@keymanapp/kmc/build/src/util/fileLists.js

Keyman Developer compiler command line tools

import * as fs from 'fs';
import * as path from 'path';
import { InfrastructureMessages } from "../messages/infrastructureMessages.js";
/**
 * Replaces each entry starting with `@` with the content of the file, with one
 * line per file, filenames trimmed, and any lines that are blank or starting
 * with `#` (marking a comment) removed. Note: `#` anywhere else is treated as
 * part of the filename.
 *
 * If any filelist does not exist, reports an error and returns false.
 *
 * @param filenames
 * @param callbacks
 * @returns false on failure
 */
export function expandFileLists(filenames, callbacks) {
    let i = 0;
    while (i < filenames.length) {
        if (filenames[i].startsWith('@')) {
            const fileList = expandFileList(filenames[i].substring(1), callbacks);
            if (fileList === null) {
                return false;
            }
            filenames.splice(i, 1, ...fileList);
            i += fileList.length;
        }
        else {
            i++;
        }
    }
    return true;
}
export function expandFileList(filename, callbacks) {
    if (!fs.existsSync(filename)) {
        callbacks.reportMessage(InfrastructureMessages.Error_FileDoesNotExist({ filename }));
        return null;
    }
    const files = fs.readFileSync(filename, 'utf-8').split('\n').map(item => {
        item = item.trim();
        return item.startsWith('#') || item == ''
            ? ''
            : path.resolve(path.dirname(filename), item);
    }).filter(item => item.length > 0);
    return files;
}
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