use getopt for cli args

this allows long and short options

go.mod

@@ -13,6 +13,7 @@ require (
  github.com/mattn/go-isatty v0.0.17 // indirect
  github.com/mattn/go-runewidth v0.0.14 // indirect
  github.com/mitchellh/colorstring v0.0.0-20190213212951-d06e56a500db // indirect
+ github.com/pborman/getopt/v2 v2.1.0 // indirect
  github.com/rivo/uniseg v0.2.0 // indirect
  golang.org/x/sys v0.6.0 // indirect
  golang.org/x/term v0.6.0 // indirect

go.sum

@@ -15,6 +15,8 @@ github.com/mitchellh/colorstring v0.0.0-20190213212951-d06e56a500db h1:62I3jR2Em
 github.com/mitchellh/colorstring v0.0.0-20190213212951-d06e56a500db/go.mod h1:l0dey0ia/Uv7NcFFVbCLtqEBQbrT4OCwCSKTEv6enCw=
 github.com/mitchellh/go-wordwrap v1.0.1 h1:TLuKupo69TCn6TQSyGxwI1EblZZEsQ0vMlAFQflz0v0=
 github.com/mitchellh/go-wordwrap v1.0.1/go.mod h1:R62XHJLzvMFRBbcrT7m7WgmE1eOyTSsCt+hzestvNj0=
+github.com/pborman/getopt/v2 v2.1.0 h1:eNfR+r+dWLdWmV8g5OlpyrTYHkhVNxHBdN2cCrJmOEA=
+github.com/pborman/getopt/v2 v2.1.0/go.mod h1:4NtW75ny4eBw9fO1bhtNdYTlZKYX5/tBLtsOpwKIKd0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/rivo/uniseg v0.2.0 h1:S1pD9weZBuJdFmowNwbpi7BJ8TNftyUImj/0WQi72jY=

pokesay.go

@@ -2,10 +2,10 @@ package main
 
 import (
  "embed"
- "flag"
  "fmt"
  "strings"
 
+ "github.com/pborman/getopt/v2"
  "github.com/tmck-code/pokesay/src/pokedex"
  "github.com/tmck-code/pokesay/src/pokesay"
  "github.com/tmck-code/pokesay/src/timer"
@@ -29,33 +29,37 @@ var (
  CategoryRoot string = "build/assets/categories"
  MetadataRoot string = "build/assets/metadata"
  CowDataRoot string = "build/assets/cows"
+
+ verbose bool
 )
 
 func parseFlags() pokesay.Args {
  // list operations
- listCategories := flag.Bool("list-categories", false, "list all available categories")
- listNames := flag.Bool("list-names", false, "list all available names")
+ listCategories := getopt.BoolLong("list-categories", 'L', "list all available categories")
+ listNames := getopt.BoolLong("list-names", 'l', "list all available names")
 
  // selection/filtering
- category := flag.String("category", "", "choose a pokemon from a specific category")
- name := flag.String("name", "", "choose a pokemon from a specific name")
- width := flag.Int("width", 80, "the max speech bubble width")
+ category := getopt.StringLong("category", 'c', "", "choose a pokemon from a specific category")
+ name := getopt.StringLong("name", 'n', "", "choose a pokemon from a specific name")
+ width := getopt.IntLong("width", 'w', 80, "the max speech bubble width")
+
+ getopt.FlagLong(&verbose, "verbose", 'v', "print verbose output", "verbose")
 
  // speech bubble options
- noWrap := flag.Bool("no-wrap", false, "disable text wrapping (fastest)")
- tabWidth := flag.Int("tab-width", 4, "replace any tab characters with N spaces")
- noTabSpaces := flag.Bool("no-tab-spaces", false, "do not replace tab characters (fastest)")
- fastest := flag.Bool("fastest", false, "run with the fastest possible configuration (-nowrap -notabspaces)")
+ noWrap := getopt.BoolLong("no-wrap", 'W', "disable text wrapping Long(fastest)")
+ tabWidth := getopt.IntLong("tab-width", 't', 4, "replace any tab characters with N spaces")
+ noTabSpaces := getopt.BoolLong("no-tab-spaces", 's', "do not replace tab characters Long(fastest)")
+ fastest := getopt.BoolLong("fastest", 'f', "run with the fastest possible configuration Long(-nowrap -notabspaces)")
 
  // info box options
- japaneseName := flag.Bool("japanese-name", false, "print the japanese name")
- noCategoryInfo := flag.Bool("no-category-info", false, "do not print pokemon categories")
- drawInfoBorder := flag.Bool("info-border", false, "draw a border around the info line")
+ japaneseName := getopt.BoolLong("japanese-name", 'j', "print the japanese name")
+ noCategoryInfo := getopt.BoolLong("no-category-info", 'C', "do not print pokemon categories")
+ drawInfoBorder := getopt.BoolLong("info-border", 'b', "draw a border around the info line")
 
  // other option
- unicodeBorders := flag.Bool("unicode-borders", false, "use unicode characters to draw the border around the speech box (and info box if -info-border is enabled)")
+ unicodeBorders := getopt.BoolLong("unicode-borders", 'u', "use unicode characters to draw the border around the speech box Long(and info box if -info-border is enabled)")
 
- flag.Parse()
+ getopt.Parse()
  var args pokesay.Args
 
  if *fastest {