repl-mcp/build/iterm-marker-detector.js

Universal REPL session manager MCP server

export class ITermMarkerDetector {
    static MARKERS = {
        // iTerm2 Shell Integration markers
        SHELL_INTEGRATION: /\x1b\]1337;ShellIntegrationVersion=(\d+)(?:;shell=([a-z]+))?\x07/,
        PROMPT_START: /\x1b\]133;A\x07/,
        COMMAND_START: /\x1b\]133;B\x07/,
        EXECUTION_START: /\x1b\]133;C\x07/,
        COMMAND_END: /\x1b\]133;D;(\d+)\x07/,
        CURRENT_DIR: /\x1b\]1337;CurrentDir=([^\x07]+)\x07/,
        REMOTE_HOST: /\x1b\]1337;RemoteHost=([^\x07]+)\x07/,
        USER_VAR: /\x1b\]1337;SetUserVar=([^=]+)=([^\x07]+)\x07/,
        PROMPT_PREFIX: /\x1b\]133;D;(\d+)\x07/,
    };
    static detectMarkers(rawOutput) {
        const markers = {
            hasIntegration: false,
            promptStart: false,
            commandEnd: false,
            exitCode: null,
            currentDir: null
        };
        // Check for shell integration
        if (this.MARKERS.SHELL_INTEGRATION.test(rawOutput)) {
            markers.hasIntegration = true;
        }
        // Check for prompt start
        if (this.MARKERS.PROMPT_START.test(rawOutput)) {
            markers.promptStart = true;
        }
        // Check for command completion with exit code
        const commandEndMatch = rawOutput.match(this.MARKERS.COMMAND_END);
        if (commandEndMatch) {
            markers.commandEnd = true;
            markers.exitCode = parseInt(commandEndMatch[1]);
        }
        // Check for current directory
        const currentDirMatch = rawOutput.match(this.MARKERS.CURRENT_DIR);
        if (currentDirMatch) {
            markers.currentDir = decodeURIComponent(currentDirMatch[1]);
        }
        return markers;
    }
    static hasCommandCompletion(rawOutput) {
        return this.MARKERS.COMMAND_END.test(rawOutput);
    }
    static getExitCode(rawOutput) {
        const match = rawOutput.match(this.MARKERS.COMMAND_END);
        return match ? parseInt(match[1]) : null;
    }
    static logDetectedMarkers(rawOutput, sessionId, logger) {
        if (!logger)
            return;
        const markers = this.detectMarkers(rawOutput);
        if (markers.hasIntegration) {
            logger(`[DEBUG ${sessionId}] iTerm2 shell integration detected`, sessionId);
        }
        if (markers.promptStart) {
            logger(`[DEBUG ${sessionId}] iTerm2 prompt start marker detected`, sessionId);
        }
        if (markers.commandEnd) {
            logger(`[DEBUG ${sessionId}] iTerm2 command completion detected (exit code: ${markers.exitCode})`, sessionId);
        }
        if (markers.currentDir) {
            logger(`[DEBUG ${sessionId}] iTerm2 current directory: ${markers.currentDir}`, sessionId);
        }
        // Check for additional markers
        if (this.MARKERS.REMOTE_HOST.test(rawOutput)) {
            const match = rawOutput.match(this.MARKERS.REMOTE_HOST);
            if (match) {
                logger(`[DEBUG ${sessionId}] iTerm2 remote host detected: ${match[1]}`, sessionId);
            }
        }
        if (this.MARKERS.USER_VAR.test(rawOutput)) {
            const match = rawOutput.match(this.MARKERS.USER_VAR);
            if (match) {
                logger(`[DEBUG ${sessionId}] iTerm2 user variable: ${match[1]}=${match[2]}`, sessionId);
            }
        }
    }
}
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