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package main
import (
"fmt"
"os"
"strconv"
"strings"
)
type Commit struct {
num int // mercurial revision number
node string // mercurial hash
parent string // hash of commit's parent
user string // author's Name <email>
date string // date of commit
desc string // description
}
// getCommit returns details about the Commit specified by the revision hash
func getCommit(rev string) (c Commit, err os.Error) {
defer func() {
if err != nil {
err = fmt.Errorf("getCommit: %s: %s", rev, err)
}
}()
parts, err := getCommitParts(rev)
if err != nil {
return
}
num, err := strconv.Atoi(parts[0])
if err != nil {
return
}
parent := ""
if num > 0 {
prev := strconv.Itoa(num - 1)
if pparts, err := getCommitParts(prev); err == nil {
parent = pparts[1]
}
}
user := strings.Replace(parts[2], "<", "<", -1)
user = strings.Replace(user, ">", ">", -1)
return Commit{num, parts[1], parent, user, parts[3], parts[4]}, nil
}
func getCommitParts(rev string) (parts []string, err os.Error) {
const format = "{rev}>{node}>{author|escape}>{date}>{desc}"
s, _, err := runLog(nil, "", goroot,
"hg", "log", "-r", rev, "-l", "1", "--template", format)
if err != nil {
return
}
return strings.Split(s, ">", 5), nil
}
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