Link svn:externals in a git svn clone

git-svn-externals.js

// Run from the root path of your git-svn clone as
// node git-svn-externals.js

var exec    = require('child_process').exec,
    celeri  = require('celeri'),
    _       = require('underscore')
;

var spinner = celeri.loading('Finding svn externals. This will take a couple of minutes. ');

exec("git svn show-externals | grep -vE '#|^$'", function(err, stdout, stderr) {
  if (!err) {
    var lines = _.compact(stdout.split("\n"));
    _.each(lines, function(line) {
      var pathAndName = line.split(' ');
      if (pathAndName.length > 1) {
        if (_.last(pathAndName).indexOf('https') >= 0) {
          return;
        };
        
        // Paths come out in the following form:
        // /a/b/c/../../../d/e/f
        var index = _.first(pathAndName).indexOf('../')
        var targetDir = '.' + _.first(pathAndName).substr(0, index);
        var linkDir = _.first(pathAndName).substr(index);

        console.log('Linking ' + linkDir + ' into ' + targetDir + ' as ' + _.last(pathAndName));
        exec('cd ' + targetDir + ' && ln -s ' + linkDir + ' ' + _.last(pathAndName), function(err, stdout, stderr) {
          if (err) {
            console.error('oh noes: ' + err);
          };
        });
      };
    });
  };

  spinner.done('Success', true);
});