162 lines
4.0 KiB
Go
162 lines
4.0 KiB
Go
package main
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import (
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"io/ioutil"
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"path"
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"regexp"
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"github.com/buger/jsonparser"
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)
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const (
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RE_TAGS = `\B#\w+`
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)
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type parserStat struct {
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lastNodeCount int
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lastUrlCount int
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currentNodeCount int
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currentUrlCount int
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}
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var jsonNodeTypes = struct {
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Folder, Url string
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}{"folder", "url"}
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var jsonNodePaths = struct {
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Type, Children, Url string
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}{"type", "children", "url"}
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type parseFunc func([]byte, []byte, jsonparser.ValueType, int) error
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func _s(value interface{}) string {
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return string(value.([]byte))
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}
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func findTagsInTitle(title []byte) {
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var regex = regexp.MustCompile(RE_TAGS)
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tags := regex.FindAll(title, -1)
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debugPrint("%s ---> found following tags: %s", title, tags)
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}
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func googleParseBookmarks(bw *bookmarkWatcher) {
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// Create buffer db
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//bufferDB := DB{"buffer", DB_BUFFER_PATH, nil, false}
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bufferDB := DB{}.New("buffer", DB_BUFFER_PATH)
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defer bufferDB.Close()
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bufferDB.Init()
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// Load bookmark file
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bookmarkPath := path.Join(bw.baseDir, bw.bkFile)
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f, err := ioutil.ReadFile(bookmarkPath)
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logPanic(err)
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var parseChildren func([]byte, jsonparser.ValueType, int, error)
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var gJsonParseRecursive func([]byte, []byte, jsonparser.ValueType, int) error
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parseChildren = func(childVal []byte, dataType jsonparser.ValueType, offset int, err error) {
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if err != nil {
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log.Panic(err)
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}
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gJsonParseRecursive(nil, childVal, dataType, offset)
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}
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gJsonParseRecursive = func(key []byte, node []byte, dataType jsonparser.ValueType, offset int) error {
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// Core of google chrome bookmark parsing
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// Any loading to local db is done here
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bw.stats.currentNodeCount++
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var nodeType, children []byte
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var childrenType jsonparser.ValueType
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bookmark := &Bookmark{}
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// Paths to lookup in node payload
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paths := [][]string{
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[]string{"type"},
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[]string{"name"}, // Title of page
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[]string{"url"},
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[]string{"children"},
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}
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jsonparser.EachKey(node, func(idx int, value []byte, vt jsonparser.ValueType, err error) {
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switch idx {
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case 0:
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nodeType = value
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case 1: // name or title
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bookmark.metadata = _s(value)
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case 2:
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bookmark.url = _s(value)
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case 3:
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children, childrenType = value, vt
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}
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}, paths...)
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// If node type is string ignore (needed for sync_transaction_version)
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if dataType == jsonparser.String {
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return nil
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}
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// if node is url(leaf), handle the url
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if _s(nodeType) == jsonNodeTypes.Url {
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// Add bookmark to db here
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//debugPrint("%s", url)
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//debugPrint("%s", node)
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// Find tags in title
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//findTagsInTitle(name)
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bw.stats.currentUrlCount++
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bookmark.add(bufferDB)
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}
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// if node is a folder with children
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if childrenType == jsonparser.Array && len(children) > 2 { // if len(children) > len("[]")
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jsonparser.ArrayEach(node, parseChildren, jsonNodePaths.Children)
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}
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return nil
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}
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//debugPrint("parsing bookmarks")
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// Begin parsing
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rootsData, _, _, _ := jsonparser.Get(f, "roots")
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debugPrint("loading bookmarks to bufferdb")
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// Load bookmarks to currentJobDB
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jsonparser.ObjectEach(rootsData, gJsonParseRecursive)
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// Finished parsing
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log.Infof("parsed %d bookmarks", bw.stats.currentUrlCount)
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// Reset parser counter
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bw.stats.lastUrlCount = bw.stats.currentUrlCount
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bw.stats.lastNodeCount = bw.stats.currentNodeCount
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bw.stats.currentNodeCount = 0
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bw.stats.currentUrlCount = 0
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// Compare currentDb with memCacheDb for new bookmarks
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// If cacheDB is empty just copy bufferDB to cacheDB
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// until local db is already populated and preloaded
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//debugPrint("%d", bufferDB.Count())
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if empty, err := cacheDB.isEmpty(); empty {
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logPanic(err)
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debugPrint("cache empty: loading bufferdb to cachedb")
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//start := time.Now()
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bufferDB.SyncTo(cacheDB)
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//debugPrint("<%s> is now (%d)", cacheDB.name, cacheDB.Count())
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//elapsed := time.Since(start)
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//debugPrint("copy in %s", elapsed)
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debugPrint("syncing <%s> to disk", cacheDB.name)
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cacheDB.SyncToDisk(getDBFullPath())
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}
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// TODO: Check if new/modified bookmarks in buffer compared to cache
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debugPrint("TODO: check if new/modified bookmarks in %s compared to %s", bufferDB.name, cacheDB.name)
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//_ = cacheDB.Print()
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}
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