@struktoai/mirage-core/dist/commands/builtin/generic/column.js

A Unified Virtual Filesystem For AI Agents

// ========= Copyright 2026 @ Strukto.AI All Rights Reserved. =========
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// ========= Copyright 2026 @ Strukto.AI All Rights Reserved. =========
import { specOf } from "../../spec/builtins.js";
import { FlagView } from "../../spec/flag_view.js";
import { IOResult } from "../../../io/types.js";
import { byteView } from "../../../shell/bytes.js";
import { chainOutput, closeStream, openStream } from "../../../rs/stream.js";
function parseFlags(bag) {
    const fl = new FlagView(bag, specOf('column'));
    return {
        table: fl.asBool('t'),
        separator: fl.asStr('s') ?? null,
        outputSeparator: fl.asStr('o', '  '),
    };
}
async function* columned(config, sources, signal) {
    const stream = await openStream('column', config);
    try {
        yield* chainOutput(stream, sources, signal);
    }
    finally {
        await closeStream(stream);
    }
}
// util-linux column over every operand, or stdin without one. Mirrors
// Python's column_generic.
export function columnGeneric(paths, ctx, stream) {
    const parsed = parseFlags(ctx.flags);
    const sources = [];
    for (const path of paths)
        sources.push(stream(path));
    const config = {
        table: parsed.table,
        separator: parsed.separator === null ? null : byteView(parsed.separator),
        output_separator: byteView(parsed.outputSeparator),
        columns: ctx.env?.COLUMNS ?? null,
        inputs: Math.max(1, sources.length),
    };
    if (sources.length === 0)
        sources.push(ctx.stdin ?? new Uint8Array());
    return Promise.resolve([columned(config, sources, ctx.signal), new IOResult()]);
}
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