a4e667de10
Single-commit clean baseline after security scrub of niche-tells, project codenames, internal jargon, and contributor-email leaks. Contents: - 100 Rust crates (_primitives/_rust/) - 37 agent manifests (_manifests/) + generated specs (_generated/) - 67 user-invocable skills (skills/) - 33 hooks (hooks/) - Composition blocks (_blocks/) - Documentation (docs/, README.md) - TS adapter packages (_ts_packages/) - Assembler (_assembler/) - Roles (_roles/) - Templates (_templates/) - Forgejo CI (.forgejo/) Author: Denis Parfionovich <info@greendragon.info> License: see LICENSE.
83 lines
2.3 KiB
Rust
83 lines
2.3 KiB
Rust
//! visual-diff — pixel-level PNG comparator for WYSIWYD drift detection.
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//!
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//! USAGE
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//! visual-diff <a.png> <b.png> [--out diff.png] [--threshold 5]
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//!
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//! Exit codes:
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//! 0 images equal (within threshold)
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//! 1 usage error
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//! 2 images differ beyond threshold
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//!
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//! Prints percentage of mismatched pixels to stdout. Writes a red-overlay
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//! diff PNG to <out> (default: ./diff.png) when images differ.
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mod diff;
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use std::env;
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use std::path::PathBuf;
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use std::process::ExitCode;
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fn main() -> ExitCode {
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let args: Vec<String> = env::args().skip(1).collect();
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if args.iter().any(|a| a == "-h" || a == "--help") {
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print_help();
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return ExitCode::SUCCESS;
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}
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let positional: Vec<&String> = args.iter().filter(|a| !a.starts_with("--")).collect();
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if positional.len() < 2 {
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eprintln!("visual-diff: need <a.png> <b.png>");
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print_help();
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return ExitCode::from(1);
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}
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let a = PathBuf::from(positional[0]);
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let b = PathBuf::from(positional[1]);
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let out = flag(&args, "--out")
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.map(PathBuf::from)
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.unwrap_or_else(|| PathBuf::from("diff.png"));
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let threshold: f64 = flag(&args, "--threshold")
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.and_then(|s| s.parse().ok())
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.unwrap_or(1.0);
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match diff::compare(&a, &b, &out) {
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Ok(report) => {
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println!("{:.4}% differ ({} px of {})", report.pct, report.diff_px, report.total_px);
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if report.diff_png_written {
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eprintln!("wrote diff: {}", out.display());
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}
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if report.pct > threshold {
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ExitCode::from(2)
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} else {
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ExitCode::SUCCESS
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}
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}
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Err(e) => {
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eprintln!("visual-diff: {e}");
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ExitCode::from(1)
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}
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}
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}
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fn print_help() {
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println!(
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"visual-diff — pixel-level PNG comparator
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USAGE
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visual-diff <a.png> <b.png> [--out diff.png] [--threshold 5]
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OPTIONS
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--out FILE write red-overlay diff PNG (default: diff.png)
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--threshold PCT fail (exit 2) if mismatch exceeds PCT%% (default: 1.0)
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EXIT
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0 equal (within threshold)
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1 usage / IO error
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2 differ beyond threshold"
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);
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}
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fn flag<'a>(args: &'a [String], name: &str) -> Option<&'a str> {
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args.windows(2).find(|w| w[0] == name).map(|w| w[1].as_str())
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}
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