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-rw-r--r--fpdfsdk/src/fpdftext_embeddertest.cpp346
1 files changed, 346 insertions, 0 deletions
diff --git a/fpdfsdk/src/fpdftext_embeddertest.cpp b/fpdfsdk/src/fpdftext_embeddertest.cpp
index 3198fe0f86..1457832658 100644
--- a/fpdfsdk/src/fpdftext_embeddertest.cpp
+++ b/fpdfsdk/src/fpdftext_embeddertest.cpp
@@ -7,17 +7,363 @@
#include "../../fpdfsdk/include/fpdftext.h"
#include "testing/gtest/include/gtest/gtest.h"
+namespace {
+
+static 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("testing/resources/hello_world.pdf"));
+ FPDF_FORMHANDLE form_handle = SetFormFillEnvironment();
+ FPDF_PAGE page = LoadPage(0, form_handle);
+ EXPECT_NE(nullptr, page);
+
+ FPDF_TEXTPAGE textpage = FPDFText_LoadPage(page);
+ EXPECT_NE(nullptr, textpage);
+
+ 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.
+ EXPECT_EQ(sizeof(expected), FPDFText_GetText(textpage, 0, 128, fixed_buffer));
+ 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(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);
+ ClearFormFillEnvironment(form_handle);
+}
+
+TEST_F(FPDFTextEmbeddertest, TextSearch) {
+ EXPECT_TRUE(OpenDocument("testing/resources/hello_world.pdf"));
+ FPDF_FORMHANDLE form_handle = SetFormFillEnvironment();
+ FPDF_PAGE page = LoadPage(0, form_handle);
+ EXPECT_NE(nullptr, page);
+
+ FPDF_TEXTPAGE textpage = FPDFText_LoadPage(page);
+ EXPECT_NE(nullptr, textpage);
+
+ // Avoid issues with system wchar_t width vs. FPDF_WideString.
+ const unsigned short nope[] = { 'n', 'o', 'p', 'e', '\0' };
+ const unsigned short world[] = { 'w', 'o', 'r', 'l', 'd', '\0' };
+ const unsigned short world_caps[] = { 'W', 'O', 'R', 'L', 'D', '\0' };
+ const unsigned short world_substr[] = { 'o', 'r', 'l', 'd', '\0' };
+
+ // No occurences of "nope" in test page.
+ FPDF_SCHHANDLE search = FPDFText_FindStart(textpage, nope, 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, 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, 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, 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, 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, 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, FPDF_MATCHWHOLEWORD, 0);
+ EXPECT_FALSE(FPDFText_FindNext(search));
+ // TODO(tsepez): investigate strange index/count values in this state.
+ FPDFText_FindClose(search);
+
+ FPDFText_ClosePage(textpage);
+ ClearFormFillEnvironment(form_handle);
+}
+
// Test that the page has characters despite a bad stream length.
TEST_F(FPDFTextEmbeddertest, StreamLengthPastEndOfFile) {
EXPECT_TRUE(OpenDocument("testing/resources/bug_57.pdf"));
FPDF_FORMHANDLE form_handle = SetFormFillEnvironment();
FPDF_PAGE page = LoadPage(0, form_handle);
EXPECT_NE(nullptr, page);
+
FPDF_TEXTPAGE textpage = FPDFText_LoadPage(page);
EXPECT_NE(nullptr, textpage);
EXPECT_EQ(13, FPDFText_CountChars(textpage));
+
+ FPDFText_ClosePage(textpage);
+ ClearFormFillEnvironment(form_handle);
+}
+
+TEST_F(FPDFTextEmbeddertest, WebLinks) {
+ EXPECT_TRUE(OpenDocument("testing/resources/weblinks.pdf"));
+ FPDF_FORMHANDLE form_handle = SetFormFillEnvironment();
+ FPDF_PAGE page = LoadPage(0, form_handle);
+ 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));
+
+ 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);
ClearFormFillEnvironment(form_handle);
}