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annotate src/entai_app/entai_app.go @ 3:ca866a38a6a0

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Implement intaractive-mode & setting from config-file.
author pyon@macmini
date Sun, 16 Oct 2016 09:54:33 +0900
parents 451c99c1d9de
children e4066309b04f
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1 /****************************************************************************/
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2 /* Entai_app.go */
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3 /* Last Change: 2016-10-15 Sat 19:29:24. */
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4 /* By T.Mutoh */
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5 /****************************************************************************/
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6
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7 package main
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8
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9 import (
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10 "bufio"
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11 "encoding/csv"
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12 "flag"
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13 "fmt"
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14 "io"
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15 "log"
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16 "os"
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17 "strconv"
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18 "strings"
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19 "time"
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20
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21 "entai"
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22 )
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23
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24 var ver = "0.4"
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25 var e entai.Entai
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26
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27 func main() {
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28
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29 // arguments
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30 h := flag.Bool( "h", false, "help" )
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31 c := flag.String( "c", "", "config csv file" )
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32 r := flag.Bool( "r", false, "print rate" )
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33 b := flag.Bool( "b", false, "batch mode" )
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34 l := flag.Bool( "l", false, "1-liner mode" )
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35 v := flag.Bool( "v", false, "print verbose in 1-liner mode")
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36 i := flag.Bool( "i", false, "print input value in 1-liner mode")
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37 d := flag.Bool( "d", false, "intaracitve mode")
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38 s := flag.Bool( "s", false, "server mode" )
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39 p := flag.Int( "p", 8080, "listen port in server mode" )
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40
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41 flag.Parse()
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42
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43 if flag.NFlag() == 0 {
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44 printTile()
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45 flag.PrintDefaults()
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46 fmt.Fprint( os.Stderr, "\n" )
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47 os.Exit( 1 )
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48 }
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49
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50 // Setting rates
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51 if *c == "" {
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52 e.DefaultRates()
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53 } else {
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54 f, err := os.Open( *c ); if err != nil {
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55 fmt.Fprintf( os.Stderr, "cannot open config-file : %v\n", err )
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56 os.Exit( 1 )
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57 }
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58
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59 r := csv.NewReader( f )
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60 r.Comment = '#'
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61 r.TrimLeadingSpace = true
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62 for {
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63 record, err := r.Read()
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64 if err == io.EOF {
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65 break
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66 } else if err != nil {
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67 log.Fatal( err )
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68 }
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69 e.AddRates( record[1], record[2], record[3] )
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70 }
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71 f.Close()
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72
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73 }
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74
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75 switch {
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76
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77 // Show examples
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78 case *h :
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79 printTile()
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80 fmt.Fprint( os.Stderr, "1-liner mode:\n" )
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81 fmt.Fprint( os.Stderr, "> entai_app -l 30000 20160731 20161224\n\n" )
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82 fmt.Fprint( os.Stderr, "> entai_app -i -l 29000 20160731 20161224\n\n" )
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83 fmt.Fprint( os.Stderr, "> entai_app -i -v -l 15000 20160731 20161224\n\n" )
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84 fmt.Fprint( os.Stderr, "> entai_app -c conf/entai.conf -l 15000 20160731 20161224\n\n" )
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85 fmt.Fprint( os.Stderr, "batch mode:\n" )
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86 fmt.Fprint( os.Stderr, "> entai_app -b 1.csv 2.csv ...\n\n" )
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87 fmt.Fprint( os.Stderr, "server mode:\n" )
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88 fmt.Fprint( os.Stderr, "> entai_app -s -p 3000\n" )
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89 os.Exit( 1 )
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90
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91 // Show rates
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92 case *r :
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93 printTile()
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94 fmt.Fprint( os.Stderr, e.GetRates() )
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95 os.Exit( 0 )
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96
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97 // Server-mode ( not implement )
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98 case *s :
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99 *p = 8080
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100 fmt.Fprint( os.Stderr, "server mode is not implemented.\n" )
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101 os.Exit( 1 )
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102
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103 // Intaractive-mode
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104 case *d :
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105 printTile()
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106 fmt.Print( e.GetRates() )
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107 fmt.Print( "-----------\n\n" )
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108
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109 var t, d, p string
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110 for {
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111 t = getFromTerminal( "Input Tax ", t )
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112 d = getFromTerminal( "Input Due ", d )
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113 p = getFromTerminal( "Input Paid", p )
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114
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115 result, detail, err := processEntai( t, d, p )
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116 if err != nil {
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117 fmt.Printf( "%v\n", err )
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118 }
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119 fmt.Printf( " = %d", result )
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120
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121 fmt.Print( "\t\t\t... Continue [Enter] / Detail [1] / Quit [9] ? " )
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122 input := bufio.NewScanner( os.Stdin )
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123 input.Scan()
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124 switch input.Text() {
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125 case "1" :
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126 fmt.Printf( " = %s\n\n", detail )
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127 case "9" :
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128 os.Exit( 0 )
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129 default :
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130 }
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131 }
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132
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133 // 1-Liner-mode
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134 case *l :
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135 if *i {
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136 fmt.Printf( "%s,%s,%s,", flag.Arg(0), flag.Arg(1), flag.Arg(2) )
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137 }
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138
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139 result, detail, err := processEntai( flag.Arg(0), flag.Arg(1), flag.Arg(2) )
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140 if err != nil {
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141 fmt.Fprintf( os.Stderr, "%s : %v\n", detail, err )
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142 os.Exit( 1 )
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143 }
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144 fmt.Print( result )
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145
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146 if *v {
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147 fmt.Print( ",", detail )
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148 }
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149 fmt.Print( "\n" )
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150
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151 os.Exit( 0 )
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152
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153 // Batch-mode
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154 case *b :
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155 files := flag.Args()
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156
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157 if len( files ) == 0 {
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158 fmt.Fprint( os.Stderr, "no input file.\n" )
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159 os.Exit( 1 )
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160 } else {
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161
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162 for _, file := range files {
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163 f, err := os.Open( file ); if err != nil {
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164 fmt.Fprintf( os.Stderr, "cannot open file.[%v]\n", err )
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165 os.Exit( 1 )
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166 }
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167
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168 input := bufio.NewScanner( f )
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169 b := bufio.NewWriter( os.Stdout )
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170 for input.Scan() {
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171 s := strings.Split( input.Text(), "," )
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172 if strings.HasPrefix( input.Text(), "#" ) {
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173 if strings.Contains( input.Text(), "@@" ) {
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174 buf := strings.Replace( input.Text(), "#", "", 1 )
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175 buf = strings.Replace( buf, "@@", "", 1 )
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176 fmt.Fprintf( b, "%s\n", buf )
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177 }
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178 continue
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179 }
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180 result, detail, err := processEntai( s[0], s[1], s[2] )
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181 if err != nil {
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182 fmt.Fprintf( os.Stderr, "%s : %v\n", detail, err )
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183 os.Exit( 1 )
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184 }
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185 fmt.Fprintf( b, "%s,%s,%s,%d,%s\n", s[0], s[1], s[2], result, detail )
1
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186 }
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187 b.Flush()
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188 f.Close()
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189 }
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190 os.Exit( 0 )
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191 }
0
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192 }
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193 }
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194
3
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195 // Subroutines
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196 func processEntai( tax, due, paid string ) ( int, string, error ) {
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197 t, msg, err := validInt( tax ); if err != nil {
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198 return -1, msg, err
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199 }
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200
2
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201 d, msg, err := validDate( due ); if err != nil {
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202 return -1, msg, err
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203 }
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204 p, msg, err := validDate( paid ); if err != nil {
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205 return -1, msg, err
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206 }
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207
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208 e.Set( d, p, t )
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209 result, detail := e.Result()
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210
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211 return result, detail, nil
0
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212 }
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213
2
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214 func validDate( s string ) ( time.Time, string, error ) {
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215 layout := "20060102"
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216 t, err := time.Parse( layout, s ); if err != nil {
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217 return t, "bad date format.", err
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218 }
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219 return t, "", nil
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220 }
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221
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222 func validInt( s string ) ( int, string, error ) {
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223 i, err := strconv.Atoi( s )
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224 if err != nil || i < 0 {
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225 return -1, "bad money format.", err
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226 }
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227 return i, "", nil
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228 }
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229
3
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230 func getFromTerminal( prompt, last string ) ( string ) {
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231 fmt.Printf( "%s > ", prompt )
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232 input := bufio.NewScanner( os.Stdin )
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233 input.Scan()
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234 s := input.Text()
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235 if s == "." {
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236 s = last
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237 fmt.Printf( "%s > %s\n", prompt, s )
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238 }
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239 return s
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240 }
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241
2
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242 func printTile() {
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243 fmt.Fprint( os.Stderr, "\n==================================================\n" )
3
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244 fmt.Fprintf( os.Stderr, " Entai_app ver %s ( 2016.10.19 ) - since 2016\n", ver )
2
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245 fmt.Fprint( os.Stderr, "==================================================\n\n" )
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246 }
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247