Enhance CPE generation for java GroupId and filtering (#402)

* enhance cpe generation for group id and filtering

Signed-off-by: Alex Goodman <alex.goodman@anchore.com>

* rename group id const + add doc comment for HasAnyOfPrefixes

Signed-off-by: Alex Goodman <alex.goodman@anchore.com>

internal/string_helpers.go

@@ -0,0 +1,14 @@
+package internal
+
+import "strings"
+
+// HasAnyOfPrefixes returns an indication if the given string has any of the given prefixes.
+func HasAnyOfPrefixes(input string, prefixes ...string) bool {
+	for _, prefix := range prefixes {
+		if strings.HasPrefix(input, prefix) {
+			return true
+		}
+	}
+
+	return false
+}

internal/string_helpers_test.go

@@ -0,0 +1,65 @@
+package internal
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestHasAnyOfPrefixes(t *testing.T) {
+	tests := []struct {
+		name     string
+		input    string
+		prefixes []string
+		expected bool
+	}{
+		{
+			name:  "go case",
+			input: "this has something",
+			prefixes: []string{
+				"this has",
+				"that does not have",
+			},
+			expected: true,
+		},
+		{
+			name:  "no match",
+			input: "this has something",
+			prefixes: []string{
+				"this DOES NOT has",
+				"that does not have",
+			},
+			expected: false,
+		},
+		{
+			name:     "empty",
+			input:    "this has something",
+			prefixes: []string{},
+			expected: false,
+		},
+		{
+			name:  "positive match last",
+			input: "this has something",
+			prefixes: []string{
+				"that does not have",
+				"this has",
+			},
+			expected: true,
+		},
+		{
+			name:  "empty input",
+			input: "",
+			prefixes: []string{
+				"that does not have",
+				"this has",
+			},
+			expected: false,
+		},
+	}
+
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			assert.Equal(t, test.expected, HasAnyOfPrefixes(test.input, test.prefixes...))
+		})
+	}
+}