projjal commented on a change in pull request #10479:
URL: https://github.com/apache/arrow/pull/10479#discussion_r659333734
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File path: cpp/src/gandiva/gdv_function_stubs.cc
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@@ -302,6 +303,61 @@ char* gdv_fn_dec_to_string(int64_t context, int64_t
x_high, uint64_t x_low,
return ret;
}
+GANDIVA_EXPORT
+const char* gdv_fn_base64_encode_binary(int64_t context, const char* in,
int32_t in_len,
+ int32_t* out_len) {
+ if (in_len < 0) {
+ gdv_fn_context_set_error_msg(context, "Buffer length can not be negative");
+ *out_len = 0;
+ return "";
+ }
+ if (in_len == 0) {
+ *out_len = 0;
+ return "";
+ }
+ // use arrow method to encode base64 string
+ std::string encoded_str =
+ arrow::util::base64_encode(reinterpret_cast<const unsigned char*>(in),
in_len);
+ *out_len = static_cast<int32_t>(encoded_str.length());
+ // allocate memory for response
+ char* ret = reinterpret_cast<char*>(
+ gdv_fn_context_arena_malloc(context, static_cast<int32_t>(*out_len)));
+ if (ret == nullptr) {
+ gdv_fn_context_set_error_msg(context, "Could not allocate memory");
+ *out_len = 0;
+ return "";
+ }
+ memcpy(ret, encoded_str.data(), *out_len);
+ return ret;
+}
+
+GANDIVA_EXPORT
+const char* gdv_fn_base64_decode_utf8(int64_t context, const char* in, int32_t
in_len,
+ int32_t* out_len) {
+ if (in_len < 0) {
+ gdv_fn_context_set_error_msg(context, "Buffer length can not be negative");
+ *out_len = 0;
+ return "";
+ }
+ if (in_len == 0) {
+ *out_len = 0;
+ return "";
+ }
+ // use arrow method to decode base64 string
+ std::string decoded_str = arrow::util::base64_decode(in);
Review comment:
This seems incorrect. It will assume null terminated string
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