Fix operator<<(ostream, exception) to strip some more junk

1 files changed, 17 insertions, 4 deletions

diff --git a/libbutl/utility.cxx b/libbutl/utility.cxx
index 4645b68..3606972 100644
--- a/libbutl/utility.cxx
+++ b/libbutl/utility.cxx
@@ -167,12 +167,25 @@ namespace std
     // Strip the suffix for system_error thrown by
     // throw_system_error(system_code) on Windows. For example for the
     // ERROR_INVALID_DATA error code the original description will be
-    // 'Invalid data. : Success' for MinGW libstdc++ and
-    // 'Invalid data. : Success.' for msvcrt.
+    // 'Invalid data. : Success' or 'Invalid data. : No error' for MinGW
+    // libstdc++ and 'Invalid data. : Success.' or ". : The operation completed
+    // successfully." for msvcrt.
     //
+    // Check if the string ends with the specified suffix and return its
+    // length if that's the case. So can be used as bool.
+    //
+    auto suffix = [s, n] (const char* v) -> size_t
+    {
+      size_t nv (string::traits_type::length (v));
+      return string::traits_type::compare (s + n - nv, v, nv) == 0 ? nv : 0;
+    };
+
+    size_t ns;
     if (n >= 11 &&
-        string::traits_type::compare (s + n - 11, ". : Success", 11) == 0)
-      n -= 11;
+        ((ns = suffix (". : Success")) ||
+         (ns = suffix (". : No error")) ||
+         (ns = suffix (". : The operation completed successfully"))))
+      n -= ns;
 
     // Lower-case the first letter if the beginning looks like a word (the
     // second character is the lower-case letter or space).