+ does not exit anymore if a ZIM file is not readable (maybe the other ones are...)

src/server/kiwix-serve.cpp

@@ -452,8 +452,8 @@ int main(int argc, char **argv) {
   vector<string>::iterator itr;
   kiwix::Book currentBook;
   for ( itr = booksIds.begin(); itr != booksIds.end(); ++itr ) {
+    bool zimFileOk = false;
     libraryManager.getBookById(*itr, currentBook);
-    string humanReadableId = currentBook.getHumanReadableIdFromPath();
     zimPath = currentBook.pathAbsolute;
 
     if (!zimPath.empty()) {
@@ -463,10 +463,13 @@ int main(int argc, char **argv) {
       kiwix::Reader *reader = NULL;
       try {
 	reader = new kiwix::Reader(zimPath);
+	zimFileOk = true;
       } catch (...) {
 	cerr << "Unable to open the ZIM file '" << zimPath << "'." << endl;
-	exit(1);
       }
+
+      if (zimFileOk) {
+	string humanReadableId = currentBook.getHumanReadableIdFromPath();
 	readers[humanReadableId] = reader;
       
 	/* Instanciate the ZIM index (if necessary) */
@@ -499,12 +502,13 @@ int main(int argc, char **argv) {
 	}
       }
     }
+  }
 
   /* Compute the Welcome HTML */
   string welcomeBooksHtml;
   for ( itr = booksIds.begin(); itr != booksIds.end(); ++itr ) {
     libraryManager.getBookById(*itr, currentBook);
-    if (!currentBook.path.empty()) {
+    if (!currentBook.path.empty() && readers.find(currentBook.getHumanReadableIdFromPath()) != readers.end()) {
       welcomeBooksHtml += "<h3><a href=\"#\">" + currentBook.title + "</a></h3> \
                            <table style=\"overflow-x: hidden; overflow-y: hidden; margin-top: 0px; margin-bottom: 0px; padding-top: 0px; padding-bottom: 0px; width: 100%; \"><tr> \
                              <td style=\"background-repeat: no-repeat; background-image: url(data:" + currentBook.faviconMimeType+ ";base64," + currentBook.favicon + ")\"><div style=\"width: 50px\"/></td> \