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The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)
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62 lines
1.5 KiB
62 lines
1.5 KiB
// |
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// |
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// Copyright 2015 gRPC authors. |
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// |
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// Licensed under the Apache License, Version 2.0 (the "License"); |
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// you may not use this file except in compliance with the License. |
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// You may obtain a copy of the License at |
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// |
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// http://www.apache.org/licenses/LICENSE-2.0 |
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// |
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// Unless required by applicable law or agreed to in writing, software |
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// distributed under the License is distributed on an "AS IS" BASIS, |
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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// See the License for the specific language governing permissions and |
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// limitations under the License. |
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// |
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// |
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#include "test/core/util/parse_hexstring.h" |
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#include <stddef.h> |
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#include <stdint.h> |
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#include <grpc/slice.h> |
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#include <grpc/support/log.h> |
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namespace grpc_core { |
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Slice ParseHexstring(absl::string_view hexstring) { |
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size_t nibbles = 0; |
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uint8_t* out; |
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uint8_t temp; |
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grpc_slice slice; |
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for (auto c : hexstring) { |
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nibbles += (c >= '0' && c <= '9') || (c >= 'a' && c <= 'f'); |
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} |
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GPR_ASSERT((nibbles & 1) == 0); |
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slice = grpc_slice_malloc(nibbles / 2); |
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out = GRPC_SLICE_START_PTR(slice); |
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nibbles = 0; |
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temp = 0; |
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for (auto c : hexstring) { |
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if (c >= '0' && c <= '9') { |
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temp = static_cast<uint8_t>(temp << 4) | static_cast<uint8_t>(c - '0'); |
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nibbles++; |
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} else if (c >= 'a' && c <= 'f') { |
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temp = |
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static_cast<uint8_t>(temp << 4) | static_cast<uint8_t>(c - 'a' + 10); |
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nibbles++; |
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} |
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if (nibbles == 2) { |
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*out++ = temp; |
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nibbles = 0; |
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} |
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} |
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return Slice(slice); |
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} |
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} // namespace grpc_core
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