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Diffstat (limited to 'fpdfsdk/fpdftext_embeddertest.cpp')
| -rw-r--r-- | fpdfsdk/fpdftext_embeddertest.cpp | 391 |
1 files changed, 391 insertions, 0 deletions
diff --git a/fpdfsdk/fpdftext_embeddertest.cpp b/fpdfsdk/fpdftext_embeddertest.cpp new file mode 100644 index 0000000000..3eaa5815d9 --- /dev/null +++ b/fpdfsdk/fpdftext_embeddertest.cpp @@ -0,0 +1,391 @@ +// 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 "core/include/fxcrt/fx_basic.h" +#include "public/fpdf_text.h" +#include "public/fpdfview.h" +#include "testing/embedder_test.h" +#include "testing/gtest/include/gtest/gtest.h" +#include "testing/test_support.h" + +namespace { + +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) { + EXPECT_TRUE(OpenDocument("hello_world.pdf")); + FPDF_PAGE page = LoadPage(0); + EXPECT_NE(nullptr, page); + + FPDF_TEXTPAGE textpage = FPDFText_LoadPage(page); + EXPECT_NE(nullptr, textpage); + + static const char expected[] = "Hello, world!\r\nGoodbye, world!"; + unsigned short fixed_buffer[128]; + memset(fixed_buffer, 0xbd, sizeof(fixed_buffer)); + + // Check includes the terminating NUL that is provided. + int num_chars = FPDFText_GetText(textpage, 0, 128, fixed_buffer); + ASSERT_GE(num_chars, 0); + EXPECT_EQ(sizeof(expected), static_cast<size_t>(num_chars)); + EXPECT_TRUE(check_unsigned_shorts(expected, fixed_buffer, sizeof(expected))); + + // Count does not include the terminating NUL in the string literal. + EXPECT_EQ(sizeof(expected) - 1, FPDFText_CountChars(textpage)); + for (size_t i = 0; i < sizeof(expected) - 1; ++i) { + EXPECT_EQ(static_cast<unsigned int>(expected[i]), + FPDFText_GetUnicode(textpage, i)) + << " at " << i; + } + + 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; + 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); + + 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, sizeof(expected) - 1)); + + left = 0.0; + right = 0.0; + bottom = 0.0; + top = 0.0; + 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; + 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; + 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, 0, 0)); + + // Extract starting at character 4 as above. + memset(fixed_buffer, 0xbd, sizeof(fixed_buffer)); + EXPECT_EQ(1, FPDFText_GetBoundedText(textpage, 41.0, 56.0, 82.0, 48.0, + fixed_buffer, 1)); + EXPECT_TRUE(check_unsigned_shorts(expected + 4, fixed_buffer, 1)); + EXPECT_EQ(0xbdbd, fixed_buffer[1]); + + memset(fixed_buffer, 0xbd, sizeof(fixed_buffer)); + EXPECT_EQ(9, FPDFText_GetBoundedText(textpage, 41.0, 56.0, 82.0, 48.0, + fixed_buffer, 9)); + EXPECT_TRUE(check_unsigned_shorts(expected + 4, fixed_buffer, 9)); + EXPECT_EQ(0xbdbd, fixed_buffer[9]); + + memset(fixed_buffer, 0xbd, sizeof(fixed_buffer)); + EXPECT_EQ(10, FPDFText_GetBoundedText(textpage, 41.0, 56.0, 82.0, 48.0, + fixed_buffer, 128)); + EXPECT_TRUE(check_unsigned_shorts(expected + 4, fixed_buffer, 9)); + EXPECT_EQ(0u, fixed_buffer[9]); + EXPECT_EQ(0xbdbd, fixed_buffer[10]); + + FPDFText_ClosePage(textpage); + UnloadPage(page); +} + +TEST_F(FPDFTextEmbeddertest, TextSearch) { + EXPECT_TRUE(OpenDocument("hello_world.pdf")); + FPDF_PAGE page = LoadPage(0); + EXPECT_NE(nullptr, page); + + FPDF_TEXTPAGE textpage = FPDFText_LoadPage(page); + EXPECT_NE(nullptr, textpage); + + std::unique_ptr<unsigned short, pdfium::FreeDeleter> nope = + GetFPDFWideString(L"nope"); + std::unique_ptr<unsigned short, pdfium::FreeDeleter> world = + GetFPDFWideString(L"world"); + std::unique_ptr<unsigned short, pdfium::FreeDeleter> world_caps = + GetFPDFWideString(L"WORLD"); + std::unique_ptr<unsigned short, pdfium::FreeDeleter> world_substr = + GetFPDFWideString(L"orld"); + + // No occurences of "nope" in test page. + FPDF_SCHHANDLE search = FPDFText_FindStart(textpage, nope.get(), 0, 0); + EXPECT_NE(nullptr, search); + EXPECT_EQ(0, FPDFText_GetSchResultIndex(search)); + EXPECT_EQ(0, FPDFText_GetSchCount(search)); + + // Advancing finds nothing. + EXPECT_FALSE(FPDFText_FindNext(search)); + EXPECT_EQ(0, FPDFText_GetSchResultIndex(search)); + EXPECT_EQ(0, FPDFText_GetSchCount(search)); + + // Retreating finds nothing. + EXPECT_FALSE(FPDFText_FindPrev(search)); + EXPECT_EQ(0, FPDFText_GetSchResultIndex(search)); + EXPECT_EQ(0, FPDFText_GetSchCount(search)); + FPDFText_FindClose(search); + + // Two occurences of "world" in test page. + search = FPDFText_FindStart(textpage, world.get(), 0, 2); + EXPECT_NE(nullptr, search); + + // Remains not found until advanced. + EXPECT_EQ(0, FPDFText_GetSchResultIndex(search)); + EXPECT_EQ(0, FPDFText_GetSchCount(search)); + + // First occurence of "world" in this test page. + EXPECT_TRUE(FPDFText_FindNext(search)); + EXPECT_EQ(7, FPDFText_GetSchResultIndex(search)); + EXPECT_EQ(5, FPDFText_GetSchCount(search)); + + // Last occurence of "world" in this test page. + EXPECT_TRUE(FPDFText_FindNext(search)); + EXPECT_EQ(24, FPDFText_GetSchResultIndex(search)); + EXPECT_EQ(5, FPDFText_GetSchCount(search)); + + // Found position unchanged when fails to advance. + EXPECT_FALSE(FPDFText_FindNext(search)); + EXPECT_EQ(24, FPDFText_GetSchResultIndex(search)); + EXPECT_EQ(5, FPDFText_GetSchCount(search)); + + // Back to first occurence. + EXPECT_TRUE(FPDFText_FindPrev(search)); + EXPECT_EQ(7, FPDFText_GetSchResultIndex(search)); + EXPECT_EQ(5, FPDFText_GetSchCount(search)); + + // Found position unchanged when fails to retreat. + EXPECT_FALSE(FPDFText_FindPrev(search)); + EXPECT_EQ(7, FPDFText_GetSchResultIndex(search)); + EXPECT_EQ(5, FPDFText_GetSchCount(search)); + FPDFText_FindClose(search); + + // Exact search unaffected by case sensitiity and whole word flags. + search = FPDFText_FindStart(textpage, world.get(), + FPDF_MATCHCASE | FPDF_MATCHWHOLEWORD, 0); + EXPECT_NE(nullptr, search); + EXPECT_TRUE(FPDFText_FindNext(search)); + EXPECT_EQ(7, FPDFText_GetSchResultIndex(search)); + EXPECT_EQ(5, FPDFText_GetSchCount(search)); + FPDFText_FindClose(search); + + // Default is case-insensitive, so matching agaist caps works. + search = FPDFText_FindStart(textpage, world_caps.get(), 0, 0); + EXPECT_NE(nullptr, search); + EXPECT_TRUE(FPDFText_FindNext(search)); + EXPECT_EQ(7, FPDFText_GetSchResultIndex(search)); + EXPECT_EQ(5, FPDFText_GetSchCount(search)); + FPDFText_FindClose(search); + + // But can be made case sensitive, in which case this fails. + search = FPDFText_FindStart(textpage, world_caps.get(), FPDF_MATCHCASE, 0); + EXPECT_FALSE(FPDFText_FindNext(search)); + EXPECT_EQ(0, FPDFText_GetSchResultIndex(search)); + EXPECT_EQ(0, FPDFText_GetSchCount(search)); + FPDFText_FindClose(search); + + // Default is match anywhere within word, so matching substirng works. + search = FPDFText_FindStart(textpage, world_substr.get(), 0, 0); + EXPECT_TRUE(FPDFText_FindNext(search)); + EXPECT_EQ(8, FPDFText_GetSchResultIndex(search)); + EXPECT_EQ(4, FPDFText_GetSchCount(search)); + FPDFText_FindClose(search); + + // But can be made to mach word boundaries, in which case this fails. + search = + FPDFText_FindStart(textpage, world_substr.get(), FPDF_MATCHWHOLEWORD, 0); + EXPECT_FALSE(FPDFText_FindNext(search)); + // TODO(tsepez): investigate strange index/count values in this state. + FPDFText_FindClose(search); + + FPDFText_ClosePage(textpage); + UnloadPage(page); +} + +// Test that the page has characters despite a bad stream length. +TEST_F(FPDFTextEmbeddertest, StreamLengthPastEndOfFile) { + EXPECT_TRUE(OpenDocument("bug_57.pdf")); + FPDF_PAGE page = LoadPage(0); + EXPECT_NE(nullptr, page); + + FPDF_TEXTPAGE textpage = FPDFText_LoadPage(page); + EXPECT_NE(nullptr, textpage); + EXPECT_EQ(13, FPDFText_CountChars(textpage)); + + FPDFText_ClosePage(textpage); + UnloadPage(page); +} + +TEST_F(FPDFTextEmbeddertest, WebLinks) { + EXPECT_TRUE(OpenDocument("weblinks.pdf")); + FPDF_PAGE page = LoadPage(0); + EXPECT_NE(nullptr, page); + + FPDF_TEXTPAGE textpage = FPDFText_LoadPage(page); + EXPECT_NE(nullptr, textpage); + + FPDF_PAGELINK pagelink = FPDFLink_LoadWebLinks(textpage); + EXPECT_NE(nullptr, pagelink); + + // Page contains two HTTP-style URLs. + EXPECT_EQ(2, FPDFLink_CountWebLinks(pagelink)); + + // Only a terminating NUL required for bogus links. + EXPECT_EQ(1, FPDFLink_GetURL(pagelink, 2, nullptr, 0)); + EXPECT_EQ(1, FPDFLink_GetURL(pagelink, 1400, nullptr, 0)); + EXPECT_EQ(1, FPDFLink_GetURL(pagelink, -1, nullptr, 0)); + + // 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"; + unsigned short fixed_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(fixed_buffer, 0xbd, sizeof(fixed_buffer)); + EXPECT_EQ(1, FPDFLink_GetURL(pagelink, 0, fixed_buffer, 1)); + EXPECT_TRUE(check_unsigned_shorts(expected_url, fixed_buffer, 1)); + EXPECT_EQ(0xbdbd, fixed_buffer[1]); + + // Check buffer that doesn't have space for a terminating NUL. + memset(fixed_buffer, 0xbd, sizeof(fixed_buffer)); + EXPECT_EQ( + sizeof(expected_url) - 1, + FPDFLink_GetURL(pagelink, 0, fixed_buffer, sizeof(expected_url) - 1)); + EXPECT_TRUE(check_unsigned_shorts(expected_url, fixed_buffer, + sizeof(expected_url) - 1)); + EXPECT_EQ(0xbdbd, fixed_buffer[sizeof(expected_url) - 1]); + + // Retreive link with exactly-sized buffer. + memset(fixed_buffer, 0xbd, sizeof(fixed_buffer)); + EXPECT_EQ(sizeof(expected_url), + FPDFLink_GetURL(pagelink, 0, fixed_buffer, sizeof(expected_url))); + EXPECT_TRUE( + check_unsigned_shorts(expected_url, fixed_buffer, sizeof(expected_url))); + EXPECT_EQ(0u, fixed_buffer[sizeof(expected_url) - 1]); + EXPECT_EQ(0xbdbd, fixed_buffer[sizeof(expected_url)]); + + // Retreive link with ample-sized-buffer. + memset(fixed_buffer, 0xbd, sizeof(fixed_buffer)); + EXPECT_EQ(sizeof(expected_url), + FPDFLink_GetURL(pagelink, 0, fixed_buffer, 128)); + EXPECT_TRUE( + check_unsigned_shorts(expected_url, fixed_buffer, sizeof(expected_url))); + EXPECT_EQ(0u, fixed_buffer[sizeof(expected_url) - 1]); + EXPECT_EQ(0xbdbd, fixed_buffer[sizeof(expected_url)]); + + // 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; + 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; + 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; + 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, GetFontSize) { + EXPECT_TRUE(OpenDocument("hello_world.pdf")); + FPDF_PAGE page = LoadPage(0); + EXPECT_NE(nullptr, page); + + FPDF_TEXTPAGE textpage = FPDFText_LoadPage(page); + EXPECT_NE(nullptr, 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), count); + for (int i = 0; i < count; ++i) + EXPECT_EQ(kExpectedFontsSizes[i], FPDFText_GetFontSize(textpage, i)) << i; + + FPDFText_ClosePage(textpage); + UnloadPage(page); +} |