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| 1 | +use std::{ |
| 2 | + fs::File, |
| 3 | + io::{self, Write}, |
| 4 | + path::{Path, PathBuf}, |
| 5 | + process::Command, |
| 6 | +}; |
| 7 | + |
| 8 | +use codeowners::config::Config as OwnershipConfig; |
| 9 | +use codeowners::runner::{RunConfig, Runner}; |
| 10 | +use codeowners::ownership::{fast, FileOwner}; |
| 11 | +use ignore::WalkBuilder; |
| 12 | +use serde_yaml; |
| 13 | + |
| 14 | +fn main() { |
| 15 | + let project_root = std::env::args() |
| 16 | + .nth(1) |
| 17 | + .expect("usage: compare_for_file <absolute_project_root>"); |
| 18 | + let project_root = PathBuf::from(project_root); |
| 19 | + if !project_root.is_absolute() { |
| 20 | + eprintln!("Project root must be absolute"); |
| 21 | + std::process::exit(2); |
| 22 | + } |
| 23 | + |
| 24 | + let codeowners_file_path = project_root.join(".github/CODEOWNERS"); |
| 25 | + let config_path = project_root.join("config/code_ownership.yml"); |
| 26 | + |
| 27 | + let run_config = RunConfig { |
| 28 | + project_root: project_root.clone(), |
| 29 | + codeowners_file_path, |
| 30 | + config_path: config_path.clone(), |
| 31 | + no_cache: false, |
| 32 | + }; |
| 33 | + |
| 34 | + // Build the original, accurate-but-slower runner once |
| 35 | + let runner = match Runner::new(&run_config) { |
| 36 | + Ok(r) => r, |
| 37 | + Err(e) => { |
| 38 | + eprintln!("Failed to initialize Runner: {}", e); |
| 39 | + std::process::exit(1); |
| 40 | + } |
| 41 | + }; |
| 42 | + |
| 43 | + // Load config once for the optimized path |
| 44 | + let config_file = match File::open(&config_path) { |
| 45 | + Ok(f) => f, |
| 46 | + Err(e) => { |
| 47 | + eprintln!("Can't open config file {}: {}", config_path.display(), e); |
| 48 | + std::process::exit(1); |
| 49 | + } |
| 50 | + }; |
| 51 | + let optimized_config: OwnershipConfig = match serde_yaml::from_reader(config_file) { |
| 52 | + Ok(c) => c, |
| 53 | + Err(e) => { |
| 54 | + eprintln!("Can't parse config file {}: {}", config_path.display(), e); |
| 55 | + std::process::exit(1); |
| 56 | + } |
| 57 | + }; |
| 58 | + |
| 59 | + let mut total_files: usize = 0; |
| 60 | + let mut diff_count: usize = 0; |
| 61 | + |
| 62 | + // Prefer tracked files from git; fall back to walking the FS if git is unavailable |
| 63 | + let tracked_files_output = Command::new("git") |
| 64 | + .arg("-C") |
| 65 | + .arg(&project_root) |
| 66 | + .arg("ls-files") |
| 67 | + .arg("-z") |
| 68 | + .output(); |
| 69 | + |
| 70 | + match tracked_files_output { |
| 71 | + Ok(output) if output.status.success() => { |
| 72 | + let bytes = output.stdout; |
| 73 | + for rel in bytes.split(|b| *b == 0u8) { |
| 74 | + if rel.is_empty() { continue; } |
| 75 | + let rel_str = match std::str::from_utf8(rel) { Ok(s) => s, Err(_) => continue }; |
| 76 | + let abs_path = project_root.join(rel_str); |
| 77 | + // Only process regular files that currently exist |
| 78 | + if !abs_path.is_file() { continue; } |
| 79 | + |
| 80 | + total_files += 1; |
| 81 | + let original = run_original(&runner, &abs_path); |
| 82 | + let optimized = run_optimized(&project_root, &optimized_config, &abs_path); |
| 83 | + |
| 84 | + if original != optimized { |
| 85 | + diff_count += 1; |
| 86 | + println!("\n==== {} ====", abs_path.display()); |
| 87 | + println!("ORIGINAL:\n{}", original); |
| 88 | + println!("OPTIMIZED:\n{}", optimized); |
| 89 | + let _ = io::stdout().flush(); |
| 90 | + } |
| 91 | + |
| 92 | + if total_files % 1000 == 0 { |
| 93 | + eprintln!( |
| 94 | + "Processed {} files... diffs so far: {}", |
| 95 | + total_files, diff_count |
| 96 | + ); |
| 97 | + } |
| 98 | + } |
| 99 | + } |
| 100 | + _ => { |
| 101 | + eprintln!("git ls-files failed; falling back to filesystem walk (untracked files may be included)"); |
| 102 | + let walker = WalkBuilder::new(&project_root) |
| 103 | + .hidden(false) |
| 104 | + .git_ignore(true) |
| 105 | + .git_exclude(true) |
| 106 | + .follow_links(false) |
| 107 | + .build(); |
| 108 | + |
| 109 | + for result in walker { |
| 110 | + let entry = match result { |
| 111 | + Ok(e) => e, |
| 112 | + Err(err) => { |
| 113 | + eprintln!("walk error: {}", err); |
| 114 | + continue; |
| 115 | + } |
| 116 | + }; |
| 117 | + if !entry.file_type().map(|t| t.is_file()).unwrap_or(false) { |
| 118 | + continue; |
| 119 | + } |
| 120 | + let path = entry.path(); |
| 121 | + total_files += 1; |
| 122 | + |
| 123 | + let original = run_original(&runner, path); |
| 124 | + let optimized = run_optimized(&project_root, &optimized_config, path); |
| 125 | + |
| 126 | + if original != optimized { |
| 127 | + diff_count += 1; |
| 128 | + println!("\n==== {} ====", path.display()); |
| 129 | + println!("ORIGINAL:\n{}", original); |
| 130 | + println!("OPTIMIZED:\n{}", optimized); |
| 131 | + let _ = io::stdout().flush(); |
| 132 | + } |
| 133 | + |
| 134 | + if total_files % 1000 == 0 { |
| 135 | + eprintln!( |
| 136 | + "Processed {} files... diffs so far: {}", |
| 137 | + total_files, diff_count |
| 138 | + ); |
| 139 | + } |
| 140 | + } |
| 141 | + } |
| 142 | + } |
| 143 | + |
| 144 | + println!("Checked {} files. Diffs: {}", total_files, diff_count); |
| 145 | + if diff_count > 0 { |
| 146 | + std::process::exit(3); |
| 147 | + } |
| 148 | +} |
| 149 | + |
| 150 | +fn run_original(runner: &Runner, file_path: &Path) -> String { |
| 151 | + let result = runner.for_file(&file_path.to_string_lossy()); |
| 152 | + if !result.validation_errors.is_empty() { |
| 153 | + return result.validation_errors.join("\n"); |
| 154 | + } |
| 155 | + if !result.io_errors.is_empty() { |
| 156 | + return format!("IO_ERROR: {}", result.io_errors.join(" | ")); |
| 157 | + } |
| 158 | + result.info_messages.join("\n") |
| 159 | +} |
| 160 | + |
| 161 | +fn run_optimized(project_root: &Path, config: &OwnershipConfig, file_path: &Path) -> String { |
| 162 | + let owners: Vec<FileOwner> = match fast::find_file_owners(project_root, config, file_path) { |
| 163 | + Ok(v) => v, |
| 164 | + Err(e) => return format!("IO_ERROR: {}", e), |
| 165 | + }; |
| 166 | + match owners.len() { |
| 167 | + 0 => format!("{}", FileOwner::default()), |
| 168 | + 1 => format!("{}", owners[0]), |
| 169 | + _ => { |
| 170 | + let mut lines = vec!["Error: file is owned by multiple teams!".to_string()]; |
| 171 | + for owner in owners { |
| 172 | + lines.push(format!("\n{}", owner)); |
| 173 | + } |
| 174 | + lines.join("\n") |
| 175 | + } |
| 176 | + } |
| 177 | +} |
| 178 | + |
| 179 | + |
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