Merge to XFA: Implement FPDFAction_GetFilePath().

The API is the same as the Foxit version, except the encoding is
specified as UTF-8 instead of local encoding.

Also remove CPDF_LWinParam since it's unused.

BUG=chromium:517713
R=tsepez@chromium.org

Review URL: https://codereview.chromium.org/1335373002 .

(cherry picked from commit 0b3c8f742613da294f812e2f6e908f4026499f96)
(cherry picked from commit a9d4bc541179ec0436adc4b2e18b7fdecc5952dc)
(cherry picked from commit 4ffd89ed556e32a6527d0e88952fe20ec1e2f362)

Review URL: https://codereview.chromium.org/1345953002 .

1 files changed, 25 insertions, 0 deletions

diff --git a/fpdfsdk/src/fpdfdoc_embeddertest.cpp b/fpdfsdk/src/fpdfdoc_embeddertest.cpp
index b263fafe16..8b1c4fb3e8 100644
--- a/fpdfsdk/src/fpdfdoc_embeddertest.cpp
+++ b/fpdfsdk/src/fpdfdoc_embeddertest.cpp
@@ -35,3 +35,28 @@ TEST_F(FPDFDocEmbeddertest, DestGetPageIndex) {
   EXPECT_NE(nullptr, dest);
   EXPECT_EQ(0U, FPDFDest_GetPageIndex(document(), dest));
 }
+
+TEST_F(FPDFDocEmbeddertest, ActionGetFilePath) {
+  EXPECT_TRUE(OpenDocument("testing/resources/launch_action.pdf"));
+
+  FPDF_PAGE page = FPDF_LoadPage(document(), 0);
+  ASSERT_TRUE(page);
+
+  // The target action is nearly the size of the whole page.
+  FPDF_LINK link = FPDFLink_GetLinkAtPoint(page, 100, 100);
+  ASSERT_TRUE(link);
+
+  FPDF_ACTION action = FPDFLink_GetAction(link);
+  ASSERT_TRUE(action);
+
+  const char kExpectedResult[] = "test.pdf";
+  const unsigned long kExpectedLength = sizeof(kExpectedResult);
+  unsigned long bufsize = FPDFAction_GetFilePath(action, nullptr, 0);
+  ASSERT_EQ(kExpectedLength, bufsize);
+
+  char buf[kExpectedLength];
+  EXPECT_EQ(bufsize, FPDFAction_GetFilePath(action, buf, bufsize));
+  EXPECT_EQ(std::string(kExpectedResult), std::string(buf));
+
+  FPDF_ClosePage(page);
+}