Stop AWK from overwriting next section in file -


i have following awk script updates settings.py file.

original settings.py

databases = {     'default': {         'engine': 'django.db.backends.sqlite3',         'name': os.path.join(base_dir, 'db.sqlite3'),     } }   # password validation # https://docs.djangoproject.com/en/1.9/ref/settings/#auth-password-validators  auth_password_validators = [     {         'name': 'django.contrib.auth.password_validation.userattributesimilarityvalidator',     },     {         'name': 'django.contrib.auth.password_validation.minimumlengthvalidator',     },     {         'name': 'django.contrib.auth.password_validation.commonpasswordvalidator',     },     {         'name': 'django.contrib.auth.password_validation.numericpasswordvalidator',     }, ]

here awk script updates database section works perfectly.

awk 'function pr(sp, k, v){    # prints key-value pair indentation          printf "%s\047%s\047: \047%s\047,\n",sp,k,v;       }     begin {     db_user = environ["db_user"]     db_pass = environ["db_pass"]     db_name = environ["db_name"]     }      /sqlite/{ sub(/sqlite[0-9]*/,"mysql",$0) }      /name/{ sp=substr($0,1,index($0,"\047")-1);               print sp$1" \047" db_name "\047,";               pr(sp,"user", db_user); pr(sp,"password", db_pass);               pr(sp,"host","localhost"); pr(sp,"port",""); next       }1'

output of new settings.py after awk script, updating auth section below. 

databases = {     'default': {         'engine': 'django.db.backends.mysql',         'name': 'django',         'user': 'django',         'password': 'django',         'host': 'localhost',         'port': '',     } }   # password validation # https://docs.djangoproject.com/en/1.9/ref/settings/#auth-password-validators  auth_password_validators = [     {         'name': 'django',         'user': 'django',         'password': 'django',         'host': 'localhost',         'port': '',     },

how can stop awk overwriting auth section?

apply following update:

awk 'function pr(sp, k, v){    # prints key-value pair indentation          printf "%s\047%s\047: \047%s\047,\n",sp,k,v;       }     begin {     db_user = environ["db_user"]     db_pass = environ["db_pass"]     db_name = environ["db_name"]     }      /databases/{ f=1 }/auth_password_validators/{ f=0 }      /sqlite/{ sub(/sqlite[0-9]*/,"mysql",$0) }      /name/ && f{ sp=substr($0,1,index($0,"\047")-1);               print sp$1" \047" db_name "\047,";               pr(sp,"user", db_user); pr(sp,"password", db_pass);               pr(sp,"host","localhost"); pr(sp,"port",""); next       }1' settings.py

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