5 files changed, 50 insertions, 19 deletions

diff --git a/src/backup.h b/src/backup.h
index 289ee62..38a0b68 100644
--- a/src/backup.h
+++ b/src/backup.h
@@ -27,15 +27,13 @@
 #ifndef BACKUP_H
 #define BACKUP_H
 
+#include "exception.h"
 #include "options.h"
 
-class BackupError : public std::runtime_error
+class BackupError : public DiffddError
 {
   public:
-    explicit BackupError(const std::string &message)
-        : std::runtime_error(message)
-    {
-    }
+    explicit BackupError(const std::string &message) : DiffddError(message) {}
 };
 
 void backup(const OptionsBackup &opts);
diff --git a/src/exception.h b/src/exception.h
new file mode 100644
index 0000000..99f8ee6
--- /dev/null
+++ b/src/exception.h
@@ -0,0 +1,39 @@
+/* Copyright 2024 Ján Sučan <jan@jansucan.com>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#pragma once
+
+#include <stdexcept>
+#include <string>
+
+class DiffddError : public std::runtime_error
+{
+  public:
+    explicit DiffddError(const std::string &message)
+        : std::runtime_error(message)
+    {
+    }
+};
diff --git a/src/main.cpp b/src/main.cpp
index 01f3a69..0810f04 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -48,10 +48,7 @@ main(int argc, char **argv)
         OptionParser::printUsage();
         std::cerr << "ERROR: " << e.what() << std::endl;
         exit(1);
-    } catch (const BackupError &e) {
-        std::cerr << "ERROR: " << e.what() << std::endl;
-        exit(1);
-    } catch (const RestoreError &e) {
+    } catch (const DiffddError &e) {
         std::cerr << "ERROR: " << e.what() << std::endl;
         exit(1);
     }
diff --git a/src/options.h b/src/options.h
index e0c16d1..2355082 100644
--- a/src/options.h
+++ b/src/options.h
@@ -27,16 +27,15 @@
 #ifndef OPTIONS_H
 #define OPTIONS_H
 
+#include "exception.h"
+
 #include <cstdint>
 #include <filesystem>
 
-class OptionError : public std::runtime_error
+class OptionError : public DiffddError
 {
   public:
-    explicit OptionError(const std::string &message)
-        : std::runtime_error(message)
-    {
-    }
+    explicit OptionError(const std::string &message) : DiffddError(message) {}
 };
 
 class Options
diff --git a/src/restore.h b/src/restore.h
index 0ea9549..4aee092 100644
--- a/src/restore.h
+++ b/src/restore.h
@@ -27,15 +27,13 @@
 #ifndef RESTORE_H
 #define RESTORE_H
 
+#include "exception.h"
 #include "options.h"
 
-class RestoreError : public std::runtime_error
+class RestoreError : public DiffddError
 {
   public:
-    explicit RestoreError(const std::string &message)
-        : std::runtime_error(message)
-    {
-    }
+    explicit RestoreError(const std::string &message) : DiffddError(message) {}
 };
 
 void restore(const OptionsRestore &opts);