OpenHands/openhands/runtime/utils/bash.py

import bashlex

from openhands.core.logger import openhands_logger as logger


def split_bash_commands(commands):
    if not commands.strip():
        return ['']
    try:
        parsed = bashlex.parse(commands)
    except bashlex.errors.ParsingError as e:
        logger.debug(
            f'Failed to parse bash commands\n'
            f'[input]: {commands}\n'
            f'[warning]: {e}\n'
            f'The original command will be returned as is.'
        )
        # If parsing fails, return the original commands
        return [commands]

    result: list[str] = []
    last_end = 0

    for node in parsed:
        start, end = node.pos

        # Include any text between the last command and this one
        if start > last_end:
            between = commands[last_end:start]
            logger.debug(f'BASH PARSING between: {between}')
            if result:
                result[-1] += between.rstrip()
            elif between.strip():
                # THIS SHOULD NOT HAPPEN
                result.append(between.rstrip())

        # Extract the command, preserving original formatting
        command = commands[start:end].rstrip()
        logger.debug(f'BASH PARSING command: {command}')
        result.append(command)

        last_end = end

    # Add any remaining text after the last command to the last command
    remaining = commands[last_end:].rstrip()
    logger.debug(f'BASH PARSING remaining: {remaining}')
    if last_end < len(commands) and result:
        result[-1] += remaining
        logger.debug(f'BASH PARSING result[-1] += remaining: {result[-1]}')
    elif last_end < len(commands):
        if remaining:
            result.append(remaining)
            logger.debug(f'BASH PARSING result.append(remaining): {result[-1]}')
    return result