Tool for working with semi-structured data like json or xml
Reading json file:
fmt.Println("\nReading json file:\n")
var tree dtree.JsonHandler
if err := tree.ReadFile("start.conf"); err != nil {
panic(err)
}
fmt.Printf("File \"%v\" exists and was read.\n\n", tree.FileName)
/* Output:
File "start.conf" exists and was read.
*/
if err := tree.Decode(); err == nil {
fmt.Println("tree.Value:", tree.Value)
}
/* Output:
tree.Value: map[root:map[Map:map[a:0 b:1 c:2 i0:3] Arr:[a b c 0 1 2]]]
*/Decoding string:
fmt.Println("\nReading json string:\n")
tree.Content = []byte(`{"Other" : {"a" : 0, "b" : 1, "c" : 2, "i0" : 3}}`)
if err := tree.Decode(); err == nil {
fmt.Println("tree.Value:", tree.Value)
}
/* Output:
tree.Value: map[Other:map[a:0 b:1 c:2 i0:3]]
*/Getting value, used path, remained path and error when path is right:
result := tree.Get("Other.a")
/* Result:
result.Value: 0
result.UsedPath: "Other.a"
result.RestPath: ""
result.Error: <nil>
*/Getting value, used path, remained path and error when path is wrong:
result = tree.Get("Other.d")
/* Result:
result.Value: <nil>
result.UsedPath: "Other"
result.RestPath: "d"
result.Error: Map has no element with key "d"!
*/Setting values:
result = tree.Set("Other.d", tree.NewValue(`"abc"`))
/* Result:
result.Value: abc
result.UsedPath: "Other.d"
result.RestPath: ""
result.Error: <nil>
*/
result = tree.Set("NewArr.2.1", tree.NewValue(`"new_value"`))
/* Result:
result.Value: new_value
result.UsedPath: "NewArr.2.1"
result.RestPath: ""
result.Error: <nil>
*/
result = tree.Set("NewArr.2.+", tree.NewValue(`"plus_value"`))
/* Result:
result.Value: plus_value
result.UsedPath: "NewArr.2.+"
result.RestPath: ""
result.Error: <nil>
*/Final tree:
fmt.Printf(`
Final tree.Value: "%v"
`, tree.Value )
/* Output:
Final tree.Value: map[Other:map[a:0 b:1 c:2 i0:3 d:abc] NewArr:[<nil> <nil> [<nil> new_value plus_value]]]
*/