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parse.go
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/
parse.go
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package util
import (
"errors"
"fmt"
"io"
"os"
"strings"
"golang.org/x/mod/modfile"
)
const GoModFile = "go.mod"
var (
ErrGoModNotFound = errors.New("can't locate go.mod")
)
type GoModMeta struct {
author string
project string
mf *modfile.File
}
func ParseGoMod(path string) (*GoModMeta, error) {
fd, err := os.Open(path)
if err != nil {
if os.IsNotExist(err) {
return nil, ErrGoModNotFound
}
return nil, fmt.Errorf("open go.mod: %w", err)
}
content, err := io.ReadAll(fd)
if err != nil {
return nil, fmt.Errorf("read go.mod: %w", err)
}
mp, err := modfile.Parse(GoModFile, content, nil)
if err != nil {
return nil, fmt.Errorf("parse mod file: %w", err)
}
url := mp.Module.Mod.Path
parts := strings.Split(url, "/")
author := parts[len(parts)-2]
project := parts[len(parts)-1]
return &GoModMeta{
mf: mp,
author: author,
project: project,
}, nil
}
func (gm *GoModMeta) GetAuthor() string {
return gm.author
}
func (gm *GoModMeta) GetProject() string {
return gm.project
}
func (gm *GoModMeta) Contains(module string) bool {
for _, r := range gm.mf.Require {
if r.Mod.Path == module {
return true
}
}
return false
}