procutil: make stream detection in make_line_buffered more correct and strict
In make_line_buffered(), we don’t want to wrap the stream if we know that lines
get flushed to the underlying raw stream already.
Previously, the heuristic was too optimistic. It assumed that any stream which
is not an instance of io.BufferedIOBase doesn’t need wrapping. However, there
are buffered streams that aren’t instances of io.BufferedIOBase, like
Mercurial’s own winstdout.
The new logic is different in two ways:
First, only for the check, if unwraps any combination of WriteAllWrapper and
winstdout.
Second, it skips wrapping the stream only if it is an instance of io.RawIOBase
(or already wrapped). If it is an instance of io.BufferedIOBase, it gets
wrapped. In any other case, the function raises an exception. This ensures
that, if an unknown stream is passed or we add another wrapper in the future,
we don’t wrap the stream if it’s already line buffered or not wrap the stream
if it’s not line buffered. In fact, this was already helpful during development
of this change. Without it, I possibly would have forgot that WriteAllWrapper
needs to be ignored for the check, leading to unnecessary wrapping if stdout is
unbuffered.
The alternative would have been to always wrap unknown streams. However, I
don’t think that anyone would benefit from being less strict. We can expect
streams from the standard library to be subclassing either io.RawIOBase or
io.BufferedIOBase, so running Mercurial in the standard way should not regress
by this change. Py2exe might replace sys.stdout and sys.stderr, but that
currently breaks Mercurial anyway and also these streams don’t claim to be
interactive, so this function is not called for them.
#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 <<NO_CHECK_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]
> """
>
> import itertools
>
> 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 = itertools.ifilter(lambda n: n % p != 0, ns)
> for n in sieve(ns):
> yield n
>
> odds = itertools.ifilter(lambda i: i % 2 == 1, itertools.count())
> dropwhile = itertools.dropwhile
> return itertools.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(itertools.islice(p, n))))
> NO_CHECK_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
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US">
<head>
<link rel="icon" href="/static/hgicon.png" type="image/png" />
<meta name="robots" content="index, nofollow" />
<link rel="stylesheet" href="/static/style-paper.css" type="text/css" />
<script type="text/javascript" src="/static/mercurial.js"></script>
<link rel="stylesheet" href="/highlightcss" type="text/css" />
<title>test: 687f2d169546 primes.py</title>
</head>
<body>
<div class="container">
<div class="menu">
<div class="logo">
<a href="https://mercurial-scm.org/">
<img src="/static/hglogo.png" alt="mercurial" /></a>
</div>
<ul>
<li><a href="/shortlog/tip">log</a></li>
<li><a href="/graph/tip">graph</a></li>
<li><a href="/tags">tags</a></li>
<li><a href="/bookmarks">bookmarks</a></li>
<li><a href="/branches">branches</a></li>
</ul>
<ul>
<li><a href="/rev/tip">changeset</a></li>
<li><a href="/file/tip/">browse</a></li>
</ul>
<ul>
<li class="active">file</li>
<li><a href="/file/tip/primes.py">latest</a></li>
<li><a href="/diff/tip/primes.py">diff</a></li>
<li><a href="/comparison/tip/primes.py">comparison</a></li>
<li><a href="/annotate/tip/primes.py">annotate</a></li>
<li><a href="/log/tip/primes.py">file log</a></li>
<li><a href="/raw-file/tip/primes.py">raw</a></li>
</ul>
<ul>
<li><a href="/help">help</a></li>
</ul>
</div>
<div class="main">
<h2 class="breadcrumb"><a href="/">Mercurial</a> </h2>
<h3>
view primes.py @ 0:<a href="/rev/687f2d169546">687f2d169546</a>
<span class="phase">draft</span> <span class="branchhead">default</span> <span class="tag">tip</span>
</h3>
<form class="search" action="/log">
<p><input name="rev" id="search1" type="text" size="30" value="" /></p>
<div id="hint">Find changesets by keywords (author, files, the commit message), revision
number or hash, or <a href="/help/revsets">revset expression</a>.</div>
</form>
<div class="description">a</div>
<table id="changesetEntry">
<tr>
<th class="author">author</th>
<td class="author">test</td>
</tr>
<tr>
<th class="date">date</th>
<td class="date age">Thu, 01 Jan 1970 00:00:00 +0000</td>
</tr>
<tr>
<th class="author">parents</th>
<td class="author"></td>
</tr>
<tr>
<th class="author">children</th>
<td class="author"></td>
</tr>
</table>
<div class="overflow">
<div class="sourcefirst linewraptoggle">line wrap: <a class="linewraplink" href="#">on</a></div>
<div class="sourcefirst"> line source</div>
<pre class="sourcelines stripes4 wrap bottomline"
data-logurl="/log/tip/primes.py"
data-selectabletag="SPAN"
data-ishead="1">
<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">import</span> <span class="nn">itertools</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">itertools</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">itertools</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">itertools</span><span class="o">.</span><span class="n">count</span><span class="p">())</span></span><a href="#l20"></a>
<span id="l21"> <span class="n">dropwhile</span> <span class="o">=</span> <span class="n">itertools</span><span class="o">.</span><span class="n">dropwhile</span></span><a href="#l21"></a>
<span id="l22"> <span class="kn">return</span> <span class="n">itertools</span><span class="o">.</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="#l22"></a>
<span id="l23"></span><a href="#l23"></a>
<span id="l24"><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="#l24"></a>
<span id="l25"> <span class="kn">import</span> <span class="nn">sys</span></span><a href="#l25"></a>
<span id="l26"> <span class="kn">try</span><span class="p">:</span></span><a href="#l26"></a>
<span id="l27"> <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="#l27"></a>
<span id="l28"> <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="#l28"></a>
<span id="l29"> <span class="n">n</span> <span class="o">=</span> <span class="mi">10</span></span><a href="#l29"></a>
<span id="l30"> <span class="n">p</span> <span class="o">=</span> <span class="n">primes</span><span class="p">()</span></span><a href="#l30"></a>
<span id="l31"> <span class="nb">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">itertools</span><span class="o">.</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="#l31"></a> (pygments25 !)
<span id="l31"> <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">itertools</span><span class="o">.</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="#l31"></a> (no-pygments25 !)
<span id="l32"></span><a href="#l32"></a>
</pre>
</div>
<script type="text/javascript" src="/static/followlines.js"></script>
</div>
</div>
</body>
</html>
hgweb fileannotate, html
$ (get-with-headers.py localhost:$HGPORT 'annotate/tip/primes.py') | filterhtml
200 Script output follows
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US">
<head>
<link rel="icon" href="/static/hgicon.png" type="image/png" />
<meta name="robots" content="index, nofollow" />
<link rel="stylesheet" href="/static/style-paper.css" type="text/css" />
<script type="text/javascript" src="/static/mercurial.js"></script>
<link rel="stylesheet" href="/highlightcss" type="text/css" />
<title>test: primes.py annotate</title>
</head>
<body>
<div class="container">
<div class="menu">
<div class="logo">
<a href="https://mercurial-scm.org/">
<img src="/static/hglogo.png" alt="mercurial" /></a>
</div>
<ul>
<li><a href="/shortlog/tip">log</a></li>
<li><a href="/graph/tip">graph</a></li>
<li><a href="/tags">tags</a></li>
<li><a href="/bookmarks">bookmarks</a></li>
<li><a href="/branches">branches</a></li>
</ul>
<ul>
<li><a href="/rev/tip">changeset</a></li>
<li><a href="/file/tip/">browse</a></li>
</ul>
<ul>
<li><a href="/file/tip/primes.py">file</a></li>
<li><a href="/file/tip/primes.py">latest</a></li>
<li><a href="/diff/tip/primes.py">diff</a></li>
<li><a href="/comparison/tip/primes.py">comparison</a></li>
<li class="active">annotate</li>
<li><a href="/log/tip/primes.py">file log</a></li>
<li><a href="/raw-file/tip/primes.py">raw</a></li>
</ul>
<ul>
<li><a href="/help">help</a></li>
</ul>
</div>
<div class="main">
<h2 class="breadcrumb"><a href="/">Mercurial</a> </h2>
<h3>
annotate primes.py @ 0:<a href="/rev/687f2d169546">687f2d169546</a>
<span class="phase">draft</span> <span class="branchhead">default</span> <span class="tag">tip</span>
</h3>
<form class="search" action="/log">
<p><input name="rev" id="search1" type="text" size="30" value="" /></p>
<div id="hint">Find changesets by keywords (author, files, the commit message), revision
number or hash, or <a href="/help/revsets">revset expression</a>.</div>
</form>
<div class="description">a</div>
<table id="changesetEntry">
<tr>
<th class="author">author</th>
<td class="author">test</td>
</tr>
<tr>
<th class="date">date</th>
<td class="date age">Thu, 01 Jan 1970 00:00:00 +0000</td>
</tr>
<tr>
<th class="author">parents</th>
<td class="author"></td>
</tr>
<tr>
<th class="author">children</th>
<td class="author"></td>
</tr>
</table>
<form id="diffopts-form"
data-ignorews="0"
data-ignorewsamount="0"
data-ignorewseol="0"
data-ignoreblanklines="0">
<span>Ignore whitespace changes - </span>
<span>Everywhere:</span>
<input id="ignorews-checkbox" type="checkbox" />
<span>Within whitespace:</span>
<input id="ignorewsamount-checkbox" type="checkbox" />
<span>At end of lines:</span>
<input id="ignorewseol-checkbox" type="checkbox" />
</form>
<script type="text/javascript">
renderDiffOptsForm();
</script>
<div class="overflow">
<table class="bigtable">
<thead>
<tr>
<th class="annotate">rev</th>
<th class="line"> line source</th>
</tr>
</thead>
<tbody class="stripes2 sourcelines"
data-logurl="/log/tip/primes.py"
data-selectabletag="TR"
data-ishead="1">
<tr id="l1" class="thisrev">
<td class="annotate parity0">
<a href="/annotate/687f2d169546/primes.py#l1">
0
</a>
<div class="annotate-info">
<div>
<a href="/annotate/687f2d169546/primes.py#l1">
687f2d169546</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l1"> 1</a> <span class="sd">"""Fun with generators. Corresponding Haskell implementation:</span></td>
</tr>
<tr id="l2" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/687f2d169546/primes.py#l2">
687f2d169546</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l2"> 2</a> </td>
</tr>
<tr id="l3" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/687f2d169546/primes.py#l3">
687f2d169546</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l3"> 3</a> <span class="sd">primes = 2 : sieve [3, 5..]</span></td>
</tr>
<tr id="l4" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/687f2d169546/primes.py#l4">
687f2d169546</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">changeset</a>
</div>
</td>
<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>
</tr>
<tr id="l5" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/687f2d169546/primes.py#l5">
687f2d169546</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l5"> 5</a> <span class="sd">"""</span></td>
</tr>
<tr id="l6" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/687f2d169546/primes.py#l6">
687f2d169546</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l6"> 6</a> </td>
</tr>
<tr id="l7" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/687f2d169546/primes.py#l7">
687f2d169546</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l7"> 7</a> <span class="kn">import</span> <span class="nn">itertools</span></td>
</tr>
<tr id="l8" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/687f2d169546/primes.py#l8">
687f2d169546</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l8"> 8</a> </td>
</tr>
<tr id="l9" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/687f2d169546/primes.py#l9">
687f2d169546</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">changeset</a>
</div>
</td>
<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>
</tr>
<tr id="l10" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/687f2d169546/primes.py#l10">
687f2d169546</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l10"> 10</a> <span class="sd">"""Generate all primes."""</span></td>
</tr>
<tr id="l11" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/687f2d169546/primes.py#l11">
687f2d169546</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">changeset</a>
</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/687f2d169546/primes.py#l12">
687f2d169546</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">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/687f2d169546/primes.py#l13">
687f2d169546</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">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/687f2d169546/primes.py#l14">
687f2d169546</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">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/687f2d169546/primes.py#l15">
687f2d169546</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">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/687f2d169546/primes.py#l16">
687f2d169546</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">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">itertools</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/687f2d169546/primes.py#l17">
687f2d169546</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">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/687f2d169546/primes.py#l18">
687f2d169546</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">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/687f2d169546/primes.py#l19">
687f2d169546</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">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/687f2d169546/primes.py#l20">
687f2d169546</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">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">itertools</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">itertools</span><span class="o">.</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/687f2d169546/primes.py#l21">
687f2d169546</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l21"> 21</a> <span class="n">dropwhile</span> <span class="o">=</span> <span class="n">itertools</span><span class="o">.</span><span class="n">dropwhile</span></td>
</tr>
<tr id="l22" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/687f2d169546/primes.py#l22">
687f2d169546</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l22"> 22</a> <span class="kn">return</span> <span class="n">itertools</span><span class="o">.</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="l23" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/687f2d169546/primes.py#l23">
687f2d169546</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l23"> 23</a> </td>
</tr>
<tr id="l24" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/687f2d169546/primes.py#l24">
687f2d169546</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l24"> 24</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="l25" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/687f2d169546/primes.py#l25">
687f2d169546</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l25"> 25</a> <span class="kn">import</span> <span class="nn">sys</span></td>
</tr>
<tr id="l26" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/687f2d169546/primes.py#l26">
687f2d169546</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l26"> 26</a> <span class="kn">try</span><span class="p">:</span></td>
</tr>
<tr id="l27" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/687f2d169546/primes.py#l27">
687f2d169546</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l27"> 27</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="l28" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/687f2d169546/primes.py#l28">
687f2d169546</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l28"> 28</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="l29" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/687f2d169546/primes.py#l29">
687f2d169546</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l29"> 29</a> <span class="n">n</span> <span class="o">=</span> <span class="mi">10</span></td>
</tr>
<tr id="l30" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/687f2d169546/primes.py#l30">
687f2d169546</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l30"> 30</a> <span class="n">p</span> <span class="o">=</span> <span class="n">primes</span><span class="p">()</span></td>
</tr>
<tr id="l31" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/687f2d169546/primes.py#l31">
687f2d169546</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l31"> 31</a> <span class="nb">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">itertools</span><span class="o">.</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> (pygments25 !)
<td class="source followlines-btn-parent"><a href="#l31"> 31</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">itertools</span><span class="o">.</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> (no-pygments25 !)
</tr>
<tr id="l32" class="thisrev">
<td class="annotate parity0">
<div class="annotate-info">
<div>
<a href="/annotate/687f2d169546/primes.py#l32">
687f2d169546</a>
a
</div>
<div><em>test</em></div>
<div>parents: </div>
<a href="/diff/687f2d169546/primes.py">diff</a>
<a href="/rev/687f2d169546">changeset</a>
</div>
</td>
<td class="source followlines-btn-parent"><a href="#l32"> 32</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
>>> with open('eucjp.txt', 'wb') as fh:
... # Japanese kanji "Kyo"
... fh.write(u'\265\376'.encode('utf-8')) and None
$ 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 ..