lib/formatters/clang-format.ts

// Copyright (c) 2021, Compiler Explorer Authors
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import {UnprocessedExecResult} from '../../types/execution/execution.interfaces';
import * as exec from '../exec';

import {BaseFormatter} from './base';
import {FormatOptions} from './base.interfaces';

export class ClangFormatFormatter extends BaseFormatter {
    static get key() {
        return 'clangformat';
    }

    override async format(source: string, options: FormatOptions): Promise<UnprocessedExecResult> {
        const tabText = options.useSpaces ? 'Never' : 'AlignWithSpaces';
        const arg = `{BasedOnStyle: ${options.baseStyle}, IndentWidth: ${options.tabWidth}, UseTab: ${tabText}}`;
        const result = await exec.execute(this.formatterInfo.exe, [`--style=${arg}`], {input: source});
        if (result.code === 0) {
            // Repair http(s) includes, i.e., remove the spaces inserted before the hier-part of the URI
            const includeFind = /^(\s*#\s*include\s*["<]https?:)\s+(\/\/[^">]+[">].*)/;
            const includeReplacement = '$1$2';
            const lines = result.stdout.split('\n');
            for (const idx in lines) lines[idx] = lines[idx].replace(includeFind, includeReplacement);
            result.stdout = lines.join('\n');
        }
        return result;
    }
}