Support linearized loading

fpdfsdk/src/fpdf_dataavail.cpp

Index: fpdfsdk/src/fpdf_dataavail.cpp
diff --git a/fpdfsdk/src/fpdf_dataavail.cpp b/fpdfsdk/src/fpdf_dataavail.cpp
index 9ce298d0c545256d7c5abda89d8d31c660a9b05d..b8be12c3e760ae75a7a01d8694a9e56445f62641 100644
--- a/fpdfsdk/src/fpdf_dataavail.cpp
+++ b/fpdfsdk/src/fpdf_dataavail.cpp
@@ -86,10 +86,10 @@ DLLEXPORT void STDCALL FPDFAvail_Destroy(FPDF_AVAIL avail) {
   delete (CFPDF_DataAvail*)avail;
 }
 
-DLLEXPORT int STDCALL FPDFAvail_IsDocAvail(FPDF_AVAIL avail,
-                                           FX_DOWNLOADHINTS* hints) {
-  if (avail == NULL || hints == NULL)
-    return 0;
+DLLEXPORT FX_BOOL STDCALL

[Tom Sepez, 2015/09/22 19:17:59]

nit: Format seems wrong

[jun_fang, 2015/09/23 12:26:59]

Maybe it was caused by the command "git cl format".

+FPDFAvail_IsDocAvail(FPDF_AVAIL avail, FX_DOWNLOADHINTS* hints) {
+  if (!avail || !hints)
+    return true;
   CFPDF_DownloadHintsWrap hints_wrap(hints);
   return ((CFPDF_DataAvail*)avail)->m_pDataAvail->IsDocAvail(&hints_wrap);
 }
@@ -120,11 +120,11 @@ DLLEXPORT int STDCALL FPDFAvail_GetFirstPageNum(FPDF_DOCUMENT doc) {
   return ((CPDF_Parser*)pDoc->GetParser())->GetFirstPageNo();
 }
 
-DLLEXPORT int STDCALL FPDFAvail_IsPageAvail(FPDF_AVAIL avail,
-                                            int page_index,
-                                            FX_DOWNLOADHINTS* hints) {
-  if (avail == NULL || hints == NULL)
-    return 0;
+DLLEXPORT FX_BOOL STDCALL FPDFAvail_IsPageAvail(FPDF_AVAIL avail,
+                                                int page_index,
+                                                FX_DOWNLOADHINTS* hints) {
+  if (!avail || !hints)
+    return true;
   CFPDF_DownloadHintsWrap hints_wrap(hints);
   return ((CFPDF_DataAvail*)avail)
       ->m_pDataAvail->IsPageAvail(page_index, &hints_wrap);
@@ -132,14 +132,14 @@ DLLEXPORT int STDCALL FPDFAvail_IsPageAvail(FPDF_AVAIL avail,
 
 DLLEXPORT int STDCALL FPDFAvail_IsFormAvail(FPDF_AVAIL avail,
                                             FX_DOWNLOADHINTS* hints) {
-  if (avail == NULL || hints == NULL)
-    return -1;
+  if (!avail || !hints)
+    return PDFFORM_AVAIL;
   CFPDF_DownloadHintsWrap hints_wrap(hints);
   return ((CFPDF_DataAvail*)avail)->m_pDataAvail->IsFormAvail(&hints_wrap);
 }
 
-DLLEXPORT FPDF_BOOL STDCALL FPDFAvail_IsLinearized(FPDF_AVAIL avail) {
-  if (avail == NULL)
-    return -1;
+DLLEXPORT int STDCALL FPDFAvail_IsLinearized(FPDF_AVAIL avail) {
+  if (!avail)
+    return PDF_UNKNOW_LINEARIZED;
   return ((CFPDF_DataAvail*)avail)->m_pDataAvail->IsLinearizedPDF();
 }