wireproto: define and implement HTTP handshake to upgrade protocol
When clients connect to repositories over HTTP, they issue a request
to the well-known URL "?cmd=capabilities" to fetch the repository
capabilities. This is the handshake portion of the HTTP protocol.
This commit defines a mechanism to use that HTTP request to return
information about modern server features.
If a client sends an X-HgUpgrade-* header containing a list of
client-supported API names, the server responds with a response
containing information about available services. This includes
the normal capabilities string. So if the server doesn't support
any newer services, the client can easily fall back.
By advertising supported services from clients, server operators
can see and log what client support exists in the wild. This will
also help with debugging.
The response contains the base path to API services. We know there
are potential issues with the <repo>/api/ URL space conflicting with
hgwebdir and subrepos. By making the API URL dynamic from the
perspective of the client, the URL for APIs is not subject to backwards
compatibility concerns - at least as long as a ?cmd=capabilities request
is made.
We've also defined the ``cbor`` client capability for the X-HgProto-*
header. This MUST be sent in order to get the modern response from
"?cmd=capabilities". During implementation, I initially always sent
an application/mercurial-cbor response. However, the handshake
mechanism will be more future compatible if the client is in charge
of which formats to request. We already perform content negotiation
from X-HgProto-*, so keying off this for the capabilities response
feels appropriate.
In addition, I initially used application/cbor. However, it is
conceivable that a non-Mercurial server could serve application/cbor.
To rule out this possibility, I've invented a new media type that
is Mercurial specific and can't be confused for generic CBOR.
Differential Revision: https://phab.mercurial-scm.org/D3242
#require pygments serve
$ cat <<EOF >> $HGRCPATH
> [extensions]
> highlight =
> [web]
> pygments_style = friendly
> highlightfiles = **.py and size('<100KB')
> EOF
$ hg init test
$ cd test
$ filterhtml () {
> sed -e "s/class=\"k\"/class=\"kn\"/g" \
> -e "s/class=\"mf\"/class=\"mi\"/g" \
> -e "s/class=\"vm\"/class=\"n\"/g" \
> -e "s/class=\"\([cs]\)[h12]\"/class=\"\1\"/g"
> }
create random Python file to exercise Pygments
$ cat <<EOF > primes.py
> """Fun with generators. Corresponding Haskell implementation:
>
> primes = 2 : sieve [3, 5..]
> where sieve (p:ns) = p : sieve [n | n <- ns, mod n p /= 0]
> """
>
> from itertools import dropwhile, ifilter, islice, count, chain
>
> def primes():
> """Generate all primes."""
> def sieve(ns):
> p = ns.next()
> # It is important to yield *here* in order to stop the
> # infinite recursion.
> yield p
> ns = ifilter(lambda n: n % p != 0, ns)
> for n in sieve(ns):
> yield n
>
> odds = ifilter(lambda i: i % 2 == 1, count())
> return chain([2], sieve(dropwhile(lambda n: n < 3, odds)))
>
> if __name__ == "__main__":
> import sys
> try:
> n = int(sys.argv[1])
> except (ValueError, IndexError):
> n = 10
> p = primes()
> print("The first %d primes: %s" % (n, list(islice(p, n))))
> EOF
$ echo >> primes.py # to test html markup with an empty line just before EOF
$ hg ci -Ama
adding primes.py
hg serve
$ hg serve -p $HGPORT -d -n test --pid-file=hg.pid -A access.log -E errors.log
$ cat hg.pid >> $DAEMON_PIDS
hgweb filerevision, html
$ (get-with-headers.py localhost:$HGPORT 'file/tip/primes.py') | filterhtml
200 Script output follows
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data-logurl="/log/tip/primes.py"
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<span id="l1"><span class="sd">"""Fun with generators. Corresponding Haskell implementation:</span></span><a href="#l1"></a>
<span id="l2"></span><a href="#l2"></a>
<span id="l3"><span class="sd">primes = 2 : sieve [3, 5..]</span></span><a href="#l3"></a>
<span id="l4"><span class="sd"> where sieve (p:ns) = p : sieve [n | n <- ns, mod n p /= 0]</span></span><a href="#l4"></a>
<span id="l5"><span class="sd">"""</span></span><a href="#l5"></a>
<span id="l6"></span><a href="#l6"></a>
<span id="l7"><span class="kn">from</span> <span class="nn">itertools</span> <span class="kn">import</span> <span class="n">dropwhile</span><span class="p">,</span> <span class="n">ifilter</span><span class="p">,</span> <span class="n">islice</span><span class="p">,</span> <span class="n">count</span><span class="p">,</span> <span class="n">chain</span></span><a href="#l7"></a>
<span id="l8"></span><a href="#l8"></a>
<span id="l9"><span class="kn">def</span> <span class="nf">primes</span><span class="p">():</span></span><a href="#l9"></a>
<span id="l10"> <span class="sd">"""Generate all primes."""</span></span><a href="#l10"></a>
<span id="l11"> <span class="kn">def</span> <span class="nf">sieve</span><span class="p">(</span><span class="n">ns</span><span class="p">):</span></span><a href="#l11"></a>
<span id="l12"> <span class="n">p</span> <span class="o">=</span> <span class="n">ns</span><span class="o">.</span><span class="n">next</span><span class="p">()</span></span><a href="#l12"></a>
<span id="l13"> <span class="c"># It is important to yield *here* in order to stop the</span></span><a href="#l13"></a>
<span id="l14"> <span class="c"># infinite recursion.</span></span><a href="#l14"></a>
<span id="l15"> <span class="kn">yield</span> <span class="n">p</span></span><a href="#l15"></a>
<span id="l16"> <span class="n">ns</span> <span class="o">=</span> <span class="n">ifilter</span><span class="p">(</span><span class="kn">lambda</span> <span class="n">n</span><span class="p">:</span> <span class="n">n</span> <span class="o">%</span> <span class="n">p</span> <span class="o">!=</span> <span class="mi">0</span><span class="p">,</span> <span class="n">ns</span><span class="p">)</span></span><a href="#l16"></a>
<span id="l17"> <span class="kn">for</span> <span class="n">n</span> <span class="ow">in</span> <span class="n">sieve</span><span class="p">(</span><span class="n">ns</span><span class="p">):</span></span><a href="#l17"></a>
<span id="l18"> <span class="kn">yield</span> <span class="n">n</span></span><a href="#l18"></a>
<span id="l19"></span><a href="#l19"></a>
<span id="l20"> <span class="n">odds</span> <span class="o">=</span> <span class="n">ifilter</span><span class="p">(</span><span class="kn">lambda</span> <span class="n">i</span><span class="p">:</span> <span class="n">i</span> <span class="o">%</span> <span class="mi">2</span> <span class="o">==</span> <span class="mi">1</span><span class="p">,</span> <span class="n">count</span><span class="p">())</span></span><a href="#l20"></a>
<span id="l21"> <span class="kn">return</span> <span class="n">chain</span><span class="p">([</span><span class="mi">2</span><span class="p">],</span> <span class="n">sieve</span><span class="p">(</span><span class="n">dropwhile</span><span class="p">(</span><span class="kn">lambda</span> <span class="n">n</span><span class="p">:</span> <span class="n">n</span> <span class="o"><</span> <span class="mi">3</span><span class="p">,</span> <span class="n">odds</span><span class="p">)))</span></span><a href="#l21"></a>
<span id="l22"></span><a href="#l22"></a>
<span id="l23"><span class="kn">if</span> <span class="n">__name__</span> <span class="o">==</span> <span class="s">"__main__"</span><span class="p">:</span></span><a href="#l23"></a>
<span id="l24"> <span class="kn">import</span> <span class="nn">sys</span></span><a href="#l24"></a>
<span id="l25"> <span class="kn">try</span><span class="p">:</span></span><a href="#l25"></a>
<span id="l26"> <span class="n">n</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">sys</span><span class="o">.</span><span class="n">argv</span><span class="p">[</span><span class="mi">1</span><span class="p">])</span></span><a href="#l26"></a>
<span id="l27"> <span class="kn">except</span> <span class="p">(</span><span class="ne">ValueError</span><span class="p">,</span> <span class="ne">IndexError</span><span class="p">):</span></span><a href="#l27"></a>
<span id="l28"> <span class="n">n</span> <span class="o">=</span> <span class="mi">10</span></span><a href="#l28"></a>
<span id="l29"> <span class="n">p</span> <span class="o">=</span> <span class="n">primes</span><span class="p">()</span></span><a href="#l29"></a>
<span id="l30"> <span class="kn">print</span><span class="p">(</span><span class="s">"The first </span><span class="si">%d</span><span class="s"> primes: </span><span class="si">%s</span><span class="s">"</span> <span class="o">%</span> <span class="p">(</span><span class="n">n</span><span class="p">,</span> <span class="nb">list</span><span class="p">(</span><span class="n">islice</span><span class="p">(</span><span class="n">p</span><span class="p">,</span> <span class="n">n</span><span class="p">))))</span></span><a href="#l30"></a>
<span id="l31"></span><a href="#l31"></a>
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<td class="source followlines-btn-parent"><a href="#l1"> 1</a> <span class="sd">"""Fun with generators. Corresponding Haskell implementation:</span></td>
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<td class="source followlines-btn-parent"><a href="#l2"> 2</a> </td>
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<td class="source followlines-btn-parent"><a href="#l3"> 3</a> <span class="sd">primes = 2 : sieve [3, 5..]</span></td>
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<td class="source followlines-btn-parent"><a href="#l4"> 4</a> <span class="sd"> where sieve (p:ns) = p : sieve [n | n <- ns, mod n p /= 0]</span></td>
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<td class="source followlines-btn-parent"><a href="#l5"> 5</a> <span class="sd">"""</span></td>
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<td class="source followlines-btn-parent"><a href="#l6"> 6</a> </td>
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<td class="source followlines-btn-parent"><a href="#l7"> 7</a> <span class="kn">from</span> <span class="nn">itertools</span> <span class="kn">import</span> <span class="n">dropwhile</span><span class="p">,</span> <span class="n">ifilter</span><span class="p">,</span> <span class="n">islice</span><span class="p">,</span> <span class="n">count</span><span class="p">,</span> <span class="n">chain</span></td>
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<td class="source followlines-btn-parent"><a href="#l8"> 8</a> </td>
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<td class="source followlines-btn-parent"><a href="#l9"> 9</a> <span class="kn">def</span> <span class="nf">primes</span><span class="p">():</span></td>
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<td class="source followlines-btn-parent"><a href="#l10"> 10</a> <span class="sd">"""Generate all primes."""</span></td>
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</div>
</td>
<td class="source followlines-btn-parent"><a href="#l11"> 11</a> <span class="kn">def</span> <span class="nf">sieve</span><span class="p">(</span><span class="n">ns</span><span class="p">):</span></td>
</tr>
<tr id="l12" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/f4fca47b67e6/primes.py#l12">
f4fca47b67e6</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/f4fca47b67e6/primes.py">diff</a>
<a href="/rev/f4fca47b67e6">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l12"> 12</a> <span class="n">p</span> <span class="o">=</span> <span class="n">ns</span><span class="o">.</span><span class="n">next</span><span class="p">()</span></td>
</tr>
<tr id="l13" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/f4fca47b67e6/primes.py#l13">
f4fca47b67e6</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/f4fca47b67e6/primes.py">diff</a>
<a href="/rev/f4fca47b67e6">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l13"> 13</a> <span class="c"># It is important to yield *here* in order to stop the</span></td>
</tr>
<tr id="l14" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/f4fca47b67e6/primes.py#l14">
f4fca47b67e6</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/f4fca47b67e6/primes.py">diff</a>
<a href="/rev/f4fca47b67e6">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l14"> 14</a> <span class="c"># infinite recursion.</span></td>
</tr>
<tr id="l15" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/f4fca47b67e6/primes.py#l15">
f4fca47b67e6</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/f4fca47b67e6/primes.py">diff</a>
<a href="/rev/f4fca47b67e6">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l15"> 15</a> <span class="kn">yield</span> <span class="n">p</span></td>
</tr>
<tr id="l16" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/f4fca47b67e6/primes.py#l16">
f4fca47b67e6</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/f4fca47b67e6/primes.py">diff</a>
<a href="/rev/f4fca47b67e6">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l16"> 16</a> <span class="n">ns</span> <span class="o">=</span> <span class="n">ifilter</span><span class="p">(</span><span class="kn">lambda</span> <span class="n">n</span><span class="p">:</span> <span class="n">n</span> <span class="o">%</span> <span class="n">p</span> <span class="o">!=</span> <span class="mi">0</span><span class="p">,</span> <span class="n">ns</span><span class="p">)</span></td>
</tr>
<tr id="l17" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/f4fca47b67e6/primes.py#l17">
f4fca47b67e6</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/f4fca47b67e6/primes.py">diff</a>
<a href="/rev/f4fca47b67e6">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l17"> 17</a> <span class="kn">for</span> <span class="n">n</span> <span class="ow">in</span> <span class="n">sieve</span><span class="p">(</span><span class="n">ns</span><span class="p">):</span></td>
</tr>
<tr id="l18" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/f4fca47b67e6/primes.py#l18">
f4fca47b67e6</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/f4fca47b67e6/primes.py">diff</a>
<a href="/rev/f4fca47b67e6">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l18"> 18</a> <span class="kn">yield</span> <span class="n">n</span></td>
</tr>
<tr id="l19" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/f4fca47b67e6/primes.py#l19">
f4fca47b67e6</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/f4fca47b67e6/primes.py">diff</a>
<a href="/rev/f4fca47b67e6">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l19"> 19</a> </td>
</tr>
<tr id="l20" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/f4fca47b67e6/primes.py#l20">
f4fca47b67e6</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/f4fca47b67e6/primes.py">diff</a>
<a href="/rev/f4fca47b67e6">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l20"> 20</a> <span class="n">odds</span> <span class="o">=</span> <span class="n">ifilter</span><span class="p">(</span><span class="kn">lambda</span> <span class="n">i</span><span class="p">:</span> <span class="n">i</span> <span class="o">%</span> <span class="mi">2</span> <span class="o">==</span> <span class="mi">1</span><span class="p">,</span> <span class="n">count</span><span class="p">())</span></td>
</tr>
<tr id="l21" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/f4fca47b67e6/primes.py#l21">
f4fca47b67e6</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/f4fca47b67e6/primes.py">diff</a>
<a href="/rev/f4fca47b67e6">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l21"> 21</a> <span class="kn">return</span> <span class="n">chain</span><span class="p">([</span><span class="mi">2</span><span class="p">],</span> <span class="n">sieve</span><span class="p">(</span><span class="n">dropwhile</span><span class="p">(</span><span class="kn">lambda</span> <span class="n">n</span><span class="p">:</span> <span class="n">n</span> <span class="o"><</span> <span class="mi">3</span><span class="p">,</span> <span class="n">odds</span><span class="p">)))</span></td>
</tr>
<tr id="l22" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/f4fca47b67e6/primes.py#l22">
f4fca47b67e6</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/f4fca47b67e6/primes.py">diff</a>
<a href="/rev/f4fca47b67e6">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l22"> 22</a> </td>
</tr>
<tr id="l23" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/f4fca47b67e6/primes.py#l23">
f4fca47b67e6</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/f4fca47b67e6/primes.py">diff</a>
<a href="/rev/f4fca47b67e6">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l23"> 23</a> <span class="kn">if</span> <span class="n">__name__</span> <span class="o">==</span> <span class="s">"__main__"</span><span class="p">:</span></td>
</tr>
<tr id="l24" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/f4fca47b67e6/primes.py#l24">
f4fca47b67e6</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/f4fca47b67e6/primes.py">diff</a>
<a href="/rev/f4fca47b67e6">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l24"> 24</a> <span class="kn">import</span> <span class="nn">sys</span></td>
</tr>
<tr id="l25" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/f4fca47b67e6/primes.py#l25">
f4fca47b67e6</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/f4fca47b67e6/primes.py">diff</a>
<a href="/rev/f4fca47b67e6">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l25"> 25</a> <span class="kn">try</span><span class="p">:</span></td>
</tr>
<tr id="l26" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/f4fca47b67e6/primes.py#l26">
f4fca47b67e6</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/f4fca47b67e6/primes.py">diff</a>
<a href="/rev/f4fca47b67e6">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l26"> 26</a> <span class="n">n</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">sys</span><span class="o">.</span><span class="n">argv</span><span class="p">[</span><span class="mi">1</span><span class="p">])</span></td>
</tr>
<tr id="l27" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/f4fca47b67e6/primes.py#l27">
f4fca47b67e6</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/f4fca47b67e6/primes.py">diff</a>
<a href="/rev/f4fca47b67e6">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l27"> 27</a> <span class="kn">except</span> <span class="p">(</span><span class="ne">ValueError</span><span class="p">,</span> <span class="ne">IndexError</span><span class="p">):</span></td>
</tr>
<tr id="l28" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/f4fca47b67e6/primes.py#l28">
f4fca47b67e6</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/f4fca47b67e6/primes.py">diff</a>
<a href="/rev/f4fca47b67e6">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l28"> 28</a> <span class="n">n</span> <span class="o">=</span> <span class="mi">10</span></td>
</tr>
<tr id="l29" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/f4fca47b67e6/primes.py#l29">
f4fca47b67e6</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/f4fca47b67e6/primes.py">diff</a>
<a href="/rev/f4fca47b67e6">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l29"> 29</a> <span class="n">p</span> <span class="o">=</span> <span class="n">primes</span><span class="p">()</span></td>
</tr>
<tr id="l30" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/f4fca47b67e6/primes.py#l30">
f4fca47b67e6</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/f4fca47b67e6/primes.py">diff</a>
<a href="/rev/f4fca47b67e6">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l30"> 30</a> <span class="kn">print</span><span class="p">(</span><span class="s">"The first </span><span class="si">%d</span><span class="s"> primes: </span><span class="si">%s</span><span class="s">"</span> <span class="o">%</span> <span class="p">(</span><span class="n">n</span><span class="p">,</span> <span class="nb">list</span><span class="p">(</span><span class="n">islice</span><span class="p">(</span><span class="n">p</span><span class="p">,</span> <span class="n">n</span><span class="p">))))</span></td>
</tr>
<tr id="l31" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/f4fca47b67e6/primes.py#l31">
f4fca47b67e6</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/f4fca47b67e6/primes.py">diff</a>
<a href="/rev/f4fca47b67e6">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l31"> 31</a> </td>
</tr>
</tbody>
</table>
</div>
</div>
</div>
<script type="text/javascript" src="/static/followlines.js"></script>
</body>
</html>
hgweb fileannotate, raw
$ (get-with-headers.py localhost:$HGPORT 'annotate/tip/primes.py?style=raw') \
> | sed "s/test@//" > a
$ echo "200 Script output follows" > b
$ echo "" >> b
$ echo "" >> b
$ hg annotate "primes.py" >> b
$ echo "" >> b
$ echo "" >> b
$ echo "" >> b
$ echo "" >> b
$ cmp b a || diff -u b a
hgweb filerevision, raw
$ (get-with-headers.py localhost:$HGPORT 'file/tip/primes.py?style=raw') \
> > a
$ echo "200 Script output follows" > b
$ echo "" >> b
$ hg cat primes.py >> b
$ cmp b a || diff -u b a
hgweb highlightcss friendly
$ get-with-headers.py localhost:$HGPORT 'highlightcss' > out
$ head -n 4 out
200 Script output follows
/* pygments_style = friendly */
$ rm out
errors encountered
$ cat errors.log
$ killdaemons.py
Change the pygments style
$ cat > .hg/hgrc <<EOF
> [web]
> pygments_style = fruity
> EOF
hg serve again
$ hg serve -p $HGPORT -d -n test --pid-file=hg.pid -A access.log -E errors.log
$ cat hg.pid >> $DAEMON_PIDS
hgweb highlightcss fruity
$ get-with-headers.py localhost:$HGPORT 'highlightcss' > out
$ head -n 4 out
200 Script output follows
/* pygments_style = fruity */
$ rm out
errors encountered
$ cat errors.log
$ killdaemons.py
only highlight C source files
$ cat > .hg/hgrc <<EOF
> [web]
> highlightfiles = **.c
> EOF
hg serve again
$ hg serve -p $HGPORT -d -n test --pid-file=hg.pid -A access.log -E errors.log
$ cat hg.pid >> $DAEMON_PIDS
test that fileset in highlightfiles works and primes.py is not highlighted
$ get-with-headers.py localhost:$HGPORT 'file/tip/primes.py' | grep 'id="l11"'
<span id="l11"> def sieve(ns):</span><a href="#l11"></a>
errors encountered
$ cat errors.log
$ cd ..
$ hg init eucjp
$ cd eucjp
$ $PYTHON -c 'print("\265\376")' >> eucjp.txt # Japanese kanji "Kyo"
$ hg ci -Ama
adding eucjp.txt
$ hgserveget () {
> killdaemons.py
> echo % HGENCODING="$1" hg serve
> HGENCODING="$1" hg serve -p $HGPORT -d -n test --pid-file=hg.pid -E errors.log
> cat hg.pid >> $DAEMON_PIDS
>
> echo % hgweb filerevision, html
> get-with-headers.py localhost:$HGPORT "file/tip/$2" \
> | grep '<div class="parity0 source">'
> echo % errors encountered
> cat errors.log
> }
$ hgserveget euc-jp eucjp.txt
% HGENCODING=euc-jp hg serve
% hgweb filerevision, html
% errors encountered
$ hgserveget utf-8 eucjp.txt
% HGENCODING=utf-8 hg serve
% hgweb filerevision, html
% errors encountered
$ hgserveget us-ascii eucjp.txt
% HGENCODING=us-ascii hg serve
% hgweb filerevision, html
% errors encountered
We attempt to highlight unknown files by default
$ killdaemons.py
$ cat > .hg/hgrc << EOF
> [web]
> highlightfiles = **
> EOF
$ cat > unknownfile << EOF
> #!$PYTHON
> def foo():
> pass
> EOF
$ hg add unknownfile
$ hg commit -m unknown unknownfile
$ hg serve -p $HGPORT -d -n test --pid-file=hg.pid
$ cat hg.pid >> $DAEMON_PIDS
$ get-with-headers.py localhost:$HGPORT 'file/tip/unknownfile' | grep l2
<span id="l2"><span class="k">def</span> <span class="nf">foo</span><span class="p">():</span></span><a href="#l2"></a>
We can prevent Pygments from falling back to a non filename-based
detection mode
$ cat > .hg/hgrc << EOF
> [web]
> highlightfiles = **
> highlightonlymatchfilename = true
> EOF
$ killdaemons.py
$ hg serve -p $HGPORT -d -n test --pid-file=hg.pid
$ cat hg.pid >> $DAEMON_PIDS
$ get-with-headers.py localhost:$HGPORT 'file/tip/unknownfile' | grep l2
<span id="l2">def foo():</span><a href="#l2"></a>
$ cd ..