/*
 * Copyright 2005-2019, Haiku, Inc. All rights reserved.
 * Copyright 2005, Ingo Weinhold, <bonefish@users.sf.net>
 *
 * Distributed under the terms of the MIT License.
 *
 * Authors:
 *	Jeremiah Bailey, <jjbailey@gmail.com>
 *	Ingo Weinhold, <bonefish@users.sf.net>
 */


#include "Arguments.h"

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include <Catalog.h>
#include <Locale.h>


#undef B_TRANSLATION_CONTEXT
#define B_TRANSLATION_CONTEXT "Terminal arguments parsing"


Arguments::Arguments(int defaultArgsNum, const char* const* defaultArgs)
	: fUsageRequested(false),
	  fBounds(50, 50, 630, 435),
	  fStandardShell(true),
	  fFullScreen(false),
	  fShellArgumentCount(0),
	  fShellArguments(NULL),
	  fTitle(NULL),
	  fWorkingDirectory(NULL)
{
	_SetShellArguments(defaultArgsNum, defaultArgs);
}


Arguments::~Arguments()
{
	_SetShellArguments(0, NULL);
}


void
Arguments::Parse(int argc, const char* const* argv)
{
	int argi;
	for (argi = 1; argi < argc; argi ++) {
		const char* arg = argv[argi];

		if (*arg == '-') {
			if (strcmp(arg, "-h") == 0 || strcmp(arg, "--help") == 0)
				fUsageRequested = true;
			else if (strcmp(arg, "-t") == 0 || strcmp(arg, "--title") == 0) {
				// title
				if (argi >= argc)
					fUsageRequested = true;
				else
					fTitle = argv[++argi];
			} else if (strcmp(arg, "-w") == 0
					|| strcmp(arg, "--working-directory") == 0) {
				if (argi >= argc)
					fUsageRequested = true;
				else
					fWorkingDirectory = argv[++argi];
			} else if (strcmp(arg, "-f") == 0
					|| strcmp(arg, "--fullscreen") == 0)
				fFullScreen = true;
			else {
				// illegal option
				fprintf(stderr, B_TRANSLATE("Unrecognized option \"%s\"\n"),
					arg);
				fUsageRequested = true;
			}
		} else {
			// no option, so the remainder is the shell program with arguments
			_SetShellArguments(argc - argi, argv + argi);
			argi = argc;
			fStandardShell = false;
		}
	}
}


void
Arguments::GetShellArguments(int& argc, const char* const*& argv) const
{
	argc = fShellArgumentCount;
	argv = fShellArguments;
}


void
Arguments::_SetShellArguments(int argc, const char* const* argv)
{
	// delete old arguments
	for (int32 i = 0; i < fShellArgumentCount; i++)
		free((void *)fShellArguments[i]);
	delete[] fShellArguments;

	fShellArguments = NULL;
	fShellArgumentCount = 0;

	// copy new ones
	if (argc > 0 && argv) {
		fShellArguments = new const char*[argc + 1];
		for (int i = 0; i < argc; i++)
			fShellArguments[i] = strdup(argv[i]);

		fShellArguments[argc] = NULL;
		fShellArgumentCount = argc;
	}
}