scanner: Add post-scan progress analysis

scanner/src/analyze.rs

@@ -0,0 +1,101 @@
+//! Post-scan analysis
+
+use crate::cli_options::AnalyzeOpt;
+use crate::file_results::{FileResults, Step};
+use std::cmp::max;
+use std::fs::File;
+
+/// Generate and print statistics related to a scan's results
+pub fn analyze(results: impl Iterator<Item = FileResults>) {
+    let mut total = 0;
+    let mut start = 0;
+    let mut read = 0;
+    let mut decompress = 0;
+    let mut parse = 0;
+    let mut execute = 0;
+    let mut complete = 0;
+
+    for result in results {
+        total += 1;
+
+        match result.progress {
+            Step::Start => start += 1,
+            Step::Read => read += 1,
+            Step::Decompress => decompress += 1,
+            Step::Parse => parse += 1,
+            Step::Execute => execute += 1,
+            Step::Complete => complete += 1,
+        }
+    }
+
+    println!("Scanned {} swf files.", total);
+
+    let digits = max(
+        (start as f64).log10().ceil() as usize,
+        max(
+            (read as f64).log10().ceil() as usize,
+            max(
+                (decompress as f64).log10().ceil() as usize,
+                max(
+                    (parse as f64).log10().ceil() as usize,
+                    max(
+                        (execute as f64).log10().ceil() as usize,
+                        (complete as f64).log10().ceil() as usize,
+                    ),
+                ),
+            ),
+        ),
+    ) + 4;
+
+    println!();
+
+    if start > 0 {
+        println!(
+            "{:>digits$} movies panicked or crashed the scanner",
+            start,
+            digits = digits
+        );
+    }
+
+    println!(
+        "{:>digits$} movies failed when reading",
+        read,
+        digits = digits
+    );
+    println!(
+        "{:>digits$} movies failed to decompress",
+        decompress,
+        digits = digits
+    );
+    println!("{:>digits$} movies failed to parse", parse, digits = digits);
+    println!(
+        "{:>digits$} movies failed to execute",
+        execute,
+        digits = digits
+    );
+    println!(
+        "{:>digits$} movies completed without errors",
+        complete,
+        digits = digits
+    );
+}
+
+pub fn analyze_main(opt: AnalyzeOpt) -> Result<(), std::io::Error> {
+    let file = File::open(opt.input_path)?;
+    let reader = csv::Reader::from_reader(file);
+
+    analyze(reader.into_deserialize::<FileResults>().map(|r| {
+        match r {
+            Ok(fr) => fr,
+            Err(e) => {
+                // Treat unparseable CSV rows as a scanner panic
+                FileResults {
+                    error: Some(format!("{}", e)),
+                    ..FileResults::default()
+                }
+            }
+        }
+    }));
+
+    Ok(())
+}

scanner/src/cli_options.rs

@@ -15,6 +15,9 @@ pub enum Mode {
     /// Scan an entire directory for SWF files
     Scan(ScanOpt),
 
+    /// Analyze a previously executed scan and compile statistics on it
+    Analyze(AnalyzeOpt),
+
     /// Execute a single SWF file and generate a machine-readable report
     ExecuteReport(ExecuteReportOpt),
 }
@@ -34,6 +37,13 @@ pub struct ScanOpt {
     pub ignore: Vec<String>,
 }
 
+#[derive(Clap, Debug)]
+pub struct AnalyzeOpt {
+    /// The CSV file to reanalyze
+    #[clap(name = "input", parse(from_os_str))]
+    pub input_path: PathBuf,
+}
+
 #[derive(Clap, Debug)]
 pub struct ExecuteReportOpt {
     /// The single SWF file to parse and run

scanner/src/file_results.rs

@@ -8,13 +8,13 @@ use serde::{Deserialize, Deserializer, Serialize, Serializer};
 use std::fmt;
 use std::fmt::Write;
 
-#[derive(Serialize, Deserialize, Debug)]
+#[derive(Serialize, Deserialize, Debug, Clone)]
 pub enum AvmType {
     Avm1,
     Avm2,
 }
 
-#[derive(Serialize, Deserialize, Debug)]
+#[derive(Serialize, Deserialize, Debug, Clone)]
 pub enum Compression {
     None,
     Zlib,
@@ -32,7 +32,7 @@ impl From<swf::Compression> for Compression {
 }
 
 /// A particular step in the scanner process.
-#[derive(Serialize, Deserialize, Debug)]
+#[derive(Serialize, Deserialize, Debug, Clone)]
 pub enum Step {
     /// Nothing has been done yet.
     ///
@@ -57,7 +57,7 @@ pub enum Step {
 }
 
 /// The result of a single scan.
-#[derive(Serialize, Deserialize, Debug)]
+#[derive(Serialize, Deserialize, Debug, Clone)]
 pub struct FileResults {
     /// The file name scanned (including path).
     pub name: String,

scanner/src/main.rs

@@ -1,8 +1,10 @@
+use crate::analyze::analyze_main;
 use crate::cli_options::{Mode, Opt};
 use crate::execute::execute_report_main;
 use crate::scan::scan_main;
 use clap::Clap;
 
+mod analyze;
 mod cli_options;
 mod execute;
 mod file_results;
@@ -15,6 +17,7 @@ fn main() -> Result<(), std::io::Error> {
 
     match opt.mode {
         Mode::Scan(scan_opt) => scan_main(scan_opt),
+        Mode::Analyze(analyze_opt) => analyze_main(analyze_opt),
         Mode::ExecuteReport(exeute_report_opt) => {
             if execute_report_main(exeute_report_opt).is_err() {
                 // Do nothing.

scanner/src/scan.rs

@@ -1,5 +1,6 @@
 //! Main/scanner process impls
 
+use crate::analyze::analyze;
 use crate::cli_options::ScanOpt;
 use crate::file_results::FileResults;
 use crate::ser_bridge::SerBridge;
@@ -119,8 +120,6 @@ pub fn scan_main(opt: ScanOpt) -> Result<(), std::io::Error> {
     let binary_path = env::current_exe()?;
     let to_scan = find_files(&opt.input_path, &opt.ignore);
     let total = to_scan.len() as u64;
-    let mut good = 0;
-    let mut bad = 0;
     let progress = ProgressBar::new(total);
     let mut writer = csv::Writer::from_path(opt.output_path.clone())?;
 
@@ -169,22 +168,18 @@ pub fn scan_main(opt: ScanOpt) -> Result<(), std::io::Error> {
 
             result
         })
-        .ser_bridge();
+        .ser_bridge()
+        .map(|result| {
+            if let Err(e) = writer.serialize(result.clone()) {
+                eprintln!("{}", e);
+            };
 
-    for result in result_iter {
-        if result.error.is_none() {
-            good += 1;
-        } else {
-            bad += 1;
-        }
+            result
+        });
 
-        writer.serialize(result)?;
-    }
+    progress.finish();
 
-    progress.finish_with_message(format!(
-        "Scanned {} swf files. {} successfully parsed, {} encountered errors",
-        total, good, bad
-    ));
+    analyze(result_iter);
 
     Ok(())
 }