From c18d216d2ebfcca0abf20e42f735085401ab8936 Mon Sep 17 00:00:00 2001
From: Timo Hocker <t-hocker@web.de>
Date: Thu, 28 May 2020 09:20:53 +0200
Subject: [PATCH] error callback

---
 CHANGELOG.md                | 4 ++++
 Jenkinsfile                 | 2 +-
 README.md                   | 3 ++-
 lib/Option.ts               | 5 +++++
 lib/Sources/OptionSource.ts | 3 ++-
 5 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 314b7e3..b4a66f7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## 1.8.0
+
+callback in case an option could not be assigned instead of silently skipping
+
 ## 1.7.0
 
 parsing config files with [hjson](https://github.com/hjson/hjson-js)
diff --git a/Jenkinsfile b/Jenkinsfile
index 5640634..b3515ba 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -5,7 +5,7 @@ pipeline {
       VERSION = VersionNumber([
           versionNumberString:
               '${BUILDS_ALL_TIME}',
-          versionPrefix: '1.7.',
+          versionPrefix: '1.8.',
           worstResultForIncrement: 'SUCCESS'
       ])
   }
diff --git a/README.md b/README.md
index e72115f..1ccbd64 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # @sapphirecode/console-app
 
-version: 1.7.x
+version: 1.8.x
 
 read parameters from env, console args or interactively
 
@@ -31,6 +31,7 @@ const reader = new InteractiveOptions([
     message: 'should foo be true?', // message when asking interactively (optional)
     preset: [], // preset choices for string and path types (optional)
     error: 'wrong input', // message to display when the user gives invalid input
+    error_callback: (opt, val, err)=>{...} // function to call when an option value could not be read
   },
 ]);
 
diff --git a/lib/Option.ts b/lib/Option.ts
index 2d5a77e..621fe8b 100644
--- a/lib/Option.ts
+++ b/lib/Option.ts
@@ -19,6 +19,11 @@ interface Option {
   message?: string;
   preset?: unknown[];
   error?: string;
+  error_callback?: (
+    option: string,
+    value: unknown,
+    e: Error
+  ) => unknown;
 }
 
 interface OptionProcess extends Option {
diff --git a/lib/Sources/OptionSource.ts b/lib/Sources/OptionSource.ts
index 95bb90f..2214329 100644
--- a/lib/Sources/OptionSource.ts
+++ b/lib/Sources/OptionSource.ts
@@ -19,7 +19,8 @@ export abstract class OptionSource {
       opt.filled = true;
     }
     catch (e) {
-      // could not assign
+      if (typeof opt.error_callback !== 'undefined')
+        opt.error_callback (opt.name, value, e);
     }
   }
 }