11651828057

Committed 03 Nov 2024 01:38PM UTC coverage: 97.732% (-2.0%) from 99.738%

Build # 11651828057

Build Type

Pull #17

github

Committed by

fogfish

Commit Message

update CI/CD

Pull Request Pull Request #17: support base62 codec

Run Details

51 of 60 new or added lines in 2 files covered. (85.0%)

431 of 441 relevant lines covered (97.73%)

1.06 hits per line

Source File
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86.0

/base62.go

1	/*
2
3	Copyright 2012 Dmitry Kolesnikov, All Rights Reserved
4
5	Licensed under the Apache License, Version 2.0 (the "License");
6	you may not use this file except in compliance with the License.
7	You may obtain a copy of the License at
8
9	http://www.apache.org/licenses/LICENSE-2.0
10
11	Unless required by applicable law or agreed to in writing, software
12	distributed under the License is distributed on an "AS IS" BASIS,
13	WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14	See the License for the specific language governing permissions and
15	limitations under the License.
16
17	*/
18
19	package guid
20
21	import (
22	"fmt"
23	"math"
24	)
25
26	var (
27	encoder = [62]byte{'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z'}
28	decoder = [256]byte{255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 255, 255, 255, 255, 255, 255, 255, 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, 255, 255, 255, 255, 255, 255, 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, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255}
29	)
30
31	func encode62(src []byte) []byte {	1✔
32	if len(src) == 0 {	1✔
NEW 33	return nil	×
NEW 34	}	×
35
36	rs := 0	1✔
37	cs := int(math.Ceil(math.Log(256) / math.Log(62) * float64(len(src))))	1✔
38	dst := make([]byte, cs)	1✔
39	for i := range src {	2✔
40	c := 0	1✔
41	v := int(src[i])	1✔
42	for j := cs - 1; j >= 0 && (v != 0 \|\| c < rs); j-- {	2✔
43	v += 256 * int(dst[j])	1✔
44	dst[j] = byte(v % 62)	1✔
45	v /= 62	1✔
46	c++	1✔
47	}	1✔
48	rs = c	1✔
49	}
50	for i := range dst {	2✔
51	dst[i] = encoder[dst[i]]	1✔
52	}	1✔
53	if cs > rs {	2✔
54	return dst[cs-rs:]	1✔
55	}	1✔
56	return dst	1✔
57	}
58
59	func decode62(src []byte) ([]byte, error) {	1✔
60	if len(src) == 0 {	1✔
NEW 61	return nil, nil	×
NEW 62	}	×
63
64	rs := 0	1✔
65	cs := int(math.Ceil(math.Log(62) / math.Log(256) * float64(len(src))))	1✔
66	dst := make([]byte, cs)	1✔
67	for i := range src {	2✔
68	if src[i] == '\n' \|\| src[i] == '\r' {	1✔
NEW 69	continue	×
70	}
71	c := 0	1✔
72	v := int(decoder[src[i]])	1✔
73	if v == 255 {	1✔
NEW 74	return nil, fmt.Errorf("corrupted input: %v", src[i])	×
NEW 75	}	×
76	for j := cs - 1; j >= 0 && (v != 0 \|\| c < rs); j-- {	2✔
77	v += 62 * int(dst[j])	1✔
78	dst[j] = byte(v % 256)	1✔
79	v /= 256	1✔
80	c++	1✔
81	}	1✔
82	rs = c	1✔
83	}
84	if cs > rs {	2✔
85	return dst[cs-rs:], nil	1✔
86	}	1✔
87	return dst, nil	1✔
88	}

fogfish / guid / 11651828057

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