Pattern matching in C++

[Alec Taylor]

Good morning,

I'm trying to parse a relatively simple pattern across 4 std::strings, extracting whatever the part which matches the pattern into a separate std::string.

In an abstracted sense, here is what I want:
s1=<string1><consecutive number>, s2=<consecutive number><string2>,
s3=<string1><consecutive number>, s4=<consecutive number><string2>

Less abstracted:
s1="apple 1", s2="2 cheese", s3="apple 3", s4="4 cheese"

Actual contents:
s1="lxckvjlxcjvlkjlkje xvcjxzlvcj wqrej lxvcjz ljvl;x czvouzxvcuj;ljfds apple 1 xcvljxclvjx oueroi xcvzlkjv; zjx",
s2="xzljlkxvcjlkjxzvl jxcvljzx lvjlkj wre 2 cheese",
s3="apple 3",
s4="kxclvj xcvjlxk jcvljxlck jxcvl 4 cheese"

How would I perform this pattern matching, and what libraries should I use?

Thanks for all suggestions,

Alec Taylor

 

[Marc]

Good morning,

I'm trying to parse a relatively simple pattern across 4 std::strings, extracting whatever the part which matches the pattern into a separate std::string.

In an abstracted sense, here is what I want:
s1=<string1><consecutive number>, s2=<consecutive number><string2>,
s3=<string1><consecutive number>, s4=<consecutive number><string2>

Less abstracted:
s1="apple 1", s2="2 cheese", s3="apple 3", s4="4 cheese"

Actual contents:
s1="lxckvjlxcjvlkjlkje xvcjxzlvcj wqrej lxvcjz ljvl;x czvouzxvcuj;ljfds apple 1 xcvljxclvjx oueroi xcvzlkjv; zjx",
s2="xzljlkxvcjlkjxzvl jxcvljzx lvjlkj wre 2 cheese",
s3="apple 3",
s4="kxclvj xcvjlxk jcvljxlck jxcvl 4 cheese"

How would I perform this pattern matching, and what libraries should I use?

The standard library should have what you need in <regex>, or if you
have an older compiler/library: Boost.Regex.