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doc: Refactor man docs

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Performance impact (very strange):
benchmark                        old ns/op     new ns/op     delta
BenchmarkGenManToFile-4          30037         29001         -3.45%

benchmark                        old allocs     new allocs     delta
BenchmarkGenManToFile-4          77             89             +15.58%

benchmark                        old bytes     new bytes     delta
BenchmarkGenManToFile-4          9075          9651          +6.35%
This commit is contained in:
Albert Nigmatzianov 2017-04-24 20:40:15 +02:00
parent ea3c5beeff
commit de484eefb4
2 changed files with 46 additions and 29 deletions
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58
doc/man_docs.go
View file

@ -23,7 +23,7 @@ import (
"strings"
"time"
mangen "github.com/cpuguy83/go-md2man/md2man"
"github.com/cpuguy83/go-md2man/md2man"
"github.com/spf13/cobra"
"github.com/spf13/pflag"
)
@ -105,7 +105,7 @@ func GenMan(cmd *cobra.Command, header *GenManHeader, w io.Writer) error {
fillHeader(header, cmd.CommandPath())
b := genMan(cmd, header)
_, err := w.Write(mangen.Render(b))
_, err := w.Write(md2man.Render(b))
return err
}
@ -126,25 +126,25 @@ func fillHeader(header *GenManHeader, name string) {
}
}
func manPreamble(out io.Writer, header *GenManHeader, cmd *cobra.Command, dashedName string) {
func manPreamble(buf *bytes.Buffer, header *GenManHeader, cmd *cobra.Command, dashedName string) {
description := cmd.Long
if len(description) == 0 {
description = cmd.Short
}
fmt.Fprintf(out, `%% %s(%s)%s
buf.WriteString(fmt.Sprintf(`%% %s(%s)%s
%% %s
%% %s
# NAME
`, header.Title, header.Section, header.date, header.Source, header.Manual)
fmt.Fprintf(out, "%s \\- %s\n\n", dashedName, cmd.Short)
fmt.Fprintf(out, "# SYNOPSIS\n")
fmt.Fprintf(out, "**%s**\n\n", cmd.UseLine())
fmt.Fprintf(out, "# DESCRIPTION\n")
fmt.Fprintf(out, "%s\n\n", description)
`, header.Title, header.Section, header.date, header.Source, header.Manual))
buf.WriteString(fmt.Sprintf("%s \\- %s\n\n", dashedName, cmd.Short))
buf.WriteString("# SYNOPSIS\n")
buf.WriteString(fmt.Sprintf("**%s**\n\n", cmd.UseLine()))
buf.WriteString("# DESCRIPTION\n")
buf.WriteString(description + "\n\n")
}
func manPrintFlags(out io.Writer, flags *pflag.FlagSet) {
func manPrintFlags(buf *bytes.Buffer, flags *pflag.FlagSet) {
flags.VisitAll(func(flag *pflag.Flag) {
if len(flag.Deprecated) > 0 || flag.Hidden {
return
@ -156,34 +156,34 @@ func manPrintFlags(out io.Writer, flags *pflag.FlagSet) {
format = fmt.Sprintf("**--%s**", flag.Name)
}
if len(flag.NoOptDefVal) > 0 {
format = format + "["
format += "["
}
if flag.Value.Type() == "string" {
// put quotes on the value
format = format + "=%q"
format += "=%q"
} else {
format = format + "=%s"
format += "=%s"
}
if len(flag.NoOptDefVal) > 0 {
format = format + "]"
format += "]"
}
format = format + "\n\t%s\n\n"
fmt.Fprintf(out, format, flag.DefValue, flag.Usage)
format += "\n\t%s\n\n"
buf.WriteString(fmt.Sprintf(format, flag.DefValue, flag.Usage))
})
}
func manPrintOptions(out io.Writer, command *cobra.Command) {
func manPrintOptions(buf *bytes.Buffer, command *cobra.Command) {
flags := command.NonInheritedFlags()
if flags.HasFlags() {
fmt.Fprintf(out, "# OPTIONS\n")
manPrintFlags(out, flags)
fmt.Fprintf(out, "\n")
buf.WriteString("# OPTIONS\n")
manPrintFlags(buf, flags)
buf.WriteString("\n")
}
flags = command.InheritedFlags()
if flags.HasFlags() {
fmt.Fprintf(out, "# OPTIONS INHERITED FROM PARENT COMMANDS\n")
manPrintFlags(out, flags)
fmt.Fprintf(out, "\n")
buf.WriteString("# OPTIONS INHERITED FROM PARENT COMMANDS\n")
manPrintFlags(buf, flags)
buf.WriteString("\n")
}
}
@ -196,11 +196,11 @@ func genMan(cmd *cobra.Command, header *GenManHeader) []byte {
manPreamble(buf, header, cmd, dashCommandName)
manPrintOptions(buf, cmd)
if len(cmd.Example) > 0 {
fmt.Fprintf(buf, "# EXAMPLE\n")
fmt.Fprintf(buf, "```\n%s\n```\n", cmd.Example)
buf.WriteString("# EXAMPLE\n")
buf.WriteString(fmt.Sprintf("```\n%s\n```\n", cmd.Example))
}
if hasSeeAlso(cmd) {
fmt.Fprintf(buf, "# SEE ALSO\n")
buf.WriteString("# SEE ALSO\n")
seealsos := make([]string, 0)
if cmd.HasParent() {
parentPath := cmd.Parent().CommandPath()
@ -222,10 +222,10 @@ func genMan(cmd *cobra.Command, header *GenManHeader) []byte {
seealso := fmt.Sprintf("**%s-%s(%s)**", dashCommandName, c.Name(), header.Section)
seealsos = append(seealsos, seealso)
}
fmt.Fprintf(buf, "%s\n", strings.Join(seealsos, ", "))
buf.WriteString(strings.Join(seealsos, ", ") + "\n")
}
if !cmd.DisableAutoGenTag {
fmt.Fprintf(buf, "# HISTORY\n%s Auto generated by spf13/cobra\n", header.Date.Format("2-Jan-2006"))
buf.WriteString(fmt.Sprintf("# HISTORY\n%s Auto generated by spf13/cobra\n", header.Date.Format("2-Jan-2006")))
}
return buf.Bytes()
}

17
doc/man_docs_test.go
View file

@ -197,3 +197,20 @@ func AssertNextLineEquals(scanner *bufio.Scanner, expectedLine string) error {
return fmt.Errorf("AssertNextLineEquals: hit EOF before finding %#v", expectedLine)
}
func BenchmarkGenManToFile(b *testing.B) {
c := initializeWithRootCmd()
file, err := ioutil.TempFile("", "")
if err != nil {
b.Fatal(err)
}
defer os.Remove(file.Name())
defer file.Close()
b.ResetTimer()
for i := 0; i < b.N; i++ {
if err := GenMan(c, nil, file); err != nil {
b.Fatal(err)
}
}
}