//
// 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();
}
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