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greed/nogreed 不管怎样都不完美。。。 [复制链接]

pooronce

稍有积蓄

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电梯直达

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发表于 2009-08-23 03:18 |只看该作者 |倒序浏览

发现不管用贪婪还是非贪婪，都不好进行多段匹配，似乎当非贪婪时，它住住结束判断过早
比如：

@row = $string =~ m@id="row1".*?site="(.*?)".*?title="(.*?).*?id="row2".*?site="(.*?)".*?title="(.*?).*?id="row3".*?site="(.*?)".*?title="(.*?).*?id="row4".*?site="(.*?)".*?title="(.*?).*?id="row5".*?site="(.*?)".*?title="(.*?)"@ism;

复制代码

用这个去匹配这段代码：

Referring Site's Destination Share to pandabuy.com
<img class="popup-help q99" src="http://media.compete.com/site_media/images/icons/helpicon.png" height="13" width="13" />
</span>
</th>
</tr>
</thead>
<tbody>
<tr class="white" id="row1" onmouseover="highlightRow(1);" onmouseout="unhighlightRow(1);">
<td style="width: 58px;" >1</td>
<td class="left">
<a class="tmp sitelink" site="google.com" href="/referral/google.com" >google.com</a>
</td>
<td title="38.3260903%">
<div class="percent">38.33%</div>
<div class="bargraph">
<div class="colorbar" style="width:38%"></div>
</div>
</td>
<td title="39.82">
<span id="ref_growth">
39.82
</span>
% <img src="http://media.compete.com/site_media/images/arrow_up.gif" />
</td>
<td title="0.0000298%">
<div class="percent">
<a href="/destination/google.com">< 0.01%</a>
</div>
<div class="bargraph">
<div class="colorbar" style="width:0%"></div>
</div>
</td>
</tr>
<tr class="grey" id="row2" onmouseover="highlightRow(2);" onmouseout="unhighlightRow(2);">
<td style="width: 58px;" >2</td>
<td class="left">
<a class="tmp sitelink" site="univision.com" href="/referral/univision.com" >univision.com</a>
</td>
<td title="6.7036345%">
<div class="percent">6.7%</div>
<div class="bargraph">
<div class="colorbar" style="width:7%"></div>
</div>
</td>
<td title="First month of referral data for Referring Site">
<span id="ref_growth">
New
</span>
</td>
<td title="0.0050100%">
<div class="percent">
<a href="/destination/univision.com">0.01%</a>
</div>
<div class="bargraph">
<div class="colorbar" style="width:0%"></div>
</div>
</td>
</tr>
<tr class="white" id="row3" onmouseover="highlightRow(3);" onmouseout="unhighlightRow(3);">
<td style="width: 58px;" >3</td>
<td class="left">
<a class="tmp sitelink" site="amazon.com" href="/referral/amazon.com" >amazon.com</a>
</td>
<td title="4.6109130%">
<div class="percent">4.61%</div>
<div class="bargraph">
<div class="colorbar" style="width:5%"></div>
</div>
</td>
<td title="First month of referral data for Referring Site">
<span id="ref_growth">
New
</span>
</td>
<td title="0.0000901%">
<div class="percent">
<a href="/destination/amazon.com">< 0.01%</a>
</div>
<div class="bargraph">
<div class="colorbar" style="width:0%"></div>
</div>
</td>
</tr>
<tr class="grey" id="row4" onmouseover="highlightRow(4);" onmouseout="unhighlightRow(4);">
<td style="width: 58px;" >4</td>
<td class="left">
<a class="tmp sitelink" site="163.com" href="/referral/163.com" >163.com</a>
</td>
<td title="Sample size too small to show values">
Low Sample
</td>
<td title="Sample size too small to show a change in share value">
<span id="ref_growth">
-
</span>
</td>
<td title="Sample size too small to show values">
<a href="/destination/163.com">
Low Sample
</a>
</td>
</tr>
<tr class="white" id="row5" onmouseover="highlightRow(5);" onmouseout="unhighlightRow(5);">
<td style="width: 58px;" >5</td>
<td class="left">
<a class="tmp sitelink" site="amazon.co.jp" href="/referral/amazon.co.jp" >amazon.co.jp</a>
</td>
<td title="Sample size too small to show values">
Low Sample
</td>
<td title="Sample size too small to show a change in share value">
<span id="ref_growth">
-
</span>
</td>
<td title="Sample size too small to show values">
<a href="/destination/amazon.co.jp">
Low Sample
</a>
</td>
</tr>
</tbody>