diff options
Diffstat (limited to 'Build/source/libs/poppler/poppler-0.24.3/poppler/Catalog.cc')
-rw-r--r-- | Build/source/libs/poppler/poppler-0.24.3/poppler/Catalog.cc | 1019 |
1 files changed, 1019 insertions, 0 deletions
diff --git a/Build/source/libs/poppler/poppler-0.24.3/poppler/Catalog.cc b/Build/source/libs/poppler/poppler-0.24.3/poppler/Catalog.cc new file mode 100644 index 00000000000..6bd511a11aa --- /dev/null +++ b/Build/source/libs/poppler/poppler-0.24.3/poppler/Catalog.cc @@ -0,0 +1,1019 @@ +//======================================================================== +// +// Catalog.cc +// +// Copyright 1996-2007 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 Kristian Høgsberg <krh@redhat.com> +// Copyright (C) 2005-2013 Albert Astals Cid <aacid@kde.org> +// Copyright (C) 2005 Jeff Muizelaar <jrmuizel@nit.ca> +// Copyright (C) 2005 Jonathan Blandford <jrb@redhat.com> +// Copyright (C) 2005 Marco Pesenti Gritti <mpg@redhat.com> +// Copyright (C) 2005, 2006, 2008 Brad Hards <bradh@frogmouth.net> +// Copyright (C) 2006, 2008, 2011 Carlos Garcia Campos <carlosgc@gnome.org> +// Copyright (C) 2007 Julien Rebetez <julienr@svn.gnome.org> +// Copyright (C) 2008, 2011 Pino Toscano <pino@kde.org> +// Copyright (C) 2009 Ilya Gorenbein <igorenbein@finjan.com> +// Copyright (C) 2010 Hib Eris <hib@hiberis.nl> +// Copyright (C) 2012 Fabio D'Urso <fabiodurso@hotmail.it> +// Copyright (C) 2013 Thomas Freitag <Thomas.Freitag@alfa.de> +// Copyright (C) 2013 Julien Nabet <serval2412@yahoo.fr> +// +// 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 <stddef.h> +#include <stdlib.h> +#include "goo/gmem.h" +#include "Object.h" +#include "PDFDoc.h" +#include "XRef.h" +#include "Array.h" +#include "Dict.h" +#include "Page.h" +#include "Error.h" +#include "Link.h" +#include "PageLabelInfo.h" +#include "Catalog.h" +#include "Form.h" +#include "OptionalContent.h" +#include "ViewerPreferences.h" +#include "FileSpec.h" + +#if MULTITHREADED +# define catalogLocker() MutexLocker locker(&mutex) +#else +# define catalogLocker() +#endif +//------------------------------------------------------------------------ +// Catalog +//------------------------------------------------------------------------ + +Catalog::Catalog(PDFDoc *docA) { + Object catDict, pagesDict, pagesDictRef; + Object obj, obj2; + Object optContentProps; + +#if MULTITHREADED + gInitMutex(&mutex); +#endif + ok = gTrue; + doc = docA; + xref = doc->getXRef(); + pages = NULL; + pageRefs = NULL; + numPages = -1; + pagesSize = 0; + baseURI = NULL; + pageLabelInfo = NULL; + form = NULL; + optContent = NULL; + pageMode = pageModeNull; + pageLayout = pageLayoutNull; + destNameTree = NULL; + embeddedFileNameTree = NULL; + jsNameTree = NULL; + viewerPrefs = NULL; + + pagesList = NULL; + pagesRefList = NULL; + attrsList = NULL; + kidsIdxList = NULL; + lastCachedPage = 0; + + xref->getCatalog(&catDict); + if (!catDict.isDict()) { + error(errSyntaxError, -1, "Catalog object is wrong type ({0:s})", catDict.getTypeName()); + goto err1; + } + // get the AcroForm dictionary + catDict.dictLookup("AcroForm", &acroForm); + + // read base URI + if (catDict.dictLookup("URI", &obj)->isDict()) { + if (obj.dictLookup("Base", &obj2)->isString()) { + baseURI = obj2.getString()->copy(); + } + obj2.free(); + } + obj.free(); + + // get the Optional Content dictionary + if (catDict.dictLookup("OCProperties", &optContentProps)->isDict()) { + optContent = new OCGs(&optContentProps, xref); + if (!optContent->isOk ()) { + delete optContent; + optContent = NULL; + } + } + optContentProps.free(); + + // get the ViewerPreferences dictionary + catDict.dictLookup("ViewerPreferences", &viewerPreferences); + catDict.free(); + return; + + err1: + catDict.free(); + ok = gFalse; +} + +Catalog::~Catalog() { + delete kidsIdxList; + if (attrsList) { + std::vector<PageAttrs *>::iterator it; + for (it = attrsList->begin() ; it != attrsList->end(); ++it ) { + delete *it; + } + delete attrsList; + } + delete pagesRefList; + if (pagesList) { + std::vector<Dict *>::iterator it; + for (it = pagesList->begin() ; it != pagesList->end(); ++it ) { + if (!(*it)->decRef()) { + delete *it; + } + } + delete pagesList; + } + if (pages) { + for (int i = 0; i < pagesSize; ++i) { + if (pages[i]) { + delete pages[i]; + } + } + gfree(pages); + gfree(pageRefs); + } + names.free(); + dests.free(); + delete destNameTree; + delete embeddedFileNameTree; + delete jsNameTree; + if (baseURI) { + delete baseURI; + } + delete pageLabelInfo; + delete form; + delete optContent; + delete viewerPrefs; + metadata.free(); + structTreeRoot.free(); + outline.free(); + acroForm.free(); + viewerPreferences.free(); +#if MULTITHREADED + gDestroyMutex(&mutex); +#endif +} + +GooString *Catalog::readMetadata() { + GooString *s; + Dict *dict; + Object obj; + + catalogLocker(); + if (metadata.isNone()) { + Object catDict; + + xref->getCatalog(&catDict); + if (catDict.isDict()) { + catDict.dictLookup("Metadata", &metadata); + } else { + error(errSyntaxError, -1, "Catalog object is wrong type ({0:s})", catDict.getTypeName()); + metadata.initNull(); + } + catDict.free(); + } + + if (!metadata.isStream()) { + return NULL; + } + dict = metadata.streamGetDict(); + if (!dict->lookup("Subtype", &obj)->isName("XML")) { + error(errSyntaxWarning, -1, "Unknown Metadata type: '{0:s}'", + obj.isName() ? obj.getName() : "???"); + } + obj.free(); + s = new GooString(); + metadata.getStream()->fillGooString(s); + metadata.streamClose(); + return s; +} + +Page *Catalog::getPage(int i) +{ + if (i < 1) return NULL; + + catalogLocker(); + if (i > lastCachedPage) { + GBool cached = cachePageTree(i); + if ( cached == gFalse) { + return NULL; + } + } + return pages[i-1]; +} + +Ref *Catalog::getPageRef(int i) +{ + if (i < 1) return NULL; + + catalogLocker(); + if (i > lastCachedPage) { + GBool cached = cachePageTree(i); + if ( cached == gFalse) { + return NULL; + } + } + return &pageRefs[i-1]; +} + +GBool Catalog::cachePageTree(int page) +{ + Dict *pagesDict; + + if (pagesList == NULL) { + + Object catDict; + Ref pagesRef; + + xref->getCatalog(&catDict); + + if (catDict.isDict()) { + Object pagesDictRef; + if (catDict.dictLookupNF("Pages", &pagesDictRef)->isRef() && + pagesDictRef.getRefNum() >= 0 && + pagesDictRef.getRefNum() < xref->getNumObjects()) { + pagesRef = pagesDictRef.getRef(); + pagesDictRef.free(); + } else { + error(errSyntaxError, -1, "Catalog dictionary does not contain a valid \"Pages\" entry"); + pagesDictRef.free(); + catDict.free(); + return gFalse; + } + } else { + error(errSyntaxError, -1, "Could not find catalog dictionary"); + catDict.free(); + return gFalse; + } + + Object obj; + catDict.dictLookup("Pages", &obj); + catDict.free(); + // This should really be isDict("Pages"), but I've seen at least one + // PDF file where the /Type entry is missing. + if (obj.isDict()) { + obj.getDict()->incRef(); + pagesDict = obj.getDict(); + obj.free(); + } + else { + error(errSyntaxError, -1, "Top-level pages object is wrong type ({0:s})", obj.getTypeName()); + obj.free(); + return gFalse; + } + + pagesSize = getNumPages(); + pages = (Page **)gmallocn(pagesSize, sizeof(Page *)); + pageRefs = (Ref *)gmallocn(pagesSize, sizeof(Ref)); + for (int i = 0; i < pagesSize; ++i) { + pages[i] = NULL; + pageRefs[i].num = -1; + pageRefs[i].gen = -1; + } + + pagesList = new std::vector<Dict *>(); + pagesList->push_back(pagesDict); + pagesRefList = new std::vector<Ref>(); + pagesRefList->push_back(pagesRef); + attrsList = new std::vector<PageAttrs *>(); + attrsList->push_back(new PageAttrs(NULL, pagesDict)); + kidsIdxList = new std::vector<int>(); + kidsIdxList->push_back(0); + lastCachedPage = 0; + + } + + while(1) { + + if (page <= lastCachedPage) return gTrue; + + if (pagesList->empty()) return gFalse; + + pagesDict = pagesList->back(); + Object kids; + pagesDict->lookup("Kids", &kids); + if (!kids.isArray()) { + error(errSyntaxError, -1, "Kids object (page {0:d}) is wrong type ({1:s})", + lastCachedPage+1, kids.getTypeName()); + kids.free(); + return gFalse; + } + + int kidsIdx = kidsIdxList->back(); + if (kidsIdx >= kids.arrayGetLength()) { + if (!pagesList->back()->decRef()) { + delete pagesList->back(); + } + pagesList->pop_back(); + pagesRefList->pop_back(); + delete attrsList->back(); + attrsList->pop_back(); + kidsIdxList->pop_back(); + if (!kidsIdxList->empty()) kidsIdxList->back()++; + kids.free(); + continue; + } + + Object kidRef; + kids.arrayGetNF(kidsIdx, &kidRef); + if (!kidRef.isRef()) { + error(errSyntaxError, -1, "Kid object (page {0:d}) is not an indirect reference ({1:s})", + lastCachedPage+1, kidRef.getTypeName()); + kidRef.free(); + kids.free(); + return gFalse; + } + + GBool loop = gFalse;; + for (size_t i = 0; i < pagesRefList->size(); i++) { + if (((*pagesRefList)[i]).num == kidRef.getRefNum()) { + loop = gTrue; + break; + } + } + if (loop) { + error(errSyntaxError, -1, "Loop in Pages tree"); + kidRef.free(); + kids.free(); + kidsIdxList->back()++; + continue; + } + + Object kid; + kids.arrayGet(kidsIdx, &kid); + kids.free(); + if (kid.isDict("Page") || (kid.isDict() && !kid.getDict()->hasKey("Kids"))) { + PageAttrs *attrs = new PageAttrs(attrsList->back(), kid.getDict()); + Page *p = new Page(doc, lastCachedPage+1, kid.getDict(), + kidRef.getRef(), attrs, form); + if (!p->isOk()) { + error(errSyntaxError, -1, "Failed to create page (page {0:d})", lastCachedPage+1); + delete p; + kidRef.free(); + kid.free(); + return gFalse; + } + + if (lastCachedPage >= numPages) { + error(errSyntaxError, -1, "Page count in top-level pages object is incorrect"); + kidRef.free(); + kid.free(); + return gFalse; + } + + pages[lastCachedPage] = p; + pageRefs[lastCachedPage].num = kidRef.getRefNum(); + pageRefs[lastCachedPage].gen = kidRef.getRefGen(); + + lastCachedPage++; + kidsIdxList->back()++; + + // This should really be isDict("Pages"), but I've seen at least one + // PDF file where the /Type entry is missing. + } else if (kid.isDict()) { + attrsList->push_back(new PageAttrs(attrsList->back(), kid.getDict())); + pagesRefList->push_back(kidRef.getRef()); + kid.getDict()->incRef(); + pagesList->push_back(kid.getDict()); + kidsIdxList->push_back(0); + } else { + error(errSyntaxError, -1, "Kid object (page {0:d}) is wrong type ({1:s})", + lastCachedPage+1, kid.getTypeName()); + kidsIdxList->back()++; + } + kidRef.free(); + kid.free(); + + } + + return gFalse; +} + +int Catalog::findPage(int num, int gen) { + int i; + + for (i = 0; i < getNumPages(); ++i) { + Ref *ref = getPageRef(i+1); + if (ref != NULL && ref->num == num && ref->gen == gen) + return i + 1; + } + return 0; +} + +LinkDest *Catalog::findDest(GooString *name) { + LinkDest *dest; + Object obj1, obj2; + GBool found; + + // try named destination dictionary then name tree + found = gFalse; + if (getDests()->isDict()) { + if (!getDests()->dictLookup(name->getCString(), &obj1)->isNull()) + found = gTrue; + else + obj1.free(); + } + if (!found) { + catalogLocker(); + if (getDestNameTree()->lookup(name, &obj1)) + found = gTrue; + else + obj1.free(); + } + if (!found) + return NULL; + + // construct LinkDest + dest = NULL; + if (obj1.isArray()) { + dest = new LinkDest(obj1.getArray()); + } else if (obj1.isDict()) { + if (obj1.dictLookup("D", &obj2)->isArray()) + dest = new LinkDest(obj2.getArray()); + else + error(errSyntaxWarning, -1, "Bad named destination value"); + obj2.free(); + } else { + error(errSyntaxWarning, -1, "Bad named destination value"); + } + obj1.free(); + if (dest && !dest->isOk()) { + delete dest; + dest = NULL; + } + + return dest; +} + +FileSpec *Catalog::embeddedFile(int i) +{ + Object efDict; + Object obj; + catalogLocker(); + obj = getEmbeddedFileNameTree()->getValue(i); + FileSpec *embeddedFile = 0; + if (obj.isRef()) { + Object fsDict; + embeddedFile = new FileSpec(obj.fetch(xref, &fsDict)); + fsDict.free(); + } else if (obj.isDict()) { + embeddedFile = new FileSpec(&obj); + } else { + Object null; + embeddedFile = new FileSpec(&null); + } + return embeddedFile; +} + +GooString *Catalog::getJS(int i) +{ + Object obj; + // getJSNameTree()->getValue(i) returns a shallow copy of the object so we + // do not need to free it + catalogLocker(); + getJSNameTree()->getValue(i).fetch(xref, &obj); + + if (!obj.isDict()) { + obj.free(); + return 0; + } + Object obj2; + if (!obj.dictLookup("S", &obj2)->isName()) { + obj2.free(); + obj.free(); + return 0; + } + if (strcmp(obj2.getName(), "JavaScript")) { + obj2.free(); + obj.free(); + return 0; + } + obj2.free(); + obj.dictLookup("JS", &obj2); + GooString *js = 0; + if (obj2.isString()) { + js = new GooString(obj2.getString()); + } + else if (obj2.isStream()) { + Stream *stream = obj2.getStream(); + js = new GooString(); + stream->fillGooString(js); + } + obj2.free(); + obj.free(); + return js; +} + +Catalog::PageMode Catalog::getPageMode() { + + catalogLocker(); + if (pageMode == pageModeNull) { + + Object catDict, obj; + + pageMode = pageModeNone; + + xref->getCatalog(&catDict); + if (!catDict.isDict()) { + error(errSyntaxError, -1, "Catalog object is wrong type ({0:s})", catDict.getTypeName()); + catDict.free(); + return pageMode; + } + + if (catDict.dictLookup("PageMode", &obj)->isName()) { + if (obj.isName("UseNone")) + pageMode = pageModeNone; + else if (obj.isName("UseOutlines")) + pageMode = pageModeOutlines; + else if (obj.isName("UseThumbs")) + pageMode = pageModeThumbs; + else if (obj.isName("FullScreen")) + pageMode = pageModeFullScreen; + else if (obj.isName("UseOC")) + pageMode = pageModeOC; + else if (obj.isName("UseAttachments")) + pageMode = pageModeAttach; + } + obj.free(); + catDict.free(); + } + return pageMode; +} + +Catalog::PageLayout Catalog::getPageLayout() { + + catalogLocker(); + if (pageLayout == pageLayoutNull) { + + Object catDict, obj; + + pageLayout = pageLayoutNone; + + xref->getCatalog(&catDict); + if (!catDict.isDict()) { + error(errSyntaxError, -1, "Catalog object is wrong type ({0:s})", catDict.getTypeName()); + catDict.free(); + return pageLayout; + } + + pageLayout = pageLayoutNone; + if (catDict.dictLookup("PageLayout", &obj)->isName()) { + if (obj.isName("SinglePage")) + pageLayout = pageLayoutSinglePage; + if (obj.isName("OneColumn")) + pageLayout = pageLayoutOneColumn; + if (obj.isName("TwoColumnLeft")) + pageLayout = pageLayoutTwoColumnLeft; + if (obj.isName("TwoColumnRight")) + pageLayout = pageLayoutTwoColumnRight; + if (obj.isName("TwoPageLeft")) + pageLayout = pageLayoutTwoPageLeft; + if (obj.isName("TwoPageRight")) + pageLayout = pageLayoutTwoPageRight; + } + obj.free(); + catDict.free(); + } + return pageLayout; +} + +NameTree::NameTree() +{ + size = 0; + length = 0; + entries = NULL; +} + +NameTree::~NameTree() +{ + int i; + + for (i = 0; i < length; i++) + delete entries[i]; + + gfree(entries); +} + +NameTree::Entry::Entry(Array *array, int index) { + if (!array->getString(index, &name) || !array->getNF(index + 1, &value)) { + Object aux; + array->get(index, &aux); + if (aux.isString() && array->getNF(index + 1, &value) ) + { + name.append(aux.getString()); + } + else + error(errSyntaxError, -1, "Invalid page tree"); + } +} + +NameTree::Entry::~Entry() { + value.free(); +} + +void NameTree::addEntry(Entry *entry) +{ + if (length == size) { + if (length == 0) { + size = 8; + } else { + size *= 2; + } + entries = (Entry **) grealloc (entries, sizeof (Entry *) * size); + } + + entries[length] = entry; + ++length; +} + +void NameTree::init(XRef *xrefA, Object *tree) { + xref = xrefA; + parse(tree); +} + +void NameTree::parse(Object *tree) { + Object names; + Object kids, kid; + int i; + + if (!tree->isDict()) + return; + + // leaf node + if (tree->dictLookup("Names", &names)->isArray()) { + for (i = 0; i < names.arrayGetLength(); i += 2) { + NameTree::Entry *entry; + + entry = new Entry(names.getArray(), i); + addEntry(entry); + } + } + names.free(); + + // root or intermediate node + if (tree->dictLookup("Kids", &kids)->isArray()) { + for (i = 0; i < kids.arrayGetLength(); ++i) { + if (kids.arrayGet(i, &kid)->isDict()) + parse(&kid); + kid.free(); + } + } + kids.free(); +} + +int NameTree::Entry::cmp(const void *voidKey, const void *voidEntry) +{ + GooString *key = (GooString *) voidKey; + Entry *entry = *(NameTree::Entry **) voidEntry; + + return key->cmp(&entry->name); +} + +GBool NameTree::lookup(GooString *name, Object *obj) +{ + Entry **entry; + + entry = (Entry **) bsearch(name, entries, + length, sizeof(Entry *), Entry::cmp); + if (entry != NULL) { + (*entry)->value.fetch(xref, obj); + return gTrue; + } else { + printf("failed to look up %s\n", name->getCString()); + obj->initNull(); + return gFalse; + } +} + +Object NameTree::getValue(int index) +{ + if (index < length) { + return entries[index]->value; + } else { + return Object(); + } +} + +GooString *NameTree::getName(int index) +{ + if (index < length) { + return &entries[index]->name; + } else { + return NULL; + } +} + +GBool Catalog::labelToIndex(GooString *label, int *index) +{ + char *end; + + PageLabelInfo *pli = getPageLabelInfo(); + if (pli != NULL) { + if (!pli->labelToIndex(label, index)) + return gFalse; + } else { + *index = strtol(label->getCString(), &end, 10) - 1; + if (*end != '\0') + return gFalse; + } + + if (*index < 0 || *index >= getNumPages()) + return gFalse; + + return gTrue; +} + +GBool Catalog::indexToLabel(int index, GooString *label) +{ + char buffer[32]; + + if (index < 0 || index >= getNumPages()) + return gFalse; + + PageLabelInfo *pli = getPageLabelInfo(); + if (pli != NULL) { + return pli->indexToLabel(index, label); + } else { + snprintf(buffer, sizeof (buffer), "%d", index + 1); + label->append(buffer); + return gTrue; + } +} + +int Catalog::getNumPages() +{ + catalogLocker(); + if (numPages == -1) + { + Object catDict, pagesDict, obj; + + xref->getCatalog(&catDict); + if (!catDict.isDict()) { + error(errSyntaxError, -1, "Catalog object is wrong type ({0:s})", catDict.getTypeName()); + catDict.free(); + return 0; + } + catDict.dictLookup("Pages", &pagesDict); + catDict.free(); + + // This should really be isDict("Pages"), but I've seen at least one + // PDF file where the /Type entry is missing. + if (!pagesDict.isDict()) { + error(errSyntaxError, -1, "Top-level pages object is wrong type ({0:s})", + pagesDict.getTypeName()); + pagesDict.free(); + return 0; + } + + pagesDict.dictLookup("Count", &obj); + // some PDF files actually use real numbers here ("/Count 9.0") + if (!obj.isNum()) { + error(errSyntaxError, -1, "Page count in top-level pages object is wrong type ({0:s})", + obj.getTypeName()); + numPages = 0; + } else { + numPages = (int)obj.getNum(); + } + + obj.free(); + pagesDict.free(); + } + + return numPages; +} + +PageLabelInfo *Catalog::getPageLabelInfo() +{ + catalogLocker(); + if (!pageLabelInfo) { + Object catDict; + Object obj; + + xref->getCatalog(&catDict); + if (!catDict.isDict()) { + error(errSyntaxError, -1, "Catalog object is wrong type ({0:s})", catDict.getTypeName()); + catDict.free(); + return NULL; + } + + if (catDict.dictLookup("PageLabels", &obj)->isDict()) { + pageLabelInfo = new PageLabelInfo(&obj, getNumPages()); + } + obj.free(); + catDict.free(); + } + + return pageLabelInfo; +} + +Object *Catalog::getStructTreeRoot() +{ + catalogLocker(); + if (structTreeRoot.isNone()) + { + Object catDict; + + xref->getCatalog(&catDict); + if (catDict.isDict()) { + catDict.dictLookup("StructTreeRoot", &structTreeRoot); + } else { + error(errSyntaxError, -1, "Catalog object is wrong type ({0:s})", catDict.getTypeName()); + structTreeRoot.initNull(); + } + catDict.free(); + } + + return &structTreeRoot; +} + +Object *Catalog::getOutline() +{ + catalogLocker(); + if (outline.isNone()) + { + Object catDict; + + xref->getCatalog(&catDict); + if (catDict.isDict()) { + catDict.dictLookup("Outlines", &outline); + } else { + error(errSyntaxError, -1, "Catalog object is wrong type ({0:s})", catDict.getTypeName()); + outline.initNull(); + } + catDict.free(); + } + + return &outline; +} + +Object *Catalog::getDests() +{ + catalogLocker(); + if (dests.isNone()) + { + Object catDict; + + xref->getCatalog(&catDict); + if (catDict.isDict()) { + catDict.dictLookup("Dests", &dests); + } else { + error(errSyntaxError, -1, "Catalog object is wrong type ({0:s})", catDict.getTypeName()); + dests.initNull(); + } + catDict.free(); + } + + return &dests; +} + +Catalog::FormType Catalog::getFormType() +{ + Object xfa; + FormType res = NoForm; + + if (acroForm.isDict()) { + acroForm.dictLookup("XFA", &xfa); + if (xfa.isStream() || xfa.isArray()) { + res = XfaForm; + } else { + res = AcroForm; + } + xfa.free(); + } + + return res; +} + +Form *Catalog::getForm() +{ + catalogLocker(); + if (!form) { + if (acroForm.isDict()) { + form = new Form(doc, &acroForm); + // perform form-related loading after all widgets have been loaded + form->postWidgetsLoad(); + } + } + + return form; +} + +ViewerPreferences *Catalog::getViewerPreferences() +{ + catalogLocker(); + if (!viewerPrefs) { + if (viewerPreferences.isDict()) { + viewerPrefs = new ViewerPreferences(viewerPreferences.getDict()); + } + } + + return viewerPrefs; +} + +Object *Catalog::getNames() +{ + if (names.isNone()) + { + Object catDict; + + xref->getCatalog(&catDict); + if (catDict.isDict()) { + catDict.dictLookup("Names", &names); + } else { + error(errSyntaxError, -1, "Catalog object is wrong type ({0:s})", catDict.getTypeName()); + names.initNull(); + } + catDict.free(); + } + + return &names; +} + +NameTree *Catalog::getDestNameTree() +{ + if (!destNameTree) { + + destNameTree = new NameTree(); + + if (getNames()->isDict()) { + Object obj; + + getNames()->dictLookup("Dests", &obj); + destNameTree->init(xref, &obj); + obj.free(); + } + + } + + return destNameTree; +} + +NameTree *Catalog::getEmbeddedFileNameTree() +{ + if (!embeddedFileNameTree) { + + embeddedFileNameTree = new NameTree(); + + if (getNames()->isDict()) { + Object obj; + + getNames()->dictLookup("EmbeddedFiles", &obj); + embeddedFileNameTree->init(xref, &obj); + obj.free(); + } + + } + + return embeddedFileNameTree; +} + +NameTree *Catalog::getJSNameTree() +{ + if (!jsNameTree) { + + jsNameTree = new NameTree(); + + if (getNames()->isDict()) { + Object obj; + + getNames()->dictLookup("JavaScript", &obj); + jsNameTree->init(xref, &obj); + obj.free(); + } + + } + + return jsNameTree; +} + |