cheprep::ZipOutputStreamBuffer Class Reference

#include <ZipOutputStreamBuffer.h>

Inheritance diagram for cheprep::ZipOutputStreamBuffer:

Collaboration diagram for cheprep::ZipOutputStreamBuffer:

Public Member Functions
	ZipOutputStreamBuffer (std::streambuf *buffer)
int	overflow (int c)
void	closeEntry ()
void	close ()
void	putNextEntry (const std::string &name, bool compress)
void	setMethod (int method)
void	setComment (const std::string &comment)
virtual	~ZipOutputStreamBuffer ()
Public Member Functions inherited from cheprep::DeflateOutputStreamBuffer
	DeflateOutputStreamBuffer (std::streambuf *buffer)
void	init (bool compress)
void	finish ()
virtual	~DeflateOutputStreamBuffer ()

Private Attributes
std::string	comment
bool	closed
ZipEntry *	entry
std::vector< ZipEntry * > *	entries

Static Private Attributes
static const unsigned int	LOCSIG = 0x04034b50
static const unsigned int	EXTSIG = 0x08074b50
static const unsigned int	CENSIG = 0x02014b50
static const unsigned int	ENDSIG = 0x06054b50
static const unsigned int	VERSIONMADE = 0x0014
static const unsigned int	VERSIONEXTRACT = 0x0014
static const unsigned int	GENFLAG = 0x0008

Additional Inherited Members
Protected Member Functions inherited from cheprep::DeflateOutputStreamBuffer
int	overflow (int c=EOF)
bool	flushOut ()
void	putUI (unsigned int ui)
void	putUS (unsigned short us)
void	putUB (unsigned char ub)
void	putS (const std::string s)
std::streampos	pos ()
unsigned int	getSize ()
unsigned int	getCRC ()

Detailed Description

Definition at line 19 of file ZipOutputStreamBuffer.h.

Constructor & Destructor Documentation

ZipOutputStreamBuffer()

cheprep::ZipOutputStreamBuffer::ZipOutputStreamBuffer

(

std::streambuf *

buffer

)

Definition at line 17 of file ZipOutputStreamBuffer.cc.

        : DeflateOutputStreamBuffer(aBuffer), 
          comment("") {
        
        closed = false;
        entry = NULL;
        
        entries = new std::vector<ZipEntry*>();
    }

~ZipOutputStreamBuffer()

cheprep::ZipOutputStreamBuffer::~ZipOutputStreamBuffer ( )

virtual

Definition at line 140 of file ZipOutputStreamBuffer.cc.

                                                  {
        close();
    }

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Member Function Documentation

close()

void cheprep::ZipOutputStreamBuffer::close

(

)

Definition at line 49 of file ZipOutputStreamBuffer.cc.

                                      {
        if (closed) return;
        closeEntry();
        
        long dirStart = pos();
        for (std::vector<ZipEntry*>::iterator i=entries->begin(); i != entries->end(); i++) {
            entry = *i;
            putUI(CENSIG);
            putUS(VERSIONMADE);                   // made by version
            putUS(VERSIONEXTRACT);                // extraction version
            putUS(GENFLAG);                       // general purpose bit flag
            putUS(entry->method);                 // compression method
            putUS(entry->time);                   // time
            putUS(entry->date);                   // date
            putUI(entry->crc);                    // crc
            putUI(entry->csize);                  // compressed size
            putUI(entry->size);                   // uncompressed size
            putUS(entry->name.length());          // file name length
            putUS(0);                             // extra field length
            putUS(0);                             // file comment length
            putUS(0);                             // disk number start
            putUS(0);                             // internal file attributes
            putUI(0);                             // external file attributes
            putUI(entry->offset);                 // relative offset of local file header
            putS(entry->name);                    // file name
            
            // delete entry
            delete entry;
            entry = NULL;
        }
        // NOTE: pos()::operator- is ambiguous on gcc 4.0, so convert to long first
        long dirSize = (long)pos() - dirStart;
        putUI(ENDSIG);
        putUS(0);                             // number of this disk
        putUS(0);                             // number of the disk with the start of central directory
        putUS(entries->size());               // total number of entries in the central directory of this disk
        putUS(entries->size());               // total number of entries in the central directory
        putUI(dirSize);                       // size of the central directory
        putUI(dirStart);                      // offset of the start of central directory with respect to the starting disk number
        putUS(comment.length());              // .ZIP file comment length
        putS(comment);                        // .ZIP file comment
        
        delete entries;
        entries = NULL;
        closed = true;
    }

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closeEntry()

void cheprep::ZipOutputStreamBuffer::closeEntry

(

)

Definition at line 31 of file ZipOutputStreamBuffer.cc.

                                           {
        if (closed) return;
        if (entry == NULL) return;
        
        finish();
                
        entry->crc = getCRC();
        // NOTE: pos()::operator- is ambiguous on gcc 4.0, so convert to long first
        entry->csize = (long)pos() - entry->data;
        entry->size = getSize();
        putUI(EXTSIG);
        putUI(entry->crc);            // crc
        putUI(entry->csize);          // compressed size
        putUI(entry->size);           // uncompressed size
        entry = NULL;
    }

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overflow()

int cheprep::ZipOutputStreamBuffer::overflow

(

int

c

)

Definition at line 27 of file ZipOutputStreamBuffer.cc.

                                             {
        return DeflateOutputStreamBuffer::overflow(c);
    }

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putNextEntry()

void cheprep::ZipOutputStreamBuffer::putNextEntry	(	const std::string &	name,
		bool	compress
	)

Definition at line 96 of file ZipOutputStreamBuffer.cc.

                                                                                 {
        if (closed) return;
        
        closeEntry();

#ifdef CHEPREP_NO_ZLIB
        compress = false;
#endif
        init(compress);

        entry = new ZipEntry();
        entries->push_back(entry);
        
        entry->name = name;
        entry->method = compress ? 8 : 0;
        
        time_t ltime;
        time( &ltime );
        struct tm *utc = gmtime( &ltime );
        entry->date = (utc->tm_year - 80) << 9 | (utc->tm_mon + 1) << 5 | utc->tm_mday;
        entry->time = utc->tm_hour << 11 | utc->tm_min << 5 | utc->tm_sec >> 1;

        entry->offset = (long)pos();
        putUI(LOCSIG);                        // signature
        putUS(VERSIONEXTRACT);                // extraction version
        putUS(GENFLAG);                       // general purpose bit flag
        putUS(entry->method);                 // compression method
        putUS(entry->time);                   // time
        putUS(entry->date);                   // date
        putUI(0x00000000);                    // crc ATEND
        putUI(0x00000000);                    // compressed size ATEND
        putUI(0x00000000);                    // uncompressed size ATEND
        putUS(entry->name.length());          // file name length
        putUS(0);                             // extra field length
        putS(entry->name);                    // file name
        entry->data = (long)pos();
        entry->crc = 0;
    }

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setComment()

void cheprep::ZipOutputStreamBuffer::setComment

(

const std::string &

comment

)

Definition at line 135 of file ZipOutputStreamBuffer.cc.

                                                             {
        if (closed) return;
        comment = c;        
    }

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setMethod()

void cheprep::ZipOutputStreamBuffer::setMethod

(

int

method

)

Member Data Documentation

CENSIG

const unsigned int cheprep::ZipOutputStreamBuffer::CENSIG = 0x02014b50

staticprivate

Definition at line 48 of file ZipOutputStreamBuffer.h.

closed

bool cheprep::ZipOutputStreamBuffer::closed

private

Definition at line 42 of file ZipOutputStreamBuffer.h.

comment

std::string cheprep::ZipOutputStreamBuffer::comment

private

Definition at line 40 of file ZipOutputStreamBuffer.h.

ENDSIG

const unsigned int cheprep::ZipOutputStreamBuffer::ENDSIG = 0x06054b50

staticprivate

Definition at line 49 of file ZipOutputStreamBuffer.h.

entries

std::vector<ZipEntry*>* cheprep::ZipOutputStreamBuffer::entries

private

Definition at line 44 of file ZipOutputStreamBuffer.h.

entry

ZipEntry* cheprep::ZipOutputStreamBuffer::entry

private

Definition at line 43 of file ZipOutputStreamBuffer.h.

EXTSIG

const unsigned int cheprep::ZipOutputStreamBuffer::EXTSIG = 0x08074b50

staticprivate

Definition at line 47 of file ZipOutputStreamBuffer.h.

GENFLAG

const unsigned int cheprep::ZipOutputStreamBuffer::GENFLAG = 0x0008

staticprivate

Definition at line 53 of file ZipOutputStreamBuffer.h.

LOCSIG

const unsigned int cheprep::ZipOutputStreamBuffer::LOCSIG = 0x04034b50

staticprivate

Definition at line 46 of file ZipOutputStreamBuffer.h.

VERSIONEXTRACT

const unsigned int cheprep::ZipOutputStreamBuffer::VERSIONEXTRACT = 0x0014

staticprivate

Definition at line 52 of file ZipOutputStreamBuffer.h.

VERSIONMADE

const unsigned int cheprep::ZipOutputStreamBuffer::VERSIONMADE = 0x0014

staticprivate

Definition at line 51 of file ZipOutputStreamBuffer.h.

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

• ZipOutputStreamBuffer.h
• ZipOutputStreamBuffer.cc