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// We have some long regex literals, so:
// ignore-tidy-linelength
use docopt::Docopt;
use serde::Deserialize;
use std::io::BufRead;
use std::{fs, io, path};
fn main() {
let args: Args = Docopt::new(USAGE)
.and_then(|d| d.deserialize())
.unwrap_or_else(|e| e.exit());
let src_dir = &path::Path::new(&args.arg_src_dir);
let found_errs = walkdir::WalkDir::new(src_dir)
.min_depth(1)
.into_iter()
.map(|entry| match entry {
Ok(entry) => entry,
Err(err) => {
eprintln!("{:?}", err);
std::process::exit(911)
}
})
.map(|entry| {
let path = entry.path();
if is_file_of_interest(path) {
let err_vec = lint_file(path);
for err in &err_vec {
match *err {
LintingError::LineOfInterest(line_num, ref line) => {
eprintln!(
"{}:{}\t{}",
path.display(),
line_num,
line
)
}
LintingError::UnableToOpenFile => {
eprintln!("Unable to open {}.", path.display())
}
}
}
!err_vec.is_empty()
} else {
false
}
})
.collect::<Vec<_>>()
.iter()
.any(|result| *result);
if found_errs {
std::process::exit(1)
} else {
std::process::exit(0)
}
}
const USAGE: &str = "
counter
Usage:
lfp <src-dir>
lfp (-h | --help)
Options:
-h --help Show this screen.
";
#[derive(Debug, Deserialize)]
struct Args {
arg_src_dir: String,
}
fn lint_file(path: &path::Path) -> Vec<LintingError> {
match fs::File::open(path) {
Ok(file) => lint_lines(io::BufReader::new(&file).lines()),
Err(_) => vec![LintingError::UnableToOpenFile],
}
}
fn lint_lines<I>(lines: I) -> Vec<LintingError>
where
I: Iterator<Item = io::Result<String>>,
{
lines
.enumerate()
.map(|(line_num, line)| {
let raw_line = line.unwrap();
if is_line_of_interest(&raw_line) {
Err(LintingError::LineOfInterest(line_num, raw_line))
} else {
Ok(())
}
})
.filter(|result| result.is_err())
.map(|result| result.unwrap_err())
.collect()
}
fn is_file_of_interest(path: &path::Path) -> bool {
path.extension().map_or(false, |ext| ext == "md")
}
fn is_line_of_interest(line: &str) -> bool {
line.split_whitespace().any(|sub_string| {
sub_string.contains("file://")
&& !sub_string.contains("file:///projects/")
})
}
#[derive(Debug)]
enum LintingError {
UnableToOpenFile,
LineOfInterest(usize, String),
}
#[cfg(test)]
mod tests {
use std::path;
#[test]
fn lint_file_returns_a_vec_with_errs_when_lines_of_interest_are_found() {
let string = r#"
$ cargo run
Compiling guessing_game v0.1.0 (file:///home/you/projects/guessing_game)
Running `target/guessing_game`
Guess the number!
The secret number is: 61
Please input your guess.
10
You guessed: 10
Too small!
Please input your guess.
99
You guessed: 99
Too big!
Please input your guess.
foo
Please input your guess.
61
You guessed: 61
You win!
$ cargo run
Compiling guessing_game v0.1.0 (file:///home/you/projects/guessing_game)
Running `target/debug/guessing_game`
Guess the number!
The secret number is: 7
Please input your guess.
4
You guessed: 4
$ cargo run
Running `target/debug/guessing_game`
Guess the number!
The secret number is: 83
Please input your guess.
5
$ cargo run
Compiling guessing_game v0.1.0 (file:///home/you/projects/guessing_game)
Running `target/debug/guessing_game`
Hello, world!
"#;
let raw_lines = string.to_string();
let lines = raw_lines.lines().map(|line| Ok(line.to_string()));
let result_vec = super::lint_lines(lines);
assert!(!result_vec.is_empty());
assert_eq!(3, result_vec.len());
}
#[test]
fn lint_file_returns_an_empty_vec_when_no_lines_of_interest_are_found() {
let string = r#"
$ cargo run
Compiling guessing_game v0.1.0 (file:///projects/guessing_game)
Running `target/guessing_game`
Guess the number!
The secret number is: 61
Please input your guess.
10
You guessed: 10
Too small!
Please input your guess.
99
You guessed: 99
Too big!
Please input your guess.
foo
Please input your guess.
61
You guessed: 61
You win!
"#;
let raw_lines = string.to_string();
let lines = raw_lines.lines().map(|line| Ok(line.to_string()));
let result_vec = super::lint_lines(lines);
assert!(result_vec.is_empty());
}
#[test]
fn is_file_of_interest_returns_false_when_the_path_is_a_directory() {
let uninteresting_fn = "src/img";
assert!(!super::is_file_of_interest(path::Path::new(
uninteresting_fn
)));
}
#[test]
fn is_file_of_interest_returns_false_when_the_filename_does_not_have_the_md_extension(
) {
let uninteresting_fn = "src/img/foo1.png";
assert!(!super::is_file_of_interest(path::Path::new(
uninteresting_fn
)));
}
#[test]
fn is_file_of_interest_returns_true_when_the_filename_has_the_md_extension()
{
let interesting_fn = "src/ch01-00-introduction.md";
assert!(super::is_file_of_interest(path::Path::new(interesting_fn)));
}
#[test]
fn is_line_of_interest_does_not_report_a_line_if_the_line_contains_a_file_url_which_is_directly_followed_by_the_project_path(
) {
let sample_line =
"Compiling guessing_game v0.1.0 (file:///projects/guessing_game)";
assert!(!super::is_line_of_interest(sample_line));
}
#[test]
fn is_line_of_interest_reports_a_line_if_the_line_contains_a_file_url_which_is_not_directly_followed_by_the_project_path(
) {
let sample_line = "Compiling guessing_game v0.1.0 (file:///home/you/projects/guessing_game)";
assert!(super::is_line_of_interest(sample_line));
}
}
|
