quay/static/js/services/image-metadata-service.js

/**
 * Helper service for returning information extracted from repository image metadata.
 */
angular.module('quay').factory('ImageMetadataService', ['UtilService', function(UtilService) {
  var metadataService = {};
  metadataService.getFormattedCommand = function(image) {
    if (!image || !image.command || !image.command.length) {
      return '';
    }

    var getCommandStr = function(command) {
      // Handle /bin/sh commands specially.
      if (command.length > 2 && command[0] == '/bin/sh' && command[1] == '-c') {
        return command[2];
      }

      return command.join(' ');
    };

    return getCommandStr(image.command);
  };

  metadataService.getEscapedFormattedCommand = function(image) {
    return UtilService.textToSafeHtml(metadataService.getFormattedCommand(image));
  };

  metadataService.getImageCommand = function(image, imageId) {
    if (!image) {
      return null;
    }

    if (!image.__imageMap) {
      image.__imageMap = {};
      image.__imageMap[image.id] = image;

      for (var i = 0; i < image.history.length; ++i) {
        var cimage = image.history[i];
        image.__imageMap[cimage.id] = cimage;
      }
    }

    var found = image.__imageMap[imageId];
    if (!found) {
      return null;
    }

    return metadataService.getDockerfileCommand(found.command);
  };

  metadataService.getDockerfileCommand = function(command) {
    if (!command) { return ''; }
    command = command.join(' ').split(' ');

    // ["/bin/sh", "-c", "#(nop)", "RUN", "foo"]
    if (command[0] != '/bin/sh' || command[1] != '-c') { return ''; }

    var commandPrefix = '#(nop)';
    if (command[2] != commandPrefix) {
      return 'RUN ' + command.slice(2).join(' ');
    }

    return command.slice(3).join(' ');
  };

  return metadataService;
}]);