add snapshots command

Cargo.toml

@@ -22,4 +22,5 @@ boomphf = "0.5"
 walkdir = "2"
 # commands
 clap = { version = "3", features = ["derive"] }
+prettytable-rs = "0.8"
 

src/commands/mod.rs

@@ -6,6 +6,7 @@ use crate::repo;
 
 mod cat;
 mod list;
+mod snapshots;
 
 #[derive(Parser)]
 #[clap(about, version)]
@@ -29,6 +30,9 @@ enum Command {
 
     /// cat files
     Cat(cat::Opts),
+
+    /// cat files
+    Snapshots(snapshots::Opts),
 }
 
 pub fn execute() -> Result<()> {
@@ -41,5 +45,6 @@ pub fn execute() -> Result<()> {
     match args.command {
         Command::List(opts) => list::execute(&be, opts),
         Command::Cat(opts) => cat::execute(&be, &dbe, opts),
+        Command::Snapshots(opts) => snapshots::execute(&dbe, opts),
     }
 }

src/commands/snapshots.rs

@@ -0,0 +1,28 @@
+use anyhow::Result;
+use clap::Parser;
+use prettytable::{cell, format, row, Table};
+
+use crate::backend::{FileType, ReadBackend};
+use crate::repo::SnapshotFile;
+
+#[derive(Parser)]
+pub(super) struct Opts {}
+
+pub(super) fn execute(be: &impl ReadBackend, _opts: Opts) -> Result<()> {
+    let mut table = Table::new();
+    table.set_titles(row!["ID", "Time", "Host", "Tags", "Paths"]);
+    table.set_format(*format::consts::FORMAT_NO_BORDER_LINE_SEPARATOR);
+
+    for id in be.list(FileType::Snapshot)? {
+        let sn = SnapshotFile::from_backend(be, id)?;
+        let paths = sn
+            .paths
+            .iter()
+            .map(|p| p.to_string_lossy() + "\n")
+            .collect::<String>();
+        table.add_row(row![id, sn.time, sn.hostname, "", paths,]);
+    }
+    table.printstd();
+
+    Ok(())
+}

src/repo/snapshot.rs

@@ -1,28 +1,38 @@
+use anyhow::Result;
+use chrono::{DateTime, Local};
+use serde::{Deserialize, Serialize};
 use std::path::PathBuf;
 
 use super::Id;
-use chrono::{DateTime, Local};
-use serde::{Deserialize, Serialize};
+use crate::backend::{FileType, ReadBackend};
 
 #[derive(Debug, Serialize, Deserialize)]
 pub struct SnapshotFile {
-    time: DateTime<Local>,
-    tree: Id,
-    paths: Vec<PathBuf>,
+    pub time: DateTime<Local>,
+    pub tree: Id,
+    pub paths: Vec<PathBuf>,
     #[serde(default)]
-    hostname: String,
+    pub hostname: String,
     #[serde(default)]
-    username: String,
+    pub username: String,
     #[serde(default)]
-    uid: u32,
+    pub uid: u32,
     #[serde(default)]
-    gid: u32,
+    pub gid: u32,
     #[serde(default)]
-    tags: TagList,
+    pub tags: TagList,
+}
+
+impl SnapshotFile {
+    /// Get an IndexFile from the backend
+    pub fn from_backend<B: ReadBackend>(be: &B, id: Id) -> Result<Self> {
+        let data = be.read_full(FileType::Snapshot, id)?;
+        Ok(serde_json::from_slice(&data)?)
+    }
 }
 
 #[derive(Default, Debug, Serialize, Deserialize)]
-struct TagList(Vec<Tag>);
+pub struct TagList(Vec<Tag>);
 
 #[derive(Default, Debug, Serialize, Deserialize)]
 pub struct Tag(String);