Ensure hover results are returned for files with CRLFs

CHANGELOG.md

@@ -26,6 +26,8 @@ All notable changes to the Docker Language Server will be documented in this fil
 - Compose
   - textDocument/completion
     - fix panic in code completion in an empty file ([#196](https://github.com/docker/docker-language-server/issues/196))
+  - textDocument/hover
+    - ensure results are returned even if the file has CRLFs ([#205](https://github.com/docker/docker-language-server/issues/205))
 - Bake
   - textDocument/publishDiagnostics
     - stop flagging `BUILDKIT_SYNTAX` as an unrecognized `ARG` ([#187](https://github.com/docker/docker-language-server/issues/187))

internal/compose/hover_test.go

@@ -451,6 +451,45 @@ services:
 				},
 			},
 		},
+		{
+			name: "container_name attribute on services",
+			content: `
+services:
+  test:
+    container_name: abc`,
+			line:      3,
+			character: 7,
+			result: &protocol.Hover{
+				Contents: protocol.MarkupContent{
+					Kind:  protocol.MarkupKindMarkdown,
+					Value: "Specify a custom container name, rather than a generated default name.\n\nSchema: [compose-spec.json](https://raw.githubusercontent.com/compose-spec/compose-spec/master/schema/compose-spec.json)\n\n[Online documentation](https://docs.docker.com/reference/compose-file/services/#container_name)",
+				},
+			},
+		},
+		{
+			name:      "container_name attribute with a comment before it",
+			content:   "services:\n  test:\n#\n    container_name: abc",
+			line:      3,
+			character: 7,
+			result: &protocol.Hover{
+				Contents: protocol.MarkupContent{
+					Kind:  protocol.MarkupKindMarkdown,
+					Value: "Specify a custom container name, rather than a generated default name.\n\nSchema: [compose-spec.json](https://raw.githubusercontent.com/compose-spec/compose-spec/master/schema/compose-spec.json)\n\n[Online documentation](https://docs.docker.com/reference/compose-file/services/#container_name)",
+				},
+			},
+		},
+		{
+			name:      "container_name attribute with a comment before it (CRLF)",
+			content:   "services:\r\n  test:\r\n#\r\n    container_name: abc",
+			line:      3,
+			character: 7,
+			result: &protocol.Hover{
+				Contents: protocol.MarkupContent{
+					Kind:  protocol.MarkupKindMarkdown,
+					Value: "Specify a custom container name, rather than a generated default name.\n\nSchema: [compose-spec.json](https://raw.githubusercontent.com/compose-spec/compose-spec/master/schema/compose-spec.json)\n\n[Online documentation](https://docs.docker.com/reference/compose-file/services/#container_name)",
+				},
+			},
+		},
 	}
 
 	temporaryBakeFile := fmt.Sprintf("file:///%v", strings.TrimPrefix(filepath.ToSlash(filepath.Join(os.TempDir(), "compose.yaml")), "/"))

internal/pkg/document/dockerComposeDocument.go

@@ -37,7 +37,10 @@ func NewComposeDocument(mgr *Manager, u uri.URI, version int32, input []byte) Co
 			uri:        u,
 			identifier: protocol.DockerComposeLanguage,
 			version:    version,
-			input:      input,
+			// change all CRLF to LFs
+			// https://github.com/goccy/go-yaml/issues/560
+			// https://github.com/docker/docker-language-server/issues/205
+			input: []byte(strings.Replace(string(input), "\r\n", "\n", -1)),
 		},
 		mgr: mgr,
 	}