Regular expressions and I/O

[Krivenok Dmitry]

Hello All!
I have problem, but I don't know how to implement it.

Problem description:
I have file with records (usually record = string).
I want encapsulate all work with file in secial class "Source".

I suggest This class should contain ifstream object and GetRecord
method.

But I have several source files with different formats (very
different!)
And of course I want use my class in all cases!
Therein lies a problem!!!

I see following solution:
Constructor of Source class have 2 params:
1) Name of source file
2) Regular expression (std::string)

GetRecord method should get records from ifstream in accordance with
regular expression!

But how to implement this idea in C++???

[mlimber]

Krivenok Dmitry wrote:

Hello All!
I have problem, but I don't know how to implement it.

Problem description:
I have file with records (usually record = string).
I want encapsulate all work with file in secial class "Source".

I suggest This class should contain ifstream object and GetRecord
method.

But I have several source files with different formats (very
different!)
And of course I want use my class in all cases!
Therein lies a problem!!!

I see following solution:
Constructor of Source class have 2 params:
1) Name of source file
2) Regular expression (std::string)

GetRecord method should get records from ifstream in accordance with
regular expression!

But how to implement this idea in C++???

You could use the Boost/TR1 RegEx library documented here:

http://boost.org/libs/regex/doc/index.html

Cheers! --M

[mlimber]

Krivenok Dmitry wrote:

Hello All!
I have problem, but I don't know how to implement it.

Problem description:
I have file with records (usually record = string).
I want encapsulate all work with file in secial class "Source".

I suggest This class should contain ifstream object and GetRecord
method.

But I have several source files with different formats (very
different!)
And of course I want use my class in all cases!
Therein lies a problem!!!

I see following solution:
Constructor of Source class have 2 params:
1) Name of source file
2) Regular expression (std::string)

GetRecord method should get records from ifstream in accordance with
regular expression!

But how to implement this idea in C++???

You might also find the Boost Iostreams library useful, perhaps in
combination with their RegEx library:

http://boost.org/libs/iostreams/doc/index.html

Cheers! --M