src/tools/format.rs: move output rendering code to this new file

src/tools/format.rs

@@ -0,0 +1,43 @@
+use failure::*;
+use serde_json::Value;
+use chrono::{Local, TimeZone};
+
+pub fn strip_server_file_expenstion(name: &str) -> String {
+
+    if name.ends_with(".didx") || name.ends_with(".fidx") || name.ends_with(".blob") {
+        name[..name.len()-5].to_owned()
+    } else {
+        name.to_owned() // should not happen
+    }
+}
+
+pub fn render_backup_file_list(files: &[String]) -> String {
+    let mut files: Vec<String> = files.iter()
+        .map(|v| strip_server_file_expenstion(&v))
+        .collect();
+
+    files.sort();
+
+    super::join(&files, ' ')
+}
+
+pub fn render_epoch(value: &Value, _record: &Value) -> Result<String, Error> {
+    if value.is_null() { return Ok(String::new()); }
+    let text = match value.as_i64() {
+        Some(epoch) => {
+            Local.timestamp(epoch, 0).format("%c").to_string()
+        }
+        None => {
+            value.to_string()
+        }
+    };
+    Ok(text)
+}
+
+pub fn render_task_status(value: &Value, record: &Value) -> Result<String, Error> {
+    if record["endtime"].is_null() {
+        Ok(value.as_str().unwrap_or("running").to_string())
+    } else {
+        Ok(value.as_str().unwrap_or("unknown").to_string())
+    }
+}