| // Copyright 2015 PDFium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include <algorithm> |
| #include <memory> |
| #include <utility> |
| #include <vector> |
| |
| #include "build/build_config.h" |
| #include "core/fxcrt/fx_memory.h" |
| #include "core/fxge/fx_font.h" |
| #include "public/cpp/fpdf_scopers.h" |
| #include "public/fpdf_text.h" |
| #include "public/fpdf_transformpage.h" |
| #include "public/fpdfview.h" |
| #include "testing/embedder_test.h" |
| #include "testing/fx_string_testhelpers.h" |
| #include "testing/gtest/include/gtest/gtest.h" |
| |
| namespace { |
| |
| constexpr char kHelloGoodbyeText[] = "Hello, world!\r\nGoodbye, world!"; |
| constexpr int kHelloGoodbyeTextSize = FX_ArraySize(kHelloGoodbyeText); |
| |
| bool check_unsigned_shorts(const char* expected, |
| const unsigned short* actual, |
| size_t length) { |
| if (length > strlen(expected) + 1) |
| return false; |
| |
| for (size_t i = 0; i < length; ++i) { |
| if (actual[i] != static_cast<unsigned short>(expected[i])) |
| return false; |
| } |
| return true; |
| } |
| |
| } // namespace |
| |
| class FPDFTextEmbedderTest : public EmbedderTest {}; |
| |
| TEST_F(FPDFTextEmbedderTest, Text) { |
| ASSERT_TRUE(OpenDocument("hello_world.pdf")); |
| FPDF_PAGE page = LoadPage(0); |
| ASSERT_TRUE(page); |
| |
| FPDF_TEXTPAGE textpage = FPDFText_LoadPage(page); |
| ASSERT_TRUE(textpage); |
| |
| unsigned short buffer[128]; |
| memset(buffer, 0xbd, sizeof(buffer)); |
| |
| // Check that edge cases are handled gracefully |
| EXPECT_EQ(0, FPDFText_GetText(textpage, 0, 128, nullptr)); |
| EXPECT_EQ(0, FPDFText_GetText(textpage, -1, 128, buffer)); |
| EXPECT_EQ(0, FPDFText_GetText(textpage, 0, -1, buffer)); |
| EXPECT_EQ(1, FPDFText_GetText(textpage, 0, 0, buffer)); |
| EXPECT_EQ(0, buffer[0]); |
| |
| // Keep going and check the next case. |
| memset(buffer, 0xbd, sizeof(buffer)); |
| EXPECT_EQ(2, FPDFText_GetText(textpage, 0, 1, buffer)); |
| EXPECT_EQ(kHelloGoodbyeText[0], buffer[0]); |
| EXPECT_EQ(0, buffer[1]); |
| |
| // Check includes the terminating NUL that is provided. |
| int num_chars = FPDFText_GetText(textpage, 0, 128, buffer); |
| ASSERT_EQ(kHelloGoodbyeTextSize, num_chars); |
| EXPECT_TRUE( |
| check_unsigned_shorts(kHelloGoodbyeText, buffer, kHelloGoodbyeTextSize)); |
| |
| // Count does not include the terminating NUL in the string literal. |
| EXPECT_EQ(kHelloGoodbyeTextSize - 1, FPDFText_CountChars(textpage)); |
| for (size_t i = 0; i < kHelloGoodbyeTextSize - 1; ++i) { |
| EXPECT_EQ(static_cast<unsigned int>(kHelloGoodbyeText[i]), |
| FPDFText_GetUnicode(textpage, i)) |
| << " at " << i; |
| } |
| |
| // Extracting using a buffer that will be completely filled. Small buffer is |
| // 12 elements long, since it will need 2 locations per displayed character in |
| // the expected string, plus 2 more for the terminating character. |
| static const char kSmallExpected[] = "Hello"; |
| unsigned short small_buffer[12]; |
| memset(buffer, 0xbd, sizeof(buffer)); |
| EXPECT_EQ(6, FPDFText_GetText(textpage, 0, 5, small_buffer)); |
| EXPECT_TRUE(check_unsigned_shorts(kSmallExpected, small_buffer, |
| sizeof(kSmallExpected))); |
| |
| EXPECT_EQ(12.0, FPDFText_GetFontSize(textpage, 0)); |
| EXPECT_EQ(16.0, FPDFText_GetFontSize(textpage, 15)); |
| |
| double left = 0.0; |
| double right = 0.0; |
| double bottom = 0.0; |
| double top = 0.0; |
| EXPECT_FALSE(FPDFText_GetCharBox(nullptr, 4, &left, &right, &bottom, &top)); |
| EXPECT_DOUBLE_EQ(0.0, left); |
| EXPECT_DOUBLE_EQ(0.0, right); |
| EXPECT_DOUBLE_EQ(0.0, bottom); |
| EXPECT_DOUBLE_EQ(0.0, top); |
| EXPECT_FALSE(FPDFText_GetCharBox(textpage, -1, &left, &right, &bottom, &top)); |
| EXPECT_DOUBLE_EQ(0.0, left); |
| EXPECT_DOUBLE_EQ(0.0, right); |
| EXPECT_DOUBLE_EQ(0.0, bottom); |
| EXPECT_DOUBLE_EQ(0.0, top); |
| EXPECT_FALSE(FPDFText_GetCharBox(textpage, 55, &left, &right, &bottom, &top)); |
| EXPECT_DOUBLE_EQ(0.0, left); |
| EXPECT_DOUBLE_EQ(0.0, right); |
| EXPECT_DOUBLE_EQ(0.0, bottom); |
| EXPECT_DOUBLE_EQ(0.0, top); |
| |
| EXPECT_TRUE(FPDFText_GetCharBox(textpage, 4, &left, &right, &bottom, &top)); |
| EXPECT_NEAR(41.071, left, 0.001); |
| EXPECT_NEAR(46.243, right, 0.001); |
| EXPECT_NEAR(49.844, bottom, 0.001); |
| EXPECT_NEAR(55.520, top, 0.001); |
| |
| double x = 0.0; |
| double y = 0.0; |
| EXPECT_TRUE(FPDFText_GetCharOrigin(textpage, 4, &x, &y)); |
| EXPECT_NEAR(40.664, x, 0.001); |
| EXPECT_NEAR(50.000, y, 0.001); |
| |
| EXPECT_EQ(4, FPDFText_GetCharIndexAtPos(textpage, 42.0, 50.0, 1.0, 1.0)); |
| EXPECT_EQ(-1, FPDFText_GetCharIndexAtPos(textpage, 0.0, 0.0, 1.0, 1.0)); |
| EXPECT_EQ(-1, FPDFText_GetCharIndexAtPos(textpage, 199.0, 199.0, 1.0, 1.0)); |
| |
| // Test out of range indicies. |
| EXPECT_EQ(-1, |
| FPDFText_GetCharIndexAtPos(textpage, 42.0, 10000000.0, 1.0, 1.0)); |
| EXPECT_EQ(-1, FPDFText_GetCharIndexAtPos(textpage, -1.0, 50.0, 1.0, 1.0)); |
| |
| // Count does not include the terminating NUL in the string literal. |
| EXPECT_EQ(2, FPDFText_CountRects(textpage, 0, kHelloGoodbyeTextSize - 1)); |
| |
| left = 0.0; |
| right = 0.0; |
| bottom = 0.0; |
| top = 0.0; |
| EXPECT_TRUE(FPDFText_GetRect(textpage, 1, &left, &top, &right, &bottom)); |
| EXPECT_NEAR(20.847, left, 0.001); |
| EXPECT_NEAR(135.167, right, 0.001); |
| EXPECT_NEAR(96.655, bottom, 0.001); |
| EXPECT_NEAR(116.000, top, 0.001); |
| |
| // Test out of range indicies set outputs to (0.0, 0.0, 0.0, 0.0). |
| left = -1.0; |
| right = -1.0; |
| bottom = -1.0; |
| top = -1.0; |
| EXPECT_FALSE(FPDFText_GetRect(textpage, -1, &left, &top, &right, &bottom)); |
| EXPECT_EQ(0.0, left); |
| EXPECT_EQ(0.0, right); |
| EXPECT_EQ(0.0, bottom); |
| EXPECT_EQ(0.0, top); |
| |
| left = -2.0; |
| right = -2.0; |
| bottom = -2.0; |
| top = -2.0; |
| EXPECT_FALSE(FPDFText_GetRect(textpage, 2, &left, &top, &right, &bottom)); |
| EXPECT_EQ(0.0, left); |
| EXPECT_EQ(0.0, right); |
| EXPECT_EQ(0.0, bottom); |
| EXPECT_EQ(0.0, top); |
| |
| EXPECT_EQ( |
| 9, FPDFText_GetBoundedText(textpage, 41.0, 56.0, 82.0, 48.0, nullptr, 0)); |
| |
| // Extract starting at character 4 as above. |
| memset(buffer, 0xbd, sizeof(buffer)); |
| EXPECT_EQ( |
| 1, FPDFText_GetBoundedText(textpage, 41.0, 56.0, 82.0, 48.0, buffer, 1)); |
| EXPECT_TRUE(check_unsigned_shorts(kHelloGoodbyeText + 4, buffer, 1)); |
| EXPECT_EQ(0xbdbd, buffer[1]); |
| |
| memset(buffer, 0xbd, sizeof(buffer)); |
| EXPECT_EQ( |
| 9, FPDFText_GetBoundedText(textpage, 41.0, 56.0, 82.0, 48.0, buffer, 9)); |
| EXPECT_TRUE(check_unsigned_shorts(kHelloGoodbyeText + 4, buffer, 9)); |
| EXPECT_EQ(0xbdbd, buffer[9]); |
| |
| memset(buffer, 0xbd, sizeof(buffer)); |
| EXPECT_EQ(10, FPDFText_GetBoundedText(textpage, 41.0, 56.0, 82.0, 48.0, |
| buffer, 128)); |
| EXPECT_TRUE(check_unsigned_shorts(kHelloGoodbyeText + 4, buffer, 9)); |
| EXPECT_EQ(0u, buffer[9]); |
| EXPECT_EQ(0xbdbd, buffer[10]); |
| |
| FPDFText_ClosePage(textpage); |
| UnloadPage(page); |
| } |
| |
| TEST_F(FPDFTextEmbedderTest, TextSearch) { |
| ASSERT_TRUE(OpenDocument("hello_world.pdf")); |
| FPDF_PAGE page = LoadPage(0); |
| ASSERT_TRUE(page); |
| |
| FPDF_TEXTPAGE textpage = FPDFText_LoadPage(page); |
| ASSERT_TRUE(textpage); |
| |
| ScopedFPDFWideString nope = GetFPDFWideString(L"nope"); |
| ScopedFPDFWideString world = GetFPDFWideString(L"world"); |
| ScopedFPDFWideString world_caps = GetFPDFWideString(L"WORLD"); |
| ScopedFPDFWideString world_substr = GetFPDFWideString(L"orld"); |
| |
| { |
| // No occurrences of "nope" in test page. |
| ScopedFPDFTextFind search(FPDFText_FindStart(textpage, nope.get(), 0, 0)); |
| EXPECT_TRUE(search); |
| EXPECT_EQ(0, FPDFText_GetSchResultIndex(search.get())); |
| EXPECT_EQ(0, FPDFText_GetSchCount(search.get())); |
| |
| // Advancing finds nothing. |
| EXPECT_FALSE(FPDFText_FindNext(search.get())); |
| EXPECT_EQ(0, FPDFText_GetSchResultIndex(search.get())); |
| EXPECT_EQ(0, FPDFText_GetSchCount(search.get())); |
| |
| // Retreating finds nothing. |
| EXPECT_FALSE(FPDFText_FindPrev(search.get())); |
| EXPECT_EQ(0, FPDFText_GetSchResultIndex(search.get())); |
| EXPECT_EQ(0, FPDFText_GetSchCount(search.get())); |
| } |
| |
| { |
| // Two occurrences of "world" in test page. |
| ScopedFPDFTextFind search(FPDFText_FindStart(textpage, world.get(), 0, 2)); |
| EXPECT_TRUE(search); |
| |
| // Remains not found until advanced. |
| EXPECT_EQ(0, FPDFText_GetSchResultIndex(search.get())); |
| EXPECT_EQ(0, FPDFText_GetSchCount(search.get())); |
| |
| // First occurrence of "world" in this test page. |
| EXPECT_TRUE(FPDFText_FindNext(search.get())); |
| EXPECT_EQ(7, FPDFText_GetSchResultIndex(search.get())); |
| EXPECT_EQ(5, FPDFText_GetSchCount(search.get())); |
| |
| // Last occurrence of "world" in this test page. |
| EXPECT_TRUE(FPDFText_FindNext(search.get())); |
| EXPECT_EQ(24, FPDFText_GetSchResultIndex(search.get())); |
| EXPECT_EQ(5, FPDFText_GetSchCount(search.get())); |
| |
| // Found position unchanged when fails to advance. |
| EXPECT_FALSE(FPDFText_FindNext(search.get())); |
| EXPECT_EQ(24, FPDFText_GetSchResultIndex(search.get())); |
| EXPECT_EQ(5, FPDFText_GetSchCount(search.get())); |
| |
| // Back to first occurrence. |
| EXPECT_TRUE(FPDFText_FindPrev(search.get())); |
| EXPECT_EQ(7, FPDFText_GetSchResultIndex(search.get())); |
| EXPECT_EQ(5, FPDFText_GetSchCount(search.get())); |
| |
| // Found position unchanged when fails to retreat. |
| EXPECT_FALSE(FPDFText_FindPrev(search.get())); |
| EXPECT_EQ(7, FPDFText_GetSchResultIndex(search.get())); |
| EXPECT_EQ(5, FPDFText_GetSchCount(search.get())); |
| } |
| |
| { |
| // Exact search unaffected by case sensitiity and whole word flags. |
| ScopedFPDFTextFind search(FPDFText_FindStart( |
| textpage, world.get(), FPDF_MATCHCASE | FPDF_MATCHWHOLEWORD, 0)); |
| EXPECT_TRUE(search); |
| EXPECT_TRUE(FPDFText_FindNext(search.get())); |
| EXPECT_EQ(7, FPDFText_GetSchResultIndex(search.get())); |
| EXPECT_EQ(5, FPDFText_GetSchCount(search.get())); |
| } |
| |
| { |
| // Default is case-insensitive, so matching agaist caps works. |
| ScopedFPDFTextFind search( |
| FPDFText_FindStart(textpage, world_caps.get(), 0, 0)); |
| EXPECT_TRUE(search); |
| EXPECT_TRUE(FPDFText_FindNext(search.get())); |
| EXPECT_EQ(7, FPDFText_GetSchResultIndex(search.get())); |
| EXPECT_EQ(5, FPDFText_GetSchCount(search.get())); |
| } |
| |
| { |
| // But can be made case sensitive, in which case this fails. |
| ScopedFPDFTextFind search( |
| FPDFText_FindStart(textpage, world_caps.get(), FPDF_MATCHCASE, 0)); |
| EXPECT_FALSE(FPDFText_FindNext(search.get())); |
| EXPECT_EQ(0, FPDFText_GetSchResultIndex(search.get())); |
| EXPECT_EQ(0, FPDFText_GetSchCount(search.get())); |
| } |
| |
| { |
| // Default is match anywhere within word, so matching substring works. |
| ScopedFPDFTextFind search( |
| FPDFText_FindStart(textpage, world_substr.get(), 0, 0)); |
| EXPECT_TRUE(FPDFText_FindNext(search.get())); |
| EXPECT_EQ(8, FPDFText_GetSchResultIndex(search.get())); |
| EXPECT_EQ(4, FPDFText_GetSchCount(search.get())); |
| } |
| |
| { |
| // But can be made to mach word boundaries, in which case this fails. |
| ScopedFPDFTextFind search(FPDFText_FindStart(textpage, world_substr.get(), |
| FPDF_MATCHWHOLEWORD, 0)); |
| EXPECT_FALSE(FPDFText_FindNext(search.get())); |
| // TODO(tsepez): investigate strange index/count values in this state. |
| } |
| |
| FPDFText_ClosePage(textpage); |
| UnloadPage(page); |
| } |
| |
| TEST_F(FPDFTextEmbedderTest, TextSearchConsecutive) { |
| ASSERT_TRUE(OpenDocument("find_text_consecutive.pdf")); |
| FPDF_PAGE page = LoadPage(0); |
| ASSERT_TRUE(page); |
| |
| FPDF_TEXTPAGE textpage = FPDFText_LoadPage(page); |
| ASSERT_TRUE(textpage); |
| |
| ScopedFPDFWideString aaaa = GetFPDFWideString(L"aaaa"); |
| |
| { |
| // Search for "aaaa" yields 2 results in "aaaaaaaaaa". |
| ScopedFPDFTextFind search(FPDFText_FindStart(textpage, aaaa.get(), 0, 0)); |
| EXPECT_TRUE(search); |
| |
| // Remains not found until advanced. |
| EXPECT_EQ(0, FPDFText_GetSchResultIndex(search.get())); |
| EXPECT_EQ(0, FPDFText_GetSchCount(search.get())); |
| |
| // First occurrence of "aaaa" in this test page. |
| EXPECT_TRUE(FPDFText_FindNext(search.get())); |
| EXPECT_EQ(0, FPDFText_GetSchResultIndex(search.get())); |
| EXPECT_EQ(4, FPDFText_GetSchCount(search.get())); |
| |
| // Last occurrence of "aaaa" in this test page. |
| EXPECT_TRUE(FPDFText_FindNext(search.get())); |
| EXPECT_EQ(4, FPDFText_GetSchResultIndex(search.get())); |
| EXPECT_EQ(4, FPDFText_GetSchCount(search.get())); |
| |
| // Found position unchanged when fails to advance. |
| EXPECT_FALSE(FPDFText_FindNext(search.get())); |
| EXPECT_EQ(4, FPDFText_GetSchResultIndex(search.get())); |
| EXPECT_EQ(4, FPDFText_GetSchCount(search.get())); |
| |
| // Back to first occurrence. |
| EXPECT_TRUE(FPDFText_FindPrev(search.get())); |
| EXPECT_EQ(0, FPDFText_GetSchResultIndex(search.get())); |
| EXPECT_EQ(4, FPDFText_GetSchCount(search.get())); |
| |
| // Found position unchanged when fails to retreat. |
| EXPECT_FALSE(FPDFText_FindPrev(search.get())); |
| EXPECT_EQ(0, FPDFText_GetSchResultIndex(search.get())); |
| EXPECT_EQ(4, FPDFText_GetSchCount(search.get())); |
| } |
| |
| { |
| // Search for "aaaa" yields 7 results in "aaaaaaaaaa", when searching with |
| // FPDF_CONSECUTIVE. |
| ScopedFPDFTextFind search( |
| FPDFText_FindStart(textpage, aaaa.get(), FPDF_CONSECUTIVE, 0)); |
| EXPECT_TRUE(search); |
| |
| // Remains not found until advanced. |
| EXPECT_EQ(0, FPDFText_GetSchResultIndex(search.get())); |
| EXPECT_EQ(0, FPDFText_GetSchCount(search.get())); |
| |
| // Find consecutive occurrences of "aaaa" in this test page: |
| for (int i = 0; i < 7; ++i) { |
| EXPECT_TRUE(FPDFText_FindNext(search.get())); |
| EXPECT_EQ(i, FPDFText_GetSchResultIndex(search.get())); |
| EXPECT_EQ(4, FPDFText_GetSchCount(search.get())); |
| } |
| |
| // Found position unchanged when fails to advance. |
| EXPECT_FALSE(FPDFText_FindNext(search.get())); |
| EXPECT_EQ(6, FPDFText_GetSchResultIndex(search.get())); |
| EXPECT_EQ(4, FPDFText_GetSchCount(search.get())); |
| |
| for (int i = 5; i >= 0; --i) { |
| EXPECT_TRUE(FPDFText_FindPrev(search.get())); |
| EXPECT_EQ(i, FPDFText_GetSchResultIndex(search.get())); |
| EXPECT_EQ(4, FPDFText_GetSchCount(search.get())); |
| } |
| |
| // Found position unchanged when fails to retreat. |
| EXPECT_FALSE(FPDFText_FindPrev(search.get())); |
| EXPECT_EQ(0, FPDFText_GetSchResultIndex(search.get())); |
| EXPECT_EQ(4, FPDFText_GetSchCount(search.get())); |
| } |
| |
| FPDFText_ClosePage(textpage); |
| UnloadPage(page); |
| } |
| |
| // Fails on Windows. https://crbug.com/pdfium/1370 |
| #if defined(OS_WIN) |
| #define MAYBE_TextSearchLatinExtended DISABLED_TextSearchLatinExtended |
| #else |
| #define MAYBE_TextSearchLatinExtended TextSearchLatinExtended |
| #endif |
| TEST_F(FPDFTextEmbedderTest, MAYBE_TextSearchLatinExtended) { |
| ASSERT_TRUE(OpenDocument("latin_extended.pdf")); |
| FPDF_PAGE page = LoadPage(0); |
| ASSERT_TRUE(page); |
| |
| FPDF_TEXTPAGE textpage = FPDFText_LoadPage(page); |
| ASSERT_TRUE(textpage); |
| |
| // Upper/lowercase 'a' with breve. |
| constexpr FPDF_WCHAR kNeedleUpper[] = {0x0102, 0x0000}; |
| constexpr FPDF_WCHAR kNeedleLower[] = {0x0103, 0x0000}; |
| |
| for (const auto* needle : {kNeedleUpper, kNeedleLower}) { |
| ScopedFPDFTextFind search(FPDFText_FindStart(textpage, needle, 0, 0)); |
| EXPECT_TRUE(search); |
| EXPECT_EQ(0, FPDFText_GetSchResultIndex(search.get())); |
| EXPECT_EQ(0, FPDFText_GetSchCount(search.get())); |
| |
| // Should find 2 results at position 21/22, both with length 1. |
| EXPECT_TRUE(FPDFText_FindNext(search.get())); |
| EXPECT_EQ(2, FPDFText_GetSchResultIndex(search.get())); |
| EXPECT_EQ(1, FPDFText_GetSchCount(search.get())); |
| EXPECT_TRUE(FPDFText_FindNext(search.get())); |
| EXPECT_EQ(3, FPDFText_GetSchResultIndex(search.get())); |
| EXPECT_EQ(1, FPDFText_GetSchCount(search.get())); |
| // And no more than 2 results. |
| EXPECT_FALSE(FPDFText_FindNext(search.get())); |
| } |
| |
| FPDFText_ClosePage(textpage); |
| UnloadPage(page); |
| } |
| |
| // Test that the page has characters despite a bad stream length. |
| TEST_F(FPDFTextEmbedderTest, StreamLengthPastEndOfFile) { |
| ASSERT_TRUE(OpenDocument("bug_57.pdf")); |
| FPDF_PAGE page = LoadPage(0); |
| ASSERT_TRUE(page); |
| |
| FPDF_TEXTPAGE textpage = FPDFText_LoadPage(page); |
| ASSERT_TRUE(textpage); |
| EXPECT_EQ(13, FPDFText_CountChars(textpage)); |
| |
| FPDFText_ClosePage(textpage); |
| UnloadPage(page); |
| } |
| |
| TEST_F(FPDFTextEmbedderTest, WebLinks) { |
| ASSERT_TRUE(OpenDocument("weblinks.pdf")); |
| FPDF_PAGE page = LoadPage(0); |
| ASSERT_TRUE(page); |
| |
| FPDF_TEXTPAGE textpage = FPDFText_LoadPage(page); |
| ASSERT_TRUE(textpage); |
| |
| { |
| ScopedFPDFPageLink pagelink(FPDFLink_LoadWebLinks(textpage)); |
| EXPECT_TRUE(pagelink); |
| |
| // Page contains two HTTP-style URLs. |
| EXPECT_EQ(2, FPDFLink_CountWebLinks(pagelink.get())); |
| |
| // Only a terminating NUL required for bogus links. |
| EXPECT_EQ(1, FPDFLink_GetURL(pagelink.get(), 2, nullptr, 0)); |
| EXPECT_EQ(1, FPDFLink_GetURL(pagelink.get(), 1400, nullptr, 0)); |
| EXPECT_EQ(1, FPDFLink_GetURL(pagelink.get(), -1, nullptr, 0)); |
| } |
| |
| FPDF_PAGELINK pagelink = FPDFLink_LoadWebLinks(textpage); |
| EXPECT_TRUE(pagelink); |
| |
| // Query the number of characters required for each link (incl NUL). |
| EXPECT_EQ(25, FPDFLink_GetURL(pagelink, 0, nullptr, 0)); |
| EXPECT_EQ(26, FPDFLink_GetURL(pagelink, 1, nullptr, 0)); |
| |
| static const char expected_url[] = "http://example.com?q=foo"; |
| static const size_t expected_len = sizeof(expected_url); |
| unsigned short buffer[128]; |
| |
| // Retrieve a link with too small a buffer. Buffer will not be |
| // NUL-terminated, but must not be modified past indicated length, |
| // so pre-fill with a pattern to check write bounds. |
| memset(buffer, 0xbd, sizeof(buffer)); |
| EXPECT_EQ(1, FPDFLink_GetURL(pagelink, 0, buffer, 1)); |
| EXPECT_TRUE(check_unsigned_shorts(expected_url, buffer, 1)); |
| EXPECT_EQ(0xbdbd, buffer[1]); |
| |
| // Check buffer that doesn't have space for a terminating NUL. |
| memset(buffer, 0xbd, sizeof(buffer)); |
| EXPECT_EQ(static_cast<int>(expected_len - 1), |
| FPDFLink_GetURL(pagelink, 0, buffer, expected_len - 1)); |
| EXPECT_TRUE(check_unsigned_shorts(expected_url, buffer, expected_len - 1)); |
| EXPECT_EQ(0xbdbd, buffer[expected_len - 1]); |
| |
| // Retreive link with exactly-sized buffer. |
| memset(buffer, 0xbd, sizeof(buffer)); |
| EXPECT_EQ(static_cast<int>(expected_len), |
| FPDFLink_GetURL(pagelink, 0, buffer, expected_len)); |
| EXPECT_TRUE(check_unsigned_shorts(expected_url, buffer, expected_len)); |
| EXPECT_EQ(0u, buffer[expected_len - 1]); |
| EXPECT_EQ(0xbdbd, buffer[expected_len]); |
| |
| // Retreive link with ample-sized-buffer. |
| memset(buffer, 0xbd, sizeof(buffer)); |
| EXPECT_EQ(static_cast<int>(expected_len), |
| FPDFLink_GetURL(pagelink, 0, buffer, 128)); |
| EXPECT_TRUE(check_unsigned_shorts(expected_url, buffer, expected_len)); |
| EXPECT_EQ(0u, buffer[expected_len - 1]); |
| EXPECT_EQ(0xbdbd, buffer[expected_len]); |
| |
| // Each link rendered in a single rect in this test page. |
| EXPECT_EQ(1, FPDFLink_CountRects(pagelink, 0)); |
| EXPECT_EQ(1, FPDFLink_CountRects(pagelink, 1)); |
| |
| // Each link rendered in a single rect in this test page. |
| EXPECT_EQ(0, FPDFLink_CountRects(pagelink, -1)); |
| EXPECT_EQ(0, FPDFLink_CountRects(pagelink, 2)); |
| EXPECT_EQ(0, FPDFLink_CountRects(pagelink, 10000)); |
| |
| // Check boundary of valid link index with valid rect index. |
| double left = 0.0; |
| double right = 0.0; |
| double top = 0.0; |
| double bottom = 0.0; |
| EXPECT_TRUE(FPDFLink_GetRect(pagelink, 0, 0, &left, &top, &right, &bottom)); |
| EXPECT_NEAR(50.791, left, 0.001); |
| EXPECT_NEAR(187.963, right, 0.001); |
| EXPECT_NEAR(97.624, bottom, 0.001); |
| EXPECT_NEAR(108.736, top, 0.001); |
| |
| // Check that valid link with invalid rect index leaves parameters unchanged. |
| left = -1.0; |
| right = -1.0; |
| top = -1.0; |
| bottom = -1.0; |
| EXPECT_FALSE(FPDFLink_GetRect(pagelink, 0, 1, &left, &top, &right, &bottom)); |
| EXPECT_EQ(-1.0, left); |
| EXPECT_EQ(-1.0, right); |
| EXPECT_EQ(-1.0, bottom); |
| EXPECT_EQ(-1.0, top); |
| |
| // Check that invalid link index leaves parameters unchanged. |
| left = -2.0; |
| right = -2.0; |
| top = -2.0; |
| bottom = -2.0; |
| EXPECT_FALSE(FPDFLink_GetRect(pagelink, -1, 0, &left, &top, &right, &bottom)); |
| EXPECT_EQ(-2.0, left); |
| EXPECT_EQ(-2.0, right); |
| EXPECT_EQ(-2.0, bottom); |
| EXPECT_EQ(-2.0, top); |
| |
| FPDFLink_CloseWebLinks(pagelink); |
| FPDFText_ClosePage(textpage); |
| UnloadPage(page); |
| } |
| |
| TEST_F(FPDFTextEmbedderTest, WebLinksAcrossLines) { |
| ASSERT_TRUE(OpenDocument("weblinks_across_lines.pdf")); |
| FPDF_PAGE page = LoadPage(0); |
| ASSERT_TRUE(page); |
| |
| FPDF_TEXTPAGE textpage = FPDFText_LoadPage(page); |
| ASSERT_TRUE(textpage); |
| |
| FPDF_PAGELINK pagelink = FPDFLink_LoadWebLinks(textpage); |
| EXPECT_TRUE(pagelink); |
| |
| static const char* const kExpectedUrls[] = { |
| "http://example.com", // from "http://www.example.com?\r\nfoo" |
| "http://example.com/", // from "http://www.example.com/\r\nfoo" |
| "http://example.com/test-foo", // from "http://example.com/test-\r\nfoo" |
| "http://abc.com/test-foo", // from "http://abc.com/test-\r\n\r\nfoo" |
| // Next two links from "http://www.example.com/\r\nhttp://www.abc.com/" |
| "http://example.com/", |
| "http://www.abc.com", |
| }; |
| static const int kNumLinks = static_cast<int>(FX_ArraySize(kExpectedUrls)); |
| |
| EXPECT_EQ(kNumLinks, FPDFLink_CountWebLinks(pagelink)); |
| |
| unsigned short buffer[128]; |
| for (int i = 0; i < kNumLinks; i++) { |
| const size_t expected_len = strlen(kExpectedUrls[i]) + 1; |
| memset(buffer, 0, sizeof(buffer)); |
| EXPECT_EQ(static_cast<int>(expected_len), |
| FPDFLink_GetURL(pagelink, i, nullptr, 0)); |
| EXPECT_EQ(static_cast<int>(expected_len), |
| FPDFLink_GetURL(pagelink, i, buffer, FX_ArraySize(buffer))); |
| EXPECT_TRUE(check_unsigned_shorts(kExpectedUrls[i], buffer, expected_len)); |
| } |
| |
| FPDFLink_CloseWebLinks(pagelink); |
| FPDFText_ClosePage(textpage); |
| UnloadPage(page); |
| } |
| |
| TEST_F(FPDFTextEmbedderTest, WebLinksAcrossLinesBug) { |
| ASSERT_TRUE(OpenDocument("bug_650.pdf")); |
| FPDF_PAGE page = LoadPage(0); |
| ASSERT_TRUE(page); |
| |
| FPDF_TEXTPAGE textpage = FPDFText_LoadPage(page); |
| ASSERT_TRUE(textpage); |
| |
| FPDF_PAGELINK pagelink = FPDFLink_LoadWebLinks(textpage); |
| EXPECT_TRUE(pagelink); |
| |
| EXPECT_EQ(2, FPDFLink_CountWebLinks(pagelink)); |
| unsigned short buffer[128] = {0}; |
| static const char kExpectedUrl[] = |
| "http://tutorial45.com/learn-autocad-basics-day-166/"; |
| static const int kUrlSize = static_cast<int>(sizeof(kExpectedUrl)); |
| |
| EXPECT_EQ(kUrlSize, FPDFLink_GetURL(pagelink, 1, nullptr, 0)); |
| EXPECT_EQ(kUrlSize, |
| FPDFLink_GetURL(pagelink, 1, buffer, FX_ArraySize(buffer))); |
| EXPECT_TRUE(check_unsigned_shorts(kExpectedUrl, buffer, kUrlSize)); |
| |
| FPDFLink_CloseWebLinks(pagelink); |
| FPDFText_ClosePage(textpage); |
| UnloadPage(page); |
| } |
| |
| TEST_F(FPDFTextEmbedderTest, WebLinksCharRanges) { |
| ASSERT_TRUE(OpenDocument("weblinks.pdf")); |
| FPDF_PAGE page = LoadPage(0); |
| ASSERT_TRUE(page); |
| |
| FPDF_TEXTPAGE text_page = FPDFText_LoadPage(page); |
| ASSERT_TRUE(text_page); |
| |
| FPDF_PAGELINK page_link = FPDFLink_LoadWebLinks(text_page); |
| EXPECT_TRUE(page_link); |
| |
| // Test for char indices of a valid link |
| int start_char_index; |
| int char_count; |
| ASSERT_TRUE( |
| FPDFLink_GetTextRange(page_link, 0, &start_char_index, &char_count)); |
| EXPECT_EQ(35, start_char_index); |
| EXPECT_EQ(24, char_count); |
| |
| // Test for char indices of an invalid link |
| start_char_index = -10; |
| char_count = -8; |
| ASSERT_FALSE( |
| FPDFLink_GetTextRange(page_link, 6, &start_char_index, &char_count)); |
| EXPECT_EQ(start_char_index, -10); |
| EXPECT_EQ(char_count, -8); |
| |
| // Test for pagelink = nullptr |
| start_char_index = -10; |
| char_count = -8; |
| ASSERT_FALSE( |
| FPDFLink_GetTextRange(nullptr, 0, &start_char_index, &char_count)); |
| EXPECT_EQ(start_char_index, -10); |
| EXPECT_EQ(char_count, -8); |
| |
| // Test for link_index < 0 |
| start_char_index = -10; |
| char_count = -8; |
| ASSERT_FALSE( |
| FPDFLink_GetTextRange(page_link, -4, &start_char_index, &char_count)); |
| EXPECT_EQ(start_char_index, -10); |
| EXPECT_EQ(char_count, -8); |
| |
| FPDFLink_CloseWebLinks(page_link); |
| FPDFText_ClosePage(text_page); |
| UnloadPage(page); |
| } |
| |
| TEST_F(FPDFTextEmbedderTest, AnnotLinks) { |
| ASSERT_TRUE(OpenDocument("link_annots.pdf")); |
| FPDF_PAGE page = LoadPage(0); |
| ASSERT_TRUE(page); |
| |
| // Get link count via checking annotation subtype |
| int annot_count = FPDFPage_GetAnnotCount(page); |
| ASSERT_EQ(8, annot_count); |
| int annot_subtype_link_count = 0; |
| for (int i = 0; i < annot_count; ++i) { |
| ScopedFPDFAnnotation annot(FPDFPage_GetAnnot(page, i)); |
| if (FPDFAnnot_GetSubtype(annot.get()) == FPDF_ANNOT_LINK) { |
| ++annot_subtype_link_count; |
| } |
| } |
| EXPECT_EQ(4, annot_subtype_link_count); |
| |
| // Validate that FPDFLink_Enumerate() returns same number of links |
| int start_pos = 0; |
| FPDF_LINK link_annot; |
| int link_count = 0; |
| while (FPDFLink_Enumerate(page, &start_pos, &link_annot)) { |
| ASSERT_TRUE(link_annot); |
| if (start_pos == 1 || start_pos == 2) { |
| // First two links point to first and second page within the document |
| // respectively |
| FPDF_DEST link_dest = FPDFLink_GetDest(document(), link_annot); |
| EXPECT_TRUE(link_dest); |
| EXPECT_EQ(start_pos - 1, |
| FPDFDest_GetDestPageIndex(document(), link_dest)); |
| } else if (start_pos == 3) { // points to PDF Spec URL |
| FS_RECTF link_rect; |
| EXPECT_TRUE(FPDFLink_GetAnnotRect(link_annot, &link_rect)); |
| EXPECT_NEAR(66.0, link_rect.left, 0.001); |
| EXPECT_NEAR(544.0, link_rect.top, 0.001); |
| EXPECT_NEAR(196.0, link_rect.right, 0.001); |
| EXPECT_NEAR(529.0, link_rect.bottom, 0.001); |
| } else if (start_pos == 4) { // this link has quad points |
| int quad_point_count = FPDFLink_CountQuadPoints(link_annot); |
| EXPECT_EQ(1, quad_point_count); |
| FS_QUADPOINTSF quad_points; |
| EXPECT_TRUE(FPDFLink_GetQuadPoints(link_annot, 0, &quad_points)); |
| EXPECT_NEAR(83.0, quad_points.x1, 0.001); |
| EXPECT_NEAR(453.0, quad_points.y1, 0.001); |
| EXPECT_NEAR(178.0, quad_points.x2, 0.001); |
| EXPECT_NEAR(453.0, quad_points.y2, 0.001); |
| EXPECT_NEAR(83.0, quad_points.x3, 0.001); |
| EXPECT_NEAR(440.0, quad_points.y3, 0.001); |
| EXPECT_NEAR(178.0, quad_points.x4, 0.001); |
| EXPECT_NEAR(440.0, quad_points.y4, 0.001); |
| // AnnotRect is same as quad points for this link |
| FS_RECTF link_rect; |
| EXPECT_TRUE(FPDFLink_GetAnnotRect(link_annot, &link_rect)); |
| EXPECT_NEAR(link_rect.left, quad_points.x1, 0.001); |
| EXPECT_NEAR(link_rect.top, quad_points.y1, 0.001); |
| EXPECT_NEAR(link_rect.right, quad_points.x4, 0.001); |
| EXPECT_NEAR(link_rect.bottom, quad_points.y4, 0.001); |
| } |
| ++link_count; |
| } |
| EXPECT_EQ(annot_subtype_link_count, link_count); |
| |
| UnloadPage(page); |
| } |
| |
| TEST_F(FPDFTextEmbedderTest, GetFontSize) { |
| ASSERT_TRUE(OpenDocument("hello_world.pdf")); |
| FPDF_PAGE page = LoadPage(0); |
| ASSERT_TRUE(page); |
| |
| FPDF_TEXTPAGE textpage = FPDFText_LoadPage(page); |
| ASSERT_TRUE(textpage); |
| |
| const double kExpectedFontsSizes[] = {12, 12, 12, 12, 12, 12, 12, 12, 12, 12, |
| 12, 12, 12, 1, 1, 16, 16, 16, 16, 16, |
| 16, 16, 16, 16, 16, 16, 16, 16, 16, 16}; |
| |
| int count = FPDFText_CountChars(textpage); |
| ASSERT_EQ(FX_ArraySize(kExpectedFontsSizes), static_cast<size_t>(count)); |
| for (int i = 0; i < count; ++i) |
| EXPECT_EQ(kExpectedFontsSizes[i], FPDFText_GetFontSize(textpage, i)) << i; |
| |
| FPDFText_ClosePage(textpage); |
| UnloadPage(page); |
| } |
| |
| TEST_F(FPDFTextEmbedderTest, GetFontInfo) { |
| ASSERT_TRUE(OpenDocument("hello_world.pdf")); |
| FPDF_PAGE page = LoadPage(0); |
| ASSERT_TRUE(page); |
| |
| FPDF_TEXTPAGE textpage = FPDFText_LoadPage(page); |
| ASSERT_TRUE(textpage); |
| std::vector<char> font_name; |
| size_t num_chars1 = strlen("Hello, world!"); |
| const char kExpectedFontName1[] = "Times-Roman"; |
| |
| for (size_t i = 0; i < num_chars1; i++) { |
| int flags = -1; |
| unsigned long length = |
| FPDFText_GetFontInfo(textpage, i, nullptr, 0, &flags); |
| static constexpr unsigned long expected_length = sizeof(kExpectedFontName1); |
| ASSERT_EQ(expected_length, length); |
| EXPECT_EQ(FXFONT_NONSYMBOLIC, flags); |
| font_name.resize(length); |
| std::fill(font_name.begin(), font_name.end(), 'a'); |
| flags = -1; |
| EXPECT_EQ(expected_length, |
| FPDFText_GetFontInfo(textpage, i, font_name.data(), |
| font_name.size(), &flags)); |
| EXPECT_STREQ(kExpectedFontName1, font_name.data()); |
| EXPECT_EQ(FXFONT_NONSYMBOLIC, flags); |
| } |
| // If the size of the buffer is not large enough, the buffer should remain |
| // unchanged. |
| font_name.pop_back(); |
| std::fill(font_name.begin(), font_name.end(), 'a'); |
| EXPECT_EQ(sizeof(kExpectedFontName1), |
| FPDFText_GetFontInfo(textpage, 0, font_name.data(), |
| font_name.size(), nullptr)); |
| for (char a : font_name) |
| EXPECT_EQ('a', a); |
| |
| // The text is "Hello, world!\r\nGoodbye, world!", so the next two characters |
| // do not have any font information. |
| EXPECT_EQ(0u, FPDFText_GetFontInfo(textpage, num_chars1, font_name.data(), |
| font_name.size(), nullptr)); |
| EXPECT_EQ(0u, FPDFText_GetFontInfo(textpage, num_chars1 + 1, font_name.data(), |
| font_name.size(), nullptr)); |
| |
| size_t num_chars2 = strlen("Goodbye, world!"); |
| const char kExpectedFontName2[] = "Helvetica"; |
| for (size_t i = num_chars1 + 2; i < num_chars1 + num_chars2 + 2; i++) { |
| int flags = -1; |
| unsigned long length = |
| FPDFText_GetFontInfo(textpage, i, nullptr, 0, &flags); |
| static constexpr unsigned long expected_length = sizeof(kExpectedFontName2); |
| ASSERT_EQ(expected_length, length); |
| EXPECT_EQ(FXFONT_NONSYMBOLIC, flags); |
| font_name.resize(length); |
| std::fill(font_name.begin(), font_name.end(), 'a'); |
| flags = -1; |
| EXPECT_EQ(expected_length, |
| FPDFText_GetFontInfo(textpage, i, font_name.data(), |
| font_name.size(), &flags)); |
| EXPECT_STREQ(kExpectedFontName2, font_name.data()); |
| EXPECT_EQ(FXFONT_NONSYMBOLIC, flags); |
| } |
| |
| // Now try some out of bounds indices and null pointers to make sure we do not |
| // crash. |
| // No textpage. |
| EXPECT_EQ(0u, FPDFText_GetFontInfo(nullptr, 0, font_name.data(), |
| font_name.size(), nullptr)); |
| // No buffer. |
| EXPECT_EQ(sizeof(kExpectedFontName1), |
| FPDFText_GetFontInfo(textpage, 0, nullptr, 0, nullptr)); |
| // Negative index. |
| EXPECT_EQ(0u, FPDFText_GetFontInfo(textpage, -1, font_name.data(), |
| font_name.size(), nullptr)); |
| // Out of bounds index. |
| EXPECT_EQ(0u, FPDFText_GetFontInfo(textpage, 1000, font_name.data(), |
| font_name.size(), nullptr)); |
| |
| FPDFText_ClosePage(textpage); |
| UnloadPage(page); |
| } |
| |
| TEST_F(FPDFTextEmbedderTest, ToUnicode) { |
| ASSERT_TRUE(OpenDocument("bug_583.pdf")); |
| FPDF_PAGE page = LoadPage(0); |
| ASSERT_TRUE(page); |
| |
| FPDF_TEXTPAGE textpage = FPDFText_LoadPage(page); |
| ASSERT_TRUE(textpage); |
| |
| ASSERT_EQ(1, FPDFText_CountChars(textpage)); |
| EXPECT_EQ(0U, FPDFText_GetUnicode(textpage, 0)); |
| |
| FPDFText_ClosePage(textpage); |
| UnloadPage(page); |
| } |
| |
| TEST_F(FPDFTextEmbedderTest, Bug_921) { |
| ASSERT_TRUE(OpenDocument("bug_921.pdf")); |
| FPDF_PAGE page = LoadPage(0); |
| ASSERT_TRUE(page); |
| |
| FPDF_TEXTPAGE textpage = FPDFText_LoadPage(page); |
| ASSERT_TRUE(textpage); |
| |
| static constexpr unsigned int kData[] = { |
| 1095, 1077, 1083, 1086, 1074, 1077, 1095, 1077, 1089, 1082, 1086, 1077, |
| 32, 1089, 1090, 1088, 1072, 1076, 1072, 1085, 1080, 1077, 46, 32}; |
| static constexpr int kStartIndex = 238; |
| |
| ASSERT_EQ(268, FPDFText_CountChars(textpage)); |
| for (size_t i = 0; i < FX_ArraySize(kData); ++i) |
| EXPECT_EQ(kData[i], FPDFText_GetUnicode(textpage, kStartIndex + i)); |
| |
| unsigned short buffer[FX_ArraySize(kData) + 1]; |
| memset(buffer, 0xbd, sizeof(buffer)); |
| int count = |
| FPDFText_GetText(textpage, kStartIndex, FX_ArraySize(kData), buffer); |
| ASSERT_GT(count, 0); |
| ASSERT_EQ(FX_ArraySize(kData) + 1, static_cast<size_t>(count)); |
| for (size_t i = 0; i < FX_ArraySize(kData); ++i) |
| EXPECT_EQ(kData[i], buffer[i]); |
| EXPECT_EQ(0, buffer[FX_ArraySize(kData)]); |
| |
| FPDFText_ClosePage(textpage); |
| UnloadPage(page); |
| } |
| |
| TEST_F(FPDFTextEmbedderTest, GetTextWithHyphen) { |
| ASSERT_TRUE(OpenDocument("bug_781804.pdf")); |
| FPDF_PAGE page = LoadPage(0); |
| ASSERT_TRUE(page); |
| |
| FPDF_TEXTPAGE textpage = FPDFText_LoadPage(page); |
| ASSERT_TRUE(textpage); |
| |
| // Check that soft hyphens are not included |
| // Expecting 'Veritaserum', except there is a \uFFFE where the hyphen was in |
| // the original text. This is a weird thing that Adobe does, which we |
| // replicate. |
| constexpr unsigned short soft_expected[] = { |
| 0x0056, 0x0065, 0x0072, 0x0069, 0x0074, 0x0061, 0xfffe, |
| 0x0073, 0x0065, 0x0072, 0x0075, 0x006D, 0x0000}; |
| { |
| constexpr int count = FX_ArraySize(soft_expected) - 1; |
| unsigned short buffer[FX_ArraySize(soft_expected)]; |
| memset(buffer, 0, sizeof(buffer)); |
| |
| EXPECT_EQ(count + 1, FPDFText_GetText(textpage, 0, count, buffer)); |
| for (int i = 0; i < count; i++) |
| EXPECT_EQ(soft_expected[i], buffer[i]); |
| } |
| |
| // Check that hard hyphens are included |
| { |
| // There isn't the \0 in the actual doc, but there is a \r\n, so need to |
| // add 1 to get aligned. |
| constexpr size_t offset = FX_ArraySize(soft_expected) + 1; |
| // Expecting 'User-\r\ngenerated', the - is a unicode character, so cannnot |
| // store in a char[]. |
| constexpr unsigned short hard_expected[] = { |
| 0x0055, 0x0073, 0x0065, 0x0072, 0x2010, 0x000d, 0x000a, 0x0067, 0x0065, |
| 0x006e, 0x0065, 0x0072, 0x0061, 0x0074, 0x0065, 0x0064, 0x0000}; |
| constexpr int count = FX_ArraySize(hard_expected) - 1; |
| unsigned short buffer[FX_ArraySize(hard_expected)]; |
| |
| EXPECT_EQ(count + 1, FPDFText_GetText(textpage, offset, count, buffer)); |
| for (int i = 0; i < count; i++) |
| EXPECT_EQ(hard_expected[i], buffer[i]); |
| } |
| |
| FPDFText_ClosePage(textpage); |
| UnloadPage(page); |
| } |
| |
| TEST_F(FPDFTextEmbedderTest, bug_782596) { |
| // If there is a regression in this test, it will only fail under ASAN |
| ASSERT_TRUE(OpenDocument("bug_782596.pdf")); |
| FPDF_PAGE page = LoadPage(0); |
| ASSERT_TRUE(page); |
| FPDF_TEXTPAGE textpage = FPDFText_LoadPage(page); |
| ASSERT_TRUE(textpage); |
| FPDFText_ClosePage(textpage); |
| UnloadPage(page); |
| } |
| |
| TEST_F(FPDFTextEmbedderTest, ControlCharacters) { |
| ASSERT_TRUE(OpenDocument("control_characters.pdf")); |
| FPDF_PAGE page = LoadPage(0); |
| ASSERT_TRUE(page); |
| |
| FPDF_TEXTPAGE textpage = FPDFText_LoadPage(page); |
| ASSERT_TRUE(textpage); |
| |
| // Should not include the control characters in the output |
| unsigned short buffer[128]; |
| memset(buffer, 0xbd, sizeof(buffer)); |
| int num_chars = FPDFText_GetText(textpage, 0, 128, buffer); |
| ASSERT_EQ(kHelloGoodbyeTextSize, num_chars); |
| EXPECT_TRUE( |
| check_unsigned_shorts(kHelloGoodbyeText, buffer, kHelloGoodbyeTextSize)); |
| |
| // Attempting to get a chunk of text after the control characters |
| static const char expected_substring[] = "Goodbye, world!"; |
| // Offset is the length of 'Hello, world!\r\n' + 2 control characters in the |
| // original stream |
| static const int offset = 17; |
| memset(buffer, 0xbd, sizeof(buffer)); |
| num_chars = FPDFText_GetText(textpage, offset, 128, buffer); |
| |
| ASSERT_GE(num_chars, 0); |
| EXPECT_EQ(sizeof(expected_substring), static_cast<size_t>(num_chars)); |
| EXPECT_TRUE(check_unsigned_shorts(expected_substring, buffer, |
| sizeof(expected_substring))); |
| |
| FPDFText_ClosePage(textpage); |
| UnloadPage(page); |
| } |
| |
| // Testing that hyphen makers (0x0002) are replacing hard hyphens when |
| // the word contains non-ASCII characters. |
| TEST_F(FPDFTextEmbedderTest, bug_1029) { |
| ASSERT_TRUE(OpenDocument("bug_1029.pdf")); |
| FPDF_PAGE page = LoadPage(0); |
| ASSERT_TRUE(page); |
| |
| FPDF_TEXTPAGE textpage = FPDFText_LoadPage(page); |
| ASSERT_TRUE(textpage); |
| |
| constexpr int page_range_offset = 171; |
| constexpr int page_range_length = 56; |
| |
| // This text is: |
| // 'METADATA table. When the split has committed, it noti' followed |
| // by a 'soft hyphen' (0x0002) and then 'fi'. |
| // |
| // The original text has a fi ligature, but that is broken up into |
| // two characters when the PDF is processed. |
| constexpr unsigned int expected[] = { |
| 0x004d, 0x0045, 0x0054, 0x0041, 0x0044, 0x0041, 0x0054, 0x0041, |
| 0x0020, 0x0074, 0x0061, 0x0062, 0x006c, 0x0065, 0x002e, 0x0020, |
| 0x0057, 0x0068, 0x0065, 0x006e, 0x0020, 0x0074, 0x0068, 0x0065, |
| 0x0020, 0x0073, 0x0070, 0x006c, 0x0069, 0x0074, 0x0020, 0x0068, |
| 0x0061, 0x0073, 0x0020, 0x0063, 0x006f, 0x006d, 0x006d, 0x0069, |
| 0x0074, 0x0074, 0x0065, 0x0064, 0x002c, 0x0020, 0x0069, 0x0074, |
| 0x0020, 0x006e, 0x006f, 0x0074, 0x0069, 0x0002, 0x0066, 0x0069}; |
| static_assert(page_range_length == FX_ArraySize(expected), |
| "Expected should be the same size as the range being " |
| "extracted from page."); |
| EXPECT_LT(page_range_offset + page_range_length, |
| FPDFText_CountChars(textpage)); |
| |
| for (int i = 0; i < page_range_length; ++i) { |
| EXPECT_EQ(expected[i], |
| FPDFText_GetUnicode(textpage, page_range_offset + i)); |
| } |
| |
| FPDFText_ClosePage(textpage); |
| UnloadPage(page); |
| } |
| |
| TEST_F(FPDFTextEmbedderTest, CountRects) { |
| ASSERT_TRUE(OpenDocument("hello_world.pdf")); |
| FPDF_PAGE page = LoadPage(0); |
| ASSERT_TRUE(page); |
| |
| FPDF_TEXTPAGE textpage = FPDFText_LoadPage(page); |
| ASSERT_TRUE(textpage); |
| |
| // Sanity check hello_world.pdf. |
| // |num_chars| check includes the terminating NUL that is provided. |
| { |
| unsigned short buffer[128]; |
| int num_chars = FPDFText_GetText(textpage, 0, 128, buffer); |
| ASSERT_EQ(kHelloGoodbyeTextSize, num_chars); |
| EXPECT_TRUE(check_unsigned_shorts(kHelloGoodbyeText, buffer, |
| kHelloGoodbyeTextSize)); |
| } |
| |
| // Now test FPDFText_CountRects(). |
| static const int kHelloWorldEnd = strlen("Hello, world!"); |
| static const int kGoodbyeWorldStart = kHelloWorldEnd + 2; // "\r\n" |
| for (int start = 0; start < kHelloWorldEnd; ++start) { |
| // Always grab some part of "hello world" and some part of "goodbye world" |
| // Since -1 means "all". |
| EXPECT_EQ(2, FPDFText_CountRects(textpage, start, -1)); |
| |
| // No characters always means 0 rects. |
| EXPECT_EQ(0, FPDFText_CountRects(textpage, start, 0)); |
| |
| // 1 character stays within "hello world" |
| EXPECT_EQ(1, FPDFText_CountRects(textpage, start, 1)); |
| |
| // When |start| is 0, Having |kGoodbyeWorldStart| char count does not reach |
| // "goodbye world". |
| int expected_value = start ? 2 : 1; |
| EXPECT_EQ(expected_value, |
| FPDFText_CountRects(textpage, start, kGoodbyeWorldStart)); |
| |
| // Extremely large character count will always return 2 rects because |
| // |start| starts inside "hello world". |
| EXPECT_EQ(2, FPDFText_CountRects(textpage, start, 500)); |
| } |
| |
| // Now test negative counts. |
| for (int start = 0; start < kHelloWorldEnd; ++start) { |
| EXPECT_EQ(2, FPDFText_CountRects(textpage, start, -100)); |
| EXPECT_EQ(2, FPDFText_CountRects(textpage, start, -2)); |
| } |
| |
| // Now test larger start values. |
| const int kExpectedLength = strlen(kHelloGoodbyeText); |
| for (int start = kGoodbyeWorldStart + 1; start < kExpectedLength; ++start) { |
| EXPECT_EQ(1, FPDFText_CountRects(textpage, start, -1)); |
| EXPECT_EQ(0, FPDFText_CountRects(textpage, start, 0)); |
| EXPECT_EQ(1, FPDFText_CountRects(textpage, start, 1)); |
| EXPECT_EQ(1, FPDFText_CountRects(textpage, start, 2)); |
| EXPECT_EQ(1, FPDFText_CountRects(textpage, start, 500)); |
| } |
| |
| // Now test start values that starts beyond the end of the text. |
| for (int start = kExpectedLength; start < 100; ++start) { |
| EXPECT_EQ(0, FPDFText_CountRects(textpage, start, -1)); |
| EXPECT_EQ(0, FPDFText_CountRects(textpage, start, 0)); |
| EXPECT_EQ(0, FPDFText_CountRects(textpage, start, 1)); |
| EXPECT_EQ(0, FPDFText_CountRects(textpage, start, 2)); |
| EXPECT_EQ(0, FPDFText_CountRects(textpage, start, 500)); |
| } |
| |
| FPDFText_ClosePage(textpage); |
| UnloadPage(page); |
| } |
| |
| TEST_F(FPDFTextEmbedderTest, GetText) { |
| ASSERT_TRUE(OpenDocument("hello_world.pdf")); |
| FPDF_PAGE page = LoadPage(0); |
| ASSERT_TRUE(page); |
| |
| FPDF_TEXTPAGE text_page = FPDFText_LoadPage(page); |
| ASSERT_TRUE(text_page); |
| |
| EXPECT_EQ(2, FPDFPage_CountObjects(page)); |
| FPDF_PAGEOBJECT text_object = FPDFPage_GetObject(page, 0); |
| ASSERT_TRUE(text_object); |
| |
| // Positive testing. |
| constexpr char kHelloText[] = "Hello, world!"; |
| // Return value includes the terminating NUL that is provided. |
| constexpr unsigned long kHelloUTF16Size = FX_ArraySize(kHelloText) * 2; |
| constexpr wchar_t kHelloWideText[] = L"Hello, world!"; |
| unsigned long size = FPDFTextObj_GetText(text_object, text_page, nullptr, 0); |
| ASSERT_EQ(kHelloUTF16Size, size); |
| |
| std::vector<unsigned short> buffer(size); |
| ASSERT_EQ(size, |
| FPDFTextObj_GetText(text_object, text_page, buffer.data(), size)); |
| ASSERT_EQ(kHelloWideText, GetPlatformWString(buffer.data())); |
| |
| // Negative testing. |
| ASSERT_EQ(0U, FPDFTextObj_GetText(nullptr, text_page, nullptr, 0)); |
| ASSERT_EQ(0U, FPDFTextObj_GetText(text_object, nullptr, nullptr, 0)); |
| ASSERT_EQ(0U, FPDFTextObj_GetText(nullptr, nullptr, nullptr, 0)); |
| |
| // Buffer is too small, ensure it's not modified. |
| buffer.resize(2); |
| buffer[0] = 'x'; |
| buffer[1] = '\0'; |
| size = |
| FPDFTextObj_GetText(text_object, text_page, buffer.data(), buffer.size()); |
| ASSERT_EQ(kHelloUTF16Size, size); |
| ASSERT_EQ('x', buffer[0]); |
| ASSERT_EQ('\0', buffer[1]); |
| |
| FPDFText_ClosePage(text_page); |
| UnloadPage(page); |
| } |
| |
| TEST_F(FPDFTextEmbedderTest, CroppedText) { |
| static constexpr int kPageCount = 4; |
| static constexpr FS_RECTF kBoxes[kPageCount] = { |
| {50.0f, 150.0f, 150.0f, 50.0f}, |
| {50.0f, 150.0f, 150.0f, 50.0f}, |
| {60.0f, 150.0f, 150.0f, 60.0f}, |
| {60.0f, 150.0f, 150.0f, 60.0f}, |
| }; |
| static constexpr const char* kExpectedText[kPageCount] = { |
| " world!\r\ndbye, world!", |
| " world!\r\ndbye, world!", |
| "bye, world!", |
| "bye, world!", |
| }; |
| |
| ASSERT_TRUE(OpenDocument("cropped_text.pdf")); |
| ASSERT_EQ(kPageCount, FPDF_GetPageCount(document())); |
| |
| for (int i = 0; i < kPageCount; ++i) { |
| FPDF_PAGE page = LoadPage(i); |
| ASSERT_TRUE(page); |
| |
| FS_RECTF box; |
| EXPECT_TRUE(FPDF_GetPageBoundingBox(page, &box)); |
| EXPECT_EQ(kBoxes[i].left, box.left); |
| EXPECT_EQ(kBoxes[i].top, box.top); |
| EXPECT_EQ(kBoxes[i].right, box.right); |
| EXPECT_EQ(kBoxes[i].bottom, box.bottom); |
| |
| { |
| ScopedFPDFTextPage textpage(FPDFText_LoadPage(page)); |
| ASSERT_TRUE(textpage); |
| |
| unsigned short buffer[128]; |
| memset(buffer, 0xbd, sizeof(buffer)); |
| int num_chars = FPDFText_GetText(textpage.get(), 0, 128, buffer); |
| ASSERT_EQ(kHelloGoodbyeTextSize, num_chars); |
| EXPECT_TRUE(check_unsigned_shorts(kHelloGoodbyeText, buffer, |
| kHelloGoodbyeTextSize)); |
| |
| int expected_char_count = strlen(kExpectedText[i]); |
| ASSERT_EQ(expected_char_count, |
| FPDFText_GetBoundedText(textpage.get(), box.left, box.top, |
| box.right, box.bottom, nullptr, 0)); |
| |
| memset(buffer, 0xbd, sizeof(buffer)); |
| ASSERT_EQ(expected_char_count + 1, |
| FPDFText_GetBoundedText(textpage.get(), box.left, box.top, |
| box.right, box.bottom, buffer, 128)); |
| EXPECT_TRUE( |
| check_unsigned_shorts(kExpectedText[i], buffer, expected_char_count)); |
| } |
| |
| UnloadPage(page); |
| } |
| } |
| |
| TEST_F(FPDFTextEmbedderTest, Bug_1139) { |
| ASSERT_TRUE(OpenDocument("bug_1139.pdf")); |
| FPDF_PAGE page = LoadPage(0); |
| ASSERT_TRUE(page); |
| |
| FPDF_TEXTPAGE text_page = FPDFText_LoadPage(page); |
| ASSERT_TRUE(text_page); |
| |
| // -1 for CountChars not including the \0, but +1 for the extra control |
| // character. |
| EXPECT_EQ(kHelloGoodbyeTextSize, FPDFText_CountChars(text_page)); |
| |
| // There is an extra control character at the beginning of the string, but it |
| // should not appear in the output nor prevent extracting the text. |
| unsigned short buffer[128]; |
| int num_chars = FPDFText_GetText(text_page, 0, 128, buffer); |
| ASSERT_EQ(kHelloGoodbyeTextSize, num_chars); |
| EXPECT_TRUE( |
| check_unsigned_shorts(kHelloGoodbyeText, buffer, kHelloGoodbyeTextSize)); |
| FPDFText_ClosePage(text_page); |
| UnloadPage(page); |
| } |
| |
| TEST_F(FPDFTextEmbedderTest, GetCharAngle) { |
| ASSERT_TRUE(OpenDocument("rotated_text.pdf")); |
| FPDF_PAGE page = LoadPage(0); |
| ASSERT_TRUE(page); |
| |
| FPDF_TEXTPAGE text_page = FPDFText_LoadPage(page); |
| ASSERT_TRUE(text_page); |
| |
| static constexpr int kSubstringsSize[] = {FX_ArraySize("Hello,"), |
| FX_ArraySize(" world!\r\n"), |
| FX_ArraySize("Goodbye,")}; |
| |
| // -1 for CountChars not including the \0, but +1 for the extra control |
| // character. |
| EXPECT_EQ(kHelloGoodbyeTextSize, FPDFText_CountChars(text_page)); |
| |
| EXPECT_EQ(-1, FPDFText_GetCharAngle(nullptr, 0)); |
| EXPECT_EQ(-1, FPDFText_GetCharAngle(text_page, -1)); |
| EXPECT_EQ(-1, FPDFText_GetCharAngle(text_page, kHelloGoodbyeTextSize + 1)); |
| |
| // Test GetCharAngle for every quadrant |
| EXPECT_NEAR(FX_PI / 4.0, FPDFText_GetCharAngle(text_page, 0), 0.001); |
| EXPECT_NEAR(3 * FX_PI / 4.0, |
| FPDFText_GetCharAngle(text_page, kSubstringsSize[0]), 0.001); |
| EXPECT_NEAR( |
| 5 * FX_PI / 4.0, |
| FPDFText_GetCharAngle(text_page, kSubstringsSize[0] + kSubstringsSize[1]), |
| 0.001); |
| EXPECT_NEAR( |
| 7 * FX_PI / 4.0, |
| FPDFText_GetCharAngle(text_page, kSubstringsSize[0] + kSubstringsSize[1] + |
| kSubstringsSize[2]), |
| 0.001); |
| |
| FPDFText_ClosePage(text_page); |
| UnloadPage(page); |
| } |