Add license to repository search (#2258)

Octokit.Tests/Models/SearchRepositoryRequestTests.cs

@@ -33,5 +33,13 @@ public class SearchRepositoryRequestTests
             var result = request.MergedQualifiers();
             Assert.Contains(result, x => string.Equals(x, "language:\"cpp\""));
         }
+
+        [Fact]
+        public void LicenseUsesParameterTranslation()
+        {
+            var request = new SearchRepositoriesRequest() { License = RepoSearchLicense.Apache_2_0 };
+            var result = request.MergedQualifiers();
+            Assert.Contains(result, x => string.Equals(x, "license:apache-2.0"));
+        }
     }
 }

Octokit/Models/Request/SearchRepositoriesRequest.cs

@@ -112,6 +112,12 @@ namespace Octokit
         /// </summary>
         public DateRange Updated { get; set; }
 
+        /// <summary>
+        /// Filters repositories based on license
+        /// https://help.github.com/articles/searching-repositories#search-by-license
+        /// </summary>
+        public RepoSearchLicense? License { get; set; }
+
         /// <summary>
         /// Filters whether archived repositories should be included (true) or not (false).
         /// </summary>
@@ -171,6 +177,11 @@ namespace Octokit
                 parameters.Add(string.Format(CultureInfo.InvariantCulture, "archived:{0}", Archived.ToString().ToLower()));
             }
 
+            if (License != null)
+            {
+                parameters.Add(string.Format(CultureInfo.InvariantCulture, "license:{0}", License.ToParameter()));
+            }
+
             return parameters;
         }
 
@@ -501,7 +512,7 @@ namespace Octokit
     }
 
     /// <summary>
-    /// lanuages that can be searched on in github
+    /// Languages that can be searched on in GitHub
     /// https://help.github.com/articles/searching-repositories#languages
     /// </summary>
     public enum Language
@@ -863,6 +874,98 @@ namespace Octokit
 #pragma warning restore 1591
     }
 
+    /// <summary>
+    /// Licenses than can be searched on GitHub
+    /// https://help.github.com/articles/searching-repositories#search-by-license
+    /// </summary>
+    public enum RepoSearchLicense
+    {
+        [Parameter(Value = "afl-3.0")]
+        AcademicFree_3_0,
+        [Parameter(Value = "apache-2.0")]
+        Apache_2_0,
+        [Parameter(Value = "artistic-2.0")]
+        Artistic_2_0,
+        [Parameter(Value = "bsl-1.0")]
+        BoostSoftware_1_0,
+        [Parameter(Value = "0bsd")]
+        BSD0Clause,
+        [Parameter(Value = "bsd-2-clause")]
+        BSD2Clause,
+        [Parameter(Value = "bsd-3-clause")]
+        BSD3Clause,
+        [Parameter(Value = "bsd-3-clause-clear")]
+        BSD3ClauseClear,
+        [Parameter(Value = "bsd-4-clause")]
+        BSD4Clause,
+        [Parameter(Value = "cc")]
+        CreativeCommons,
+        [Parameter(Value = "cc0-1.0")]
+        CreativeCommonsZero_1_0,
+        [Parameter(Value = "cc-by-4.0")]
+        CreativeCommonsAtrribution_4_0,
+        [Parameter(Value = "cc-by-sa-4.0")]
+        CreativeCommonsAttributionShareAlike_4_0,
+        [Parameter(Value = "cecill-2.1")]
+        CeCILL_2_1,
+        [Parameter(Value = "wtfpl")]
+        DoWhatTheFYouWant,
+        [Parameter(Value = "ecl-2.0")]
+        EducationalCommunity_2_0,
+        [Parameter(Value = "epl-1.0")]
+        EclipsePublic_1_0,
+        [Parameter(Value = "epl-2.0")]
+        EclipsePublic_2_0,
+        [Parameter(Value = "eupl-1.1")]
+        EuropeanUnionPublic_1_1,
+        [Parameter(Value = "eupl-1.2")]
+        EuropeanUnionPublic_1_2,
+        [Parameter(Value = "agpl-3.0")]
+        GNUAfferoGeneralPublic_3_0,
+        [Parameter(Value = "gpl")]
+        GNUGeneralPublic,
+        [Parameter(Value = "gpl-2.0")]
+        GNUGeneralPublic_2_0,
+        [Parameter(Value = "gpl-3.0")]
+        GNUGeneralPublic_3_0,
+        [Parameter(Value = "lgpl")]
+        GNULesserGeneralPublic,
+        [Parameter(Value = "lgpl-2.1")]
+        GNULesserGeneralPublic_2_1,
+        [Parameter(Value = "lgpl-3.0")]
+        GNULesserGeneralPublic_3_0,
+        [Parameter(Value = "isc")]
+        ISC,
+        [Parameter(Value = "lppl-1.3c")]
+        LatexProjectPublic,
+        [Parameter(Value = "ms-pl")]
+        MicrosoftPublic,
+        [Parameter(Value = "ms-rl")]
+        MicrosoftReciprocal,
+        [Parameter(Value = "mit")]
+        MIT,
+        [Parameter(Value = "mpl-2.0")]
+        MozillaPublic_2_0,
+        [Parameter(Value = "odbl-1.0")]
+        ODCOpenDatabase,
+        [Parameter(Value = "osl-3.0")]
+        OpenSoftware_3_0,
+        [Parameter(Value = "postgresql")]
+        PostgreseSQL,
+        [Parameter(Value = "ofl-1.1")]
+        SILOpenFont,
+        [Parameter(Value = "upl-1.0")]
+        UniversalPermissive,
+        [Parameter(Value = "ncsa")]
+        NSCAOpenSource,
+        [Parameter(Value = "unlicense")]
+        TheUnlicense,
+        [Parameter(Value = "vim")]
+        Vim,
+        [Parameter(Value = "zlib")]
+        ZLib
+    }
+
     /// <summary>
     /// sorting repositories by any of below
     /// https://help.github.com/articles/searching-repositories#sorting