implement overwriting import

diff --git a/cli.c b/cli.c
index 828c7b9..1a478bb 100644 (file)
--- a/cli.c
+++ b/cli.c
@@ -91,7 +91,7 @@ static int package_cmd(int cmd, char *package)
        }
        switch(cmd) {
        case CMD_COMMIT:
-               if (uci_commit(ctx, &p) != UCI_OK)
+               if (uci_commit(ctx, &p, false) != UCI_OK)
                        uci_perror(ctx, appname);
                break;
        case CMD_EXPORT:
@@ -128,8 +128,17 @@ static int uci_do_import(int argc, char **argv)
                        package = NULL;
        }
        ret = uci_import(ctx, input, name, &package, (name != NULL));
-       if ((ret == UCI_OK) && (flags & CLI_FLAG_MERGE)) {
-               ret = uci_save(ctx, package);
+       if (ret == UCI_OK) {
+               if (flags & CLI_FLAG_MERGE) {
+                       ret = uci_save(ctx, package);
+               } else {
+                       struct uci_element *e;
+                       /* loop through all config sections and overwrite existing data */
+                       uci_foreach_element(&ctx->root, e) {
+                               struct uci_package *p = uci_to_package(e);
+                               ret = uci_commit(ctx, &p, true);
+                       }
+               }
        }
 
        if (ret != UCI_OK) {

diff --git a/file.c b/file.c
index 9f47ef2..8e7f0ce 100644 (file)
--- a/file.c
+++ b/file.c
@@ -745,7 +745,8 @@ static void uci_load_history(struct uci_context *ctx, struct uci_package *p, boo
 
        UCI_TRAP_SAVE(ctx, done);
        f = uci_open_stream(ctx, filename, SEEK_SET, flush, false);
-       uci_parse_history(ctx, f, p);
+       if (p)
+               uci_parse_history(ctx, f, p);
        UCI_TRAP_RESTORE(ctx);
 
 done:
@@ -760,6 +761,18 @@ done:
 }
 
 
+static char *uci_config_path(struct uci_context *ctx, const char *name)
+{
+       char *filename;
+
+       if (strchr(name, '/'))
+               UCI_THROW(ctx, UCI_ERR_INVAL);
+       filename = uci_malloc(ctx, strlen(name) + sizeof(UCI_CONFDIR) + 2);
+       sprintf(filename, UCI_CONFDIR "/%s", name);
+
+       return filename;
+}
+
 int uci_load(struct uci_context *ctx, const char *name, struct uci_package **package)
 {
        char *filename;
@@ -783,10 +796,7 @@ int uci_load(struct uci_context *ctx, const char *name, struct uci_package **pac
                break;
        default:
                /* config in /etc/config */
-               if (strchr(name, '/'))
-                       UCI_THROW(ctx, UCI_ERR_INVAL);
-               filename = uci_malloc(ctx, strlen(name) + sizeof(UCI_CONFDIR) + 2);
-               sprintf(filename, UCI_CONFDIR "/%s", name);
+               filename = uci_config_path(ctx, name);
                confdir = true;
                break;
        }
@@ -824,7 +834,7 @@ int uci_save(struct uci_context *ctx, struct uci_package *p)
         * does not modify the uci_package pointer
         */
        if (!p->confdir)
-               return uci_commit(ctx, &p);
+               return uci_commit(ctx, &p, false);
 
        if (uci_list_empty(&p->history))
                return 0;
@@ -866,7 +876,7 @@ done:
        return 0;
 }
 
-int uci_commit(struct uci_context *ctx, struct uci_package **package)
+int uci_commit(struct uci_context *ctx, struct uci_package **package, bool overwrite)
 {
        struct uci_package *p;
        FILE *f = NULL;
@@ -878,7 +888,13 @@ int uci_commit(struct uci_context *ctx, struct uci_package **package)
        p = *package;
 
        UCI_ASSERT(ctx, p != NULL);
-       UCI_ASSERT(ctx, p->path != NULL);
+       if (!p->path) {
+               if (overwrite)
+                       p->path = uci_config_path(ctx, p->e.name);
+               else
+                       UCI_THROW(ctx, UCI_ERR_INVAL);
+       }
+
 
        /* open the config file for writing now, so that it is locked */
        f = uci_open_stream(ctx, p->path, SEEK_SET, true, true);
@@ -886,23 +902,28 @@ int uci_commit(struct uci_context *ctx, struct uci_package **package)
        /* flush unsaved changes and reload from history file */
        UCI_TRAP_SAVE(ctx, done);
        if (p->confdir) {
-               name = uci_strdup(ctx, p->e.name);
-               path = uci_strdup(ctx, p->path);
-               if (!uci_list_empty(&p->history))
-                       UCI_INTERNAL(uci_save, ctx, p);
-               uci_free_package(&p);
-               uci_file_cleanup(ctx);
-               UCI_INTERNAL(uci_import, ctx, f, name, &p, true);
-
-               p->path = path;
-               p->confdir = true;
-               *package = p;
-
-               /* freed together with the uci_package */
-               path = NULL;
-
-               /* check for updated history, just in case */
-               uci_load_history(ctx, p, true);
+               if (!overwrite) {
+                       name = uci_strdup(ctx, p->e.name);
+                       path = uci_strdup(ctx, p->path);
+                       if (!uci_list_empty(&p->history))
+                               UCI_INTERNAL(uci_save, ctx, p);
+                       uci_free_package(&p);
+                       uci_file_cleanup(ctx);
+                       UCI_INTERNAL(uci_import, ctx, f, name, &p, true);
+
+                       p->path = path;
+                       p->confdir = true;
+                       *package = p;
+
+                       /* freed together with the uci_package */
+                       path = NULL;
+
+                       /* check for updated history, just in case */
+                       uci_load_history(ctx, p, true);
+               } else {
+                       /* flush history */
+                       uci_load_history(ctx, NULL, true);
+               }
        }
 
        rewind(f);

diff --git a/uci.h b/uci.h
index 6b5de9a..574a384 100644 (file)
--- a/uci.h
+++ b/uci.h
@@ -214,11 +214,12 @@ extern int uci_save(struct uci_context *ctx, struct uci_package *p);
  * uci_commit: commit changes to a package
  * @ctx: uci context
  * @p: uci_package struct pointer
+ * @overwrite: overwrite existing config data and flush history
  *
  * committing may reload the whole uci_package data,
  * the supplied pointer is updated accordingly
  */
-extern int uci_commit(struct uci_context *ctx, struct uci_package **p);
+extern int uci_commit(struct uci_context *ctx, struct uci_package **p, bool overwrite);
 
 /**
  * uci_list_configs: List available uci config files