Match multiple patterns in text file, copy and modify the matched line

Question

I want to match multiple patterns in text files on the same line, copy and modify the matched line. I want to duplicate every line that contains either the string "businessServices" or "BusinessServices". I don't care where the pattern to match appears in the line. I want to insert the copied lines at the end of each section (pattern). e.g. The string "import ... ;" indicated one section. i.e ";" indicated the end of that section. The string "{ ... }" indicated another section. i.e "}" indicated the end of that section. I want to edit files in place. The desired added line are these global substitutions:

s#businessServices#userServices#g
s#BusinessServices#UserServices#g

in:

import com.my.ClientBusinessServicesRequest;
import com.my.ClientBusinessServicesResponse;
import com.my.ClientOtherServicesRequest;
import com.my.ClientOtherServicesResponse;



ClientBusinessServicesResponse callClientBusinessServices(String businessServicesRequestKey) {

    ClientBusinessServicesRequest clientBusinessServicesRequest = new ClientBusinessServicesRequest();
    ClientBusinessServicesResponse clientBusinessServicesResponse = new ClientBusinessServicesResponse();

    clientBusinessServicesRequest.setKey(businessServicesRequestKey);
    clientBusinessServicesResponse = callClientBusinessServicesInternal(clientBusinessServicesRequest);
    return clientBusinessServicesResponse;
}

ClientOtherServicesResponse callClientOtherServices(String otherServicesRequestKey) {
}

Desired:

import com.my.ClientBusinessServicesRequest;
import com.my.ClientBusinessServicesResponse;
import com.my.ClientOtherServicesRequest;
import com.my.ClientOtherServicesResponse;
import com.my.ClientUserServicesRequest;
import com.my.ClientUserServicesResponse;



ClientBusinessServicesResponse callClientBusinessServices(String businessServicesRequestKey) {

    ClientBusinessServicesRequest clientBusinessServicesRequest = new ClientBusinessServicesRequest();
    ClientBusinessServicesResponse clientBusinessServicesResponse = new ClientBusinessServicesResponse();

    clientBusinessServicesRequest.setKey(businessServicesRequestKey);
    clientBusinessServicesResponse = callClientBusinessServicesInternal(clientBusinessServicesRequest);
    return clientBusinessServicesResponse;
}

ClientOtherServicesResponse callClientOtherServices(String otherServicesRequestKey) {
}

ClientUserServicesResponse callClientUserServices(String userServicesRequestKey) {

    ClientUserServicesRequest clientUserServicesRequest = new ClientUserServicesRequest();
    ClientUserServicesResponse clientUserServicesResponse = new ClientUserServicesResponse();

    clientUserServicesRequest.setKey(userServicesRequestKey);
    clientUserServicesResponse = callClientUserServicesInternal(clientUserServicesRequest);
    return clientUserServicesResponse;
}

I tried the following awk script. The result is very close, except some line breaks disappear. How to preserve the line breaks in the input file?

awk -i inplace '
/import.*;/ {
   origimportbuf = origimportbuf $0 ORS
}

/import.*usinessServices.*;/ {
   importbuf = importbuf $0 ORS
}

/Services.*{/,/}/ {
   origbuf = origbuf $0 ORS
}

/usinessServices.*{/,/}/ {
   buf = buf $0 ORS
}

END {
   printf "%s", origimportbuf

   gsub(/BusinessServices/,"UserServices",importbuf)
   gsub(/businessServices/,"userServices",importbuf)
   printf "%s", importbuf
   
   printf "%s", origbuf
   
   gsub(/BusinessServices/,"UserServices",buf)
   gsub(/businessServices/,"userServices",buf)
   printf "%s", buf
};
'  in.txt

Actual Output (some line breaks disappear):

import com.my.ClientBusinessServicesRequest;
import com.my.ClientBusinessServicesResponse;
import com.my.ClientOtherServicesRequest;
import com.my.ClientOtherServicesResponse;
import com.my.ClientUserServicesRequest;
import com.my.ClientUserServicesResponse;
ClientBusinessServicesResponse callClientBusinessServices(String businessServicesRequestKey) {

    ClientBusinessServicesRequest clientBusinessServicesRequest = new ClientBusinessServicesRequest();
    ClientBusinessServicesResponse clientBusinessServicesResponse = new ClientBusinessServicesResponse();

    clientBusinessServicesRequest.setKey(businessServicesRequestKey);
    clientBusinessServicesResponse = callClientBusinessServicesInternal(clientBusinessServicesRequest);
    return clientBusinessServicesResponse;
}
ClientOtherServicesResponse callClientOtherServices(String otherServicesRequestKey) {
}
ClientUserServicesResponse callClientUserServices(String userServicesRequestKey) {

    ClientUserServicesRequest clientUserServicesRequest = new ClientUserServicesRequest();
    ClientUserServicesResponse clientUserServicesResponse = new ClientUserServicesResponse();

    clientUserServicesRequest.setKey(userServicesRequestKey);
    clientUserServicesResponse = callClientUserServicesInternal(clientUserServicesRequest);
    return clientUserServicesResponse;
}

Answer 1

I don't understand the logic about when to print what blocks of modified lines (in your example sometimes it's immediately after the block, sometimes it's after a subsequent block or maybe at the end of file) and the output for the block that's not inside a function isn't what you want but here's a start that shows how to work on functions that in combination with your original script gives you what you need to build on:

$ cat tst.awk
/{$/ { inFunc = 1 }
{ buf = buf $0 ORS }
inFunc && /^}/ { inFunc = 0 }

!NF && !inFunc {
    orig = buf
    printf "%s", buf
    gsub(/BusinessServices/,"UserServices",buf)
    gsub(/businessServices/,"userServices",buf)
    if ( buf != orig ) {
        printf "%s", buf
    }
    buf = ""
}

$ awk -f tst.awk file
import com.my.ClientBusinessServicesRequest;
import com.my.ClientBusinessServicesResponse;
import com.my.ClientOtherServicesRequest;
import com.my.ClientOtherServicesResponse;

import com.my.ClientUserServicesRequest;
import com.my.ClientUserServicesResponse;
import com.my.ClientOtherServicesRequest;
import com.my.ClientOtherServicesResponse;

ClientBusinessServicesResponse callClientBusinessServices(String businessServicesRequestKey) {

    ClientBusinessServicesRequest clientBusinessServicesRequest = new ClientBusinessServicesRequest();
    ClientBusinessServicesResponse clientBusinessServicesResponse = new ClientBusinessServicesResponse();

    clientBusinessServicesRequest.setKey(businessServicesRequestKey);
    clientBusinessServicesResponse = callClientBusinessServicesInternal(clientBusinessServicesRequest);
    return clientBusinessServicesResponse;
}

ClientUserServicesResponse callClientUserServices(String userServicesRequestKey) {

    ClientUserServicesRequest clientUserServicesRequest = new ClientUserServicesRequest();
    ClientUserServicesResponse clientUserServicesResponse = new ClientUserServicesResponse();

    clientUserServicesRequest.setKey(userServicesRequestKey);
    clientUserServicesResponse = callClientUserServicesInternal(clientUserServicesRequest);
    return clientUserServicesResponse;
}

ClientOtherServicesResponse callClientOtherServices(String otherServicesRequestKey) {
}