -> String {37	let mut buf = String::with_capacity(s.len());38	let mut prev = false;39	for c in s.chars() {40		if c.is_ascii_uppercase() && prev {41			buf.push('_')42		}43		prev = true;4445		buf.push(c.to_ascii_uppercase());46	}47	buf48}49pub fn to_lower_snake_case(s: &str) -> String {50	let mut buf = String::with_capacity(s.len());51	let mut prev = false;52	for c in s.chars() {53		if c.is_ascii_uppercase() && prev {54			buf.push('_')55		}56		prev = true;5758		buf.push(c.to_ascii_lowercase());59	}60	buf61}6263pub fn to_pascal_case(s: &str) -> String {64	let mut buf = String::with_capacity(s.len());65	let mut prev_is_underscore = true;66	for c in s.chars() {67		if c == '_' {68			prev_is_underscore = true;69		} else if prev_is_underscore {70			buf.push(c.to_ascii_uppercase());71			prev_is_underscore = false;72		} else {73			buf.push(c.to_ascii_lowercase());74		}75	}76	buf77}7879pub fn reformat(text: &str) -> Result<String> {80	// let _e = pushenv("RUSTUP_TOOLCHAIN", "stable");81	// rustfmt()?;82	let sh = Shell::new()?;83	let stdout = cmd!(sh, "rustfmt --config fn_single_line=true")84		.stdin(text)85		.read()?;86	Ok(format!(87		"{}\n\n{}\n",88		"//! This is a generated file, please do not edit manually. Changes can be89//! made in codegeneration that lives in `xtask` top-level dir.",90		stdout91	))92}