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Delay loading of the Info object and clean up the pdfioinfo example (Issue #87)

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Michael R Sweet
2025-01-17 16:50:30 -05:00
parent fbd61d1fe9
commit 3bc041e6d3
6 changed files with 78 additions and 29 deletions
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26
doc/pdfio.html
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@ -1161,9 +1161,11 @@ main(<span class="reserved">int</span> argc, <span clas
{
<span class="reserved">const</span> <span class="reserved">char</span> *filename; <span class="comment">// PDF filename</span>
pdfio_file_t *pdf; <span class="comment">// PDF file</span>
<span class="reserved">const</span> <span class="reserved">char</span> *author; <span class="comment">// Author name</span>
time_t creation_date; <span class="comment">// Creation date</span>
<span class="reserved">struct</span> tm *creation_tm; <span class="comment">// Creation date/time information</span>
<span class="reserved">char</span> creation_text[<span class="number">256</span>]; <span class="comment">// Creation date/time as a string</span>
<span class="reserved">const</span> <span class="reserved">char</span> *title; <span class="comment">// Title</span>
<span class="comment">// Get the filename from the command-line...</span>
@ -1181,15 +1183,25 @@ main(<span class="reserved">int</span> argc, <span clas
<span class="reserved">if</span> (pdf == NULL)
<span class="reserved">return</span> (<span class="number">1</span>);
<span class="comment">// Get the title and author...</span>
author = pdfioFileGetAuthor(pdf);
title = pdfioFileGetTitle(pdf);
<span class="comment">// Get the creation date and convert to a string...</span>
creation_date = pdfioFileGetCreationDate(pdf);
creation_tm = localtime(&amp;creation_date);
strftime(creation_text, <span class="reserved">sizeof</span>(creation_text), <span class="string">&quot;%c&quot;</span>, creation_tm);
<span class="reserved">if</span> ((creation_date = pdfioFileGetCreationDate(pdf)) &gt; <span class="number">0</span>)
{
creation_tm = localtime(&amp;creation_date);
strftime(creation_text, <span class="reserved">sizeof</span>(creation_text), <span class="string">&quot;%c&quot;</span>, creation_tm);
}
<span class="reserved">else</span>
{
snprintf(creation_text, <span class="reserved">sizeof</span>(creation_text), <span class="string">&quot;-- not set --&quot;</span>);
}
<span class="comment">// Print file information to stdout...</span>
printf(<span class="string">&quot;%s:\n&quot;</span>, filename);
printf(<span class="string">&quot; Title: %s\n&quot;</span>, pdfioFileGetTitle(pdf));
printf(<span class="string">&quot; Author: %s\n&quot;</span>, pdfioFileGetAuthor(pdf));
printf(<span class="string">&quot; Title: %s\n&quot;</span>, title ? title : <span class="string">&quot;-- not set --&quot;</span>);
printf(<span class="string">&quot; Author: %s\n&quot;</span>, author ? author : <span class="string">&quot;-- not set --&quot;</span>);
printf(<span class="string">&quot; Created On: %s\n&quot;</span>, creation_text);
printf(<span class="string">&quot; Number Pages: %u\n&quot;</span>, (<span class="reserved">unsigned</span>)pdfioFileGetNumPages(pdf));
@ -2022,13 +2034,13 @@ dd-&gt;y -= margin_top + lineheight;
dd-&gt;y -= lineheight;
}
</code></pre>
<p>We then loops through the fragments for the current line, drawing checkboxes, images, and text as needed. When a hyperlink is present, we add the link to the <code>links</code> array in the <code>docdata_t</code> structure, mapping &quot;@&quot; and &quot;@@&quot; to an internal link corresponding to the linked text:</p>
<p>We then loops through the fragments for the current line, drawing checkboxes, images, and text as needed. Wh<EFBFBD>n a hyperlink is present, we add the link to the <code>links</code> array in the <code>docdata_t</code> structure, mapping &quot;@&quot; and &quot;@@&quot; to an internal link corresponding to the linked text:</p>
<pre><code class="language-c"><span class="reserved">if</span> (frag-&gt;url &amp;&amp; dd-&gt;num_links &lt; DOCLINK_MAX)
{
doclink_t *l = dd-&gt;links + dd-&gt;num_links;
<span class="comment">// Pointer to this link record</span>
<EFBFBD><span class="reserved">if</span> (!strcmp(frag-&gt;url, <span class="string">&quot;@&quot;</span>))
<span class="reserved">if</span> (!strcmp(frag-&gt;url, <span class="string">&quot;@&quot;</span>))
{
<span class="comment">// Use mapped text as link target...</span>
<span class="reserved">char</span> targetlink[<span class="number">129</span>]; <span class="comment">// Targeted link</span>