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Prototype for 'purge' command (#16) #94

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Prototype for 'purge' command (#16) #94

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1 change: 1 addition & 0 deletions main.go
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Original file line number Diff line number Diff line change
Expand Up @@ -31,6 +31,7 @@ var commands = []*Command{
cmdUpdate,
cmdList,
cmdDelete,
cmdPurge,
}

func main() {
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62 changes: 62 additions & 0 deletions purge.go
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Original file line number Diff line number Diff line change
@@ -0,0 +1,62 @@
package main

import (
"path/filepath"
errors "github.com/pkg/errors"
"strings"

fileutils "github.com/FiloSottile/gvt/fileutils"
gbvendor "github.com/FiloSottile/gvt/gbvendor"
"path"
)

var cmdPurge = &Command{
Name: "purge",
UsageLine: "purge",
Short: "purges all unreferenced dependencies",
Long: `gb vendor purge will remove all unreferenced dependencies

`,
Run: func(args []string) error {
m, err := gbvendor.ReadManifest(manifestFile)
if err != nil {
return errors.Wrap(err, "could not load manifest")
}
root := path.Dir(vendorDir)
imports, err := gbvendor.ParseImports(root, root, "", true, true)
if err != nil {
return errors.Wrap(err, "import could not be parsed")
}

var hasImportWithPrefix = func(d string) bool {
for i := range imports {
if strings.HasPrefix(i, d) {
return true
}
}
return false
}

dependencies := make([]gbvendor.Dependency, len(m.Dependencies))
copy(dependencies, m.Dependencies)

for _, d := range dependencies {
if !hasImportWithPrefix(d.Importpath) {
dep, err := m.GetDependencyForImportpath(d.Importpath)
if err != nil {
return errors.Wrap(err, "could not get get dependency")
}

if err := m.RemoveDependency(dep); err != nil {
return errors.Wrap(err, "dependency could not be removed")
}
if err := fileutils.RemoveAll(filepath.Join(root, "vendor", "src", filepath.FromSlash(d.Importpath))); err != nil {
// TODO(dfc) need to apply vendor.cleanpath here to remove intermediate directories.
return errors.Wrap(err, "dependency could not be deleted")
}
}
}

return gbvendor.WriteManifest(manifestFile, m)
},
}