convert std::string to std::wstring

[Hansi]

Hello,

I have searched a lot in every place what is the best way to convert a
string to a wstring (and may be vice versa). But til now I don`t got any
results. Can anyone give me an hint what is the best way to do that
(also good performance?)? maybe there is something available to do that?
may be also with some examples.

Thanks
Hansjörg

[Tan, Tom (Shanghai)]

Post by Hansi
I have searched a lot in every place what is the best way to convert a
string to a wstring (and may be vice versa). But til now I don`t got

any

Post by Hansi
results. Can anyone give me an hint what is the best way to do that
(also good performance?)? maybe there is something available to do

that?

Post by Hansi
may be also with some examples.

Use member function assign().
Ex.

// wstring ->string
wstring ws(L"this is a wstring");
string s;
s.assign(ws.begin(), ws.end());// now s = "this is a wstring";

// wstring ->string
string s("this is a wstring");
wstring ws;
ws.assign(s.begin(), s.end());// now ws = L"this is a wstring";

[Kamil Zubair]

since char is convertible to wchar_t and vice versa (with a possibility for lost precision of course) I usually just do this:

string s("something");
wstring ws(s.begin(), s.end());

You can do the reverse with wstring to string and as long your wstring doesn't contain non-ASCII characters it should be okay.

--- On Wed, 6/18/08, Hansi <***@web.de> wrote:
From: Hansi <***@web.de>
Subject: [Boost-users] convert std::string to std::wstring
To: boost-***@lists.boost.org
Date: Wednesday, June 18, 2008, 2:10 PM

Hello,

I have searched a lot in every place what is the best way to convert a
string to a wstring (and may be vice versa). But til now I don`t got any
results. Can anyone give me an hint what is the best way to do that
(also good performance?)? maybe there is something available to do that?
may be also with some examples.

Thanks
Hansjörg

[Robert Ramey]

The serialization library contains both converters in the form of "Dataflow
Iterators"
mb_from_wchar and wchar_from_mb. They are built using generic code of boost
iterators.

Robert Ramey

Post by Hansi
Hello,
I have searched a lot in every place what is the best way to convert a
string to a wstring (and may be vice versa). But til now I don`t got
any results. Can anyone give me an hint what is the best way to do
that (also good performance?)? maybe there is something available to
do that? may be also with some examples.
Thanks
Hansjörg

[Max]

Please elaborate. I also have interest.

Thanks
Max

Post by Robert Ramey
The serialization library contains both converters in the form of "Dataflow
Iterators"
mb_from_wchar and wchar_from_mb. They are built using generic code of boost
iterators.
Robert Ramey

Post by Hansi
Hello,
I have searched a lot in every place what is the best way to convert a
string to a wstring (and may be vice versa). But til now I don`t got
any results. Can anyone give me an hint what is the best way to do
that (also good performance?)? maybe there is something available to
do that? may be also with some examples.
Thanks
Hansjörg

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[Robert Ramey]

look for wchar_from_mb.hpp and mb_from_wchar.hpp in boost/archive/iterators

for examples look in libs/serialization/test/test_iterators.hpp

Robert Ramey

Post by Max
Please elaborate. I also have interest.
Thanks
Max

Post by Robert Ramey
The serialization library contains both converters in the form of
"Dataflow Iterators"
mb_from_wchar and wchar_from_mb. They are built using generic code
of boost iterators.
Robert Ramey

Post by Hansi
Hello,
I have searched a lot in every place what is the best way to
convert a string to a wstring (and may be vice versa). But til now
I don`t got any results. Can anyone give me an hint what is the
best way to do that (also good performance?)? maybe there is
something available to do that? may be also with some examples.
Thanks
Hansjörg

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_______________________________________________
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