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gitignore.go
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gitignore.go
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package main
import (
"bytes"
"errors"
"os/exec"
"strings"
)
// GitIgnoreSupported indicates whether the GitIgnored function is available.
var GitIgnoreSupported = false
func initGitignore() {
if _, err := exec.LookPath("git"); err != nil {
logger.Printf("gitignore not supported: %v\n", err)
} else {
GitIgnoreSupported = true
}
}
// GitIgnored checks if the given path is gitignored.
func GitIgnored(path string) (bool, error) {
cmd := exec.Command("git", "check-ignore", "-q", path)
var stdoutBuf bytes.Buffer
var stderrBuf bytes.Buffer
cmd.Stdout = &stdoutBuf
cmd.Stderr = &stderrBuf
// Run() returns the "exit status 1" error when the file isn't ignored so
// that's not an error for us.
if err := cmd.Run(); err != nil && err.Error() != "exit status 1" {
logger.Printf("gitignore error: %v\n", err)
return false, err
}
stderr := stderrBuf.String()
if stderr != "" {
err := errors.New(stderr)
logger.Printf("gitignore error: %v\n", err)
return false, err
}
stdout := stdoutBuf.String()
if stdout != "" {
err := errors.New(stdout)
logger.Printf("gitignore error: %v\n", err)
return false, err
}
exitCode := cmd.ProcessState.ExitCode()
if exitCode == 0 {
return true, nil
}
// git does not consider the .git folder and contents to be ignored.
if exitCode == 1 && strings.HasPrefix(path, ".git") {
return true, nil
}
return false, nil
}