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use std::{
borrow::Cow,
fmt,
path::{Path, PathBuf},
str::FromStr,
vec,
};
use derive_more::{Display, Error};
use futures::stream;
use gherkin::GherkinEnv;
use globwalk::{GlobWalker, GlobWalkerBuilder};
use structopt::StructOpt;
use crate::feature::Ext as _;
use super::{Error as ParseError, Parser};
#[cfg_attr(doc, doc = "CLI options of a [`Basic`] [`Parser`].")]
#[cfg_attr(
not(doc),
allow(missing_docs, clippy::missing_docs_in_private_items)
)]
#[derive(Debug, StructOpt)]
pub struct Cli {
#[structopt(long = "input", short = "i", name = "glob")]
pub features: Option<Walker>,
}
#[derive(Clone, Debug, Default)]
pub struct Basic {
language: Option<Cow<'static, str>>,
}
impl<I: AsRef<Path>> Parser<I> for Basic {
type Cli = Cli;
type Output =
stream::Iter<vec::IntoIter<Result<gherkin::Feature, ParseError>>>;
fn parse(self, path: I, cli: Self::Cli) -> Self::Output {
let walk = |walker: GlobWalker| {
walker
.filter_map(Result::ok)
.filter(|file| {
file.path()
.extension()
.map(|ext| ext == "feature")
.unwrap_or_default()
})
.map(|file| {
let env = self
.language
.as_ref()
.and_then(|l| GherkinEnv::new(l).ok())
.unwrap_or_default();
gherkin::Feature::parse_path(file.path(), env)
})
.collect::<Vec<_>>()
};
let get_path = || {
let path = path.as_ref();
path.canonicalize()
.or_else(|_| {
let mut buf = PathBuf::from(env!("CARGO_MANIFEST_DIR"));
buf.push(
path.strip_prefix("/")
.or_else(|_| path.strip_prefix("./"))
.unwrap_or(path),
);
buf.as_path().canonicalize()
})
.map_err(|e| gherkin::ParseFileError::Reading {
path: path.to_path_buf(),
source: e,
})
};
let features = || {
let features = if let Some(walker) = cli.features {
walk(walker.0)
} else {
let path = match get_path() {
Ok(path) => path,
Err(e) => return vec![Err(e.into())],
};
if path.is_file() {
let env = self
.language
.as_ref()
.and_then(|l| GherkinEnv::new(l).ok())
.unwrap_or_default();
vec![gherkin::Feature::parse_path(path, env)]
} else {
let walker = GlobWalkerBuilder::new(path, "*.feature")
.case_insensitive(true)
.build()
.unwrap_or_else(|e| {
unreachable!("GlobWalkerBuilder panicked: {}", e)
});
walk(walker)
}
};
features
.into_iter()
.map(|f| match f {
Ok(f) => f.expand_examples().map_err(ParseError::from),
Err(e) => Err(e.into()),
})
.collect()
};
stream::iter(features().into_iter())
}
}
impl Basic {
#[must_use]
pub const fn new() -> Self {
Self { language: None }
}
pub fn language(
mut self,
name: impl Into<Cow<'static, str>>,
) -> Result<Self, UnsupportedLanguageError> {
let name = name.into();
if !gherkin::is_language_supported(&name) {
return Err(UnsupportedLanguageError(name));
}
self.language = Some(name);
Ok(self)
}
}
#[derive(Debug, Display, Error)]
#[display(fmt = "Language {} isn't supported", _0)]
pub struct UnsupportedLanguageError(
#[error(not(source))] pub Cow<'static, str>,
);
pub struct Walker(GlobWalker);
impl fmt::Debug for Walker {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
f.debug_struct("Walker").finish_non_exhaustive()
}
}
impl FromStr for Walker {
type Err = globwalk::GlobError;
fn from_str(s: &str) -> Result<Self, Self::Err> {
globwalk::glob(s).map(Self)
}
}