internal/control/label.go

  1package control
  2
  3import (
  4	"errors"
  5	"fmt"
  6	"io"
  7	"regexp"
  8	"strings"
  9
 10	"gitbay.org/gitbay/internal/policy"
 11	"gitbay.org/gitbay/internal/protocol"
 12	"gitbay.org/gitbay/internal/store"
 13)
 14
 15func init() {
 16	register(Command{Path: []string{"label", "list"},
 17		Summary: "list a repository's issue labels with colour and use",
 18		Usage:   "label list <owner/name>", ReadOnly: true, Run: runLabelList})
 19	register(Command{Path: []string{"label", "set"},
 20		Summary: "create a label or set its colour",
 21		Usage:   "label set <owner/name> <label> [--color rrggbb|'']", Run: runLabelSet})
 22	register(Command{Path: []string{"label", "remove"},
 23		Summary: "remove a label from the repository and from every issue",
 24		Usage:   "label remove <owner/name> <label>", Run: runLabelRemove})
 25}
 26
 27// A colour is six hex digits, with or without the hash: over bare ssh a
 28// bare # starts a comment for the remote tokenizer, so the form without
 29// it is the one that types cleanly there.
 30var labelColorPat = regexp.MustCompile(`^#?[0-9a-fA-F]{6}$`)
 31
 32func runLabelList(c *Ctx, args []string) int {
 33	if len(args) != 1 {
 34		return c.fail(protocol.ExitUsage, "usage: label list <owner/name>")
 35	}
 36	repo, code := resolveRepo(c, args[0], policy.CanRead)
 37	if code >= 0 {
 38		return code
 39	}
 40	labels, err := c.Store.ListLabels(repo.ID)
 41	if err != nil {
 42		return c.fail(protocol.ExitFailure, "%v", err)
 43	}
 44	return c.emit(labels, func(w io.Writer) {
 45		for _, l := range labels {
 46			fmt.Fprintf(w, "%s\t%s\t%d\n", l.Name, l.Color, l.Issues)
 47		}
 48	})
 49}
 50
 51func runLabelSet(c *Ctx, args []string) int {
 52	const usage = "usage: label set <owner/name> <label> [--color #rrggbb|'']"
 53	var rest []string
 54	color, colorSet := "", false
 55	for i := 0; i < len(args); i++ {
 56		if args[i] == "--color" {
 57			if i+1 >= len(args) {
 58				return c.fail(protocol.ExitUsage, "--color requires rrggbb, or '' to clear")
 59			}
 60			color, colorSet = strings.ToLower(args[i+1]), true
 61			i++
 62			continue
 63		}
 64		rest = append(rest, args[i])
 65	}
 66	if len(rest) != 2 {
 67		return c.fail(protocol.ExitUsage, usage)
 68	}
 69	if colorSet && color != "" {
 70		if !labelColorPat.MatchString(color) {
 71			return c.fail(protocol.ExitUsage, "--color takes rrggbb (with or without #), or '' to clear")
 72		}
 73		color = "#" + strings.TrimPrefix(color, "#")
 74	}
 75	repo, code := resolveRepo(c, rest[0], policy.CanWrite)
 76	if code >= 0 {
 77		return code
 78	}
 79	if code := refuseArchived(c, repo); code >= 0 {
 80		return code
 81	}
 82	name := rest[1]
 83	if name == "" || len(name) > 50 {
 84		return c.fail(protocol.ExitUsage, "a label is 1 to 50 characters")
 85	}
 86	if !colorSet {
 87		// Keep the colour it has, if any; this is "make sure it exists".
 88		if labels, err := c.Store.ListLabels(repo.ID); err == nil {
 89			for _, l := range labels {
 90				if l.Name == name {
 91					color = l.Color
 92				}
 93			}
 94		}
 95	}
 96	if err := c.Store.SetLabel(repo.ID, name, color); err != nil {
 97		return c.fail(protocol.ExitFailure, "%v", err)
 98	}
 99	return c.emit(store.Label{Name: name, Color: color}, func(w io.Writer) {
100		if color == "" {
101			fmt.Fprintf(w, "label %s, no colour set\n", name)
102			return
103		}
104		fmt.Fprintf(w, "label %s is %s\n", name, color)
105	})
106}
107
108func runLabelRemove(c *Ctx, args []string) int {
109	if len(args) != 2 {
110		return c.fail(protocol.ExitUsage, "usage: label remove <owner/name> <label>")
111	}
112	repo, code := resolveRepo(c, args[0], policy.CanWrite)
113	if code >= 0 {
114		return code
115	}
116	if code := refuseArchived(c, repo); code >= 0 {
117		return code
118	}
119	if err := c.Store.DeleteLabel(repo.ID, args[1]); err != nil {
120		if errors.Is(err, store.ErrNotFound) {
121			return c.fail(protocol.ExitNotFound, "no label %q in %s", args[1], repo.Path())
122		}
123		return c.fail(protocol.ExitFailure, "%v", err)
124	}
125	return c.emit(map[string]string{"removed": args[1]}, func(w io.Writer) {
126		fmt.Fprintf(w, "removed label %s\n", args[1])
127	})
128}