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package just
import (
"errors"
"io/fs"
"os/exec"
"pik/identity"
"pik/model"
"pik/runner"
"strings"
)
type just struct {
path string
}
var Indexer = &just{}
func (j *just) Index(path string, f fs.FS, runners []model.Runner) ([]model.Target, error) {
entries, err := fs.ReadDir(f, ".")
if err != nil {
return nil, err
}
hasJustfile := false
for _, e := range entries {
if !e.IsDir() && strings.ToLower(e.Name()) == "justfile" {
hasJustfile = true
break
}
}
if !hasJustfile {
return nil, nil
}
err = j.findJust()
if err != nil {
return nil, err
}
cmd := exec.Command(j.path, "--list")
cmd.Dir = path
out, err := cmd.CombinedOutput()
if err != nil {
return nil, err
}
return ParseOutput(string(out)), nil
}
func ParseOutput(input string) []model.Target {
categories := make(map[string][]string)
currentCategory := ""
for _, line := range strings.Split(input, "\n") {
// strip comment
line = strings.SplitN(line, "#", 2)[0]
line = strings.TrimSpace(line)
if strings.HasPrefix(line, "[") && strings.HasSuffix(line, "]") {
currentCategory = line[1 : len(line)-1]
continue
}
tgt := strings.SplitN(line, " ", 2)[0]
if tgt == "" {
continue
}
categories[currentCategory] = append(categories[currentCategory], tgt)
}
var result []model.Target
for c, targets := range categories {
for _, t := range targets {
result = append(result, &Target{
BaseTarget: runner.BaseTarget{
Identity: identity.New(t),
},
Category: c,
})
}
}
return result
}
var NoJustError = errors.New("no just in $PATH but source contains justfile")
func (j *just) findJust() error {
loc, err := exec.LookPath("just")
if errors.Is(err, exec.ErrNotFound) {
return NoJustError
} else if err != nil {
return err
}
j.path = loc
return nil
}
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