utils

commit: bb1e01c41ce37b9f1e711643a433baeb4dec099b
parent: 810306aec2857fd6970275cbfbe57b558b435658
Author: Haelwenn (lanodan) Monnier <contact@hacktivis.me>
Date:   Mon, 10 Feb 2020 07:18:43 +0100

src/xcd.c: new, a lolcat hexdump

Diffstat:
M
mkfile
3
+++
A
src/xcd.c
51
+++++++++++++++++++++++++++++++++++++++++++++++++++

2 files changed, 54 insertions(+), 0 deletions(-)
diff --git a/mkfile b/mkfile
@@ -24,3 +24,6 @@ bin/&: src/&.c
 
 bin/lolcat: src/lolcat.c
 	$CC $CDEFS $CFLAGS -lm src/lolcat.c -o bin/lolcat
+
+bin/xcd: src/xcd.c
+	$CC $CDEFS $CFLAGS -lm src/xcd.c -o bin/xcd
diff --git a/src/xcd.c b/src/xcd.c
@@ -0,0 +1,51 @@
+// Copyright 2018-2020 Haelwenn (lanodan) Monnier <contact@hacktivis.me>
+// Distributed under the terms of the CC-BY-SA-4.0 license
+
+#include <stdio.h> /* getchar(), putchar(), snprintf(), printf() */
+#include <math.h> /* sin() */
+#include <stdint.h>
+
+void rainbow(double freq, int i) {
+	uint8_t red, green, blue;
+	double pi = 3.14159;
+
+	red = sin(freq*i + 0) * 127 + 128;
+	green = sin(freq*i + 2*pi/3) * 127 + 128;
+	blue = sin(freq*i + 4*pi/3) * 127 + 128;
+
+	printf("[38;2;%02d;%02d;%02dm", red, green, blue);
+	//printf("[48;2;%02d;%02d;%02dm", red, green, blue);
+	// TODO: Replace to sprintf?
+}
+
+int main(void) {
+	int cols = 0, bytes = 0;
+	double freq = 0.2;
+	char c;
+
+	printf("");
+
+	rainbow(freq, bytes);
+	printf("%08x ", bytes);
+	while((c = getc(stdin)) != EOF)
+	{
+		if(cols >= 16) {
+			cols = 0;
+			rainbow(freq, bytes);
+			printf("\n%08x ", bytes);
+		} else {
+			if(cols > 0 && ((cols % 2) == 0)) printf(" ");
+			if(cols > 0 && ((cols % 8) == 0)) printf(" ");
+		}
+
+		rainbow(freq, c);
+		printf("%02X", c);
+		cols++;
+		bytes++;
+	}
+
+	rainbow(freq, bytes);
+	printf("\n%08x\n", bytes);
+
+	return 0;
+}