[boost] Repeated regular sub-matches extraction

From: Martin Bosticky (MBosticky_at_[hidden])
Date: 2002-06-03 18:58:29

Hello everyone.

I am relatively new to the regex library. I am trying to get all strings
matched a a submatch 1, but where submatch 1 can match more than once
because of *. ie

Simplified version: "(?:\s*(\S+)\s+/)*\s+(\S+)"

The problem is that i can't figure out how to force regex using regex_grep
or what ever to give me each match in each sub-expression that occurs. ie.
"xxx / yyy / zzz" will result in match yyy from sub-expression 1 and match
zzz from sub-expression 2. But what about xxx?

The expression i am using is to read filepaths from a config file:

                "^TAGFILES\\s+="
                "(?:"
                    "\\s*(\\S+)\\s*\\\\$"
                ")*"
                "(?:"
                    "\\s*(\\S+)[ \t]*$"
                ")"

and example file content would be:

#---------------------------------------------------------------------------
# Configuration::addtions related to external references   
#---------------------------------------------------------------------------
TAGFILES               = D:/OPCrew/Src/TagFiles/Dil.tag \
                         D:/OPCrew/Src/TagFiles/RunTests.tag \
                         D:/OPCrew/Src/TagFiles/ScheduleSetServer.tag
GENERATE_TAGFILE       = 
ALLEXTERNALS           = YES

what to do? can this be done in one hit? should i take a different approach?