ASSA::Regexp Class Reference

Regexp class. More...

#include <Regexp.h>

Public Member Functions
	Regexp (const std::string &pattern_)
	Constructor.
	~Regexp ()
	Destructor.
int	match (const char *text_)
	Match an ASCII character string agains the pattern this class wraps.
const char *	get_error () const
	Return error message.
const char *	get_pattern () const
	Return the original pattern (uncompiled).

Private Attributes
char *	m_pattern
char *	m_error_msg
regex_t *	m_compiled_pattern

Detailed Description

Regexp class.

Class Regexp wraps regexp structure and associated library functions.

Definition at line 43 of file Regexp.h.

Constructor & Destructor Documentation

Regexp()

Regexp::Regexp

(

const std::string &

pattern_

)

Constructor.

Parameters

pattern_

Regular expression pattern

Definition at line 16 of file Regexp.cpp.

    :
    m_pattern (NULL),
    m_error_msg (new char [256]),
    m_compiled_pattern (new regex_t)
{
    trace_with_mask("Regexp::Regexp", REGEXP);
 
    m_pattern = new char [pattern_.size () + 1];
    ::strncpy (m_pattern, pattern_.c_str (), pattern_.size ());
    m_pattern [pattern_.size ()] = '\0';
 
    int ret = ::regcomp (m_compiled_pattern, m_pattern, REG_EXTENDED);
 
    if (ret != 0) {
        ::regerror (ret, m_compiled_pattern, m_error_msg, 256);
        DL((REGEXP,"regcomp(\"%s\") = %d\n", m_pattern, ret));
        DL((REGEXP,"error: \"%s\"\n", m_error_msg));
 
        delete [] m_pattern;
        m_pattern = NULL;
    }
}

References DL, m_compiled_pattern, m_error_msg, m_pattern, ASSA::REGEXP, and trace_with_mask.

~Regexp()

Regexp::~Regexp

(

)

Destructor.

Release all allocated resources.

Definition at line 41 of file Regexp.cpp.

{
    trace_with_mask("Regexp::~Regexp", REGEXP);
 
    if (m_pattern) {
        delete [] m_pattern;
    }
    if (m_error_msg) {
        delete [] m_error_msg;
    }
    ::regfree (m_compiled_pattern);
    delete (m_compiled_pattern);
}

References m_compiled_pattern, m_error_msg, m_pattern, ASSA::REGEXP, and trace_with_mask.

Member Function Documentation

get_error()

const char * ASSA::Regexp::get_error ( ) const

inline

Return error message.

Definition at line 64 of file Regexp.h.

{ return m_error_msg; }

References m_error_msg.

get_pattern()

const char * ASSA::Regexp::get_pattern ( ) const

inline

Return the original pattern (uncompiled).

Definition at line 68 of file Regexp.h.

{ return m_pattern; }

References m_pattern.

match()

int Regexp::match

(

const char *

text_

)

Match an ASCII character string agains the pattern this class wraps.

Parameters

text_

Input text to match against the pattern.

Returns

0 if text_ matches the pattern; -1 if not.

regexec(3) returns zero for a successful match or REG_NOMATCH for failure.

Definition at line 57 of file Regexp.cpp.

{
    trace_with_mask("Regexp::match", REGEXP);
 
    if (text_ == NULL || m_pattern == NULL) {
        return -1;
    }

    int ret = ::regexec (m_compiled_pattern, text_, 0, NULL, 0);
 
    if (ret != 0) {
        ::regerror (ret, m_compiled_pattern, m_error_msg, 256);
        DL((REGEXP,"regexec(\"%s\") = %d\n", text_, ret));
        DL((REGEXP,"pattern: \"%s\"\n", m_pattern));
        DL((REGEXP,"error: \"%s\"\n", m_error_msg));
    }
 
    return (ret == 0 ? 0 : -1);
}

References DL, m_compiled_pattern, m_error_msg, m_pattern, ASSA::REGEXP, and trace_with_mask.

Member Data Documentation

m_compiled_pattern

regex_t* ASSA::Regexp::m_compiled_pattern

private

Definition at line 73 of file Regexp.h.

Referenced by match(), Regexp(), and ~Regexp().

m_error_msg

char* ASSA::Regexp::m_error_msg

private

Definition at line 72 of file Regexp.h.

Referenced by get_error(), match(), Regexp(), and ~Regexp().

m_pattern

char* ASSA::Regexp::m_pattern

private

Definition at line 71 of file Regexp.h.

Referenced by get_pattern(), match(), Regexp(), and ~Regexp().

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

• Regexp.h
• Regexp.cpp