/*
Copyright (C) 1996-2001 Id Software, Inc.
Copyright (C) 2002-2009 John Fitzgibbons and others
Copyright (C) 2010-2014 QuakeSpasm developers

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 2
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, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

*/
// console.c

#include "quakedef.h"

#include <sys/types.h>
#include <time.h>
#include <sys/stat.h>
#include <fcntl.h>
#ifdef _WIN32
#include <io.h>
#else
#include <unistd.h>
#endif

int con_linewidth;

float con_cursorspeed = 4;

#define CON_TEXTSIZE (1024 * 1024) // ericw -- was 65536. johnfitz -- new default size
#define CON_MINSIZE	 16384		   // johnfitz -- old default, now the minimum size

int con_buffersize; // johnfitz -- user can now override default

qboolean con_forcedup; // because no entities to refresh

int	  con_totallines; // total lines in console scrollback
int	  con_backscroll; // lines up from bottom to display
int	  con_current;	  // where next message will be printed
int	  con_x;		  // offset in current line for next print
char *con_text = NULL;

cvar_t con_notifytime = {"con_notifytime", "3", CVAR_NONE};			// seconds
cvar_t con_logcenterprint = {"con_logcenterprint", "1", CVAR_NONE}; // johnfitz

char con_lastcenterstring[1024];				 // johnfitz
void (*con_redirect_flush) (const char *buffer); // call this to flush the redirection buffer (for rcon)
char con_redirect_buffer[8192];

#define NUM_CON_TIMES 4
float con_times[NUM_CON_TIMES]; // realtime time the line was generated
								// for transparent notify lines

int con_vislines;

qboolean con_debuglog = false;

qboolean con_initialized;

SDL_Mutex *con_mutex;

/*
================
Con_Quakebar -- johnfitz -- returns a bar of the desired length, but never wider than the console

includes a newline, unless len >= con_linewidth.
================
*/
const char *Con_Quakebar (int len)
{
	static char bar[42];
	int			i;

	len = q_min (len, (int)sizeof (bar) - 2);
	len = q_min (len, con_linewidth);

	bar[0] = '\35';
	for (i = 1; i < len - 1; i++)
		bar[i] = '\36';
	bar[len - 1] = '\37';

	if (len < con_linewidth)
	{
		bar[len] = '\n';
		bar[len + 1] = 0;
	}
	else
		bar[len] = 0;

	return bar;
}

/*
================
Con_ToggleConsole_f
================
*/
extern int history_line; // johnfitz

void Con_ToggleConsole_f (void)
{
	if (key_dest == key_console /* || (key_dest == key_game && con_forcedup)*/)
	{
		key_lines[edit_line][1] = 0; // clear any typing
		key_linepos = 1;
		con_backscroll = 0;		  // johnfitz -- toggleconsole should return you to the bottom of the scrollback
		history_line = edit_line; // johnfitz -- it should also return you to the bottom of the command history

		if (cls.state == ca_connected)
		{
			IN_Activate ();
			key_dest = key_game;
		}
		else
		{
			M_Menu_Main_f ();
		}
	}
	else
	{
		IN_Deactivate (modestate == MS_WINDOWED);
		key_dest = key_console;
	}

	SCR_EndLoadingPlaque ();
	memset (con_times, 0, sizeof (con_times));
}

/*
================
Con_Clear_f
================
*/
static void Con_Clear_f (void)
{
	if (con_text)
		memset (con_text, ' ', con_buffersize); // johnfitz -- con_buffersize replaces CON_TEXTSIZE
	con_backscroll = 0;							// johnfitz -- if console is empty, being scrolled up is confusing
}

/*
================
Con_Dump_f -- johnfitz -- adapted from quake2 source
================
*/
static void Con_Dump_f (void)
{
	int			l, x;
	const char *line;
	FILE	   *f;
	char		buffer[1024];
	char		name[MAX_OSPATH];

	q_snprintf (name, sizeof (name), "%s/%s", com_gamedir, Cmd_Argc () >= 2 ? Cmd_Argv (1) : "condump.txt");
	COM_CreatePath (name);
	f = fopen (name, "w");
	if (!f)
	{
		Con_Printf ("ERROR: couldn't open file %s.\n", name);
		return;
	}

	// skip initial empty lines
	for (l = con_current - con_totallines + 1; l <= con_current; l++)
	{
		line = con_text + (l % con_totallines) * con_linewidth;
		for (x = 0; x < con_linewidth; x++)
			if (line[x] != ' ')
				break;
		if (x != con_linewidth)
			break;
	}

	// write the remaining lines
	buffer[con_linewidth] = 0;
	for (; l <= con_current; l++)
	{
		line = con_text + (l % con_totallines) * con_linewidth;
		strncpy (buffer, line, con_linewidth);
		for (x = con_linewidth - 1; x >= 0; x--)
		{
			if (buffer[x] == ' ')
				buffer[x] = 0;
			else
				break;
		}
		for (x = 0; buffer[x]; x++)
			buffer[x] &= 0x7f;

		fprintf (f, "%s\n", buffer);
	}

	fclose (f);
	Con_Printf ("Dumped console text to %s.\n", name);
}

/*
================
Con_ClearNotify
================
*/
void Con_ClearNotify (void)
{
	int i;

	for (i = 0; i < NUM_CON_TIMES; i++)
		con_times[i] = 0;
}

/*
================
Con_MessageMode_f
================
*/
static void Con_MessageMode_f (void)
{
	if (cls.state != ca_connected || cls.demoplayback)
		return;
	chat_team = false;
	key_dest = key_message;
}

/*
================
Con_MessageMode2_f
================
*/
static void Con_MessageMode2_f (void)
{
	if (cls.state != ca_connected || cls.demoplayback)
		return;
	chat_team = true;
	key_dest = key_message;
}

/*
================
Con_CheckResize

If the line width has changed, reformat the buffer.
================
*/
void Con_CheckResize (void)
{
	int	  i, j, width, oldwidth, oldtotallines, numlines, numchars;
	char *tbuf; // johnfitz -- tbuf no longer a static array

	width = (vid.conwidth >> 3) - 2; // johnfitz -- use vid.conwidth instead of vid.width

	if (width == con_linewidth)
		return;

	SDL_LockMutex (con_mutex);

	oldwidth = con_linewidth;
	con_linewidth = width;
	oldtotallines = con_totallines;
	con_totallines = con_buffersize / con_linewidth; // johnfitz -- con_buffersize replaces CON_TEXTSIZE
	numlines = oldtotallines;

	if (con_totallines < numlines)
		numlines = con_totallines;

	numchars = oldwidth;

	if (con_linewidth < numchars)
		numchars = con_linewidth;

	tbuf = (char *)Mem_Alloc (con_buffersize); // johnfitz

	memcpy (tbuf, con_text, con_buffersize); // johnfitz -- con_buffersize replaces CON_TEXTSIZE
	memset (con_text, ' ', con_buffersize);	 // johnfitz -- con_buffersize replaces CON_TEXTSIZE

	for (i = 0; i < numlines; i++)
	{
		for (j = 0; j < numchars; j++)
		{
			con_text[(con_totallines - 1 - i) * con_linewidth + j] = tbuf[((con_current - i + oldtotallines) % oldtotallines) * oldwidth + j];
		}
	}

	Con_ClearNotify ();
	Mem_Free (tbuf);

	con_backscroll = 0;
	con_current = con_totallines - 1;

	SDL_UnlockMutex (con_mutex);
}

/*
================
Con_Init
================
*/
void Con_Init (void)
{
	int i;

	con_mutex = SDL_CreateMutex ();

	// johnfitz -- user settable console buffer size
	i = COM_CheckParm ("-consize");
	if (i && i < com_argc - 1)
		con_buffersize = q_max (CON_MINSIZE, atoi (com_argv[i + 1]) * 1024);
	else
		con_buffersize = CON_TEXTSIZE;
	// johnfitz

	con_text = (char *)Mem_Alloc (con_buffersize); // johnfitz -- con_buffersize replaces CON_TEXTSIZE
	memset (con_text, ' ', con_buffersize);		   // johnfitz -- con_buffersize replaces CON_TEXTSIZE
	con_linewidth = -1;

	// johnfitz -- no need to run Con_CheckResize here
	con_linewidth = 50;
	con_totallines = con_buffersize / con_linewidth; // johnfitz -- con_buffersize replaces CON_TEXTSIZE
	con_backscroll = 0;
	con_current = con_totallines - 1;
	// johnfitz

	Con_Printf ("Console initialized.\n");

	Cvar_RegisterVariable (&con_notifytime);
	Cvar_RegisterVariable (&con_logcenterprint); // johnfitz

	Cmd_AddCommand ("toggleconsole", Con_ToggleConsole_f);
	Cmd_AddCommand ("messagemode", Con_MessageMode_f);
	Cmd_AddCommand ("messagemode2", Con_MessageMode2_f);
	Cmd_AddCommand ("clear", Con_Clear_f);
	Cmd_AddCommand ("condump", Con_Dump_f); // johnfitz
	con_initialized = true;
}

/*
===============
Con_Linefeed
===============
*/
static void Con_Linefeed (void)
{
	// johnfitz -- improved scrolling
	if (con_backscroll)
		con_backscroll++;
	if (con_backscroll > con_totallines - (glheight >> 3) - 1)
		con_backscroll = con_totallines - (glheight >> 3) - 1;
	// johnfitz

	con_x = 0;
	con_current++;
	memset (&con_text[(con_current % con_totallines) * con_linewidth], ' ', con_linewidth);
}

/*
================
Con_Print

Handles cursor positioning, line wrapping, etc
All console printing must go through this in order to be logged to disk
If no console is visible, the notify window will pop up.
================
*/
static void Con_Print (const char *txt)
{
	int		   y;
	int		   c, l;
	static int cr;
	int		   mask;
	qboolean   boundary;

	SDL_LockMutex (con_mutex);

	// con_backscroll = 0; //johnfitz -- better console scrolling

	if (txt[0] == 1)
	{
		mask = 128;						// go to colored text
		S_LocalSound ("misc/talk.wav"); // play talk wav
		txt++;
	}
	else if (txt[0] == 2)
	{
		mask = 128; // go to colored text
		txt++;
	}
	else
		mask = 0;

	boundary = true;

	while ((c = *txt))
	{
		if (c <= ' ')
		{
			boundary = true;
		}
		else if (boundary)
		{
			// count word length
			for (l = 0; l < con_linewidth; l++)
				if (txt[l] <= ' ')
					break;

			// word wrap
			if (l != con_linewidth && (con_x + l > con_linewidth))
				con_x = 0;

			boundary = false;
		}

		txt++;

		if (cr)
		{
			con_current--;
			cr = false;
		}

		if (!con_x)
		{
			Con_Linefeed ();
			// mark time for transparent overlay
			if (con_current >= 0)
				con_times[con_current % NUM_CON_TIMES] = realtime;
		}

		switch (c)
		{
		case '\n':
			con_x = 0;
			break;

		case '\r':
			con_x = 0;
			cr = 1;
			break;

		default: // display character and advance
			y = con_current % con_totallines;
			con_text[y * con_linewidth + con_x] = c | mask;
			con_x++;
			if (con_x >= con_linewidth)
				con_x = 0;
			break;
		}
	}
	SDL_UnlockMutex (con_mutex);
}

// borrowed from uhexen2 by S.A. for new procs, LOG_Init, LOG_Close

static char logfilename[MAX_OSPATH]; // current logfile name
static int	log_fd = -1;			 // log file descriptor

/*
================
Con_DebugLog
================
*/
void Con_DebugLog (const char *msg)
{
	if (log_fd == -1)
		return;

	size_t msg_len = strlen (msg);
	if (write (log_fd, msg, msg_len) != msg_len)
		return; // Nonsense to supress warning
}

/*
================
Con_Printf

Handles cursor positioning, line wrapping, etc
================
*/
#define MAXPRINTMSG 4096
void Con_Printf (const char *fmt, ...)
{
	va_list			argptr;
	char			msg[MAXPRINTMSG];
	static qboolean inupdate;

	va_start (argptr, fmt);
	q_vsnprintf (msg, sizeof (msg), fmt, argptr);
	va_end (argptr);

	if (con_redirect_flush)
		q_strlcat (con_redirect_buffer, msg, sizeof (con_redirect_buffer));
	// also echo to debugging console
	Sys_Printf ("%s", msg);

	// log all messages to file
	if (con_debuglog)
		Con_DebugLog (msg);

	if (!con_initialized)
		return;

	if (cls.state == ca_dedicated)
		return; // no graphics mode

	// write it to the scrollable buffer
	Con_Print (msg);

	// update the screen if the console is displayed
	if (cls.signon != SIGNONS && !scr_disabled_for_loading && !Tasks_IsWorker ())
	{
		// protect against infinite loop if something in SCR_UpdateScreen calls
		// Con_Printd
		if (!inupdate)
		{
			inupdate = true;
			SCR_UpdateScreen (false);
			inupdate = false;
		}
	}
}

/*
================
Con_DWarning -- ericw

same as Con_Warning, but only prints if "developer" cvar is set.
use for "exceeds standard limit of" messages, which are only relevant for developers
targetting vanilla engines
================
*/
void Con_DWarning (const char *fmt, ...)
{
	va_list argptr;
	char	msg[MAXPRINTMSG];

	if (developer.value >= 2)
	{ // don't confuse non-developers with techie stuff...
		// (this is limit exceeded warnings)

		va_start (argptr, fmt);
		q_vsnprintf (msg, sizeof (msg), fmt, argptr);
		va_end (argptr);

		Con_SafePrintf ("\x02Warning: ");
		Con_SafePrintf ("%s", msg);
	}
}

/*
================
Con_Warning -- johnfitz -- prints a warning to the console. Is thread-safe.
================
*/
void Con_Warning (const char *fmt, ...)
{
	va_list argptr;
	char	msg[MAXPRINTMSG];

	va_start (argptr, fmt);
	q_vsnprintf (msg, sizeof (msg), fmt, argptr);
	va_end (argptr);

	Con_SafePrintf ("\x02Warning: ");
	Con_SafePrintf ("%s", msg);
}

/*
================
Con_DPrintf

A Con_Printf that only shows up if the "developer" cvar is set
================
*/
void Con_DPrintf (const char *fmt, ...)
{
	va_list argptr;
	char	msg[MAXPRINTMSG];

	if (!developer.value)
		return; // don't confuse non-developers with techie stuff...

	va_start (argptr, fmt);
	q_vsnprintf (msg, sizeof (msg), fmt, argptr);
	va_end (argptr);

	Con_SafePrintf ("%s", msg); // johnfitz -- was Con_Printf
}

/*
================
Con_DPrintf2 -- johnfitz -- only prints if "developer" >= 2

currently not used
================
*/
void Con_DPrintf2 (const char *fmt, ...)
{
	va_list argptr;
	char	msg[MAXPRINTMSG];

	if (developer.value >= 2)
	{
		va_start (argptr, fmt);
		q_vsnprintf (msg, sizeof (msg), fmt, argptr);
		va_end (argptr);
		Con_Printf ("%s", msg);
	}
}

/*
==================
Con_SafePrintf

Okay to call even when the screen can't be updated
==================
*/
void Con_SafePrintf (const char *fmt, ...)
{
	va_list argptr;
	char	msg[MAXPRINTMSG];
	int		temp;

	va_start (argptr, fmt);
	q_vsnprintf (msg, sizeof (msg), fmt, argptr);
	va_end (argptr);

	SDL_LockMutex (con_mutex);
	temp = scr_disabled_for_loading;
	scr_disabled_for_loading = true;
	Con_Printf ("%s", msg);
	scr_disabled_for_loading = temp;
	SDL_UnlockMutex (con_mutex);
}

/*
================
Con_CenterPrintf -- johnfitz -- pad each line with spaces to make it appear centered
================
*/
void Con_CenterPrintf (int linewidth, const char *fmt, ...) FUNC_PRINTF (2, 3);
void Con_CenterPrintf (int linewidth, const char *fmt, ...)
{
	va_list argptr;
	char	msg[MAXPRINTMSG];  // the original message
	char	line[MAXPRINTMSG]; // one line from the message
	char	spaces[21];		   // buffer for spaces
	char   *src, *dst;
	int		len, s;

	va_start (argptr, fmt);
	q_vsnprintf (msg, sizeof (msg), fmt, argptr);
	va_end (argptr);

	linewidth = q_min (linewidth, con_linewidth);
	for (src = msg; *src;)
	{
		dst = line;
		while (*src && *src != '\n')
			*dst++ = *src++;
		*dst = 0;
		if (*src == '\n')
			src++;

		len = strlen (line);
		if (len < linewidth)
		{
			s = (linewidth - len) / 2;
			memset (spaces, ' ', s);
			spaces[s] = 0;
			Con_Printf ("%s%s\n", spaces, line);
		}
		else
			Con_Printf ("%s\n", line);
	}
}

/*
==================
Con_LogCenterPrint -- johnfitz -- echo centerprint message to the console
==================
*/
void Con_LogCenterPrint (const char *str)
{
	if (cls.demoseeking)
		return;

	if (!strcmp (str, con_lastcenterstring))
		return; // ignore duplicates

	if (cl.gametype == GAME_DEATHMATCH && con_logcenterprint.value != 2)
		return; // don't log in deathmatch

	strcpy (con_lastcenterstring, str);

	if (con_logcenterprint.value)
	{
		Con_Printf ("%s", Con_Quakebar (40));
		Con_CenterPrintf (40, "%s\n", str);
		Con_Printf ("%s", Con_Quakebar (40));
		Con_ClearNotify ();
	}
}

qboolean Con_IsRedirected (void)
{
	return !!con_redirect_flush;
}
void Con_Redirect (void (*flush) (const char *))
{
	if (con_redirect_flush)
		con_redirect_flush (con_redirect_buffer);
	*con_redirect_buffer = 0;
	con_redirect_flush = flush;
}

/*
==============================================================================

	TAB COMPLETION

==============================================================================
*/

// johnfitz -- tab completion stuff
// unique defs
char key_tabpartial[MAXCMDLINE];
typedef struct tab_s
{
	const char	 *name;
	const char	 *type;
	struct tab_s *next;
	struct tab_s *prev;
} tab_t;
tab_t *tablist;

// defs from elsewhere
extern qboolean		   keydown[256];
extern cmd_function_t *cmd_functions;
#define MAX_ALIAS_NAME 32
typedef struct cmdalias_s
{
	struct cmdalias_s *next;
	char			   name[MAX_ALIAS_NAME];
	char			  *value;
} cmdalias_t;
extern cmdalias_t *cmd_alias;

/*
============
AddToTabList -- johnfitz

tablist is a doubly-linked loop, alphabetized by name
============
*/

// bash_partial is the string that can be expanded,
// aka Linux Bash shell. -- S.A.
static char		bash_partial[80];
static qboolean bash_singlematch;

void AddToTabList (const char *name, const char *type)
{
	tab_t	   *t, *insert;
	char	   *i_bash;
	const char *i_name;

	if (!*bash_partial)
	{
		strncpy (bash_partial, name, 79);
		bash_partial[79] = '\0';
	}
	else
	{
		bash_singlematch = 0;
		// find max common between bash_partial and name
		i_bash = bash_partial;
		i_name = name;
		while (*i_bash && (*i_bash == *i_name))
		{
			i_bash++;
			i_name++;
		}
		*i_bash = 0;
	}

	t = (tab_t *)Mem_Alloc (sizeof (tab_t));
	t->name = name;
	t->type = type;

	if (!tablist) // create list
	{
		tablist = t;
		t->next = t;
		t->prev = t;
	}
	else if (strcmp (name, tablist->name) < 0) // insert at front
	{
		t->next = tablist;
		t->prev = tablist->prev;
		t->next->prev = t;
		t->prev->next = t;
		tablist = t;
	}
	else // insert later
	{
		insert = tablist;
		do
		{
			if (strcmp (name, insert->name) < 0)
				break;
			insert = insert->next;
		} while (insert != tablist);

		t->next = insert;
		t->prev = insert->prev;
		t->next->prev = t;
		t->prev->next = t;
	}
}

typedef struct arg_completion_type_s
{
	const char		 *command;
	filelist_item_t **filelist;
} arg_completion_type_t;

static const arg_completion_type_t arg_completion_types[] = {{"map ", &extralevels}, {"changelevel ", &extralevels}, {"game ", &modlist},
															 {"record ", &demolist}, {"playdemo ", &demolist},		 {"timedemo ", &demolist},
															 {"save ", &savelist},	 {"load ", &savelist},			 {"fastload ", &savelist}};

static const int num_arg_completion_types = countof (arg_completion_types);

/*
============
FindCompletion -- stevenaaus
============
*/
const char *FindCompletion (const char *partial, filelist_item_t *filelist, int *nummatches_out)
{
	static char		 matched[32];
	char			*i_matched, *i_name;
	filelist_item_t *file;
	int				 init, match, plen;

	memset (matched, 0, sizeof (matched));
	plen = strlen (partial);
	match = 0;

	for (file = filelist, init = 0; file; file = file->next)
	{
		if (!strncmp (file->name, partial, plen))
		{
			if (init == 0)
			{
				init = 1;
				memcpy (matched, file->name, sizeof (matched));
				matched[sizeof (matched) - 1] = '\0';
			}
			else
			{ // find max common
				i_matched = matched;
				i_name = file->name;
				while (*i_matched && (*i_matched == *i_name))
				{
					i_matched++;
					i_name++;
				}
				*i_matched = 0;
			}
			match++;
		}
	}

	*nummatches_out = match;

	if (match > 1)
	{
		for (file = filelist; file; file = file->next)
		{
			if (!strncmp (file->name, partial, plen))
				Con_SafePrintf ("   %s\n", file->name);
		}
		Con_SafePrintf ("\n");
	}

	return matched;
}

/*
============
BuildTabList -- johnfitz
============
*/
void BuildTabList (const char *partial)
{
	cmdalias_t	   *alias;
	cvar_t		   *cvar;
	cmd_function_t *cmd;
	int				len;

	tablist = NULL;
	len = strlen (partial);

	bash_partial[0] = 0;
	bash_singlematch = 1;

	cvar = Cvar_FindVarAfter ("", CVAR_NONE);
	for (; cvar; cvar = cvar->next)
		if (!strncmp (partial, cvar->name, len))
			AddToTabList (cvar->name, "cvar");

	for (cmd = cmd_functions; cmd; cmd = cmd->next)
		if (!strncmp (partial, cmd->name, len))
			AddToTabList (cmd->name, "command");

	for (alias = cmd_alias; alias; alias = alias->next)
		if (!strncmp (partial, alias->name, len))
			AddToTabList (alias->name, "alias");
}

/*
============
Con_TabComplete -- johnfitz
============
*/
void Con_TabComplete (void)
{
	char		 partial[MAXCMDLINE];
	const char	*match;
	static char *c;
	tab_t		*t;
	int			 i, j;

	// if editline is empty, return
	if (key_lines[edit_line][1] == 0)
		return;

	// get partial string (space -> cursor)
	if (!key_tabpartial[0]) // first time through, find new insert point. (Otherwise, use previous.)
	{
		// work back from cursor until you find a space, quote, semicolon, or prompt
		c = key_lines[edit_line] + key_linepos - 1; // start one space left of cursor
		while (*c != ' ' && *c != '\"' && *c != ';' && c != key_lines[edit_line])
			c--;
		c++; // start 1 char after the separator we just found
	}
	for (i = 0; c + i < key_lines[edit_line] + key_linepos; i++)
		partial[i] = c[i];
	partial[i] = 0;

	// Map autocomplete function -- S.A
	// Since we don't have argument completion, this hack will do for now...
	for (j = 0; j < num_arg_completion_types; j++)
	{
		// arg_completion contains a command we can complete the arguments
		// for (like "map ") and a list of all the maps.
		arg_completion_type_t arg_completion = arg_completion_types[j];
		const char			 *command_name = arg_completion.command;

		if (!strncmp (key_lines[edit_line] + 1, command_name, strlen (command_name)))
		{
			int			nummatches = 0;
			const char *matched_map = FindCompletion (partial, *arg_completion.filelist, &nummatches);
			if (!*matched_map)
				return;
			q_strlcpy (partial, matched_map, MAXCMDLINE);
			*c = '\0';
			q_strlcat (key_lines[edit_line], partial, MAXCMDLINE);
			key_linepos = c - key_lines[edit_line] + strlen (matched_map); // set new cursor position
			if (key_linepos >= MAXCMDLINE)
				key_linepos = MAXCMDLINE - 1;
			// if only one match, append a space
			if (key_linepos < MAXCMDLINE - 1 && key_lines[edit_line][key_linepos] == 0 && (nummatches == 1))
			{
				key_lines[edit_line][key_linepos] = ' ';
				key_linepos++;
				key_lines[edit_line][key_linepos] = 0;
			}
			c = key_lines[edit_line] + key_linepos;
			return;
		}
	}

	// if partial is empty, return
	if (partial[0] == 0)
		return;

	// trim trailing space becuase it screws up string comparisons
	if (i > 0 && partial[i - 1] == ' ')
		partial[i - 1] = 0;

	// find a match
	if (!key_tabpartial[0]) // first time through
	{
		q_strlcpy (key_tabpartial, partial, MAXCMDLINE);
		BuildTabList (key_tabpartial);

		if (!tablist)
			return;

		// print list if length > 1
		if (tablist->next != tablist)
		{
			t = tablist;
			Con_SafePrintf ("\n");
			do
			{
				Con_SafePrintf ("   %s (%s)\n", t->name, t->type);
				t = t->next;
			} while (t != tablist);
			Con_SafePrintf ("\n");
		}

		//	match = tablist->name;
		// First time, just show maximum matching chars -- S.A.
		match = bash_partial;
	}
	else
	{
		BuildTabList (key_tabpartial);

		if (!tablist)
			return;

		// find current match -- can't save a pointer because the list will be rebuilt each time
		t = tablist;
		match = keydown[K_SHIFT] ? t->prev->name : t->name;
		do
		{
			if (!strcmp (t->name, partial))
			{
				match = keydown[K_SHIFT] ? t->prev->name : t->next->name;
				break;
			}
			t = t->next;
		} while (t != tablist);
	}

	// insert new match into edit line
	q_strlcpy (partial, match, MAXCMDLINE);								 // first copy match string
	q_strlcat (partial, key_lines[edit_line] + key_linepos, MAXCMDLINE); // then add chars after cursor
	*c = '\0';															 // now copy all of this into edit line
	q_strlcat (key_lines[edit_line], partial, MAXCMDLINE);
	key_linepos = c - key_lines[edit_line] + strlen (match); // set new cursor position
	if (key_linepos >= MAXCMDLINE)
		key_linepos = MAXCMDLINE - 1;

	// if cursor is at end of string, let's append a space to make life easier
	if (key_linepos < MAXCMDLINE - 1 && key_lines[edit_line][key_linepos] == 0 && bash_singlematch)
	{
		key_lines[edit_line][key_linepos] = ' ';
		key_linepos++;
		key_lines[edit_line][key_linepos] = 0;
		// S.A.: the map argument completion (may be in combination with the bash-style
		// display behavior changes, causes weirdness when completing the arguments for
		// the changelevel command. the line below "fixes" it, although I'm not sure about
		// the reason, yet, neither do I know any possible side effects of it:
		c = key_lines[edit_line] + key_linepos;
	}
}

/*
==============================================================================

DRAWING

==============================================================================
*/

/*
================
Con_DrawNotify

Draws the last few lines of output transparently over the game top
================
*/
void Con_DrawNotify (cb_context_t *cbx)
{
	int			i, x, v;
	const char *text;
	float		time;

	GL_SetCanvas (cbx, CANVAS_CONSOLE); // johnfitz
	v = vid.conheight;					// johnfitz

	for (i = con_current - NUM_CON_TIMES + 1; i <= con_current; i++)
	{
		if (i < 0)
			continue;
		time = con_times[i % NUM_CON_TIMES];
		if (time == 0)
			continue;
		time = realtime - time;
		if (time > con_notifytime.value / (scr_viewsize.value >= 130 ? 4 : 1))
			continue;
		text = con_text + (i % con_totallines) * con_linewidth;

		for (x = 0; x < con_linewidth; x++)
			Draw_Character (cbx, (x + 1) << 3, v, text[x]);

		v += 8;
	}

	if (key_dest == key_message)
	{
		if (chat_team)
		{
			Draw_String (cbx, 8, v, "say_team:");
			x = 11;
		}
		else
		{
			Draw_String (cbx, 8, v, "say:");
			x = 6;
		}

		text = Key_GetChatBuffer ();
		i = Key_GetChatMsgLen ();
		if (i > con_linewidth - x - 1)
			text += i - con_linewidth + x + 1;

		while (*text)
		{
			Draw_Character (cbx, x << 3, v, *text);
			x++;
			text++;
		}

		Draw_Character (cbx, x << 3, v, 10 + ((int)(realtime * con_cursorspeed) & 1));
		v += 8;
	}
}

/*
================
Con_DrawInput -- johnfitz -- modified to allow insert editing

The input line scrolls horizontally if typing goes beyond the right edge
================
*/
extern qpic_t *pic_ovr, *pic_ins; // johnfitz -- new cursor handling

void Con_DrawInput (cb_context_t *cbx)
{
	int i, ofs;

	if (key_dest != key_console && !con_forcedup)
		return; // don't draw anything

	// prestep if horizontally scrolling
	if (key_linepos >= con_linewidth)
		ofs = 1 + key_linepos - con_linewidth;
	else
		ofs = 0;

	// draw input string
	for (i = 0; key_lines[edit_line][i + ofs] && i < con_linewidth; i++)
		Draw_Character (cbx, (i + 1) << 3, vid.conheight - 16, key_lines[edit_line][i + ofs]);

	// johnfitz -- new cursor handling
	if (!((int)((realtime - key_blinktime) * con_cursorspeed) & 1))
	{
		i = key_linepos - ofs;
		Draw_Pic (cbx, (i + 1) << 3, vid.conheight - 16, key_insert ? pic_ins : pic_ovr, 1.0f, false);
	}
}

/*
================
Con_DrawConsole -- johnfitz -- heavy revision

Draws the console with the solid background
The typing input line at the bottom should only be drawn if typing is allowed
================
*/
void Con_DrawConsole (cb_context_t *cbx, int lines, qboolean drawinput)
{
	int			i, x, y, j, sb, rows;
	const char *text;
	char		ver[32];

	if (lines <= 0)
		return;

	con_vislines = lines * vid.conheight / glheight;
	GL_SetCanvas (cbx, CANVAS_CONSOLE);

	// draw the background
	Draw_ConsoleBackground (cbx);

	// draw the buffer text
	rows = (con_vislines + 7) / 8;
	y = vid.conheight - rows * 8;
	rows -= 2; // for input and version lines
	sb = (con_backscroll) ? 2 : 0;

	for (i = con_current - rows + 1; i <= con_current - sb; i++, y += 8)
	{
		j = i - con_backscroll;
		if (j < 0)
			j = 0;
		text = con_text + (j % con_totallines) * con_linewidth;

		for (x = 0; x < con_linewidth; x++)
			Draw_Character (cbx, (x + 1) << 3, y, text[x]);
	}

	// draw scrollback arrows
	if (con_backscroll)
	{
		y += 8; // blank line
		for (x = 0; x < con_linewidth; x += 4)
			Draw_Character (cbx, (x + 1) << 3, y, '^');
		y += 8;
	}

	// draw the input prompt, user text, and cursor
	if (drawinput)
		Con_DrawInput (cbx);

	// draw version number in bottom right
	y += 8;
	q_snprintf (ver, sizeof (ver), ENGINE_NAME_AND_VER);
	for (x = 0; x < (int)strlen (ver); x++)
		Draw_Character (cbx, (con_linewidth - strlen (ver) + x + 2) << 3, y, ver[x] /*+ 128*/);
}

/*
==================
Con_NotifyBox
==================
*/
void Con_NotifyBox (const char *text)
{
	double t1, t2;
	int	   lastkey, lastchar;

	// during startup for sound / cd warnings
	Con_Printf ("\n\n%s", Con_Quakebar (40)); // johnfitz
	Con_Printf ("%s", text);
	Con_Printf ("Press a key.\n");
	Con_Printf ("%s", Con_Quakebar (40)); // johnfitz

	IN_Deactivate (modestate == MS_WINDOWED);
	key_dest = key_console;

	Key_BeginInputGrab ();
	do
	{
		t1 = Sys_DoubleTime ();
		SCR_UpdateScreen (false);
		Sys_SendKeyEvents ();
		Key_GetGrabbedInput (&lastkey, &lastchar);
		Sys_Sleep (16);
		t2 = Sys_DoubleTime ();
		realtime += t2 - t1; // make the cursor blink
	} while (lastkey == -1 && lastchar == -1);
	Key_EndInputGrab ();

	Con_Printf ("\n");
	IN_Activate ();
	key_dest = key_game;
	realtime = 0; // put the cursor back to invisible
}

void LOG_Init (quakeparms_t *parms)
{
	time_t inittime;
	char   session[24];

	// always activate the console log in Debug mode
#if !defined(DEBUG) && !defined(_DEBUG)
	if (!COM_CheckParm ("-condebug"))
		return;
#endif

	inittime = time (NULL);
	strftime (session, sizeof (session), "%m/%d/%Y %H:%M:%S", localtime (&inittime));
	q_snprintf (logfilename, sizeof (logfilename), "%s/qconsole.log", parms->basedir);

	//	unlink (logfilename);

	log_fd = open (logfilename, O_WRONLY | O_CREAT | O_TRUNC, 0666);
	if (log_fd == -1)
	{
		fprintf (stderr, "Error: Unable to create log file %s\n", logfilename);
		return;
	}

	con_debuglog = true;
	Con_DebugLog (va ("LOG started on: %s \n", session));
}

void LOG_Close (void)
{
	if (log_fd == -1)
		return;
	close (log_fd);
	log_fd = -1;
}
