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mod action;
use action::Action;
mod transform;
use transform::Context;
use argh::FromArgs;
use regex::Regex;
use std::fmt::Write;
use std::fs::{File, OpenOptions};
use std::io::BufReader;
use std::io::Write as _;
use std::path::PathBuf;
use std::process;
#[derive(FromArgs, Debug)]
pub struct Args {
#[argh(switch)]
version: bool,
#[argh(
option,
long = "crate",
short = 'c',
from_str_fn(check_krate),
default = "\"std\".into()"
)]
krate: String,
#[argh(switch, short = 'a')]
apply: bool,
#[argh(switch, short = 'd')]
disambiguate: bool,
#[argh(switch, short = 'q')]
quiet: bool,
#[argh(positional)]
paths: Vec<PathBuf>,
}
pub fn run(args: Args) {
if args.version {
println!("cargo-intraconv {}", std::env!("CARGO_PKG_VERSION"));
return;
}
if args.paths.is_empty() {
eprintln!("No paths were passed as arguments.");
eprintln!("Usage: target/debug/cargo-intraconv [<paths...>] [--version] [-c <crate>] [-a] [-d] [-q]");
process::exit(1);
}
let display_changes = !args.quiet;
let mut ctx = Context::new(args.krate, args.disambiguate);
for path in args.paths {
if path.as_os_str() == "intraconv" && !path.exists() {
continue;
}
let path_display = path.display().to_string();
let file = match File::open(&path) {
Ok(file) => BufReader::new(file),
Err(err) => {
eprintln!("Failed to open file '{}' for read: {}", &path_display, err);
continue;
}
};
let actions = match ctx.transform_file(file) {
Ok(actions) => actions,
Err(err) => {
eprintln!("Failed to transform file '{}': {}", &path_display, err);
continue;
}
};
let mut updated_content = if args.apply {
String::with_capacity(64 * actions.len())
} else {
String::new()
};
if display_changes && actions.iter().any(|a| !a.is_unchanged()) {
println!("{}", &path_display);
println!("{}\n", "=".repeat(path_display.len()));
}
for l in actions {
if !l.is_unchanged() && display_changes {
println!("{}\n", l);
}
if args.apply {
write!(updated_content, "{}", l.as_new_line()).unwrap();
}
}
if !args.apply {
continue;
}
let mut file = match OpenOptions::new().write(true).truncate(true).open(path) {
Ok(file) => file,
Err(err) => {
eprintln!("Failed to open file '{}' for write: {}", &path_display, err);
continue;
}
};
match write!(file, "{}", updated_content) {
Ok(file) => file,
Err(err) => {
eprintln!("Failed to write to '{}': {}", &path_display, err);
continue;
}
};
}
}
fn check_krate(krate: &str) -> Result<String, String> {
let krate_regex = Regex::new(r"^[\w_]+$").unwrap();
if krate_regex.is_match(krate) {
Ok(krate.into())
} else {
Err(format!(
"The passed crate identifier '{}' is not valid.\n",
krate
))
}
}