confirmation dialog added.

src/main.rs

@@ -451,6 +451,24 @@ fn fix_db_entries(tx: &Transaction, book_entries: &Vec<BookEntry>) -> Statistics
 }
 
 fn main() {
+    if cfg!(target_arch = "arm") {
+        let res = pocketbook::dialog(
+            pocketbook::Icon::None,
+            "PocketBook has sometimes problems parsing metadata.\n\
+            This app tries to fix some of these issues.\n\
+            (Note: The database file explore-3.db will be altered!)\n\
+            \n\
+            Please be patient - this might take a while.\n\
+            You will see a blank screen during the process.\n\
+            \n\
+            Proceed?",
+            &["Cancel", "Yes"],
+        );
+        if res == 1 {
+            return;
+        }
+    }
+
     let mut conn = Connection::open("/mnt/ext1/system/explorer-3/explorer-3.db").unwrap();
 
     conn.execute("PRAGMA foreign_keys = 0", NO_PARAMS).unwrap();
@@ -465,6 +483,7 @@ fn main() {
             pocketbook::dialog(
                 pocketbook::Icon::Info,
                 "The database seems to be ok.\nNothing had to be fixed.",
+                &["OK"],
             );
         } else {
             pocketbook::dialog(
@@ -473,6 +492,7 @@ fn main() {
                     "Authors fixed: {}\nBooks cleaned from DB: {}",
                     &stat.authors_fixed, &stat.ghost_books_cleaned
                 ),
+                &["OK"],
             );
         }
     } else {

src/pocketbook.rs

@@ -12,7 +12,7 @@ pub enum Icon {
     WLan,
 }
 
-pub fn dialog(icon: Icon, text: &str) {
+pub fn dialog(icon: Icon, text: &str, buttons: &[&str]) -> i32 {
     let iconstr = match icon {
         Icon::None => "0",
         Icon::Info => "1",
@@ -22,8 +22,10 @@ pub fn dialog(icon: Icon, text: &str) {
         Icon::WLan => "5",
     };
 
-    Command::new(DIALOG_PATH)
-        .args(&[iconstr, "", text, "OK"])
+    let res = Command::new(DIALOG_PATH)
+        .args([&[iconstr, "", text], buttons].concat())
         .output()
         .unwrap();
+
+    res.status.code().unwrap_or(-1)
 }