/*
 * Copyright (C) 2012-2015 Robin Haberkorn
 *
 * 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 of the License, 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, see <http://www.gnu.org/licenses/>.
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

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

#include <glib.h>
#include <glib/gprintf.h>
#include <glib/gstdio.h>

#include "sciteco.h"
#include "cmdline.h"
#include "interface.h"
#include "ioview.h"
#include "parser.h"
#include "goto.h"
#include "qregisters.h"
#include "ring.h"
#include "undo.h"
#include "error.h"

/*
 * Define this to pause the program at the beginning
 * of main() (Windows only).
 * This is a useful hack on Windows, where gdbserver
 * sometimes refuses to start SciTECO but attaches
 * to a running process just fine.
 */
//#define DEBUG_PAUSE

namespace SciTECO {

#define INI_FILE ".teco_ini"

/*
 * defining the global objects here ensures
 * a ctor/dtor order without depending on the
 * GCC init_priority() attribute
 */
InterfaceCurrent interface;
IOView QRegisters::view;

/*
 * Scintilla will be initialized after these
 * ctors (in main()), but dtors are guaranteed
 * to be executed before Scintilla's
 * destruction
 */
QRegisterTable QRegisters::globals;
Ring ring;

namespace Flags {
	tecoInt ed = ED_AUTOEOL;
}

static gchar *eval_macro = NULL;
static gchar *mung_file = NULL;
static gboolean mung_profile = TRUE;

sig_atomic_t sigint_occurred = FALSE;

extern "C" {
static gpointer g_malloc_exception(gsize n_bytes);
static gpointer g_calloc_exception(gsize n_blocks, gsize n_block_bytes);
static gpointer g_realloc_exception(gpointer mem, gsize n_bytes);

static void sigint_handler(int signal);
}

#if defined(G_OS_UNIX) || defined(G_OS_HAIKU)

void
interrupt(void)
{
	/*
	 * This sends SIGINT to the entire process group,
	 * which makes sure that subprocesses are signalled,
	 * even when called from the wrong thread.
	 */
	if (kill(0, SIGINT))
		sigint_occurred = TRUE;
}

#else /* !G_OS_UNIX && !G_OS_HAIKU */

void
interrupt(void)
{
	if (raise(SIGINT))
		sigint_occurred = TRUE;
}

#endif

const gchar *
get_eol_seq(gint eol_mode)
{
	switch (eol_mode) {
	case SC_EOL_CRLF:
		return "\r\n";
	case SC_EOL_CR:
		return "\r";
	case SC_EOL_LF:
	default:
		return "\n";
	}
}

#ifdef G_OS_WIN32

/*
 * Keep program self-contained under Windows
 * Look for config files (profile and session),
 * as well as standard library macros in the
 * program's directory.
 */
static inline gchar *
get_default_config_path(const gchar *program)
{
	return g_path_get_dirname(program);
}

#elif defined(G_OS_UNIX)

/*
 * NOTE: We explicitly do not handle
 * Haiku like UNIX here, since it appears to
 * be uncommon on Haiku to clutter the HOME directory
 * with config files.
 */
static inline gchar *
get_default_config_path(const gchar *program)
{
	return g_strdup(g_getenv("HOME"));
}

#else

static inline gchar *
get_default_config_path(const gchar *program)
{
	return g_strdup(g_get_user_config_dir());
}

#endif

static inline void
process_options(int &argc, char **&argv)
{
	static const GOptionEntry option_entries[] = {
		{"eval", 'e', 0, G_OPTION_ARG_STRING, &eval_macro,
		 "Evaluate macro", "macro"},
		{"mung", 'm', 0, G_OPTION_ARG_FILENAME, &mung_file,
		 "Mung file instead of "
		 "$SCITECOCONFIG" G_DIR_SEPARATOR_S INI_FILE, "file"},
		{"no-profile", 0, G_OPTION_FLAG_REVERSE,
		 G_OPTION_ARG_NONE, &mung_profile,
		 "Do not mung "
		 "$SCITECOCONFIG" G_DIR_SEPARATOR_S INI_FILE
		 " even if it exists"},
		{NULL}
	};

	GError *gerror = NULL;

	GOptionContext	*options;
	GOptionGroup	*interface_group = interface.get_options();

	options = g_option_context_new("[--] [ARGUMENT...]");

	g_option_context_set_summary(
		options,
		PACKAGE_STRING " -- Scintilla-based Text Editor and COrrector"
	);
	g_option_context_set_description(
		options,
		"Bug reports should go to <" PACKAGE_BUGREPORT "> or "
		"<" PACKAGE_URL_DEV ">."
	);

	g_option_context_add_main_entries(options, option_entries, NULL);
	if (interface_group)
		g_option_context_add_group(options, interface_group);

	if (!g_option_context_parse(options, &argc, &argv, &gerror)) {
		g_fprintf(stderr, "Option parsing failed: %s\n",
			  gerror->message);
		g_error_free(gerror);
		exit(EXIT_FAILURE);
	}

	g_option_context_free(options);

	if (mung_file) {
		if (!g_file_test(mung_file, G_FILE_TEST_IS_REGULAR)) {
			g_fprintf(stderr, "Cannot mung \"%s\". File does not exist!\n",
				  mung_file);
			exit(EXIT_FAILURE);
		}
	}

	/* remaining arguments, are arguments to the interface */
}

static inline void
initialize_environment(const gchar *program)
{
	gchar *default_configpath, *abs_path;

	/*
	 * Initialize some "special" environment variables.
	 * For ease of use and because there are no threads yet,
	 * we modify the process environment directly.
	 * Later it is imported into the global Q-Register table
	 * and the process environment should no longer be accessed
	 * directly.
	 *
	 * Initialize and canonicalize $HOME.
	 * Therefore we can refer to $HOME as the
	 * current user's home directory on any platform
	 * and it can be re-configured even though g_get_home_dir()
	 * evaluates $HOME only beginning with glib v2.36.
	 */
	g_setenv("HOME", g_get_home_dir(), FALSE);
	abs_path = get_absolute_path(g_getenv("HOME"));
	g_setenv("HOME", abs_path, TRUE);
	g_free(abs_path);

	/*
	 * Initialize $SCITECOCONFIG and $SCITECOPATH
	 */
	default_configpath = get_default_config_path(program);
	g_setenv("SCITECOCONFIG", default_configpath, FALSE);
#ifdef G_OS_WIN32
	gchar *default_scitecopath;
	default_scitecopath = g_build_filename(default_configpath, "lib", NIL);
	g_setenv("SCITECOPATH", default_scitecopath, FALSE);
	g_free(default_scitecopath);
#else
	g_setenv("SCITECOPATH", SCITECOLIBDIR, FALSE);
#endif
	g_free(default_configpath);

	/*
	 * $SCITECOCONFIG and $SCITECOPATH may still be relative.
	 * They are canonicalized, so macros can use them even
	 * if the current working directory changes.
	 */
	abs_path = get_absolute_path(g_getenv("SCITECOCONFIG"));
	g_setenv("SCITECOCONFIG", abs_path, TRUE);
	g_free(abs_path);
	abs_path = get_absolute_path(g_getenv("SCITECOPATH"));
	g_setenv("SCITECOPATH", abs_path, TRUE);
	g_free(abs_path);

	/*
	 * Import process environment into global Q-Register
	 * table. While it is safe to use g_setenv() early
	 * on at startup, it might be problematic later on
	 * (e.g. it's non-thread-safe).
	 * Therefore the environment registers in the global
	 * table should be used from now on to set and get
	 * environment variables.
	 * When spawning external processes that should inherit
	 * the environment variables, the environment should
	 * be exported via QRegisters::globals.get_environ().
	 */
	QRegisters::globals.set_environ();
}

/*
 * Callbacks
 */

class g_bad_alloc : public std::bad_alloc {
public:
	const char *
	what() const throw()
	{
		return "glib allocation";
	}
};

static gpointer
g_malloc_exception(gsize n_bytes)
{
	gpointer p = malloc(n_bytes);

	if (!p)
		throw g_bad_alloc();
	return p;
}

static gpointer
g_calloc_exception(gsize n_blocks, gsize n_block_bytes)
{
	gpointer p = calloc(n_blocks, n_block_bytes);

	if (!p)
		throw g_bad_alloc();
	return p;
}

static gpointer
g_realloc_exception(gpointer mem, gsize n_bytes)
{
	gpointer p = realloc(mem, n_bytes);

	if (!p)
		throw g_bad_alloc();
	return p;
}

static void
sigint_handler(int signal)
{
	sigint_occurred = TRUE;
}

} /* namespace SciTECO */

/*
 * main() must be defined in the root
 * namespace, so we import the "SciTECO"
 * namespace. We have no more declarations
 * to make in the "SciTECO" namespace.
 */
using namespace SciTECO;HTTP/1.1 200 OK
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Date: Thu, 23 Oct 2025 05:33:20 UTC
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Expires: Sun, 21 Oct 2035 05:33:19 GMT
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Expires: Sun, 21 Oct 2035 05:33:20 GMT
Last-Modified: Thu, 23 Oct 2025 05:33:19 GMT
Last-Modified: Thu, 23 Oct 2025 05:33:20 GMT
Last-Modified: Thu, 23 Oct 2025 05:33:20 GMT
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/*
 * Copyright (C) 2012-2015 Robin Haberkorn
 *
 * 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 of the License, 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, see <http://www.gnu.org/licenses/>.
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

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

#include <glib.h>
#include <glib/gprintf.h>
#include <glib/gstdio.h>

#include "sciteco.h"
#include "cmdline.h"
#include "interface.h"
#include "ioview.h"
#include "parser.h"
#include "goto.h"
#include "qregisters.h"
#include "ring.h"
#include "undo.h"
#include "error.h"

/*
 * Define this to pause the program at the beginning
 * of main() (Windows only).
 * This is a useful hack on Windows, where gdbserver
 * sometimes refuses to start SciTECO but attaches
 * to a running process just fine.
 */
//#define DEBUG_PAUSE

namespace SciTECO {

#define INI_FILE ".teco_ini"

/*
 * defining the global objects here ensures
 * a ctor/dtor order without depending on the
 * GCC init_priority() attribute
 */
InterfaceCurrent interface;
IOView QRegisters::view;

/*
 * Scintilla will be initialized after these
 * ctors (in main()), but dtors are guaranteed
 * to be executed before Scintilla's
 * destruction
 */
QRegisterTable QRegisters::globals;
Ring ring;

namespace Flags {
	tecoInt ed = ED_AUTOEOL;
}

static gchar *eval_macro = NULL;
static gchar *mung_file = NULL;
static gboolean mung_profile = TRUE;

sig_atomic_t sigint_occurred = FALSE;

extern "C" {
static gpointer g_malloc_exception(gsize n_bytes);
static gpointer g_call