scans_offset.c File Reference

Implements Phase III scans for detecting offsets within a buffer. More...

#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <math.h>
#include "fret.h"
#include "common.h"
#include "scans_offset.h"
#include "gramstore.h"

Include dependency graph for scans_offset.c:

Data Structures
struct	State
	Describes the internal state of a Scan. More...
Functions
bool	scanOffsetsByte (const unsigned char *const pBuffer, const size_t bufLen, void *const pState, const BufferId bufferId, Gram *const pResultGram)
bool	scanOffsetsShort (const unsigned char *const pBuffer, const size_t bufLen, void *const pState, const BufferId bufferId, Gram *const pResultGram)
bool	scanOffsetsLong (const unsigned char *const pBuffer, const size_t bufLen, void *const pState, const BufferId bufferId, Gram *const pResultGram)
void *	newStateOffsets (void)

---

Detailed Description

Implements Phase III scans for detecting offsets within a buffer.

Implements Scans that looks for byte, short and long offsets with the buffer.

---

Function Documentation

void* newStateOffsets (  void   )

Allocates a new State variable that stores the state of a Scan.

bool scanOffsetsByte (  const unsigned char *const   pBuffer, const size_t  bufLen, void *const   pState, const BufferId  bufferId, Gram *const   pResultGram )

Function scans a buffer, looking for values that may indicate an offset to the beginning of an already identified or undiscovered Gram. This scan examines the values stored in 1 byte.

bool scanOffsetsLong (  const unsigned char *const   pBuffer, const size_t  bufLen, void *const   pState, const BufferId  bufferId, Gram *const   pResultGram )

Function scans a buffer, looking for values that may indicate an offset to the beginning of an already identified or undiscovered Gram. This Scan examines the values stored in 4 bytes.

bool scanOffsetsShort (  const unsigned char *const   pBuffer, const size_t  bufLen, void *const   pState, const BufferId  bufferId, Gram *const   pResultGram )

Function scans a buffer, looking for values that may indicate an offset to the beginning of an already identified or undiscovered Gram. This scan examines the values stored in 2 bytes.

---