/* Copyright 2017 Mozilla Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import { CMap, CMapFactory, IdentityCMap } from "../../src/core/cmap.js";
import { CMAP_PARAMS } from "./test_utils.js";
import { DefaultCMapReaderFactory } from "../../src/display/api.js";
import { Name } from "../../src/core/primitives.js";
import { StringStream } from "../../src/core/stream.js";
describe("cmap", function () {
let fetchBuiltInCMap;
beforeAll(function () {
// Allow CMap testing in Node.js, e.g. for Travis.
const CMapReaderFactory = new DefaultCMapReaderFactory({
baseUrl: CMAP_PARAMS.cMapUrl,
isCompressed: CMAP_PARAMS.cMapPacked,
});
fetchBuiltInCMap = function (name) {
return CMapReaderFactory.fetch({
name,
});
};
});
afterAll(function () {
fetchBuiltInCMap = null;
});
it("parses beginbfchar", async function () {
// prettier-ignore
const str = "2 beginbfchar\n" +
"<03> <00>\n" +
"<04> <01>\n" +
"endbfchar\n";
const stream = new StringStream(str);
const cmap = await CMapFactory.create({ encoding: stream });
expect(cmap.lookup(0x03)).toEqual(String.fromCharCode(0x00));
expect(cmap.lookup(0x04)).toEqual(String.fromCharCode(0x01));
expect(cmap.lookup(0x05)).toBeUndefined();
});
it("parses beginbfrange with range", async function () {
// prettier-ignore
const str = "1 beginbfrange\n" +
"<06> <0B> 0\n" +
"endbfrange\n";
const stream = new StringStream(str);
const cmap = await CMapFactory.create({ encoding: stream });
expect(cmap.lookup(0x05)).toBeUndefined();
expect(cmap.lookup(0x06)).toEqual(String.fromCharCode(0x00));
expect(cmap.lookup(0x0b)).toEqual(String.fromCharCode(0x05));
expect(cmap.lookup(0x0c)).toBeUndefined();
});
it("parses beginbfrange with array", async function () {
// prettier-ignore
const str = "1 beginbfrange\n" +
"<0D> <12> [ 0 1 2 3 4 5 ]\n" +
"endbfrange\n";
const stream = new StringStream(str);
const cmap = await CMapFactory.create({ encoding: stream });
expect(cmap.lookup(0x0c)).toBeUndefined();
expect(cmap.lookup(0x0d)).toEqual(0x00);
expect(cmap.lookup(0x12)).toEqual(0x05);
expect(cmap.lookup(0x13)).toBeUndefined();
});
it("parses begincidchar", async function () {
// prettier-ignore
const str = "1 begincidchar\n" +
"<14> 0\n" +
"endcidchar\n";
const stream = new StringStream(str);
const cmap = await CMapFactory.create({ encoding: stream });
expect(cmap.lookup(0x14)).toEqual(0x00);
expect(cmap.lookup(0x15)).toBeUndefined();
});
it("parses begincidrange", async function () {
// prettier-ignore
const str = "1 begincidrange\n" +
"<0016> <001B> 0\n" +
"endcidrange\n";
const stream = new StringStream(str);
const cmap = await CMapFactory.create({ encoding: stream });
expect(cmap.lookup(0x15)).toBeUndefined();
expect(cmap.lookup(0x16)).toEqual(0x00);
expect(cmap.lookup(0x1b)).toEqual(0x05);
expect(cmap.lookup(0x1c)).toBeUndefined();
});
it("decodes codespace ranges", async function () {
// prettier-ignore
const str = "1 begincodespacerange\n" +
"<01> <02>\n" +
"<00000003> <00000004>\n" +
"endcodespacerange\n";
const stream = new StringStream(str);
const cmap = await CMapFactory.create({ encoding: stream });
const c = {};
cmap.readCharCode(String.fromCharCode(1), 0, c);
expect(c.charcode).toEqual(1);
expect(c.length).toEqual(1);
cmap.readCharCode(String.fromCharCode(0, 0, 0, 3), 0, c);
expect(c.charcode).toEqual(3);
expect(c.length).toEqual(4);
});
it("decodes 4 byte codespace ranges", async function () {
// prettier-ignore
const str = "1 begincodespacerange\n" +
"<8EA1A1A1> <8EA1FEFE>\n" +
"endcodespacerange\n";
const stream = new StringStream(str);
const cmap = await CMapFactory.create({ encoding: stream });
const c = {};
cmap.readCharCode(String.fromCharCode(0x8e, 0xa1, 0xa1, 0xa1), 0, c);
expect(c.charcode).toEqual(0x8ea1a1a1);
expect(c.length).toEqual(4);
});
it("read usecmap", async function () {
const str = "/Adobe-Japan1-1 usecmap\n";
const stream = new StringStream(str);
const cmap = await CMapFactory.create({
encoding: stream,
fetchBuiltInCMap,
useCMap: null,
});
expect(cmap instanceof CMap).toEqual(true);
expect(cmap.useCMap).not.toBeNull();
expect(cmap.builtInCMap).toBeFalsy();
expect(cmap.length).toEqual(0x20a7);
expect(cmap.isIdentityCMap).toEqual(false);
});
it("parses cmapname", async function () {
const str = "/CMapName /Identity-H def\n";
const stream = new StringStream(str);
const cmap = await CMapFactory.create({ encoding: stream });
expect(cmap.name).toEqual("Identity-H");
});
it("parses wmode", async function () {
const str = "/WMode 1 def\n";
const stream = new StringStream(str);
const cmap = await CMapFactory.create({ encoding: stream });
expect(cmap.vertical).toEqual(true);
});
it("loads built in cmap", async function () {
const cmap = await CMapFactory.create({
encoding: Name.get("Adobe-Japan1-1"),
fetchBuiltInCMap,
useCMap: null,
});
expect(cmap instanceof CMap).toEqual(true);
expect(cmap.useCMap).toBeNull();
expect(cmap.builtInCMap).toBeTruthy();
expect(cmap.length).toEqual(0x20a7);
expect(cmap.isIdentityCMap).toEqual(false);
});
it("loads built in identity cmap", async function () {
const cmap = await CMapFactory.create({
encoding: Name.get("Identity-H"),
fetchBuiltInCMap,
useCMap: null,
});
expect(cmap instanceof IdentityCMap).toEqual(true);
expect(cmap.vertical).toEqual(false);
expect(cmap.length).toEqual(0x10000);
expect(function () {
return cmap.isIdentityCMap;
}).toThrow(new Error("should not access .isIdentityCMap"));
});
it("attempts to load a non-existent built-in CMap", async function () {
try {
await CMapFactory.create({
encoding: Name.get("null"),
fetchBuiltInCMap,
useCMap: null,
});
// Shouldn't get here.
expect(false).toEqual(true);
} catch (reason) {
expect(reason instanceof Error).toEqual(true);
expect(reason.message).toEqual("Unknown CMap name: null");
}
});
it("attempts to load a built-in CMap without the necessary API parameters", async function () {
function tmpFetchBuiltInCMap(name) {
const CMapReaderFactory = new DefaultCMapReaderFactory({});
return CMapReaderFactory.fetch({ name });
}
try {
await CMapFactory.create({
encoding: Name.get("Adobe-Japan1-1"),
fetchBuiltInCMap: tmpFetchBuiltInCMap,
useCMap: null,
});
// Shouldn't get here.
expect(false).toEqual(true);
} catch (reason) {
expect(reason instanceof Error).toEqual(true);
expect(reason.message).toEqual(
'The CMap "baseUrl" parameter must be specified, ensure that ' +
'the "cMapUrl" and "cMapPacked" API parameters are provided.'
);
}
});
it("attempts to load a built-in CMap with inconsistent API parameters", async function () {
function tmpFetchBuiltInCMap(name) {
const CMapReaderFactory = new DefaultCMapReaderFactory({
baseUrl: CMAP_PARAMS.cMapUrl,
isCompressed: false,
});
return CMapReaderFactory.fetch({ name });
}
try {
await CMapFactory.create({
encoding: Name.get("Adobe-Japan1-1"),
fetchBuiltInCMap: tmpFetchBuiltInCMap,
useCMap: null,
});
// Shouldn't get here.
expect(false).toEqual(true);
} catch (reason) {
expect(reason instanceof Error).toEqual(true);
const message = reason.message;
expect(message.startsWith("Unable to load CMap at: ")).toEqual(true);
expect(message.endsWith("/external/bcmaps/Adobe-Japan1-1")).toEqual(true);
}
});
});