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Tog/ToggleJS

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exports

method
module.exports()

The alias toggle/gulp plugin looks at the vinyl file for a file.togMetadata.alias url property.
If this property exists, it will generate a new static html file that
redirects via an html meta refresh to the original file's new location.

This was written to support redirection as described in the following blog post

Sample post frontmatter:

---
alias: /blog/someDir/12345
---
my blog content here...

will generate an HTML redirection page at /blog/someDir/12345/index.html.

gulpfile.js usage:

var tog = require("toggle");

...
  .pipe(tog.alias())

module.exports = function () {
  var File = require('vinyl');
  var through = require('through2');
  return through.obj(function (file, enc, callback) {

    if (!file.togMetadata) {
      this.emit('error', togError.missingTogMetadata(PLUGIN_NAME));
      return callback();
    }

    if (file.togMetadata.alias) {
      var contents = '<!DOCTYPE html>';
      contents += '<html>\n';
      contents += '<head>\n';
      contents += '<link rel="canonical" href="' + file.togMetadata.url + '"/>\n';
      contents += '<meta http-equiv="content-type" content="text/html; charset=utf-8" />\n';
      contents += '<meta http-equiv="refresh" content="0;url=' + file.togMetadata.url + '" />\n';
      contents += '</head>\n';
      contents += '</html>';

      var newPath = path.join(file.base, file.togMetadata.alias, 'index.html');

      var newFile = new File({
        cwd: file.cwd,
        base: file.base,
        path: newPath,
        contents: new Buffer(contents),
      });
      this.push(newFile);
    }

    this.push(file);
    return callback();
  });
};