mirror of
https://github.com/osmarks/mycorrhiza.git
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109 lines
3.3 KiB
Go
109 lines
3.3 KiB
Go
package shroom
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import (
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"errors"
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"fmt"
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"regexp"
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"github.com/bouncepaw/mycorrhiza/history"
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"github.com/bouncepaw/mycorrhiza/hyphae"
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"github.com/bouncepaw/mycorrhiza/user"
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"github.com/bouncepaw/mycorrhiza/util"
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)
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func canRenameThisToThat(oh *hyphae.Hypha, nh *hyphae.Hypha, u *user.User) (errtitle string, err error) {
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if nh.Exists {
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rejectRenameLog(oh, u, fmt.Sprintf("name ‘%s’ taken already", nh.Name))
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return "Name taken", fmt.Errorf("Hypha named <a href='/hypha/%[1]s'>%[1]s</a> already exists, cannot rename", nh.Name)
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}
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if nh.Name == "" {
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rejectRenameLog(oh, u, "no new name given")
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return "No name given", errors.New("No new name is given")
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}
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if !hyphae.HyphaPattern.MatchString(nh.Name) {
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rejectRenameLog(oh, u, fmt.Sprintf("new name ‘%s’ invalid", nh.Name))
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return "Invalid name", errors.New("Invalid new name. Names cannot contain characters <code>^?!:#@><*|\"\\'&%</code>")
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}
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return "", nil
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}
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// RenameHypha renames hypha from old name `hyphaName` to `newName` and makes a history record about that. If `recursive` is `true`, its subhyphae will be renamed the same way.
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func RenameHypha(h *hyphae.Hypha, newHypha *hyphae.Hypha, recursive bool, u *user.User) (hop *history.Op, errtitle string) {
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newHypha.Lock()
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defer newHypha.Unlock()
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hop = history.Operation(history.TypeRenameHypha)
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if errtitle, err := CanRename(u, h); errtitle != "" {
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hop.WithErrAbort(err)
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return hop, errtitle
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}
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if errtitle, err := canRenameThisToThat(h, newHypha, u); errtitle != "" {
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hop.WithErrAbort(err)
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return hop, errtitle
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}
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var (
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re = regexp.MustCompile(`(?i)` + h.Name)
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replaceName = func(str string) string {
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return re.ReplaceAllString(util.CanonicalName(str), newHypha.Name)
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}
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hyphaeToRename = findHyphaeToRename(h, recursive)
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renameMap, err = renamingPairs(hyphaeToRename, replaceName)
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renameMsg = "Rename ‘%s’ to ‘%s’"
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)
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if err != nil {
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hop.Errs = append(hop.Errs, err)
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return hop, hop.FirstErrorText()
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}
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if recursive && len(hyphaeToRename) > 0 {
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renameMsg += " recursively"
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}
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hop.WithFilesRenamed(renameMap).
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WithMsg(fmt.Sprintf(renameMsg, h.Name, newHypha.Name)).
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WithUser(u).
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Apply()
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if len(hop.Errs) == 0 {
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for _, h := range hyphaeToRename {
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oldName := h.Name
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h.RenameTo(replaceName(h.Name))
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h.Lock()
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h.TextPath = replaceName(h.TextPath)
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h.BinaryPath = replaceName(h.BinaryPath)
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h.Unlock()
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hyphae.BacklinksOnRename(h, oldName)
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}
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}
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return hop, ""
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}
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func findHyphaeToRename(superhypha *hyphae.Hypha, recursive bool) []*hyphae.Hypha {
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hyphae := []*hyphae.Hypha{superhypha}
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if recursive {
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hyphae = append(hyphae, superhypha.Subhyphae()...)
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}
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return hyphae
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}
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func renamingPairs(hyphaeToRename []*hyphae.Hypha, replaceName func(string) string) (map[string]string, error) {
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renameMap := make(map[string]string)
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newNames := make([]string, len(hyphaeToRename))
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for _, h := range hyphaeToRename {
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h.Lock()
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newNames = append(newNames, replaceName(h.Name))
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if h.TextPath != "" {
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renameMap[h.TextPath] = replaceName(h.TextPath)
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}
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if h.BinaryPath != "" {
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renameMap[h.BinaryPath] = replaceName(h.BinaryPath)
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}
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h.Unlock()
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}
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if firstFailure, ok := hyphae.AreFreeNames(newNames...); !ok {
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return nil, errors.New("Hypha " + firstFailure + " already exists")
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}
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return renameMap, nil
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}
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