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-rw-r--r--std/bytes/mod.ts190
1 files changed, 0 insertions, 190 deletions
diff --git a/std/bytes/mod.ts b/std/bytes/mod.ts
deleted file mode 100644
index bb2b7d46e..000000000
--- a/std/bytes/mod.ts
+++ /dev/null
@@ -1,190 +0,0 @@
-// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
-
-/** Find first index of binary pattern from source. If not found, then return -1
- * @param source source array
- * @param pat pattern to find in source array
- * @param start the index to start looking in the source
- */
-export function indexOf(
- source: Uint8Array,
- pat: Uint8Array,
- start = 0,
-): number {
- if (start >= source.length) {
- return -1;
- }
- if (start < 0) {
- start = 0;
- }
- const s = pat[0];
- for (let i = start; i < source.length; i++) {
- if (source[i] !== s) continue;
- const pin = i;
- let matched = 1;
- let j = i;
- while (matched < pat.length) {
- j++;
- if (source[j] !== pat[j - pin]) {
- break;
- }
- matched++;
- }
- if (matched === pat.length) {
- return pin;
- }
- }
- return -1;
-}
-
-/** Find last index of binary pattern from source. If not found, then return -1.
- * @param source source array
- * @param pat pattern to find in source array
- * @param start the index to start looking in the source
- */
-export function lastIndexOf(
- source: Uint8Array,
- pat: Uint8Array,
- start = source.length - 1,
-): number {
- if (start < 0) {
- return -1;
- }
- if (start >= source.length) {
- start = source.length - 1;
- }
- const e = pat[pat.length - 1];
- for (let i = start; i >= 0; i--) {
- if (source[i] !== e) continue;
- const pin = i;
- let matched = 1;
- let j = i;
- while (matched < pat.length) {
- j--;
- if (source[j] !== pat[pat.length - 1 - (pin - j)]) {
- break;
- }
- matched++;
- }
- if (matched === pat.length) {
- return pin - pat.length + 1;
- }
- }
- return -1;
-}
-
-/** Check whether binary arrays are equal to each other.
- * @param a first array to check equality
- * @param b second array to check equality
- */
-export function equals(a: Uint8Array, b: Uint8Array): boolean {
- if (a.length !== b.length) return false;
- for (let i = 0; i < b.length; i++) {
- if (a[i] !== b[i]) return false;
- }
- return true;
-}
-
-/** Check whether binary array starts with prefix.
- * @param source source array
- * @param prefix prefix array to check in source
- */
-export function startsWith(source: Uint8Array, prefix: Uint8Array): boolean {
- for (let i = 0, max = prefix.length; i < max; i++) {
- if (source[i] !== prefix[i]) return false;
- }
- return true;
-}
-
-/** Check whether binary array ends with suffix.
- * @param source source array
- * @param suffix suffix array to check in source
- */
-export function endsWith(source: Uint8Array, suffix: Uint8Array): boolean {
- for (
- let srci = source.length - 1, sfxi = suffix.length - 1;
- sfxi >= 0;
- srci--, sfxi--
- ) {
- if (source[srci] !== suffix[sfxi]) return false;
- }
- return true;
-}
-
-/** Repeat bytes. returns a new byte slice consisting of `count` copies of `b`.
- * @param origin The origin bytes
- * @param count The count you want to repeat.
- * @throws `RangeError` When count is negative
- */
-export function repeat(origin: Uint8Array, count: number): Uint8Array {
- if (count === 0) {
- return new Uint8Array();
- }
-
- if (count < 0) {
- throw new RangeError("bytes: negative repeat count");
- } else if ((origin.length * count) / count !== origin.length) {
- throw new Error("bytes: repeat count causes overflow");
- }
-
- const int = Math.floor(count);
-
- if (int !== count) {
- throw new Error("bytes: repeat count must be an integer");
- }
-
- const nb = new Uint8Array(origin.length * count);
-
- let bp = copy(origin, nb);
-
- for (; bp < nb.length; bp *= 2) {
- copy(nb.slice(0, bp), nb, bp);
- }
-
- return nb;
-}
-
-/** Concatenate multiple binary arrays and return new one.
- * @param buf binary arrays to concatenate
- */
-export function concat(...buf: Uint8Array[]): Uint8Array {
- let length = 0;
- for (const b of buf) {
- length += b.length;
- }
-
- const output = new Uint8Array(length);
- let index = 0;
- for (const b of buf) {
- output.set(b, index);
- index += b.length;
- }
-
- return output;
-}
-
-/** Check source array contains pattern array.
- * @param source source array
- * @param pat patter array
- */
-export function contains(source: Uint8Array, pat: Uint8Array): boolean {
- return indexOf(source, pat) != -1;
-}
-
-/**
- * Copy bytes from one Uint8Array to another. Bytes from `src` which don't fit
- * into `dst` will not be copied.
- *
- * @param src Source byte array
- * @param dst Destination byte array
- * @param off Offset into `dst` at which to begin writing values from `src`.
- * @return number of bytes copied
- */
-export function copy(src: Uint8Array, dst: Uint8Array, off = 0): number {
- off = Math.max(0, Math.min(off, dst.byteLength));
- const dstBytesAvailable = dst.byteLength - off;
- if (src.byteLength > dstBytesAvailable) {
- src = src.subarray(0, dstBytesAvailable);
- }
- dst.set(src, off);
- return src.byteLength;
-}