Trying to create a RegEx for the following patterns - regex

Question

Here are the patterns:
Red,Green (and so on...)
Red (+5.00),Green (+6.00) (and so on...)
Red (+5.00,+10.00),Green (+6.00,+20.00) (and so on...)
Red (+5.00),Green (and so on...)
Each attribute ("Red,"Green") can have 0, 1, or 2 modifiers (shown as "+5.00,+10.00", etc.).
I need to capture each of the attributes and their modifiers as a single string (i.e. "Red (+5.00,+10.00)", "Green (+6.00,+20.00)".
Help?

Answer 1

Another example (PCRE):
((?:Red|Green)(?:\s\((?:\+\d+\.\d+,?)+\))?)
Explanation:
(...) // a capture group
(?:...) // a non-capturing group
Read|Green // matches Red or Green
(?:...)? // an optional non-capturing group
\s // matches any whitespace character
\( // matches a literal (
(?:...)+ // a non-capturing group that can occur one or more times
\+ // matches a literal +
\d+ // matches one or more digits
\. // matches a literal .
\d+ // matches one or more digits
,? // matches an optional comma
\) //matches a literal )
Update:
Or actually if you just want to extract the data, then
((?:Red|Green)(?:\s\([^)]+\))?)
would be sufficient.
Update 2: As pointed out in your comment, this would match anything in the first part but , and (:
([^,(]+(?:\s\([^)]+\))?)
(does not work, too permissive)
to be more restrictive (allowing only characters and numbers, you can just use \w:
(\w+(?:\s\([^)]+\))?)
Update 3:
I see, the first of my alternatives does not work correctly, but \w works:
$pattern = "#\w+(?:\s\([^)]+\))?#";
$str = "foo (+15.00,-10.00),bar (-10.00,+25),baz,bing,bam (150.00,-5000.00)";
$matches = array();
preg_match_all($pattern, $str, $matches);
print_r($matches);
prints
Array
(
[0] => Array
(
[0] => foo (+15.00,-10.00)
[1] => bar (-10.00,+25)
[2] => baz
[3] => bing
[4] => bam (150.00,-5000.00)
)
)
Update 4:
Ok, I got something working, please check whether it always works:
(?=[^-+,.]+)[^(),]+(?:\s?\((?:[-+\d.]+,?)+\))?
With:
$pattern = "#(?=[^-+,.]+)[^(),]+(?:\s?\((?:[-+\d.]+,?)+\))?#";
$str = "5 lb. (+15.00,-10.00),bar (-10.00,+25),baz,bing,bam (150.00,-5000.00)";
preg_match_all gives me
Array
(
[0] => Array
(
[0] => 5 lb. (+15.00,-10.00)
[1] => bar (-10.00,+25)
[2] => baz
[3] => bing
[4] => bam (150.00,-5000.00)
)
)
Maybe there is a simpler regex, I'm not an expert...

Answer 2

PCRE format:
(Red|Green)(\s\((?P<val1>.+?)(,){0,1}(?P<val2>.+?){0,1}\)){0,1}
Match from PHP:
preg_match_all("/(Red|Green)(\s\((?P<val1>.+?)(,){0,1}(?P<val2>.+?){0,1}\)){0,1}/ims", $text, $matches);

Answer 3

Here's my bid:
/
(?:^|,) # Match line beginning or a comma
(?: # parent wrapper to catch multiple "color (+#.##)" patterns
( # grouping pattern for picking off matches
(?:(?:Red|Green),?)+ # match the color prefix
\s\( # space then parenthesis
(?: # wrapper for repeated number groups
(?:\x2B\d+\.\d+) # pattern for the +#.##
,?)+ # end wrapper
\) # closing parenthesis
)+ # end matching pattern
)+ # end parent wrapper
/
Which translates to:
/(?:^|,)(?:((?:(?:Red|Green),?)+\s\((?:(?:\x2B\d+\.\d+),?)+\))+)+/
EDIT
Sorry, it was only catching the last pattern before. This will catch all matches (or should).