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Use alphabet from js-sdk

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This commit is contained in:
Michael Telatynski 2021-06-14 21:32:11 +01:00
parent 8fd72fcf79
commit 2879b9086c
2 changed files with 26 additions and 37 deletions
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13
src/utils/stringOrderField.ts
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@ -14,23 +14,16 @@ See the License for the specific language governing permissions and
limitations under the License.
*/
import { alphabetPad, baseToString, stringToBase } from "matrix-js-sdk/src/utils";
import { alphabetPad, baseToString, stringToBase, DEFAULT_ALPHABET } from "matrix-js-sdk/src/utils";
import { reorder } from "./arrays";
export const ALPHABET_START = 0x20;
export const ALPHABET_END = 0x7E;
export const ALPHABET = new Array(1 + ALPHABET_END - ALPHABET_START)
.fill(undefined)
.map((_, i) => String.fromCharCode(ALPHABET_START + i))
.join("");
export const midPointsBetweenStrings = (
a: string,
b: string,
count: number,
maxLen: number,
alphabet = ALPHABET,
alphabet = DEFAULT_ALPHABET,
): string[] => {
const padN = Math.min(Math.max(a.length, b.length), maxLen);
const padA = alphabetPad(a, padN, alphabet);
@ -144,7 +137,7 @@ export const reorderLexicographically = (
const prevOrder = newOrder[leftBoundIdx - 1]?.order ?? "";
const nextOrder = newOrder[rightBoundIdx + 1]?.order
?? String.fromCharCode(ALPHABET_END).repeat(prevOrder.length || 1);
?? DEFAULT_ALPHABET.charAt(DEFAULT_ALPHABET.length - 1).repeat(prevOrder.length || 1);
const changes = midPointsBetweenStrings(prevOrder, nextOrder, 1 + rightBoundIdx - leftBoundIdx, maxLen);