Support linearized loading

testing/embedder_test.cpp

Index: testing/embedder_test.cpp
diff --git a/testing/embedder_test.cpp b/testing/embedder_test.cpp
index 9d99084050f1a2c7a718e691b23aea0854c5623b..7b984744ac87ca9055836ecb76586307ec721b9f 100644
--- a/testing/embedder_test.cpp
+++ b/testing/embedder_test.cpp
@@ -14,8 +14,8 @@
 #include <utility>
 #include <vector>
 
+#include "../public/fpdf_dataavail.h"
 #include "../public/fpdf_text.h"
-#include "../public/fpdfview.h"
 #include "testing/gmock/include/gmock/gmock.h"
 
 #ifdef PDF_ENABLE_V8
@@ -215,16 +215,39 @@ bool EmbedderTest::OpenDocument(const std::string& filename) {
   hints_.AddSegment = Add_Segment;
 
   avail_ = FPDFAvail_Create(&file_avail_, &file_access_);
-  (void)FPDFAvail_IsDocAvail(avail_, &hints_);
-
-  if (!FPDFAvail_IsLinearized(avail_)) {
-    document_ = FPDF_LoadCustomDocument(&file_access_, nullptr);
-  } else {
+  if (FPDFAvail_IsLinearized(avail_) == PDF_LINEARIZED) {
     document_ = FPDFAvail_GetDocument(avail_, nullptr);
+    if (!document_) {
+      return false;
+    }
+    int32_t nRet = PDF_DATA_NOTAVAIL;
+    while (nRet == PDF_DATA_NOTAVAIL) {
+      nRet = FPDFAvail_IsDocAvail(avail_, &hints_);
+    }
+    if (nRet == PDF_DATA_NOTAVAIL) {
+      return false;
+    }
+    if (FPDFAvail_IsFormAvail(avail_, &hints_) == PDF_FORM_NOTAVAIL) {
+      return false;
+    }
+    int page_count = FPDF_GetPageCount(document_);
+    for (int i = 0; i < page_count; ++i) {
+      nRet = PDF_DATA_NOTAVAIL;
+      while (nRet == PDF_DATA_NOTAVAIL) {
+        nRet = FPDFAvail_IsPageAvail(avail_, i, &hints_);
+      }
+      if (nRet == PDF_DATA_ERROR) {
+        return false;
+      }
+    }
+  } else {
+    document_ = FPDF_LoadCustomDocument(&file_access_, nullptr);
+    if (!document_) {
+      return false;
+    }
   }
 
   (void)FPDF_GetDocPermissions(document_);
-  (void)FPDFAvail_IsFormAvail(avail_, &hints_);
 
   IPDF_JSPLATFORM* platform = static_cast<IPDF_JSPLATFORM*>(this);
   memset(platform, 0, sizeof(IPDF_JSPLATFORM));