使用Awk / Sed - 需要在File中将值增加5（发生在XML但不能使用xml工具）

Question

Ive been looking at a number of posts this morning. Some get very close to what I need.

I have a file that contains multiple lines of Network ports in use. I need to create different files and the values need to change by an increment of 5.

The file contains 100 lines ( example ) but Im only concerned with data within the "ports" tag.

Example

<parent>
<config>
<config1 label="Configuration1 Port">41502</config1>
<config2 label="Configuration2 Port">61160</pls_vimvom>
</config>
<ports>
<donttouch label="Base Port">1234</donttouch>
<op_var_tank label="Tank Port">41502</op_var_tank>
<pls_vimvom label="Local Port">61160</pls_vimvom>
<pls_xxx label="Local Port">11110-11120</pls_xxx>
</ports>
<extra>
More here
</extra>
</parent>

I need to retain the line with tag "donttouch" but change others. This line will always have the tags <donttouch> to </donttouch>

I want to replace 41502 with 41507 , and 61160 with 61165 ( and so on.. ) I was able to set a hardcoded value as follows: ( I need an increment )

sed -i -e '/<ports>/,/<\/ports>/ s|Port">[0-9a-z.]\{1,\}</|Port">1234567</|g' text2.xml 

The Delimiter that's static is from

Port">

to

</

I need to make sure I only change the content between parent tags "" and ""

So my expected output from the above ( incrementing by 5 )

<parent>
<config>
<config1 label="Configuration1 Port">41502</config1>
<config2 label="Configuration2 Port">61160</pls_vimvom>
</config>
<ports>
<donttouch label="Base Port">1234</donttouch>
<op_var_tank label="Tank Port">41507</op_var_tank>
<pls_vimvom label="Local Port">61165</pls_vimvom>
<pls_xxx label="Local Port">11115-11125</pls_xxx>
</ports>
<extra>
More here
</extra>
</parent>

Thanks!

**Edited to reflect my complete requirement , thanks Ed*

Answer 1

If your data is always that regular (eg not split across lines within tags) then all you need is:

$ cat tst.awk
BEGIN { FS="[<>]" }
/<\/?ports>/ { inPorts = !inPorts }
inPorts && !/<donttouch/ {
    new = ""
    split($3,range,/-/)
    for (i=1;i in range;i++) {
        new = (i>1 ? new "-" : "") range[i] + 5
    }
    sub(/>[^<]+</,">"new"<")
}
{ print }

$ awk -f tst.awk file
<parent>
<config>
<config1 label="Configuration1 Port">41502</config1>
<config2 label="Configuration2 Port">61160</pls_vimvom>
</config>
<ports>
<donttouch label="Base Port">1234</donttouch>
<op_var_tank label="Tank Port">41507</op_var_tank>
<pls_vimvom label="Local Port">61165</pls_vimvom>
<pls_xxx label="Local Port">11115-11125</pls_xxx>
</ports>
<extra>
More here
</extra>
</parent>

Note that you CAN use a range expression ( /<ports>/,/<\\/ports>/ ) in awk just like you MUST do in sed due to no support for variables, but setting a flag ( inPorts ) is always a better alternative as it provides much more flexibility if/when requirements change without needing duplicate conditions or a complete rewrite.