commit 796312ec3ec3a5098ea25a0f291711d31c0f97cf
parent a23d08314790f6edbe7f0df9bc64c00a23d4cfd0
Author: Jared Tobin <jared@jtobin.io>
Date: Mon, 8 Oct 2018 10:01:32 +1300
Add hex2patq and patq2hex.
Plus a sanity check.
Diffstat:
2 files changed, 30 insertions(+), 1 deletion(-)
diff --git a/src/index.js b/src/index.js
@@ -4,7 +4,7 @@
const bnjs = require('bn.js')
const { reduce, concat, chunk, isUndefined,
- isString, every, map } = require('lodash')
+ isString, every, map, split } = require('lodash')
const raku = [
3077398253,
@@ -51,6 +51,12 @@ remlysfynwerrycsugnysnyllyndyndemluxfedsedbecmun\
lyrtesmudnytbyrsenwegfyrmurtelreptegpecnelnevfes\
`
+// split string at the indicated index
+const splitAt = (index, str) => [str.slice(0, index), str.slice(index)];
+
+// convert a decimal number to a hex string
+const dec2hex = dec => dec.toString(16).padStart(2, '0')
+
// groups suffixes into array of syllables
const suffixes = suf.match(/.{1,3}/g)
@@ -398,6 +404,21 @@ const patq = (n) => {
acc + (acc === '~' ? '' : '-') + name(elem), '~')
}
+hex2patq = hex => patq(new bnjs(hex, 'hex'))
+
+patq2hex = str => {
+ const chunks = split(str.slice(1), '-')
+ const splat = map(chunks, chunk => {
+ let syls = splitAt(3, chunk)
+ let hex =
+ syls[1] === ''
+ ? dec2hex(getSuffixIndex(syls[0]))
+ : dec2hex(getPrefixIndex(syls[0])) +
+ dec2hex(getSuffixIndex(syls[1]))
+ return hex
+ })
+ return splat.join('')
+}
// returns the class of a ship from it's name
const tierOfpatp = name => {
@@ -544,6 +565,8 @@ module.exports = {
patp: patp,
patq: patq,
+ hex2patq: hex2patq,
+ patq2hex: patq2hex,
sein: sein,
_clan: clan,
diff --git a/test/core.test.js b/test/core.test.js
@@ -155,6 +155,12 @@ test('patq correctly encodes 0x1010101010101010102 as @q', () => {
expect(ob.patq(input)).toBe(expected);
});
+test('hex2patq works', () => {
+ let hex = '6d7920617765736f6d65207572626974207469636b65742c206920616d20736f206c75636b79';
+ let expected = '~tastud-holruc-sidwet-salpel-taswet-holdeg-paddec-davdut-holdut-davwex-balwet-divwen-holdet-holruc-taslun-salpel-holtux-dacwex-baltud';
+ expect(ob.hex2patq(hex)).toBe(expected);
+})
+
test('clan works as expected', () => {
expect(ob._clan(new bnjs(0))).toBe('czar');
expect(ob._clan(new bnjs(255))).toBe('czar');