Need a script to edit file - php

Question

<?php
class DATABASE_CONFIG {
public $default = array(
'datasource' => 'Database/Mysql',
'persistent' => false,
'host' => 'hostname',
'login' => 'username',
'password' => 'password',
'database' => 'database_name',
'prefix' => '',
//'encoding' => 'utf8',
);
public $test = array(
'datasource' => 'Database/Mysql',
'persistent' => false,
'host' => 'hostname',
'login' => 'username',
'password' => 'password',
'database' => 'database_name',
'prefix' => '',
//'encoding' => 'utf8',
);
}
There are some default value in login,password and database. How can i write a script to edit the login,password and database ?

Answer 1

php file contains your example text:
kent$ awk '/login/{l++;if(l>1)gsub(/root/,"newLogin");}
/password/{p++;if(p>1)gsub(/xxx/,"newPwd");}
/database/{d++;if(d>1)gsub(/xxx/,"newDB");} 1' php
<?php
class DATABASE_CONFIG {
public $default = array(
'datasource' => 'Database/Mysql',
'persistent' => false,
'host' => 'localhost',
'login' => 'root',
'password' => 'xxx',
'database' => 'xxx',
'prefix' => '',
//'encoding' => 'utf8',
);
public $test = array(
'datasource' => 'Database/Mysql',
'persistent' => false,
'host' => 'localhost',
'login' => 'newLogin',
'password' => 'newPwd',
'database' => 'cake_test_db',
'prefix' => '',
//'encoding' => 'utf8',
);
}
this only changes the blocks after your $default block. and, only default value will be changed. e.g. in your $test, 'database' => 'cake_test_db' the value is not the default 'xxx', so it would not be changed.
if you like you can put new value in variable, and passing to awk with -v.
edit
if you want to change all values, (including $default block), it would be easier, check the lines below: (same as above, only defalut values (root, xxx,xxx) would be changed.
kent$ awk '/login/{gsub(/root/,"newLogin");}
/password/{gsub(/xxx/,"newPwd");}
/database/{gsub(/xxx/,"newDB");} 1' php
<?php
class DATABASE_CONFIG {
public $default = array(
'datasource' => 'Database/Mysql',
'persistent' => false,
'host' => 'localhost',
'login' => 'newLogin',
'password' => 'newPwd',
'database' => 'newDB',
'prefix' => '',
//'encoding' => 'utf8',
);
public $test = array(
'datasource' => 'Database/Mysql',
'persistent' => false,
'host' => 'localhost',
'login' => 'newLogin',
'password' => 'newPwd',
'database' => 'cake_test_db',
'prefix' => '',
//'encoding' => 'utf8',
);
}
edit2
this works for your new example in question.
sed '/login/{s/username/newLOGIN/}; /password/{s/password/newPWD/2}; /database/{s/database_name/newDB/}' php
<?php
class DATABASE_CONFIG {
public $default = array(
'datasource' => 'Database/Mysql',
'persistent' => false,
'host' => 'hostname',
'login' => 'newLOGIN',
'password' => 'newPWD',
'database' => 'newDB',
'prefix' => '',
//'encoding' => 'utf8',
);
public $test = array(
'datasource' => 'Database/Mysql',
'persistent' => false,
'host' => 'hostname',
'login' => 'newLOGIN',
'password' => 'newPWD',
'database' => 'newDB',
'prefix' => '',
//'encoding' => 'utf8',
);
}

Answer 2

#!/usr/bin/awk -f
BEGIN { FS="'"
usr[0] ="usr1" ; usr[1] = "user2"
pass[0] ="pass1" ; pass[1] = "pass2"
db[0] ="db1" ; db[1] = "db2"
}
{
if ($2 == "login") {
$0="\t'login' => '" usr[u] "',"
u++
}
if ($2 == "password") {
$0="\t'password' => '" pass[p] "',"
p++
}
if ($2 == "database") {
$0="\t'database' => '" db[d] "',"
d++
}
print
}