recursive-copy
Simple, flexible file copy utility
Features
- Recursively copy whole directory hierarchies
- Choose which files are copied by passing a filter function, regular expression or glob
- Rename files dynamically, including changing the output path
- Transform file contents using streams
- Choose whether to overwrite existing files
- Choose whether to copy system files
- Filters out junk files by default
- Uses graceful-fs and mkdirp to avoid filesystem errors
- Emits start, finish and error events for each file that is processed
- Optional promise-based interface
Examples
Node-style callback interface
var copy = require('recursive-copy');
copy('src', 'dest', function(error, results) {
if (error) {
console.error('Copy failed: ' + error);
} else {
console.info('Copied ' + results.length + ' files');
}
});Promise interface
var copy = require('recursive-copy');
copy('src', 'dest')
.then(function(results) {
console.info('Copied ' + results.length + ' files');
})
.catch(function(error) {
console.error('Copy failed: ' + error);
});Advanced options
var copy = require('recursive-copy');
var path = require('path');
var through = require('through2');
var options = {
overwrite: true,
expand: true,
dot: true,
junk: true,
filter: [
'**/*',
'!.htpasswd'
],
rename: function(filePath) {
return filePath + '.orig';
},
transform: function(src, dest, stats) {
if (path.extname(src) !== '.txt') { return null; }
return through(function(chunk, enc, done) {
var output = chunk.toString().toUpperCase();
done(null, output);
});
}
};
copy('src', 'dest', options)
.on(copy.events.COPY_FILE_START, function(copyOperation) {
console.info('Copying file ' + copyOperation.src + '...');
})
.on(copy.events.COPY_FILE_COMPLETE, function(copyOperation) {
console.info('Copied to ' + copyOperation.dest);
})
.on(copy.events.ERROR, function(error, copyOperation) {
console.error('Unable to copy ' + copyOperation.dest);
})
.then(function(results) {
console.info(results.length + ' file(s) copied');
})
.catch(function(error) {
return console.error('Copy failed: ' + error);
});Usage
copy(src, dest, [options], [callback])
Recursively copy files and folders from src to dest
Arguments:
| Name | Type | Required | Default | Description |
|---|---|---|---|---|
src |
string |
Yes | N/A | Source file/folder path |
dest |
string |
Yes | N/A | Destination file/folder path |
options.overwrite |
boolean |
No | false |
Whether to overwrite destination files |
options.expand |
boolean |
No | false |
Whether to expand symbolic links |
options.dot |
boolean |
No | false |
Whether to copy files beginning with a . |
options.junk |
boolean |
No | false |
Whether to copy OS junk files (e.g. .DS_Store, Thumbs.db) |
options.filter |
function, RegExp, string, array |
No | null |
Filter function / regular expression / glob that determines which files to copy (uses maximatch) |
options.rename |
function |
No | null |
Function that maps source paths to destination paths |
options.transform |
function |
No | null |
Function that returns a transform stream used to modify file contents |
callback |
function |
No | null |
Callback, invoked on success/failure |
Returns:
Promise<Array> Promise, fulfilled with array of copy results:
[
{
"src": "/path/to/src",
"dest": "/path/to/dest",
"stats": <Stats>
},
{
"src": "/path/to/src/file.txt",
"dest": "/path/to/dest/file.txt",
"stats": <Stats>
},
{
"src": "/path/to/src/subfolder",
"dest": "/path/to/dest/subfolder",
"stats": <Stats>
},
{
"src": "/path/to/src/subfolder/nested.txt",
"dest": "/path/to/dest/subfolder/nested.txt",
"stats": <Stats>
}
]Events
The value returned by the copy function implements the EventEmitter interface, and emits the following events:
| Event | Handler signature |
|---|---|
copy.events.ERROR |
function(error, ErrorInfo) |
copy.events.COMPLETE |
function(Array<CopyOperation>) |
copy.events.CREATE_DIRECTORY_START |
function(CopyOperation) |
copy.events.CREATE_DIRECTORY_ERROR |
function(error, CopyOperation) |
copy.events.CREATE_DIRECTORY_COMPLETE |
function(CopyOperation) |
copy.events.CREATE_SYMLINK_START |
function(CopyOperation) |
copy.events.CREATE_SYMLINK_ERROR |
function(error, CopyOperation) |
copy.events.CREATE_SYMLINK_COMPLETE |
function(CopyOperation) |
copy.events.COPY_FILE_START |
function(CopyOperation) |
copy.events.COPY_FILE_ERROR |
function(error, CopyOperation) |
copy.events.COPY_FILE_COMPLETE |
function(CopyOperation) |
...where the types referred to in the handler signature are as follows:
ErrorInfo
| Property | Type | Description |
|---|---|---|
src |
string |
Source path of the file/folder/symlink that failed to copy |
dest |
string |
Destination path of the file/folder/symlink that failed to copy |
CopyOperation
| Property | Type | Description |
|---|---|---|
src |
string |
Source path of the relevant file/folder/symlink |
dest |
string |
Destination path of the relevant file/folder/symlink |
stats |
fs.Stats |
Stats for the relevant file/folder/symlink |
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