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-rw-r--r--libglusterfs/src/strfd.c91
1 files changed, 91 insertions, 0 deletions
diff --git a/libglusterfs/src/strfd.c b/libglusterfs/src/strfd.c
new file mode 100644
index 0000000..8c97670
--- /dev/null
+++ b/libglusterfs/src/strfd.c
@@ -0,0 +1,91 @@
+/*
+ Copyright (c) 2014 Red Hat, Inc. <http://www.redhat.com>
+ This file is part of GlusterFS.
+
+ This file is licensed to you under your choice of the GNU Lesser
+ General Public License, version 3 or any later version (LGPLv3 or
+ later), or the GNU General Public License, version 2 (GPLv2), in all
+ cases as published by the Free Software Foundation.
+*/
+
+#ifndef _CONFIG_H
+#define _CONFIG_H
+#include "config.h"
+#endif
+
+#include <stdarg.h>
+
+#include "mem-types.h"
+#include "mem-pool.h"
+#include "strfd.h"
+#include "common-utils.h"
+
+
+strfd_t *
+strfd_open ()
+{
+ strfd_t *strfd = NULL;
+
+ strfd = GF_CALLOC(1, sizeof(*strfd), gf_common_mt_strfd_t);
+
+ return strfd;
+}
+
+
+int
+strprintf (strfd_t *strfd, const char *fmt, ...)
+{
+ va_list ap;
+ char *str = NULL;
+ int size = 0;
+
+ va_start (ap, fmt);
+
+ size = vasprintf (&str, fmt, ap);
+
+ if (size < 0)
+ return size;
+
+ if (!strfd->alloc_size) {
+ strfd->data = GF_CALLOC (max(size + 1, 4096), 1,
+ gf_common_mt_strfd_data_t);
+ if (!strfd->data) {
+ free (str); /* NOT GF_FREE */
+ return -1;
+ }
+ strfd->alloc_size = max(size + 1, 4096);
+ }
+
+ if (strfd->alloc_size <= (strfd->size + size)) {
+ char *tmp_ptr = NULL;
+ int new_size = max ((strfd->alloc_size * 2),
+ gf_roundup_next_power_of_two (strfd->size + size + 1));
+ tmp_ptr = GF_REALLOC (strfd->data, new_size);
+ if (!tmp_ptr) {
+ free (str); /* NOT GF_FREE */
+ return -1;
+ }
+ strfd->alloc_size = new_size;
+ strfd->data = tmp_ptr;
+ }
+
+ // Copy the trailing '\0', but do not account for it in ->size.
+ // This allows safe use of strfd->data as a string.
+ memcpy (strfd->data + strfd->size, str, size + 1);
+ strfd->size += size;
+
+ free (str); /* NOT GF_FREE */
+
+ return size;
+}
+
+
+int
+strfd_close (strfd_t *strfd)
+{
+ GF_FREE (strfd->data);
+ GF_FREE (strfd);
+
+ return 0;
+}
+