feat: cmd info works

src/cmd_info.rs

@@ -0,0 +1,34 @@
+use std::fs::File;
+use std::path::PathBuf;
+use rust_util::{information, opt_result, simple_error, XResult};
+use crate::file;
+
+pub fn info(path: PathBuf) -> XResult<()> {
+    let path_display = format!("{}", path.display());
+    let mut file_in = opt_result!(File::open(path), "Open file: {} failed: {}", &path_display);
+    let meta = opt_result!(file::read_tiny_encrypt_meta(&mut file_in), "Read file: {}, failed: {}", &path_display);
+    // println!("{}", serde_json::to_string_pretty(&meta).expect("SHOULD NOT HAPPEN"));
+
+    let mut infos = vec![];
+    infos.push("Tiny Encrypt File Info".to_string());
+    infos.push(format!("File..............: {}", path_display));
+    infos.push(format!("File size.........: {} bytes", meta.file_length));
+    infos.push(format!("Enc file summary..: Version: {}, Agent: {}", meta.version, meta.user_agent));
+    infos.push(format!("Last modified.....: {}", meta.file_last_modified));
+    infos.push(format!("Enc file created..: {}", meta.created));
+    infos.push(format!("Envelops..........: KMS: {}, PGP: {}",
+                       to_yes_or_no(&meta.envelop),
+                       to_yes_or_no(&meta.pgp_envelop)
+    ));
+    meta.pgp_fingerprint.map(|fingerprint| {
+        infos.push(format!("PGP fingerprint...: {}", fingerprint));
+    });
+    infos.push(format!("Encrypted comment.: {}", to_yes_or_no(&meta.encrypted_comment)));
+
+    information!("{}\n", infos.join("\n"));
+    Ok(())
+}
+
+fn to_yes_or_no(opt: &Option<String>) -> String {
+    opt.as_ref().map(|_| "YES".to_string()).unwrap_or_else(|| "NO".to_string())
+}