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+/* $Id$ */
+
+/*
+ * hed - Hexadecimal editor
+ * Copyright (C) 2004  Petr Baudis <pasky@ucw.cz>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ * 
+ * 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
+ */
+
+/*
+ * `There's only stars, as I thought,' he said. Then he gave a low gasp, for
+ * the stars went out. As if a dark veil had been withdrawn, the Mirror grew
+ * grey, and then clear. There was sun shining, and the branches of trees were
+ * waving and tossing in the wind.
+ */
+
+/* Feature macros needed for:
+ *  - stpcpy
+ *  - vasprintf
+ */
+#define _GNU_SOURCE
+
+#include <config.h>
+
+#include <curses.h>
+#include <stdlib.h>
+
+#include <hed.h>
+
+#include <term/term.h>
+
+
+static WINDOW *scr;
+int color2attr[64];
+
+#define DEFCOLOR(PN, FG, BG, ATTRS)				\
+	[ ( COLOR_ ## PN ) - 1 ] = {				\
+		.fg = ( COLOR_ ## FG ),				\
+		.bg = ( COLOR_ ## BG ),				\
+		.attrs = COLOR_PAIR( COLOR_ ## PN ) | (ATTRS ) }
+
+static struct {
+	short fg, bg;
+	int attrs;
+} colordefs[] = {
+	//	pair number	fg	bg	attrs
+	DEFCOLOR(NEUTRAL,	WHITE,	BLACK,	0),
+	DEFCOLOR(OFFSET,	YELLOW,	BLACK,	A_BOLD),
+	DEFCOLOR(STATUS,	WHITE,	BLACK,	0),
+	DEFCOLOR(MODE,		WHITE,	BLACK,	A_BOLD),
+	DEFCOLOR(MARK,		YELLOW,	BLACK,	A_BOLD),
+	DEFCOLOR(ERROR,		RED,	BLACK,	A_BOLD),
+	DEFCOLOR(DIRTY,		RED,	BLACK,	A_BOLD),
+
+	DEFCOLOR(HEX,		WHITE,	BLACK,	0),
+	DEFCOLOR(UNHEX,		WHITE,	BLUE,	0),
+	DEFCOLOR(ASC,		GREEN,	BLACK,	A_BOLD),
+	DEFCOLOR(UNASC,		GREEN,	BLUE,	A_BOLD),
+	DEFCOLOR(CURHEX,	WHITE,	BLACK,	A_BOLD),
+	DEFCOLOR(CURUNHEX,	WHITE,	BLUE,	A_BOLD),
+	DEFCOLOR(CURASC,	YELLOW,	BLACK,	A_BOLD),
+	DEFCOLOR(CURUNASC,	YELLOW,	BLUE,	A_BOLD),
+};
+
+#undef DEFCOLOR
+
+#ifdef CONFIG_CUSTOM_COLORS
+
+#include <string.h>
+#include <ctype.h>
+#include <config/config.h>
+
+struct valdesc {
+	const char *const name;
+	const size_t len;
+	const int val;
+};
+
+static int
+parseval(char **pstr, const struct valdesc *vals, int nvals, bool mult)
+{
+	char *p, *q;
+	size_t len;
+	int i, ret = 0;
+
+	while (**pstr) {
+		for (p = *pstr; isspace(*p); ++p);
+		for (q = p; *q && !isspace(*q); ++q);
+		len = q - p;
+		*pstr = q;
+
+		for (i = 0; i < nvals; ++i) {
+			if (vals[i].len != len)
+				continue;
+			if (strncasecmp(p, vals[i].name, len))
+				continue;
+			ret |= vals[i].val;
+		}
+		if (!mult)
+			break;
+	}
+	return ret;
+}
+
+static inline int
+parsecolor(char **pstr)
+{
+#define COLDESC(COL) {				\
+		.name = #COL,			\
+		.len = (sizeof(#COL)) - 1,	\
+		.val = COLOR_ ## COL }
+	static const struct valdesc colors[] = {
+		COLDESC(BLACK),
+		COLDESC(RED),
+		COLDESC(GREEN),
+		COLDESC(YELLOW),
+		COLDESC(BLUE),
+		COLDESC(MAGENTA),
+		COLDESC(CYAN),
+		COLDESC(WHITE),
+	};
+#undef COLDESC
+
+	return parseval(pstr,
+			colors, sizeof(colors) / sizeof(colors[0]),
+			false);
+}
+
+static inline int
+parseattrs(char **pstr)
+{
+#define ATTRDESC(ATTR) {			\
+		.name = #ATTR,			\
+		.len = (sizeof(#ATTR)) - 1,	\
+		.val = A_ ## ATTR }
+	static const struct valdesc attrs[] = {
+		ATTRDESC(NORMAL),
+		ATTRDESC(STANDOUT),
+		ATTRDESC(UNDERLINE),
+		ATTRDESC(REVERSE),
+		ATTRDESC(BLINK),
+		ATTRDESC(DIM),
+		ATTRDESC(BOLD),
+		ATTRDESC(PROTECT),
+		ATTRDESC(INVIS),
+		ATTRDESC(ALTCHARSET),
+	};
+#undef ATTRDESC
+
+	return parseval(pstr,
+			attrs, sizeof(attrs) / sizeof(attrs[0]),
+			true);
+}
+
+static void
+config_colors(void)
+{
+	static const char * const names[] = {
+		"neutral", "offset", "status", "mode",
+		"mark", "error", "dirty",
+		"hex", "unhex", "asc", "unasc",
+		"curhex", "curunhex", "curasc", "curunasc" };
+	int i;
+
+	for (i = 0; i < sizeof(names) / sizeof(names[0]); ++i) {
+		char *spec, name[16];
+
+		strcpy(stpcpy(name, "color_"), names[i]);
+		if (! (spec = get_opt_str(name, NULL)) )
+			continue;
+
+		colordefs[i].fg = parsecolor(&spec);
+		colordefs[i].bg = parsecolor(&spec);
+		colordefs[i].attrs = parseattrs(&spec) | COLOR_PAIR(i + 1);
+	}
+}
+
+#else
+
+#define config_colors()	do { } while(0)
+
+#endif	/* CONFIG_CUSTOM_COLORS */
+
+/* Initialize the terminal. */
+void
+term_init(void)
+{
+	int i;
+
+	scr = initscr();
+	cbreak(); noecho(); nonl();
+	intrflush(scr, FALSE);
+	keypad(scr, TRUE);
+
+	config_colors();
+	start_color();
+	for (i = 0; i < sizeof(colordefs) / sizeof(colordefs[0]); ++i) {
+		init_pair(i + 1, colordefs[i].fg, colordefs[i].bg);
+		color2attr[i+1] = colordefs[i].attrs;
+	}
+
+	refresh();
+}
+
+/* Deinitialize the terminal. */
+void
+term_done(void)
+{
+	endwin();
+}
+
+/* Redraw the terminal. */
+void term_redraw(void)
+{
+	refresh();
+}
+
+
+/* Move the cursor around to the given position. */
+void
+term_goto_cursor(int x, int y)
+{
+	move(y, x);
+}
+
+/* Get window dimensions. */
+int
+term_get_max_x(void)
+{
+	int x, y;
+	getmaxyx(stdscr, y, x);
+	return x;
+}
+
+int
+term_get_max_y(void)
+{
+	int x, y;
+	getmaxyx(stdscr, y, x);
+	return y;
+}
+
+/* Clear the given line. Can move cursor around. */
+void
+term_clear_line(int y)
+{
+	move(y, 0);
+	clrtoeol();
+}
+
+/* Print formatted output to the terminal. */
+int
+term_printf(int x, int y, term_color color, const char *fmt, ...)
+{
+	va_list va;
+	char *str;
+	int len;
+
+	va_start(va, fmt);
+	len = vasprintf(&str, fmt, va);
+	va_end(va);
+	term_print_string(x, y, color, str);
+	free(str);
+	return len;
+}
+
+/* Get a character from the terminal. */
+int
+term_get_char(void)
+{
+	return getch();
+}