add section reordering to libuci and cli

diff --git a/cli.c b/cli.c
index 25a61f8..0b2a76d 100644 (file)
--- a/cli.c
+++ b/cli.c
@@ -40,6 +40,7 @@ enum {
        CMD_DEL,
        CMD_RENAME,
        CMD_REVERT,
+       CMD_REORDER,
        /* package cmds */
        CMD_SHOW,
        CMD_CHANGES,
@@ -131,6 +132,7 @@ static void uci_usage(void)
                "\tdelete     <config>[.<section[.<option>]]\n"
                "\trename     <config>.<section>[.<option>]=<name>\n"
                "\trevert     <config>[.<section>[.<option>]]\n"
+               "\treorder    <config>.<section>=<position>\n"
                "\n"
                "Options:\n"
                "\t-c <path>  set the search path for config files (default: /etc/config)\n"
@@ -404,7 +406,7 @@ static int uci_do_section_cmd(int cmd, int argc, char **argv)
                return 1;
        }
 
-       if (ptr.value && (cmd != CMD_SET) && (cmd != CMD_ADD_LIST) && (cmd != CMD_RENAME))
+       if (ptr.value && (cmd != CMD_SET) && (cmd != CMD_ADD_LIST) && (cmd != CMD_RENAME) && (cmd != CMD_REORDER))
                return 1;
 
        e = ptr.last;
@@ -439,6 +441,14 @@ static int uci_do_section_cmd(int cmd, int argc, char **argv)
        case CMD_ADD_LIST:
                ret = uci_add_list(ctx, &ptr);
                break;
+       case CMD_REORDER:
+               if (!ptr.s) {
+                       ctx->err = UCI_ERR_NOTFOUND;
+                       cli_perror();
+                       return 1;
+               }
+               ret = uci_reorder_section(ctx, ptr.s, strtoul(ptr.value, NULL, 10));
+               break;
        case CMD_DEL:
                ret = uci_delete(ctx, &ptr);
                break;
@@ -550,6 +560,8 @@ static int uci_cmd(int argc, char **argv)
                cmd = CMD_RENAME;
        else if (!strcasecmp(argv[0], "revert"))
                cmd = CMD_REVERT;
+       else if (!strcasecmp(argv[0], "reorder"))
+               cmd = CMD_REORDER;
        else if (!strcasecmp(argv[0], "del") ||
                 !strcasecmp(argv[0], "delete"))
                cmd = CMD_DEL;
@@ -571,6 +583,7 @@ static int uci_cmd(int argc, char **argv)
                case CMD_DEL:
                case CMD_RENAME:
                case CMD_REVERT:
+               case CMD_REORDER:
                        return uci_do_section_cmd(cmd, argc, argv);
                case CMD_SHOW:
                case CMD_EXPORT:

diff --git a/history.c b/history.c
index e3e19de..ae36217 100644 (file)
--- a/history.c
+++ b/history.c
@@ -93,6 +93,9 @@ static inline int uci_parse_history_tuple(struct uci_context *ctx, char **buf, s
        int c = UCI_CMD_CHANGE;
 
        switch(**buf) {
+       case '^':
+               c = UCI_CMD_REORDER;
+               break;
        case '-':
                c = UCI_CMD_REMOVE;
                break;
@@ -119,6 +122,10 @@ static inline int uci_parse_history_tuple(struct uci_context *ctx, char **buf, s
                goto error;
 
        switch(c) {
+       case UCI_CMD_REORDER:
+               if (!ptr->value || ptr->option)
+                       goto error;
+               break;
        case UCI_CMD_RENAME:
                if (!ptr->value || !uci_validate_name(ptr->value))
                        goto error;
@@ -149,6 +156,12 @@ static void uci_parse_history_line(struct uci_context *ctx, struct uci_package *
                uci_add_history(ctx, &p->saved_history, cmd, ptr.section, ptr.option, ptr.value);
 
        switch(cmd) {
+       case UCI_CMD_REORDER:
+               expand_ptr(ctx, &ptr, true);
+               if (!ptr.s)
+                       UCI_THROW(ctx, UCI_ERR_NOTFOUND);
+               UCI_INTERNAL(uci_reorder_section, ctx, ptr.s, strtoul(ptr.value, NULL, 10));
+               break;
        case UCI_CMD_RENAME:
                UCI_INTERNAL(uci_rename, ctx, &ptr);
                break;
@@ -425,6 +438,9 @@ int uci_save(struct uci_context *ctx, struct uci_package *p)
                case UCI_CMD_ADD:
                        prefix = "+";
                        break;
+               case UCI_CMD_REORDER:
+                       prefix = "^";
+                       break;
                case UCI_CMD_LIST_ADD:
                        prefix = "|";
                        break;

diff --git a/list.c b/list.c
index 9486ffb..adff017 100644 (file)
--- a/list.c
+++ b/list.c
@@ -48,6 +48,20 @@ static inline void uci_list_del(struct uci_list *ptr)
        uci_list_init(ptr);
 }
 
+static inline void uci_list_set_pos(struct uci_list *head, struct uci_list *ptr, int pos)
+{
+       struct uci_list *new_head = head;
+       struct uci_element *p = NULL;
+
+       uci_list_del(ptr);
+       uci_foreach_element(head, p) {
+               new_head = &p->list;
+               if (pos-- <= 0)
+                       break;
+       }
+       uci_list_add(new_head, ptr);
+}
+
 static inline void uci_list_fixup(struct uci_list *ptr)
 {
        ptr->prev->next = ptr;
@@ -533,6 +547,22 @@ int uci_rename(struct uci_context *ctx, struct uci_ptr *ptr)
        return 0;
 }
 
+int uci_reorder_section(struct uci_context *ctx, struct uci_section *s, int pos)
+{
+       struct uci_package *p = s->package;
+       char order[32];
+
+       UCI_HANDLE_ERR(ctx);
+
+       uci_list_set_pos(&s->package->sections, &s->e.list, pos);
+       if (!ctx->internal && p->has_history) {
+               sprintf(order, "%d", pos);
+               uci_add_history(ctx, &p->history, UCI_CMD_REORDER, s->e.name, NULL, order);
+       }
+
+       return 0;
+}
+
 int uci_add_section(struct uci_context *ctx, struct uci_package *p, const char *type, struct uci_section **res)
 {
        bool internal = ctx->internal;

diff --git a/uci.h b/uci.h
index 2ae02b7..a04da29 100644 (file)
--- a/uci.h
+++ b/uci.h
@@ -178,6 +178,14 @@ extern int uci_set(struct uci_context *ctx, struct uci_ptr *ptr);
 extern int uci_add_list(struct uci_context *ctx, struct uci_ptr *ptr);
 
 /**
+ * uci_reorder: Reposition a section
+ * @ctx: uci context
+ * @s: uci section to reposition
+ * @pos: new position in the section list
+ */
+extern int uci_reorder_section(struct uci_context *ctx, struct uci_section *s, int pos);
+
+/**
  * uci_rename: Rename an element
  * @ctx: uci context
  * @ptr: uci pointer (with value)
@@ -389,6 +397,7 @@ enum uci_command {
        UCI_CMD_REMOVE,
        UCI_CMD_CHANGE,
        UCI_CMD_RENAME,
+       UCI_CMD_REORDER,
        UCI_CMD_LIST_ADD,
 };