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load.go
36 lines (33 loc) · 966 Bytes
/
load.go
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package statefile
import (
"encoding/json"
"fmt"
"os"
"github.com/git-town/git-town/v14/src/git/gitdomain"
"github.com/git-town/git-town/v14/src/messages"
"github.com/git-town/git-town/v14/src/vm/runstate"
)
// Load loads the run state for the given Git repo from disk. Can return nil if there is no saved runstate.
func Load(repoDir gitdomain.RepoRootDir) (*runstate.RunState, error) {
filename, err := FilePath(repoDir)
if err != nil {
return nil, err
}
_, err = os.Stat(filename)
if err != nil {
if os.IsNotExist(err) {
return nil, nil //nolint:nilnil
}
return nil, fmt.Errorf(messages.FileStatProblem, filename, err)
}
content, err := os.ReadFile(filename)
if err != nil {
return nil, fmt.Errorf(messages.FileReadProblem, filename, err)
}
var runState runstate.RunState
err = json.Unmarshal(content, &runState)
if err != nil {
return nil, fmt.Errorf(messages.FileContentInvalidJSON, filename, err)
}
return &runState, nil
}