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/*
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*
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* Copyright 2015, Google Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Google Inc. nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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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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gpr_slice parse_hexstring(const char *hexstring) {
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size_t nibbles = 0;
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const char *p = 0;
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uint8_t *out;
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uint8_t temp;
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gpr_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 = gpr_slice_malloc(nibbles / 2);
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out = GPR_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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