mu/mu/mu.cc

/*
** Copyright (C) 2008-2021 Dirk-Jan C. Binnema <djcb@djcbsoftware.nl>
**
** This program is free software; you can redistribute it and/or modify it
** under the terms of the GNU General Public License as published by the
** Free Software Foundation; either version 3, or (at your option) any
** later version.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software Foundation,
** Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
**
*/

#include <config.h>

#include <glib.h>
#include <glib-object.h>
#include <locale.h>

#include "mu-config.hh"
#include "mu-cmd.hh"
#include "mu-runtime.hh"
#include "utils/mu-utils.hh"

using namespace Mu;

static void
show_version(void)
{
	const char* blurb = "mu (mail indexer/searcher) version " VERSION "\n"
			    "Copyright (C) 2008-2021 Dirk-Jan C. Binnema\n"
			    "License GPLv3+: GNU GPL version 3 or later "
			    "<http://gnu.org/licenses/gpl.html>.\n"
			    "This is free software: you are free to change "
			    "and redistribute it.\n"
			    "There is NO WARRANTY, to the extent permitted by law.";

	g_print("%s\n", blurb);
}

static void
handle_error(MuConfig* conf, MuError merr, GError** err)
{
	if (!(err && *err))
		return;

	using Color = MaybeAnsi::Color;
	MaybeAnsi col{conf ? !conf->nocolor : false};

	if (*err)
		std::cerr << col.fg(Color::Red) << "error" << col.reset() << ": "
			  << col.fg(Color::BrightYellow)
			  << ((*err) ? (*err)->message : "something when wrong") << "\n";

	std::cerr << col.fg(Color::Green);

	switch ((*err)->code) {
	case MU_ERROR_XAPIAN_CANNOT_GET_WRITELOCK:
		std::cerr << "Maybe mu is already running?\n";
		break;

	case MU_ERROR_XAPIAN_NEEDS_REINDEX:
		std::cerr << "Database needs (re)indexing.\n"
			  << "try 'mu index' "
			  << "(see mu-index(1) for details)\n";
		return;
	case MU_ERROR_IN_PARAMETERS:
		if (conf && mu_config_cmd_is_valid(conf->cmd))
			mu_config_show_help(conf->cmd);
		break;
	case MU_ERROR_SCRIPT_NOT_FOUND:
		std::cerr << "See the mu manpage for commands, or "
			  << "'mu script' for the scripts\n";
		break;
	case MU_ERROR_XAPIAN_CANNOT_OPEN:
		std::cerr << "Please (re)initialize mu with 'mu init' "
			  << "see mu-init(1) for details\n";
		return;
	case MU_ERROR_XAPIAN_SCHEMA_MISMATCH:
		std::cerr << "Please (re)initialize mu with 'mu init' "
			  << "see mu-init(1) for details\n";
		return;
	default: break; /* nothing to do */
	}

	std::cerr << col.reset();
}

int
main(int argc, char* argv[])
{
	GError*   err;
	MuError   rv;
	MuConfig* conf;

	setlocale(LC_ALL, "");

	err = NULL;
	rv  = MU_OK;

	conf = mu_config_init(&argc, &argv, &err);
	if (!conf) {
		rv = err ? (MuError)err->code : MU_ERROR;
		goto cleanup;
	} else if (conf->version) {
		show_version();
		goto cleanup;
	}

	/* nothing to do */
	if (conf->cmd == MU_CONFIG_CMD_NONE)
		return 0;

	if (!mu_runtime_init(conf->muhome, PACKAGE_NAME, conf->debug)) {
		mu_config_uninit(conf);
		return 1;
	}

	rv = mu_cmd_execute(conf, &err);

cleanup:
	handle_error(conf, rv, &err);
	g_clear_error(&err);

	mu_config_uninit(conf);
	mu_runtime_uninit();

	return rv;
}