tests/test-highlight.t
author Alexander Plavin <me@aplavin.ru>
Thu, 04 Jul 2013 14:18:44 +0400
changeset 19387 f2e4fdb3dd27
parent 18291 5db16424142c
child 19430 5ec5097b4c0f
permissions -rw-r--r--
hgweb: code selection without line numbers in file source view All the source lines are put in a <pre> tag, which gives correct display and copy&paste in both Chromium (WebKit) and FireFox: line numbers are not copied, all the tabs and spaces are kept. This doesn't change the visual appearance of the view compared to current hgweb version and doesn't use any JS code. Also, stripes in this view are now generated clientside with CSS. This implementation is chosen because other variants have important issues: Strategy FF Chrome current D,LT,E,T,L D,L pre S,NW S,NW pre/div/nbsp LT,E,T,TS,NW TS,NW pre/div/br LT,E,T,NW NW ol/li/nbsp LT,E,T,TS,AJ TS,AJ ol/li/br LT,E,T,AJ AJ pre/span LV LV Legend Strategies: - current: implemented in hgweb before this patch, i.e. divs for each line, and line numbers links in the div too - pre: the whole code in one pre tag with newlines, all line numbers in another one with 'float: left' - pre/div/{nbsp,br}: same as just 'pre', but separate divs for each line and &nbsp; or <br> instead of empty lines (otherwise they are not copied at all) - ol/li/{nbsp,br}: a single ol with li's and divs for each line, &nbsp; or <br> same as in previous strategy - pre/span: this patch Problems: D = (very minor) display problems, like wrong width of leading tabs LT = loses leading/trailing whitespace E = loses embedded whitespace B = loses blank lines T = loses tabs L = selects line numbers LV = (only) visually selects line numbers LVE = (only) visually selects line numbers at empty lines S = no stripes (and no ability to easily highlight lines-which-are-linked-at in the future) TS = space copied instead of empty line AJ = get anchor links only with JS (they work even without) NW = no linewrap easily possible (in future) As for browser versions compatibility, the CSS tricks used are supported in (according to caniuse.com): a) line numbers generation with 'content:' property and CSS counters: IE 8+, all other popular browsers (in pre-WebKit Opera numbers are being copied) b) stripes ('nth-child' selector): IE 8+, FF 3.5+, Safari 3.2+, Opera 9.5+, all other popular browsers c) line numbers are not visually selected ('user-select:' property): IE 10+, Opera 15.0+, all other popular browsers This patch is based on a demo implementation by Martin Geisler <martin@geisler.net>.


  $ "$TESTDIR/hghave" pygments serve || exit 80
  $ cat <<EOF >> $HGRCPATH
  > [extensions]
  > highlight =
  > [web]
  > pygments_style = friendly
  > EOF
  $ hg init test
  $ cd test

create random Python file to exercise Pygments

  $ cat <<EOF > primes.py
  > #!/usr/bin/env python
  > 
  > """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
  $ 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

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  <span id="l1"><span class="c">#!/usr/bin/env python</span></span><a href="#l1"></a>
  <span id="l2"></span><a href="#l2"></a>
  <span id="l3"><span class="sd">&quot;&quot;&quot;Fun with generators. Corresponding Haskell implementation:</span></span><a href="#l3"></a>
  <span id="l4"></span><a href="#l4"></a>
  <span id="l5"><span class="sd">primes = 2 : sieve [3, 5..]</span></span><a href="#l5"></a>
  <span id="l6"><span class="sd">    where sieve (p:ns) = p : sieve [n | n &lt;- ns, mod n p /= 0]</span></span><a href="#l6"></a>
  <span id="l7"><span class="sd">&quot;&quot;&quot;</span></span><a href="#l7"></a>
  <span id="l8"></span><a href="#l8"></a>
  <span id="l9"><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="#l9"></a>
  <span id="l10"></span><a href="#l10"></a>
  <span id="l11"><span class="kn">def</span> <span class="nf">primes</span><span class="p">():</span></span><a href="#l11"></a>
  <span id="l12">    <span class="sd">&quot;&quot;&quot;Generate all primes.&quot;&quot;&quot;</span></span><a href="#l12"></a>
  <span id="l13">    <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="#l13"></a>
  <span id="l14">        <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="#l14"></a>
  <span id="l15">        <span class="c"># It is important to yield *here* in order to stop the</span></span><a href="#l15"></a>
  <span id="l16">        <span class="c"># infinite recursion.</span></span><a href="#l16"></a>
  <span id="l17">        <span class="kn">yield</span> <span class="n">p</span></span><a href="#l17"></a>
  <span id="l18">        <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="#l18"></a>
  <span id="l19">        <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="#l19"></a>
  <span id="l20">            <span class="kn">yield</span> <span class="n">n</span></span><a href="#l20"></a>
  <span id="l21"></span><a href="#l21"></a>
  <span id="l22">    <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="#l22"></a>
  <span id="l23">    <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">&lt;</span> <span class="mi">3</span><span class="p">,</span> <span class="n">odds</span><span class="p">)))</span></span><a href="#l23"></a>
  <span id="l24"></span><a href="#l24"></a>
  <span id="l25"><span class="kn">if</span> <span class="n">__name__</span> <span class="o">==</span> <span class="s">&quot;__main__&quot;</span><span class="p">:</span></span><a href="#l25"></a>
  <span id="l26">    <span class="kn">import</span> <span class="nn">sys</span></span><a href="#l26"></a>
  <span id="l27">    <span class="kn">try</span><span class="p">:</span></span><a href="#l27"></a>
  <span id="l28">        <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="#l28"></a>
  <span id="l29">    <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="#l29"></a>
  <span id="l30">        <span class="n">n</span> <span class="o">=</span> <span class="mi">10</span></span><a href="#l30"></a>
  <span id="l31">    <span class="n">p</span> <span class="o">=</span> <span class="n">primes</span><span class="p">()</span></span><a href="#l31"></a>
  <span id="l32">    <span class="kn">print</span> <span class="s">&quot;The first </span><span class="si">%d</span><span class="s"> primes: </span><span class="si">%s</span><span class="s">&quot;</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="#l32"></a></pre>
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  <td class="source"><a href="#l1" id="l1">     1</a> <span class="c">#!/usr/bin/env python</span></td>
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  <td class="source"><a href="#l2" id="l2">     2</a> </td>
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  <td class="source"><a href="#l3" id="l3">     3</a> <span class="sd">&quot;&quot;&quot;Fun with generators. Corresponding Haskell implementation:</span></td>
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  <td class="source"><a href="#l4" id="l4">     4</a> </td>
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  <td class="source"><a href="#l5" id="l5">     5</a> <span class="sd">primes = 2 : sieve [3, 5..]</span></td>
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  <td class="source"><a href="#l6" id="l6">     6</a> <span class="sd">    where sieve (p:ns) = p : sieve [n | n &lt;- ns, mod n p /= 0]</span></td>
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  <td class="source"><a href="#l7" id="l7">     7</a> <span class="sd">&quot;&quot;&quot;</span></td>
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  <td class="source"><a href="#l8" id="l8">     8</a> </td>
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  <td class="source"><a href="#l9" id="l9">     9</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"><a href="#l10" id="l10">    10</a> </td>
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  <td class="source"><a href="#l11" id="l11">    11</a> <span class="kn">def</span> <span class="nf">primes</span><span class="p">():</span></td>
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  <td class="source"><a href="#l12" id="l12">    12</a>     <span class="sd">&quot;&quot;&quot;Generate all primes.&quot;&quot;&quot;</span></td>
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  <td class="source"><a href="#l13" id="l13">    13</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>
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  <td class="source"><a href="#l14" id="l14">    14</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>
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  <td class="source"><a href="#l15" id="l15">    15</a>         <span class="c"># It is important to yield *here* in order to stop the</span></td>
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  <td class="source"><a href="#l16" id="l16">    16</a>         <span class="c"># infinite recursion.</span></td>
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  title="853dcd4de2a6: a">test@0</a>
  </td>
  <td class="source"><a href="#l17" id="l17">    17</a>         <span class="kn">yield</span> <span class="n">p</span></td>
  </tr>
  <tr class="parity1">
  <td class="annotate">
  <a href="/annotate/853dcd4de2a6/primes.py#l18"
  title="853dcd4de2a6: a">test@0</a>
  </td>
  <td class="source"><a href="#l18" id="l18">    18</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="mf">0</span><span class="p">,</span> <span class="n">ns</span><span class="p">)</span></td>
  </tr>
  <tr class="parity0">
  <td class="annotate">
  <a href="/annotate/853dcd4de2a6/primes.py#l19"
  title="853dcd4de2a6: a">test@0</a>
  </td>
  <td class="source"><a href="#l19" id="l19">    19</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 class="parity1">
  <td class="annotate">
  <a href="/annotate/853dcd4de2a6/primes.py#l20"
  title="853dcd4de2a6: a">test@0</a>
  </td>
  <td class="source"><a href="#l20" id="l20">    20</a>             <span class="kn">yield</span> <span class="n">n</span></td>
  </tr>
  <tr class="parity0">
  <td class="annotate">
  <a href="/annotate/853dcd4de2a6/primes.py#l21"
  title="853dcd4de2a6: a">test@0</a>
  </td>
  <td class="source"><a href="#l21" id="l21">    21</a> </td>
  </tr>
  <tr class="parity1">
  <td class="annotate">
  <a href="/annotate/853dcd4de2a6/primes.py#l22"
  title="853dcd4de2a6: a">test@0</a>
  </td>
  <td class="source"><a href="#l22" id="l22">    22</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="mf">2</span> <span class="o">==</span> <span class="mf">1</span><span class="p">,</span> <span class="n">count</span><span class="p">())</span></td>
  </tr>
  <tr class="parity0">
  <td class="annotate">
  <a href="/annotate/853dcd4de2a6/primes.py#l23"
  title="853dcd4de2a6: a">test@0</a>
  </td>
  <td class="source"><a href="#l23" id="l23">    23</a>     <span class="kn">return</span> <span class="n">chain</span><span class="p">([</span><span class="mf">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">&lt;</span> <span class="mf">3</span><span class="p">,</span> <span class="n">odds</span><span class="p">)))</span></td>
  </tr>
  <tr class="parity1">
  <td class="annotate">
  <a href="/annotate/853dcd4de2a6/primes.py#l24"
  title="853dcd4de2a6: a">test@0</a>
  </td>
  <td class="source"><a href="#l24" id="l24">    24</a> </td>
  </tr>
  <tr class="parity0">
  <td class="annotate">
  <a href="/annotate/853dcd4de2a6/primes.py#l25"
  title="853dcd4de2a6: a">test@0</a>
  </td>
  <td class="source"><a href="#l25" id="l25">    25</a> <span class="kn">if</span> <span class="n">__name__</span> <span class="o">==</span> <span class="s">&quot;__main__&quot;</span><span class="p">:</span></td>
  </tr>
  <tr class="parity1">
  <td class="annotate">
  <a href="/annotate/853dcd4de2a6/primes.py#l26"
  title="853dcd4de2a6: a">test@0</a>
  </td>
  <td class="source"><a href="#l26" id="l26">    26</a>     <span class="kn">import</span> <span class="nn">sys</span></td>
  </tr>
  <tr class="parity0">
  <td class="annotate">
  <a href="/annotate/853dcd4de2a6/primes.py#l27"
  title="853dcd4de2a6: a">test@0</a>
  </td>
  <td class="source"><a href="#l27" id="l27">    27</a>     <span class="kn">try</span><span class="p">:</span></td>
  </tr>
  <tr class="parity1">
  <td class="annotate">
  <a href="/annotate/853dcd4de2a6/primes.py#l28"
  title="853dcd4de2a6: a">test@0</a>
  </td>
  <td class="source"><a href="#l28" id="l28">    28</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="mf">1</span><span class="p">])</span></td>
  </tr>
  <tr class="parity0">
  <td class="annotate">
  <a href="/annotate/853dcd4de2a6/primes.py#l29"
  title="853dcd4de2a6: a">test@0</a>
  </td>
  <td class="source"><a href="#l29" id="l29">    29</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 class="parity1">
  <td class="annotate">
  <a href="/annotate/853dcd4de2a6/primes.py#l30"
  title="853dcd4de2a6: a">test@0</a>
  </td>
  <td class="source"><a href="#l30" id="l30">    30</a>         <span class="n">n</span> <span class="o">=</span> <span class="mf">10</span></td>
  </tr>
  <tr class="parity0">
  <td class="annotate">
  <a href="/annotate/853dcd4de2a6/primes.py#l31"
  title="853dcd4de2a6: a">test@0</a>
  </td>
  <td class="source"><a href="#l31" id="l31">    31</a>     <span class="n">p</span> <span class="o">=</span> <span class="n">primes</span><span class="p">()</span></td>
  </tr>
  <tr class="parity1">
  <td class="annotate">
  <a href="/annotate/853dcd4de2a6/primes.py#l32"
  title="853dcd4de2a6: a">test@0</a>
  </td>
  <td class="source"><a href="#l32" id="l32">    32</a>     <span class="kn">print</span> <span class="s">&quot;The first </span><span class="si">%d</span><span class="s"> primes: </span><span class="si">%s</span><span class="s">&quot;</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>
  </table>
  </div>
  </div>
  </div>
  
  <script type="text/javascript">process_dates()</script>
  
  
  </body>
  </html>
  

hgweb fileannotate, raw

  $ ("$TESTDIR/get-with-headers.py" localhost:$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
  $ diff -u b a

hgweb filerevision, raw

  $ ("$TESTDIR/get-with-headers.py" localhost:$HGPORT 'file/tip/primes.py?style=raw') \
  >     > a
  $ echo "200 Script output follows" > b
  $ echo "" >> b
  $ hg cat primes.py >> b
  $ diff -u b a

hgweb highlightcss friendly

  $ "$TESTDIR/get-with-headers.py" localhost:$HGPORT 'highlightcss' > out
  $ head -n 4 out
  200 Script output follows
  
  /* pygments_style = friendly */
  
  $ rm out

errors encountered

  $ cat errors.log
  $ "$TESTDIR/killdaemons.py" $DAEMON_PIDS

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

  $ "$TESTDIR/get-with-headers.py" localhost:$HGPORT 'highlightcss' > out
  $ head -n 4 out
  200 Script output follows
  
  /* pygments_style = fruity */
  
  $ rm out

errors encountered

  $ cat errors.log
  $ cd ..
  $ hg init eucjp
  $ cd eucjp
  $ python -c 'print("\265\376")' >> eucjp.txt  # Japanese kanji "Kyo"
  $ hg ci -Ama
  adding eucjp.txt
  $ hgserveget () {
  >     "$TESTDIR/killdaemons.py" $DAEMON_PIDS
  >     echo % HGENCODING="$1" hg serve
  >     HGENCODING="$1" hg serve -p $HGPORT -d -n test --pid-file=hg.pid -E errors.log
  >     cat hg.pid >> $DAEMON_PIDS
  > 
  >     echo % hgweb filerevision, html
  >     "$TESTDIR/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

  $ cd ..