From 1ffd0c0ac8da565ef6087782d84b2b61bfb9c19a Mon Sep 17 00:00:00 2001
From: Pavel Pisa <pisa@cmp.felk.cvut.cz>
Date: Sun, 19 Feb 2012 16:58:37 +0100
Subject: [PATCH] uLUt: Function to append printf formatted text to dbuff moved
 to common library.

Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
---
 ulut/Makefile.omk     |  6 +++---
 ulut/ul_dbuffprintf.c | 37 +++++++++++++++++++++++++++++++++++++
 ulut/ul_dbuffprintf.h | 10 ++++++++++
 3 files changed, 50 insertions(+), 3 deletions(-)
 create mode 100644 ulut/ul_dbuffprintf.c
 create mode 100644 ulut/ul_dbuffprintf.h

diff --git a/ulut/Makefile.omk b/ulut/Makefile.omk
index a2680e0..d93c4df 100644
--- a/ulut/Makefile.omk
+++ b/ulut/Makefile.omk
@@ -15,7 +15,7 @@ ulut_HEADERS  = ul_dbuff.h ul_gavl.h ul_gavlcust.h \
 	       ul_list.h ul_listbase.h ul_utdefs.h ul_utmalloc.h \
 	       ul_uniqid.h ul_dbufflog.h ul_log.h ul_logbase.h \
 	       ul_logreg.h ul_cbuff.h ul_dqfifo.h ul_hashtab.h \
-	       ul_hashtabcust.h
+	       ul_hashtabcust.h ul_dbuffprintf.h
 
 ifneq ($(CONFIG_OC_ULUTMINIMAL),y)
 ulut_HEADERS  += ul_evcbase.h
@@ -41,11 +41,11 @@ ulut_SOURCES = ul_dbufbase.c ul_dbufmore.c ul_gsa.c ul_gsacust.c \
 	       ul_gavlprim.c ul_hashtabprim.c ul_hptree.c \
 	       ul_htimer.c ul_htimbase.c ul_htimroot.c \
 	       ul_htimdefault.c ul_dbufflog.c ul_logbase.c \
-	       ul_cbuff.c
+	       ul_cbuff.c ul_dbuffprintf.c
 
 ifneq ($(CONFIG_OC_ULUTMINIMAL),y)
 ulut_SOURCES  += ul_evcbase.c ul_gavl.c ul_htimmstime.c ul_logreg.c \
-		 ul_uniqid.c 
+		 ul_uniqid.c
 endif
 
 lib_LOADLIBES = ulut
diff --git a/ulut/ul_dbuffprintf.c b/ulut/ul_dbuffprintf.c
new file mode 100644
index 0000000..33e440d
--- /dev/null
+++ b/ulut/ul_dbuffprintf.c
@@ -0,0 +1,37 @@
+#include <stdarg.h>
+#include <stdio.h>
+#include "ul_dbuff.h"
+#include "ul_dbuffprintf.h"
+
+int ul_dbuff_printf(ul_dbuff_t *dbuf, const char *format, ...)
+{
+  int len;
+  va_list ap;
+  va_start(ap, format);
+  len = ul_dbuff_vprintf(dbuf, format, ap);
+  va_end(ap);
+  return len;
+}
+
+int ul_dbuff_vprintf(ul_dbuff_t *dbuf, const char *format, va_list ap)
+{
+  int space = dbuf->capacity - dbuf->len;
+  int len, pos;
+  va_list aq;
+
+  va_copy(aq, ap);
+  pos = dbuf->len;
+  len = vsnprintf((char*)dbuf->data + pos, space, format, ap);
+  if(len >= space) {
+    ul_dbuff_set_len(dbuf, pos + len + 2);
+    if(dbuf->capacity > pos) {
+      space = dbuf->capacity - pos;
+      len = vsnprintf((char*)dbuf->data + pos, space, format, aq);
+    }
+  }
+  va_end(aq);
+  dbuf->len = pos + len;
+  if(dbuf->len > dbuf->capacity)
+    dbuf->len = dbuf->capacity;
+  return len;
+}
diff --git a/ulut/ul_dbuffprintf.h b/ulut/ul_dbuffprintf.h
new file mode 100644
index 0000000..9f31374
--- /dev/null
+++ b/ulut/ul_dbuffprintf.h
@@ -0,0 +1,10 @@
+#ifndef _UL_DBUFF_PRINTF_H
+#define _UL_DBUFF_PRINTF_H
+
+#include <stdarg.h>
+#include <ul_dbuff.h>
+
+int ul_dbuff_printf(ul_dbuff_t *dbuf, const char *format, ...);
+int ul_dbuff_vprintf(ul_dbuff_t *dbuf, const char *format, va_list ap);
+
+#endif /*_UL_DBUFF_PRINTF_H*/
-- 
2.39.2