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-rw-r--r--libs/base-x/LICENSE.md22
-rw-r--r--libs/base-x/package.json44
-rw-r--r--libs/base-x/readme.md4
-rw-r--r--libs/base-x/ts_src/index.ts161
-rw-r--r--libs/base-x/tsconfig.json31
5 files changed, 262 insertions, 0 deletions
diff --git a/libs/base-x/LICENSE.md b/libs/base-x/LICENSE.md
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+++ b/libs/base-x/LICENSE.md
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1The MIT License (MIT)
2
3Copyright (c) 2018 base-x contributors
4Copyright (c) 2014-2018 The Bitcoin Core developers
5
6Permission is hereby granted, free of charge, to any person obtaining a copy
7of this software and associated documentation files (the "Software"), to deal
8in the Software without restriction, including without limitation the rights
9to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10copies of the Software, and to permit persons to whom the Software is
11furnished to do so, subject to the following conditions:
12
13The above copyright notice and this permission notice shall be included in all
14copies or substantial portions of the Software.
15
16THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22SOFTWARE.
diff --git a/libs/base-x/package.json b/libs/base-x/package.json
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+++ b/libs/base-x/package.json
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1{
2 "name": "base-x",
3 "version": "3.0.7",
4 "description": "Fast base encoding / decoding of any given alphabet",
5 "keywords": [
6 "base-x",
7 "base58",
8 "base62",
9 "base64",
10 "crypto",
11 "crytography",
12 "decode",
13 "decoding",
14 "encode",
15 "encoding"
16 ],
17 "homepage": "https://github.com/cryptocoinjs/base-x",
18 "bugs": {
19 "url": "https://github.com/cryptocoinjs/base-x/issues"
20 },
21 "license": "MIT",
22 "author": "Daniel Cousens",
23 "files": [
24 "src"
25 ],
26 "main": "src/index.js",
27 "types": "src/index.d.ts",
28 "repository": {
29 "type": "git",
30 "url": "https://github.com/cryptocoinjs/base-x.git"
31 },
32 "scripts": {
33 "build": "tsc -p ./tsconfig.json ; standard --fix; browserify src/index.js --standalone basex > /tmp/base-x.js"
34 },
35 "devDependencies": {
36 "@types/node": "12.0.10",
37 "standard": "^10.0.3",
38 "tape": "^4.5.1",
39 "typescript": "3.5.2"
40 },
41 "dependencies": {
42 "safe-buffer": "^5.0.1"
43 }
44}
diff --git a/libs/base-x/readme.md b/libs/base-x/readme.md
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1Build (will create a bundle and copy it to /tmp/base-x.js):
2
3 npm install
4 npm run build
diff --git a/libs/base-x/ts_src/index.ts b/libs/base-x/ts_src/index.ts
new file mode 100644
index 0000000..2fbedf5
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+++ b/libs/base-x/ts_src/index.ts
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1// base-x encoding / decoding
2// Copyright (c) 2018 base-x contributors
3// Copyright (c) 2014-2018 The Bitcoin Core developers (base58.cpp)
4// Distributed under the MIT software license, see the accompanying
5// file LICENSE or http://www.opensource.org/licenses/mit-license.php.
6
7// @ts-ignore
8const _Buffer = require('safe-buffer').Buffer;
9
10function base (ALPHABET: string): base.BaseConverter {
11 if (ALPHABET.length >= 255) throw new TypeError('Alphabet too long')
12
13 const BASE_MAP = new Uint8Array(256)
14 BASE_MAP.fill(255)
15
16 for (let i = 0; i < ALPHABET.length; i++) {
17 const x = ALPHABET.charAt(i)
18 const xc = x.charCodeAt(0)
19
20 if (BASE_MAP[xc] !== 255) throw new TypeError(x + ' is ambiguous')
21 BASE_MAP[xc] = i
22 }
23
24 const BASE = ALPHABET.length
25 const LEADER = ALPHABET.charAt(0)
26 const FACTOR = Math.log(BASE) / Math.log(256) // log(BASE) / log(256), rounded up
27 const iFACTOR = Math.log(256) / Math.log(BASE) // log(256) / log(BASE), rounded up
28
29 function encode (source: Buffer): string {
30 if (!_Buffer.isBuffer(source)) throw new TypeError('Expected Buffer')
31 if (source.length === 0) return ''
32
33 // Skip & count leading zeroes.
34 let zeroes = 0
35 let length = 0
36 let pbegin = 0
37 const pend = source.length
38
39 while (pbegin !== pend && source[pbegin] === 0) {
40 pbegin++
41 zeroes++
42 }
43
44 // Allocate enough space in big-endian base58 representation.
45 const size = ((pend - pbegin) * iFACTOR + 1) >>> 0
46 const b58 = new Uint8Array(size)
47
48 // Process the bytes.
49 while (pbegin !== pend) {
50 let carry = source[pbegin]
51
52 // Apply "b58 = b58 * 256 + ch".
53 let i = 0
54 for (let it1 = size - 1; (carry !== 0 || i < length) && (it1 !== -1); it1--, i++) {
55 carry += (256 * b58[it1]) >>> 0
56 b58[it1] = (carry % BASE) >>> 0
57 carry = (carry / BASE) >>> 0
58 }
59
60 if (carry !== 0) throw new Error('Non-zero carry')
61 length = i
62 pbegin++
63 }
64
65 // Skip leading zeroes in base58 result.
66 let it2 = size - length
67 while (it2 !== size && b58[it2] === 0) {
68 it2++
69 }
70
71 // Translate the result into a string.
72 let str = LEADER.repeat(zeroes)
73 for (; it2 < size; ++it2) str += ALPHABET.charAt(b58[it2])
74
75 return str
76 }
77
78 function decodeUnsafe (source: string): Buffer | undefined {
79 if (typeof source !== 'string') throw new TypeError('Expected String')
80 if (source.length === 0) return _Buffer.alloc(0)
81
82 let psz = 0
83
84 // Skip leading spaces.
85 if (source[psz] === ' ') return
86
87 // Skip and count leading '1's.
88 let zeroes = 0
89 let length = 0
90 while (source[psz] === LEADER) {
91 zeroes++
92 psz++
93 }
94
95 // Allocate enough space in big-endian base256 representation.
96 const size = (((source.length - psz) * FACTOR) + 1) >>> 0 // log(58) / log(256), rounded up.
97 const b256 = new Uint8Array(size)
98
99 // Process the characters.
100 while (source[psz]) {
101 // Decode character
102 let carry = BASE_MAP[source.charCodeAt(psz)]
103
104 // Invalid character
105 if (carry === 255) return
106
107 let i = 0
108 for (let it3 = size - 1; (carry !== 0 || i < length) && (it3 !== -1); it3--, i++) {
109 carry += (BASE * b256[it3]) >>> 0
110 b256[it3] = (carry % 256) >>> 0
111 carry = (carry / 256) >>> 0
112 }
113
114 if (carry !== 0) throw new Error('Non-zero carry')
115 length = i
116 psz++
117 }
118
119 // Skip trailing spaces.
120 if (source[psz] === ' ') return
121
122 // Skip leading zeroes in b256.
123 let it4 = size - length
124 while (it4 !== size && b256[it4] === 0) {
125 it4++
126 }
127
128 const vch = _Buffer.allocUnsafe(zeroes + (size - it4))
129 vch.fill(0x00, 0, zeroes)
130
131 let j = zeroes
132 while (it4 !== size) {
133 vch[j++] = b256[it4++]
134 }
135
136 return vch
137 }
138
139 function decode (string: string): Buffer {
140 const buffer = decodeUnsafe(string)
141 if (buffer) return buffer
142
143 throw new Error('Non-base' + BASE + ' character')
144 }
145
146 return {
147 encode: encode,
148 decodeUnsafe: decodeUnsafe,
149 decode: decode
150 }
151}
152
153export = base;
154
155declare namespace base {
156 interface BaseConverter {
157 encode(buffer: Buffer): string;
158 decodeUnsafe(string: string): Buffer | undefined;
159 decode(string: string): Buffer;
160 }
161}
diff --git a/libs/base-x/tsconfig.json b/libs/base-x/tsconfig.json
new file mode 100644
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1{
2 "compilerOptions": {
3 "target": "ES5",
4 "module": "commonjs",
5 "outDir": "./src",
6 "declaration": true,
7 "rootDir": "./ts_src",
8 "types": [
9 "node"
10 ],
11 "allowJs": false,
12 "strict": true,
13 "noImplicitAny": true,
14 "strictNullChecks": true,
15 "strictFunctionTypes": true,
16 "strictBindCallApply": true,
17 "strictPropertyInitialization": true,
18 "noImplicitThis": true,
19 "alwaysStrict": true,
20 "esModuleInterop": false,
21 "noUnusedLocals": true,
22 "noUnusedParameters": true
23 },
24 "include": [
25 "ts_src/**/*.ts"
26 ],
27 "exclude": [
28 "**/*.spec.ts",
29 "node_modules/**/*"
30 ]
31}