get signature from file (#135)

CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Changed
+
+- Get signature from file [#135]
+
 ## [0.3.1] - 2021-05-04
 
 ### Added
@@ -239,6 +243,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 [#131]: https://github.com/soywod/himalaya/issues/131
 [#132]: https://github.com/soywod/himalaya/issues/132
 [#133]: https://github.com/soywod/himalaya/issues/133
+[#135]: https://github.com/soywod/himalaya/issues/135
 [#136]: https://github.com/soywod/himalaya/issues/136
 [#138]: https://github.com/soywod/himalaya/issues/138
 [#141]: https://github.com/soywod/himalaya/issues/141

src/config/model.rs

@@ -2,7 +2,14 @@ use error_chain::error_chain;
 use lettre::transport::smtp::authentication::Credentials as SmtpCredentials;
 use log::debug;
 use serde::Deserialize;
-use std::{collections::HashMap, env, fs::File, io::Read, path::PathBuf, thread};
+use std::{
+    collections::HashMap,
+    env,
+    fs::{self, File},
+    io::Read,
+    path::PathBuf,
+    thread,
+};
 use toml;
 
 use crate::output::utils::run_cmd;
@@ -220,11 +227,13 @@ impl Config {
     }
 
     pub fn signature(&self, account: &Account) -> Option<String> {
-        account
+        let sig = account
             .signature
             .as_ref()
-            .or_else(|| self.signature.as_ref())
-            .map(|sig| sig.to_owned())
+            .or_else(|| self.signature.as_ref());
+
+        sig.and_then(|sig| fs::read_to_string(sig).ok())
+            .or_else(|| sig.map(|sig| sig.to_owned()))
     }
 
     pub fn default_page_size(&self, account: &Account) -> usize {