-
Notifications
You must be signed in to change notification settings - Fork 0
/
parser.go
238 lines (221 loc) · 4.61 KB
/
parser.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
package main
import (
"fmt"
"math"
"strconv"
"strings"
)
const (
emptyMark = iota
tiledeMark
hatMark
biggerMark
sameBiggerMark
smallerMark
sameSmallerMark
equalMark
)
type specifyVersion interface {
version() int
}
type (
bigger int
smaller int
sameBigger int
sameSmaller int
same int
asterisk struct{}
)
func (i bigger) version() int { return int(i) }
func (i smaller) version() int { return int(i) }
func (i sameBigger) version() int { return int(i) }
func (i sameSmaller) version() int { return int(i) }
func (i same) version() int { return int(i) }
func (i asterisk) version() int { return 0 }
type version struct {
major specifyVersion
minor specifyVersion
patch specifyVersion
}
func compareVersion(number int, version specifyVersion) (match, confirm bool) {
vint := version.version()
switch v := version.(type) {
case bigger:
return vint < number, vint < number
case smaller:
return vint > number, vint > number
case sameBigger:
if vint == number {
return true, false
}
return vint < number, vint < number
case sameSmaller:
if vint == number {
return true, false
}
return vint > number, vint > number
case same:
return vint == number, false
case asterisk:
return true, false
default:
panic(fmt.Sprintf("unknown type %T", v))
}
}
func parseVersionString(str string) (*version, error) {
str = strings.Trim(str, "v/")
splits := strings.Split(str, ".")
if len(splits) == 0 {
return nil, fmt.Errorf("%s is not support format", str)
}
first := splits[0]
if len(first) == 0 {
return nil, fmt.Errorf("%s is not support format", str)
}
var typ int
switch first[0] {
case '~':
typ = tiledeMark
case '^':
typ = hatMark
case '<':
if strings.HasPrefix(first, "<=") {
typ = sameSmallerMark
} else {
typ = smallerMark
}
case '>':
if strings.HasPrefix(first, ">=") {
typ = sameBiggerMark
} else {
typ = biggerMark
}
}
v := &version{
major: asterisk{},
minor: asterisk{},
patch: asterisk{},
}
for i, numstr := range splits {
if numstr == "X" || numstr == "x" {
continue
}
num, err := strconv.ParseInt(strings.TrimLeft(numstr, "^~<>="), 10, 64)
if err != nil {
return nil, err
}
switch i {
case 0:
switch typ {
case biggerMark:
if len(splits) == 1 {
v.major = bigger(num)
} else {
v.major = sameBigger(num)
}
case smallerMark:
if len(splits) == 1 {
v.major = smaller(num)
} else {
v.major = sameSmaller(num)
}
case sameBiggerMark:
v.major = sameBigger(num)
case sameSmallerMark:
v.major = sameSmaller(num)
default:
v.major = same(num)
}
case 1:
switch typ {
case biggerMark:
if len(splits) == 2 {
v.minor = bigger(num)
} else {
v.minor = sameBigger(num)
}
case smallerMark:
if len(splits) == 2 {
v.minor = smaller(num)
} else {
v.minor = sameSmaller(num)
}
case sameBiggerMark:
v.minor = sameBigger(num)
case sameSmallerMark:
v.minor = sameSmaller(num)
default:
v.minor = same(num)
}
case 2:
switch typ {
case emptyMark:
v.patch = same(num)
case tiledeMark:
v.patch = sameBigger(num)
case hatMark:
if v.major == same(0) && v.minor == same(0) {
v.patch = same(num)
} else {
v.patch = sameBigger(num)
}
case biggerMark:
v.patch = bigger(num)
case smallerMark:
v.patch = smaller(num)
case sameBiggerMark:
v.patch = sameBigger(num)
case sameSmallerMark:
v.patch = sameSmaller(num)
}
}
}
return v, nil
}
func compareVersionString(numberStrs []string, v *version) (bool, error) {
if len(numberStrs) != 3 {
return false, fmt.Errorf("%v is invalid format", numberStrs)
}
major, err := strconv.ParseInt(numberStrs[0], 10, 64)
if err != nil {
return false, err
}
minor, err := strconv.ParseInt(numberStrs[1], 10, 64)
if err != nil {
return false, err
}
patch, err := strconv.ParseInt(numberStrs[2], 10, 64)
if err != nil {
return false, err
}
match, confirm := compareVersion(int(major), v.major)
if confirm {
return true, nil
}
if !match {
return false, nil
}
match, confirm = compareVersion(int(minor), v.minor)
if confirm {
return true, nil
}
if !match {
return false, nil
}
match, _ = compareVersion(int(patch), v.patch)
return match, nil
}
func mustParse(numberStr string) int {
num, err := strconv.ParseInt(numberStr, 10, 64)
if err != nil {
panic(err)
}
return int(num)
}
func calcPriority(splitVersion []string) int {
var priority int
for i, verStr := range splitVersion {
priority += mustParse(verStr) * int(math.Pow(10, float64(3-i)))
}
return priority
}