Working on long String in C++

[manishsharma1]

Hi,

I have one long String like this:

015EnvironmentData1........

I want to read first three character from it and convert them to
integer. This will be the length of the Name of the field and then
there is value. So if we take above example


015 means 15 - So we are going to read next 15 Character Starting with
E of "EnvironmentData" till "a".
Transfer it to come Variable say Field

Then I have to read the Value of this field which is followed by this
15 character long Field in the STring that is 1 in the above case.

I need help in Stripping of the String so that I can get all the
Fields and their values.

This has to be in C++. I am new at it. Please help.

Thanks in advance

 

[Victor Bazarov]

I have one long String like this:

015EnvironmentData1........

I want to read first three character from it and convert them to
integer. This will be the length of the Name of the field and then
there is value. So if we take above example


015 means 15 - So we are going to read next 15 Character Starting with
E of "EnvironmentData" till "a".
Transfer it to come Variable say Field

Then I have to read the Value of this field which is followed by this
15 character long Field in the STring that is 1 in the above case.

I need help in Stripping of the String so that I can get all the
Fields and their values.

This has to be in C++. I am new at it. Please help.

Something like

std::string const blah("015EnvironmentData1........");
int n = -1;
std:stringstream os(blah.substr(0, 3));
os >> n;
std::string Field = blah.substr(3, n);
os.str() = blah.substr(3 + n, 1);
int Value = -1;
os >> Value;

This is untested and only intended to give an idea.

V

 

[manishsharma1]

Hi Victor,

Thanks for reply.

This String is coming to the Parsing function in the form of pointer
to the string. Could you please advice something like the above
solution that will work with Pointer to String.

Thanks

 

[Victor Bazarov]

This String is coming to the Parsing function in the form of pointer
to the string. Could you please advice something like the above
solution that will work with Pointer to String.

std::string const blah(Pointer_To_String);

Everyting else is pretty much the same.

V

 

[manishsharma1]

    std::string const blah(Pointer_To_String);

Everyting else is pretty much the same.

V

Hi Victor,

My code is Unicode and I have to use CstString. Please suggest some
solution related to that.

Thanks

 

[peter koch]

Hi Victor,

My code is Unicode and I have to use CstString. Please suggest some
solution related to that.

Ask somewhere where CstString is topical. This is not the place.

/Peter

 

[manishsharma1]

I meant CStdString

 

[Richard Herring]

In message
<[email protected]>,
(e-mail address removed) writes

[please quote some context in your posts]

I meant CStdString

Same answer.

 

[manishsharma1]

Can you suggest where to post it then. I am new to development world.

Thanks in Advance

 

[peter koch]

Can you suggest where to post it then. I am new to development world.

Thanks in Advance

Hello

I am afraid I don't know. I suppose you know the name of the library/
development environment you use? In that case it should be a matter of
minutes before googling e.g. google newsgroups should provide you with
the name of an appropriate newsgroup.

/Peter

 

[manishsharma1]

Hello

I am afraid I don't know. I suppose you know the name of the library/
development environment you use? In that case it should be a matter of
minutes before googling e.g. google newsgroups should provide you with
the name of an appropriate newsgroup.

/Peter

Thanks.

 

[Hans Mull]

Thanks.

Are you German?
If yes, try
http://www.c-plusplus.de/forum/

Kind regards

 

[Richard Herring]

Are you German?
If yes, try
http://www.c-plusplus.de/forum/

Does the German C++ standard define a type called CStdString, or are
they just more tolerant of off-topicality there?