| /* |
| * Copyright (C) 2021 The Android Open Source Project |
| * |
| * 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. |
| */ |
| |
| #include "minikin/FontFileParser.h" |
| |
| #include <gtest/gtest.h> |
| |
| #include "FontTestUtils.h" |
| #include "FreeTypeMinikinFontForTest.h" |
| #include "PathUtils.h" |
| |
| namespace minikin { |
| namespace { |
| |
| static size_t writeU16(uint16_t x, uint8_t* out, size_t offset) { |
| out[offset] = x >> 8; |
| out[offset + 1] = x; |
| return offset + 2; |
| } |
| |
| static size_t writeU32(uint32_t x, uint8_t* out, size_t offset) { |
| out[offset] = x >> 24; |
| out[offset + 1] = x >> 16; |
| out[offset + 2] = x >> 8; |
| out[offset + 3] = x; |
| return offset + 4; |
| } |
| |
| class TestableFontFileParser : public FontFileParser { |
| public: |
| using FontFileParser::analyzeFontRevision; |
| using FontFileParser::checkPSName; |
| }; |
| |
| // Returns valid head table contents. |
| static std::vector<uint8_t> buildHeadTable(uint32_t fontRevision) { |
| std::vector<uint8_t> out(46); |
| size_t head = writeU16(1, out.data(), 0); // major version |
| head = writeU16(0, out.data(), head); // minor version |
| head = writeU32(fontRevision, out.data(), head); // fontRevision |
| head = writeU32(0xB1B0AFBA, out.data(), head); // checksum. (random value) |
| head = writeU32(0x5F0F3CF5, out.data(), head); // magicNumber |
| head = writeU16(0, out.data(), head); // flasgs |
| head = writeU16(1024, out.data(), head); // unitsPerEm |
| head = writeU32(123457890, out.data(), head); // created (random value) |
| head = writeU32(123457890, out.data(), head); // modified (random value) |
| head = writeU16(0, out.data(), head); // xMin |
| head = writeU16(100, out.data(), head); // yMin |
| head = writeU16(1024, out.data(), head); // xMax |
| head = writeU16(2048, out.data(), head); // yMax |
| head = writeU16(0, out.data(), head); // macStyle |
| head = writeU16(10, out.data(), head); // lowestRecPPEM |
| head = writeU16(1, out.data(), head); // fontDirectionHint |
| head = writeU16(1, out.data(), head); // indexToLocFormat |
| head = writeU16(0, out.data(), head); // glyphDataFormat; |
| |
| return out; |
| } |
| |
| TEST(FontFileParserTest, analyzeFontRevision) { |
| uint32_t rev = 0x12345678; |
| std::vector<uint8_t> head = buildHeadTable(rev); |
| |
| uint32_t out = 0; |
| EXPECT_TRUE(TestableFontFileParser::analyzeFontRevision(head.data(), head.size(), &out)); |
| EXPECT_EQ(rev, out); |
| } |
| |
| TEST(FontFileParserTest, headInvalidLength) { |
| uint32_t rev = 0x12345678; |
| std::vector<uint8_t> head = buildHeadTable(rev); |
| |
| uint32_t out = 0; |
| EXPECT_FALSE(TestableFontFileParser::analyzeFontRevision(head.data(), 6, &out)); |
| } |
| |
| TEST(FontFileParserTest, parseFontForRev) { |
| auto minikinFont = std::make_shared<FreeTypeMinikinFontForTest>(getTestFontPath("Ascii.ttf")); |
| auto parser = FontFileParser(minikinFont->GetFontData(), minikinFont->GetFontSize(), 0); |
| |
| auto revision = parser.getFontRevision(); |
| EXPECT_TRUE(revision.has_value()); |
| EXPECT_EQ(0x00010000u, revision.value()); |
| } |
| |
| TEST(FontFileParser, checkPSName) { |
| EXPECT_TRUE(TestableFontFileParser::checkPSName("Roboto-Regular")); |
| EXPECT_TRUE(TestableFontFileParser::checkPSName("NotoColorEmoji")); |
| |
| // Space character is not allowed. |
| EXPECT_FALSE(TestableFontFileParser::checkPSName("Roboto Regular")); |
| EXPECT_FALSE(TestableFontFileParser::checkPSName("Noto Color Emoji")); |
| |
| // parens are not not allowed. |
| EXPECT_FALSE(TestableFontFileParser::checkPSName("Roboto (Regular)")); |
| EXPECT_FALSE(TestableFontFileParser::checkPSName("Noto <Color> {Emoji}")); |
| |
| // control characters are not allowed |
| EXPECT_FALSE(TestableFontFileParser::checkPSName("Roboto-Regular\b")); |
| EXPECT_FALSE(TestableFontFileParser::checkPSName("NotoColorEmoji\t")); |
| |
| // Up to 63 character is allowed. |
| EXPECT_FALSE(TestableFontFileParser::checkPSName(std::string(64, 'a'))); |
| |
| // Only printable ASCII is allowed. |
| EXPECT_FALSE(TestableFontFileParser::checkPSName("ろぼとふぉんと")); |
| } |
| |
| TEST(FontFileParserTest, parseFontForPSName) { |
| auto minikinFont = std::make_shared<FreeTypeMinikinFontForTest>(getTestFontPath("Ascii.ttf")); |
| auto parser = FontFileParser(minikinFont->GetFontData(), minikinFont->GetFontSize(), 0); |
| |
| auto psName = parser.getPostScriptName(); |
| EXPECT_TRUE(psName.has_value()); |
| EXPECT_EQ("SampleFont-Regular", psName.value()); |
| } |
| |
| } // namespace |
| } // namespace minikin |