Package com.benesult.vivjson

Class CommandLine

java.lang.Object
com.benesult.vivjson.CommandLine
public class CommandLine extends Object
Command-line client of VivJson. 

 Usage: java -jar vivjson.jar [ [option] <code or file> ... ]

 option: - "+" is concatenated the previous code and the following
           code, such as
             "a=" + "[1, 2]" "return(a[0]+a[1])"
         - "-i" or "--stdin" reads from PIPE.
           For example, the following command shows "6".
             echo '{"a":3}' | java -jar vivjson.jar -i "return(a*2)"
           "-i=<name>" or "--stdin=<name>" gives variable name for
           value that read from PIPE.
           For example, the following command shows
           {"dog": 2, "cat": 3}.
             echo '[{"x":"dog","y":2},{"x":"cat","y":3}]' | \
             java -jar vivjson.jar -i=data \
             "z={},for(v in data){z[v.x]=v.y},print(z)"
         - "-j" or "--json" indicates that the following code is JSON.
           For example, error occurs because the following value is
           invalid as JSON.
             java -jar vivjson.jar -j '{"a":1+2}'
         - "-v" or "--version" shows version.

Environment: Java 9 or later

Last modified: 2025-03-28

Author:
Fumiaki Motegi (motegi@benesult.com)

  • Constructor Details

    • CommandLine

      public CommandLine()

  • Method Details

    • run

      public static void run(String[] arguments, @Nullable String[] outputs)
      Runs VivJson in command-line.
      Parameters:
      arguments - arguments from command-line
      outputs - stdout and stderr.
      1st element is a string of stdout if success, null otherwise.
      2nd element is null if success, a string of stderr otherwise.

    • main

      public static void main(String[] arguments)
      Runs VivJson in command-line.
      Parameters:
      arguments - arguments from command-line