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fix: print commands in aligned columns

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Use the text/tabwriter to write the commands and their summaries in
aligned columns when printing the help text.
This commit is contained in:
Dan Anglin 2024-06-06 06:21:16 +01:00
parent 64ecc90499
commit c8187587a8
Signed by: dananglin
GPG key ID: 0C1D44CFBEE68638
1 changed files with 10 additions and 5 deletions
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15
cmd/enbas/usage.go
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@ -9,6 +9,7 @@ import (
"fmt" "fmt"
"slices" "slices"
"strings" "strings"
"text/tabwriter"
) )
func usageFunc(summaries map[string]string) func() { func usageFunc(summaries map[string]string) func() {
@ -31,18 +32,22 @@ func usageFunc(summaries map[string]string) func() {
builder.WriteString("VERSION:\n " + binaryVersion + "\n\n") builder.WriteString("VERSION:\n " + binaryVersion + "\n\n")
} }
builder.WriteString("USAGE:\n enbas [flags]\n enbas [command]\n\nCOMMANDS:") builder.WriteString("USAGE:\n enbas [flags]\n enbas [flags] [command]\n\nCOMMANDS:")
tableWriter := tabwriter.NewWriter(&builder, 0, 8, 0, '\t', 0)
for _, cmd := range cmds { for _, cmd := range cmds {
fmt.Fprintf(&builder, "\n %s\t%s", cmd, summaries[cmd]) fmt.Fprintf(tableWriter, "\n %s\t%s", cmd, summaries[cmd])
} }
builder.WriteString("\n\nFLAGS:\n --help\n print the help message\n") tableWriter.Flush()
builder.WriteString("\n\nFLAGS:\n --help\n print the help message")
flag.VisitAll(func(f *flag.Flag) { flag.VisitAll(func(f *flag.Flag) {
fmt.Fprintf(&builder, "\n --%s\n %s\n", f.Name, f.Usage) fmt.Fprintf(&builder, "\n --%s\n %s", f.Name, f.Usage)
}) })
builder.WriteString("\nUse \"enbas [command] --help\" for more information about a command.\n") builder.WriteString("\n\nUse \"enbas [command] --help\" for more information about a command.\n")
w := flag.CommandLine.Output() w := flag.CommandLine.Output()
fmt.Fprint(w, builder.String()) fmt.Fprint(w, builder.String())