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	f, err := parseFlags(args, flagSpec{Values: []string{"--color"}, MaxPos: -1, Usage: usage})
 54	if err != nil {
 55		return c.fail(protocol.ExitUsage, "%v", err)
 56	}
 57	rest := f.Pos
 58	color, colorSet := strings.ToLower(f.Value("--color")), f.Has("--color")
 59	if len(rest) != 2 {
 60		return c.fail(protocol.ExitUsage, usage)
 61	}
 62	if colorSet && color != "" {
 63		if !labelColorPat.MatchString(color) {
 64			return c.fail(protocol.ExitUsage, "--color takes rrggbb (with or without #), or '' to clear")
 65		}
 66		color = "#" + strings.TrimPrefix(color, "#")
 67	}
 68	repo, code := resolveRepo(c, rest[0], policy.CanWrite)
 69	if code >= 0 {
 70		return code
 71	}
 72	if code := refuseArchived(c, repo); code >= 0 {
 73		return code
 74	}
 75	name := rest[1]
 76	if name == "" || len(name) > 50 {
 77		return c.fail(protocol.ExitUsage, "a label is 1 to 50 characters")
 78	}
 79	if !colorSet {
 80		// Keep the colour it has, if any; this is "make sure it exists".
 81		if labels, err := c.Store.ListLabels(repo.ID); err == nil {
 82			for _, l := range labels {
 83				if l.Name == name {
 84					color = l.Color
 85				}
 86			}
 87		}
 88	}
 89	if err := c.Store.SetLabel(repo.ID, name, color); err != nil {
 90		return c.fail(protocol.ExitFailure, "%v", err)
 91	}
 92	return c.emit(store.Label{Name: name, Color: color}, func(w io.Writer) {
 93		if color == "" {
 94			fmt.Fprintf(w, "label %s, no colour set\n", name)
 95			return
 96		}
 97		fmt.Fprintf(w, "label %s is %s\n", name, color)
 98	})
 99}
100
101func runLabelRemove(c *Ctx, args []string) int {
102	if len(args) != 2 {
103		return c.fail(protocol.ExitUsage, "usage: label remove <owner/name> <label>")
104	}
105	repo, code := resolveRepo(c, args[0], policy.CanWrite)
106	if code >= 0 {
107		return code
108	}
109	if code := refuseArchived(c, repo); code >= 0 {
110		return code
111	}
112	if err := c.Store.DeleteLabel(repo.ID, args[1]); err != nil {
113		if errors.Is(err, store.ErrNotFound) {
114			return c.fail(protocol.ExitNotFound, "no label %q in %s", args[1], repo.Path())
115		}
116		return c.fail(protocol.ExitFailure, "%v", err)
117	}
118	return c.emit(map[string]string{"removed": args[1]}, func(w io.Writer) {
119		fmt.Fprintf(w, "removed label %s\n", args[1])
120	})
121}