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95 lines
2.5 KiB
Go
95 lines
2.5 KiB
Go
package hyphae
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import (
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"log"
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"os"
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"path/filepath"
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"github.com/bouncepaw/mycorrhiza/mimetype"
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)
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// Index finds all hypha files in the full `path` and saves them to the hypha storage.
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func Index(path string) {
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byNames = make(map[string]ExistingHypha)
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ch := make(chan ExistingHypha, 5)
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go func(ch chan ExistingHypha) {
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indexHelper(path, 0, ch)
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close(ch)
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}(ch)
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for foundHypha := range ch {
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switch storedHypha := ByName(foundHypha.CanonicalName()).(type) {
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case *EmptyHypha:
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Insert(foundHypha)
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case *TextualHypha:
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switch foundHypha := foundHypha.(type) {
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case *TextualHypha: // conflict! overwrite
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storedHypha.mycoFilePath = foundHypha.mycoFilePath
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log.Printf(
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"File collision for hypha ‘%s’, using ‘%s’ rather than ‘%s’\n",
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foundHypha.CanonicalName(),
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foundHypha.TextFilePath(),
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storedHypha.TextFilePath(),
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)
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case *MediaHypha: // no conflict
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Insert(ExtendTextualToMedia(storedHypha, foundHypha.mediaFilePath))
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}
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case *MediaHypha:
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switch foundHypha := foundHypha.(type) {
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case *TextualHypha: // no conflict
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storedHypha.mycoFilePath = foundHypha.mycoFilePath
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case *MediaHypha: // conflict! overwrite
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storedHypha.mediaFilePath = foundHypha.mediaFilePath
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log.Printf(
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"File collision for hypha ‘%s’, using ‘%s’ rather than ‘%s’\n",
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foundHypha.CanonicalName(),
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foundHypha.MediaFilePath(),
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storedHypha.MediaFilePath(),
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)
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}
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}
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}
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log.Println("Indexed", Count(), "hyphae")
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}
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// indexHelper finds all hypha files in the full `path` and sends them to the
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// channel. Handling of duplicate entries and media and counting them is
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// up to the caller.
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func indexHelper(path string, nestLevel uint, ch chan ExistingHypha) {
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nodes, err := os.ReadDir(path)
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if err != nil {
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log.Fatal(err)
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}
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for _, node := range nodes {
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// If this hypha looks like it can be a hypha path, go deeper. Do not
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// touch the .git folders for it has an administrative importance!
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if node.IsDir() && IsValidName(node.Name()) && node.Name() != ".git" {
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indexHelper(filepath.Join(path, node.Name()), nestLevel+1, ch)
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continue
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}
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var (
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hyphaPartPath = filepath.Join(path, node.Name())
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hyphaName, isText, skip = mimetype.DataFromFilename(hyphaPartPath)
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)
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if !skip {
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if isText {
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ch <- &TextualHypha{
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canonicalName: hyphaName,
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mycoFilePath: hyphaPartPath,
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}
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} else {
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ch <- &MediaHypha{
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canonicalName: hyphaName,
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mycoFilePath: "",
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mediaFilePath: hyphaPartPath,
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}
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}
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}
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}
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}
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