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-rw-r--r--libparc/parc/algol/parc_BufferChunker.c261
1 files changed, 0 insertions, 261 deletions
diff --git a/libparc/parc/algol/parc_BufferChunker.c b/libparc/parc/algol/parc_BufferChunker.c
deleted file mode 100644
index f3a4ab67..00000000
--- a/libparc/parc/algol/parc_BufferChunker.c
+++ /dev/null
@@ -1,261 +0,0 @@
-/*
- * 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 <stdio.h>
-#include <string.h>
-#include <sys/time.h>
-
-#include <parc/algol/parc_Object.h>
-#include <parc/algol/parc_Buffer.h>
-#include <parc/algol/parc_Memory.h>
-
-#include <parc/algol/parc_BufferChunker.h>
-
-PARCChunkerInterface *PARCBufferChunkerAsChunker = &(PARCChunkerInterface) {
- .ForwardIterator = (void *(*)(const void *))parcBufferChunker_ForwardIterator,
- .ReverseIterator = (void *(*)(const void *))parcBufferChunker_ReverseIterator,
- .GetChunkSize = (size_t (*)(const void *))parcBufferChunker_GetChunkSize
-};
-
-struct _parc_chunker_state {
- size_t chunkNumber;
- int direction;
- bool atEnd;
- size_t position;
- size_t nextChunkSize;
-};
-
-typedef struct _parc_chunker_state _ChunkerState;
-
-struct parc_buffer_chunker {
- // State
- size_t chunkSize;
-
- // Container for the data to be parsed
- PARCBuffer *data;
-
- // The current element of the iterator
- PARCBuffer *currentElement;
-};
-
-static void
-_destroy(PARCBufferChunker **chunkerP)
-{
- if ((*chunkerP)->data != NULL) {
- parcBuffer_Release(&(*chunkerP)->data);
- }
-
- if ((*chunkerP)->currentElement != NULL) {
- parcBuffer_Release(&(*chunkerP)->currentElement);
- }
-}
-
-static void *
-_InitForward(PARCBufferChunker *chunker)
-{
- _ChunkerState *state = parcMemory_Allocate(sizeof(_ChunkerState));
-
- state->chunkNumber = 0;
- state->direction = 0;
- state->position = 0;
- state->atEnd = false;
-
- if (parcBuffer_Remaining(chunker->data) < chunker->chunkSize) {
- state->nextChunkSize = parcBuffer_Remaining(chunker->data);
- } else {
- state->nextChunkSize = chunker->chunkSize;
- }
-
- return state;
-}
-
-static void *
-_InitReverse(PARCBufferChunker *chunker)
-{
- _ChunkerState *state = parcMemory_Allocate(sizeof(_ChunkerState));
-
- state->chunkNumber = 0;
- state->direction = 1;
- state->atEnd = false;
-
- if (parcBuffer_Remaining(chunker->data) < chunker->chunkSize) {
- state->position = 0;
- state->nextChunkSize = parcBuffer_Remaining(chunker->data);
- } else {
- state->position = parcBuffer_Remaining(chunker->data) - chunker->chunkSize;
- state->nextChunkSize = chunker->chunkSize;
- }
-
- return state;
-}
-
-static bool
-_ccnxChunker_HasNext(PARCBufferChunker *chunker, void *voidstate)
-{
- _ChunkerState *state = (_ChunkerState *) voidstate;
- return !state->atEnd;
-}
-
-static void
-_advanceStateForward(PARCBufferChunker *chunker, _ChunkerState *state)
-{
- state->position += state->nextChunkSize;
-
- size_t remaining = parcBuffer_Remaining(chunker->data);
-
- if (remaining == 0) {
- state->atEnd = true;
- } else if (remaining > chunker->chunkSize) {
- state->nextChunkSize = chunker->chunkSize;
- } else {
- state->nextChunkSize = remaining;
- }
-}
-
-static void
-_advanceStateBackward(PARCBufferChunker *chunker, _ChunkerState *state)
-{
- // Previous chunk size
- size_t chunkSize = state->nextChunkSize;
- if (chunkSize != chunker->chunkSize || state->position == 0) {
- state->atEnd = true;
- } else {
- if (state->position < chunkSize) {
- state->nextChunkSize = state->position; // on next read, go to the current position
- state->position = 0; // we reached the beginning
- } else {
- state->position -= chunkSize;
- }
- }
-}
-
-static void
-_advanceState(PARCBufferChunker *chunker, _ChunkerState *state)
-{
- state->chunkNumber++;
-
- if (state->direction == 0) {
- _advanceStateForward(chunker, state);
- } else {
- _advanceStateBackward(chunker, state);
- }
-}
-
-static void *
-_ccnxChunker_NextFromBuffer(PARCBufferChunker *chunker, _ChunkerState *state)
-{
- size_t chunkSize = state->nextChunkSize;
-
- parcBuffer_SetPosition(chunker->data, state->position);
- PARCBuffer *slice = parcBuffer_CreateFromArray(parcBuffer_Overlay(chunker->data, chunkSize), chunkSize);
- slice = parcBuffer_Flip(slice);
-
- _advanceState(chunker, state);
-
- return slice;
-}
-
-static void *
-_ccnxChunker_Next(PARCBufferChunker *chunker, void *state)
-{
- PARCBuffer *buffer = _ccnxChunker_NextFromBuffer(chunker, state);
-
- if (chunker->currentElement != NULL) {
- parcBuffer_Release(&chunker->currentElement);
- }
- if (buffer != NULL) {
- chunker->currentElement = parcBuffer_Acquire(buffer);
- }
-
- return state;
-}
-
-static void *
-_ccnxChunker_GetElement(PARCBufferChunker *chunker, void *state)
-{
- return chunker->currentElement;
-}
-
-static void
-_ccnxChunker_Finish(PARCBufferChunker *chunker, void *state)
-{
- _ChunkerState *thestate = (_ChunkerState *) state;
- parcMemory_Deallocate(&thestate);
-}
-
-static void
-_ccnxChunker_AssertValid(const void *state)
-{
- // pass
-}
-
-parcObject_ExtendPARCObject(PARCBufferChunker, _destroy, NULL, NULL, NULL, NULL, NULL, NULL);
-parcObject_ImplementAcquire(parcBufferChunker, PARCBufferChunker);
-parcObject_ImplementRelease(parcBufferChunker, PARCBufferChunker);
-
-PARCBufferChunker *
-parcBufferChunker_Create(PARCBuffer *data, size_t chunkSize)
-{
- PARCBufferChunker *chunker = parcObject_CreateInstance(PARCBufferChunker);
-
- if (chunker != NULL) {
- chunker->chunkSize = chunkSize;
- chunker->data = parcBuffer_Acquire(data);
- chunker->currentElement = NULL;
- }
-
- return chunker;
-}
-
-PARCIterator *
-parcBufferChunker_ForwardIterator(const PARCBufferChunker *chunker)
-{
- PARCIterator *iterator = parcIterator_Create((void *) chunker,
- (void *(*)(PARCObject *))_InitForward,
- (bool (*)(PARCObject *, void *))_ccnxChunker_HasNext,
- (void *(*)(PARCObject *, void *))_ccnxChunker_Next,
- NULL,
- (void *(*)(PARCObject *, void *))_ccnxChunker_GetElement,
- (void (*)(PARCObject *, void *))_ccnxChunker_Finish,
- (void (*)(const void *))_ccnxChunker_AssertValid);
-
- return iterator;
-}
-
-PARCIterator *
-parcBufferChunker_ReverseIterator(const PARCBufferChunker *chunker)
-{
- PARCIterator *iterator = parcIterator_Create((void *) chunker,
- (void *(*)(PARCObject *))_InitReverse,
- (bool (*)(PARCObject *, void *))_ccnxChunker_HasNext,
- (void *(*)(PARCObject *, void *))_ccnxChunker_Next,
- NULL,
- (void *(*)(PARCObject *, void *))_ccnxChunker_GetElement,
- (void (*)(PARCObject *, void *))_ccnxChunker_Finish,
- (void (*)(const void *))_ccnxChunker_AssertValid);
-
- return iterator;
-}
-
-size_t
-parcBufferChunker_GetChunkSize(const PARCBufferChunker *chunker)
-{
- return chunker->chunkSize;
-}