append data to a vector

[mosfet]

Hi,

I am trying to rewrite a c++ class wrapping wininet (windows ftp/http
lib) functions.
I do the folllowing to get the response :


while ((return_code = InternetQueryDataAvailable(hReq,
&bytes_available,0, 0) != 0) &&
bytes_available 0)
{
vector<charresponse_buffer(bytes_available);
DWORD size_read;

if ((return_code = InternetReadFile(hReq, &response_buffer[0],
bytes_available, &size_read) != 0) &&
size_read 0)
{
total_read += size_read;
m_RawData += response_buffer; //m_RawData is also a vector<char>

}
else
{
break;
}
}
As you can see I store data read in vector response_buffer and I would
like to append it to my global buffer so I tried :

m_RawData += response_buffer; but it 's not possible...
How can I do it ?

[Victor Bazarov]

mosfet wrote:

Hi,

I am trying to rewrite a c++ class wrapping wininet (windows ftp/http
lib) functions.
I do the folllowing to get the response :


while ((return_code = InternetQueryDataAvailable(hReq,
&bytes_available,0, 0) != 0) &&
bytes_available 0)
{
vector<charresponse_buffer(bytes_available);
DWORD size_read;

if ((return_code = InternetReadFile(hReq, &response_buffer[0],
bytes_available, &size_read) != 0) &&
size_read 0)
{
total_read += size_read;
m_RawData += response_buffer; //m_RawData is also a vector<char>

}
else
{
break;
}
}
As you can see I store data read in vector response_buffer and I would
like to append it to my global buffer so I tried :

m_RawData += response_buffer; but it 's not possible...
How can I do it ?

What makes you think that += is defined for vector<char>? Have you
tried RTFM? It helps, you know.

Try

m_RawData.insert(m_RawData.end(),
response_buffer.begin(), response_buffer.end());

V
--
Please remove capital 'A's when replying by e-mail
I do not respond to top-posted replies, please don't ask

[=?UTF-8?B?RXJpayBXaWtzdHLDtm0=?=]

On 2007-09-28 15:18, mosfet wrote:

Hi,

I am trying to rewrite a c++ class wrapping wininet (windows ftp/http
lib) functions.
I do the folllowing to get the response :


while ((return_code = InternetQueryDataAvailable(hReq,
&bytes_available,0, 0) != 0) &&
bytes_available 0)
{
vector<charresponse_buffer(bytes_available);
DWORD size_read;

if ((return_code = InternetReadFile(hReq, &response_buffer[0],
bytes_available, &size_read) != 0) &&
size_read 0)
{
total_read += size_read;
m_RawData += response_buffer; //m_RawData is also a vector<char>

}
else
{
break;
}
}
As you can see I store data read in vector response_buffer and I would
like to append it to my global buffer so I tried :

m_RawData += response_buffer; but it 's not possible...
How can I do it ?

m_RawData.insert(response_buffer.begin(), response_buffer.end(),
m_RawData.end());

This will insert all elements in response_buffer at the end of
m_RawData. Notice that if response_buffer is large it you might gain
some speed by doing

m_RawData.reserve(m_RawData.size + response_Buffer.size());

before inserting.

--
Erik Wikström

[Victor Bazarov]

Erik Wikström wrote:

[..]

Couple of nits:

m_RawData.insert(response_buffer.begin(), response_buffer.end(),
m_RawData.end());

m_RawData.end() has to be the first argument. The trouble is, if the
two vectors are of the same type, this will even compile, but most
likely will have undefined behaviour.

>
This will insert all elements in response_buffer at the end of
m_RawData. Notice that if response_buffer is large it you might gain
some speed by doing

m_RawData.reserve(m_RawData.size + response_Buffer.size());

m_RawData.reserve(m_RawData.size() + ..

(size is a function, needs the argument list)

>
before inserting.

V
--
Please remove capital 'A's when replying by e-mail
I do not respond to top-posted replies, please don't ask

[=?UTF-8?B?RXJpayBXaWtzdHLDtm0=?=]

On 2007-09-28 16:11, Victor Bazarov wrote:

Erik Wikstr�m wrote:

>[..]

Couple of nits:

> m_RawData.insert(response_buffer.begin(), response_buffer.end(),
m_RawData.end());

m_RawData.end() has to be the first argument. The trouble is, if the
two vectors are of the same type, this will even compile, but most
likely will have undefined behaviour.

Yes, the last two iterators must not be iterators into the container on
which insert was called.

--
Erik Wikström

[duane hebert]

"mosfet" <jo******@anonymous.orgwrote in message
news:46***********************@news.free.fr...

while ((return_code = InternetQueryDataAvailable(hReq, &bytes_available,0,
0) != 0) &&
bytes_available 0)
{
vector<charresponse_buffer(bytes_available);
DWORD size_read;

if ((return_code = InternetReadFile(hReq, &response_buffer[0],
bytes_available, &size_read) != 0) &&
size_read 0)
{
total_read += size_read;
m_RawData += response_buffer; //m_RawData is also a vector<char>

}
else
{
break;
}
}
As you can see I store data read in vector response_buffer and I would
like to append it to my global buffer so I tried :

m_RawData += response_buffer; but it 's not possible...
How can I do it ?

What type is m_RawData?

[Howard]

"duane hebert" <sp**@flarn.comwrote in message
news:Hy*******************@weber.videotron.net...

>
"mosfet" <jo******@anonymous.orgwrote in message
news:46***********************@news.free.fr...

>while ((return_code = InternetQueryDataAvailable(hReq,
&bytes_available,0, 0) != 0) &&
bytes_available 0)
{
vector<charresponse_buffer(bytes_available);
DWORD size_read;

if ((return_code = InternetReadFile(hReq, &response_buffer[0],
bytes_available, &size_read) != 0) &&
size_read 0)
{
total_read += size_read;
m_RawData += response_buffer; //m_RawData is also a vector<char>

}
else
{
break;
}
}
As you can see I store data read in vector response_buffer and I would
like to append it to my global buffer so I tried :

m_RawData += response_buffer; but it 's not possible...
How can I do it ?

What type is m_RawData?

You might want to read the whole post again... especially where it tells you
what type that is. :-)

-Howard

[duane hebert]

>>As you can see I store data read in vector response_buffer and I would

>>like to append it to my global buffer so I tried :

m_RawData += response_buffer; but it 's not possible...
How can I do it ?

What type is m_RawData?

You might want to read the whole post again... especially where it tells
you what type that is. :-)

From the beginning of this thread, all that I see is the line
above referring to it as "my global buffer" but I don't
see it mentioned that it's also a vector or whatever.

[Howard]

"duane hebert" <sp**@flarn.comwrote in message
news:hQ*******************@wagner.videotron.net...

>>>As you can see I store data read in vector response_buffer and I would
like to append it to my global buffer so I tried :

m_RawData += response_buffer; but it 's not possible...
How can I do it ?

What type is m_RawData?

You might want to read the whole post again... especially where it tells
you what type that is. :-)

From the beginning of this thread, all that I see is the line
above referring to it as "my global buffer" but I don't
see it mentioned that it's also a vector or whatever.

in the code, almost at the end...

>m_RawData += response_buffer; //m_RawData is also a vector<char>

[Howard]

"duane hebert" <sp**@flarn.comwrote in message
news:hQ*******************@wagner.videotron.net...

>>>As you can see I store data read in vector response_buffer and I would
like to append it to my global buffer so I tried :

m_RawData += response_buffer; but it 's not possible...
How can I do it ?

What type is m_RawData?

You might want to read the whole post again... especially where it tells
you what type that is. :-)

From the beginning of this thread, all that I see is the line
above referring to it as "my global buffer" but I don't
see it mentioned that it's also a vector or whatever.

It's in a comment, right about the middle of the post:

m_RawData += response_buffer; //m_RawData is also a vector<char>

-Howard