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use stdio for default input and output #22

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merged 1 commit into from
Sep 2, 2016
Merged

use stdio for default input and output #22

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2 changes: 2 additions & 0 deletions go-md2man.1.md
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Original file line number Diff line number Diff line change
Expand Up @@ -11,6 +11,8 @@ go-md2man 1 "January 2015" go-md2man "User Manual"
go-md2man converts standard markdown formatted documents into manpages. It is
written purely in Go so as to reduce dependencies on 3rd party libs.

By default, the input is stdin and the output is stdout.

# Example
Convert the markdown file "go-md2man.1.md" into a manpage.

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29 changes: 18 additions & 11 deletions md2man.go
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Expand Up @@ -9,16 +9,20 @@ import (
"github.com/cpuguy83/go-md2man/md2man"
)

var inFilePath = flag.String("in", "", "Path to file to be processed")
var outFilePath = flag.String("out", "", "Path to output processed file")
var inFilePath = flag.String("in", "", "Path to file to be processed (default: stdin)")
var outFilePath = flag.String("out", "", "Path to output processed file (default: stdout)")

func main() {
var err error
flag.Parse()

inFile, err := os.Open(*inFilePath)
if err != nil {
fmt.Println(err)
os.Exit(1)
inFile := os.Stdin
if *inFilePath != "" {
inFile, err = os.Open(*inFilePath)
if err != nil {
fmt.Println(err)
os.Exit(1)
}
}
defer inFile.Close()

Expand All @@ -30,12 +34,15 @@ func main() {

out := md2man.Render(doc)

outFile, err := os.Create(*outFilePath)
if err != nil {
fmt.Println(err)
os.Exit(1)
outFile := os.Stdout
if *outFilePath != "" {
outFile, err = os.Create(*outFilePath)
if err != nil {
fmt.Println(err)
os.Exit(1)
}
defer outFile.Close()
}
defer outFile.Close()
_, err = outFile.Write(out)
if err != nil {
fmt.Println(err)
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