/* $Id$
 * $URL$
 *
 * pure ncurses based text driver
 *
 * Copyright (C) 2004 Michael Reinelt <michael@reinelt.co.at>
 * Copyright (C) 2004 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net>
 *
 * based on the old Curses/Text driver which is
 * Copyright (C) 2001 Leopold Toetsch <lt@toetsch.at>
 *
 * This file is part of LCD4Linux.
 *
 * LCD4Linux 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, or (at your option)
 * any later version.
 *
 * LCD4Linux 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., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 */

/* 
 *
 * exported fuctions:
 *
 * struct DRIVER drv_Curses
 *
 */

#include "config.h"

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

#include <curses.h>

#include "debug.h"
#include "cfg.h"
#include "qprintf.h"
#include "timer.h"
#include "plugin.h"
#include "widget.h"
#include "widget_text.h"
#include "widget_bar.h"
#include "widget_keypad.h"
#include "drv.h"
#include "drv_generic_text.h"
#include "drv_generic_keypad.h"


static char Name[] = "Curses";

static WINDOW *w = NULL;
static WINDOW *e = NULL;

static int EROWS;


/****************************************/
/***  hardware dependant functions    ***/
/****************************************/

static void drv_Curs_clear(void)
{
    werase(w);
    box(w, 0, 0);
    wrefresh(w);
}


static void drv_Curs_write(const int row, const int col, const char *data, const int len)
{
    int l = len;
    char *p;

    while ((p = strpbrk(data, "\r\n")) != NULL) {
	*p = '\0';
    }

    if (col < DCOLS) {
	if (DCOLS - col < l)
	    l = DCOLS - col;
	mvwprintw(w, row + 1, col + 1, "%.*s", l, data);
	wmove(w, DROWS + 1, 0);
	wrefresh(w);
    }
}


static void drv_Curs_defchar(const __attribute__ ((unused))
			     int ascii, const __attribute__ ((unused))
			     unsigned char *buffer)
{
    /* empty */
}


/* ncures scroll SIGSEGVs on my system, so this is a workaroud */

int curses_error(char *buffer)
{
    static int lines = 0;
    static char *lb[100];
    int start, i;
    char *p;

    if (e == NULL)
	return 0;

    /* replace \r, \n with underscores */
    while ((p = strpbrk(buffer, "\r\n")) != NULL) {
	*p = '_';
    }

    if (lines >= EROWS) {
	free(lb[0]);
	for (i = 1; i <= EROWS; i++) {
	    lb[i - 1] = lb[i];
	}
	start = 0;
    } else {
	start = lines;
    }

    lb[lines] = strdup(buffer);
    for (i = start; i <= lines; i++) {
	mvwprintw(e, i + 1, 1, "%s", lb[i]);
	wclrtoeol(e);
    }

    box(e, 0, 0);
    mvwprintw(e, 0, 3, "Stderr:");
    wrefresh(e);

    if (lines < EROWS)
	lines++;

    return 1;
}


static int drv_Curs_start(const char *section, const int quiet)
{
    char *s;

    if (!running_foreground) {
	error("%s: You want me to display on /dev/null? Sorry, I can't ...", Name);
	error("%s: Maybe you want me to run in foreground? Try '-F'", Name);
	return -1;
    }

    s = cfg_get(section, "Size", "20x4");
    if (s == NULL || *s == '\0') {
	error("%s: no '%s.Size' entry from %s", Name, section, cfg_source());
	free(s);
	return -1;
    }
    if (sscanf(s, "%dx%d", &DCOLS, &DROWS) != 2 || DROWS < 1 || DCOLS < 1) {
	error("%s: bad %s.Size '%s' from %s", Name, section, s, cfg_source());
	free(s);
	return -1;
    }
    free(s);

    initscr();
    noecho();
    debug("%s: curses thinks that COLS=%d LINES=%d", Name, COLS, LINES);
    w = newwin(DROWS + 2, DCOLS + 2, 0, 0);
    keypad(w, TRUE);
    nodelay(w, TRUE);

    EROWS = LINES - DROWS - 3;
    if<style>pre { line-height: 125%; margin: 0; }
td.linenos pre { color: #000000; background-color: #f0f0f0; padding: 0 5px 0 5px; }
span.linenos { color: #000000; background-color: #f0f0f0; padding: 0 5px 0 5px; }
td.linenos pre.special { color: #000000; background-color: #ffffc0; padding: 0 5px 0 5px; }
span.linenos.special { color: #000000; background-color: #ffffc0; padding: 0 5px 0 5px; }
.highlight .hll { background-color: #ffffcc }
.highlight .c { color: #888888 } /* Comment */
.highlight .err { color: #a61717; background-color: #e3d2d2 } /* Error */
.highlight .k { color: #008800; font-weight: bold } /* Keyword */
.highlight .ch { color: #888888 } /* Comment.Hashbang */
.highlight .cm { color: #888888 } /* Comment.Multiline */
.highlight .cp { color: #cc0000; font-weight: bold } /* Comment.Preproc */
.highlight .cpf { color: #888888 } /* Comment.PreprocFile */
.highlight .c1 { color: #888888 } /* Comment.Single */
.highlight .cs { color: #cc0000; font-weight: bold; background-color: #fff0f0 } /* Comment.Special */
.highlight .gd { color: #000000; background-color: #ffdddd } /* Generic.Deleted */
.highlight .ge { font-style: italic } /* Generic.Emph */
.highlight .gr { color: #aa0000 } /* Generic.Error */
.highlight .gh { color: #333333 } /* Generic.Heading */
.highlight .gi { color: #000000; background-color: #ddffdd } /* Generic.Inserted */
.highlight .go { color: #888888 } /* Generic.Output */
.highlight .gp { color: #555555 } /* Generic.Prompt */
.highlight .gs { font-weight: bold } /* Generic.Strong */
.highlight .gu { color: #666666 } /* Generic.Subheading */
.highlight .gt { color: #aa0000 } /* Generic.Traceback */
.highlight .kc { color: #008800; font-weight: bold } /* Keyword.Constant */
.highlight .kd { color: #008800; font-weight: bold } /* Keyword.Declaration */
.highlight .kn { color: #008800; font-weight: bold } /* Keyword.Namespace */
.highlight .kp { color: #008800 } /* Keyword.Pseudo */
.highlight .kr { color: #008800; font-weight: bold } /* Keyword.Reserved */
.highlight .kt { color: #888888; font-weight: bold } /* Keyword.Type */
.highlight .m { color: #0000DD; font-weight: bold } /* Literal.Number */
.highlight .s { color: #dd2200; background-color: #fff0f0 } /* Literal.String */
.highlight .na { color: #336699 } /* Name.Attribute */
.highlight .nb { color: #003388 } /* Name.Builtin */
.highlight .nc { color: #bb0066; font-weight: bold } /* Name.Class */
.highlight .no { color: #003366; font-weight: bold } /* Name.Constant */
.highlight .nd { color: #555555 } /* Name.Decorator */
.highlight .ne { color: #bb0066; font-weight: bold } /* Name.Exception */
.highlight .nf { color: #0066bb; font-weight: bold } /* Name.Function */
.highlight .nl { color: #336699; font-style: italic } /* Name.Label */
.highlight .nn { color: #bb0066; font-weight: bold } /* Name.Namespace */
.highlight .py { color: #336699; font-weight: bold } /* Name.Property */
.highlight .nt { color: #bb0066; font-weight: bold } /* Name.Tag */
.highlight .nv { color: #336699 } /* Name.Variable */
.highlight .ow { color: #008800 } /* Operator.Word */
.highlight .w { color: #bbbbbb } /* Text.Whitespace */
.highlight .mb { color: #0000DD; font-weight: bold } /* Literal.Number.Bin */
.highlight .mf { color: #0000DD; font-weight: bold } /* Literal.Number.Float */
.highlight .mh { color: #0000DD; font-weight: bold } /* Literal.Number.Hex */
.highlight .mi { color: #0000DD; font-weight: bold } /* Literal.Number.Integer */
.highlight .mo { color: #0000DD; font-weight: bold } /* Literal.Number.Oct */
.highlight .sa { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Affix */
.highlight .sb { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Backtick */
.highlight .sc { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Char */
.highlight .dl { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Delimiter */
.highlight .sd { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Doc */
.highlight .s2 { co