如何用poppler提取pdf索引/目录？ [英] how to extract pdf index/table-of-contents with poppler?

问题描述

我看到像okular和evince这样的pdf查看器能够很好地显示pdf文档（书）的索引，并链接到每个段落。
他们怎么能这样做？他们使用poppler库，我怎么能用poppler提取那个索引，或者一般？

I see that pdf-viewers like okular and evince are able to display the index of a pdf document (book) very well, with link to every paragraph. How can they do so? They use poppler library, how could I do extract that index with poppler, or in general?

推荐答案

它只停在第一级（递归需要更深入）

it just stops at first level (recursion needed to go more deeply)

toc=document->toc();

QDomElement docElem = toc->documentElement();

 QDomNode n = docElem.firstChild();
 while(!n.isNull()) {
     QDomElement e = n.toElement(); // try to convert the node to an element.
     if(!e.isNull()) {
         qDebug("elem %s\n",qPrintable(e.tagName())); // the node really is an element.

     }
     n = n.nextSibling();
 }

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