One possible way: 

c:\@Work\Perl>perl -wMstrict -MData::Dump -le
"my $s = q{name1=value1 name2=' value2=0' name3=value3};
 ;;
 my $name     = qr{ \w+ }xms;
 my $plain    = qr{ \w+ }xms;
 my $s_quoted = qr{ ' [^\x27]* ' }xms;
 ;;
 my %h = $s =~ m{ ($name) \s* = \s* ($s_quoted | $plain) \s* }xmsg;
 dd \%h;
"
{ name1 => "value1", name2 => "' value2=0'", name3 => "value3" }

[download]
Please see perlre, perlrequick, and perlretut.

Updates:

  1. Note that  \x27 in  [^\x27] represents a  ' (single-quote) character. I have to use this form because my REPL does not like unbalanced single-quotes in a command-line code expression. You can use  [^'] like a sane person.
  2. Another and probably better approach would be to forget regexes and use Text::CSV or Text::CSV_XS.
  3. If you need to get rid of the single-quotes and have Perl version 5.10+, try this. Note that  $s_quoted is changed and the  m// match uses  (?|pattern) from Extended Patterns. 
    c:\@Work\Perl>perl -wMstrict -MData::Dump -le
"use 5.010;
 ;;
 my $s = q{name1=value1 name2=' value2=0' name3=value3};
 ;;
 my $name     = qr{ \w+ }xms;
 my $plain    = qr{ \w+ }xms;
 my $s_quoted = qr{ [^\x27]* }xms;
 ;;
 my %h = $s =~ m{ ($name) \s* = \s* (?| ' ($s_quoted) ' | ($plain)) \s
+* }xmsg;
 dd \%h;
"
{ name1 => "value1", name2 => " value2=0", name3 => "value3" }

    [download]
    If you don't have 5.10, let me know. There's a simple alternative.

Give a man a fish:  <%-(-(-(-<

In reply to Re: parse string containing space by AnomalousMonk
in thread parse string containing space by mtovey

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