QGString Class Reference

#include <qgstring.h>

Public Member Functions
	QGString ()
	QGString (uint size)
	QGString (const QGString &s)
	QGString (const char *str)
	~QGString ()
bool	resize (uint newlen)
bool	enlarge (uint newlen)
void	setLen (uint newlen)
QGString &	operator= (const QGString &s)
QGString &	operator= (const char *str)
QGString &	operator+= (const QGString &s)
QGString &	operator+= (const char *str)
QGString &	operator+= (char c)
bool	isNull () const
bool	isEmpty () const
uint	length () const
uint	size () const
char *	data () const
bool	truncate (uint pos)
	operator const char * () const
char &	at (uint index) const
char &	operator[] (int i) const

Private Attributes
char *	m_data
uint	m_len
uint	m_memSize

Detailed Description

This is an alternative implementation of QCString.

Definition at line 19 of file qgstring.h.

Constructor & Destructor Documentation

QGString::QGString

(

)

Definition at line 27 of file qgstring.cpp.

  : m_data(0), m_len(0), m_memSize(0) 
{
  DBG_STR(("%p: QGString::QGString() %d:%s\n",this,m_len,m_data?m_data:"<none>"));
} 

QGString::QGString

(

uint

size

)

Definition at line 33 of file qgstring.cpp.

{
  if (size==0)
  {
    m_data=0;
    m_len=0;
  }
  else
  {
    m_memSize = ROUND_SIZE(size+1);
    m_data = (char*)malloc(m_memSize);
    memset(m_data,' ',size);
    m_data[size]='\0';
    m_len=size;
  }
  DBG_STR(("%p: QGString::QGString(uint size=%d) %d:%s\n",
      this,size,m_len,m_data?m_data:"<none>"));
}

QGString::QGString

(

const QGString &

s

)

Definition at line 52 of file qgstring.cpp.

{ 
  if (s.m_memSize==0)
  {
    m_data    = 0;
    m_len     = 0;
    m_memSize = 0;
  }
  else
  {
    m_data    = (char *)malloc(s.m_memSize); 
    m_len     = s.m_len;
    m_memSize = s.m_memSize;
    qstrcpy(m_data,s.m_data);
  }
  DBG_STR(("%p: QGString::QGString(const QGString &) %d:%s\n",this,m_len,m_data?m_data:"<none>"));
} 

QGString::QGString

(

const char *

str

)

Definition at line 70 of file qgstring.cpp.

{
  if (str==0)
  {
    m_data=0;
    m_len=0;
    m_memSize=0;
  }
  else
  {
    m_len = qstrlen(str);
    m_memSize = ROUND_SIZE(m_len+1);
    assert(m_memSize>=m_len+1);
    m_data = (char *)malloc(m_memSize);
    qstrcpy(m_data,str);
  }
  DBG_STR(("%p: QGString::QGString(const char *) %d:%s\n",this,m_len,m_data?m_data:"<none>"));
}

QGString::~QGString

(

)

Definition at line 89 of file qgstring.cpp.

{ 
  free(m_data); 
  m_data=0; 
  DBG_STR(("%p: QGString::~QGString() %d:%s\n",this,m_len,m_data?m_data:"<none>"));
}

Member Function Documentation

char& QGString::at ( uint  index ) const

inline

Definition at line 45 of file qgstring.h.

{ return m_data[index]; }

char* QGString::data ( ) const

inline

Definition at line 42 of file qgstring.h.

{ return m_data; }

bool QGString::enlarge

(

uint

newlen

)

Definition at line 127 of file qgstring.cpp.

{
  if (newlen==0)
  {
    if (m_data) { free(m_data); m_data=0; }
    m_memSize=0;
    m_len=0;
    return TRUE;
  }
  uint newMemSize = ROUND_SIZE(newlen+1);
  if (newMemSize==m_memSize) return TRUE;
  m_memSize = newMemSize;
  if (m_data==0)
  {
    m_data = (char *)malloc(m_memSize);
  }
  else
  {
    m_data = (char *)realloc(m_data,m_memSize);
  }
  if (m_data==0) 
  {
    return FALSE;
  }
  m_data[newlen-1]='\0';
  if (m_len>newlen) m_len=newlen;
  return TRUE;
}

bool QGString::isEmpty ( ) const

inline

Definition at line 39 of file qgstring.h.

{ return m_len==0; }

bool QGString::isNull ( ) const

inline

Definition at line 38 of file qgstring.h.

{ return m_data==0; }

uint QGString::length ( ) const

inline

Definition at line 40 of file qgstring.h.

{ return m_len; }

QGString::operator const char * ( ) const

inline

Definition at line 44 of file qgstring.h.

{ return (const char *)data(); }

QGString & QGString::operator+=

(

const QGString &

s

)

Definition at line 203 of file qgstring.cpp.

{
  if (s.m_memSize==0) return *this;
  uint len1 = length();
  uint len2 = s.length();
  uint memSize = ROUND_SIZE(len1 + len2 + 1);
  assert(memSize>=len1+len2+1);
  char *newData = memSize!=m_memSize ? (char*)realloc( m_data, memSize ) : m_data;
  m_memSize = memSize;
  if (newData)
  {
    m_data = newData;
    memcpy( m_data + len1, s, len2 + 1 );
  }
  m_len = len1+len2;
  DBG_STR(("%p: QGString::operator+=(const QGString &) %d:%s\n",this,m_len,m_data?m_data:"<none>"));
  return *this;
}

QGString & QGString::operator+=

(

const char *

str

)

Definition at line 222 of file qgstring.cpp.

{
  if (!str) return *this;
  uint len1 = length();
  uint len2 = qstrlen(str);
  uint memSize = ROUND_SIZE(len1 + len2 + 1);
  assert(memSize>=len1+len2+1);
  char *newData = memSize!=m_memSize ? (char *)realloc( m_data, memSize ) : m_data;
  m_memSize = memSize;
  if (newData)
  {
    m_data = newData;
    memcpy( m_data + len1, str, len2 + 1 );
  }
  m_len+=len2;
  DBG_STR(("%p: QGString::operator+=(const char *) %d:%s\n",this,m_len,m_data?m_data:"<none>"));
  return *this;
}

QGString & QGString::operator+=

(

char

c

)

Definition at line 241 of file qgstring.cpp.

{
  uint len = m_len;
  uint memSize = ROUND_SIZE(len+2);
  assert(memSize>=len+2);
  char *newData = memSize!=m_memSize ? (char *)realloc( m_data, memSize ) : m_data;
  m_memSize = memSize;
  if (newData)
  {
    m_data = newData;
    m_data[len] = c;
    m_data[len+1] = '\0';
  }
  m_len++;
  DBG_STR(("%p: QGString::operator+=(char s) %d:%s\n",this,m_len,m_data?m_data:"<none>"));
  return *this;
}

QGString & QGString::operator=

(

const QGString &

s

)

Definition at line 161 of file qgstring.cpp.

{
  if (m_data) free(m_data);
  if (s.m_memSize==0) // null string
  {
    m_data    = 0;
    m_len     = 0;
    m_memSize = 0;
  }
  else
  {
    m_len     = s.m_len;
    m_memSize = s.m_memSize;
    m_data    = (char*)malloc(m_memSize);
    qstrcpy(m_data,s.m_data);
  }
  DBG_STR(("%p: QGString::operator=(const QGString &%p) %d:%s\n",
      this,&s,m_len,m_data?m_data:"<none>"));
  return *this;
}

QGString & QGString::operator=

(

const char *

str

)

Definition at line 182 of file qgstring.cpp.

{ 
  if (m_data) free(m_data);
  if (str==0) // null string
  {
    m_data    = 0;
    m_len     = 0;
    m_memSize = 0;
  }
  else
  {
    m_len     = qstrlen(str);
    m_memSize = ROUND_SIZE(m_len+1);
    assert(m_memSize>=m_len+1);
    m_data    = (char*)malloc(m_memSize);
    qstrcpy(m_data,str);
  }
  DBG_STR(("%p: QGString::operator=(const char *) %d:%s\n",this,m_len,m_data?m_data:"<none>"));
  return *this;
}

char& QGString::operator[] ( int  i ) const

inline

Definition at line 46 of file qgstring.h.

{ return at(i); }

bool QGString::resize

(

uint

newlen

)

Definition at line 96 of file qgstring.cpp.

{
  m_len = 0;
  if (newlen==0)
  {
    if (m_data) { free(m_data); m_data=0; }
    m_memSize=0;
    DBG_STR(("%p: 1.QGString::resize() %d:%s\n",this,m_len,m_data?m_data:"<none>"));
    return TRUE;
  }
  m_memSize = ROUND_SIZE(newlen+1);
  assert(m_memSize>=newlen+1);
  if (m_data==0)
  {
    m_data = (char *)malloc(m_memSize);
  }
  else
  {
    m_data = (char *)realloc(m_data,m_memSize);
  }
  if (m_data==0) 
  {
    DBG_STR(("%p: 2.QGString::resize() %d:%s\n",this,m_len,m_data?m_data:"<none>"));
    return FALSE;
  }
  m_data[newlen]='\0';
  m_len = qstrlen(m_data);
  DBG_STR(("%p: 3.QGString::resize() %d:%s\n",this,m_len,m_data?m_data:"<none>"));
  return TRUE;
}

void QGString::setLen

(

uint

newlen

)

Definition at line 156 of file qgstring.cpp.

{
  m_len = newlen<=m_memSize ? newlen : m_memSize;
}

uint QGString::size ( ) const

inline

Definition at line 41 of file qgstring.h.

{ return m_memSize; }

bool QGString::truncate ( uint  pos )

inline

Definition at line 43 of file qgstring.h.

{ return resize(pos+1); }

Member Data Documentation

char* QGString::m_data

private

Definition at line 49 of file qgstring.h.

uint QGString::m_len

private

Definition at line 50 of file qgstring.h.

uint QGString::m_memSize

private

Definition at line 51 of file qgstring.h.

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

• doxygen-1.8.11/qtools/qgstring.h
• doxygen-1.8.11/qtools/qgstring.cpp