05-22-2008
Regular expression help in perl
Hi all,
I am trying to match a multi line string and return the matching string in one line. Here is the perl code that I wrote:
#!/usr/bin/perl
my $str='<title>My
title</title>';
if ($str =~ /(<title>)([^<]+)(<\/title>)/ ){
print "$2\n";
}
It returns :
My
title
I want the regex to return it in a single line as : My title
What should be the regex for this? Is it possible to do it using regex only? I want this capabilty through regex only.
Thanks
Sandeep
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LEARN ABOUT FREEBSD
re_exec
RE_COMP(3) BSD Library Functions Manual RE_COMP(3)
NAME
re_comp, re_exec -- regular expression handler
LIBRARY
Compatibility Library (libcompat, -lcompat)
SYNOPSIS
#include <unistd.h>
char *
re_comp(const char *s);
int
re_exec(const char *s);
DESCRIPTION
This interface is made obsolete by regex(3).
The re_comp() function compiles a string into an internal form suitable for pattern matching. The re_exec() function checks the argument
string against the last string passed to re_comp().
The re_comp() function returns 0 if the string s was compiled successfully; otherwise a string containing an error message is returned. If
re_comp() is passed 0 or a null string, it returns without changing the currently compiled regular expression.
The re_exec() function returns 1 if the string s matches the last compiled regular expression, 0 if the string s failed to match the last
compiled regular expression, and -1 if the compiled regular expression was invalid (indicating an internal error).
The strings passed to both re_comp() and re_exec() may have trailing or embedded newline characters; they are terminated by NULs. The regu-
lar expressions recognized are described in the manual entry for ed(1), given the above difference.
DIAGNOSTICS
The re_exec() function returns -1 for an internal error.
The re_comp() function returns ``no previous regular expression'' or one of the strings generated by regerror(3).
SEE ALSO
ed(1), egrep(1), ex(1), fgrep(1), grep(1), regex(3)
HISTORY
The re_comp() and re_exec() functions appeared in 4.0BSD.
BSD
June 4, 1993 BSD