#!/usr/bin/env narwhal

var FILE = require("file");
var SYSTEM = require("system");
var OS = require("os");
var OBJJ = require("objective-j");

var parser = new (require("args").Parser)();

parser.usage("file...");
parser.help("Cappuccino plist converter.");

parser.option("-c", "--convert", "format")
    .help("rewrite property list files in format")
    .choices({
        "280north1" : OBJJ.kCFPropertyList280NorthFormat_v1_0,
        "xml1": OBJJ.kCFPropertyListXMLFormat_v1_0
    });

parser.option("-l", "--lint", "lint")
    .help("check the property list files for syntax errors")
    .set(true);

parser.option("-h", "--help")
    .action(parser.printHelp);

parser.option("-o", "outPath")
    .help("specify alternate file path name for result;\n\
the -o option is used with -convert, and is only\n\
useful with one file argument (last file overwrites);\n\
the path '-' means stdout.")
    .set();

parser.option("-e", "outExtension")
    .help("specify alternate extension for converted files")
    .set();

parser.option("-s", "silent")
    .help("be silent on success")
    .set(true);

exports.main = function(args)
{
    // HACK: add extra "-" to "-convert", etc, for plutil compatibility
    var args = args.map(function(arg) { return arg.replace(/^(-[^-].+)$/, "-$1"); });
    var options = parser.parse(args);

    var ok = false;

    if (typeof options.format !== "undefined" || options.lint)
    {
        ok = true;
        options.args.forEach(function(filePath) {
            var data = new OBJJ.objj_data();
            data.string = FILE.read(filePath, { charset:"UTF-8" });

            var plistObject = OBJJ.CPPropertyListCreateFromData(data);
            if (!plistObject)
            {
                // FIXME: more useful error messages
                SYSTEM.stderr.print(filePath + ": parse error");
                ok = false;
                return;
            }

            if (options.lint)
            {
                if (!options.silent)
                    SYSTEM.stderr.print(filePath + ": OK");
            }
            else
            {
                data = OBJJ.CPPropertyListCreateData(plistObject, options.format);

                // outextension?
                if (options.outPath === "-")
                    SYSTEM.stdout.write(data.string);
                else
                    FILE.write(options.outPath || filePath, data.string, { charset:"UTF-8" });
            }
        });
    }
    else
    {
        parser.printHelp(options);
    }

    OS.exit(ok ? 0 : 1);
}

if (require.main == module.id)
    exports.main(system.args);