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android13/external/pdfium/fpdfsdk/fpdf_text_embeddertest.cpp

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// 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 = 1.0;
double right = 2.0;
double bottom = 3.0;
double top = 4.0;
EXPECT_FALSE(FPDFText_GetCharBox(nullptr, 4, &left, &right, &bottom, &top));
EXPECT_DOUBLE_EQ(1.0, left);
EXPECT_DOUBLE_EQ(2.0, right);
EXPECT_DOUBLE_EQ(3.0, bottom);
EXPECT_DOUBLE_EQ(4.0, top);
EXPECT_FALSE(FPDFText_GetCharBox(textpage, -1, &left, &right, &bottom, &top));
EXPECT_DOUBLE_EQ(1.0, left);
EXPECT_DOUBLE_EQ(2.0, right);
EXPECT_DOUBLE_EQ(3.0, bottom);
EXPECT_DOUBLE_EQ(4.0, top);
EXPECT_FALSE(FPDFText_GetCharBox(textpage, 55, &left, &right, &bottom, &top));
EXPECT_DOUBLE_EQ(1.0, left);
EXPECT_DOUBLE_EQ(2.0, right);
EXPECT_DOUBLE_EQ(3.0, bottom);
EXPECT_DOUBLE_EQ(4.0, top);
EXPECT_FALSE(
FPDFText_GetCharBox(textpage, 4, nullptr, &right, &bottom, &top));
EXPECT_FALSE(FPDFText_GetCharBox(textpage, 4, &left, nullptr, &bottom, &top));
EXPECT_FALSE(FPDFText_GetCharBox(textpage, 4, &left, &right, nullptr, &top));
EXPECT_FALSE(
FPDFText_GetCharBox(textpage, 4, &left, &right, &bottom, nullptr));
EXPECT_FALSE(
FPDFText_GetCharBox(textpage, 4, nullptr, nullptr, nullptr, nullptr));
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);
FS_RECTF rect = {4.0f, 1.0f, 3.0f, 2.0f};
EXPECT_FALSE(FPDFText_GetLooseCharBox(nullptr, 4, &rect));
EXPECT_FLOAT_EQ(4.0f, rect.left);
EXPECT_FLOAT_EQ(3.0f, rect.right);
EXPECT_FLOAT_EQ(2.0f, rect.bottom);
EXPECT_FLOAT_EQ(1.0f, rect.top);
EXPECT_FALSE(FPDFText_GetLooseCharBox(textpage, -1, &rect));
EXPECT_FLOAT_EQ(4.0f, rect.left);
EXPECT_FLOAT_EQ(3.0f, rect.right);
EXPECT_FLOAT_EQ(2.0f, rect.bottom);
EXPECT_FLOAT_EQ(1.0f, rect.top);
EXPECT_FALSE(FPDFText_GetLooseCharBox(textpage, 55, &rect));
EXPECT_FLOAT_EQ(4.0f, rect.left);
EXPECT_FLOAT_EQ(3.0f, rect.right);
EXPECT_FLOAT_EQ(2.0f, rect.bottom);
EXPECT_FLOAT_EQ(1.0f, rect.top);
EXPECT_FALSE(FPDFText_GetLooseCharBox(textpage, 4, nullptr));
EXPECT_TRUE(FPDFText_GetLooseCharBox(textpage, 4, &rect));
EXPECT_FLOAT_EQ(40.664001f, rect.left);
EXPECT_FLOAT_EQ(46.664001f, rect.right);
EXPECT_FLOAT_EQ(47.667271f, rect.bottom);
EXPECT_FLOAT_EQ(59.667271f, rect.top);
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, TextVertical) {
ASSERT_TRUE(OpenDocument("vertical_text.pdf"));
FPDF_PAGE page = LoadPage(0);
ASSERT_TRUE(page);
FPDF_TEXTPAGE textpage = FPDFText_LoadPage(page);
ASSERT_TRUE(textpage);
EXPECT_EQ(12.0, FPDFText_GetFontSize(textpage, 0));
double x = 0.0;
double y = 0.0;
EXPECT_TRUE(FPDFText_GetCharOrigin(textpage, 1, &x, &y));
EXPECT_NEAR(6.664, x, 0.001);
EXPECT_NEAR(171.508, y, 0.001);
EXPECT_TRUE(FPDFText_GetCharOrigin(textpage, 2, &x, &y));
EXPECT_NEAR(8.668, x, 0.001);
EXPECT_NEAR(160.492, y, 0.001);
FS_RECTF rect;
EXPECT_TRUE(FPDFText_GetLooseCharBox(textpage, 1, &rect));
EXPECT_NEAR(4, rect.left, 0.001);
EXPECT_NEAR(16, rect.right, 0.001);
EXPECT_NEAR(178.984, rect.bottom, 0.001);
EXPECT_NEAR(170.308, rect.top, 0.001);
EXPECT_TRUE(FPDFText_GetLooseCharBox(textpage, 2, &rect));
EXPECT_NEAR(4, rect.left, 0.001);
EXPECT_NEAR(16, rect.right, 0.001);
EXPECT_NEAR(170.308, rect.bottom, 0.001);
EXPECT_NEAR(159.292, rect.top, 0.001);
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, Bug_642) {
ASSERT_TRUE(OpenDocument("bug_642.pdf"));
FPDF_PAGE page = LoadPage(0);
ASSERT_TRUE(page);
{
ScopedFPDFTextPage text_page(FPDFText_LoadPage(page));
ASSERT_TRUE(text_page);
constexpr char kText[] = "ABCD";
constexpr size_t kTextSize = FX_ArraySize(kText);
// -1 for CountChars not including the \0
EXPECT_EQ(static_cast<int>(kTextSize) - 1,
FPDFText_CountChars(text_page.get()));
unsigned short buffer[kTextSize];
int num_chars =
FPDFText_GetText(text_page.get(), 0, FX_ArraySize(buffer) - 1, buffer);
ASSERT_EQ(static_cast<int>(kTextSize), num_chars);
EXPECT_TRUE(check_unsigned_shorts(kText, buffer, kTextSize));
}
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_FLOAT_EQ(-1.0f, FPDFText_GetCharAngle(nullptr, 0));
EXPECT_FLOAT_EQ(-1.0f, FPDFText_GetCharAngle(text_page, -1));
EXPECT_FLOAT_EQ(-1.0f,
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);
}
TEST_F(FPDFTextEmbedderTest, GetFontWeight) {
ASSERT_TRUE(OpenDocument("font_weight.pdf"));
FPDF_PAGE page = LoadPage(0);
ASSERT_TRUE(page);
FPDF_TEXTPAGE text_page = FPDFText_LoadPage(page);
ASSERT_TRUE(text_page);
EXPECT_EQ(2, FPDFText_CountChars(text_page));
EXPECT_EQ(-1, FPDFText_GetFontWeight(nullptr, 0));
EXPECT_EQ(-1, FPDFText_GetFontWeight(text_page, -1));
EXPECT_EQ(-1, FPDFText_GetFontWeight(text_page, 314));
// The font used for this text only specifies /StemV (80); the weight value
// that is returned should be calculated from that (80*5 == 400).
EXPECT_EQ(400, FPDFText_GetFontWeight(text_page, 0));
// Using a /StemV value of 82, the estimate comes out to 410, even though
// /FontWeight is 400.
// TODO(crbug.com/pdfium/1420): Fix this the return value here.
EXPECT_EQ(410, FPDFText_GetFontWeight(text_page, 1));
FPDFText_ClosePage(text_page);
UnloadPage(page);
}
TEST_F(FPDFTextEmbedderTest, GetTextRenderMode) {
EXPECT_TRUE(OpenDocument("text_render_mode.pdf"));
FPDF_PAGE page = LoadPage(0);
ASSERT_TRUE(page);
FPDF_TEXTPAGE text_page = FPDFText_LoadPage(page);
ASSERT_TRUE(text_page);
ASSERT_EQ(12, FPDFText_CountChars(text_page));
ASSERT_EQ(FPDF_TEXTRENDERMODE_UNKNOWN,
FPDFText_GetTextRenderMode(nullptr, 0));
ASSERT_EQ(FPDF_TEXTRENDERMODE_UNKNOWN,
FPDFText_GetTextRenderMode(text_page, -1));
ASSERT_EQ(FPDF_TEXTRENDERMODE_UNKNOWN,
FPDFText_GetTextRenderMode(text_page, 314));
ASSERT_EQ(FPDF_TEXTRENDERMODE_FILL, FPDFText_GetTextRenderMode(text_page, 0));
ASSERT_EQ(FPDF_TEXTRENDERMODE_STROKE,
FPDFText_GetTextRenderMode(text_page, 7));
FPDFText_ClosePage(text_page);
UnloadPage(page);
}
TEST_F(FPDFTextEmbedderTest, GetFillColor) {
ASSERT_TRUE(OpenDocument("text_color.pdf"));
FPDF_PAGE page = LoadPage(0);
ASSERT_TRUE(page);
FPDF_TEXTPAGE text_page = FPDFText_LoadPage(page);
ASSERT_TRUE(text_page);
ASSERT_EQ(1, FPDFText_CountChars(text_page));
ASSERT_FALSE(
FPDFText_GetFillColor(nullptr, 0, nullptr, nullptr, nullptr, nullptr));
ASSERT_FALSE(
FPDFText_GetFillColor(text_page, -1, nullptr, nullptr, nullptr, nullptr));
ASSERT_FALSE(FPDFText_GetFillColor(text_page, 314, nullptr, nullptr, nullptr,
nullptr));
ASSERT_FALSE(
FPDFText_GetFillColor(text_page, 0, nullptr, nullptr, nullptr, nullptr));
unsigned int r;
unsigned int g;
unsigned int b;
unsigned int a;
ASSERT_TRUE(FPDFText_GetFillColor(text_page, 0, &r, &g, &b, &a));
ASSERT_EQ(0xffu, r);
ASSERT_EQ(0u, g);
ASSERT_EQ(0u, b);
ASSERT_EQ(0xffu, a);
FPDFText_ClosePage(text_page);
UnloadPage(page);
}
TEST_F(FPDFTextEmbedderTest, GetStrokeColor) {
ASSERT_TRUE(OpenDocument("text_color.pdf"));
FPDF_PAGE page = LoadPage(0);
ASSERT_TRUE(page);
FPDF_TEXTPAGE text_page = FPDFText_LoadPage(page);
ASSERT_TRUE(text_page);
ASSERT_EQ(1, FPDFText_CountChars(text_page));
ASSERT_FALSE(
FPDFText_GetStrokeColor(nullptr, 0, nullptr, nullptr, nullptr, nullptr));
ASSERT_FALSE(FPDFText_GetStrokeColor(text_page, -1, nullptr, nullptr, nullptr,
nullptr));
ASSERT_FALSE(FPDFText_GetStrokeColor(text_page, 314, nullptr, nullptr,
nullptr, nullptr));
ASSERT_FALSE(FPDFText_GetStrokeColor(text_page, 0, nullptr, nullptr, nullptr,
nullptr));
unsigned int r;
unsigned int g;
unsigned int b;
unsigned int a;
ASSERT_TRUE(FPDFText_GetStrokeColor(text_page, 0, &r, &g, &b, &a));
ASSERT_EQ(0u, r);
ASSERT_EQ(0xffu, g);
ASSERT_EQ(0u, b);
ASSERT_EQ(0xffu, a);
FPDFText_ClosePage(text_page);
UnloadPage(page);
}
TEST_F(FPDFTextEmbedderTest, GetMatrix) {
constexpr char kExpectedText[] = "A1\r\nA2\r\nA3";
constexpr size_t kExpectedTextSize = FX_ArraySize(kExpectedText);
constexpr FS_MATRIX kExpectedMatrices[] = {
{12.0f, 0.0f, 0.0f, 10.0f, 66.0f, 90.0f},
{12.0f, 0.0f, 0.0f, 10.0f, 66.0f, 90.0f},
{1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f},
{1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f},
{12.0f, 0.0f, 0.0f, 10.0f, 38.0f, 60.0f},
{12.0f, 0.0f, 0.0f, 10.0f, 38.0f, 60.0f},
{1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f},
{1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f},
{1.0f, 0.0f, 0.0f, 0.833333, 60.0f, 130.0f},
{1.0f, 0.0f, 0.0f, 0.833333, 60.0f, 130.0f},
};
constexpr size_t kExpectedCount = FX_ArraySize(kExpectedMatrices);
static_assert(kExpectedCount + 1 == kExpectedTextSize,
"Bad expected matrix size");
// For a size 12 letter 'A'.
constexpr double kExpectedCharWidth = 8.436;
constexpr double kExpectedCharHeight = 6.77;
ASSERT_TRUE(OpenDocument("font_matrix.pdf"));
FPDF_PAGE page = LoadPage(0);
ASSERT_TRUE(page);
{
ScopedFPDFTextPage text_page(FPDFText_LoadPage(page));
ASSERT_TRUE(text_page);
ASSERT_EQ(static_cast<int>(kExpectedCount),
FPDFText_CountChars(text_page.get()));
{
// Check the characters.
unsigned short buffer[kExpectedTextSize];
ASSERT_EQ(static_cast<int>(kExpectedTextSize),
FPDFText_GetText(text_page.get(), 0, kExpectedCount, buffer));
EXPECT_TRUE(
check_unsigned_shorts(kExpectedText, buffer, kExpectedTextSize));
}
{
// Check the character box size.
double left;
double right;
double bottom;
double top;
ASSERT_TRUE(FPDFText_GetCharBox(text_page.get(), 0, &left, &right,
&bottom, &top));
EXPECT_NEAR(kExpectedCharWidth, right - left, 0.001);
EXPECT_NEAR(kExpectedCharHeight, top - bottom, 0.001);
ASSERT_TRUE(FPDFText_GetCharBox(text_page.get(), 4, &left, &right,
&bottom, &top));
EXPECT_NEAR(kExpectedCharWidth, right - left, 0.001);
EXPECT_NEAR(kExpectedCharHeight, top - bottom, 0.001);
ASSERT_TRUE(FPDFText_GetCharBox(text_page.get(), 8, &left, &right,
&bottom, &top));
EXPECT_NEAR(kExpectedCharWidth, right - left, 0.001);
EXPECT_NEAR(kExpectedCharHeight, top - bottom, 0.001);
}
// Check the character matrix.
FS_MATRIX matrix;
for (size_t i = 0; i < kExpectedCount; ++i) {
ASSERT_TRUE(FPDFText_GetMatrix(text_page.get(), i, &matrix)) << i;
EXPECT_FLOAT_EQ(kExpectedMatrices[i].a, matrix.a) << i;
EXPECT_FLOAT_EQ(kExpectedMatrices[i].b, matrix.b) << i;
EXPECT_FLOAT_EQ(kExpectedMatrices[i].c, matrix.c) << i;
EXPECT_FLOAT_EQ(kExpectedMatrices[i].d, matrix.d) << i;
EXPECT_FLOAT_EQ(kExpectedMatrices[i].e, matrix.e) << i;
EXPECT_FLOAT_EQ(kExpectedMatrices[i].f, matrix.f) << i;
}
// Check bad parameters.
EXPECT_FALSE(FPDFText_GetMatrix(nullptr, 0, &matrix));
EXPECT_FALSE(FPDFText_GetMatrix(text_page.get(), 10, &matrix));
EXPECT_FALSE(FPDFText_GetMatrix(text_page.get(), -1, &matrix));
EXPECT_FALSE(FPDFText_GetMatrix(text_page.get(), 0, nullptr));
}
UnloadPage(page);
}
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