with vimgrep - or other vim possibility - how can i get groups of data out of a file? - vim

Question

I'm trying to do a vimgrep on a file in order to get only two attributs with their values out of the xml file.
so far i can get the complete lines and i'd like with the help of groups to have a better display.
:vimgrep key= % | copen
^ I'd like to add to this command the grouping possibility with "( )" ....but without success for the moment.
i'd appreciate your help in order to have a result as explained in the "result expected"
part of the file that I'm working with :
<policy name="Menu_Controls" class="User" displayName="$(string.Menu_Controls)" explainText="$(string.IE_ExplainMenu_Controls)" presentation="$(presentation.Menu_Controls)" key="Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\AllowedControls">
<parentCategory ref="AdminApproved" />
<supportedOn ref="SUPPORTED_IE5" />
<elements>
<boolean id="MCSiMenu" valueName="{275E2FE0-7486-11D0-89D6-00A0C90C9B67}">
<trueValue>
<decimal value="0" />
</trueValue>
<falseValue>
<decimal value="1" />
</falseValue>
</boolean>
<boolean id="PopupMenu_Object" valueName="{7823A620-9DD9-11CF-A662-00AA00C066D2}">
<trueValue>
<decimal value="0" />
</trueValue>
<falseValue>
<decimal value="1" />
</falseValue>
</boolean>
<boolean id="Ikonic_Control" valueName="{F5131C24-E56D-11CF-B78A-444553540000}">
<trueValue>
<decimal value="0" />
</trueValue>
<falseValue>
<decimal value="1" />
</falseValue>
</boolean>
</elements>
</policy>
<policy name="Microsoft_Agent" class="User" displayName="$(string.Microsoft_Agent)" explainText="$(string.IE_Explain_Microsoft_Agent)" presentation="$(presentation.Microsoft_Agent)" key="Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\AllowedControls">
<parentCategory ref="AdminApproved" />
<supportedOn ref="SUPPORTED_IE5" />
<elements>
<boolean id="Microsoft_Agent_Control" valueName="{D45FD31B-5C6E-11D1-9EC1-00C04FD7081F}">
<trueValue>
<decimal value="0" />
</trueValue>
<falseValue>
<decimal value="1" />
</falseValue>
</boolean>
</elements>
</policy>
my expected result :
name="Menu_Controls" key="Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\AllowedControls"
name="Microsoft_Agent" key="Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\AllowedControls"
thanks in advance for your help.
toshi

Answer 1

two cmds could do it:
v/<policy /d
then
%s/.* \(name="[^"]*"\).*\(key="[^"]*"\).*/\1 \2/g

Answer 2

My ExtractMatches plugin provides a :YankMatches command, with which you can extract the matches and put them into a scratch buffer. As a one-liner:
:execute 'YankMatches \<\%(name\|key\)="[^"]*"' | new | put!
Result:
name="Menu_Controls"
key="Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\AllowedControls"
name="Microsoft_Agent"
key="Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\AllowedControls"

Answer 3

If you find :vimgrep and the quickfix list really helpful, you can use the editqf.vim plugin to make the quickfix list of your grep results editable, and then use e.g. a variation of the :%s command given in #Kent's answer to strip off the extraneous stuff.