From 447f21bc3e77d0dd3710df85e028ba7e2f5db236 Mon Sep 17 00:00:00 2001
From: Robert Spalek <robert@ucw.cz>
Date: Wed, 10 Jul 2002 14:47:26 +0000
Subject: [PATCH 1/1] added v?xprintf() functions, they will be used in the
 filter dumper

it is usable, for example, for printf()'ing to anything (like fastbufs)
---
 lib/Makefile |  2 +-
 lib/printf.c | 47 +++++++++++++++++++++++++++++++++++++++++++++++
 lib/printf.h | 17 +++++++++++++++++
 3 files changed, 65 insertions(+), 1 deletion(-)
 create mode 100644 lib/printf.c
 create mode 100644 lib/printf.h

diff --git a/lib/Makefile b/lib/Makefile
index c6ef7e94..631a7437 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -8,7 +8,7 @@ SHLIB_OBJS=alloc.o alloc_str.o ctmatch.o db.o fastbuf.o fb-file.o fb-mem.o lists
 	prime.o random.o realloc.o regex.o timer.o url.o wildmatch.o \
 	wordsplit.o str_ctype.o str_upper.o bucket.o conf.o object.o sorter.o \
 	finger.o proctitle.o ipaccess.o profile.o bitsig.o randomkey.o \
-	hashfunc.o base224.o fb-temp.o
+	hashfunc.o base224.o fb-temp.o printf.o
 
 obj/lib/libsh.a: $(addprefix obj/lib/,$(SHLIB_OBJS)) $(CUSTOM_MODULES)
 
diff --git a/lib/printf.c b/lib/printf.c
new file mode 100644
index 00000000..f8c801f0
--- /dev/null
+++ b/lib/printf.c
@@ -0,0 +1,47 @@
+/*
+ *	Sherlock Library -- auto-resizable printf() functions
+ *
+ *	(c) 2002, Robert Spalek <robert@ucw.cz>
+ */
+
+#include "lib/lib.h"
+#include "lib/printf.h"
+
+#include <stdio.h>
+
+byte *
+vxprintf(char *msg, va_list v)
+{
+	static byte *buf = NULL;
+	static int buf_len = 0;
+	int len;
+	if (!buf)
+	{
+		buf_len = 1024;
+		buf = xmalloc(buf_len);
+	}
+	while (1)
+	{
+		len = vsnprintf(buf, buf_len, msg, v);
+		if (len >= 0 && len < buf_len)
+			return buf;
+		else
+		{
+			buf_len *= 2;
+			if (len >= buf_len)
+				buf_len = len + 1;
+			buf = xrealloc(buf, buf_len);
+		}
+	}
+}
+
+byte *
+xprintf(char *msg, ...)
+{
+	byte *txt;
+	va_list v;
+	va_start(v, msg);
+	txt = vxprintf(msg, v);
+	va_end(v);
+	return txt;
+}
diff --git a/lib/printf.h b/lib/printf.h
new file mode 100644
index 00000000..c0d26bcd
--- /dev/null
+++ b/lib/printf.h
@@ -0,0 +1,17 @@
+/*
+ *	Sherlock Library -- auto-resizable printf() functions
+ *
+ *	(c) 2002, Robert Spalek <robert@ucw.cz>
+ */
+
+#ifndef _LIB_PRINTF_H
+#define _LIB_PRINTF_H
+
+#include <stdarg.h>
+
+/* The following functions are NOT reentrable.  */
+
+byte *vxprintf(char *msg, va_list v);
+byte *xprintf(char *msg, ...) __attribute__((format(printf,1,2)));
+
+#endif
-- 
2.39.2