1 files changed, 97 insertions, 0 deletions
diff --git a/lib/libc/stdio/xprintf_hexdump.c b/lib/libc/stdio/xprintf_hexdump.c
new file mode 100644
index 0000000..a2956ba
--- /dev/null
+++ b/lib/libc/stdio/xprintf_hexdump.c
@@ -0,0 +1,97 @@
+/*-
+ * Copyright (c) 2005 Poul-Henning Kamp
+ * 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 AUTHOR 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 AUTHOR 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.
+ *
+ * $FreeBSD$
+ */
+
+#include <namespace.h>
+#include <stdio.h>
+#include <wchar.h>
+#include <stdint.h>
+#include <assert.h>
+#include <sys/time.h>
+#include "printf.h"
+
+int
+__printf_arginfo_hexdump(const struct printf_info *pi, size_t n, int *argt)
+{
+
+	assert(n >= 2);
+	argt[0] = PA_POINTER;
+	argt[1] = PA_INT;
+	return (2);
+}
+
+int
+__printf_render_hexdump(struct __printf_io *io, const struct printf_info *pi, const void *const *arg)
+{
+	unsigned char *p;
+	unsigned u, l, j, a;
+	char buf[100], *q;
+	int ret;
+
+	if (pi->width > 0 && pi->width < 16)
+		l = pi->width;
+	else
+		l = 16;
+	p = *((unsigned char **)arg[0]);
+	u = *((unsigned *)arg[1]);
+
+	ret = 0;
+	a = 0;
+	while (u > 0) {
+		q = buf;
+		if (pi->showsign)
+			q += sprintf(q, " %04x", a);
+		for (j = 0; j < l && j < u; j++)
+			q += sprintf(q, " %02x", p[j]);
+		if (pi->alt) {
+			for (; j < l; j++)
+				q += sprintf(q, "   ");
+			q += sprintf(q, "  |");
+			for (j = 0; j < l && j < u; j++) {
+				if (p[j] < ' ' || p[j] > '~')
+					*q++ = '.';
+				else
+					*q++ = p[j];
+			}
+			for (; j < l; j++)
+				*q++ = ' ';
+			*q++ = '|';
+		}
+		if (l < u)
+			j = l;
+		else
+			j = u;
+		p += j;
+		u -= j;
+		a += j;
+		if (u > 0)
+			*q++ = '\n';
+		ret += __printf_puts(io, buf + 1, q - (buf + 1));
+		__printf_flush(io);
+	}
+	return (ret);
+}