//========================================================================//// Outline.cc//// Copyright 2002-2003 Glyph & Cog, LLC////========================================================================#include <aconf.h>#ifdef USE_GCC_PRAGMAS#pragma implementation#endif#include "gmem.h"#include "GString.h"#include "GList.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) {    deleteGList(items, OutlineItem);  }}//------------------------------------------------------------------------OutlineItem::OutlineItem(Dict *dict, XRef *xrefA) {  Object obj1;  GString *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();}GList *OutlineItem::readItemList(Object *firstItemRef, Object *lastItemRef,				 XRef *xrefA) {  GList *items;  OutlineItem *item;  Object obj;  Object *p;  items = new GList();  p = firstItemRef;  while (p->isRef()) {    if (!p->fetch(xrefA, &obj)->isDict()) {      obj.free();      break;    }    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;  }  return items;}void OutlineItem::open() {  if (!kids) {    kids = readItemList(&firstRef, &lastRef, xref);  }}void OutlineItem::close() {  if (kids) {    deleteGList(kids, OutlineItem);    kids = NULL;  }}