1 files changed, 77 insertions, 0 deletions
diff --git a/external/pdfium/0001-Add-FPDFFormObj_CountObjects-API.patch.1 b/external/pdfium/0001-Add-FPDFFormObj_CountObjects-API.patch.1
new file mode 100644
index 000000000000..190fc6b2c9b6
--- /dev/null
+++ b/external/pdfium/0001-Add-FPDFFormObj_CountObjects-API.patch.1
@@ -0,0 +1,77 @@
+From b66077d3ef7ba594f2a831840783549f4dd70d86 Mon Sep 17 00:00:00 2001
+Date: Wed, 11 Jul 2018 13:25:02 +0000
+Subject: [PATCH] Add FPDFFormObj_CountObjects() API
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+To find out the number of sub-objects a form object has, similar to how
+FPDFPage_CountObjects() does it for page objects.
+
+Change-Id: I7e5775dece42b74fd5b71b1d9622a1aa37bf64ac
+Reviewed-on: https://pdfium-review.googlesource.com/37316
+Commit-Queue: Nicolás Peña Moreno <npm@chromium.org>
+Reviewed-by: Nicolás Peña Moreno <npm@chromium.org>
+---
+ fpdfsdk/fpdf_edit_embeddertest.cpp | 14 ++++++
+ fpdfsdk/fpdf_editpage.cpp          | 21 +++++++++
+ fpdfsdk/fpdf_view_c_api_test.c     |  1 +
+ public/fpdf_edit.h                 |  9 ++++
+ testing/resources/form_object.in   | 80 +++++++++++++++++++++++++++++++++
+ testing/resources/form_object.pdf  | 91 ++++++++++++++++++++++++++++++++++++++
+ 6 files changed, 216 insertions(+)
+ create mode 100644 testing/resources/form_object.in
+ create mode 100644 testing/resources/form_object.pdf
+
+diff --git a/fpdfsdk/fpdf_editpage.cpp b/fpdfsdk/fpdf_editpage.cpp
+index 8a1200885..4151de5df 100644
+--- a/fpdfsdk/fpdf_editpage.cpp
++++ b/fpdfsdk/fpdf_editpage.cpp
+@@ -751,3 +751,24 @@ FPDFPageObj_SetLineCap(FPDF_PAGEOBJECT page_object, int line_cap) {
+   pPageObj->SetDirty(true);
+   return true;
+ }
++
++FPDF_EXPORT int FPDF_CALLCONV
++FPDFFormObj_CountObjects(FPDF_PAGEOBJECT page_object) {
++  auto* pPageObj = CPDFPageObjectFromFPDFPageObject(page_object);
++  if (!pPageObj)
++    return -1;
++
++  CPDF_FormObject* pFormObject = pPageObj->AsForm();
++  if (!pFormObject)
++    return -1;
++
++  const CPDF_Form* pForm = pFormObject->form();
++  if (!pForm)
++    return -1;
++
++  const CPDF_PageObjectList* pObjectList = pForm->GetPageObjectList();
++  if (!pObjectList)
++    return -1;
++
++  return pObjectList->size();
++}
+diff --git a/public/fpdf_edit.h b/public/fpdf_edit.h
+index b85537d0b..e6f193a37 100644
+--- a/public/fpdf_edit.h
++++ b/public/fpdf_edit.h
+@@ -1226,6 +1226,15 @@ FPDFPageObj_CreateTextObj(FPDF_DOCUMENT document,
+ // Returns one of the FPDF_TEXTRENDERMODE_* flags on success, -1 on error.
+ FPDF_EXPORT int FPDF_CALLCONV FPDFText_GetTextRenderMode(FPDF_PAGEOBJECT text);
+ 
++// Experimental API.
++// Get number of page objects inside |form_object|.
++//
++//   form_object - handle to a form object.
++//
++// Returns the number of objects in |form_object| on success, -1 on error.
++FPDF_EXPORT int FPDF_CALLCONV
++FPDFFormObj_CountObjects(FPDF_PAGEOBJECT form_object);
++
+ #ifdef __cplusplus
+ }  // extern "C"
+ #endif  // __cplusplus
+-- 
+2.16.4
+