[Qemu-devel] [RFC PATCH 01/11] util/cutils: add qemu_hexbuf_strdup(), yet another hexdump()

["Philippe Mathieu-Daudé" <f4bug@amsat.org>]

This will be helpful for tracing() API.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
"yet", so probably duplicating a better way to do it :|

 include/qemu/cutils.h |  3 +++
 util/hexdump.c        | 19 +++++++++++++++++++
 2 files changed, 22 insertions(+)

diff --git a/include/qemu/cutils.h b/include/qemu/cutils.h
index f0878eaafa..2966cd5d64 100644
--- a/include/qemu/cutils.h
+++ b/include/qemu/cutils.h
@@ -164,4 +164,7 @@ bool test_buffer_is_zero_next_accel(void);
 int uleb128_encode_small(uint8_t *out, uint32_t n);
 int uleb128_decode_small(const uint8_t *in, uint32_t *n);
 
+char *qemu_hexbuf_strdup(const void *buf, size_t size,
+                         const char *str_hdr, const char *desc_if_empty);
+
 #endif
diff --git a/util/hexdump.c b/util/hexdump.c
index f879ff0ad6..cabf33b2b8 100644
--- a/util/hexdump.c
+++ b/util/hexdump.c
@@ -15,6 +15,7 @@
 
 #include "qemu/osdep.h"
 #include "qemu-common.h"
+#include "qemu/cutils.h"
 
 void qemu_hexdump(const char *buf, FILE *fp, const char *prefix, size_t size)
 {
@@ -47,3 +48,21 @@ void qemu_hexdump(const char *buf, FILE *fp, const char *prefix, size_t size)
         fprintf(fp, "\n");
     }
 }
+
+char *qemu_hexbuf_strdup(const void *buf, size_t size,
+                         const char *str_hdr, const char *desc_if_empty)
+{
+    const uint8_t *u8 = (uint8_t *)buf;
+    GString *s;
+    int i;
+
+    if (!size) {
+        return g_strdup(desc_if_empty ? desc_if_empty : "");
+    }
+    s = g_string_new(str_hdr ? : "");
+    for (i = 0; i < size; i++) {
+        g_string_append_printf(s, "%02x ", u8[i]);
+    }
+
+    return g_string_free(s, FALSE);
+}
-- 
2.15.1