github.com/abayer/test-infra@v0.0.5/mungegithub/mungers/matchers/command.go (about)

     1  /*
     2  Copyright 2016 The Kubernetes Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package matchers
    18  
    19  import (
    20  	"regexp"
    21  	"strings"
    22  
    23  	"github.com/google/go-github/github"
    24  )
    25  
    26  // Command is a way for human to interact with the bot
    27  type Command struct {
    28  	Name      string
    29  	Arguments string
    30  }
    31  
    32  var (
    33  	// Matches a command:
    34  	// - Line that starts with slash
    35  	// - followed by non-space characteres,
    36  	// - (optional) followed by space and arguments
    37  	commandRegex = regexp.MustCompile(`(?m)^/([^\s]+)[\t ]*([^\n\r]*)`)
    38  )
    39  
    40  // ParseCommands attempts to read a command from a comment
    41  // Returns nil if the comment doesn't contain a command
    42  func ParseCommands(comment *github.IssueComment) []*Command {
    43  	if comment == nil || comment.Body == nil {
    44  		return nil
    45  	}
    46  
    47  	commands := []*Command{}
    48  	matches := commandRegex.FindAllStringSubmatch(*comment.Body, -1)
    49  	for _, match := range matches {
    50  		commands = append(commands, &Command{
    51  			Name:      strings.ToUpper(match[1]),
    52  			Arguments: strings.TrimSpace(match[2]),
    53  		})
    54  	}
    55  
    56  	return commands
    57  }
    58  
    59  // String displays the command
    60  func (n *Command) String() string {
    61  	str := "/" + strings.ToUpper(n.Name)
    62  	args := strings.TrimSpace(n.Arguments)
    63  	if args != "" {
    64  		str += " " + args
    65  	}
    66  	return str
    67  }