jsoncpp-devel Mailing List for json-cpp (Page 2)

Hi all,

I'm working on updating Google's internal version of jsoncpp from an ancient
commit to the most recent version (SVN rev 192), but having some trouble. I
think I've run into a backwards incompatible change that makes it nearly
impossible for us to upgrade.

In particular, there's jsoncpp-using code that looks something like this:

    Json::Value value = ...
    unsigned int value =
        value.isUInt() ? value.asUInt() :
            (value.isDouble() ? value.asDouble() : kError);

That is, the code uses the isFoo methods to decide which asFoo method to call.
The problem is that at SVN rev 192, values parsed as integers greater than
2^32 will return true for isUInt(), but have an assertion failure for
asUInt():

    value_.uint_ <= maxUInt
    "unsigned integer out of UInt range"

You can see this by parsing the string "31121983701778432", for example.

As far as I can tell, there's no way for me to update to the latest version of
jsoncpp without either changing the code above or breaking it (introducing
incorrectness or a crasher bug into production). Updating the code is not an
option for me since there is too much of it.

Do you have any advice? In particular, am I missing something in the
Json::Value API?

Thanks,
Aaron

On Fri, May 20, 2011 at 4:01 PM, Baptiste Lepilleur <
bap...@gm...> wrote:

> The easiest for you would be to ensure that all your strings are encoded
> using UTF-8. This is the standard way of storing unicode string as
> std::string / const char *.


i can highly recommend this library for doing the conversions:

http://utfcpp.sourceforge.net/

-- 
----- stephan beal
http://wanderinghorse.net/home/stephan/

The easiest for you would be to ensure that all your strings are encoded
using UTF-8. This is the standard way of storing unicode string as
std::string / const char *.

Baptiste.

2011/5/18 Сухенький Серафим <ad...@tr...>

> Hi!
>
> I'm using json-cpp as an embedded database driver in my project.
> Now I need to emplement unicode support.
>
> Could you please tell, how can I store unicode strings in Value and get
> them back?
>
> Thanks!
>
>

Hi!

I'm using json-cpp as an embedded database driver in my project.
Now I need to emplement unicode support.

Could you please tell, how can I store unicode strings in Value and get 
them back?

Thanks!

Hi,
I am trying to use the library on a Mac. Since it is not available via
MacPorts I am trying to build it from source.

I've downloaded the tarball ( 0.5.0 ) , and issued :
scons platform=linux-gcc

which compiles fine.

But there is no installation script via scons, or I am not aware of one.
I have tried manually copying the libraries from
libs/linux-gcc-<ver>/*.{a,dylib} into /opt/local/lib but when I run
otool on the library I get the following :


otool -L /opt/local/lib/libjson_linux-gcc-4.0.1_libmt.dylib
/opt/local/lib/libjson_linux-gcc-4.0.1_libmt.dylib:
	buildscons/linux-gcc-4.0.1/src/lib_json/libjson_linux-gcc-4.0.1_libmt.dylib
(compatibility version 0.0.0, current version 0.0.0)
	/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current
version 111.1.6)
	/usr/lib/libstdc++.6.dylib (compatibility version 7.0.0, current version 7.4.0)
	/usr/lib/libgcc_s.1.dylib (compatibility version 1.0.0, current version 1.0.0)

Also, I tried linking my test program against it and of course it
failed at runtime since it cannot find the library.

Is there a documented way of installing the library on a Mac ?

FWIW, I have tried the same with the libraries located under
buildscons/linux-gcc ... with the same results.

Help ?

Thanks,
Radu