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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 "Test.h"
#ifdef SK_SUPPORT_PDF
#include "SkBitSet.h"
#include "SkData.h"
#include "SkPDFMakeToUnicodeCmap.h"
#include "SkStream.h"
#include "SkTo.h"
static const int kMaximumGlyphCount = UINT16_MAX + 1;
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;
SkBitSet subset(kMaximumGlyphCount);
glyphToUnicode.push(0); // 0
glyphToUnicode.push(0); // 1
glyphToUnicode.push(0); // 2
glyphsInSubset.push(3);
glyphToUnicode.push(0x20); // 3
glyphsInSubset.push(4);
glyphToUnicode.push(0x25); // 4
glyphsInSubset.push(5);
glyphToUnicode.push(0x27); // 5
glyphsInSubset.push(6);
glyphToUnicode.push(0x28); // 6
glyphsInSubset.push(7);
glyphToUnicode.push(0x29); // 7
glyphsInSubset.push(8);
glyphToUnicode.push(0x2F); // 8
glyphsInSubset.push(9);
glyphToUnicode.push(0x33); // 9
glyphToUnicode.push(0); // 10
glyphsInSubset.push(11);
glyphToUnicode.push(0x35); // 11
glyphsInSubset.push(12);
glyphToUnicode.push(0x36); // 12
glyphsInSubset.push(13);
glyphToUnicode.push(0x37); // 13
for (uint16_t i = 14; i < 0xFE; ++i) {
glyphToUnicode.push(0); // Zero from index 0x9 to 0xFD
}
glyphsInSubset.push(0xFE);
glyphToUnicode.push(0x1010);
glyphsInSubset.push(0xFF);
glyphToUnicode.push(0x1011);
glyphsInSubset.push(0x100);
glyphToUnicode.push(0x1012);
glyphsInSubset.push(0x101);
glyphToUnicode.push(0x1013);
SkGlyphID lastGlyphID = SkToU16(glyphToUnicode.count() - 1);
SkDynamicMemoryWStream buffer;
subset.setAll(glyphsInSubset.begin(), glyphsInSubset.count());
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();
SkBitSet subset2(kMaximumGlyphCount);
// 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(i + 29);
}
lastGlyphID = SkToU16(glyphToUnicode.count() - 1);
glyphsInSubset.push(0x2C);
glyphsInSubset.push(0x44);
glyphsInSubset.push(0x4F);
glyphsInSubset.push(0x51);
glyphsInSubset.push(0x56);
glyphsInSubset.push(0x57);
SkDynamicMemoryWStream buffer2;
subset2.setAll(glyphsInSubset.begin(), glyphsInSubset.count());
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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