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      1 
      2 /*
      3  * Copyright 2010 The Android Open Source Project
      4  *
      5  * Use of this source code is governed by a BSD-style license that can be
      6  * found in the LICENSE file.
      7  */
      8 
      9 
     10 #include "Test.h"
     11 #include "SkData.h"
     12 #include "SkPDFTypes.h"
     13 #include "SkPDFFont.h"
     14 #include "SkStream.h"
     15 
     16 static bool stream_equals(const SkDynamicMemoryWStream& stream, size_t offset,
     17                           const char* buffer, size_t len) {
     18     SkAutoDataUnref data(stream.copyToData());
     19     if (offset + len > data->size()) {
     20         return false;
     21     }
     22     if (len != strlen(buffer)) {
     23         return false;
     24     }
     25     return memcmp(data->bytes() + offset, buffer, len) == 0;
     26 }
     27 
     28 void append_cmap_sections(const SkTDArray<SkUnichar>& glyphToUnicode,
     29                           const SkPDFGlyphSet* subset,
     30                           SkDynamicMemoryWStream* cmap);
     31 
     32 static void TestToUnicode(skiatest::Reporter* reporter) {
     33     SkTDArray<SkUnichar> glyphToUnicode;
     34     SkTDArray<uint16_t> glyphsInSubset;
     35     SkPDFGlyphSet subset;
     36 
     37     glyphToUnicode.push(0);  // 0
     38     glyphToUnicode.push(0);  // 1
     39     glyphToUnicode.push(0);  // 2
     40     glyphsInSubset.push(3);
     41     glyphToUnicode.push(0x20);  // 3
     42     glyphsInSubset.push(4);
     43     glyphToUnicode.push(0x25);  // 4
     44     glyphsInSubset.push(5);
     45     glyphToUnicode.push(0x27);  // 5
     46     glyphsInSubset.push(6);
     47     glyphToUnicode.push(0x28);  // 6
     48     glyphsInSubset.push(7);
     49     glyphToUnicode.push(0x29);  // 7
     50     glyphsInSubset.push(8);
     51     glyphToUnicode.push(0x2F);  // 8
     52     glyphsInSubset.push(9);
     53     glyphToUnicode.push(0x33);  // 9
     54     glyphToUnicode.push(0);  // 10
     55     glyphsInSubset.push(11);
     56     glyphToUnicode.push(0x35);  // 11
     57     glyphsInSubset.push(12);
     58     glyphToUnicode.push(0x36);  // 12
     59     for (uint16_t i = 13; i < 0xFE; ++i) {
     60         glyphToUnicode.push(0);  // Zero from index 0x9 to 0xFD
     61     }
     62     glyphsInSubset.push(0xFE);
     63     glyphToUnicode.push(0x1010);
     64     glyphsInSubset.push(0xFF);
     65     glyphToUnicode.push(0x1011);
     66     glyphsInSubset.push(0x100);
     67     glyphToUnicode.push(0x1012);
     68     glyphsInSubset.push(0x101);
     69     glyphToUnicode.push(0x1013);
     70 
     71     SkDynamicMemoryWStream buffer;
     72     subset.set(glyphsInSubset.begin(), glyphsInSubset.count());
     73     append_cmap_sections(glyphToUnicode, &subset, &buffer);
     74 
     75     char expectedResult[] =
     76 "4 beginbfchar\n\
     77 <0003> <0020>\n\
     78 <0004> <0025>\n\
     79 <0008> <002F>\n\
     80 <0009> <0033>\n\
     81 endbfchar\n\
     82 4 beginbfrange\n\
     83 <0005> <0007> <0027>\n\
     84 <000B> <000C> <0035>\n\
     85 <00FE> <00FF> <1010>\n\
     86 <0100> <0101> <1012>\n\
     87 endbfrange\n";
     88 
     89     REPORTER_ASSERT(reporter, stream_equals(buffer, 0, expectedResult,
     90                                             buffer.getOffset()));
     91 
     92     glyphToUnicode.reset();
     93     glyphsInSubset.reset();
     94     SkPDFGlyphSet subset2;
     95 
     96     // Test mapping:
     97     //           I  n  s  t  a  l
     98     // Glyph id 2c 51 56 57 44 4f
     99     // Unicode  49 6e 73 74 61 6c
    100     for (size_t i = 0; i < 100; ++i) {
    101       glyphToUnicode.push(i + 29);
    102     }
    103 
    104     glyphsInSubset.push(0x2C);
    105     glyphsInSubset.push(0x44);
    106     glyphsInSubset.push(0x4F);
    107     glyphsInSubset.push(0x51);
    108     glyphsInSubset.push(0x56);
    109     glyphsInSubset.push(0x57);
    110 
    111     SkDynamicMemoryWStream buffer2;
    112     subset2.set(glyphsInSubset.begin(), glyphsInSubset.count());
    113     append_cmap_sections(glyphToUnicode, &subset2, &buffer2);
    114 
    115     char expectedResult2[] =
    116 "4 beginbfchar\n\
    117 <002C> <0049>\n\
    118 <0044> <0061>\n\
    119 <004F> <006C>\n\
    120 <0051> <006E>\n\
    121 endbfchar\n\
    122 1 beginbfrange\n\
    123 <0056> <0057> <0073>\n\
    124 endbfrange\n";
    125 
    126     REPORTER_ASSERT(reporter, stream_equals(buffer2, 0, expectedResult2,
    127                                             buffer2.getOffset()));
    128 }
    129 
    130 #include "TestClassDef.h"
    131 DEFINE_TESTCLASS("ToUnicode", ToUnicodeTestClass, TestToUnicode)
    132