init

main.go

@@ -0,0 +1,55 @@
+// command svsort sorts lines of text by semver at beginning of line
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"log"
+	"os"
+	"sort"
+	"strings"
+
+	"github.com/blang/semver"
+)
+
+type line struct {
+	v    semver.Version
+	line string
+}
+
+type lines []line
+
+func (l lines) Len() int           { return len(l) }
+func (l lines) Swap(i, j int)      { l[i], l[j] = l[j], l[i] }
+func (l lines) Less(i, j int) bool { return l[i].v.LT(l[j].v) }
+
+func main() {
+	s := bufio.NewScanner(os.Stdin)
+
+	ls := lines{}
+	for s.Scan() {
+		f := strings.Fields(s.Text())
+		if len(f) < 2 {
+			continue
+		}
+		v, err := semver.ParseTolerant(f[0])
+		if err != nil {
+			log.Printf("%v: %q", err, s.Text())
+			continue
+		}
+		l := line{
+			v:    v,
+			line: s.Text(),
+		}
+		ls = append(ls, l)
+	}
+
+	if err := s.Err(); err != nil {
+		log.Fatalf("scan: %v")
+	}
+
+	sort.Sort(ls)
+	for _, l := range ls {
+		fmt.Printf("%v\n", l.line)
+	}
+}