# HG changeset patch
# User Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
# Date 1609817310 -3600
# Node ID abcb586566e6e8005adf4c2953be5254ebc2f428
# Parent  daa23a4ff24d93b259a93cb452f14f870567f8aa
formats: Add a dump_dat binary.

diff --git a/formats/src/bin/dump_dat.rs b/formats/src/bin/dump_dat.rs
new file mode 100644
--- /dev/null
+++ b/formats/src/bin/dump_dat.rs
@@ -0,0 +1,31 @@
+use touhou_formats::th06::pbg3::PBG3;
+use std::env;
+use std::path::Path;
+use std::fs::{File, create_dir_all};
+use std::io::{self, BufReader, Write};
+
+fn main() -> io::Result<()> {
+    // Parse arguments.
+    let args: Vec<_> = env::args().collect();
+    if args.len() != 3 {
+        eprintln!("Usage: {} <DAT file> <output dir>", args[0]);
+        std::process::exit(1);
+    }
+
+    let filename = Path::new(&args[1]);
+    let output_filename = Path::new(&args[2]);
+
+    let file = File::open(filename)?;
+    let file = BufReader::new(file);
+    let mut pbg3 = PBG3::from_file(file)?;
+    let list = pbg3.list_files().cloned().collect::<Vec<_>>();
+
+    create_dir_all(output_filename)?;
+    for filename in list {
+        let data = pbg3.get_file(&filename, true)?;
+        let mut output = File::create(output_filename.join(filename))?;
+        output.write(&data)?;
+    }
+
+    Ok(())
+}