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- /*
- * Copyright 2010 The Android Open Source Project
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
- #include "tests/Test.h"
- #ifdef SK_SUPPORT_PDF
- #include "include/core/SkData.h"
- #include "include/core/SkStream.h"
- #include "include/private/SkTo.h"
- #include "src/pdf/SkPDFMakeToUnicodeCmap.h"
- #include "src/utils/SkBitSet.h"
- static constexpr SkGlyphID kMaximumGlyphIndex = UINT16_MAX;
- static bool stream_equals(const SkDynamicMemoryWStream& stream, size_t offset,
- const char* buffer, size_t len) {
- if (len != strlen(buffer)) {
- return false;
- }
- const size_t streamSize = stream.bytesWritten();
- if (offset + len > streamSize) {
- return false;
- }
- SkAutoTMalloc<char> data(streamSize);
- stream.copyTo(data.get());
- return memcmp(data.get() + offset, buffer, len) == 0;
- }
- DEF_TEST(SkPDF_ToUnicode, reporter) {
- SkTDArray<SkUnichar> glyphToUnicode;
- SkTDArray<uint16_t> glyphsInSubset;
- SkPDFGlyphUse subset(1, kMaximumGlyphIndex);
- glyphToUnicode.push_back(0); // 0
- glyphToUnicode.push_back(0); // 1
- glyphToUnicode.push_back(0); // 2
- glyphsInSubset.push_back(3);
- glyphToUnicode.push_back(0x20); // 3
- glyphsInSubset.push_back(4);
- glyphToUnicode.push_back(0x25); // 4
- glyphsInSubset.push_back(5);
- glyphToUnicode.push_back(0x27); // 5
- glyphsInSubset.push_back(6);
- glyphToUnicode.push_back(0x28); // 6
- glyphsInSubset.push_back(7);
- glyphToUnicode.push_back(0x29); // 7
- glyphsInSubset.push_back(8);
- glyphToUnicode.push_back(0x2F); // 8
- glyphsInSubset.push_back(9);
- glyphToUnicode.push_back(0x33); // 9
- glyphToUnicode.push_back(0); // 10
- glyphsInSubset.push_back(11);
- glyphToUnicode.push_back(0x35); // 11
- glyphsInSubset.push_back(12);
- glyphToUnicode.push_back(0x36); // 12
- glyphsInSubset.push_back(13);
- glyphToUnicode.push_back(0x37); // 13
- for (uint16_t i = 14; i < 0xFE; ++i) {
- glyphToUnicode.push_back(0); // Zero from index 0x9 to 0xFD
- }
- glyphsInSubset.push_back(0xFE);
- glyphToUnicode.push_back(0x1010);
- glyphsInSubset.push_back(0xFF);
- glyphToUnicode.push_back(0x1011);
- glyphsInSubset.push_back(0x100);
- glyphToUnicode.push_back(0x1012);
- glyphsInSubset.push_back(0x101);
- glyphToUnicode.push_back(0x1013);
- SkGlyphID lastGlyphID = SkToU16(glyphToUnicode.count() - 1);
- SkDynamicMemoryWStream buffer;
- for (uint16_t v : glyphsInSubset) {
- subset.set(v);
- }
- SkPDFAppendCmapSections(&glyphToUnicode[0], &subset, &buffer, true, 0,
- SkTMin<SkGlyphID>(0xFFFF, lastGlyphID));
- char expectedResult[] =
- "4 beginbfchar\n\
- <0003> <0020>\n\
- <0004> <0025>\n\
- <0008> <002F>\n\
- <0009> <0033>\n\
- endbfchar\n\
- 4 beginbfrange\n\
- <0005> <0007> <0027>\n\
- <000B> <000D> <0035>\n\
- <00FE> <00FF> <1010>\n\
- <0100> <0101> <1012>\n\
- endbfrange\n";
- REPORTER_ASSERT(reporter, stream_equals(buffer, 0, expectedResult,
- buffer.bytesWritten()));
- // Remove characters and ranges.
- buffer.reset();
- SkPDFAppendCmapSections(&glyphToUnicode[0], &subset, &buffer, true, 8,
- SkTMin<SkGlyphID>(0x00FF, lastGlyphID));
- char expectedResultChop1[] =
- "2 beginbfchar\n\
- <0008> <002F>\n\
- <0009> <0033>\n\
- endbfchar\n\
- 2 beginbfrange\n\
- <000B> <000D> <0035>\n\
- <00FE> <00FF> <1010>\n\
- endbfrange\n";
- REPORTER_ASSERT(reporter, stream_equals(buffer, 0, expectedResultChop1,
- buffer.bytesWritten()));
- // Remove characters from range to downdrade it to one char.
- buffer.reset();
- SkPDFAppendCmapSections(&glyphToUnicode[0], &subset, &buffer, true, 0x00D,
- SkTMin<SkGlyphID>(0x00FE, lastGlyphID));
- char expectedResultChop2[] =
- "2 beginbfchar\n\
- <000D> <0037>\n\
- <00FE> <1010>\n\
- endbfchar\n";
- REPORTER_ASSERT(reporter, stream_equals(buffer, 0, expectedResultChop2,
- buffer.bytesWritten()));
- buffer.reset();
- SkPDFAppendCmapSections(&glyphToUnicode[0], nullptr, &buffer, false, 0xFC,
- SkTMin<SkGlyphID>(0x110, lastGlyphID));
- char expectedResultSingleBytes[] =
- "2 beginbfchar\n\
- <01> <0000>\n\
- <02> <0000>\n\
- endbfchar\n\
- 1 beginbfrange\n\
- <03> <06> <1010>\n\
- endbfrange\n";
- REPORTER_ASSERT(reporter, stream_equals(buffer, 0,
- expectedResultSingleBytes,
- buffer.bytesWritten()));
- glyphToUnicode.reset();
- glyphsInSubset.reset();
- SkPDFGlyphUse subset2(1, kMaximumGlyphIndex);
- // Test mapping:
- // I n s t a l
- // Glyph id 2c 51 56 57 44 4f
- // Unicode 49 6e 73 74 61 6c
- for (SkUnichar i = 0; i < 100; ++i) {
- glyphToUnicode.push_back(i + 29);
- }
- lastGlyphID = SkToU16(glyphToUnicode.count() - 1);
- glyphsInSubset.push_back(0x2C);
- glyphsInSubset.push_back(0x44);
- glyphsInSubset.push_back(0x4F);
- glyphsInSubset.push_back(0x51);
- glyphsInSubset.push_back(0x56);
- glyphsInSubset.push_back(0x57);
- SkDynamicMemoryWStream buffer2;
- for (uint16_t v : glyphsInSubset) {
- subset2.set(v);
- }
- SkPDFAppendCmapSections(&glyphToUnicode[0], &subset2, &buffer2, true, 0,
- SkTMin<SkGlyphID>(0xFFFF, lastGlyphID));
- char expectedResult2[] =
- "4 beginbfchar\n\
- <002C> <0049>\n\
- <0044> <0061>\n\
- <004F> <006C>\n\
- <0051> <006E>\n\
- endbfchar\n\
- 1 beginbfrange\n\
- <0056> <0057> <0073>\n\
- endbfrange\n";
- REPORTER_ASSERT(reporter, stream_equals(buffer2, 0, expectedResult2,
- buffer2.bytesWritten()));
- }
- #endif
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