cmn_FastZeroRecSearch Class Reference
[G_new_group]

#include <cmn_FastSearch.h>

Inheritance diagram for cmn_FastZeroRecSearch:

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Collaboration diagram for cmn_FastZeroRecSearch:

[legend]

List of all members.

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Detailed Description

This is a class for fast search of zeroes through buffer.

Definition at line 218 of file cmn_FastSearch.h.

Public Member Functions
	cmn_FastZeroRecSearch (int a_numberOfZeroes)
	cmn_FastZeroRecSearch (const char *const a_buffer_p, const int a_bufLen, int a_numberOfZeroes)
virtual	~cmn_FastZeroRecSearch ()
void	SetPattern (const string &a_pattern)
	set new search pattern, just to implement virtual method
void	SetNumberOfZeroes (const int a_num)
Int32_t	Find ()
	NOTE! if return value is grater than buffer then string was not found the return value is willing handled in this way, because of using same algorithem with merging buffers.
Public Attributes
	log_CLASSID_m
	Macro to add class name member s_className.

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Constructor & Destructor Documentation

cmn_FastZeroRecSearch::cmn_FastZeroRecSearch

(

int

a_numberOfZeroes

)

Definition at line 306 of file cmn_FastSearch.cpp.

References log_FUNC_m.

00308             :
00309             cmn_FastZeroSearch(NULL, 0, a_recLen)
00310 {
00311     log_FUNC_m(cmn_FastZeroRecSearch);
00312     //Empty
00313 } 
//============================================================================//

cmn_FastZeroRecSearch::cmn_FastZeroRecSearch	(	const char *const	a_buffer_p,
		const int	a_bufLen,
		int	a_numberOfZeroes
	)

Definition at line 317 of file cmn_FastSearch.cpp.

References log_FUNC_m.

00321             :
00322             cmn_FastZeroSearch(a_buffer_p, a_bufLen, a_recLen)
00323 {
00324     log_FUNC_m(cmn_FastZeroRecSearch);
00325     //Empty
00326 }
//============================================================================//

virtual cmn_FastZeroRecSearch::~cmn_FastZeroRecSearch

(

)

[inline, virtual]

Definition at line 229 of file cmn_FastSearch.h.

{};

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Member Function Documentation

void cmn_FastZeroRecSearch::SetPattern

(

const string &

a_pattern

)

[inline, virtual]

set new search pattern, just to implement virtual method

Reimplemented from cmn_FastZeroSearch.

Definition at line 239 of file cmn_FastSearch.h.

                                                     {
        m_numberOfZeroes = static_cast<UInt32_t>(a_pattern.length());
    };

void cmn_FastZeroRecSearch::SetNumberOfZeroes

(

const int

a_num

)

[inline]

Reimplemented from cmn_FastZeroSearch.

Definition at line 243 of file cmn_FastSearch.h.

{m_numberOfZeroes = a_num;};

Int32_t cmn_FastZeroRecSearch::Find

(

)

[virtual]

NOTE! if return value is grater than buffer then string was not found the return value is willing handled in this way, because of using same algorithem with merging buffers.

It's known how much buffer is need to be merged at front of next buffer.

Reimplemented from cmn_FastZeroSearch.

Definition at line 330 of file cmn_FastSearch.cpp.

References log_FUNC_m, cmn_FastSearch::m_buffer_p, cmn_FastSearch::m_bufLen, cmn_FastZeroSearch::m_numberOfZeroes, and zero.

                                    {
    log_FUNC_m(Find);

    register UInt32_t   patLen   = m_numberOfZeroes;
    register UInt32_t   patLen_1 = patLen - 1;

    register const char *p    = m_buffer_p + patLen_1;
    register const char *s    = m_buffer_p;

    register char    zero = 0;

    const char          *buff = m_buffer_p;

    const char *limit = buff + m_bufLen;
    while (p < limit) {                           
       while (*p == zero) {
           if (p == s) {
              return static_cast<Int32_t>(p - buff);
           }
           p--;
       }
       p = patLen_1 + (s += patLen);  // s = start of next rec and p = end of next record
    }
    return static_cast<Int32_t>( (p - buff - m_bufLen) - patLen );  // NOTE! if return value is negative then string was not found
}

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Member Data Documentation

cmn_FastZeroRecSearch::log_CLASSID_m

Macro to add class name member s_className.

Reimplemented from cmn_FastZeroSearch.

Definition at line 229 of file cmn_FastSearch.h.

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The documentation for this class was generated from the following files:

• cmn_FastSearch.h
• cmn_FastSearch.cpp