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git.go
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git.go
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package main
import (
"bufio"
"fmt"
"os/exec"
)
func Git(args ...string) ([]string, error) {
cmd := exec.Command("git", args...)
stdout, err := cmd.StdoutPipe()
if err != nil {
return nil, err
}
if err := cmd.Start(); err != nil {
return nil, err
}
ret := make([]string, 0, 20)
scanner := bufio.NewScanner(stdout)
for scanner.Scan() {
ret = append(ret, scanner.Text())
}
if err := scanner.Err(); err != nil {
return nil, err
}
err = cmd.Wait()
return ret, err
}
func getLocalUserName() (string, error) {
lines, err := Git("config", "user.name")
if err != nil {
return "", err
}
if len(lines) == 0 {
return "", fmt.Errorf("failed to determine local user name")
}
return lines[0], nil
}
func getMergeBase(base, target string) (string, error) {
lines, err := Git("merge-base", base, target)
if err != nil {
return "", err
}
if len(lines) == 0 {
return "", fmt.Errorf("failed to determine merge base for %s and %s", base, target)
}
return lines[0], nil
}