How to read particular value from file?

SystemVerilog
1

Lets say my file has few lines.
Mango=6
Apple=5 Grape=4

I know how to read line by line
But don’t know how to read value of Grape where ever it may be inside the file.
Can anyone help me?

2

In reply to Adarsh Santhosh:
Some tools have added built-in string methods like as show below. If not, a number of other libraries packages like UVM and SVunit.

module top;
   string str;
   int FILE;
   initial begin
      FILE=$fopen("fscanf.txt","r");
      while($fscanf(FILE,"%s",str) == 1)
	 if(str.match("([a-zA-Z]+)=([0-9]+)"))
	    $display("name: %s value: %d",str.backref(0), str.backref(1));
   end 	    
endmodule : top
3

In reply to dave_59:

Im using questasim
i think it doesnt have backref and match optons for string.

its showing the below text

Field/method name (match) not in ‘str’
** Error: example.sv(17): Field/method name (backref) not in ‘str’

4

In reply to Adarsh Santhosh:

Unless get a later version, you’ll have to search for a DPI package that does this for you, or write the code yourself. The UVN package has this, and even if you do not have a UVM testbench, you can still import the package and use the routines there.

5

In reply to dave_59:

Can I somehow search for a particular string in a file?

6

In reply to dave_59:

Or can u point me to somewhere I can learn more about file operations like $fopen ,$fscanf etc ?

7

In reply to Adarsh Santhosh:

https://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=8299593

SystemVerilog is not a text processing language.