[api-major] Replace MissingPDFException and UnexpectedResponseException with one exception

examples/mobile-viewer/viewer.mjs

@@ -91,10 +91,10 @@ const PDFViewerApplication = {
         let key = "pdfjs-loading-error";
         if (reason instanceof pdfjsLib.InvalidPDFException) {
           key = "pdfjs-invalid-file-error";
-        } else if (reason instanceof pdfjsLib.MissingPDFException) {
-          key = "pdfjs-missing-file-error";
-        } else if (reason instanceof pdfjsLib.UnexpectedResponseException) {
-          key = "pdfjs-unexpected-response-error";
+        } else if (reason instanceof pdfjsLib.ResponseException) {
+          key = reason.missing
+            ? "pdfjs-missing-file-error"
+            : "pdfjs-unexpected-response-error";
         }
         self.l10n.get(key).then(msg => {
           self.error(msg, { message: reason?.message });

src/display/fetch_stream.js

@@ -16,7 +16,7 @@
 import { AbortException, assert, warn } from "../shared/util.js";
 import {
   createHeaders,
-  createResponseStatusError,
+  createResponseError,
   extractFilenameFromHeader,
   getResponseOrigin,
   validateRangeRequestCapabilities,
@@ -127,7 +127,7 @@ class PDFFetchStreamReader {
         stream._responseOrigin = getResponseOrigin(response.url);
 
         if (!validateResponseStatus(response.status)) {
-          throw createResponseStatusError(response.status, url);
+          throw createResponseError(response.status, url);
         }
         this._reader = response.body.getReader();
         this._headersCapability.resolve();
@@ -230,7 +230,7 @@ class PDFFetchStreamRangeReader {
           );
         }
         if (!validateResponseStatus(response.status)) {
-          throw createResponseStatusError(response.status, url);
+          throw createResponseError(response.status, url);
         }
         this._readCapability.resolve();
         this._reader = response.body.getReader();

src/display/network.js

@@ -16,7 +16,7 @@
 import { assert, stringToBytes, warn } from "../shared/util.js";
 import {
   createHeaders,
-  createResponseStatusError,
+  createResponseError,
   extractFilenameFromHeader,
   getResponseOrigin,
   validateRangeRequestCapabilities,
@@ -329,7 +329,7 @@ class PDFNetworkStreamFullRequestReader {
   }
 
   _onError(status) {
-    this._storedError = createResponseStatusError(status, this._url);
+    this._storedError = createResponseError(status, this._url);
     this._headersCapability.reject(this._storedError);
     for (const requestCapability of this._requests) {
       requestCapability.reject(this._storedError);
@@ -454,7 +454,7 @@ class PDFNetworkStreamRangeRequestReader {
   }
 
   _onError(status) {
-    this._storedError ??= createResponseStatusError(status, this._url);
+    this._storedError ??= createResponseError(status, this._url);
     for (const requestCapability of this._requests) {
       requestCapability.reject(this._storedError);
     }

src/display/network_utils.js

@@ -13,11 +13,7 @@
  * limitations under the License.
  */
 
-import {
-  assert,
-  MissingPDFException,
-  UnexpectedResponseException,
-} from "../shared/util.js";
+import { assert, ResponseException } from "../shared/util.js";
 import { getFilenameFromContentDispositionHeader } from "./content_disposition.js";
 import { isPdfFile } from "./display_utils.js";
 
@@ -108,13 +104,11 @@ function extractFilenameFromHeader(responseHeaders) {
   return null;
 }
 
-function createResponseStatusError(status, url) {
-  if (status === 404 || (status === 0 && url.startsWith("file:"))) {
-    return new MissingPDFException('Missing PDF "' + url + '".');
-  }
-  return new UnexpectedResponseException(
+function createResponseError(status, url) {
+  return new ResponseException(
     `Unexpected server response (${status}) while retrieving PDF "${url}".`,
-    status
+    status,
+    /* missing = */ status === 404 || (status === 0 && url.startsWith("file:"))
   );
 }
 
@@ -124,7 +118,7 @@ function validateResponseStatus(status) {
 
 export {
   createHeaders,
-  createResponseStatusError,
+  createResponseError,
   extractFilenameFromHeader,
   getResponseOrigin,
   validateRangeRequestCapabilities,

src/display/node_stream.js

@@ -14,7 +14,8 @@
  */
 /* globals process */
 
-import { AbortException, assert, MissingPDFException } from "../shared/util.js";
+import { AbortException, assert } from "../shared/util.js";
+import { createResponseError } from "./network_utils.js";
 
 if (typeof PDFJSDev !== "undefined" && PDFJSDev.test("MOZCENTRAL")) {
   throw new Error(
@@ -111,7 +112,7 @@ class PDFNodeStreamFsFullReader {
       },
       error => {
         if (error.code === "ENOENT") {
-          error = new MissingPDFException(`Missing PDF "${this._url}".`);
+          error = createResponseError(/* status = */ 0, this._url.href);
         }
         this._storedError = error;
         this._headersCapability.reject(error);

src/pdf.js

@@ -31,13 +31,12 @@ import {
   FeatureTest,
   ImageKind,
   InvalidPDFException,
-  MissingPDFException,
   normalizeUnicode,
   OPS,
   PasswordResponses,
   PermissionFlag,
+  ResponseException,
   shadow,
-  UnexpectedResponseException,
   Util,
   VerbosityLevel,
 } from "./shared/util.js";
@@ -112,7 +111,6 @@ export {
   InvalidPDFException,
   isDataScheme,
   isPdfFile,
-  MissingPDFException,
   noContextMenu,
   normalizeUnicode,
   OPS,
@@ -124,12 +122,12 @@ export {
   PermissionFlag,
   PixelsPerInch,
   RenderingCancelledException,
+  ResponseException,
   setLayerDimensions,
   shadow,
   stopEvent,
   TextLayer,
   TouchManager,
-  UnexpectedResponseException,
   Util,
   VerbosityLevel,
   version,

src/shared/message_handler.js

@@ -17,9 +17,8 @@ import {
   AbortException,
   assert,
   InvalidPDFException,
-  MissingPDFException,
   PasswordException,
-  UnexpectedResponseException,
+  ResponseException,
   UnknownErrorException,
   unreachable,
 } from "./util.js";
@@ -46,9 +45,8 @@ function wrapReason(ex) {
   if (
     ex instanceof AbortException ||
     ex instanceof InvalidPDFException ||
-    ex instanceof MissingPDFException ||
     ex instanceof PasswordException ||
-    ex instanceof UnexpectedResponseException ||
+    ex instanceof ResponseException ||
     ex instanceof UnknownErrorException
   ) {
     // Avoid re-creating the exception when its type is already correct.
@@ -65,12 +63,10 @@ function wrapReason(ex) {
       return new AbortException(ex.message);
     case "InvalidPDFException":
       return new InvalidPDFException(ex.message);
-    case "MissingPDFException":
-      return new MissingPDFException(ex.message);
     case "PasswordException":
       return new PasswordException(ex.message, ex.code);
-    case "UnexpectedResponseException":
-      return new UnexpectedResponseException(ex.message, ex.status);
+    case "ResponseException":
+      return new ResponseException(ex.message, ex.status, ex.missing);
     case "UnknownErrorException":
       return new UnknownErrorException(ex.message, ex.details);
   }

src/shared/util.js

@@ -501,16 +501,11 @@ class InvalidPDFException extends BaseException {
   }
 }
 
-class MissingPDFException extends BaseException {
-  constructor(msg) {
-    super(msg, "MissingPDFException");
-  }
-}
-
-class UnexpectedResponseException extends BaseException {
-  constructor(msg, status) {
-    super(msg, "UnexpectedResponseException");
+class ResponseException extends BaseException {
+  constructor(msg, status, missing) {
+    super(msg, "ResponseException");
     this.status = status;
+    this.missing = missing;
   }
 }
 
@@ -1161,7 +1156,6 @@ export {
   LINE_DESCENT_FACTOR,
   LINE_FACTOR,
   MAX_IMAGE_SIZE_TO_CACHE,
-  MissingPDFException,
   normalizeUnicode,
   objectFromMap,
   objectSize,
@@ -1171,6 +1165,7 @@ export {
   PasswordResponses,
   PermissionFlag,
   RenderingIntentFlag,
+  ResponseException,
   setVerbosityLevel,
   shadow,
   string32,
@@ -1180,7 +1175,6 @@ export {
   TextRenderingMode,
   toBase64Util,
   toHexUtil,
-  UnexpectedResponseException,
   UnknownErrorException,
   unreachable,
   utf8StringToString,

test/unit/api_spec.js

@@ -20,12 +20,12 @@ import {
   ImageKind,
   InvalidPDFException,
   isNodeJS,
-  MissingPDFException,
   objectSize,
   OPS,
   PasswordException,
   PasswordResponses,
   PermissionFlag,
+  ResponseException,
   UnknownErrorException,
 } from "../../src/shared/util.js";
 import {
@@ -297,7 +297,9 @@ describe("api", function () {
         // Shouldn't get here.
         expect(false).toEqual(true);
       } catch (reason) {
-        expect(reason instanceof MissingPDFException).toEqual(true);
+        expect(reason instanceof ResponseException).toEqual(true);
+        expect(reason.status).toEqual(isNodeJS ? 0 : 404);
+        expect(reason.missing).toEqual(true);
       }
 
       await loadingTask.destroy();

test/unit/network_spec.js

@@ -13,10 +13,7 @@
  * limitations under the License.
  */
 
-import {
-  AbortException,
-  UnexpectedResponseException,
-} from "../../src/shared/util.js";
+import { AbortException, ResponseException } from "../../src/shared/util.js";
 import { PDFNetworkStream } from "../../src/display/network.js";
 import { testCrossOriginRedirects } from "./common_pdfstream_tests.js";
 import { TestPdfsServer } from "./test_utils.js";
@@ -155,8 +152,9 @@ describe("network", function () {
         // Shouldn't get here.
         expect(false).toEqual(true);
       } catch (ex) {
-        expect(ex instanceof UnexpectedResponseException).toEqual(true);
+        expect(ex instanceof ResponseException).toEqual(true);
         expect(ex.status).toEqual(0);
+        expect(ex.missing).toEqual(false);
       }
     }
 

test/unit/network_utils_spec.js

@@ -15,15 +15,12 @@
 
 import {
   createHeaders,
-  createResponseStatusError,
+  createResponseError,
   extractFilenameFromHeader,
   validateRangeRequestCapabilities,
   validateResponseStatus,
 } from "../../src/display/network_utils.js";
-import {
-  MissingPDFException,
-  UnexpectedResponseException,
-} from "../../src/shared/util.js";
+import { ResponseException } from "../../src/shared/util.js";
 
 describe("network_utils", function () {
   describe("createHeaders", function () {
@@ -370,31 +367,28 @@ describe("network_utils", function () {
     });
   });
 
-  describe("createResponseStatusError", function () {
-    it("handles missing PDF file responses", function () {
-      expect(createResponseStatusError(404, "https://foo.com/bar.pdf")).toEqual(
-        new MissingPDFException('Missing PDF "https://foo.com/bar.pdf".')
-      );
+  describe("createResponseError", function () {
+    function testCreateResponseError(url, status, missing) {
+      const error = createResponseError(status, url);
 
-      expect(createResponseStatusError(0, "file://foo.pdf")).toEqual(
-        new MissingPDFException('Missing PDF "file://foo.pdf".')
+      expect(error instanceof ResponseException).toEqual(true);
+      expect(error.message).toEqual(
+        `Unexpected server response (${status}) while retrieving PDF "${url}".`
       );
+      expect(error.status).toEqual(status);
+      expect(error.missing).toEqual(missing);
+    }
+
+    it("handles missing PDF file responses", function () {
+      testCreateResponseError("https://foo.com/bar.pdf", 404, true);
+
+      testCreateResponseError("file://foo.pdf", 0, true);
     });
 
     it("handles unexpected responses", function () {
-      expect(createResponseStatusError(302, "https://foo.com/bar.pdf")).toEqual(
-        new UnexpectedResponseException(
-          "Unexpected server response (302) while retrieving PDF " +
-            '"https://foo.com/bar.pdf".'
-        )
-      );
+      testCreateResponseError("https://foo.com/bar.pdf", 302, false);
 
-      expect(createResponseStatusError(0, "https://foo.com/bar.pdf")).toEqual(
-        new UnexpectedResponseException(
-          "Unexpected server response (0) while retrieving PDF " +
-            '"https://foo.com/bar.pdf".'
-        )
-      );
+      testCreateResponseError("https://foo.com/bar.pdf", 0, false);
     });
   });
 

test/unit/pdf_spec.js

@@ -23,13 +23,12 @@ import {
   ImageKind,
   InvalidPDFException,
   isNodeJS,
-  MissingPDFException,
   normalizeUnicode,
   OPS,
   PasswordResponses,
   PermissionFlag,
+  ResponseException,
   shadow,
-  UnexpectedResponseException,
   Util,
   VerbosityLevel,
 } from "../../src/shared/util.js";
@@ -90,7 +89,6 @@ const expectedAPI = Object.freeze({
   InvalidPDFException,
   isDataScheme,
   isPdfFile,
-  MissingPDFException,
   noContextMenu,
   normalizeUnicode,
   OPS,
@@ -102,12 +100,12 @@ const expectedAPI = Object.freeze({
   PermissionFlag,
   PixelsPerInch,
   RenderingCancelledException,
+  ResponseException,
   setLayerDimensions,
   shadow,
   stopEvent,
   TextLayer,
   TouchManager,
-  UnexpectedResponseException,
   Util,
   VerbosityLevel,
   version,