Current Dev State

static/js/ketcher2/node_modules/shelljs/src/touch.js

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+var common = require('./common');
+var fs = require('fs');
+
+common.register('touch', _touch, {
+  cmdOptions: {
+    'a': 'atime_only',
+    'c': 'no_create',
+    'd': 'date',
+    'm': 'mtime_only',
+    'r': 'reference',
+  },
+});
+
+//@
+//@ ### touch([options,] file [, file ...])
+//@ ### touch([options,] file_array)
+//@ Available options:
+//@
+//@ + `-a`: Change only the access time
+//@ + `-c`: Do not create any files
+//@ + `-m`: Change only the modification time
+//@ + `-d DATE`: Parse DATE and use it instead of current time
+//@ + `-r FILE`: Use FILE's times instead of current time
+//@
+//@ Examples:
+//@
+//@ ```javascript
+//@ touch('source.js');
+//@ touch('-c', '/path/to/some/dir/source.js');
+//@ touch({ '-r': FILE }, '/path/to/some/dir/source.js');
+//@ ```
+//@
+//@ Update the access and modification times of each FILE to the current time.
+//@ A FILE argument that does not exist is created empty, unless -c is supplied.
+//@ This is a partial implementation of *[touch(1)](http://linux.die.net/man/1/touch)*.
+function _touch(opts, files) {
+  if (!files) {
+    common.error('no files given');
+  } else if (typeof files === 'string') {
+    files = [].slice.call(arguments, 1);
+  } else {
+    common.error('file arg should be a string file path or an Array of string file paths');
+  }
+
+  files.forEach(function (f) {
+    touchFile(opts, f);
+  });
+  return '';
+}
+
+function touchFile(opts, file) {
+  var stat = tryStatFile(file);
+
+  if (stat && stat.isDirectory()) {
+    // don't error just exit
+    return;
+  }
+
+  // if the file doesn't already exist and the user has specified --no-create then
+  // this script is finished
+  if (!stat && opts.no_create) {
+    return;
+  }
+
+  // open the file and then close it. this will create it if it doesn't exist but will
+  // not truncate the file
+  fs.closeSync(fs.openSync(file, 'a'));
+
+  //
+  // Set timestamps
+  //
+
+  // setup some defaults
+  var now = new Date();
+  var mtime = opts.date || now;
+  var atime = opts.date || now;
+
+  // use reference file
+  if (opts.reference) {
+    var refStat = tryStatFile(opts.reference);
+    if (!refStat) {
+      common.error('failed to get attributess of ' + opts.reference);
+    }
+    mtime = refStat.mtime;
+    atime = refStat.atime;
+  } else if (opts.date) {
+    mtime = opts.date;
+    atime = opts.date;
+  }
+
+  if (opts.atime_only && opts.mtime_only) {
+    // keep the new values of mtime and atime like GNU
+  } else if (opts.atime_only) {
+    mtime = stat.mtime;
+  } else if (opts.mtime_only) {
+    atime = stat.atime;
+  }
+
+  fs.utimesSync(file, atime, mtime);
+}
+
+module.exports = _touch;
+
+function tryStatFile(filePath) {
+  try {
+    return fs.statSync(filePath);
+  } catch (e) {
+    return null;
+  }
+}