std::ostringstr eam and \r\n

Olaf van der Spek

Hi,

I'm using ostringstream and I'd like to generate \r\n line ends
instead of \n ones.
Is there a flag for this?
Or should I just insert the \r myself?

May 3 '06 #1

Subscribe Reply

4526

Tom Widmer

Olaf van der Spek wrote:

Hi,

I'm using ostringstream and I'd like to generate \r\n line ends
instead of \n ones.
Is there a flag for this?
No, only for file streams.
Or should I just insert the \r myself?

Yes.

Tom

May 4 '06 #2

Tilman Kuepper

Hello Olaf,

I'm using ostringstream and I'd like to generate \r\n line ends
instead of \n ones. Is there a flag for this?

I don't think there is a flag...

If you are on a Windows box, "\n" will be converted to "\r\n" when
writing ***to a file*** (that is opened in "text mode"). And vice versa.
If you really need character-strings with "\r\n" line endings (why?)
you would have to convert the line-endings "manually".

Please note that line-endings are platform-specific; IIRC Windows
uses "\r\n", Linux "\n", Macintosh "\r" etc. Thus, you better just
open your text files in "text mode" and let the Standard Libary
(or the operating system) do The Right Thing (tm).

Best regards,
Tilman

May 4 '06 #3

Olaf van der Spek

On Thu, 4 May 2006 14:39:27 +0200, "Tilman Kuepper"
<ti************ @nexgo.de> wrote:

Hello Olaf,
I'm using ostringstream and I'd like to generate \r\n line ends
instead of \n ones. Is there a flag for this?
I don't think there is a flag...

If you are on a Windows box, "\n" will be converted to "\r\n" when
writing ***to a file*** (that is opened in "text mode"). And vice versa.
If you really need character-strings with "\r\n" line endings (why?)
you would have to convert the line-endings "manually".

I'm first writing the document to memory in my own code and then to
file via MFC.
Please note that line-endings are platform-specific; IIRC Windows
uses "\r\n", Linux "\n", Macintosh "\r" etc. Thus, you better just
open your text files in "text mode" and let the Standard Libary
(or the operating system) do The Right Thing (tm).

Best regards,
Tilman

May 4 '06 #4

Old Wolf

Olaf van der Spek wrote:

I'm using ostringstream and I'd like to generate \r\n line ends
instead of \n ones. Is there a flag for this?

I'm first writing the document to memory in my own code and then to
file via MFC.

You should instruct the MFC stuff to open the file in text mode.

May 4 '06 #5

Similar topics

3026

[C++] strange problem with std::ostringstream

by: Eric Boutin | last post by:

Hi ! I have a strange problem with a std::ostringstream.. code : #include <sstream> /*...*/ std::ostringstream ss(); ss << "\"\"" << libpath << "\"\" \"\"" << argfilename << "\"\" \"\"" << outfilename << "\"\""; //line 75

C / C++

2805

std::vector<char> or std::ostringstream

by: Chris | last post by:

Hi, I'm playing/developing a simple p2p file sharing client for an existing protocol. A 2 second description of the protocol is Message Length = int, 4 bytes Message Code = int, 4 bytes Data

C / C++

4847

std::ostringstream, urgent

by: Christopher Benson-Manica | last post by:

Is there anything that one can do to a std::ostringstream that would make its destructor explode? I'm basically doing { std::ostringstream ss, msg; // do BUNCHES of stuff with ss and msg // use ss.str() and msg.str(), apparently successfully

C / C++

2369

std::ostringstream bizarre behaviour. Please help!

by: Simon Pryor | last post by:

I am having some strange problems using std::ostringstream. The simple stuff works okay, but trying to use: std::ostringstream::str(const std::string&) or: std::ostringstream::ostringstream(const std::string&) Gives some weird results on both Solaris & Linux. Either that or I'm missing something. I've made a simple program to

C / C++

2380

Piping std::cout to a std::ostringstream.

by: Jason Heyes | last post by:

I would like to have std::cout redirect its output to a std::ostringstream. Can this be done? Help is appreciated.

C / C++

2209

Why std::ostringstream inserts number group delimeter and how to disable this mode?

by: Voronkov Konstantin | last post by:

Hello all! std::ostringstream stream; stream << 8080; std::string str = stream.str(); // str == "8 080" The code shown above in mine big program result the str variable value to

C / C++

3553

std::ostringstream

by: bob | last post by:

For reasons that are irrelevant , we cannot use sprintf to do conversions between doubles, ints etc. to char*. We're using the std::ostringstream type. Basically we have a function that takes a double and needs to store a string representation of it into a vector of strings. ... something like this; void pussy::(const double d) { std::ostringstream strm;

C / C++

8376

std::string and std::ostringstream performances

by: Bala2508 | last post by:

Hi, I have a C++ application that extensively uses std::string and std::ostringstream in somewhat similar manner as below std::string msgHeader; msgHeader = "<"; msgHeader += a; msgHeader += "><";

C / C++

5309

std::ostringstream & LC_NUMERIC

by: mathieu | last post by:

Hi, I am playing with the following C++ piece of code (*). At least on my system debian/gcc 4.3 it looks like I am not writing out a floating point separator as a comma. what are the operation affected by the LC_NUMERIC env var value ? Thanks -Mathieu

C / C++

9423

Changing the language in Windows 10

by: Hystou | last post by:

Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it. First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...

Windows Server

10216

Problem With Comparison Operator <=> in G++

by: Oralloy | last post by:

Hello folks, I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>". The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed. This is as boiled down as I can make it. Here is my compilation command: g++-12 -std=c++20 -Wnarrowing bit_field.cpp Here is the code in...

C / C++

10049

Maximizing Business Potential: The Nexus of Website Design and Digital Marketing

by: jinu1996 | last post by:

In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth. The Art of Business Website Design Your website is...

Online Marketing

9865

Discussion: How does Zigbee compare with other wireless protocols in smart home applications?

by: tracyyun | last post by:

Dear forum friends, With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...

General

8873

AI Job Threat for Devs

by: agi2029 | last post by:

Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own.... Now, this would greatly impact the work of software developers. The idea...

Career Advice

6675

Couldn’t get equations in html when convert word .docx file to html file in C#.

by: conductexam | last post by:

I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one. At the time of converting from word file to html my equations which are in the word document file was convert into image. Globals.ThisAddIn.Application.ActiveDocument.Select();...

C# / C Sharp

5309

Trying to create a lan-to-lan vpn between two differents networks

by: TSSRALBI | last post by:

Hello I'm a network technician in training and I need your help. I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs. The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols. I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...

Networking - Hardware / Configuration

5448

Windows Forms - .Net 8.0

by: adsilva | last post by:

A Windows Forms form does not have the event Unload, like VB6. What one acts like?

Visual Basic .NET

2815

Comprehensive Guide to Website Development in Toronto: Expert Insights from BSMN Consultancy

by: bsmnconsultancy | last post by:

In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...

General