1package groups
2
3import (
4 "std"
5 "strconv"
6 "strings"
7
8 "gno.land/r/demo/users"
9)
10
11//----------------------------------------
12// private utility methods
13// XXX ensure these cannot be called from public.
14
15func getGroup(gid GroupID) *Group {
16 gidkey := groupIDKey(gid)
17 group_, exists := gGroups.Get(gidkey)
18 if !exists {
19 panic("group id (" + gid.String() + ") does not exists")
20 }
21 group := group_.(*Group)
22 return group
23}
24
25func incGetGroupID() GroupID {
26 gGroupsCtr++
27 return GroupID(gGroupsCtr)
28}
29
30func padLeft(str string, length int) string {
31 if len(str) >= length {
32 return str
33 }
34 return strings.Repeat(" ", length-len(str)) + str
35}
36
37func padZero(u64 uint64, length int) string {
38 str := strconv.Itoa(int(u64))
39 if len(str) >= length {
40 return str
41 }
42 return strings.Repeat("0", length-len(str)) + str
43}
44
45func groupIDKey(gid GroupID) string {
46 return padZero(uint64(gid), 10)
47}
48
49func memberIDKey(mid MemberID) string {
50 return padZero(uint64(mid), 10)
51}
52
53func indentBody(indent string, body string) string {
54 lines := strings.Split(body, "\n")
55 res := ""
56 for i, line := range lines {
57 if i > 0 {
58 res += "\n"
59 }
60 res += indent + line
61 }
62 return res
63}
64
65// NOTE: length must be greater than 3.
66func summaryOf(str string, length int) string {
67 lines := strings.SplitN(str, "\n", 2)
68 line := lines[0]
69 if len(line) > length {
70 line = line[:(length-3)] + "..."
71 } else if len(lines) > 1 {
72 // len(line) <= 80
73 line = line + "..."
74 }
75 return line
76}
77
78func displayAddressMD(addr std.Address) string {
79 user := users.GetUserByAddress(addr)
80 if user == nil {
81 return "[" + addr.String() + "](/r/demo/users:" + addr.String() + ")"
82 }
83 return "[@" + user.Name + "](/r/demo/users:" + user.Name + ")"
84}
85
86func usernameOf(addr std.Address) string {
87 user := users.GetUserByAddress(addr)
88 if user == nil {
89 panic("user not found")
90 }
91 return user.Name
92}
93
94func isValidPermission(perm Permission) bool {
95 return perm == EditPermission || perm == DeletePermission
96}
misc.gno
1.92 Kb ยท 96 lines
