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/*
* Copyright (c) 2017 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
*/
#include <config.h>
#include <LongBow/runtime.h>
#include <ccnx/common/ccnx_NameSegmentNumber.h>
#include <ccnx/common/ccnx_NameSegment.h>
#include <parc/algol/parc_Buffer.h>
#include <parc/algol/parc_BufferComposer.h>
bool
ccnxNameSegmentNumber_IsValid(const CCNxNameSegment *nameSegment)
{
bool result = false;
size_t remaining = parcBuffer_Remaining(ccnxNameSegment_GetValue(nameSegment));
if (remaining > 0 && remaining < 8) {
result = true;
}
return result;
}
void
ccnxNameSegmentNumber_AssertValid(const CCNxNameSegment *nameSegment)
{
assertTrue(ccnxNameSegmentNumber_IsValid(nameSegment), "Encountered an invalid CCNxNameSegment");
}
CCNxNameSegment *
ccnxNameSegmentNumber_Create(CCNxNameLabelType type, uint64_t value)
{
PARCBufferComposer *composer = parcBufferComposer_Create();
bool mustContinue = false;
for (int byte = 7; byte >= 0; byte--) {
uint8_t b = (value >> (byte * 8)) & 0xFF;
if (b != 0 || byte == 0 || mustContinue) {
parcBufferComposer_PutUint8(composer, b);
mustContinue = true;
}
}
PARCBuffer *buffer = parcBuffer_Flip(parcBufferComposer_GetBuffer(composer));
CCNxNameSegment *segment = ccnxNameSegment_CreateTypeValue(type, buffer);
parcBufferComposer_Release(&composer);
return segment;
}
uint64_t
ccnxNameSegmentNumber_Value(const CCNxNameSegment *nameSegment)
{
const PARCBuffer *buffer = ccnxNameSegment_GetValue(nameSegment);
uint64_t result = 0;
for (size_t i = 0; i < parcBuffer_Remaining(buffer); i++) {
result = (result << 8) | parcBuffer_GetAtIndex(buffer, i);
}
return result;
}
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