[PATCH V3 1/4] util: strList_from_string

[Steve Sistare <steven.sistare@oracle.com>]

Generalize hmp_split_at_comma() to take any delimiter string, rename
as strList_from_string(), and move it to util/strList.c.

No functional change.

Signed-off-by: Steve Sistare <steven.sistare@oracle.com>
---
 include/monitor/hmp.h  |  1 -
 include/qemu/strList.h | 24 ++++++++++++++++++++++++
 monitor/hmp-cmds.c     | 19 -------------------
 net/net-hmp-cmds.c     |  3 ++-
 stats/stats-hmp-cmds.c |  3 ++-
 util/meson.build       |  1 +
 util/strList.c         | 24 ++++++++++++++++++++++++
 7 files changed, 53 insertions(+), 22 deletions(-)
 create mode 100644 include/qemu/strList.h
 create mode 100644 util/strList.c

diff --git a/include/monitor/hmp.h b/include/monitor/hmp.h
index 13f9a2d..2df661e 100644
--- a/include/monitor/hmp.h
+++ b/include/monitor/hmp.h
@@ -19,7 +19,6 @@
 
 bool hmp_handle_error(Monitor *mon, Error *err);
 void hmp_help_cmd(Monitor *mon, const char *name);
-strList *hmp_split_at_comma(const char *str);
 
 void hmp_info_name(Monitor *mon, const QDict *qdict);
 void hmp_info_version(Monitor *mon, const QDict *qdict);
diff --git a/include/qemu/strList.h b/include/qemu/strList.h
new file mode 100644
index 0000000..1f4c11d
--- /dev/null
+++ b/include/qemu/strList.h
@@ -0,0 +1,24 @@
+/*
+ * Copyright (c) 2022, 2023 Oracle and/or its affiliates.
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#ifndef QEMU_STR_LIST_H
+#define QEMU_STR_LIST_H
+
+#include "qapi/qapi-builtin-types.h"
+
+/*
+ * Break @in into a strList using the delimiter string @delim.
+ * The delimiter is not included in the result.
+ * Return NULL if @in is NULL or an empty string.
+ * A leading, trailing, or consecutive delimiter produces an
+ * empty string at that position in the output.
+ * All strings are g_strdup'd, and the result can be freed
+ * using qapi_free_strList.
+ */
+strList *strList_from_string(const char *in, const char *delim);
+
+#endif
diff --git a/monitor/hmp-cmds.c b/monitor/hmp-cmds.c
index 6c559b4..1e833f9 100644
--- a/monitor/hmp-cmds.c
+++ b/monitor/hmp-cmds.c
@@ -39,25 +39,6 @@ bool hmp_handle_error(Monitor *mon, Error *err)
     return false;
 }
 
-/*
- * Split @str at comma.
- * A null @str defaults to "".
- */
-strList *hmp_split_at_comma(const char *str)
-{
-    char **split = g_strsplit(str ?: "", ",", -1);
-    strList *res = NULL;
-    strList **tail = &res;
-    int i;
-
-    for (i = 0; split[i]; i++) {
-        QAPI_LIST_APPEND(tail, split[i]);
-    }
-
-    g_free(split);
-    return res;
-}
-
 void hmp_info_name(Monitor *mon, const QDict *qdict)
 {
     NameInfo *info;
diff --git a/net/net-hmp-cmds.c b/net/net-hmp-cmds.c
index 41d326b..e893801 100644
--- a/net/net-hmp-cmds.c
+++ b/net/net-hmp-cmds.c
@@ -26,6 +26,7 @@
 #include "qemu/config-file.h"
 #include "qemu/help_option.h"
 #include "qemu/option.h"
+#include "qemu/strList.h"
 
 void hmp_info_network(Monitor *mon, const QDict *qdict)
 {
@@ -72,7 +73,7 @@ void hmp_announce_self(Monitor *mon, const QDict *qdict)
                                             migrate_announce_params());
 
     qapi_free_strList(params->interfaces);
-    params->interfaces = hmp_split_at_comma(interfaces_str);
+    params->interfaces = strList_from_string(interfaces_str, ",");
     params->has_interfaces = params->interfaces != NULL;
     params->id = g_strdup(id);
     qmp_announce_self(params, NULL);
diff --git a/stats/stats-hmp-cmds.c b/stats/stats-hmp-cmds.c
index 1f91bf8..428c0e6 100644
--- a/stats/stats-hmp-cmds.c
+++ b/stats/stats-hmp-cmds.c
@@ -10,6 +10,7 @@
 #include "monitor/hmp.h"
 #include "monitor/monitor.h"
 #include "qemu/cutils.h"
+#include "qemu/strList.h"
 #include "hw/core/cpu.h"
 #include "qapi/qmp/qdict.h"
 #include "qapi/error.h"
@@ -176,7 +177,7 @@ static StatsFilter *stats_filter(StatsTarget target, const char *names,
             request->provider = provider_idx;
             if (names && !g_str_equal(names, "*")) {
                 request->has_names = true;
-                request->names = hmp_split_at_comma(names);
+                request->names = strList_from_string(names, ",");
             }
             QAPI_LIST_PREPEND(request_list, request);
         }
diff --git a/util/meson.build b/util/meson.build
index 3a93071..960f233 100644
--- a/util/meson.build
+++ b/util/meson.build
@@ -1,4 +1,5 @@
 util_ss.add(files('osdep.c', 'cutils.c', 'unicode.c', 'qemu-timer-common.c'))
+util_ss.add(files('strList.c'))
 util_ss.add(files('thread-context.c'), numa)
 if not config_host_data.get('CONFIG_ATOMIC64')
   util_ss.add(files('atomic64.c'))
diff --git a/util/strList.c b/util/strList.c
new file mode 100644
index 0000000..217746e
--- /dev/null
+++ b/util/strList.c
@@ -0,0 +1,24 @@
+/*
+ * Copyright (c) 2023 Red Hat, Inc.
+ * Copyright (c) 2022, 2023 Oracle and/or its affiliates.
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#include "qemu/osdep.h"
+#include "qemu/strList.h"
+
+strList *strList_from_string(const char *str, const char *delim)
+{
+    g_autofree char **split = g_strsplit(str ?: "", delim, -1);
+    strList *res = NULL;
+    strList **tail = &res;
+    int i;
+
+    for (i = 0; split[i]; i++) {
+        QAPI_LIST_APPEND(tail, split[i]);
+    }
+
+    return res;
+}
-- 
1.8.3.1