Filter

[CSester]

Hi, I tried to copy all json files in a folder without success.

copyJson = (source, dest, callback) ->
  jsonFilter = (name) ->
    return name[-5..] is '.json'

  options = {filter: jsonFilter}
  ncp source, dest, options, (error)->
    if error
      console.log "Error while copying *.json from #{source} to #{dest}"
    callback()

options.filter - a RegExp instance, against which each file name is tested to determine whether to copy it or not, or a function taking single parameter: copied file name, returning true or false, determining whether to copy file or not.

function startCopy(source) {
    started++;
    if (filter) {
      if (filter instanceof RegExp) {
        if (!filter.test(source)) {
          return cb(true);
        }
      }
      else if (typeof filter === 'function') {
        if (!filter(source)) {
          return cb(true);
        }
      }
    }
    return getStats(source);
  }

As the source folder name doesn't fit the *.json mask, content is not explored. Did I misunderstand the purpose of the filter, or should only filenames be checked, and not folder names ?

Regards

[mummybot]

+1 I'm confused as well!

[mummybot]

fs-extra actually uses this library for copying, but checks whether the directory exists first and creates it if not. However I don't think this will address the ultimate filter issue.

[mummybot]

With the power of regex, you can solve this issue:

/^[A-Za-z\-\/]*(\.php|$)/

This will match:

• /Volumes/Storage/Work/TPBC/site/wp-content/themes/tpbc/src/components/header/components/search
• /Volumes/Storage/Work/TPBC/site/wp-content/themes/tpbc/src/components/header/components/search/search.php

But won't match:

• /Volumes/Storage/Work/TPBC/site/wp-content/themes/tpbc/src/components/header/components/search/search.js

Simply add additional file extensions to match to the regex or statement e.g. (\.php|\.html|$)

Running from package.json

"build:php": "ncp src build --filter=^[A-Za-z\\-\/]*\\(\\.php\\|$\\)",

It does copy all of the folders even if they are empty but hey, it works!