From d022dc87fa03ab54256711bf1daf9e2030e3f377 Mon Sep 17 00:00:00 2001
From: Lars Wirzenius <liw@liw.fi>
Date: Tue, 2 Oct 2018 11:01:10 +0300
Subject: Add: missing format.rs

---
 src/format.rs | 119 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 119 insertions(+)
 create mode 100644 src/format.rs

diff --git a/src/format.rs b/src/format.rs
new file mode 100644
index 0000000..e2d5f92
--- /dev/null
+++ b/src/format.rs
@@ -0,0 +1,119 @@
+extern crate users;
+extern crate hex;
+
+use std::io;
+use std::fs;
+use std::os::unix::fs::PermissionsExt;
+use std::os::linux::fs::MetadataExt;
+use std::io::prelude::*;
+
+use walkdir::DirEntry;
+use chrono::prelude::DateTime;
+use chrono::{Utc};
+use crypto_hash::{Algorithm, Hasher};
+
+
+pub fn name(e: &DirEntry) -> String {
+    e.path().to_string_lossy().to_string()
+}
+
+
+pub fn mtime(e: &DirEntry) -> String {
+    let meta = e.metadata().unwrap();
+    let mtime = meta.modified().unwrap();
+    let datetime = DateTime::<Utc>::from(mtime);
+    datetime.format("%Y-%m-%d %H:%M:%S.%f %z").to_string()
+}
+
+
+pub fn mode(e: &DirEntry) -> String {
+    let meta = e.metadata().unwrap();
+    let mode = meta.permissions().mode();
+    format!("{:06o}", mode)
+}
+
+
+pub fn inode(e: &DirEntry) -> String {
+    let meta = e.metadata().unwrap();
+    format!("{}", meta.st_ino())
+}
+
+
+pub fn dev(e: &DirEntry) -> String {
+    let meta = e.metadata().unwrap();
+    format!("{}", meta.st_dev())
+}
+
+
+pub fn nlink(e: &DirEntry) -> String {
+    let meta = e.metadata().unwrap();
+    format!("{}", meta.st_nlink())
+}
+
+
+pub fn size(e: &DirEntry) -> String {
+    let meta = e.metadata().unwrap();
+    format!("{}", meta.len())
+}
+
+
+pub fn uid(e: &DirEntry) -> String {
+    let meta = e.metadata().unwrap();
+    format!("{}", meta.st_uid())
+}
+
+
+pub fn gid(e: &DirEntry) -> String {
+    let meta = e.metadata().unwrap();
+    format!("{}", meta.st_gid())
+}
+
+
+pub fn username(e: &DirEntry) -> String {
+    let meta = e.metadata().unwrap();
+    if let Some(u) = users::get_user_by_uid(meta.st_uid()) {
+        format!("{}", u.name())
+    } else {
+        format!("unknown user")
+    }
+}
+
+
+pub fn group(e: &DirEntry) -> String {
+    let meta = e.metadata().unwrap();
+    if let Some(g) = users::get_group_by_gid(meta.st_gid()) {
+        format!("{}", g.name())
+    } else {
+        format!("unknown group")
+    }
+}
+
+
+pub fn sha256(e: &DirEntry) -> String {
+    let mut ok = true;
+    let mut hasher = Hasher::new(Algorithm::SHA256);
+    if let Ok(file) = fs::File::open(e.path()) {
+        let mut reader = io::BufReader::new(file);
+        let mut buf = [0; 1024 * 1024];
+        let mut done = false;
+        while ok && !done{
+            if let Ok(n) = reader.read(&mut buf) {
+                if n == 0 {
+                    done = true;
+                } else if let Err(_) = hasher.write(&buf[0..n]) {
+                    ok = false;
+                }
+            } else {
+                ok = false;
+            }
+        }
+    } else {
+        ok = false;
+    }
+    if ok {
+        let digest = hasher.finish();
+        hex::encode(digest)
+    } else {
+        format!("can't read file")
+    }
+}
-- 
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