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package gnumake
import (
"errors"
"io/fs"
"os/exec"
"pik/identity"
"pik/model"
"pik/runner"
"regexp"
"slices"
"strings"
)
type make struct {
path string
}
var Indexer = &make{}
var Makefiles = []string{
"Makefile",
"makefile",
}
func (m *make) Index(path string, f fs.FS, _ []model.Runner) ([]model.Target, error) {
entries, err := fs.ReadDir(f, ".")
if err != nil {
return nil, err
}
makefile := ""
for _, e := range entries {
if !e.IsDir() && slices.Contains(Makefiles, strings.ToLower(e.Name())) {
content, err := fs.ReadFile(f, e.Name())
if err != nil {
return nil, err
}
makefile = string(content)
break
}
}
if makefile == "" {
return nil, nil
}
err = m.findMake()
if err != nil {
return nil, err
}
return ParseOutput(makefile), nil
}
var makeRegex = regexp.MustCompile("^([a-zA-Z-]*):((.*?)# (.*))?")
func ParseOutput(input string) []model.Target {
var targets []string
match := makeRegex.FindAllString(input, len(input))
for _, m := range match {
targets = append(targets, m)
}
var result []model.Target
for _, t := range targets {
split := strings.SplitN(t, "#", 2)
name := split[0]
name = strings.TrimSpace(name)
name = strings.TrimSuffix(name, ":")
tgt := &MakeTarget{
BaseTarget: runner.BaseTarget{
Identity: identity.New(name),
MyTags: nil,
},
Name: name,
}
if len(split) > 1 {
tgt.Description = strings.TrimSpace(split[1])
}
result = append(result, tgt)
}
return result
}
var NoJustError = errors.New("no make in $PATH but source contains makefile")
func (m *make) findMake() error {
loc, err := exec.LookPath("make")
if errors.Is(err, exec.ErrNotFound) {
return NoJustError
} else if err != nil {
return err
}
m.path = loc
return nil
}
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