[Qemu-devel] [PATCH v21 06/25] add convert functions between QEMUOptionParameter to QemuOpts

[Chunyan Liu <cyliu@suse.com>]

Add two temp convert functions between QEMUOptionParameter to QemuOpts, so that
next patch can use it. It will simplify next patch for easier review.

Signed-off-by: Chunyan Liu <cyliu@suse.com>
---
changes to v20:
  * fix Eric's comments:
    - use g_strdup instead of strdup

 include/qemu/option.h |    2 +
 util/qemu-option.c    |  105 +++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 107 insertions(+), 0 deletions(-)

diff --git a/include/qemu/option.h b/include/qemu/option.h
index 62f0432..c3e85bd 100644
--- a/include/qemu/option.h
+++ b/include/qemu/option.h
@@ -168,4 +168,6 @@ int qemu_opts_foreach(QemuOptsList *list, qemu_opts_loopfunc func, void *opaque,
 QemuOptsList *qemu_opts_append(QemuOptsList *dst, QemuOptsList *list);
 void qemu_opts_free(QemuOptsList *list);
 void qemu_opts_print_help(QemuOptsList *list);
+QEMUOptionParameter *opts_to_params(QemuOpts *opts);
+QemuOptsList *params_to_opts(QEMUOptionParameter *list);
 #endif
diff --git a/util/qemu-option.c b/util/qemu-option.c
index 708fafa..c78adca 100644
--- a/util/qemu-option.c
+++ b/util/qemu-option.c
@@ -1415,3 +1415,108 @@ void qemu_opts_print_help(QemuOptsList *list)
                list->desc[i].help : "");
     }
 }
+
+/* convert QEMUOptionParameter to QemuOpts */
+QemuOptsList *params_to_opts(QEMUOptionParameter *list)
+{
+    QemuOptsList *opts = NULL;
+    size_t num_opts, i = 0;
+
+    if (!list) {
+        return NULL;
+    }
+
+    num_opts = count_option_parameters(list);
+    opts = g_malloc0(sizeof(QemuOptsList) +
+                     (num_opts + 1) * sizeof(QemuOptDesc));
+    QTAILQ_INIT(&opts->head);
+    opts->desc[i].name = NULL;
+
+    while (list && list->name) {
+        opts->desc[i].name = g_strdup(list->name);
+        opts->desc[i].help = g_strdup(list->help);
+        switch (list->type) {
+        case OPT_FLAG:
+            opts->desc[i].type = QEMU_OPT_BOOL;
+            opts->desc[i].def_value_str = list->value.n ? "on" : "off";
+            break;
+
+        case OPT_NUMBER:
+            opts->desc[i].type = QEMU_OPT_NUMBER;
+            if (list->value.n) {
+                opts->desc[i].def_value_str =
+                    g_strdup_printf("%" PRIu64, list->value.n);
+            }
+            break;
+
+        case OPT_SIZE:
+            opts->desc[i].type = QEMU_OPT_SIZE;
+            if (list->value.n) {
+                opts->desc[i].def_value_str =
+                    g_strdup_printf("%" PRIu64, list->value.n);
+            }
+            break;
+
+        case OPT_STRING:
+            opts->desc[i].type = QEMU_OPT_STRING;
+            opts->desc[i].def_value_str = g_strdup(list->value.s);
+            break;
+        }
+
+        i++;
+        list++;
+        opts->desc[i].name = NULL;
+    }
+
+    return opts;
+}
+
+QEMUOptionParameter *opts_to_params(QemuOpts *opts)
+{
+    QEMUOptionParameter *dest = NULL;
+    QemuOptDesc *desc;
+    size_t num_opts, i = 0;
+    const char *tmp;
+
+    if (!opts || !opts->list || !opts->list->desc) {
+        return NULL;
+    }
+
+    num_opts = count_opts_list(opts->list);
+    dest = g_malloc0((num_opts + 1) * sizeof(QEMUOptionParameter));
+    dest[i].name = NULL;
+
+    desc = opts->list->desc;
+    while (desc && desc->name) {
+        dest[i].name = g_strdup(desc->name);
+        dest[i].help = g_strdup(desc->help);
+        switch (desc->type) {
+        case QEMU_OPT_STRING:
+            dest[i].type = OPT_STRING;
+            tmp = qemu_opt_get(opts, desc->name);
+            dest[i].value.s = g_strdup(tmp);
+            break;
+
+        case QEMU_OPT_BOOL:
+            dest[i].type = OPT_FLAG;
+            dest[i].value.n = qemu_opt_get_bool(opts, desc->name, 0) ? 1 : 0;
+            break;
+
+        case QEMU_OPT_NUMBER:
+            dest[i].type = OPT_NUMBER;
+            dest[i].value.n = qemu_opt_get_number(opts, desc->name, 0);
+            break;
+
+        case QEMU_OPT_SIZE:
+            dest[i].type = OPT_SIZE;
+            dest[i].value.n = qemu_opt_get_size(opts, desc->name, 0);
+            break;
+        }
+
+        i++;
+        desc++;
+        dest[i].name = NULL;
+    }
+
+    return dest;
+}
-- 
1.6.0.2