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diff --git a/lib/xpdf/PDFDoc.h b/lib/xpdf/PDFDoc.h
new file mode 100644
index 0000000..a1f42c0
--- /dev/null
+++ b/lib/xpdf/PDFDoc.h
@@ -0,0 +1,182 @@
+//========================================================================
+//
+// PDFDoc.h
+//
+// Copyright 1996-2003 Glyph & Cog, LLC
+//
+//========================================================================
+
+#ifndef PDFDOC_H
+#define PDFDOC_H
+
+#include <aconf.h>
+
+#ifdef USE_GCC_PRAGMAS
+#pragma interface
+#endif
+
+#include <stdio.h>
+#include "XRef.h"
+#include "Catalog.h"
+#include "Page.h"
+
+class GString;
+class BaseStream;
+class OutputDev;
+class Links;
+class LinkAction;
+class LinkDest;
+class Outline;
+
+//------------------------------------------------------------------------
+// PDFDoc
+//------------------------------------------------------------------------
+
+class PDFDoc {
+public:
+
+  PDFDoc(GString *fileNameA, GString *ownerPassword = NULL,
+	 GString *userPassword = NULL, void *guiDataA = NULL);
+#ifdef WIN32
+  PDFDoc(wchar_t *fileNameA, int fileNameLen, GString *ownerPassword = NULL,
+	 GString *userPassword = NULL, void *guiDataA = NULL);
+#endif
+  PDFDoc(BaseStream *strA, GString *ownerPassword = NULL,
+	 GString *userPassword = NULL, void *guiDataA = NULL);
+  ~PDFDoc();
+
+  // Was PDF document successfully opened?
+  GBool isOk() { return ok; }
+
+  // Get the error code (if isOk() returns false).
+  int getErrorCode() { return errCode; }
+
+  // Get file name.
+  GString *getFileName() { return fileName; }
+
+  // Get the xref table.
+  XRef *getXRef() { return xref; }
+
+  // Get catalog.
+  Catalog *getCatalog() { return catalog; }
+
+  // Get base stream.
+  BaseStream *getBaseStream() { return str; }
+
+  // Get page parameters.
+  double getPageMediaWidth(int page)
+    { return catalog->getPage(page)->getMediaWidth(); }
+  double getPageMediaHeight(int page)
+    { return catalog->getPage(page)->getMediaHeight(); }
+  double getPageCropWidth(int page)
+    { return catalog->getPage(page)->getCropWidth(); }
+  double getPageCropHeight(int page)
+    { return catalog->getPage(page)->getCropHeight(); }
+  int getPageRotate(int page)
+    { return catalog->getPage(page)->getRotate(); }
+
+  // Get number of pages.
+  int getNumPages() { return catalog->getNumPages(); }
+
+  // Return the contents of the metadata stream, or NULL if there is
+  // no metadata.
+  GString *readMetadata() { return catalog->readMetadata(); }
+
+  // Return the structure tree root object.
+  Object *getStructTreeRoot() { return catalog->getStructTreeRoot(); }
+
+  // Display a page.
+  void displayPage(OutputDev *out, int page, double hDPI, double vDPI,
+		   int rotate, GBool useMediaBox, GBool crop,
+		   GBool doLinks,
+		   GBool (*abortCheckCbk)(void *data) = NULL,
+		   void *abortCheckCbkData = NULL);
+
+  // Display a range of pages.
+  void displayPages(OutputDev *out, int firstPage, int lastPage,
+		    double hDPI, double vDPI, int rotate,
+		    GBool useMediaBox, GBool crop, GBool doLinks,
+		    GBool (*abortCheckCbk)(void *data) = NULL,
+		    void *abortCheckCbkData = NULL);
+
+  // Display part of a page.
+  void displayPageSlice(OutputDev *out, int page,
+			double hDPI, double vDPI, int rotate,
+			GBool useMediaBox, GBool crop, GBool doLinks,
+			int sliceX, int sliceY, int sliceW, int sliceH,
+			GBool (*abortCheckCbk)(void *data) = NULL,
+			void *abortCheckCbkData = NULL);
+
+  // Find a page, given its object ID.  Returns page number, or 0 if
+  // not found.
+  int findPage(int num, int gen) { return catalog->findPage(num, gen); }
+
+  // Returns the links for the current page, transferring ownership to
+  // the caller.
+  Links *takeLinks();
+
+  // Find a named destination.  Returns the link destination, or
+  // NULL if <name> is not a destination.
+  LinkDest *findDest(GString *name)
+    { return catalog->findDest(name); }
+
+#ifndef DISABLE_OUTLINE
+  // Return the outline object.
+  Outline *getOutline() { return outline; }
+#endif
+
+  // Is the file encrypted?
+  GBool isEncrypted() { return xref->isEncrypted(); }
+
+  // Check various permissions.
+  GBool okToPrint(GBool ignoreOwnerPW = gFalse)
+    { return xref->okToPrint(ignoreOwnerPW); }
+  GBool okToChange(GBool ignoreOwnerPW = gFalse)
+    { return xref->okToChange(ignoreOwnerPW); }
+  GBool okToCopy(GBool ignoreOwnerPW = gFalse)
+    { return xref->okToCopy(ignoreOwnerPW); }
+  GBool okToAddNotes(GBool ignoreOwnerPW = gFalse)
+    { return xref->okToAddNotes(ignoreOwnerPW); }
+
+  // Is this document linearized?
+  GBool isLinearized();
+
+  // Return the document's Info dictionary (if any).
+  Object *getDocInfo(Object *obj) { return xref->getDocInfo(obj); }
+  Object *getDocInfoNF(Object *obj) { return xref->getDocInfoNF(obj); }
+
+  // Return the PDF version specified by the file.
+  double getPDFVersion() { return pdfVersion; }
+
+  // Save this file with another name.
+  GBool saveAs(GString *name);
+
+  // Return a pointer to the GUI (XPDFCore or WinPDFCore object).
+  void *getGUIData() { return guiData; }
+
+
+private:
+
+  GBool setup(GString *ownerPassword, GString *userPassword);
+  void checkHeader();
+  GBool checkEncryption(GString *ownerPassword, GString *userPassword);
+  void getLinks(Page *page);
+
+  GString *fileName;
+  FILE *file;
+  BaseStream *str;
+  void *guiData;
+  double pdfVersion;
+  XRef *xref;
+  Catalog *catalog;
+  Links *links;
+#ifndef DISABLE_OUTLINE
+  Outline *outline;
+#endif
+
+
+  GBool ok;
+  int errCode;
+};
+
+#endif