[build] MVP for building with bazel (#6994)

shared/bazel/rules/gen/gen_resources.py

@@ -0,0 +1,58 @@
+import os
+import argparse
+import binascii
+
+
+def generate_file(resource_file, output_file, prefix, namespace):
+    func_name = "GetResource_" + os.path.basename(resource_file).replace(
+        "-", "_"
+    ).replace(".", "_")
+
+    with open(resource_file, "rb") as f:
+        raw_data = f.read()
+        hex = str(binascii.hexlify(raw_data), "ascii")
+        data = ", ".join("0x" + hex[i : i + 2] for i in range(0, len(hex), 2))
+        data_size = len(raw_data)
+
+    output = """#include <stddef.h>
+#include <string_view>
+extern "C" {{
+static const unsigned char contents[] = {{ {data} }};
+const unsigned char* {prefix}_{func_name}(size_t* len) {{
+  *len = {data_size};
+  return contents;
+}}
+}}
+namespace {namespace} {{
+std::string_view {func_name}() {{
+  return std::string_view(reinterpret_cast<const char*>(contents), {data_size});
+}}
+}}
+""".format(
+        func_name=func_name,
+        data_size=data_size,
+        prefix=prefix,
+        data=data,
+        namespace=namespace,
+    )
+
+    with open(output_file, "w") as f:
+        f.write(output)
+
+
+def main():
+    parser = argparse.ArgumentParser()
+    parser.add_argument("--namespace")
+    parser.add_argument("--prefix")
+    parser.add_argument("--resources", nargs="+")
+    parser.add_argument("--output_files", nargs="+")
+
+    args = parser.parse_args()
+    assert len(args.resources) == len(args.output_files)
+
+    for i, resource in enumerate(args.resources):
+        generate_file(resource, args.output_files[i], args.prefix, args.namespace)
+
+
+if __name__ == "__main__":
+    main()