siyuan/kernel/model/import.go

840 lines
23 KiB
Go

// SiYuan - Build Your Eternal Digital Garden
// Copyright (c) 2020-present, b3log.org
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
package model
import (
"bytes"
"encoding/base64"
"encoding/json"
"errors"
"fmt"
"image"
"image/jpeg"
"image/png"
"io"
"io/fs"
"math/rand"
"os"
"path"
"path/filepath"
"runtime/debug"
"sort"
"strconv"
"strings"
"time"
"github.com/88250/gulu"
"github.com/88250/lute/ast"
"github.com/88250/lute/html"
"github.com/88250/lute/html/atom"
"github.com/88250/lute/parse"
"github.com/88250/lute/render"
"github.com/siyuan-note/filelock"
"github.com/siyuan-note/logging"
"github.com/siyuan-note/siyuan/kernel/filesys"
"github.com/siyuan-note/siyuan/kernel/sql"
"github.com/siyuan-note/siyuan/kernel/treenode"
"github.com/siyuan-note/siyuan/kernel/util"
)
func ImportSY(zipPath, boxID, toPath string) (err error) {
util.PushEndlessProgress(Conf.Language(73))
defer util.ClearPushProgress(100)
baseName := filepath.Base(zipPath)
ext := filepath.Ext(baseName)
baseName = strings.TrimSuffix(baseName, ext)
unzipPath := filepath.Join(filepath.Dir(zipPath), baseName+"-"+gulu.Rand.String(7))
err = gulu.Zip.Unzip(zipPath, unzipPath)
if nil != err {
return
}
defer os.RemoveAll(unzipPath)
var syPaths []string
filepath.Walk(unzipPath, func(path string, info fs.FileInfo, err error) error {
if nil != err {
return err
}
if !info.IsDir() && strings.HasSuffix(info.Name(), ".sy") {
syPaths = append(syPaths, path)
}
return nil
})
unzipRootPaths, err := filepath.Glob(unzipPath + "/*")
if nil != err {
return
}
if 1 != len(unzipRootPaths) {
logging.LogErrorf("invalid .sy.zip")
return errors.New("invalid .sy.zip")
}
unzipRootPath := unzipRootPaths[0]
luteEngine := util.NewLute()
blockIDs := map[string]string{}
trees := map[string]*parse.Tree{}
// 重新生成块 ID
for _, syPath := range syPaths {
data, readErr := os.ReadFile(syPath)
if nil != readErr {
logging.LogErrorf("read .sy [%s] failed: %s", syPath, readErr)
err = readErr
return
}
tree, _, parseErr := parse.ParseJSON(data, luteEngine.ParseOptions)
if nil != parseErr {
logging.LogErrorf("parse .sy [%s] failed: %s", syPath, parseErr)
err = parseErr
return
}
ast.Walk(tree.Root, func(n *ast.Node, entering bool) ast.WalkStatus {
if !entering {
return ast.WalkContinue
}
if "" != n.ID {
newNodeID := ast.NewNodeID()
blockIDs[n.ID] = newNodeID
n.ID = newNodeID
n.SetIALAttr("id", newNodeID)
}
return ast.WalkContinue
})
tree.ID = tree.Root.ID
tree.Path = filepath.ToSlash(strings.TrimPrefix(syPath, unzipRootPath))
trees[tree.ID] = tree
}
// 引用和嵌入指向重新生成的块 ID
for _, tree := range trees {
ast.Walk(tree.Root, func(n *ast.Node, entering bool) ast.WalkStatus {
if !entering {
return ast.WalkContinue
}
if treenode.IsBlockRef(n) {
defID, _, _ := treenode.GetBlockRef(n)
newDefID := blockIDs[defID]
if "" != newDefID {
n.TextMarkBlockRefID = newDefID
}
} else if ast.NodeBlockQueryEmbedScript == n.Type {
for oldID, newID := range blockIDs {
// 导入 `.sy.zip` 后查询嵌入块失效 https://github.com/siyuan-note/siyuan/issues/5316
n.Tokens = bytes.ReplaceAll(n.Tokens, []byte(oldID), []byte(newID))
}
}
return ast.WalkContinue
})
}
// 写回 .sy
for _, tree := range trees {
syPath := filepath.Join(unzipRootPath, tree.Path)
if "" == tree.Root.Spec {
parse.NestedInlines2FlattedSpans(tree)
tree.Root.Spec = "1"
}
renderer := render.NewJSONRenderer(tree, luteEngine.RenderOptions)
data := renderer.Render()
buf := bytes.Buffer{}
buf.Grow(4096)
if err = json.Indent(&buf, data, "", "\t"); nil != err {
return
}
data = buf.Bytes()
if err = os.WriteFile(syPath, data, 0644); nil != err {
logging.LogErrorf("write .sy [%s] failed: %s", syPath, err)
return
}
newSyPath := filepath.Join(filepath.Dir(syPath), tree.ID+".sy")
if err = filelock.Move(syPath, newSyPath); nil != err {
logging.LogErrorf("rename .sy from [%s] to [%s] failed: %s", syPath, newSyPath, err)
return
}
}
// 合并 sort.json
fullSortIDs := map[string]int{}
sortIDs := map[string]int{}
var sortData []byte
var sortErr error
sortPath := filepath.Join(unzipRootPath, ".siyuan", "sort.json")
if gulu.File.IsExist(sortPath) {
sortData, sortErr = filelock.ReadFile(sortPath)
if nil != sortErr {
logging.LogErrorf("read import sort conf failed: %s", sortErr)
}
if sortErr = gulu.JSON.UnmarshalJSON(sortData, &sortIDs); nil != sortErr {
logging.LogErrorf("unmarshal sort conf failed: %s", sortErr)
}
boxSortPath := filepath.Join(util.DataDir, boxID, ".siyuan", "sort.json")
if gulu.File.IsExist(boxSortPath) {
sortData, sortErr = filelock.ReadFile(boxSortPath)
if nil != sortErr {
logging.LogErrorf("read box sort conf failed: %s", sortErr)
}
if sortErr = gulu.JSON.UnmarshalJSON(sortData, &fullSortIDs); nil != sortErr {
logging.LogErrorf("unmarshal box sort conf failed: %s", sortErr)
}
}
for oldID, sort := range sortIDs {
if newID := blockIDs[oldID]; "" != newID {
fullSortIDs[newID] = sort
}
}
sortData, sortErr = gulu.JSON.MarshalJSON(fullSortIDs)
if nil != sortErr {
logging.LogErrorf("marshal temp full sort conf failed: %s", sortErr)
} else {
sortErr = filelock.WriteFile(sortPath, sortData)
if nil != sortErr {
logging.LogErrorf("write temp full sort conf failed: %s", sortErr)
}
}
}
// 重命名文件路径
renamePaths := map[string]string{}
filepath.Walk(unzipRootPath, func(path string, info fs.FileInfo, err error) error {
if nil != err {
return err
}
if info.IsDir() && util.IsIDPattern(info.Name()) {
renamePaths[path] = path
}
return nil
})
for p, _ := range renamePaths {
originalPath := p
p = strings.TrimPrefix(p, unzipRootPath)
p = filepath.ToSlash(p)
parts := strings.Split(p, "/")
buf := bytes.Buffer{}
buf.WriteString("/")
for i, part := range parts {
if "" == part {
continue
}
newNodeID := blockIDs[part]
if "" != newNodeID {
buf.WriteString(newNodeID)
} else {
buf.WriteString(part)
}
if i < len(parts)-1 {
buf.WriteString("/")
}
}
newPath := buf.String()
renamePaths[originalPath] = filepath.Join(unzipRootPath, newPath)
}
var oldPaths []string
for oldPath, _ := range renamePaths {
oldPaths = append(oldPaths, oldPath)
}
sort.Slice(oldPaths, func(i, j int) bool {
return strings.Count(oldPaths[i], string(os.PathSeparator)) < strings.Count(oldPaths[j], string(os.PathSeparator))
})
for i, oldPath := range oldPaths {
newPath := renamePaths[oldPath]
if err = filelock.Move(oldPath, newPath); nil != err {
logging.LogErrorf("rename path from [%s] to [%s] failed: %s", oldPath, renamePaths[oldPath], err)
return errors.New("rename path failed")
}
delete(renamePaths, oldPath)
var toRemoves []string
newRenamedPaths := map[string]string{}
for oldP, newP := range renamePaths {
if strings.HasPrefix(oldP, oldPath) {
renamedOldP := strings.Replace(oldP, oldPath, newPath, 1)
newRenamedPaths[renamedOldP] = newP
toRemoves = append(toRemoves, oldPath)
}
}
for _, toRemove := range toRemoves {
delete(renamePaths, toRemove)
}
for oldP, newP := range newRenamedPaths {
renamePaths[oldP] = newP
}
for j := i + 1; j < len(oldPaths); j++ {
if strings.HasPrefix(oldPaths[j], oldPath) {
renamedOldP := strings.Replace(oldPaths[j], oldPath, newPath, 1)
oldPaths[j] = renamedOldP
}
}
}
var assetsDirs []string
filepath.Walk(unzipRootPath, func(path string, info fs.FileInfo, err error) error {
if strings.Contains(path, "assets") && info.IsDir() {
assetsDirs = append(assetsDirs, path)
}
return nil
})
for _, assets := range assetsDirs {
if gulu.File.IsDir(assets) {
dataAssets := filepath.Join(util.DataDir, "assets")
if err = filelock.Copy(assets, dataAssets); nil != err {
logging.LogErrorf("copy assets from [%s] to [%s] failed: %s", assets, dataAssets, err)
return
}
}
os.RemoveAll(assets)
}
var baseTargetPath string
if "/" == toPath {
baseTargetPath = "/"
} else {
block := treenode.GetBlockTreeRootByPath(boxID, toPath)
if nil == block {
logging.LogErrorf("not found block by path [%s]", toPath)
return nil
}
baseTargetPath = strings.TrimSuffix(block.Path, ".sy")
}
targetDir := filepath.Join(util.DataDir, boxID, baseTargetPath)
if err = os.MkdirAll(targetDir, 0755); nil != err {
return
}
if err = filelock.RoboCopy(unzipRootPath, targetDir); nil != err {
logging.LogErrorf("copy data dir from [%s] to [%s] failed: %s", unzipRootPath, util.DataDir, err)
err = errors.New("copy data failed")
return
}
IncSync()
FullReindex()
return
}
func ImportData(zipPath string) (err error) {
util.PushEndlessProgress(Conf.Language(73))
defer util.ClearPushProgress(100)
baseName := filepath.Base(zipPath)
ext := filepath.Ext(baseName)
baseName = strings.TrimSuffix(baseName, ext)
unzipPath := filepath.Join(filepath.Dir(zipPath), baseName)
err = gulu.Zip.Unzip(zipPath, unzipPath)
if nil != err {
return
}
defer os.RemoveAll(unzipPath)
files, err := filepath.Glob(filepath.Join(unzipPath, "*/*.sy"))
if nil != err {
logging.LogErrorf("check data.zip failed: %s", err)
return errors.New("check data.zip failed")
}
if 0 < len(files) {
return errors.New("invalid data.zip")
}
dirs, err := os.ReadDir(unzipPath)
if nil != err {
logging.LogErrorf("check data.zip failed: %s", err)
return errors.New("check data.zip failed")
}
if 1 != len(dirs) {
return errors.New("invalid data.zip")
}
tmpDataPath := filepath.Join(unzipPath, dirs[0].Name())
if err = filelock.RoboCopy(tmpDataPath, util.DataDir); nil != err {
logging.LogErrorf("copy data dir from [%s] to [%s] failed: %s", tmpDataPath, util.DataDir, err)
err = errors.New("copy data failed")
return
}
IncSync()
FullReindex()
return
}
func ImportFromLocalPath(boxID, localPath string, toPath string) (err error) {
util.PushEndlessProgress(Conf.Language(73))
WaitForWritingFiles()
var baseHPath, baseTargetPath, boxLocalPath string
if "/" == toPath {
baseHPath = "/"
baseTargetPath = "/"
} else {
block := treenode.GetBlockTreeRootByPath(boxID, toPath)
if nil == block {
logging.LogErrorf("not found block by path [%s]", toPath)
return nil
}
baseHPath = block.HPath
baseTargetPath = strings.TrimSuffix(block.Path, ".sy")
}
boxLocalPath = filepath.Join(util.DataDir, boxID)
base64TmpDir := filepath.Join(util.TempDir, "base64")
os.MkdirAll(base64TmpDir, 0755)
if gulu.File.IsDir(localPath) {
// 收集所有资源文件
assets := map[string]string{}
filepath.Walk(localPath, func(currentPath string, info os.FileInfo, walkErr error) error {
if localPath == currentPath {
return nil
}
if strings.HasPrefix(info.Name(), ".") {
if info.IsDir() {
return filepath.SkipDir
}
return nil
}
if !strings.HasSuffix(info.Name(), ".md") && !strings.HasSuffix(info.Name(), ".markdown") {
assets[currentPath] = currentPath
return nil
}
return nil
})
targetPaths := map[string]string{}
assetsDone := map[string]string{}
// md 转换 sy
i := 0
filepath.Walk(localPath, func(currentPath string, info os.FileInfo, walkErr error) error {
if strings.HasPrefix(info.Name(), ".") {
if info.IsDir() {
return filepath.SkipDir
}
return nil
}
var tree *parse.Tree
var ext string
title := info.Name()
if !info.IsDir() {
ext = path.Ext(info.Name())
title = strings.TrimSuffix(info.Name(), ext)
}
id := ast.NewNodeID()
curRelPath := filepath.ToSlash(strings.TrimPrefix(currentPath, localPath))
targetPath := path.Join(baseTargetPath, id)
if "" == curRelPath {
curRelPath = "/"
} else {
dirPath := targetPaths[path.Dir(curRelPath)]
targetPath = path.Join(dirPath, id)
}
targetPath = strings.ReplaceAll(targetPath, ".sy/", "/")
targetPath += ".sy"
targetPaths[curRelPath] = targetPath
hPath := path.Join(baseHPath, filepath.ToSlash(strings.TrimPrefix(currentPath, localPath)))
hPath = strings.TrimSuffix(hPath, ext)
if info.IsDir() {
tree = treenode.NewTree(boxID, targetPath, hPath, title)
if err = filesys.WriteTree(tree); nil != err {
return io.EOF
}
return nil
}
if !strings.HasSuffix(info.Name(), ".md") && !strings.HasSuffix(info.Name(), ".markdown") {
return nil
}
data, readErr := os.ReadFile(currentPath)
if nil != readErr {
err = readErr
return io.EOF
}
tree = parseStdMd(data)
if nil == tree {
logging.LogErrorf("parse tree [%s] failed", currentPath)
return nil
}
imgHtmlBlock2InlineImg(tree)
tree.ID = id
tree.Root.ID = id
tree.Root.SetIALAttr("id", tree.Root.ID)
tree.Root.SetIALAttr("title", title)
tree.Box = boxID
targetPath = path.Join(path.Dir(targetPath), tree.Root.ID+".sy")
tree.Path = targetPath
targetPaths[curRelPath] = targetPath
tree.HPath = hPath
tree.Root.Spec = "1"
parse.NestedInlines2FlattedSpans(tree)
docDirLocalPath := filepath.Dir(filepath.Join(boxLocalPath, targetPath))
assetDirPath := getAssetsDir(boxLocalPath, docDirLocalPath)
currentDir := filepath.Dir(currentPath)
ast.Walk(tree.Root, func(n *ast.Node, entering bool) ast.WalkStatus {
if !entering || ast.NodeLinkDest != n.Type {
return ast.WalkContinue
}
dest := n.TokensStr()
if strings.HasPrefix(dest, "data:image") && strings.Contains(dest, ";base64,") {
processBase64Img(n, dest, base64TmpDir, assetDirPath, err)
return ast.WalkContinue
}
dest = strings.ReplaceAll(dest, "%20", " ")
dest = strings.ReplaceAll(dest, "%5C", "/")
n.Tokens = []byte(dest)
if !util.IsRelativePath(dest) {
return ast.WalkContinue
}
dest = filepath.ToSlash(dest)
if "" == dest {
return ast.WalkContinue
}
absDest := filepath.Join(currentDir, dest)
fullPath, exist := assets[absDest]
if !exist {
absDest = filepath.Join(currentDir, string(html.DecodeDestination([]byte(dest))))
}
fullPath, exist = assets[absDest]
if exist {
existName := assetsDone[absDest]
var name string
if "" == existName {
name = filepath.Base(fullPath)
name = util.AssetName(name)
assetTargetPath := filepath.Join(assetDirPath, name)
if err = filelock.Copy(fullPath, assetTargetPath); nil != err {
logging.LogErrorf("copy asset from [%s] to [%s] failed: %s", fullPath, assetTargetPath, err)
return ast.WalkContinue
}
assetsDone[absDest] = name
} else {
name = existName
}
n.Tokens = []byte("assets/" + name)
}
return ast.WalkContinue
})
reassignIDUpdated(tree)
if err = filesys.WriteTree(tree); nil != err {
return io.EOF
}
i++
if 0 == i%4 {
util.PushEndlessProgress(fmt.Sprintf(Conf.Language(66), util.ShortPathForBootingDisplay(tree.Path)))
}
return nil
})
if nil != err {
return err
}
IncSync()
FullReindex()
} else { // 导入单个文件
fileName := filepath.Base(localPath)
if !strings.HasSuffix(fileName, ".md") && !strings.HasSuffix(fileName, ".markdown") {
return errors.New(Conf.Language(79))
}
title := strings.TrimSuffix(fileName, ".markdown")
title = strings.TrimSuffix(title, ".md")
targetPath := strings.TrimSuffix(toPath, ".sy")
id := ast.NewNodeID()
targetPath = path.Join(targetPath, id+".sy")
var data []byte
data, err = os.ReadFile(localPath)
if nil != err {
return err
}
tree := parseStdMd(data)
if nil == tree {
msg := fmt.Sprintf("parse tree [%s] failed", localPath)
logging.LogErrorf(msg)
return errors.New(msg)
}
imgHtmlBlock2InlineImg(tree)
tree.ID = id
tree.Root.ID = id
tree.Root.SetIALAttr("id", tree.Root.ID)
tree.Root.SetIALAttr("title", title)
tree.Box = boxID
tree.Path = targetPath
tree.HPath = path.Join(baseHPath, title)
tree.Root.Spec = "1"
parse.NestedInlines2FlattedSpans(tree)
docDirLocalPath := filepath.Dir(filepath.Join(boxLocalPath, targetPath))
assetDirPath := getAssetsDir(boxLocalPath, docDirLocalPath)
ast.Walk(tree.Root, func(n *ast.Node, entering bool) ast.WalkStatus {
if !entering || ast.NodeLinkDest != n.Type {
return ast.WalkContinue
}
dest := n.TokensStr()
if strings.HasPrefix(dest, "data:image") && strings.Contains(dest, ";base64,") {
processBase64Img(n, dest, base64TmpDir, assetDirPath, err)
return ast.WalkContinue
}
dest = strings.ReplaceAll(dest, "%20", " ")
dest = strings.ReplaceAll(dest, "%5C", "/")
n.Tokens = []byte(dest)
if !util.IsRelativePath(dest) {
return ast.WalkContinue
}
dest = filepath.ToSlash(dest)
if "" == dest {
return ast.WalkContinue
}
absolutePath := filepath.Join(filepath.Dir(localPath), dest)
exist := gulu.File.IsExist(absolutePath)
if !exist {
absolutePath = filepath.Join(filepath.Dir(localPath), string(html.DecodeDestination([]byte(dest))))
exist = gulu.File.IsExist(absolutePath)
}
if exist {
name := filepath.Base(absolutePath)
name = util.AssetName(name)
assetTargetPath := filepath.Join(assetDirPath, name)
if err = filelock.Copy(absolutePath, assetTargetPath); nil != err {
logging.LogErrorf("copy asset from [%s] to [%s] failed: %s", absolutePath, assetTargetPath, err)
return ast.WalkContinue
}
n.Tokens = []byte("assets/" + name)
}
return ast.WalkContinue
})
reassignIDUpdated(tree)
if err = indexWriteJSONQueue(tree); nil != err {
return
}
IncSync()
sql.WaitForWritingDatabase()
util.PushEndlessProgress(Conf.Language(58))
go func() {
time.Sleep(2 * time.Second)
util.ReloadUI()
}()
}
debug.FreeOSMemory()
IncSync()
return
}
func processBase64Img(n *ast.Node, dest string, base64TmpDir string, assetDirPath string, err error) {
sep := strings.Index(dest, ";base64,")
var decodeErr error
unbased, decodeErr := base64.StdEncoding.DecodeString(dest[sep+8:])
if nil != decodeErr {
logging.LogErrorf("decode base64 image failed: %s", decodeErr)
return
}
dataReader := bytes.NewReader(unbased)
var img image.Image
var ext string
typ := dest[5:sep]
switch typ {
case "image/png":
img, decodeErr = png.Decode(dataReader)
ext = ".png"
case "image/jpeg":
img, decodeErr = jpeg.Decode(dataReader)
ext = ".jpg"
default:
logging.LogWarnf("unsupported base64 image type [%s]", typ)
return
}
if nil != decodeErr {
logging.LogErrorf("decode base64 image failed: %s", decodeErr)
return
}
name := "image" + ext
alt := n.Parent.ChildByType(ast.NodeLinkText)
if nil != alt {
name = alt.TokensStr() + ext
}
name = util.FilterFileName(name)
name = util.AssetName(name)
tmp := filepath.Join(base64TmpDir, name)
tmpFile, openErr := os.OpenFile(tmp, os.O_RDWR|os.O_CREATE, 0644)
if nil != openErr {
logging.LogErrorf("open temp file [%s] failed: %s", tmp, openErr)
return
}
var encodeErr error
switch typ {
case "image/png":
encodeErr = png.Encode(tmpFile, img)
case "image/jpeg":
encodeErr = jpeg.Encode(tmpFile, img, &jpeg.Options{Quality: 100})
}
if nil != encodeErr {
logging.LogErrorf("encode base64 image failed: %s", encodeErr)
tmpFile.Close()
return
}
tmpFile.Close()
assetTargetPath := filepath.Join(assetDirPath, name)
if err = filelock.Copy(tmp, assetTargetPath); nil != err {
logging.LogErrorf("copy asset from [%s] to [%s] failed: %s", tmp, assetTargetPath, err)
return
}
n.Tokens = []byte("assets/" + name)
}
func imgHtmlBlock2InlineImg(tree *parse.Tree) {
imgHtmlBlocks := map[*ast.Node]*html.Node{}
ast.Walk(tree.Root, func(n *ast.Node, entering bool) ast.WalkStatus {
if !entering {
return ast.WalkContinue
}
if ast.NodeHTMLBlock == n.Type {
htmlNodes, pErr := html.ParseFragment(bytes.NewReader(n.Tokens), &html.Node{Type: html.ElementNode})
if nil != pErr {
logging.LogErrorf("parse html block [%s] failed: %s", n.Tokens, pErr)
return ast.WalkContinue
}
if 1 > len(htmlNodes) {
return ast.WalkContinue
}
for _, htmlNode := range htmlNodes {
if atom.Img == htmlNode.DataAtom {
imgHtmlBlocks[n] = htmlNode
break
}
}
}
return ast.WalkContinue
})
for n, htmlImg := range imgHtmlBlocks {
src := domAttrValue(htmlImg, "src")
alt := domAttrValue(htmlImg, "alt")
title := domAttrValue(htmlImg, "title")
p := &ast.Node{Type: ast.NodeParagraph, ID: n.ID}
img := &ast.Node{Type: ast.NodeImage}
p.AppendChild(img)
img.AppendChild(&ast.Node{Type: ast.NodeBang})
img.AppendChild(&ast.Node{Type: ast.NodeOpenBracket})
img.AppendChild(&ast.Node{Type: ast.NodeLinkText, Tokens: []byte(alt)})
img.AppendChild(&ast.Node{Type: ast.NodeCloseBracket})
img.AppendChild(&ast.Node{Type: ast.NodeOpenParen})
img.AppendChild(&ast.Node{Type: ast.NodeLinkDest, Tokens: []byte(src)})
if "" != title {
img.AppendChild(&ast.Node{Type: ast.NodeLinkSpace})
img.AppendChild(&ast.Node{Type: ast.NodeLinkTitle})
}
img.AppendChild(&ast.Node{Type: ast.NodeCloseParen})
n.InsertBefore(p)
n.Unlink()
}
return
}
func reassignIDUpdated(tree *parse.Tree) {
var blockCount int
ast.Walk(tree.Root, func(n *ast.Node, entering bool) ast.WalkStatus {
if !entering || "" == n.ID {
return ast.WalkContinue
}
blockCount++
return ast.WalkContinue
})
ids := make([]string, blockCount)
min, _ := strconv.ParseInt(time.Now().Add(-1*time.Duration(blockCount)*time.Second).Format("20060102150405"), 10, 64)
for i := 0; i < blockCount; i++ {
ids[i] = newID(fmt.Sprintf("%d", min))
min++
}
var i int
ast.Walk(tree.Root, func(n *ast.Node, entering bool) ast.WalkStatus {
if !entering || "" == n.ID {
return ast.WalkContinue
}
n.ID = ids[i]
n.SetIALAttr("id", n.ID)
n.SetIALAttr("updated", util.TimeFromID(n.ID))
i++
return ast.WalkContinue
})
tree.ID = tree.Root.ID
tree.Path = path.Join(path.Dir(tree.Path), tree.ID+".sy")
tree.Root.SetIALAttr("id", tree.Root.ID)
}
func newID(t string) string {
return t + "-" + randStr(7)
}
func randStr(length int) string {
letter := []rune("abcdefghijklmnopqrstuvwxyz0123456789")
b := make([]rune, length)
for i := range b {
b[i] = letter[rand.Intn(len(letter))]
}
return string(b)
}
func domAttrValue(n *html.Node, attrName string) string {
if nil == n {
return ""
}
for _, attr := range n.Attr {
if attr.Key == attrName {
return attr.Val
}
}
return ""
}