1 files changed, 44 insertions, 0 deletions
diff --git a/sources/shiboken2/libshiboken/sbkstring.cpp b/sources/shiboken2/libshiboken/sbkstring.cpp
index 092745d3d..ed8b61fc8 100644
--- a/sources/shiboken2/libshiboken/sbkstring.cpp
+++ b/sources/shiboken2/libshiboken/sbkstring.cpp
@@ -271,5 +271,49 @@ PyObject *createStaticString(const char *str)
     return result;
 }
 
+///////////////////////////////////////////////////////////////////////
+//
+// PYSIDE-1019: Helper function for snake_case vs. camelCase names
+// ---------------------------------------------------------------
+//
+// When renaming dict entries, `BindingManager::getOverride` must
+// use adapted names.
+//
+// This might become more complex when we need to register
+// exceptions from this rule.
+//
+
+PyObject *getSnakeCaseName(const char *name, bool lower)
+{
+    /*
+     * Convert `camelCase` to `snake_case`.
+     * Gives up when there are two consecutive upper chars.
+     *
+     * Also functions beginning with `gl` followed by upper case stay
+     * unchanged since that are the special OpenGL functions.
+     */
+    if (!lower
+        || strlen(name) < 3
+        || (name[0] == 'g' && name[1] == 'l' && isupper(name[2])))
+        return createStaticString(name);
+
+    char new_name[200 + 1] = {};
+    const char *p = name;
+    char *q = new_name;
+    for (; *p && q - new_name < 200; ++p, ++q) {
+        if (isupper(*p)) {
+            if (p != name && isupper(*(p - 1)))
+                return createStaticString(name);
+            *q = '_';
+            ++q;
+            *q = tolower(*p);
+        }
+        else {
+            *q = *p;
+        }
+    }
+    return createStaticString(new_name);
+}
+
 } // namespace String
 } // namespace Shiboken