delete from pattern to pattern if it contains match

[harirammanohar at gmail.com]

On Monday, April 25, 2016 at 3:19:15 PM UTC+5:30, hariram... at gmail.com wrote:
> On Monday, April 25, 2016 at 12:47:14 PM UTC+5:30, Jussi Piitulainen wrote:
> > harirammanohar at gmail.com writes:
> > 
> > > Hi Jussi,
> > >
> > > i have seen you have written a definition to fulfill the requirement,
> > > can we do this same thing using xml parser, as i have failed to
> > > implement the thing using xml parser of python if the file is having
> > > the content as below...
> > >
> > > <!DOCTYPE web-app 
> > >     PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" 
> > >     "http://java.sun.com/dtd/web-app_2_3.dtd">
> > >
> > > <web-app>
> > >
> > > and entire thing works if it has as below:
> > > <!DOCTYPE web-app 
> > > <web-app>
> > >
> > > what i observe is xml tree parsing is not working if http tags are
> > > there in between web-app...
> > 
> > Do you get an error message?
> > 
> > My guess is that the parser needs the DTD but cannot access it. There
> > appears to be a DTD at that address, http://java.sun.com/... (it
> > redirects to Oracle, who bought Sun a while ago), but something might
> > prevent the parser from accessing it by default. If so, the details
> > depend on what parser you are trying to use. It may be possible to save
> > that DTD as a local file and point the parser to that.
> > 
> > Your problem is morphing rather wildly. A previous version had namespace
> > declarations but no DTD or XSD if I remember right. The initial version
> > wasn't XML at all.
> > 
> > If you post (1) an actual, minimal document, (2) the actual Python
> > commands that fail to parse it, and (3) the error message you get,
> > someone will be able to help you. The content of the document need not
> > be more than "hello, world" level. The DOCTYPE declaration and the
> > outermost tags with all their attributes and namespace declarations, if
> > any, are important.
> 
> Hi Jussi,
> 
> Here is an input file...sample.xml
> 
> <?xml version="1.0" encoding="ISO-8859-1"?>
> <web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
>   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
>   xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
>                       http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
>   version="3.1">
>     <servlet>
>       <servlet-name>controller</servlet-name>
>       <servlet-class>com.mycompany.mypackage.ControllerServlet</servlet-class>
>       <init-param>
>         <param-name>listOrders</param-name>
>         <param-value>com.mycompany.myactions.ListOrdersAction</param-value>
>       </init-param>
>       <init-param>
>         <param-name>saveCustomer</param-name>
>         <param-value>com.mycompany.myactions.SaveCustomerAction</param-value>
>       </init-param>
>       <load-on-startup>5</load-on-startup>
>     </servlet>
> 
> 
>     <servlet-mapping>
>       <servlet-name>graph</servlet-name>
>       <url-pattern>/graph</url-pattern>
>     </servlet-mapping>
> 
> 
>     <session-config>
>       <session-timeout>30</session-timeout>
>     </session-config>
> </web-app>
> 
> --------------------------------
> Here is the code:
> 
> import xml.etree.ElementTree as ET
> ET.register_namespace("", "http://xmlns.jcp.org/xml/ns/javaee")
> tree = ET.parse('sample.xml')
> root = tree.getroot()
> 
> for servlet in root.findall('servlet'):
>         servletname = servlet.find('servlet-name').text
>         if servletname == "controller":
>                 root.remove(servlet)
> 
> tree.write('output.xml')
> 
> This will work if <web-app> </web-app> doesnt have below...
> 
> xmlns="http://xmlns.jcp.org/xml/ns/javaee"
>   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
>   xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
>                       http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"

By the way i didnt get any error message and i am using version 3.4.3