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import { BaseBlock, BaseBlockJson, BaseBlockParams } from "./BaseBlock";
import { Constructed } from "./Constructed";
import { BIT_STRING_NAME } from "./internals/constants";
import { LocalBitStringValueBlockParams, LocalBitStringValueBlock, LocalBitStringValueBlockJson } from "./internals/LocalBitStringValueBlock";
import { typeStore } from "./TypeStore";
export interface BitStringParams extends BaseBlockParams, LocalBitStringValueBlockParams { }
export type BitStringJson = BaseBlockJson<LocalBitStringValueBlockJson>;
export class BitString extends BaseBlock<LocalBitStringValueBlock, LocalBitStringValueBlockJson> {
static {
typeStore.BitString = this;
}
public static override NAME = BIT_STRING_NAME;
constructor({
idBlock = {},
lenBlock = {},
...parameters
}: BitStringParams = {}) {
parameters.isConstructed ??= !!parameters.value?.length;
super({
idBlock: {
isConstructed: parameters.isConstructed,
...idBlock,
},
lenBlock: {
...lenBlock,
isIndefiniteForm: !!parameters.isIndefiniteForm,
},
...parameters,
}, LocalBitStringValueBlock);
this.idBlock.tagClass = 1; // UNIVERSAL
this.idBlock.tagNumber = 3; // BitString
}
public override fromBER(inputBuffer: ArrayBuffer | Uint8Array, inputOffset: number, inputLength: number): number {
this.valueBlock.isConstructed = this.idBlock.isConstructed;
this.valueBlock.isIndefiniteForm = this.lenBlock.isIndefiniteForm;
return super.fromBER(inputBuffer, inputOffset, inputLength);
}
protected override onAsciiEncoding(): string {
if (this.valueBlock.isConstructed || (this.valueBlock.value && this.valueBlock.value.length)) {
return Constructed.prototype.onAsciiEncoding.call(this);
} else {
// convert bytes to bits
const bits = [];
const valueHex = this.valueBlock.valueHexView;
for (const byte of valueHex) {
bits.push(byte.toString(2).padStart(8, "0"));
}
const bitsStr = bits.join("");
return `${(this.constructor as typeof BitString).NAME} : ${bitsStr.substring(0, bitsStr.length - this.valueBlock.unusedBits)}`;
}
}
}
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