Function parseColorSchemeConfig

src/utils/colorscheme-parser.ts:53–235

(config: string)

}

export function parseColorSchemeConfig(config: string): { result: ParsedColorSchemeConfig; error: string | null } {
    // Let's first get all "possible" sections of the text.
    // We're adding `\n` so the sections "first" word is the
    // name of the color scheme. We could remove this and
    // skip this in the process of parsing, but because
    // the first entry will not have this first '\n' it will
    // be more complicated to otherwise just add this '\n' here.
    const sections = config.split(`${SEPERATOR }\n\n`);

    const definedColorSchemeNames: Set<string> = new Set();
    let lastDefinedColorSchemeName: string | undefined = '';

    const definedColorSchemes: ParsedColorSchemeConfig = {
        light: {},
        dark: {},
    };

    // Define the interrupt and error variables.
    // Interrupt is to indicate that the parsing should stop.
    // But because we cannot break out of a forEach loop,
    // we need to use an interrupt variable.
    // The error is to indicate that there was an error.
    // And also the reason why the parsing failed.
    // It will be the first error that is found.
    let interrupt = false;
    let error: string | null = null;

    const throwError = (message: string) => {
        if (!interrupt) {
            interrupt = true;
            error = message;
        }
    };

    // Now we will iterate troughout each section.
    // We will always assume bad-faith and make sure to have
    // guards in place. As this could also be bad code.
    // We shouldn't rely on that the input is correct.
    sections.forEach((section) => {
        // Check if the interrupt variable is set.
        // If it is, we should stop parsing.
        if (interrupt) {
            return;
        }

        // First we split the section into lines.
        const lines = section.split('\n');

        // We have to make sure that the first line is a valid color scheme name.
        // We will also make sure that the name is not already defined.
        const name = lines[0];
        if (!name) {
            throwError('No color scheme name was found.');
            return;
        }
        if (definedColorSchemeNames.has(name)) {
            throwError(`The color scheme name "${name}" is already defined.`);
            return;