From: tweety (mitea_at_[hidden])
Date: 2004-08-01 22:03:54
Why don't you use something like
^
Point\(\d+\)\s*=\s*\{\s*\d+\s*,\s*\d+\s*,\s*\d+\s*,\s*\d+(?:\.\d+)?\s*}\s*;
|
Line\(\d+\)\s*=\s*\{\s*\d+\s*,\s*\d+\s*}\s*;
[...add whatever you need here...]
$
And run that for each line. Then you can use the matched method of the match
class to see if a group matched (oh, and set the groups you're interested
for).
----------------------------------
Peace and love,
Tweety
mitea_at_[hidden] - tweety_04_01_at_[hidden]
YahooID: tweety_04_01
> -----Original Message-----
> From: boost-users-bounces_at_[hidden]
> [mailto:boost-users-bounces_at_[hidden]] On Behalf Of hackervalley
> Sent: August 1, 2004 7:36 PM
> To: boost-users_at_[hidden]
> Subject: [Boost-users] [Help on implementation of boost regex]
>
> Hello,
>
> I try to use boost regex . I don't have a lot of experience of using
> boost regex . Boost regex examples aren't so explicit for me.
> So I need
> some help to parse this example file.
>
> Point(1) = {0,0,0,0.1};
> Point(2) = {1,0,0,0.1};
> Point(3) = {0,1,0,0.1};
> Point(4) = {1,1,0,0.1};
> Line(1) = {1,2};
> Line(2) = {2,4};
> Line(3) = {4,3};
> Line(4) = {3,1};
> Line Loop(5) = {2,3,4,1};
> Plane Surface(6) = {5};
>
> I can't read each informations to use it after.
> I can't match for use IdentificationNumber of
> Point(IdentificationNumber).
> Actually my code look so :
>
> /*
> g++ -Wall -O2 -o ifstream ifstream.cc
> */
>
> #include <iostream>
> #include <fstream>
> #include <string>
>
> /* boost regex header */
> #include <boost/regex.hpp>
>
> using namespace std;
> using namespace boost;
>
> int
> main (int argc, char argv[])
> {
> char buffer[256];
> string filename;
> string inputstring;
>
> cout << "Input filename ";
> cin >> filename;
> ifstream readfile (filename.c_str (), ios::in);
>
> if (!readfile.is_open ())
> {
> cout << "Error opening file" << endl;
> return 0;
> }
>
> regex exPoint ("Point");
> regex exLine ("Line");
> regex IdentificationNumber ("[:digit:]");
>
> while (!readfile.eof ())
> {
> readfile.getline (buffer, 200);
> inputstring = buffer;
>
> if (regex_search (inputstring, exPoint))
> {
> cout << "Point" << endl;
> smatch result;
> if (regex_search
> (inputstring, result, IdentificationNumber))
> {
> cout << "Identification Number
> " << result << endl;
> }
> else
> cout << "Error regex_match" << endl;
> }
> if (regex_search (inputstring, exLine))
> {
> cout << "Line" << endl;
> }
> cout << buffer << endl;
> }
>
> readfile.close ();
>
> return (0);
> }
>
>
> Thank you for help. Best regards
>
> hackervalley
> http://hackervalley.free.fr
>
>
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