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<th class=docs><h1>fetch.c</h1></th>
<th class=code></th>
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<tr id='section-1'>
<td class=docs>
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<td class=code>
<div class='highlight'><pre><span></span><span class="cp">#include</span> <span class="cpf">"common.h"</span><span class="cp"></span>
<span class="k">static</span> <span class="kt">int</span> <span class="nf">progress_cb</span><span class="p">(</span><span class="k">const</span> <span class="kt">char</span> <span class="o">*</span><span class="n">str</span><span class="p">,</span> <span class="kt">int</span> <span class="n">len</span><span class="p">,</span> <span class="kt">void</span> <span class="o">*</span><span class="n">data</span><span class="p">)</span>
<span class="p">{</span>
<span class="p">(</span><span class="kt">void</span><span class="p">)</span><span class="n">data</span><span class="p">;</span>
<span class="n">printf</span><span class="p">(</span><span class="s">"remote: %.*s"</span><span class="p">,</span> <span class="n">len</span><span class="p">,</span> <span class="n">str</span><span class="p">);</span>
<span class="n">fflush</span><span class="p">(</span><span class="n">stdout</span><span class="p">);</span> <span class="cm">/* We don't have the \n to force the flush */</span>
<span class="k">return</span> <span class="mi">0</span><span class="p">;</span>
<span class="p">}</span></pre></div>
</td>
</tr>
<tr id='section-2'>
<td class=docs>
<div class="pilwrap">
<a class="pilcrow" href="#section-2">¶</a>
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<p>This function gets called for each remote-tracking branch that gets
updated. The message we output depends on whether it's a new one or
an update.</p>
</td>
<td class=code>
<div class='highlight'><pre><span class="k">static</span> <span class="kt">int</span> <span class="nf">update_cb</span><span class="p">(</span><span class="k">const</span> <span class="kt">char</span> <span class="o">*</span><span class="n">refname</span><span class="p">,</span> <span class="k">const</span> <span class="n">git_oid</span> <span class="o">*</span><span class="n">a</span><span class="p">,</span> <span class="k">const</span> <span class="n">git_oid</span> <span class="o">*</span><span class="n">b</span><span class="p">,</span> <span class="kt">void</span> <span class="o">*</span><span class="n">data</span><span class="p">)</span>
<span class="p">{</span>
<span class="kt">char</span> <span class="n">a_str</span><span class="p">[</span><span class="n">GIT_OID_HEXSZ</span><span class="o">+</span><span class="mi">1</span><span class="p">],</span> <span class="n">b_str</span><span class="p">[</span><span class="n">GIT_OID_HEXSZ</span><span class="o">+</span><span class="mi">1</span><span class="p">];</span>
<span class="p">(</span><span class="kt">void</span><span class="p">)</span><span class="n">data</span><span class="p">;</span>
<span class="n"><a name="git_oid_fmt-1" class="fnlink" href="../../#HEAD/group/oid/git_oid_fmt">git_oid_fmt</a></span><span class="p">(</span><span class="n">b_str</span><span class="p">,</span> <span class="n">b</span><span class="p">);</span>
<span class="n">b_str</span><span class="p">[</span><span class="n">GIT_OID_HEXSZ</span><span class="p">]</span> <span class="o">=</span> <span class="sc">'\0'</span><span class="p">;</span>
<span class="k">if</span> <span class="p">(</span><span class="n"><a name="git_oid_is_zero-3" class="fnlink" href="../../#HEAD/group/oid/git_oid_is_zero">git_oid_is_zero</a></span><span class="p">(</span><span class="n">a</span><span class="p">))</span> <span class="p">{</span>
<span class="n">printf</span><span class="p">(</span><span class="s">"[new] %.20s %s</span><span class="se">\n</span><span class="s">"</span><span class="p">,</span> <span class="n">b_str</span><span class="p">,</span> <span class="n">refname</span><span class="p">);</span>
<span class="p">}</span> <span class="k">else</span> <span class="p">{</span>
<span class="n"><a name="git_oid_fmt-2" class="fnlink" href="../../#HEAD/group/oid/git_oid_fmt">git_oid_fmt</a></span><span class="p">(</span><span class="n">a_str</span><span class="p">,</span> <span class="n">a</span><span class="p">);</span>
<span class="n">a_str</span><span class="p">[</span><span class="n">GIT_OID_HEXSZ</span><span class="p">]</span> <span class="o">=</span> <span class="sc">'\0'</span><span class="p">;</span>
<span class="n">printf</span><span class="p">(</span><span class="s">"[updated] %.10s..%.10s %s</span><span class="se">\n</span><span class="s">"</span><span class="p">,</span> <span class="n">a_str</span><span class="p">,</span> <span class="n">b_str</span><span class="p">,</span> <span class="n">refname</span><span class="p">);</span>
<span class="p">}</span>
<span class="k">return</span> <span class="mi">0</span><span class="p">;</span>
<span class="p">}</span></pre></div>
</td>
</tr>
<tr id='section-3'>
<td class=docs>
<div class="pilwrap">
<a class="pilcrow" href="#section-3">¶</a>
</div>
<p>This gets called during the download and indexing. Here we show
processed and total objects in the pack and the amount of received
data. Most frontends will probably want to show a percentage and
the download rate.</p>
</td>
<td class=code>
<div class='highlight'><pre><span class="k">static</span> <span class="kt">int</span> <span class="nf">transfer_progress_cb</span><span class="p">(</span><span class="k">const</span> <span class="n">git_indexer_progress</span> <span class="o">*</span><span class="n">stats</span><span class="p">,</span> <span class="kt">void</span> <span class="o">*</span><span class="n">payload</span><span class="p">)</span>
<span class="p">{</span>
<span class="p">(</span><span class="kt">void</span><span class="p">)</span><span class="n">payload</span><span class="p">;</span>
<span class="k">if</span> <span class="p">(</span><span class="n">stats</span><span class="o">-></span><span class="n">received_objects</span> <span class="o">==</span> <span class="n">stats</span><span class="o">-></span><span class="n">total_objects</span><span class="p">)</span> <span class="p">{</span>
<span class="n">printf</span><span class="p">(</span><span class="s">"Resolving deltas %u/%u</span><span class="se">\r</span><span class="s">"</span><span class="p">,</span>
<span class="n">stats</span><span class="o">-></span><span class="n">indexed_deltas</span><span class="p">,</span> <span class="n">stats</span><span class="o">-></span><span class="n">total_deltas</span><span class="p">);</span>
<span class="p">}</span> <span class="k">else</span> <span class="k">if</span> <span class="p">(</span><span class="n">stats</span><span class="o">-></span><span class="n">total_objects</span> <span class="o">></span> <span class="mi">0</span><span class="p">)</span> <span class="p">{</span>
<span class="n">printf</span><span class="p">(</span><span class="s">"Received %u/%u objects (%u) in %"</span> <span class="n">PRIuZ</span> <span class="s">" bytes</span><span class="se">\r</span><span class="s">"</span><span class="p">,</span>
<span class="n">stats</span><span class="o">-></span><span class="n">received_objects</span><span class="p">,</span> <span class="n">stats</span><span class="o">-></span><span class="n">total_objects</span><span class="p">,</span>
<span class="n">stats</span><span class="o">-></span><span class="n">indexed_objects</span><span class="p">,</span> <span class="n">stats</span><span class="o">-></span><span class="n">received_bytes</span><span class="p">);</span>
<span class="p">}</span>
<span class="k">return</span> <span class="mi">0</span><span class="p">;</span>
<span class="p">}</span></pre></div>
</td>
</tr>
<tr id='section-4'>
<td class=docs>
<div class="pilwrap">
<a class="pilcrow" href="#section-4">¶</a>
</div>
<p>Entry point for this command</p>
</td>
<td class=code>
<div class='highlight'><pre><span class="kt">int</span> <span class="nf">lg2_fetch</span><span class="p">(</span><span class="n">git_repository</span> <span class="o">*</span><span class="n">repo</span><span class="p">,</span> <span class="kt">int</span> <span class="n">argc</span><span class="p">,</span> <span class="kt">char</span> <span class="o">**</span><span class="n">argv</span><span class="p">)</span>
<span class="p">{</span>
<span class="n">git_remote</span> <span class="o">*</span><span class="n">remote</span> <span class="o">=</span> <span class="nb">NULL</span><span class="p">;</span>
<span class="k">const</span> <span class="n">git_indexer_progress</span> <span class="o">*</span><span class="n">stats</span><span class="p">;</span>
<span class="n">git_fetch_options</span> <span class="n">fetch_opts</span> <span class="o">=</span> <span class="n">GIT_FETCH_OPTIONS_INIT</span><span class="p">;</span>
<span class="k">if</span> <span class="p">(</span><span class="n">argc</span> <span class="o"><</span> <span class="mi">2</span><span class="p">)</span> <span class="p">{</span>
<span class="n">fprintf</span><span class="p">(</span><span class="n">stderr</span><span class="p">,</span> <span class="s">"usage: %s fetch <repo></span><span class="se">\n</span><span class="s">"</span><span class="p">,</span> <span class="n">argv</span><span class="p">[</span><span class="o">-</span><span class="mi">1</span><span class="p">]);</span>
<span class="k">return</span> <span class="n">EXIT_FAILURE</span><span class="p">;</span>
<span class="p">}</span>
<span class="cm">/* Figure out whether it's a named remote or a URL */</span>
<span class="n">printf</span><span class="p">(</span><span class="s">"Fetching %s for repo %p</span><span class="se">\n</span><span class="s">"</span><span class="p">,</span> <span class="n">argv</span><span class="p">[</span><span class="mi">1</span><span class="p">],</span> <span class="n">repo</span><span class="p">);</span>
<span class="k">if</span> <span class="p">(</span><span class="n"><a name="git_remote_lookup-5" class="fnlink" href="../../#HEAD/group/remote/git_remote_lookup">git_remote_lookup</a></span><span class="p">(</span><span class="o">&</span><span class="n">remote</span><span class="p">,</span> <span class="n">repo</span><span class="p">,</span> <span class="n">argv</span><span class="p">[</span><span class="mi">1</span><span class="p">])</span> <span class="o"><</span> <span class="mi">0</span><span class="p">)</span>
<span class="k">if</span> <span class="p">(</span><span class="n"><a name="git_remote_create_anonymous-4" class="fnlink" href="../../#HEAD/group/remote/git_remote_create_anonymous">git_remote_create_anonymous</a></span><span class="p">(</span><span class="o">&</span><span class="n">remote</span><span class="p">,</span> <span class="n">repo</span><span class="p">,</span> <span class="n">argv</span><span class="p">[</span><span class="mi">1</span><span class="p">])</span> <span class="o"><</span> <span class="mi">0</span><span class="p">)</span>
<span class="k">goto</span> <span class="n">on_error</span><span class="p">;</span>
<span class="cm">/* Set up the callbacks (only update_tips for now) */</span>
<span class="n">fetch_opts</span><span class="p">.</span><span class="n">callbacks</span><span class="p">.</span><span class="n">update_tips</span> <span class="o">=</span> <span class="o">&</span><span class="n">update_cb</span><span class="p">;</span>
<span class="n">fetch_opts</span><span class="p">.</span><span class="n">callbacks</span><span class="p">.</span><span class="n">sideband_progress</span> <span class="o">=</span> <span class="o">&</span><span class="n">progress_cb</span><span class="p">;</span>
<span class="n">fetch_opts</span><span class="p">.</span><span class="n">callbacks</span><span class="p">.</span><span class="n">transfer_progress</span> <span class="o">=</span> <span class="n">transfer_progress_cb</span><span class="p">;</span>
<span class="n">fetch_opts</span><span class="p">.</span><span class="n">callbacks</span><span class="p">.</span><span class="n">credentials</span> <span class="o">=</span> <span class="n">cred_acquire_cb</span><span class="p">;</span></pre></div>
</td>
</tr>
<tr id='section-5'>
<td class=docs>
<div class="pilwrap">
<a class="pilcrow" href="#section-5">¶</a>
</div>
<p>Perform the fetch with the configured refspecs from the
config. Update the reflog for the updated references with
"fetch".</p>
</td>
<td class=code>
<div class='highlight'><pre> <span class="k">if</span> <span class="p">(</span><span class="n"><a name="git_remote_fetch-8" class="fnlink" href="../../#HEAD/group/remote/git_remote_fetch">git_remote_fetch</a></span><span class="p">(</span><span class="n">remote</span><span class="p">,</span> <span class="nb">NULL</span><span class="p">,</span> <span class="o">&</span><span class="n">fetch_opts</span><span class="p">,</span> <span class="s">"fetch"</span><span class="p">)</span> <span class="o"><</span> <span class="mi">0</span><span class="p">)</span>
<span class="k">goto</span> <span class="n">on_error</span><span class="p">;</span></pre></div>
</td>
</tr>
<tr id='section-6'>
<td class=docs>
<div class="pilwrap">
<a class="pilcrow" href="#section-6">¶</a>
</div>
<p>If there are local objects (we got a thin pack), then tell
the user how many objects we saved from having to cross the
network.</p>
</td>
<td class=code>
<div class='highlight'><pre> <span class="n">stats</span> <span class="o">=</span> <span class="n"><a name="git_remote_stats-9" class="fnlink" href="../../#HEAD/group/remote/git_remote_stats">git_remote_stats</a></span><span class="p">(</span><span class="n">remote</span><span class="p">);</span>
<span class="k">if</span> <span class="p">(</span><span class="n">stats</span><span class="o">-></span><span class="n">local_objects</span> <span class="o">></span> <span class="mi">0</span><span class="p">)</span> <span class="p">{</span>
<span class="n">printf</span><span class="p">(</span><span class="s">"</span><span class="se">\r</span><span class="s">Received %u/%u objects in %"</span> <span class="n">PRIuZ</span> <span class="s">" bytes (used %u local objects)</span><span class="se">\n</span><span class="s">"</span><span class="p">,</span>
<span class="n">stats</span><span class="o">-></span><span class="n">indexed_objects</span><span class="p">,</span> <span class="n">stats</span><span class="o">-></span><span class="n">total_objects</span><span class="p">,</span> <span class="n">stats</span><span class="o">-></span><span class="n">received_bytes</span><span class="p">,</span> <span class="n">stats</span><span class="o">-></span><span class="n">local_objects</span><span class="p">);</span>
<span class="p">}</span> <span class="k">else</span><span class="p">{</span>
<span class="n">printf</span><span class="p">(</span><span class="s">"</span><span class="se">\r</span><span class="s">Received %u/%u objects in %"</span> <span class="n">PRIuZ</span> <span class="s">"bytes</span><span class="se">\n</span><span class="s">"</span><span class="p">,</span>
<span class="n">stats</span><span class="o">-></span><span class="n">indexed_objects</span><span class="p">,</span> <span class="n">stats</span><span class="o">-></span><span class="n">total_objects</span><span class="p">,</span> <span class="n">stats</span><span class="o">-></span><span class="n">received_bytes</span><span class="p">);</span>
<span class="p">}</span>
<span class="n"><a name="git_remote_free-6" class="fnlink" href="../../#HEAD/group/remote/git_remote_free">git_remote_free</a></span><span class="p">(</span><span class="n">remote</span><span class="p">);</span>
<span class="k">return</span> <span class="mi">0</span><span class="p">;</span>
<span class="nl">on_error</span><span class="p">:</span>
<span class="n"><a name="git_remote_free-7" class="fnlink" href="../../#HEAD/group/remote/git_remote_free">git_remote_free</a></span><span class="p">(</span><span class="n">remote</span><span class="p">);</span>
<span class="k">return</span> <span class="o">-</span><span class="mi">1</span><span class="p">;</span>
<span class="p">}</span></pre></div>
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