SED, GREP, AWK, regex do not display content between two patterns until match the end of second patt-CodePudding

Example:

demo, demo-setga, Deployment (apps) has changed:
...
-           image: "imagedemo43"
            image: "imagedemo44"
...
demo, demo-app1, Deployment (apps) has been removed:
- # Source: /charts/app1/templates/deploy.yaml
- apiVersion: apps/v1
-       imagePullSecrets:
-         - name: demo-registry
 
demo, demo-app2, Deployment (apps) has changed:
...
-               value: 4.2.0
                value: 4.3.0
...
demo, demo-app4, Deployment (apps) has been added:
-
  apiVersion: apps/v1
  kind: Deployment
  metadata:
      heritage: Helm
        imagePullSecrets:
          - name: demo-registry
demo, demo-app9, Deployment (apps) has changed:
...
-               value: 2.2.0
                value: 4.3.0
...
demo, demo-app5, PodDisruptionBudget (policy) has been added:
-
  apiVersion: policy/v1beta1
  kind: PodDisruptionBudget
  metadata:
        app: app5
        release: demo
../helm_var/test/dev/secrets.yaml.dec
demo, demo-app8, PodDisruptionBudget (policy) has been added:
-
  # Source: test/charts/app5/templates/pdb.yaml
  apiVersion: policy/v1beta1
      matchLabels:
        app: app5
        release: demo
demo, demo-app9, Deployment (apps) has changed:
...
-               value: 4.1.0
                value: 9.3.0
...

Desired Output:

demo, demo-setga, Deployment (apps) has changed:
...
-           image: "imagedemo43"
            image: "imagedemo44"
...
demo, demo-app1, Deployment (apps) has been removed:
- # Source: /charts/app1/templates/deploy.yaml
- apiVersion: apps/v1
-       imagePullSecrets:
-         - name: demo-registry
 
demo, demo-app2, Deployment (apps) has changed:
...
-               value: 4.2.0
                value: 4.3.0
...
demo, demo-app9, Deployment (apps) has changed:
...
-               value: 2.2.0
                value: 4.3.0
...
../helm_var/test/dev/secrets.yaml.dec
demo, demo-app9, Deployment (apps) has changed:
...
-               value: 4.1.0
                value: 9.3.0
...

start the pattern with line: added:

end pattern: not all, just until they stop on the same block.

block example:

demo, demo-app4, Deployment (apps) has been added:
-
  apiVersion: apps/v1
  kind: Deployment
  metadata:
      heritage: Helm
        imagePullSecrets:
          - name: demo-registry

I tried this sed '/added:/,/\ ,\n/d' file, output not desired:

demo, demo-setga, Deployment (apps) has changed:
...
-           image: "imagedemo43991"
            image: "imagedemo44236"
...
demo, demo-app1, Deployment (apps) has been removed:
- # Source: /charts/app1/templates/deploy.yaml
- apiVersion: apps/v1
-       imagePullSecrets:
-         - name: demo-registry
 
demo, demo-app2, Deployment (apps) has changed:
...
-               value: 4.2.0
                value: 4.3.0
...

I tried this sed '/added:/,/\ /d' file, output not desired:

demo, demo-setga, Deployment (apps) has changed:
...
-           image: "imagedemo43991"
            image: "imagedemo44236"
...
demo, demo-app1, Deployment (apps) has been removed:
- # Source: /charts/app1/templates/deploy.yaml
- apiVersion: apps/v1
-       imagePullSecrets:
-         - name: demo-registry
 
demo, demo-app2, Deployment (apps) has changed:
...
-               value: 4.2.0
                value: 4.3.0
...
  kind: Deployment
  metadata:
      heritage: Helm
        imagePullSecrets:
          - name: demo-docker-registry
demo, demo-app9, Deployment (apps) has changed:
...
-               value: 4.2.0
                value: 4.3.0
...
  kind: PodDisruptionBudget
  metadata:
        app: app5
        release: demo
../helm_var/test/dev/secrets.yaml.dec
  apiVersion: policy/v1beta1
      matchLabels:
        app: app5
        release: demo
demo, demo-app9, Deployment (apps) has changed:
...
-               value: 4.2.0
                value: 4.3.0
...

CodePudding user response：

$ awk '/^[^ -]/{f=(/added:/)} !f' file
demo, demo-setga, Deployment (apps) has changed:
...
-           image: "imagedemo43"
            image: "imagedemo44"
...
demo, demo-app1, Deployment (apps) has been removed:
- # Source: /charts/app1/templates/deploy.yaml
- apiVersion: apps/v1
-       imagePullSecrets:
-         - name: demo-registry
 
demo, demo-app2, Deployment (apps) has changed:
...
-               value: 4.2.0
                value: 4.3.0
...
demo, demo-app9, Deployment (apps) has changed:
...
-               value: 2.2.0
                value: 4.3.0
...
../helm_var/test/dev/secrets.yaml.dec
demo, demo-app9, Deployment (apps) has changed:
...
-               value: 4.1.0
                value: 9.3.0
...

CodePudding user response：

This Perl does what you describe:

perl -0777 -pE 's/^.*added:[\s\S]*?(?=^[^ -])//mg' file

Prints:

demo, demo-setga, Deployment (apps) has changed:
...
-           image: "imagedemo43"
            image: "imagedemo44"
...
demo, demo-app1, Deployment (apps) has been removed:
- # Source: /charts/app1/templates/deploy.yaml
- apiVersion: apps/v1
-       imagePullSecrets:
-         - name: demo-registry
 
demo, demo-app2, Deployment (apps) has changed:
...
-               value: 4.2.0
                value: 4.3.0
...
demo, demo-app9, Deployment (apps) has changed:
...
-               value: 2.2.0
                value: 4.3.0
...
../helm_var/test/dev/secrets.yaml.dec
demo, demo-app9, Deployment (apps) has changed:
...
-               value: 4.1.0
                value: 9.3.0
...

Based on THIS regex.

OR, this awk:

awk 'BEGIN{f=1} 
     /added:$/{f=0; next}
     f==0 && /^[^- ]/ {f=1}
     f
' file 
# same output...

Or, if you really need 1 less line:

awk '/added:$/{f=1; next}
     f==1 && /^[^- ]/ {f=0}
     !f
' file
# same...