From 214e3bc4b675b08ce4df76b1373f4548949e67ee Mon Sep 17 00:00:00 2001
From: Akshay <nerdy@peppe.rs>
Date: Tue, 19 Oct 2021 15:58:46 +0530
Subject: fully flesh out CLI

---
 bin/src/main.rs | 112 +++++++++++++++++++++++---------------------------------
 1 file changed, 46 insertions(+), 66 deletions(-)

(limited to 'bin/src/main.rs')

diff --git a/bin/src/main.rs b/bin/src/main.rs
index ab99aee..b26151d 100644
--- a/bin/src/main.rs
+++ b/bin/src/main.rs
@@ -1,20 +1,28 @@
-use std::{
-    env, fs,
-    path::{Path, PathBuf},
-};
+#![feature(path_try_exists)]
+
+mod config;
+mod err;
+mod traits;
 
-use anyhow::{Context, Result};
-use ariadne::{
-    CharSet, Color, Config as CliConfig, Label, LabelAttach, Report as CliReport,
-    ReportKind as CliReportKind, Source,
+use std::io;
+
+use crate::{
+    err::{LintErr, StatixErr},
+    traits::{LintResult, WriteDiagnostic},
 };
-use lib::{Report, LINTS};
-use rnix::{TextRange, WalkEvent};
 
-fn analyze(source: &str) -> Result<Vec<Report>> {
-    let parsed = rnix::parse(source).as_result()?;
+use clap::Clap;
+use config::{LintConfig, Opts, SubCommand};
+use lib::LINTS;
+use rnix::WalkEvent;
+use vfs::VfsEntry;
 
-    Ok(parsed
+fn analyze<'ρ>(vfs_entry: VfsEntry<'ρ>) -> Result<LintResult, LintErr> {
+    let source = vfs_entry.contents;
+    let parsed = rnix::parse(source)
+        .as_result()
+        .map_err(|e| LintErr::Parse(vfs_entry.file_path.to_path_buf(), e))?;
+    let reports = parsed
         .node()
         .preorder_with_tokens()
         .filter_map(|event| match event {
@@ -27,61 +35,33 @@ fn analyze(source: &str) -> Result<Vec<Report>> {
             _ => None,
         })
         .flatten()
-        .collect())
+        .collect();
+    Ok(LintResult {
+        file_id: vfs_entry.file_id,
+        reports,
+    })
 }
 
-fn print_report(report: Report, file_src: &str, file_path: &Path) -> Result<()> {
-    let range = |at: TextRange| at.start().into()..at.end().into();
-    let src_id = file_path.to_str().unwrap_or("<unknown>");
-    let offset = report
-        .diagnostics
-        .iter()
-        .map(|d| d.at.start().into())
-        .min()
-        .unwrap_or(0usize);
-    report
-        .diagnostics
-        .iter()
-        .fold(
-            CliReport::build(CliReportKind::Warning, src_id, offset)
-                .with_config(
-                    CliConfig::default()
-                        .with_cross_gap(true)
-                        .with_multiline_arrows(false)
-                        .with_label_attach(LabelAttach::Middle)
-                        .with_char_set(CharSet::Unicode),
-                )
-                .with_message(report.note)
-                .with_code(report.code),
-            |cli_report, diagnostic| {
-                cli_report.with_label(
-                    Label::new((src_id, range(diagnostic.at)))
-                        .with_message(&diagnostic.message)
-                        .with_color(Color::Magenta),
-                )
-            },
-        )
-        .finish()
-        .eprint((src_id, Source::from(file_src)))
-        .context("failed to print report to stdout")
-}
-
-fn _main() -> Result<()> {
+fn _main() -> Result<(), StatixErr> {
     // TODO: accept cli args, construct a CLI config with a list of files to analyze
-    let args = env::args();
-    for (file_src, file_path, reports) in args
-        .skip(1)
-        .map(|s| PathBuf::from(&s))
-        .filter(|p| p.is_file())
-        .filter_map(|path| {
-            let s = fs::read_to_string(&path).ok()?;
-            analyze(&s)
-                .map(|analysis_result| (s, path, analysis_result))
-                .ok()
-        })
-    {
-        for r in reports {
-            print_report(r, &file_src, &file_path)?
+    let opts = Opts::parse();
+    match opts.subcmd {
+        Some(SubCommand::Fix(_)) => {}
+        None => {
+            let lint_config = LintConfig::from_opts(opts)?;
+            let vfs = lint_config.vfs()?;
+            let (reports, errors): (Vec<_>, Vec<_>) =
+                vfs.iter().map(analyze).partition(Result::is_ok);
+            let lint_results: Vec<_> = reports.into_iter().map(Result::unwrap).collect();
+            let errors: Vec<_> = errors.into_iter().map(Result::unwrap_err).collect();
+
+            let mut stderr = io::stderr();
+            lint_results.into_iter().for_each(|r| {
+                stderr.write(&r, &vfs).unwrap();
+            });
+            errors.into_iter().for_each(|e| {
+                eprintln!("{}", e);
+            });
         }
     }
     Ok(())
@@ -90,6 +70,6 @@ fn _main() -> Result<()> {
 fn main() {
     match _main() {
         Err(e) => eprintln!("{}", e),
-        _ => {}
+        _ => (),
     }
 }
-- 
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