fix build errors

1 files changed, 112 insertions, 0 deletions

diff --git a/src/cbor_wrapper/cbor_decoder.cpp b/src/cbor_wrapper/cbor_decoder.cpp
new file mode 100644
index 00000000..a99cca02
--- /dev/null
+++ b/src/cbor_wrapper/cbor_decoder.cpp
@@ -0,0 +1,112 @@
+#include "cbor_decoder.hpp"
+
+#include <cstdint>
+#include <string>
+
+#include "cbor.h"
+#include "result.hpp"
+
+static const int kDecoderFlags = 0;
+
+namespace cbor {
+
+auto parse_stdstring(const CborValue* val, std::string* out) -> CborError {
+  char* buf;
+  size_t len;
+  CborError err = cbor_value_dup_text_string(val, &buf, &len, NULL);
+  if (err != CborNoError) {
+    return err;
+  }
+  *out = std::string(buf, len);
+  free(buf);
+  return err;
+}
+
+auto ArrayDecoder::Create(uint8_t* buffer, size_t buffer_len)
+    -> cpp::result<std::unique_ptr<ArrayDecoder>, CborError> {
+  auto decoder = std::make_unique<ArrayDecoder>();
+  cbor_parser_init(buffer, buffer_len, kDecoderFlags, &decoder->parser_,
+                   &decoder->root_);
+  if (!cbor_value_is_array(&decoder->root_)) {
+    return cpp::fail(CborErrorIllegalType);
+  }
+  CborError err = cbor_value_enter_container(&decoder->root_, &decoder->it_);
+  if (err != CborNoError) {
+    return cpp::fail(err);
+  }
+  return std::move(decoder);
+}
+
+auto ArrayDecoder::Create(CborValue& root)
+    -> cpp::result<std::unique_ptr<ArrayDecoder>, CborError> {
+  auto decoder = std::make_unique<ArrayDecoder>();
+  decoder->root_ = root;
+  if (!cbor_value_is_array(&decoder->root_)) {
+    return cpp::fail(CborErrorIllegalType);
+  }
+
+  CborError err = cbor_value_enter_container(&decoder->root_, &decoder->it_);
+  if (err != CborNoError) {
+    return cpp::fail(err);
+  }
+  return std::move(decoder);
+}
+
+template <>
+auto ArrayDecoder::NextValue() -> cpp::result<int64_t, CborError> {
+  return NextValue(&cbor_value_is_integer, &cbor_value_get_int);
+}
+template <>
+auto ArrayDecoder::NextValue() -> cpp::result<uint64_t, CborError> {
+  return NextValue(&cbor_value_is_unsigned_integer, &cbor_value_get_uint64);
+}
+template <>
+auto ArrayDecoder::NextValue() -> cpp::result<std::string, CborError> {
+  return NextValue(&cbor_value_is_byte_string, &parse_stdstring);
+}
+
+auto MapDecoder::Create(uint8_t* buffer, size_t buffer_len)
+    -> cpp::result<std::unique_ptr<MapDecoder>, CborError> {
+  auto decoder = std::make_unique<MapDecoder>();
+  cbor_parser_init(buffer, buffer_len, kDecoderFlags, &decoder->parser_,
+                   &decoder->root_);
+  if (!cbor_value_is_map(&decoder->root_)) {
+    return cpp::fail(CborErrorIllegalType);
+  }
+  CborError err = cbor_value_enter_container(&decoder->root_, &decoder->it_);
+  if (err != CborNoError) {
+    return cpp::fail(err);
+  }
+  return std::move(decoder);
+}
+
+auto MapDecoder::Create(CborValue& root)
+    -> cpp::result<std::unique_ptr<MapDecoder>, CborError> {
+  auto decoder = std::make_unique<MapDecoder>();
+  decoder->root_ = root;
+  if (!cbor_value_is_map(&decoder->root_)) {
+    return cpp::fail(CborErrorIllegalType);
+  }
+  CborError err = cbor_value_enter_container(&decoder->root_, &decoder->it_);
+  if (err != CborNoError) {
+    return cpp::fail(err);
+  }
+  return std::move(decoder);
+}
+
+template <>
+auto MapDecoder::FindValue(const std::string& key) -> std::optional<int64_t> {
+  return FindValue(key, &cbor_value_is_integer, &cbor_value_get_int);
+}
+template <>
+auto MapDecoder::FindValue(const std::string& key) -> std::optional<uint64_t> {
+  return FindValue(key, &cbor_value_is_unsigned_integer,
+                   &cbor_value_get_uint64);
+}
+template <>
+auto MapDecoder::FindValue(const std::string& key)
+    -> std::optional<std::string> {
+  return FindValue(key, &cbor_value_is_byte_string, &parse_stdstring);
+}
+
+}  // namespace cbor