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lib/transform: add transform library and --name-transform flag

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lib/transform adds the transform library, supporting advanced path name
transformations for converting and renaming files and directories by applying
prefixes, suffixes, and other alterations.

It also adds the --name-transform flag for use with sync, copy, and move.

Multiple transformations can be used in sequence, applied in the order they are
specified on the command line.

By default --name-transform will only apply to file names. The means only the leaf
file name will be transformed. However some of the transforms would be better
applied to the whole path or just directories. To choose which which part of the
file path is affected some tags can be added to the --name-transform:

file	Only transform the leaf name of files (DEFAULT)
dir	Only transform name of directories - these may appear anywhere in the path
all	Transform the entire path for files and directories

Example syntax:
--name-transform file,prefix=ABC
--name-transform dir,prefix=DEF
This commit is contained in:
nielash
2025-05-04 03:10:48 -04:00
committed by Nick Craig-Wood
parent 41a407dcc9
commit 013c563293
18 changed files with 1529 additions and 224 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
fs/operations/rc.go
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@@ -62,7 +62,7 @@ func rcList(ctx context.Context, in rc.Params) (out rc.Params, err error) {
if rc.NotErrParamNotFound(err) {
return nil, err
}
var list = []*ListJSONItem{}
list := []*ListJSONItem{}
err = ListJSON(ctx, f, remote, &opt, func(item *ListJSONItem) error {
list = append(list, item)
return nil
@@ -193,7 +193,7 @@ func rcMoveOrCopyFile(ctx context.Context, in rc.Params, cp bool) (out rc.Params
if err != nil {
return nil, err
}
return nil, moveOrCopyFile(ctx, dstFs, srcFs, dstRemote, srcRemote, cp)
return nil, moveOrCopyFile(ctx, dstFs, srcFs, dstRemote, srcRemote, cp, false)
}
func init() {
@@ -289,7 +289,6 @@ func rcSingleCommand(ctx context.Context, in rc.Params, name string, noRemote bo
var request *http.Request
request, err := in.GetHTTPRequest()
if err != nil {
return nil, err
}
@@ -629,12 +628,12 @@ func rcBackend(ctx context.Context, in rc.Params) (out rc.Params, err error) {
if err != nil {
return nil, err
}
var opt = map[string]string{}
opt := map[string]string{}
err = in.GetStructMissingOK("opt", &opt)
if err != nil {
return nil, err
}
var arg = []string{}
arg := []string{}
err = in.GetStructMissingOK("arg", &arg)
if err != nil {
return nil, err
@@ -642,7 +641,6 @@ func rcBackend(ctx context.Context, in rc.Params) (out rc.Params, err error) {
result, err := doCommand(ctx, command, arg, opt)
if err != nil {
return nil, fmt.Errorf("command %q failed: %w", command, err)
}
out = make(rc.Params)
out["result"] = result
@@ -685,7 +683,6 @@ func rcDu(ctx context.Context, in rc.Params) (out rc.Params, err error) {
dir, err := in.GetString("dir")
if rc.IsErrParamNotFound(err) {
dir = config.GetCacheDir()
} else if err != nil {
return nil, err
}