C++ Attachment::setAttachArea方法代码示例

Attachment*
AttachArea::addAttachment(
    DtMail::Message *msg,
    DtMail::BodyPart *lastAttBP,
    String name,
    DtMailBuffer buf
)
{
    DtMailEnv mail_error;
    DtMail::BodyPart * bp = NULL;

    if (!name)
	name = "noname";

    mail_error.clear();

    bp = msg->newBodyPart(mail_error, lastAttBP);
    bp->setContents(mail_error, buf.buffer, buf.size, NULL, name, 0, NULL);

    Attachment *attachment = new Attachment(this,
					    name,
					    bp,
					    _iconCount + 1);
    attachment->setAttachArea(this);
    attachment->initialize();
    addToList(attachment);

    // Update the display.  The Compose Window needs immediate update.

    this->manageList();

    return(attachment);
}

//.........这里部分代码省略.........
	delete [] errormsg;
	return(NULL);
    }

    fd = SafeOpen(filename, O_RDONLY);
	
    if (fd < 0) {
	sprintf(buf, GETMSG(DT_catd, 3, 35, "Unable to open %s."), filename);
        helpId = DTMAILHELPNOOPEN;
	answer = this->handleErrorDialog(GETMSG(DT_catd, 1, 82, "Mailer"), 
					 buf,
                                         helpId);
	delete [] buf;
	delete [] errormsg;
	return(NULL);
    }

    int page_size = (int)sysconf(_SC_PAGESIZE);
    size_t map_size = (size_t) (s.st_size + 
				    (page_size - (s.st_size % page_size)));
    char * map;

#if defined(__osf__)
    // This version of mmap does NOT allow requested length to be
    // greater than the file size ...  in contradiction to the
    // documentation (don't round up).
    map = (char *) mmap(0, s.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
#else
    map = (char *) mmap(0, map_size, PROT_READ, MAP_PRIVATE, fd, 0);
#endif

    if (map == (char *)-1) {
	// We could not map it for some reason. Let's just read it into
	// buffer and pass it to XmText.
	//

	buffer = new char[s.st_size + 1];

	if (!buffer) {
            sprintf(buf, "%s",
		    GETMSG(DT_catd, 3, 36, "Unable to allocate memory."));
            helpId = DTMAILHELPNOALLOCMEM;
	    answer = this->handleErrorDialog(GETMSG(DT_catd, 1, 83, "Mailer"), 
					     buf,
                                             helpId);
	    return(NULL);
	}

	if (read(fd, buffer, (unsigned int) s.st_size) < 0) {
	    SafeClose(fd);
	    return(NULL);
	}
	buffer[s.st_size] = 0;
	bp->setContents(
		mail_error, buffer, s.st_size, NULL, fname_start, 0, NULL
		);
    }
    else {
	// We now have a mapped file. XmText wants a zero terminated
	// buffer. We get luck with mmap because unless the file is
	// an even page size, we will have some zero fill bytes that
	// are legal to access.
	//
	// Of course in the case of an even page size file we must
	// copy the buffer, terminate it and then give it to XmText.
	//
	bp->setContents(
	    mail_error, map, s.st_size, NULL, fname_start, 0, NULL
	);
	munmap(map, map_size);
    }
    SafeClose(fd);


    // _iconCount + 1 because iconCount starts at 0 and we want 
    // attachmentCount to begin at 1.  attachmentCount is set to be
    // in the widget's userData.  


    if(name)
	lbl = strdup(name);
    else {
	if(strchr(filename, '/') == NULL) // The name does not include a slash
	    lbl = strdup(filename);
	else			   // The name does include a slash
	    lbl = strdup(strrchr(filename, '/')+1);
    }    
    Attachment *attachment = new Attachment(this, lbl, bp, _iconCount + 1);
    attachment->setAttachArea(this);
    attachment->initialize();
    addToList( attachment );

    // Update the display.  The Compose Window needs immediate update.

    this->manageList();

    delete [] buf;
    delete [] errormsg;
    return(attachment);
}