Create API to set and get blob values from a mark dict.

The new functions are:
- FPDFPageObjMark_GetParamBlobValue
- FPDFPageObjMark_SetBlobParam

Bug: pdfium:1037
Change-Id: Ie04df04c64c6cf517a8cde182d7e9a38c3c78d1b
Reviewed-on: https://pdfium-review.googlesource.com/37570
Commit-Queue: Henrique Nakashima <hnakashima@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>

1 files changed, 15 insertions, 1 deletions

diff --git a/fpdfsdk/fpdf_edit_embeddertest.cpp b/fpdfsdk/fpdf_edit_embeddertest.cpp
index 800fc70076..e47f3db360 100644
--- a/fpdfsdk/fpdf_edit_embeddertest.cpp
+++ b/fpdfsdk/fpdf_edit_embeddertest.cpp
@@ -2175,11 +2175,17 @@ TEST_F(FPDFEditEmbeddertest, AddMarkedText) {
   // Add parameters:
   // - int "IntKey" : 42
   // - string "StringKey": "StringValue"
+  // - blob "BlobKey": "\x01\x02\x03\0BlobValue1\0\0\0BlobValue2\0"
+  constexpr const size_t kBlobLen = 28;
+  char kBlobValue[kBlobLen];
+  memcpy(kBlobValue, "\x01\x02\x03\0BlobValue1\0\0\0BlobValue2\0", kBlobLen);
   EXPECT_EQ(0, FPDFPageObjMark_CountParams(mark));
   EXPECT_TRUE(FPDFPageObjMark_SetIntParam(document(), mark, "IntKey", 42));
   EXPECT_TRUE(FPDFPageObjMark_SetStringParam(document(), mark, "StringKey",
                                              "StringValue"));
-  EXPECT_EQ(2, FPDFPageObjMark_CountParams(mark));
+  EXPECT_TRUE(FPDFPageObjMark_SetBlobParam(document(), mark, "BlobKey",
+                                           kBlobValue, kBlobLen));
+  EXPECT_EQ(3, FPDFPageObjMark_CountParams(mark));
 
   // Check the two parameters can be retrieved.
   EXPECT_EQ(FPDF_OBJECT_NUMBER,
@@ -2197,6 +2203,14 @@ TEST_F(FPDFEditEmbeddertest, AddMarkedText) {
   name = GetPlatformWString(reinterpret_cast<unsigned short*>(buffer));
   EXPECT_EQ(L"StringValue", name);
 
+  EXPECT_EQ(FPDF_OBJECT_STRING,
+            FPDFPageObjMark_GetParamValueType(mark, "BlobKey"));
+  out_buffer_len = 0;
+  EXPECT_TRUE(FPDFPageObjMark_GetParamBlobValue(mark, "BlobKey", buffer, 256,
+                                                &out_buffer_len));
+  EXPECT_EQ(kBlobLen, out_buffer_len);
+  EXPECT_EQ(0, memcmp(kBlobValue, buffer, kBlobLen));
+
 // Render and check the bitmap is the expected one.
 #if _FX_PLATFORM_ == _FX_PLATFORM_APPLE_
   const char md5[] = "17d2b6cd574cf66170b09c8927529a94";