image-in-browser/lib/exif/ifd-value/ifd-ascii-value.js

Package for encoding / decoding images, transforming images, applying filters, drawing primitives on images on the client side (no need for server Node.js)

import { StringUtils } from '../../common/string-utils.js';
import { IfdValue } from './ifd-value.js';
import { IfdValueType } from '../ifd-value-type.js';
export class IfdAsciiValue extends IfdValue {
    get type() {
        return IfdValueType.ascii;
    }
    get length() {
        const codeUnits = StringUtils.getCodePoints(this._value);
        return codeUnits.length + 1;
    }
    constructor(value) {
        super();
        if (typeof value === 'string') {
            this._value = value;
        }
        else {
            this._value = String.fromCodePoint(...value);
        }
    }
    static data(data, length) {
        const value = length > 0 ? data.readString(length - 1) : '';
        return new IfdAsciiValue(value);
    }
    toData() {
        return StringUtils.getCodePoints(this._value);
    }
    write(out) {
        const bytes = StringUtils.getCodePoints(this._value);
        out.writeBytes(bytes);
        out.writeByte(0);
    }
    setString(v) {
        this._value = v;
    }
    equals(other) {
        return (other instanceof IfdAsciiValue &&
            this.length === other.length &&
            this._value === this._value);
    }
    clone() {
        return new IfdAsciiValue(this._value);
    }
    toString() {
        return `${this.constructor.name} (${this._value})`;
    }
}
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