Changeset 966f753 in mainline for uspace/app/bdsh/input.c

Timestamp:

2018-11-30T20:33:12Z (6 years ago)

Author:

Matthieu Riolo <matthieu.riolo@…>

Branches:

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

Children:

a8c09f91

Parents:

a02aa5c

Message:

imlementing nohups for cmd alias

File:

• uspace/app/bdsh/input.c (modified) (5 diffs)

uspace/app/bdsh/input.c

@@ -45 +45 @@
 #include <tinput.h>
 #include <adt/odict.h>
+#include <adt/list.h>
 
 #include "config.h"
@@ -64 +65 @@
 static void print_pipe_usage(void);
 
+typedef struct {
+        link_t alias_hup_link;
+        alias_t *alias;
+} alias_hup_t;
+
+static bool find_alias_hup(alias_t *alias, list_t *alias_hups)
+{
+        list_foreach(*alias_hups, alias_hup_link, alias_hup_t, link) {
+                if (alias == link->alias) {
+                        return true;
+                }
+        }
+
+        return false;
+}
+
 /*
  * Tokenizes input from console, sees if the first word is a built-in, if so
@@ -69 +86 @@
  * the handler
  */
-errno_t process_input(cliuser_t *usr)
+static errno_t process_input_nohup(cliuser_t *usr, list_t *alias_hups)
 {
         token_t *tokens_buf = calloc(WORD_MAX, sizeof(token_t));
@@ -177 +194 @@
         if (alias_link != NULL) {
                 alias_t *data = odict_get_instance(alias_link, alias_t, odict);
-                char *oldLine = usr->line;
-
-                const size_t input_length = str_size(usr->line) - str_size(cmd[0]) + str_size(data->value) + 1;
-                usr->line = (char *)malloc(input_length * sizeof(char));
-                usr->line[0] = '\0';
-
-                unsigned int cmd_replace_index = cmd_token_start;
-                for (i = 0; i < tokens_length; i++) {
-                        if (i == cmd_replace_index) {
-                                //if there is a pipe symbol than cmd_token_start will point at the SPACE after the pipe symbol
-                                if (tokens[i].type == TOKTYPE_SPACE) {
-                                        cmd_replace_index++;
+                //check if the alias already has been resolved once
+                if (!find_alias_hup(data, alias_hups)) {
+                        alias_hup_t *hup = (alias_hup_t *)calloc(1, sizeof(hup));
+                        hup->alias = data;
+                        list_append(&hup->alias_hup_link, alias_hups);
+
+                        char *oldLine = usr->line;
+                        const size_t input_length = str_size(usr->line) - str_size(cmd[0]) + str_size(data->value) + 1;
+                        usr->line = (char *)malloc(input_length * sizeof(char));
+                        usr->line[0] = '\0';
+
+                        unsigned int cmd_replace_index = cmd_token_start;
+                        for (i = 0; i < tokens_length; i++) {
+                                if (i == cmd_replace_index) {
+                                        //if there is a pipe symbol than cmd_token_start will point at the SPACE after the pipe symbol
+                                        if (tokens[i].type == TOKTYPE_SPACE) {
+                                                cmd_replace_index++;
+                                                str_append(usr->line, input_length, tokens[i].text);
+                                                continue;
+                                        }
+
+                                        str_append(usr->line, input_length, data->value);
+                                } else {
                                         str_append(usr->line, input_length, tokens[i].text);
-                                        continue;
                                 }
-
-                                str_append(usr->line, input_length, data->value);
-                        } else {
-                                str_append(usr->line, input_length, tokens[i].text);
                         }
-                }
-
-                //reprocess input after string replace
-                rc = process_input(usr);
-                usr->line = oldLine;
-                goto finit;
+
+                        //reprocess input after string replace
+                        rc = process_input_nohup(usr, alias_hups);
+                        usr->line = oldLine;
+                        goto finit;
+                }
         }
 
@@ -259 +282 @@
 }
 
+errno_t process_input(cliuser_t *usr)
+{
+        list_t alias_hups;
+        list_initialize(&alias_hups);
+
+        errno_t rc = process_input_nohup(usr, &alias_hups);
+
+        list_foreach_safe(alias_hups, cur_link, next_link) {
+                alias_hup_t *cur_item = list_get_instance(cur_link, alias_hup_t, alias_hup_link);
+                free(cur_item);
+        }
+
+        return rc;
+}
+
 void print_pipe_usage(void)
 {