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package gitpb
// functions to import and export the protobuf
// data to and from config files
import (
"errors"
"os"
"path/filepath"
"go.wit.com/log"
)
// write to ~/.config/forge/ unless ENV{FORGE_CONFIG} is set
func (all *Repos) ConfigSave() error {
if os.Getenv("FORGE_CONFIG") == "" {
homeDir, _ := os.UserHomeDir()
fullpath := filepath.Join(homeDir, ".config/forge")
os.Setenv("FORGE_CONFIG", fullpath)
}
if all == nil {
log.Warn("gitpb all == nil")
return errors.New("gitpb.ConfigSave() all == nil")
}
data, err := all.Marshal()
if err != nil {
log.Info("gitpb proto.Marshal() failed len", len(data), err)
return err
}
log.Info("gitpb.ConfigSave() repos.Marshal() worked len", len(data))
configWrite("repos.pb", data)
return nil
}
// load the ~/.config/forge/ files
func (all *Repos) ConfigLoad() error {
if os.Getenv("FORGE_CONFIG") == "" {
homeDir, _ := os.UserHomeDir()
fullpath := filepath.Join(homeDir, ".config/forge")
os.Setenv("FORGE_CONFIG", fullpath)
}
var data []byte
var err error
if data, err = loadFile("repos.pb"); err != nil {
// something went wrong loading the file
return err
}
if data != nil {
// this means the forge.pb file exists and was read
if len(data) == 0 {
// todo: error out if the file is empty?
// try forge.text & forge.json?
log.Warn("gitpb.ConfigLoad() repos.pb is empty")
return errors.New("gitpb.ConfigLoad() repos.pb is empty")
}
if all.Repos == nil {
log.Warn("gitpb.ConfigLoad() all.Repos == nil")
} else {
log.Warn("gitpb.ConfigLoad() all.Repos.Len()", all.Len())
}
if err = all.Unmarshal(data); err != nil {
log.Warn("gitpb.ConfigLoad() failed", err)
if all.Repos == nil {
log.Warn("gitpb.ConfigLoad() all.Repos == nil")
} else {
log.Warn("gitpb.ConfigLoad() all.Repos.Len()", all.Len())
log.Warn("gitpb.ConfigLoad() trying to resave the file")
all.ConfigSave()
}
return err
}
log.Info("gitpb.Init()", len(all.Repos), "repos in ~/.config/forge/repos.pb")
return nil
}
return nil
}
func loadFile(filename string) ([]byte, error) {
fullname := filepath.Join(os.Getenv("FORGE_CONFIG"), filename)
data, err := os.ReadFile(fullname)
if errors.Is(err, os.ErrNotExist) {
// if file does not exist, just return nil. this
// will cause ConfigLoad() to try the next config file like "forge.text"
// because the user might want to edit the .config by hand
return nil, nil
}
if err != nil {
// log.Info("open config file :", err)
return nil, err
}
return data, nil
}
func configWrite(filename string, data []byte) error {
fullname := filepath.Join(os.Getenv("FORGE_CONFIG"), filename)
cfgfile, err := os.OpenFile(fullname, os.O_RDWR|os.O_CREATE, 0666)
defer cfgfile.Close()
if err != nil {
log.Warn("open config file :", err)
return err
}
if filename == "forge.text" {
// add header
cfgfile.Write([]byte("# this file is automatically re-generated from forge.pb, however,\n"))
cfgfile.Write([]byte("# if you want to edit it by hand, you can:\n"))
cfgfile.Write([]byte("# stop forge; remove forge.pb; edit forge.text; start forge\n"))
cfgfile.Write([]byte("# this will cause the default behavior to fallback to parsing this file for the config\n"))
cfgfile.Write([]byte("\n"))
cfgfile.Write([]byte("# this file is intended to be used to customize settings on what\n"))
cfgfile.Write([]byte("# git repos you have write access to. That is, where you can run 'git push'\n"))
}
cfgfile.Write(data)
return nil
}
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