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The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)
https://grpc.io/
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55 lines
1.4 KiB
55 lines
1.4 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 <grpc/support/log.h> |
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grpc_slice parse_hexstring(const char* hexstring) { |
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size_t nibbles = 0; |
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const char* p = nullptr; |
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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 (p = hexstring; *p; p++) { |
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nibbles += (*p >= '0' && *p <= '9') || (*p >= 'a' && *p <= '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 (p = hexstring; *p; p++) { |
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if (*p >= '0' && *p <= '9') { |
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temp = (uint8_t)(temp << 4) | (uint8_t)(*p - '0'); |
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nibbles++; |
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} else if (*p >= 'a' && *p <= 'f') { |
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temp = (uint8_t)(temp << 4) | (uint8_t)(*p - '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; |
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}
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