Fix windows compile

1 files changed, 69 insertions, 0 deletions

diff --git a/tools/codegen/core/gen_percent_encoding_tables.cc b/tools/codegen/core/gen_percent_encoding_tables.cc
new file mode 100644
index 0000000000..a99024e5ed
--- /dev/null
+++ b/tools/codegen/core/gen_percent_encoding_tables.cc
@@ -0,0 +1,69 @@
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+/* generates constant table for metadata.cc */
+
+#include <stdio.h>
+#include <string.h>
+
+static unsigned char legal_bits[256 / 8];
+
+static void legal(int x) {
+  int byte = x / 8;
+  int bit = x % 8;
+  /* NB: the following integer arithmetic operation needs to be in its
+   * expanded form due to the "integral promotion" performed (see section
+   * 3.2.1.1 of the C89 draft standard). A cast to the smaller container type
+   * is then required to avoid the compiler warning */
+  legal_bits[byte] =
+      (unsigned char)((legal_bits[byte] | (unsigned char)(1 << bit)));
+}
+
+static void dump(const char *name) {
+  int i;
+
+  printf("const uint8_t %s[256/8] = ", name);
+  for (i = 0; i < 256 / 8; i++)
+    printf("%c 0x%02x", i ? ',' : '{', legal_bits[i]);
+  printf(" };\n");
+}
+
+static void clear(void) { memset(legal_bits, 0, sizeof(legal_bits)); }
+
+int main(void) {
+  int i;
+
+  clear();
+  for (i = 'a'; i <= 'z'; i++) legal(i);
+  for (i = 'A'; i <= 'Z'; i++) legal(i);
+  for (i = '0'; i <= '9'; i++) legal(i);
+  legal('-');
+  legal('_');
+  legal('.');
+  legal('~');
+  dump("grpc_url_percent_encoding_unreserved_bytes");
+
+  clear();
+  for (i = 32; i <= 126; i++) {
+    if (i == '%') continue;
+    legal(i);
+  }
+  dump("grpc_compatible_percent_encoding_unreserved_bytes");
+
+  return 0;
+}