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Viewing file:     mv.js (2.2 KB)      -rw-r--r--

var fs = require('fs');
var path = require('path');
var common = require('./common');

//@
//@ ### mv(source [, source ...], dest')
//@ ### mv(source_array, dest')
//@ Available options:
//@
//@ + `f`: force
//@
//@ Examples:
//@
//@ ```javascript
//@ mv('-f', 'file', 'dir/');
//@ mv('file1', 'file2', 'dir/');
//@ mv(['file1', 'file2'], 'dir/'); // same as above
//@ ```
//@
//@ Moves files. The wildcard `*` is accepted.
function _mv(options, sources, dest) {
  options = common.parseOptions(options, {
    'f': 'force'
  });

  // Get sources, dest
  if (arguments.length < 3) {
    common.error('missing <source> and/or <dest>');
  } else if (arguments.length > 3) {
    sources = [].slice.call(arguments, 1, arguments.length - 1);
    dest = arguments[arguments.length - 1];
  } else if (typeof sources === 'string') {
    sources = [sources];
  } else if ('length' in sources) {
    sources = sources; // no-op for array
  } else {
    common.error('invalid arguments');
  }

  sources = common.expand(sources);

  var exists = fs.existsSync(dest),
      stats = exists && fs.statSync(dest);

  // Dest is not existing dir, but multiple sources given
  if ((!exists || !stats.isDirectory()) && sources.length > 1)
    common.error('dest is not a directory (too many sources)');

  // Dest is an existing file, but no -f given
  if (exists && stats.isFile() && !options.force)
    common.error('dest file already exists: ' + dest);

  sources.forEach(function(src) {
    if (!fs.existsSync(src)) {
      common.error('no such file or directory: '+src, true);
      return; // skip file
    }

    // If here, src exists

    // When copying to '/path/dir':
    //    thisDest = '/path/dir/file1'
    var thisDest = dest;
    if (fs.existsSync(dest) && fs.statSync(dest).isDirectory())
      thisDest = path.normalize(dest + '/' + path.basename(src));

    if (fs.existsSync(thisDest) && !options.force) {
      common.error('dest file already exists: ' + thisDest, true);
      return; // skip file
    }

    if (path.resolve(src) === path.dirname(path.resolve(thisDest))) {
      common.error('cannot move to self: '+src, true);
      return; // skip file
    }

    fs.renameSync(src, thisDest);
  }); // forEach(src)
} // mv
module.exports = _mv;