1 files changed, 88 insertions, 0 deletions
diff --git a/src/misc.c b/src/misc.c
new file mode 100644
index 0000000..2eec3c2
--- /dev/null
+++ b/src/misc.c
@@ -0,0 +1,88 @@
+/*
+ *	Miscellaneous functions
+ *	Copyright Jan Engelhardt, 1999-2010
+ *
+ *	This file is part of libHX. libHX is free software; you can
+ *	redistribute it and/or modify it under the terms of the GNU Lesser
+ *	General Public License as published by the Free Software Foundation;
+ *	either version 2.1 or (at your option) any later version.
+ */
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <libHX/ctype_helper.h>
+#include <libHX/misc.h>
+#include "internal.h"
+
+EXPORT_SYMBOL int HX_ffs(unsigned long n)
+{
+	int s = 0;
+	if (n == 0)
+		return -1;
+	while ((n >>= 1) >= 1)
+		++s;
+	return s;
+}
+
+EXPORT_SYMBOL int HX_fls(unsigned long n)
+{
+	int i;
+	for (i = 31; i >= 0; --i)
+		if (n & (1 << i))
+			return i;
+	return -1;
+}
+
+static __inline__ void hexdump_ascii(FILE *fp, unsigned char c, bool tty)
+{
+	static const unsigned char ct_char[] = "31", up_char[] = "34";
+
+	if (HX_isprint(c))
+		fprintf(fp, "%c", c);
+	else if (tty && c == 0)
+		fprintf(fp, "\e[%sm@\e[0m", up_char); // ]]
+	else if (tty && c < 32)
+		fprintf(fp, "\e[%sm%c\e[0m", ct_char, '@' + c); // ]]
+	else if (tty)
+		fprintf(fp, "\e[%sm.\e[0m", up_char); // ]]
+	else
+		fprintf(fp, ".");
+}
+
+EXPORT_SYMBOL void HX_hexdump(FILE *fp, const void *vptr, unsigned int len)
+{
+	const unsigned char *ptr = vptr;
+	unsigned int i, j;
+	bool tty = isatty(fileno(fp));
+
+	fprintf(fp, "Dumping %u bytes\n", len);
+	for (i = 0; i < len / 16; ++i) {
+		fprintf(fp, "%04x | ", i * 16);
+		for (j = 0; j < 16; ++j)
+			fprintf(fp, "%02x%c", *ptr++, (j == 7) ? '-' : ' ');
+		ptr -= 16;
+		fprintf(fp, "| ");
+		for (j = 0; j < 16; ++j)
+			hexdump_ascii(fp, *ptr++, tty);
+		fprintf(fp, "\n");
+	}
+	fprintf(fp, "%04x | ", i * 16);
+	len -= i * 16;
+	for (i = 0; i < len; ++i)
+		fprintf(fp, "%02x%c", ptr[i], (i == 7) ? '-' : ' ');
+	for (; i < 16; ++i)
+		fprintf(fp, "   ");
+	fprintf(fp, "| ");
+	for (i = 0; i < len; ++i)
+		hexdump_ascii(fp, *ptr++, tty);
+	fprintf(fp, "\n");
+}
+
+EXPORT_SYMBOL void HX_zvecfree(char **args)
+{
+	char **travp;
+	for (travp = args; *travp != NULL; ++travp)
+		free(*travp);
+	free(args);
+}