ozstream Class Reference

#include <zstream.h>

Public Member Functions
	ozstream ()
	ozstream (FILE *fp, int level=Z_DEFAULT_COMPRESSION)
	ozstream (const char *name, int level=Z_DEFAULT_COMPRESSION)
	~ozstream ()
void	open (const char *name, int level=Z_DEFAULT_COMPRESSION)
void	open (FILE *fp, int level=Z_DEFAULT_COMPRESSION)
int	close ()
int	write (const void *buf, size_t len)
int	flush (int _flush)
const char *	error (int *errnum)
gzFile	fp ()
ostream &	os ()
void	os_flush ()

Private Attributes
gzFile	m_fp
ostrstream *	m_os

Detailed Description

Definition at line 155 of file zstream.h.

Constructor & Destructor Documentation

ozstream() [1/3]

ozstream::ozstream ( )

inline

Definition at line 158 of file zstream.h.

                   : m_fp(0), m_os(0) {
        }

ozstream() [2/3]

ozstream::ozstream ( FILE *  fp, int  level = Z_DEFAULT_COMPRESSION  )

inline

Definition at line 160 of file zstream.h.

            : m_fp(0), m_os(0) {
            open(fp, level);
        }

References fp(), level, and open().

ozstream() [3/3]

ozstream::ozstream ( const char *  name, int  level = Z_DEFAULT_COMPRESSION  )

inline

Definition at line 164 of file zstream.h.

            : m_fp(0), m_os(0) {
            open(name, level);
        }

References level, and open().

~ozstream()

ozstream::~ozstream ( )

inline

Definition at line 168 of file zstream.h.

                    {
            close();
        }

References close().

Member Function Documentation

close()

int ozstream::close ( )

inline

Definition at line 198 of file zstream.h.

                    {
            if (m_os) {
                ::gzwrite(m_fp, m_os->str(), m_os->pcount());
                delete[] m_os->str(); delete m_os; m_os = 0;
            }
            int r = ::gzclose(m_fp); m_fp = 0; return r;
        }

References gzclose(), gzwrite(), m_fp, m_os, and r.

Referenced by open(), and ~ozstream().

error()

const char* ozstream::error ( int *  errnum )

inline

Definition at line 230 of file zstream.h.

                                       {
            return ::gzerror(m_fp, errnum);
        }

References gzerror(), and m_fp.

flush()

int ozstream::flush ( int  _flush )

inline

Definition at line 219 of file zstream.h.

                              {
            os_flush();
            return ::gzflush(m_fp, _flush);
        }

References gzflush(), m_fp, and os_flush().

fp()

gzFile ozstream::fp ( )

inline

Definition at line 234 of file zstream.h.

{ return m_fp; }

References m_fp.

Referenced by open(), operator<(), ozstream(), and write().

open() [1/2]

void ozstream::open ( const char *  name, int  level = Z_DEFAULT_COMPRESSION  )

inline

Definition at line 177 of file zstream.h.

                                                                       {
            char mode[4] = "wb\0";
            if (level != Z_DEFAULT_COMPRESSION) mode[2] = '0'+level;
            if (m_fp) close();
            m_fp = ::gzopen(name, mode);
        }

References close(), gzopen(), level, m_fp, and Z_DEFAULT_COMPRESSION.

Referenced by ozstream().

open() [2/2]

void ozstream::open ( FILE *  fp, int  level = Z_DEFAULT_COMPRESSION  )

inline

Definition at line 186 of file zstream.h.

                                                               {
            SET_BINARY_MODE(fp);
            char mode[4] = "wb\0";
            if (level != Z_DEFAULT_COMPRESSION) mode[2] = '0'+level;
            if (m_fp) close();
            m_fp = ::gzdopen(fileno(fp), mode);
        }

References close(), fp(), gzdopen(), level, m_fp, SET_BINARY_MODE, and Z_DEFAULT_COMPRESSION.

os()

ostream& ozstream::os ( )

inline

Definition at line 236 of file zstream.h.

                      {
            if (m_os == 0) m_os = new ostrstream;
            return *m_os;
        }

References m_os.

Referenced by operator<<().

os_flush()

void ozstream::os_flush ( )

inline

Definition at line 241 of file zstream.h.

                        {
            if (m_os && m_os->pcount()>0) {
                ostrstream* oss = new ostrstream;
                oss->fill(m_os->fill());
                oss->flags(m_os->flags());
                oss->precision(m_os->precision());
                oss->width(m_os->width());
                ::gzwrite(m_fp, m_os->str(), m_os->pcount());
                delete[] m_os->str(); delete m_os; m_os = oss;
            }
        }

References gzwrite(), m_fp, and m_os.

Referenced by flush(), and operator<<().

write()

int ozstream::write ( const void *  buf, size_t  len  )

inline

Definition at line 208 of file zstream.h.

                                               {
            return ::gzwrite(m_fp, (voidp) buf, len);
        }

References gzwrite(), len, and m_fp.

Member Data Documentation

m_fp

gzFile ozstream::m_fp

private

Definition at line 254 of file zstream.h.

Referenced by close(), error(), flush(), fp(), open(), os_flush(), and write().

m_os

ostrstream* ozstream::m_os

private

Definition at line 255 of file zstream.h.

Referenced by close(), os(), and os_flush().

---

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

• subprojects/zlib-1.2.12/contrib/iostream2/zstream.h