Re: Help With TR1 regex_match()
On Oct 6, 5:38 am, "Martin T." <0xCDCDC...@gmx.at> wrote:
Le Chaud Lapin wrote:
Hi All,
Should...
regex_match("12345 ", "(.*|\s)*A.B.C.")7
Shouldn't that be "(.*|\\s)*A.B.C." ??
Yes...I copied the text above directly from the Visual Studio 2008
debugger window, hence absence of requisite escaping blackslash.
...yield true or false (or throw an exception)?
It is returning true for me.
I don't see how that can match. Testing it with non-C++ is returning
false for me.
Yes, it should return false, or throw an exception, IIUC, but it is
returning true.
My compiler is Visual Studio 2008 with al TR1 updates. Here is a small
sample program to test:
#include <regex>
#include <iostream>
int main ()
{
using namespace std;
using namespace tr1;
char *pattern = "(.*|\\s)*A.B.C.";
basic_string<char> text("12345 ");
basic_regex<char> rx(pattern, regex_constants::ECMAScript |
regex_constants::icase);
if (regex_match (text.c_str(), rx))
cout << pattern << " matches " << text << endl;
else
cout << pattern << " does not match " << text.c_str() << endl;
return 0;
}
Please note that I know that the "(.*|\\s)*A.B.C." is somewhat bogus.
While attempting to employ RE's to a project, I accidentally typed
this in, and it returned true.
I am now trying to determine if there is an error in my perception or
a bug in TR1's regex framework. If it's the former, I would like to
understand what it is I do not understand. If it is the latter, I have
to determine if the framework is reliable enough to process about
55.6GB of data with RE's that are dynamically-generated from the data
itself.
-Le Chaud Lapin-
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