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nl.go
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nl.go
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/*
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License version 3 as
published by the Free Software Foundation.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package main
import "os"
import "fmt"
import "io/ioutil"
import "strings"
import flag "github.com/ogier/pflag"
func main() {
bFlag := flag.StringP("body-numbering", "b", "t", "style")
flag.Parse()
if len(flag.Args()) == 0 {
bytes, _ := ioutil.ReadAll(os.Stdin)
lines := strings.Split(string(bytes), "\n")
linecount := 0
for i := 0; i < len(lines)-1; i++ {
if *bFlag == "t" {
if len(strings.TrimSpace(lines[i])) > 0 {
linecount++
fmt.Printf("%6d %s\n", linecount, lines[i])
} else {
fmt.Println(lines[i])
}
} else {
linecount++
fmt.Printf("%6d %s\n", linecount, lines[i])
}
}
} else if len(flag.Args()) > 0 {
linecount := 0
for j := 0; j < len(flag.Args()); j++ {
bytes, _ := ioutil.ReadFile(flag.Arg(j))
lines := strings.Split(string(bytes), "\n")
for i := 0; i < len(lines)-1; i++ {
if *bFlag == "t" {
if len(strings.TrimSpace(lines[i])) > 0 {
linecount++
fmt.Printf("%6d %s\n", linecount, lines[i])
} else {
fmt.Println(lines[i])
}
} else {
linecount++
fmt.Printf("%6d %s\n", linecount, lines[i])
}
}
}
}
}