64 lines
1.3 KiB
Go
Executable File
64 lines
1.3 KiB
Go
Executable File
package notes
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import (
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"bufio"
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"bytes"
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"errors"
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"fmt"
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"io"
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"io/ioutil"
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"gitea.inhome.blapointe.com/local/notes-server/filetree"
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"os"
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"path"
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"strings"
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)
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func (n *Notes) Comment(urlPath string, lineno int, comment string) error {
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p := filetree.NewPathFromURL(urlPath)
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if stat, err := os.Stat(p.Local); err != nil {
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return errors.New("cannot comment as it does not exist")
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} else if stat.IsDir() {
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return errors.New("cannot comment on a dir")
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}
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f, err := os.Open(p.Local)
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if err != nil {
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return err
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}
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defer f.Close()
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f2, err := ioutil.TempFile(os.TempDir(), path.Base(p.Local)+".*")
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if err != nil {
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return err
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}
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defer f2.Close()
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reader := bufio.NewReader(f)
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writer := io.Writer(f2)
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for i := 0; i < lineno+1; i++ {
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line, _, err := reader.ReadLine()
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if err == io.EOF {
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break
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}
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if err != nil {
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return err
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}
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_, err = io.Copy(writer, bytes.NewReader(line))
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if err != nil {
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return err
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}
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_, err = writer.Write([]byte("\n"))
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if err != nil {
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return err
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}
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}
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formatted := fmt.Sprintf("> *%s*\n\n", comment)
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_, err = io.Copy(writer, strings.NewReader(formatted))
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if err != nil {
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return err
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}
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_, err = io.Copy(writer, reader)
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if err != nil && err != io.EOF {
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return err
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}
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f2.Close()
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return os.Rename(f2.Name(), p.Local)
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}
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