could you help me, I'm using a content extractor in regex but I have a problem extracting a subtitle:
<h2 class="page-title">Jesse Vega Schoolgirl <span class="duration">14 min</span> </h2>
I would like to select only the text and exclude the <span class="duration">14 min</span>
just stay like this
Jesse Vega Schoolgirl or so <h2> Jesse Vega Schoolgirl </h2>
I appreciate your answers
I assume, since your text is html, that you are trying to use javascript. So, the following will do it quickly.
.title\">([0-9a-zA-Z ]+).
Result will be in group 1.
Example:
let str = '<h2 class="page-title">Jesse Vega Schoolgirl <span class="duration">14 min</span> </h2>';
let groups = str.match(/.*title\">([0-9a-zA-Z ]+).*/);
alert(groups[1]);
Adding to the response, if there are more characters to match, you just need to add them to the group, as follows:
https://jsfiddle.net/fj2146ye/
Related
I'm trying to extract text from a lot of XHTML documents with a program that uses Xpath queries to map the text into a structured table. the XHTML document looks like this
<td class="td-3 c12" valign="top">
<p class="pa-4">
<span class="ca-5">text I would like to select </span>
</p>
</td>
<td class="td-3 c13" valign="top">
<p class="pa-2">
<span class="ca-0">some more text I want to select </span>
</p>
<p class="pa-2">
<span class="ca-0">
<br>
</br>
</span>
</p>
<p class="pa-2">
<span class="ca-5">text and values I don't want to select.</span>
</p>
<p class="pa-2">
<span class="ca-5"> also text and values I don't want to </span>
</p>
</td>
I'm able to select the the spans by their class and retrieve the text/values, however they're not unique enough and I need to filter by table classes. for example only the text from span class ca-0 that is a child of td class td-3 c13
which would be <span class="ca-0">some more text I want to select </span>
I've tried all these combinations
//xhtml:td[#class="td-3 c13"]/xhtml:span[#class = "ca-0"]
//xhtml:span[#class = "ca-0"] //ancestor::xhtml:td[#class= "td-3 c13"]
//xhtml:td[#class="td-3 c6"]//xhtml:span[#class = "ca-0"]
I'm not sure how much your sample xml reflects your actual xml, but strictly based on your sample xml (AND disregarding possible namespaces issues you will probably face), the following xpath expression:
//td[contains(#class,"td-3")]/p[1]/span/text()
selects
text I would like to select
some more text I want to select
According to the doc, and to support namespaces, you should write something like this (fn:...) :
//*:td[fn:contains(#class,"td-3")]/*:p[1]/*:span
Or with a binding namespace :
node.xpath("//xhtml:td[fn:contains(#class,'td-3')]/xhtml:p[1]/xhtml:span", {"xhtml":"http://example.com/ns"})
This expression should work too (select the first span of the first p of each td element) :
//*:td/*:p[1]/*:span[1]
Side notes :
Your XPath expressions could be fixed. Span is not a child but a descendant, so we use //. We use () to keep the first result only.
(//xhtml:td[#class="td-3 c13"]//xhtml:span[#class = "ca-0"])[1]
(//xhtml:td[#class="td-3 c6"]//xhtml:span[#class = "ca-0"])[1]
Replace // with a predicate [] :
(//xhtml:span[#class = "ca-0"][ancestor::xhtml:td[#class= "td-3 c13"]])[1]
Test your XPath with : https://docs.marklogic.com/cts.validIndexPath
The solution is
//td[(#class ="td-3") and (#class = "c13)]/p/span
for some reason it sees the
<td class="td-3 c13">
as separate classes e.g.
<td class = "td-3" and class = "c13"
so you need to treat them as such
Thanks to #E.Wiest and #JackFleeting for validating and pointing me in the right direction.
I want to add a NewClass value to the class attribute and modify the text of the span using find/replace functionality with a pair of regular expressions.
<div>
<span class='customer' id='phone$0'>Home</span>
<br/>
<span class='customer' id='phone$1'>Business</span>
<br/>
<span class='customer' id='phone$2'>Mobile</span>
</div>
I am trying to get the following result using after search/replace:
<span class='customer NewClass' id='phone$1'>Organization</span>
Also curious to know if a single find/replace operation can been used for both tasks?
Regex can do this, but be aware the using regex to change HTML can have a lot of edge cases that you may not have accounted for.
This regex101 example shows those three <span> elements changed to add NewClass and the contents to be changed to Organization.
Other technologies, however, would be safer. jQuery, for example, could replace them regardless of the order of the attributes:
$("span#phone$1").addClass("NewClass");
$("span#phone$1").text("Organization");
So just be careful with it, and you should be fine.
EDIT
According to comments on the OP, you want to only change the span containing ID phone$1, so the regex101 link has been updated to reflect this.
EDIT 2
Permalink was too long to fit into a comment, so adding the permalink here. Click on the "Content" tab at the bottom to see the replacement.
You can use a regex like this:
'.*?' id='phone\$1'>.*?<
With substitution string:
'customer' id='phone\$1'>Organization<
Working demo
Php code
$re = "/'.*?' id='phone\\$1'>.*?</";
$str = "<div>\n <span class='customer' id='phone\$0'>Home</span>\n<br/>\n <span class='customer' id='phone\$1'>Business</span>\n<br/>\n <span class='customer' id='phone\$2'>Mobile</span>\n</div>";
$subst = "'customerNewClass' id='phone\$1'>Organization<";
$result = preg_replace($re, $subst, $str);
Result
<div>
<span class='customer' id='phone$0'>Home</span>
<br/>
<span class='customerNewClass' id='phone$1'>Organization</span>
<br/>
<span class='customer' id='phone$2'>Mobile</span>
</div>
Since your tags include preg_match and preg_replace, I think you are using PHP.
Regex is generally not a good idea to manipulate HTML or XML. See RegEx match open tags except XHTML self-contained tags SO post.
In PHP, you can use DOMDocument and DOMXPath with //span[#id="phone$1"] xpath (get all span tags with id attribute vlaue equal to phone$1):
$html =<<<DATA
<div>
<span class='customer' id='phone$0'>Home</span>
<br/>
<span class='customer' id='phone$1'>Business</span>
<br/>
<span class='customer' id='phone$2'>Mobile</span>
</div>
DATA;
$dom = new DOMDocument('1.0', 'UTF-8');
$dom->loadHTML($html, LIBXML_HTML_NOIMPLIED | LIBXML_HTML_NODEFDTD);
$xp = new DOMXPath($dom);
$sps = $xp->query('//span[#id="phone$1"]');
foreach ($sps as $sp) {
$sp->setAttribute('class', $sp->getAttribute('class') . ' NewClass');
$sp->nodeValue = 'Organization';
}
echo $dom->saveHTML();
See IDEONE demo
Result:
<div>
<span class="customer" id="phone$0">Home</span>
<br>
<span class="customer NewClass" id="phone$1">Organization</span>
<br>
<span class="customer" id="phone$2">Mobile</span>
</div>
I'm trying to scrape html with Nokogiri.
This is the html source:
<span id="J_WlAreaInfo" class="wl-areacon">
<span id="J-From">山东济南</span>
至
<span id="J-To">
<span id="J_WlAddressInfo" class="wl-addressinfo" title="全国">
全国
<s></s>
</span>
</span>
</span>
I need to get the following text: 山东济南
Checked shortest XPATH with firebug:
//*[#id="J-From"]
Here is my ruby code:
doc = Nokogiri::HTML(open("http://foo.html"), "UTF-8")
area = doc.xpath('//*[#id="J-From"]')
puts area.text
However, it returns nothing.
What am I doing wrong?
However, it returns nothing. What am I doing wrong?
xpath() returns an array containing the matches (it's actually called a NodeSet):
require 'nokogiri'
html = %q{
<span id="J_WlAreaInfo" class="wl-areacon">
<span id="J-From">山东济南</span>
至
<span id="J-To">
<span id="J_WlAddressInfo" class="wl-addressinfo" title="全国">
全国
<s></s>
</span>
</span>
</span>
}
doc = Nokogiri::HTML(html)
target_tags = doc.xpath('//*[#id="J-From"]')
target_tags.each do |target_tag|
puts target_tag.text
end
--output:--
山东济南
Edit: You can actually call text() on the Array, but it will return the concatenated results of the text for each match in the array--which is not something I've ever found useful--but because there is only one match you should have gotten the result 山东济南. There is nothing in your post that indicates why you didn't get that result.
If you only want a single result from your xpath, i.e. the first match, then you can use at_xpath():
target_tag = doc.at_xpath('//*[#id="J-From"]')
puts target_tag.text
--output:--
山东济南
I want to get the rate that is from 1 to 5 in amazon customer reviews.
I check the source, and find this part looks as
<div style="margin-bottom:0.5em;">
<span style="margin-right:5px;"><span class="swSprite s_star_5_0 " title="5.0 out of 5 stars" ><span>5.0 out of 5 stars</span></span> </span>
<span style="vertical-align:middle;"><b>Works great right out of the box with Surface Pro</b>, <nobr>October 5, 2013</nobr></span>
</div>
I want to get 5.0 out of 5 stars from
<span>5.0 out of 5 stars</span></span> </span>
how can i use xpathSApply to get it?
Thank you!
I would recommend using the selectr package, which uses css selectors in place of xpath.
library(XML)
doc <- htmlParse('
<div style="margin-bottom:0.5em;">
<span style="margin-right:5px;">
<span class="swSprite s_star_5_0 " title="5.0 out of 5 stars" >
<span>5.0 out of 5 stars</span></span> </span>
<span style="vertical-align:middle;">
<b>Works great right out of the box with Surface Pro</b>,
<nobr>October 5, 2013</nobr></span>
</div>', asText = TRUE
)
library(selectr)
xmlValue(querySelector(doc, 'div > span > span > span'))
UPDATE: If you are looking to use xpath, you can use the css_to_xpath function in selectr to figure out the appropriate xpath command, which in this case turns out to be
"descendant-or-self::div/span/span/span"
I do not know r much but I can give you the XPath string. It seems you want the first span's text which has no attribute and this would be:
//span[not(#*)][1]/text()
You can put this string into xpathSApply.
I'm looking for a command line tool (or Perl module or VIM script or whatever) that will take some input files (such as XML or JavaScript files) and format them in HTML. I specifically want my output not to contain stuff like <span style="color: red"> or <font color=red> according to a particular colour scheme, rather it should use CSS class names to mark up the different syntactic parts of the file.
For example, if I had this file as input:
function f(x) {
return x + 1;
}
the kind of output I would like is:
<pre><span class=keyword>function</span> <span class=ident>f</span><span class=punc>{</span>
<span class=keyword>return</span> <span class=ident>x</span> <span class=op>+</span> <span class=numliteral>1</span><span class=punc>;</span>
<span class=punc>}</span></pre>
Does anyone know of such a tool?
Something like VIM's 2html.vim script, but outputting class="" attributes with the syntax highlight group names (like "Constant", "Identifier", "Statement", etc.) would be ideal.
Thanks,
Cameron
You can feed a file into GeSHi using PHP on the command line (or cURL your own local server or some other hack)
http://qbnz.com/highlighter/geshi-doc.html#basic-usage
There is buf2html.vim. Unfortunately, it uses non-semantic class names: See http://intrepid.perlmonk.org/apropos.vim/buf2html/current/myself.html
I think this is exacly what Vim's :TOhtml does if you
:let html_use_css = 1
Original:
function f(x) {
return x + 1;
}
output:
<pre>
<span class="Identifier">function</span> f(<span class="">x</span><span class="javaScriptParens">)</span><span class=""> </span><span class="Identifier">{</span>
<span class="Statement">return</span><span class=""> x + </span>1<span class="">;</span>
<span class="Identifier">}</span>
</pre>