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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
commit | 698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch) | |
tree | 173a775858bd501c378080a10dca74132f05bc50 /vendor/sha-1-0.8.2/examples/sha1sum.rs | |
parent | Initial commit. (diff) | |
download | rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip |
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | vendor/sha-1-0.8.2/examples/sha1sum.rs | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/vendor/sha-1-0.8.2/examples/sha1sum.rs b/vendor/sha-1-0.8.2/examples/sha1sum.rs new file mode 100644 index 000000000..bde1ab4f6 --- /dev/null +++ b/vendor/sha-1-0.8.2/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(), "-"); + } +} |