Fix removing archive ext from name (#1209)

internal/plugin/index_builder.go

@@ -210,9 +210,7 @@ func (i *IndexBuilder) appendIndexEntry(entries map[string][]pluginBinariesIndex
 	}
 
 	pType, pName, os, arch := parts[0], parts[1], parts[2], parts[3]
-	for ext := range getter.Decompressors {
-		arch = strings.TrimSuffix(arch, "."+ext) // normalize in case archive was used
-	}
+	arch = trimArchiveExtension(arch) // normalize in case archive was used
 
 	if !pNameRegex.MatchString(pName) {
 		i.log.WithField("file", entryName).Debug("Ignoring file as it doesn't match filter")
@@ -288,10 +286,34 @@ func (i *IndexBuilder) getJSONSchemaLoaderForEntry(entry IndexEntry) gojsonschem
 }
 
 func hasArchiveExtension(path string) bool {
-	for ext := range getter.Decompressors {
+	for _, ext := range getAvailableDecompressors() {
 		if strings.HasSuffix(path, "."+ext) {
 			return true
 		}
 	}
 	return false
 }
+
+func trimArchiveExtension(in string) string {
+	for _, ext := range getAvailableDecompressors() {
+		in = strings.TrimSuffix(in, "."+ext)
+	}
+	return in
+}
+
+func getAvailableDecompressors() []string {
+	var (
+		multiExt  []string
+		singleExt []string
+	)
+
+	for ext := range getter.Decompressors {
+		if strings.Contains(ext, ".") {
+			multiExt = append(multiExt, ext)
+			continue
+		}
+		singleExt = append(singleExt, ext)
+	}
+
+	return append(multiExt, singleExt...)
+}

internal/plugin/index_builder_test.go

@@ -106,3 +106,36 @@ func TestIndexBuilder_ValidateJSONSchemas(t *testing.T) {
 	// then
 	assert.EqualError(t, err, expectedErrMsg)
 }
+
+func TestRemoveArchiveExtension(t *testing.T) {
+	tests := []struct {
+		name      string
+		givenName string
+		expName   string
+	}{
+		{
+			name:      "Trim single extension archive",
+			givenName: "test.gz",
+			expName:   "test",
+		},
+		{
+			name:      "Trim multi extension archive",
+			givenName: "test.tar.gz",
+			expName:   "test",
+		},
+		{
+			name:      "Does nothing if not archive",
+			givenName: "test.exe",
+			expName:   "test.exe",
+		},
+	}
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			// when
+			gotName := trimArchiveExtension(tc.givenName)
+
+			// then
+			assert.Equal(t, tc.expName, gotName)
+		})
+	}
+}