[boost] Re: Re: Regexp code bloat

From: Eric Niebler (neric_at_[hidden])
Date: 2002-10-24 19:25:37

"Andrei Alexandrescu" <andrewalex_at_[hidden]> wrote in message news:apa0p9
> Could anyone post the executable size generated by a run-of-the-mill
regexp
> search on a char* for Greta and Regex++? Thank you.

Without tweaking the code, I can make a GRETA executable as small as 86 Kb:

C:\src\andrei_regex\Release>andrei_regex.exe "^H.ll." "Hello, world!"
C:\src\andrei_regex\Release>echo %errorlevel%
0
C:\src\andrei_regex\Release>andrei_regex.exe "^no match$" "Hello, world!"
C:\src\andrei_regex\Release>echo %errorlevel%
-1
C:\src\andrei_regex\Release>dir andrei_regex.exe
 Volume in drive C has no label.
 Volume Serial Number is 8CB4-81C7

 Directory of C:\src\andrei_regex\Release

10/24/2002  05:12 PM            86,016 andrei_regex.exe
               1 File(s)         86,016 bytes
               0 Dir(s)  86,600,318,976 bytes free

C:\src\andrei_regex\Release>type ..\main.cpp
#include "regexpr2.h"
using namespace regex;

int main( int argc, char * argv[] )
{
    static rpattern_c const pat( argv[1] );
    match_results_c res;
    if( pat.match( argv[2], res ) )
    {
        return 0;
    }
    return -1;
}

The numbers I reported yesterday were off because I was statically linking
to the CRT, and compiling with "favor speed over size."  :-P

HTH,
Eric