lib/regexp-examples/constants.rb in regexp-examples-0.3.1 vs lib/regexp-examples/constants.rb in regexp-examples-0.3.2

@@ -1,33 +1,38 @@
 module RegexpExamples
-  # Number of times to repeat for Star and Plus repeaters
-  TIMES = 2
+  # The maximum variance for any given repeater, to prevent a huge/infinite number of
+  # examples from being listed. For example, if MaxRepeaterVariance = 2 then:
+  # .* is equivalent to .{0,2}
+  # .+ is equivalent to .{1,3}
+  # .{2,} is equivalent to .{2,4}
+  # .{,3} is equivalent to .{0,2}
+  # .{3,8} is equivalent to .{3,5}
+  MaxRepeaterVariance = 2
 
   # Maximum number of characters returned from a char set, to reduce output spam
   # For example:
   # If MaxGroupResults = 5, then
   # \d = [0, 1, 2, 3, 4]
   MaxGroupResults = 5
 
   module CharSets
-    Lower = Array('a'..'z')
-    Upper = Array('A'..'Z')
-    Digit = Array('0'..'9')
-    # 45.chr = "-". Need to make sure this is at the START of the array, or things break
-    # This is because of the /[a-z]/ regex syntax, and how it's being parsed
-    Punct = [45..45, 33..44, 46..47, 58..64, 91..96, 123..126].map { |r| r.map { |val| val.chr } }.flatten
-    Hex   = Array('a'..'f') | Array('A'..'F') | Digit
-    Any   = Lower | Upper | Digit | Punct
+    Lower      = Array('a'..'z')
+    Upper      = Array('A'..'Z')
+    Digit      = Array('0'..'9')
+    Punct      = [33..47, 58..64, 91..96, 123..126].map { |r| r.map { |val| val.chr } }.flatten
+    Hex        = Array('a'..'f') | Array('A'..'F') | Digit
+    Whitespace = [' ', "\t", "\n", "\r", "\v", "\f"]
+    Any        = Lower | Upper | Digit | Punct
   end
 
   # Map of special regex characters, to their associated character sets
   BackslashCharMap = {
     'd' => CharSets::Digit,
     'D' => CharSets::Lower | CharSets::Upper | CharSets::Punct,
     'w' => CharSets::Lower | CharSets::Upper | CharSets::Digit | ['_'],
     'W' => CharSets::Punct.reject { |val| val == '_' },
-    's' => [' ', "\t", "\n", "\r", "\v", "\f"],
-    'S' => CharSets::Any - [' ', "\t", "\n", "\r", "\v", "\f"],
+    's' => CharSets::Whitespace,
+    'S' => CharSets::Any - CharSets::Whitespace,
     'h' => CharSets::Hex,
     'H' => CharSets::Any - CharSets::Hex,
 
     't' => ["\t"], # tab
     'n' => ["\n"], # new line