Added Text::Patterns::OCTAL_BYTE (issue #553).

ronin-rb · Dec 11, 2024 · a7cde48 · a7cde48
1 parent f3d6dd7
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diff --git a/lib/ronin/support/text/patterns/numeric.rb b/lib/ronin/support/text/patterns/numeric.rb
@@ -32,6 +32,11 @@ module Patterns
         # @since 1.0.0
         NUMBER = /[0-9]+/
 
+        # Regular expression for finding a octal bytes (0 - 377)
+        #
+        # @since 1.2.0
+        OCTAL_BYTE = /(?<=[^\d]|^)(?:3[0-7]{2}|[0-2][0-7]{2}|[0-7]{1,2})(?=[^\d]|$)/
+
         # Regular expression for finding a decimal bytes (0 - 255)
         #
         # @since 1.2.0

diff --git a/spec/text/patterns/numeric_spec.rb b/spec/text/patterns/numeric_spec.rb
@@ -13,6 +13,20 @@
     end
   end
 
+  describe "OCTAL_BYTE" do
+    subject { described_class::OCTAL_BYTE }
+
+    it "must match 0 - 377" do
+      numbers = (0..255).map { |byte| byte.to_s(8) }
+
+      expect(numbers).to all(match(subject))
+    end
+
+    it "must not match numbers greater than 377" do
+      expect('378').to_not match(subject)
+    end
+  end
+
   describe "DECIMAL_BYTE" do
     subject { described_class::DECIMAL_BYTE }