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//========================================================================
//
// Outline.cc
//
// Copyright 2002-2003 Glyph & Cog, LLC
//
//========================================================================
//========================================================================
//
// Modified under the Poppler project - http://poppler.freedesktop.org
//
// All changes made under the Poppler project to this file are licensed
// under GPL version 2 or later
//
// Copyright (C) 2005 Marco Pesenti Gritti <mpg@redhat.com>
// Copyright (C) 2008 Albert Astals Cid <aacid@kde.org>
// Copyright (C) 2009 Nick Jones <nick.jones@network-box.com>
//
// To see a description of the changes please see the Changelog file that
// came with your tarball or type make ChangeLog if you are building from git
//
//========================================================================
#include <config.h>
#ifdef USE_GCC_PRAGMAS
#pragma implementation
#endif
#include "goo/gmem.h"
#include "goo/GooString.h"
#include "goo/GooList.h"
#include "XRef.h"
#include "Link.h"
#include "PDFDocEncoding.h"
#include "Outline.h"
//------------------------------------------------------------------------
Outline::Outline(Object *outlineObj, XRef *xref) {
Object first, last;
items = NULL;
if (!outlineObj->isDict()) {
return;
}
items = OutlineItem::readItemList(outlineObj->dictLookupNF("First", &first),
outlineObj->dictLookupNF("Last", &last),
xref);
first.free();
last.free();
}
Outline::~Outline() {
if (items) {
deleteGooList(items, OutlineItem);
}
}
//------------------------------------------------------------------------
OutlineItem::OutlineItem(Dict *dict, XRef *xrefA) {
Object obj1;
GooString *s;
int i;
xref = xrefA;
title = NULL;
action = NULL;
kids = NULL;
if (dict->lookup("Title", &obj1)->isString()) {
s = obj1.getString();
if ((s->getChar(0) & 0xff) == 0xfe &&
(s->getChar(1) & 0xff) == 0xff) {
titleLen = (s->getLength() - 2) / 2;
title = (Unicode *)gmallocn(titleLen, sizeof(Unicode));
for (i = 0; i < titleLen; ++i) {
title[i] = ((s->getChar(2 + 2*i) & 0xff) << 8) |
(s->getChar(3 + 2*i) & 0xff);
}
} else {
titleLen = s->getLength();
title = (Unicode *)gmallocn(titleLen, sizeof(Unicode));
for (i = 0; i < titleLen; ++i) {
title[i] = pdfDocEncoding[s->getChar(i) & 0xff];
}
}
} else {
titleLen = 0;
}
obj1.free();
if (!dict->lookup("Dest", &obj1)->isNull()) {
action = LinkAction::parseDest(&obj1);
} else {
obj1.free();
if (!dict->lookup("A", &obj1)->isNull()) {
action = LinkAction::parseAction(&obj1);
}
}
obj1.free();
dict->lookupNF("First", &firstRef);
dict->lookupNF("Last", &lastRef);
dict->lookupNF("Next", &nextRef);
startsOpen = gFalse;
if (dict->lookup("Count", &obj1)->isInt()) {
if (obj1.getInt() > 0) {
startsOpen = gTrue;
}
}
obj1.free();
}
OutlineItem::~OutlineItem() {
close();
if (title) {
gfree(title);
}
if (action) {
delete action;
}
firstRef.free();
lastRef.free();
nextRef.free();
}
GooList *OutlineItem::readItemList(Object *firstItemRef, Object *lastItemRef,
XRef *xrefA) {
GooList *items;
char* alreadyRead;
OutlineItem *item;
Object obj;
Object *p;
if (!lastItemRef->isRef())
return NULL;
items = new GooList();
alreadyRead = (char *)gmalloc(xrefA->getNumObjects());
memset(alreadyRead, 0, xrefA->getNumObjects());
p = firstItemRef;
while (p->isRef() &&
(p->getRefNum() >= 0) &&
(p->getRefNum() < xrefA->getNumObjects()) &&
!alreadyRead[p->getRefNum()]) {
if (!p->fetch(xrefA, &obj)->isDict()) {
obj.free();
break;
}
alreadyRead[p->getRefNum()] = 1;
item = new OutlineItem(obj.getDict(), xrefA);
obj.free();
items->append(item);
if (p->getRef().num == lastItemRef->getRef().num &&
p->getRef().gen == lastItemRef->getRef().gen) {
break;
}
p = &item->nextRef;
}
gfree(alreadyRead);
if (!items->getLength()) {
delete items;
items = NULL;
}
return items;
}
void OutlineItem::open() {
if (!kids) {
kids = readItemList(&firstRef, &lastRef, xref);
}
}
void OutlineItem::close() {
if (kids) {
deleteGooList(kids, OutlineItem);
kids = NULL;
}
}
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