add prep.Bash()

bash.go

@@ -0,0 +1,131 @@
+package prep
+
+// initializes logging and command line options
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+
+	"go.wit.com/dev/alexflint/arg"
+	"go.wit.com/lib/gui/shell"
+)
+
+var argBash ArgsBash
+
+/*
+This struct can be used with the go-arg package. These
+are the generic default command line arguments for the 'GUI' package
+*/
+type ArgsBash struct {
+	Bash bool `arg:"--bash"                               help:"generate bash completion"`
+}
+
+var myBash *BashAuto
+
+type BashAuto struct {
+	id     int  // should be unique
+	hidden bool // don't update the toolkits when it's hidden
+	Auto   func([]string)
+}
+
+func dumpjunk() {
+	fmt.Fprintln(os.Stderr, "")
+	fmt.Fprintln(os.Stderr, os.Args)
+	os.Exit(0)
+}
+
+// argname is the name of the executable
+func Bash(argname string, autocomplete func([]string)) *BashAuto {
+	if len(os.Args) > 1 && os.Args[1] == "--bash" {
+		doBash(argname)
+		os.Exit(0)
+	}
+
+	if len(os.Args) > 1 && os.Args[1] == "--auto-complete" {
+		autocomplete(os.Args[2:])
+		os.Exit(0)
+	}
+
+	arg.Register(&argBash)
+
+	myBash = new(BashAuto)
+
+	// parse go.Arg here?
+	return myBash
+}
+
+// makes a bash autocomplete file for your command
+func doBash(argname string) {
+	if homeDir, err := os.UserHomeDir(); err == nil {
+		filename := filepath.Join(homeDir, ".local/share/bash-completion/completions", argname)
+		if shell.Exists(filename) {
+		} else {
+			if f, err := os.OpenFile(filename, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644); err == nil {
+				f.Write([]byte(makeBashCompletionText(argname)))
+				f.Close()
+			}
+			fmt.Println("bash file created:", filename)
+		}
+	}
+
+	fmt.Println(makeBashCompletionText(argname))
+
+	fmt.Println("restart bash")
+	os.Exit(0)
+}
+
+func makeBashCompletionText(argname string) string {
+	var out string
+
+	out += fmt.Sprintf("# add this in your bashrc:\n")
+	out += fmt.Sprintf("\n")
+	out += fmt.Sprintf("# todo: add this to go-arg as a 'hidden' go-arg option --bash\n")
+	out += fmt.Sprintf("#\n")
+	out += fmt.Sprintf("# Put the below in the file: ~/.local/share/bash-completion/completions/%s\n", argname)
+	out += fmt.Sprintf("#\n")
+	out += fmt.Sprintf("# todo: make this output work/parse with:\n")
+	out += fmt.Sprintf("# complete -C %s --bash go\n", argname)
+	out += fmt.Sprintf("\n")
+	out += fmt.Sprintf("_%s_complete()\n", argname)
+	out += fmt.Sprintf("{\n")
+	out += fmt.Sprintf("	# sets local to this func vars\n")
+	out += fmt.Sprintf("	local cur prev all\n")
+	out += fmt.Sprintf("	cur=${COMP_WORDS[COMP_CWORD]}\n")
+	out += fmt.Sprintf("	prev=${COMP_WORDS[COMP_CWORD-1]}\n")
+	out += fmt.Sprintf("	all=${COMP_WORDS[@]}\n")
+	out += fmt.Sprintf("\n")
+	out += fmt.Sprintf("	# this is where we generate the go-arg output\n")
+	out += fmt.Sprintf("        GOARGS=$(%s --auto-complete \\'$prev\\' \\'$cur\\' $all)\n", argname)
+	out += fmt.Sprintf("\n")
+	out += fmt.Sprintf("	# this compares the command line input from the user\n")
+	out += fmt.Sprintf("	# to whatever strings we output\n")
+	out += fmt.Sprintf("        COMPREPLY=( $(compgen -W \"$GOARGS\" -- $cur) )  # THIS WORKS\n")
+	out += fmt.Sprintf("	return 0\n")
+	out += fmt.Sprintf("}\n")
+	out += fmt.Sprintf("complete -F _%s_complete %s\n", argname, argname)
+	out += fmt.Sprintf("\n")
+	out += fmt.Sprintf("# copy and paste the above into your bash shell should work\n")
+	return out
+}
+
+/*
+// prints help to STDERR // TODO: move everything below this to go-args
+func (args) doBashHelp() {
+	if argv.BashAuto[1] != "''" {
+		// if this is not blank, then the user has typed something
+		return
+	}
+	if argv.BashAuto[0] != ARGNAME {
+		// if this is not the name of the command, the user already started doing something
+		return
+	}
+	if argv.BashAuto[0] == ARGNAME {
+		me.pp.WriteHelp(os.Stderr)
+		return
+	}
+	fmt.Fprintln(os.Stderr, "")
+	fmt.Fprintln(os.Stderr, "hello world")
+	fmt.Fprintln(os.Stderr, "")
+}
+*/

gui.go

@@ -53,7 +53,7 @@ func postMustParse(s string) string {
 }
 
 func Gui() *gui.Node {
-	arg.Register(&argDebugger)
+	arg.Register(&argGui)
 
 	return gui.PreInit(postMustParse)
 }