| Don Newton | 2bdfd3f | 2019-04-08 17:06:33 -0400 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2018-present Open Networking Foundation |
| 3 | |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package util |
| 18 | |
| 19 | import ( |
| 20 | "fmt" |
| 21 | "os" |
| 22 | ) |
| 23 | |
| 24 | /* |
| 25 | ProcessTable parses table structure and executes functions |
| 26 | */ |
| 27 | func ProcessTable(functionTable map[string]func(bool), inputPrompt string) { |
| 28 | keys := []string{} |
| 29 | for k := range functionTable { |
| 30 | keys = append(keys, k) |
| 31 | } |
| 32 | var b = make([]byte, 1) |
| 33 | input := "" |
| 34 | fmt.Print(inputPrompt) |
| 35 | for { |
| 36 | os.Stdin.Read(b) |
| 37 | char := string(b) |
| 38 | if char == "\t" || char == "\n" || char == "?" { |
| 39 | fmt.Println("") |
| 40 | ret, prompt := Test(input, keys) |
| 41 | if len(ret) == 1 { |
| 42 | input = ret[0] |
| 43 | if input == "exit" { |
| 44 | return |
| 45 | } |
| 46 | if char == "\n" { |
| 47 | Route(input, functionTable, true) |
| 48 | } else { |
| 49 | Route(input, functionTable, false) |
| 50 | } |
| 51 | input = "" |
| 52 | fmt.Print(inputPrompt) |
| 53 | } else if len(ret) == 0 { |
| 54 | input = "" |
| 55 | fmt.Println("\nInvalid Input ") |
| 56 | fmt.Print(inputPrompt) |
| 57 | } else if len(ret) == 0 { |
| 58 | } else { |
| 59 | |
| 60 | fmt.Println(ret) |
| 61 | input = prompt |
| 62 | fmt.Print(inputPrompt) |
| 63 | fmt.Print(prompt) |
| 64 | } |
| 65 | } else if char == " " { |
| 66 | _, ok := functionTable[input] |
| 67 | if ok { |
| 68 | Route(input, functionTable, false) |
| 69 | fmt.Print(inputPrompt) |
| 70 | input = "" |
| 71 | } else { |
| 72 | ret, prompt := Test(input, keys) |
| 73 | if len(ret) == 1 { |
| 74 | input = ret[0] |
| 75 | Route(input, functionTable, false) |
| 76 | input = "" |
| 77 | fmt.Print(inputPrompt) |
| 78 | } else if len(ret) == 0 { |
| 79 | input = "" |
| 80 | fmt.Println("\nInvalid Input ") |
| 81 | fmt.Print(inputPrompt) |
| 82 | } else { |
| 83 | |
| 84 | fmt.Println(ret) |
| 85 | input = prompt |
| 86 | fmt.Print(inputPrompt + input) |
| 87 | } |
| 88 | } |
| 89 | |
| 90 | } else if b[0] == 127 || char == "\b" { |
| 91 | sz := len(input) |
| 92 | |
| 93 | if sz > 0 { |
| 94 | fmt.Print("\b \b") |
| 95 | input = input[:sz-1] |
| 96 | } |
| 97 | } else { |
| 98 | fmt.Print(char) |
| 99 | input += char |
| 100 | } |
| 101 | } |
| 102 | } |