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publish.go
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publish.go
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package gxutil
import (
"fmt"
"os"
"path"
"path/filepath"
"strings"
gi "github.com/sabhiram/go-git-ignore"
)
func (pm *PM) PublishPackage(dir string, pkg *PackageBase) (string, error) {
gitig, err := gi.CompileIgnoreFile(path.Join(dir, ".gitignore"))
if err != nil && !os.IsNotExist(err) {
return "", err
}
gxig, err := gi.CompileIgnoreFile(path.Join(dir, ".gxignore"))
if err != nil && !os.IsNotExist(err) {
return "", err
}
var files []string
filepath.Walk(dir, func(p string, info os.FileInfo, err error) error {
// ignore directories
if info.IsDir() {
return nil
}
// get relative path
rel := p[len(dir):]
if dir[len(dir)-1] != '/' {
rel = rel[1:]
}
// respect gitignore
if gitig != nil && gitig.MatchesPath(rel) {
return nil
}
// respect gxignore
if gxig != nil && gxig.MatchesPath(rel) {
return nil
}
// dont publish the git repo
if strings.HasPrefix(rel, ".git") {
return nil
}
// dont publish vendored code
if strings.HasPrefix(rel, "vendor") {
return nil
}
// dont publish gx repo files
if strings.HasPrefix(rel, ".gx/") {
return nil
}
files = append(files, rel)
return nil
})
// we cant guarantee that the 'empty dir' object exists already
blank, err := pm.Shell().NewObject("unixfs-dir")
if err != nil {
return "", err
}
pm.blankDir = blank
pkgdir, err := pm.addFiles(dir, files)
if err != nil {
return "", err
}
return pm.Shell().Patch(pm.blankDir, "add-link", pkg.Name, pkgdir)
}
type filetree struct {
children map[string]*filetree
}
func newFiletree() *filetree {
return &filetree{make(map[string]*filetree)}
}
func newFiletreeFromFiles(files []string) (*filetree, error) {
root := &filetree{make(map[string]*filetree)}
for _, f := range files {
f = strings.TrimRight(f, "/")
parts := strings.Split(f, "/")
if err := root.insert(parts); err != nil {
return nil, err
}
}
return root, nil
}
func (ft *filetree) insert(path []string) error {
if len(path) > 1 {
child, ok := ft.children[path[0]]
if !ok {
child = newFiletree()
ft.children[path[0]] = child
}
return child.insert(path[1:])
}
if len(path) == 1 {
_, ok := ft.children[path[0]]
if ok {
return fmt.Errorf("path already exists: %s", path[0])
}
ft.children[path[0]] = newFiletree()
return nil
}
panic("branch never reached")
}
func (pm *PM) addFiles(root string, files []string) (string, error) {
tree, err := newFiletreeFromFiles(files)
if err != nil {
return "", err
}
return pm.addTree(tree, root)
}
func (pm *PM) addFile(p string) (string, error) {
fi, err := os.Open(p)
if err != nil {
fmt.Printf("open failed: %s\n", err)
return "", err
}
defer fi.Close()
return pm.Shell().Add(fi)
}
func (pm *PM) addPathElem(v *filetree, f, cwd string) (string, error) {
if v == nil || len(v.children) == 0 {
// file or symlink here
p := path.Join(cwd, f)
stat, err := os.Lstat(p)
if err != nil {
fmt.Printf("file stat failed: %s\n", err)
return "", err
}
if stat.Mode()&os.ModeSymlink != 0 {
target, err := os.Readlink(p)
if err != nil {
return "", err
}
return pm.Shell().AddLink(target)
}
return pm.addFile(p)
}
return pm.addTree(v, path.Join(cwd, f))
}
func (pm *PM) addTree(nd *filetree, cwd string) (string, error) {
cur := pm.blankDir
for f, v := range nd.children {
hash, err := pm.addPathElem(v, f, cwd)
if err != nil {
return "", err
}
patched, err := pm.Shell().Patch(cur, "add-link", f, hash)
if err != nil {
return "", err
}
cur = patched
}
return cur, nil
}