fix:amaZon -> amazon (#324)

Author: lemire

src/ada_idna.cpp

@@ -2635,7 +2635,7 @@ bool ascii_has_upper_case(char* input, size_t length) {
   auto broadcast = [](uint8_t v) -> uint64_t { return 0x101010101010101 * v; };
   uint64_t broadcast_80 = broadcast(0x80);
   uint64_t broadcast_Ap = broadcast(128 - 'A');
-  uint64_t broadcast_Zp = broadcast(128 - 'Z');
+  uint64_t broadcast_Zp = broadcast(128 - 'Z' - 1);
   size_t i = 0;
 
   uint64_t runner{0};
@@ -2657,7 +2657,7 @@ void ascii_map(char* input, size_t length) {
   auto broadcast = [](uint8_t v) -> uint64_t { return 0x101010101010101 * v; };
   uint64_t broadcast_80 = broadcast(0x80);
   uint64_t broadcast_Ap = broadcast(128 - 'A');
-  uint64_t broadcast_Zp = broadcast(128 - 'Z');
+  uint64_t broadcast_Zp = broadcast(128 - 'Z' - 1);
   size_t i = 0;
 
   for (; i + 7 < length; i += 8) {

src/unicode.cpp

@@ -15,7 +15,7 @@ constexpr bool to_lower_ascii(char* input, size_t length) noexcept {
   auto broadcast = [](uint8_t v) -> uint64_t { return 0x101010101010101 * v; };
   uint64_t broadcast_80 = broadcast(0x80);
   uint64_t broadcast_Ap = broadcast(128 - 'A');
-  uint64_t broadcast_Zp = broadcast(128 - 'Z');
+  uint64_t broadcast_Zp = broadcast(128 - 'Z' - 1);
   uint64_t non_ascii = 0;
   size_t i = 0;
 

tests/basic_tests.cpp

@@ -287,6 +287,20 @@ bool default_port_should_be_removed() {
   TEST_SUCCEED()
 }
 
+template <class result>
+bool test_amazon() {
+  TEST_START()
+  auto url = ada::parse<result>("HTTP://AMAZON.COM");
+  if (!url) {
+    TEST_FAIL("Should succeed");
+  }
+
+  TEST_ASSERT(url->get_href(), "http://amazon.com/",
+              "should be all lower case");
+  TEST_SUCCEED()
+}
+
+
 template <class result>
 bool remove_username() {
   TEST_START()
@@ -424,7 +438,7 @@ bool all_tests() {
          readme1<result>() && readme2<result>() && readme3<result>() &&
          readme4<result>() && readme5<result>() && readme6<result>() &&
          readme7<result>() && nodejs1<result>() && nodejs2<result>() &&
-         nodejs3<result>() && nodejs4<result>();
+         nodejs3<result>() && nodejs4<result>() && test_amazon<result>();
 }
 
 int main() {