Adding upstream version 86.0.1.upstream/86.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 49 insertions, 0 deletions

diff --git a/third_party/rust/sha-1/examples/sha1sum.rs b/third_party/rust/sha-1/examples/sha1sum.rs
new file mode 100644
index 0000000000..bde1ab4f60
--- /dev/null
+++ b/third_party/rust/sha-1/examples/sha1sum.rs
@@ -0,0 +1,49 @@
+extern crate sha1;
+
+use sha1::{Sha1, Digest};
+use std::env;
+use std::fs;
+use std::io::{self, Read};
+
+const BUFFER_SIZE: usize = 1024;
+
+/// Print digest result as hex string and name pair
+fn print_result(sum: &[u8], name: &str) {
+    for byte in sum {
+        print!("{:02x}", byte);
+    }
+    println!("\t{}", name);
+}
+
+/// Compute digest value for given `Reader` and print it
+/// On any error simply return without doing anything
+fn process<D: Digest + Default, R: Read>(reader: &mut R, name: &str) {
+    let mut sh = D::default();
+    let mut buffer = [0u8; BUFFER_SIZE];
+    loop {
+        let n = match reader.read(&mut buffer) {
+            Ok(n) => n,
+            Err(_) => return,
+        };
+        sh.input(&buffer[..n]);
+        if n == 0 || n < BUFFER_SIZE {
+            break;
+        }
+    }
+    print_result(&sh.result(), name);
+}
+
+fn main() {
+    let args = env::args();
+    // Process files listed in command line arguments one by one
+    // If no files provided process input from stdin
+    if args.len() > 1 {
+        for path in args.skip(1) {
+            if let Ok(mut file) = fs::File::open(&path) {
+                process::<Sha1, _>(&mut file, &path);
+            }
+        }
+    } else {
+        process::<Sha1, _>(&mut io::stdin(), "-");
+    }
+}