From 96156727c0fff7795f0163e9134ced0e93ce13c4 Mon Sep 17 00:00:00 2001
From: Daniele Varrazzo <daniele.varrazzo@gmail.com>
Date: Sat, 19 Oct 2019 16:28:10 +0100
Subject: [PATCH] Allow parsing boolean both upper and lowercase

Reportedly useful on H2 databases.

Close #965
---
 psycopg/typecast_basic.c | 23 +++++++++++++++++------
 1 file changed, 17 insertions(+), 6 deletions(-)

diff --git a/psycopg/typecast_basic.c b/psycopg/typecast_basic.c
index 0f0fb929..51ba2458 100644
--- a/psycopg/typecast_basic.c
+++ b/psycopg/typecast_basic.c
@@ -114,16 +114,27 @@ typecast_UNICODE_cast(const char *s, Py_ssize_t len, PyObject *curs)
 static PyObject *
 typecast_BOOLEAN_cast(const char *s, Py_ssize_t len, PyObject *curs)
 {
-    PyObject *res;
+    PyObject *res = NULL;
 
     if (s == NULL) { Py_RETURN_NONE; }
 
-    if (s[0] == 't')
-        res = Py_True;
-    else
-        res = Py_False;
+    switch (s[0]) {
+        case 't':
+        case 'T':
+            res = Py_True;
+            break;
 
-    Py_INCREF(res);
+        case 'f':
+        case 'F':
+            res = Py_False;
+            break;
+
+        default:
+            PyErr_Format(InterfaceError, "can't parse boolean: '%s'", s);
+            break;
+    }
+
+    Py_XINCREF(res);
     return res;
 }