new colorbars program from Nathanial Sloss

3 files changed, 177 insertions, 0 deletions

diff --git a/colorbars/Makefile b/colorbars/Makefile
new file mode 100644
index 00000000..5cbd0fb0
--- /dev/null
+++ b/colorbars/Makefile
@@ -0,0 +1,6 @@
+PROG=  colorbars
+MAN=   colorbars.6
+DPADD= ${LIBCURSES}
+LDADD= -lcurses
+
+.include <bsd.prog.mk>
diff --git a/colorbars/colorbars.6 b/colorbars/colorbars.6
new file mode 100644
index 00000000..c7bd5c1e
--- /dev/null
+++ b/colorbars/colorbars.6
@@ -0,0 +1,47 @@
+.\"	$NetBSD: colorbars.6,v 1.1 2012/06/06 00:13:36 christos Exp $
+.\"
+.\" Copyright (c) 2012 Nathanial Sloss <nathanialsloss@yahoo.com.au>
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+.\" PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+.\" POSSIBILITY OF SUCH DAMAGE.
+.\"
+.Dd June 5, 2012
+.Dt COLORBARS 6
+.Os
+.Sh NAME
+.Nm colorbars
+.Nd display ANSI color bars
+.Sh SYNOPSIS
+.Nm
+.Sh DESCRIPTION
+The
+.Nm
+command displays ANSI color bars on a color capable terminal using
+.Xr curses 3 .
+.Sh SEE ALSO
+.Xr curses 3
+.Sh AUTHORS
+Nathanial Sloss
+.Sh HISTORY
+.Nm
+appeared in 
+.Nx 7 .
diff --git a/colorbars/colorbars.c b/colorbars/colorbars.c
new file mode 100644
index 00000000..d3de2a43
--- /dev/null
+++ b/colorbars/colorbars.c
@@ -0,0 +1,124 @@
+/*	$NetBSD: colorbars.c,v 1.1 2012/06/06 00:13:36 christos Exp $	*/
+
+/*-
+ * Copyright (c) 2012 Nathanial Sloss <nathanialsloss@yahoo.com.au>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <sys/cdefs.h>
+__RCSID("$NetBSD: colorbars.c,v 1.1 2012/06/06 00:13:36 christos Exp $");
+
+#include <curses.h>
+#include <stdio.h>
+#include <string.h>
+#include <err.h>
+#include <stdlib.h>
+
+int
+main(void)
+{
+	static struct colorInfo {
+		const char *name;
+		int color;
+	} colorInfo[] = {
+		{ "Black", COLOR_BLACK },
+		{ "Red", COLOR_RED },
+		{ "Green", COLOR_GREEN },
+		{ "Yellow", COLOR_YELLOW },
+		{ "Blue", COLOR_BLUE },
+		{ "Magenta", COLOR_MAGENTA },
+		{ "Cyan", COLOR_CYAN },
+		{ "White", COLOR_WHITE },
+	};
+	size_t lengths[__arraycount(colorInfo)];
+
+	static const size_t numcolors = __arraycount(colorInfo);
+	size_t labelwidth;
+
+	int colorOK;
+	int spacing, offsetx, labeloffsety, labeloffsetx;
+
+	if (!initscr())
+		errx(EXIT_FAILURE, "Cannot initialize curses");
+
+	colorOK = has_colors();
+	if (!colorOK) {
+		endwin();
+		errx(EXIT_FAILURE, "Terminal cannot display color");
+	}
+
+	if (COLS < 45 || LINES < 10) {
+		endwin();
+		errx(EXIT_FAILURE, "Terminal size must be at least 45x10.");
+	}
+
+	spacing = COLS / numcolors;
+	offsetx = (COLS - (spacing * numcolors)) / 2;
+
+
+	start_color();
+
+	labelwidth = 0;
+	for (size_t i = 0; i < numcolors; i++) {
+		lengths[i] = strlen(colorInfo[i].name);
+		if (lengths[i] > labelwidth)
+			labelwidth = lengths[i];
+		init_pair(i, COLOR_WHITE, colorInfo[i].color);
+	}
+
+	labeloffsetx = spacing / 2;
+	labeloffsety = (LINES - 1 - labelwidth) / 2;
+	clear();
+
+	move(0, 0);
+
+	for (size_t i = 0; i < numcolors; i++) {
+		int xoffs = offsetx + spacing * i;
+
+		attrset(COLOR_PAIR(i));
+
+		for (int line = 0; line < LINES - 1; line++)
+			for (int xpos = 0; xpos < spacing; xpos++)
+			       mvprintw(line, xoffs + xpos, " ");
+
+		attrset(COLOR_PAIR(0));
+
+		xoffs += labeloffsetx;
+		for (size_t line = 0; line < lengths[i]; line++)
+			mvprintw(line + labeloffsety, xoffs, "%c",
+			    colorInfo[i].name[line]);
+	}
+
+	attrset(COLOR_PAIR(0));
+
+	mvprintw(LINES - 1, 0, "ANSI Color chart - Press any key to exit: ");
+
+	refresh();
+
+	getch();
+
+	endwin();
+
+	return EXIT_SUCCESS;
+}
+