Dan Anglin
cc5e3f0044
- Move the build and application information to the internal info package. - Move the user agent and redirect URI string to the internal client package.
53 lines
1.1 KiB
Go
53 lines
1.1 KiB
Go
package usage
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import (
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"flag"
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"slices"
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"strings"
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"codeflow.dananglin.me.uk/apollo/enbas/internal/info"
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)
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// ExecutorUsageFunc returns the function used to print a command's help page.
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func ExecutorUsageFunc(name, summary string, flagset *flag.FlagSet) func() {
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return func() {
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var builder strings.Builder
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builder.WriteString("SUMMARY:")
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builder.WriteString("\n " + name + " - " + summary)
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builder.WriteString("\n\nUSAGE:")
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builder.WriteString("\n " + info.ApplicationName + " " + name)
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flagMap := make(map[string]string)
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flagset.VisitAll(func(f *flag.Flag) {
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flagMap[f.Name] = f.Usage
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})
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if len(flagMap) > 0 {
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flags := make([]string, len(flagMap))
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ind := 0
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for f := range flagMap {
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flags[ind] = f
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ind++
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}
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slices.Sort(flags)
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builder.WriteString(" [flags]")
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builder.WriteString("\n\nFLAGS:")
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for _, value := range flags {
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builder.WriteString("\n --" + value)
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builder.WriteString("\n " + flagMap[value])
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}
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}
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builder.WriteString("\n")
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w := flag.CommandLine.Output()
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_, _ = w.Write([]byte(builder.String()))
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}
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}
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