Improve exception message when trying to load an old history file, fixes

#180
jline · Oct 10, 2017 · 27346d0 · 27346d0
1 parent d2b81e3
commit 27346d0
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/reader/src/main/java/org/jline/reader/impl/history/DefaultHistory.java b/reader/src/main/java/org/jline/reader/impl/history/DefaultHistory.java
@@ -84,6 +84,11 @@ public void load() throws IOException {
                         internalClear();
                         reader.lines().forEach(l -> {
                             int idx = l.indexOf(':');
+                            if (idx < 0) {
+                                throw new IllegalArgumentException("Bad history file syntax! " +
+                                        "The history file `" + path + "` may be an older history: " +
+                                        "please remove it or use a different history file.");
+                            }
                             Instant time = Instant.ofEpochMilli(Long.parseLong(l.substring(0, idx)));
                             String line = unescape(l.substring(idx + 1));
                             internalAdd(time, line);