new function: xbt_strbuff_printf()

diff --git a/include/xbt/strbuff.h b/include/xbt/strbuff.h
index 2949420..a165786 100644 (file)
--- a/include/xbt/strbuff.h
+++ b/include/xbt/strbuff.h
@@ -42,6 +42,7 @@ XBT_PUBLIC(xbt_strbuff_t) xbt_strbuff_new_from(const char *s);
 XBT_PUBLIC(void) xbt_strbuff_free(xbt_strbuff_t b);
 XBT_PUBLIC(void) xbt_strbuff_free_container(xbt_strbuff_t b);
 XBT_PUBLIC(void) xbt_strbuff_append(xbt_strbuff_t b, const char *toadd);
+XBT_PUBLIC(void) xbt_strbuff_printf(xbt_strbuff_t b, const char *fmt, ...);
 XBT_PUBLIC(void) xbt_strbuff_chomp(xbt_strbuff_t b);
 XBT_PUBLIC(void) xbt_strbuff_trim(xbt_strbuff_t b);
 XBT_PUBLIC(void) xbt_strbuff_varsubst(xbt_strbuff_t b, xbt_dict_t patterns);

diff --git a/src/xbt/xbt_strbuff.c b/src/xbt/xbt_strbuff.c
index 0780895..a966f30 100644 (file)
--- a/src/xbt/xbt_strbuff.c
+++ b/src/xbt/xbt_strbuff.c
@@ -7,6 +7,7 @@
  * under the terms of the license (GNU LGPL) which comes with this package. */
 
 #include "xbt/strbuff.h"
+#include <stdarg.h>
 
 #define minimal_increment 512
 
@@ -75,6 +76,17 @@ void xbt_strbuff_append(xbt_strbuff_t b, const char *toadd)
   b->used += addlen;
 }
 
+/** @brief format some content and push it at the end of the buffer */
+void xbt_strbuff_printf(xbt_strbuff_t b, const char *fmt, ...)
+{
+  va_list ap;
+  va_start(ap, fmt);
+  char *data = bvprintf(fmt, ap);
+  xbt_strbuff_append(b, data);
+  xbt_free(data);
+  va_end(ap);
+}
+
 /** @brief Replaces a set of variables by their values
  *
  * @param b buffer to modify