Changeset 02c6dcc in mainline for uspace/app/bdsh/cmds/modules/unalias/unalias.c

Timestamp:

2018-11-30T05:49:20Z (5 years ago)

Author:

Matthieu Riolo <matthieu.riolo@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

d1744fd

Parents:

08bd04c

Message:

correcting help message; implementing -a argument

File:

• uspace/app/bdsh/cmds/modules/unalias/unalias.c (modified) (3 diffs)

uspace/app/bdsh/cmds/modules/unalias/unalias.c

@@ -9 +9 @@
 #include <stdio.h>
 #include <stdlib.h>
+#include <str.h>
 #include <adt/odict.h>
 
@@ -22 +23 @@
 static const char *cmdname = "unalias";
 
+
+
+static void free_alias(odlink_t *alias_link)
+{
+        alias_t *data = odict_get_instance(alias_link, alias_t, odict);
+        odict_remove(alias_link);
+
+        free(data->name);
+        free(data->value);
+        free(data);
+}
+
+
 /* Dispays help for unalias in various levels */
 void help_cmd_unalias(unsigned int level)
 {
-        printf("This is the %s help for '%s'.\n",
-                level ? EXT_HELP : SHORT_HELP, cmdname);
+        printf("`%s' removes an alias or all aliases with -a\n", cmdname);
         return;
 }
+
 
 /* Main entry point for unalias, accepts an array of arguments */
@@ -34 +48 @@
 {
 
+        if(argv[1] == NULL) {
+                help_cmd_unalias(HELP_LONG);
+                return CMD_SUCCESS;
+        }
+
         size_t i;
+        odlink_t *alias_link;
 
-        for(i = 1; argv[i] != NULL; i++) {
-                odlink_t *alias_link = odict_find_eq(&alias_dict, (void*)argv[i], NULL);
+        for (i = 1; argv[i] != NULL; i++) {
+                if (str_cmp(argv[i], "-a") == 0) {
+                        alias_link = odict_first(&alias_dict);
+                        while (alias_link != NULL) {
+                                odlink_t *old_alias_link = alias_link;
+                                alias_link = odict_next(old_alias_link, &alias_dict);
+                                free_alias(old_alias_link);
+                        }
 
-                if(alias_link == NULL) {
+                        return CMD_SUCCESS;
+                }
+
+
+                alias_link = odict_find_eq(&alias_dict, (void*)argv[i], NULL);
+
+                if (alias_link == NULL) {
                         printf("%s: No alias '%s' found\n", cmdname, argv[i]);
                         return CMD_FAILURE;
                 }
 
-                alias_t *data = odict_get_instance(alias_link, alias_t, odict);
-                odict_remove(alias_link);
-
-                free(data->name);
-                free(data->value);
-                free(data);
+                free_alias(alias_link);
         }