Reading text from flat file into variables

Question

I have some data stored in a flat file, similar to the data which is shown below. I need to be able to extract the data into variables, such as the variable AGE being equal to 24 and the variable user being equal to user01. I also need to be able to tell which database the data is for, such as db[0] and db[1] and so on.

db[0].age="24"
db[0].user="user01"
db[0].password="pasword01"
db[0].office="usa office 1"

db[1].age="44"
db[1].userID="user01"
db[1].userPW="password02"
db[1].office="uk office 2"

What I've done so far is to use awk to search for all instances of age and extract the number is the square brackets into an array.

databaseCount=($(awk '/'"age"'/' flatFile | cut -d "[" -f2 | cut -d "]" -f1))

I was then thinking using a similar awk to extract the text found in the brackets and put that data into an array.

age=($(awk '/'"dbUserAlias"'/' flatFile | cut -d\" -f2))

I was then planning on using the databaseCount to find the data for weach array, so I would know that the data found in element 0 of the age array is for database 0 and the data found in element 1 is ofr database 1.

The problem that I'm having is that some of the text found between the speech marks has spaces.

echo ${office[0]} 

Would return "uk" instead of "uk office 2".

Does anyone know how to fix this, or if there is a better way to extract the data?

Thank you.

Answer 1

如果以这种方式访问​​数组，则应将元素封装在双引号中，用以下代码替换代码：

age=($(printf "\"$(awk '/'"dbUserAlias"'/' flatFile | cut -d\" -f2)\""))

Answer 2

When the flatFile was formatted like

age="24"

you could have sourced that file.
When you ignore the db[n] , you can use

. <(cut -d"." -f2- flatFile)

Now we want to split up the file for each db and process the lines for each db:

for db in {0..5}; do
   sourcelines=$(grep "^db\[${db}\]" flatFile)
   if [[ -n "${sourcelines}" ]]; then
      echo "Database db[${db}]"
      . <(cut -d"." -f2- <<< "${sourcelines}" )
      # show the variables that have been set
      set | grep -E "^age=|^userID=|^userPW=|^office=" | sort
   fi
done

When you want to use different variables for different databases, you need a small change:

for db in {0..5}; do
   sourcelines=$(grep "^db\[${db}\]" flatFile)
   if [[ -n "${sourcelines}" ]]; then
      echo "Database db[${db}]"
      . <(echo -e "${sourcelines}" | tr "\[\]\." "_")
      # show the variables that have been set
      set | grep -E "^db_${db}_" | sort
   fi
done