[pve-devel] [PATCH installer v3 16/20] auto-installer: answer: factor out answer file reading into function

[Christoph Heiss]

Signed-off-by: Christoph Heiss <c.heiss at proxmox.com>
---
Changes v2 -> v3:
  * new patch, split out from later patch

 proxmox-auto-installer/src/answer.rs             | 16 +++++++++++++++-
 .../src/bin/proxmox-auto-installer.rs            | 11 +----------
 2 files changed, 16 insertions(+), 11 deletions(-)

diff --git a/proxmox-auto-installer/src/answer.rs b/proxmox-auto-installer/src/answer.rs
index d691da1..bada8a5 100644
--- a/proxmox-auto-installer/src/answer.rs
+++ b/proxmox-auto-installer/src/answer.rs
@@ -1,10 +1,11 @@
+use anyhow::{format_err, Result};
 use clap::ValueEnum;
 use proxmox_installer_common::{
     options::{BtrfsRaidLevel, FsType, ZfsChecksumOption, ZfsCompressOption, ZfsRaidLevel},
     utils::{CidrAddress, Fqdn},
 };
 use serde::{Deserialize, Serialize};
-use std::{collections::BTreeMap, net::IpAddr};
+use std::{collections::BTreeMap, io::BufRead, net::IpAddr};
 
 // BTreeMap is used to store filters as the order of the filters will be stable, compared to
 // storing them in a HashMap
@@ -18,6 +19,19 @@ pub struct Answer {
     pub disks: Disks,
 }
 
+impl Answer {
+    pub fn try_from_reader(reader: impl BufRead) -> Result<Self> {
+        let mut buffer = String::new();
+        let lines = reader.lines();
+        for line in lines {
+            buffer.push_str(&line.unwrap());
+            buffer.push('\n');
+        }
+
+        toml::from_str(&buffer).map_err(|err| format_err!("Failed parsing answer file: {err}"))
+    }
+}
+
 #[derive(Clone, Deserialize, Debug)]
 #[serde(deny_unknown_fields)]
 pub struct Global {
diff --git a/proxmox-auto-installer/src/bin/proxmox-auto-installer.rs b/proxmox-auto-installer/src/bin/proxmox-auto-installer.rs
index bf6f8fb..b29228f 100644
--- a/proxmox-auto-installer/src/bin/proxmox-auto-installer.rs
+++ b/proxmox-auto-installer/src/bin/proxmox-auto-installer.rs
@@ -42,16 +42,7 @@ fn auto_installer_setup(in_test_mode: bool) -> Result<(Answer, UdevInfo)> {
             .map_err(|err| format_err!("Failed to retrieve udev info details: {err}"))?
     };
 
-    let mut buffer = String::new();
-    let lines = std::io::stdin().lock().lines();
-    for line in lines {
-        buffer.push_str(&line.unwrap());
-        buffer.push('\n');
-    }
-
-    let answer: Answer =
-        toml::from_str(&buffer).map_err(|err| format_err!("Failed parsing answer file: {err}"))?;
-
+    let answer = Answer::try_from_reader(std::io::stdin().lock())?;
     Ok((answer, udev_info))
 }
 
-- 
2.45.2