X-Git-Url: https://www.fi.muni.cz/~kas/git//home/kas/public_html/git/?a=blobdiff_plain;f=pdf%2Fxpdf%2FPDFDoc.cc;h=e156c3f7232e5c247ba1109ffca4e4d1cac86f75;hb=9315dc40269dcdc854e6aa39c74ff96324b52dc5;hp=111c1897e5c8c3962a9a80fbdbdceb63f9dc1204;hpb=fedba8db5f2a32dbfffee5699ee71365871fe45a;p=evince.git

diff --git a/pdf/xpdf/PDFDoc.cc b/pdf/xpdf/PDFDoc.cc
index 111c1897..e156c3f7 100644
--- a/pdf/xpdf/PDFDoc.cc
+++ b/pdf/xpdf/PDFDoc.cc
@@ -2,147 +2,321 @@
 //
 // PDFDoc.cc
 //
-// Copyright 1996 Derek B. Noonburg
+// Copyright 1996-2003 Glyph & Cog, LLC
 //
 //========================================================================
 
-#ifdef __GNUC__
+#include <aconf.h>
+
+#ifdef USE_GCC_PRAGMAS
 #pragma implementation
 #endif
 
+#include <locale.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <stddef.h>
 #include <string.h>
 #include "GString.h"
 #include "config.h"
+#include "GlobalParams.h"
 #include "Page.h"
 #include "Catalog.h"
+#include "Stream.h"
 #include "XRef.h"
 #include "Link.h"
 #include "OutputDev.h"
-#include "Params.h"
 #include "Error.h"
+#include "ErrorCodes.h"
+#include "Lexer.h"
+#include "Parser.h"
+#ifndef DISABLE_OUTLINE
+#include "Outline.h"
+#endif
 #include "PDFDoc.h"
 
+//------------------------------------------------------------------------
+
+#define headerSearchSize 1024	// read this many bytes at beginning of
+				//   file to look for '%PDF'
+
 //------------------------------------------------------------------------
 // PDFDoc
 //------------------------------------------------------------------------
 
-PDFDoc::PDFDoc(Stream *str1, GString *fileName1) {
-  Object catObj;
+PDFDoc::PDFDoc(GString *fileNameA, GString *ownerPassword,
+	       GString *userPassword) {
+  Object obj;
+  GString *fileName1, *fileName2;
 
-  // setup
   ok = gFalse;
-  catalog = NULL;
+  errCode = errNone;
+
+  file = NULL;
+  str = NULL;
   xref = NULL;
+  catalog = NULL;
   links = NULL;
+#ifndef DISABLE_OUTLINE
+  outline = NULL;
+#endif
+
+  fileName = fileNameA;
+  fileName1 = fileName;
+
 
-  str = str1;
-  fileName = fileName1;
-  if (!(str && str->isOk()))
+  // try to open file
+  fileName2 = NULL;
+#ifdef VMS
+  if (!(file = fopen(fileName1->getCString(), "rb", "ctx=stm"))) {
+    error(-1, "Couldn't open file '%s'", fileName1->getCString());
+    errCode = errOpenFile;
     return;
+  }
+#else
+  if (!(file = fopen(fileName1->getCString(), "rb"))) {
+    fileName2 = fileName->copy();
+    fileName2->lowerCase();
+    if (!(file = fopen(fileName2->getCString(), "rb"))) {
+      fileName2->upperCase();
+      if (!(file = fopen(fileName2->getCString(), "rb"))) {
+	error(-1, "Couldn't open file '%s'", fileName->getCString());
+	delete fileName2;
+	errCode = errOpenFile;
+	return;
+      }
+    }
+    delete fileName2;
+  }
+#endif
 
   // create stream
-/*  obj.initNull(); */
-/*  str  = new FileStream(file, 0, -1, &obj); */
+  obj.initNull();
+  str = new FileStream(file, 0, gFalse, 0, &obj);
+
+  ok = setup(ownerPassword, userPassword);
+}
+
+PDFDoc::PDFDoc(BaseStream *strA, GString *ownerPassword,
+	       GString *userPassword) {
+  ok = gFalse;
+  errCode = errNone;
+  fileName = NULL;
+  file = NULL;
+  str = strA;
+  xref = NULL;
+  catalog = NULL;
+  links = NULL;
+#ifndef DISABLE_OUTLINE
+  outline = NULL;
+#endif
+  ok = setup(ownerPassword, userPassword);
+}
+
+GBool PDFDoc::setup(GString *ownerPassword, GString *userPassword) {
+  str->reset();
 
   // check header
-/*  str->checkHeader(); FIXME */
+  checkHeader();
 
   // read xref table
-  xref = new XRef(str);
-/*  delete str; */
+  xref = new XRef(str, ownerPassword, userPassword);
   if (!xref->isOk()) {
     error(-1, "Couldn't read xref table");
-    return;
+    errCode = xref->getErrorCode();
+    return gFalse;
   }
 
   // read catalog
-  catalog = new Catalog(xref->getCatalog(&catObj));
-  catObj.free();
+  catalog = new Catalog(xref);
   if (!catalog->isOk()) {
     error(-1, "Couldn't read page catalog");
-    return;
+    errCode = errBadCatalog;
+    return gFalse;
   }
 
+#ifndef DISABLE_OUTLINE
+  // read outline
+  outline = new Outline(catalog->getOutline(), xref);
+#endif
+
   // done
-  ok = gTrue;
-  return;
+  return gTrue;
 }
 
 PDFDoc::~PDFDoc() {
-  if (catalog)
+#ifndef DISABLE_OUTLINE
+  if (outline) {
+    delete outline;
+  }
+#endif
+  if (catalog) {
     delete catalog;
-  if (xref)
+  }
+  if (xref) {
     delete xref;
+  }
   if (str) {
-    delete (str);
-    str = NULL;
+    delete str;
   }
-  if (fileName)
+  if (file) {
+    fclose(file);
+  }
+  if (fileName) {
     delete fileName;
-  if (links)
+  }
+  if (links) {
     delete links;
+  }
 }
 
-void PDFDoc::displayPage(OutputDev *out, int page, int zoom, int rotate,
-			 GBool doLinks) {
-  Link *link;
-  double x1, y1, x2, y2;
-  double w;
+// Check for a PDF header on this stream.  Skip past some garbage
+// if necessary.
+void PDFDoc::checkHeader() {
+  char hdrBuf[headerSearchSize+1];
+  char *p;
   int i;
 
-  if (printCommands)
+  pdfVersion = 0;
+  for (i = 0; i < headerSearchSize; ++i) {
+    hdrBuf[i] = str->getChar();
+  }
+  hdrBuf[headerSearchSize] = '\0';
+  for (i = 0; i < headerSearchSize - 5; ++i) {
+    if (!strncmp(&hdrBuf[i], "%PDF-", 5)) {
+      break;
+    }
+  }
+  if (i >= headerSearchSize - 5) {
+    error(-1, "May not be a PDF file (continuing anyway)");
+    return;
+  }
+  str->moveStart(i);
+  p = strtok(&hdrBuf[i+5], " \t\n\r");
+  {
+    char *theLocale = setlocale(LC_NUMERIC, "C");
+    pdfVersion = atof(p);
+    setlocale(LC_NUMERIC, theLocale);
+  }
+  if (!(hdrBuf[i+5] >= '0' && hdrBuf[i+5] <= '9') ||
+      pdfVersion > supportedPDFVersionNum + 0.0001) {
+    error(-1, "PDF version %s -- xpdf supports version %s"
+	  " (continuing anyway)", p, supportedPDFVersionStr);
+  }
+}
+
+void PDFDoc::displayPage(OutputDev *out, int page, double hDPI, double vDPI,
+			 int rotate, GBool crop, GBool doLinks,
+			 GBool (*abortCheckCbk)(void *data),
+			 void *abortCheckCbkData,
+                         GBool (*annotDisplayDecideCbk)(Annot *annot, void *user_data),
+                         void *annotDisplayDecideCbkData) {
+  Page *p;
+
+  if (globalParams->getPrintCommands()) {
     printf("***** page %d *****\n", page);
-  catalog->getPage(page)->display(out, zoom, rotate);
+  }
+  p = catalog->getPage(page);
   if (doLinks) {
-    if (links)
+    if (links) {
       delete links;
-    getLinks(page);
-    for (i = 0; i < links->getNumLinks(); ++i) {
-      link = links->getLink(i);
-      link->getBorder(&x1, &y1, &x2, &y2, &w);
-      if (w > 0)
-	out->drawLinkBorder(x1, y1, x2, y2, w);
+      links = NULL;
     }
-    out->dump();
+    getLinks(p);
+    p->display(out, hDPI, vDPI, rotate, crop, links, catalog,
+	       abortCheckCbk, abortCheckCbkData,
+               annotDisplayDecideCbk, annotDisplayDecideCbkData);
+  } else {
+    p->display(out, hDPI, vDPI, rotate, crop, NULL, catalog,
+	       abortCheckCbk, abortCheckCbkData,
+               annotDisplayDecideCbk, annotDisplayDecideCbkData);
   }
 }
 
 void PDFDoc::displayPages(OutputDev *out, int firstPage, int lastPage,
-			  int zoom, int rotate) {
-  Page *p;
+			  double hDPI, double vDPI, int rotate,
+			  GBool crop, GBool doLinks,
+			  GBool (*abortCheckCbk)(void *data),
+			  void *abortCheckCbkData,
+                          GBool (*annotDisplayDecideCbk)(Annot *annot, void *user_data),
+                          void *annotDisplayDecideCbkData) {
   int page;
 
   for (page = firstPage; page <= lastPage; ++page) {
-    if (printCommands)
-      printf("***** page %d *****\n", page);
-    p = catalog->getPage(page);
-    p->display(out, zoom, rotate);
+    displayPage(out, page, hDPI, vDPI, rotate, crop, doLinks,
+		abortCheckCbk, abortCheckCbkData,
+                annotDisplayDecideCbk, annotDisplayDecideCbkData);
+  }
+}
+
+void PDFDoc::displayPageSlice(OutputDev *out, int page,
+			      double hDPI, double vDPI,
+			      int rotate, GBool crop,
+			      int sliceX, int sliceY, int sliceW, int sliceH,
+			      GBool (*abortCheckCbk)(void *data),
+			      void *abortCheckCbkData,
+                              GBool (*annotDisplayDecideCbk)(Annot *annot, void *user_data),
+                              void *annotDisplayDecideCbkData) {
+  Page *p;
+
+  p = catalog->getPage(page);
+  p->displaySlice(out, hDPI, vDPI, rotate, crop,
+		  sliceX, sliceY, sliceW, sliceH,
+		  NULL, catalog,
+                  abortCheckCbk, abortCheckCbkData,
+                  annotDisplayDecideCbk, annotDisplayDecideCbkData);
+}
+
+GBool PDFDoc::isLinearized() {
+  Parser *parser;
+  Object obj1, obj2, obj3, obj4, obj5;
+  GBool lin;
+
+  lin = gFalse;
+  obj1.initNull();
+  parser = new Parser(xref,
+	     new Lexer(xref,
+	       str->makeSubStream(str->getStart(), gFalse, 0, &obj1)));
+  parser->getObj(&obj1);
+  parser->getObj(&obj2);
+  parser->getObj(&obj3);
+  parser->getObj(&obj4);
+  if (obj1.isInt() && obj2.isInt() && obj3.isCmd("obj") &&
+      obj4.isDict()) {
+    obj4.dictLookup("Linearized", &obj5);
+    if (obj5.isNum() && obj5.getNum() > 0) {
+      lin = gTrue;
+    }
+    obj5.free();
   }
+  obj4.free();
+  obj3.free();
+  obj2.free();
+  obj1.free();
+  delete parser;
+  return lin;
 }
 
 GBool PDFDoc::saveAs(GString *name) {
   FILE *f;
-  char buf[4096];
-  int n;
+  int c;
 
   if (!(f = fopen(name->getCString(), "wb"))) {
     error(-1, "Couldn't open file '%s'", name->getCString());
     return gFalse;
   }
   str->reset();
-  while (str->getLine (buf, 4096))
-    fputs (buf, f);
+  while ((c = str->getChar()) != EOF) {
+    fputc(c, f);
+  }
+  str->close();
   fclose(f);
   return gTrue;
 }
 
-void PDFDoc::getLinks(int page) {
+void PDFDoc::getLinks(Page *page) {
   Object obj;
 
-  links = new Links(catalog->getPage(page)->getAnnots(&obj),
-		    catalog->getBaseURI());
+  links = new Links(page->getAnnots(&obj), catalog->getBaseURI());
   obj.free();
 }