add missing include statement
[project/uci.git] / cli.c
diff --git a/cli.c b/cli.c
index bfbb92c..3188bd1 100644 (file)
--- a/cli.c
+++ b/cli.c
@@ -1,4 +1,5 @@
 /*
+ * cli - Command Line Interface for the Unified Configuration Interface
  * Copyright (C) 2008 Felix Fietkau <nbd@openwrt.org>
  *
  * This program is free software; you can redistribute it and/or modify
  * GNU General Public License for more details.
  */
 #include <strings.h>
+#include <string.h>
 #include <stdlib.h>
 #include <unistd.h>
 #include "uci.h"
 
-static const char *appname = "uci";
+#define MAX_ARGS       4 /* max command line arguments for batch mode */
+
+static const char *appname;
 static enum {
        CLI_FLAG_MERGE =    (1 << 0),
        CLI_FLAG_QUIET =    (1 << 1),
        CLI_FLAG_NOCOMMIT = (1 << 2),
+       CLI_FLAG_BATCH =    (1 << 3),
 } flags;
+
 static FILE *input;
 
 static struct uci_context *ctx;
@@ -30,24 +36,32 @@ enum {
        CMD_SET,
        CMD_DEL,
        CMD_RENAME,
+       CMD_REVERT,
        /* package cmds */
        CMD_SHOW,
-       CMD_IMPORT,
+       CMD_CHANGES,
        CMD_EXPORT,
        CMD_COMMIT,
+       /* other cmds */
+       CMD_IMPORT,
+       CMD_HELP,
 };
 
-static void uci_usage(int argc, char **argv)
+static int uci_cmd(int argc, char **argv);
+
+static void uci_usage(void)
 {
        fprintf(stderr,
                "Usage: %s [<options>] <command> [<arguments>]\n\n"
                "Commands:\n"
+               "\tbatch\n"
                "\texport     [<config>]\n"
                "\timport     [<config>]\n"
                "\tshow       [<config>[.<section>[.<option>]]]\n"
                "\tget        <config>.<section>[.<option>]\n"
                "\tset        <config>.<section>[.<option>]=<value>\n"
                "\trename     <config>.<section>[.<option>]=<name>\n"
+               "\trevert     <config>[.<section>[.<option>]]\n"
                "\n"
                "Options:\n"
                "\t-f <file>  use <file> as input instead of stdin\n"
@@ -60,9 +74,8 @@ static void uci_usage(int argc, char **argv)
                "\t-s         force strict mode (stop on parser errors, default)\n"
                "\t-S         disable strict mode\n"
                "\n",
-               argv[0]
+               appname
        );
-       exit(255);
 }
 
 static void cli_perror(void)
@@ -95,18 +108,45 @@ static void uci_show_package(struct uci_package *p)
        }
 }
 
+static void uci_show_changes(struct uci_package *p)
+{
+       struct uci_element *e;
+
+       uci_foreach_element(&p->saved_history, e) {
+               struct uci_history *h = uci_to_history(e);
+
+               if (h->cmd == UCI_CMD_REMOVE)
+                       printf("-");
+               printf("%s.%s", p->e.name, h->section);
+               if (e->name)
+                       printf(".%s", e->name);
+               if (h->cmd != UCI_CMD_REMOVE)
+                       printf("=%s", h->value);
+               printf("\n");
+       }
+}
 
 static int package_cmd(int cmd, char *package)
 {
        struct uci_package *p = NULL;
+       int ret;
 
-       if (uci_load(ctx, package, &p) != UCI_OK) {
+       if (cmd == CMD_CHANGES)
+               ctx->flags |= UCI_FLAG_SAVED_HISTORY;
+       ret = uci_load(ctx, package, &p);
+       if (cmd == CMD_CHANGES)
+               ctx->flags &= ~UCI_FLAG_SAVED_HISTORY;
+
+       if (ret != UCI_OK) {
                cli_perror();
                return 1;
        }
        if (!p)
                return 0;
        switch(cmd) {
+       case CMD_CHANGES:
+               uci_show_changes(p);
+               break;
        case CMD_COMMIT:
                if (flags & CLI_FLAG_NOCOMMIT)
                        return 0;
@@ -244,6 +284,9 @@ static int uci_do_section_cmd(int cmd, int argc, char **argv)
        case CMD_RENAME:
                ret = uci_rename(ctx, p, section, option, value);
                break;
+       case CMD_REVERT:
+               ret = uci_revert(ctx, &p, section, option);
+               break;
        case CMD_SET:
                ret = uci_set(ctx, p, section, option, value);
                break;
@@ -253,7 +296,7 @@ static int uci_do_section_cmd(int cmd, int argc, char **argv)
        }
 
        /* no save necessary for get */
-       if (cmd == CMD_GET)
+       if ((cmd == CMD_GET) || (cmd == CMD_REVERT))
                return 0;
 
        /* save changes, but don't commit them yet */
@@ -268,12 +311,81 @@ static int uci_do_section_cmd(int cmd, int argc, char **argv)
        return 0;
 }
 
+static int uci_batch_cmd(void)
+{
+       char *argv[MAX_ARGS];
+       char *str = NULL;
+       int ret = 0;
+       int i, j;
+
+       for(i = 0; i <= MAX_ARGS; i++) {
+               if (i == MAX_ARGS) {
+                       fprintf(stderr, "Too many arguments\n");
+                       return 1;
+               }
+               argv[i] = NULL;
+               if ((ret = uci_parse_argument(ctx, input, &str, &argv[i])) != UCI_OK) {
+                       cli_perror();
+                       i = 0;
+                       break;
+               }
+               if (!argv[i][0])
+                       break;
+               argv[i] = strdup(argv[i]);
+               if (!argv[i]) {
+                       perror("uci");
+                       return 1;
+               }
+       }
+       argv[i] = NULL;
+
+       if (i > 0) {
+               if (!strcasecmp(argv[0], "exit"))
+                       return 254;
+               ret = uci_cmd(i, argv);
+       } else
+               return 0;
+
+       for (j = 0; j < i; j++) {
+               if (argv[j])
+                       free(argv[j]);
+       }
+
+       return ret;
+}
+
+static int uci_batch(void)
+{
+       int ret = 0;
+
+       while (!feof(input)) {
+               struct uci_element *e, *tmp;
+
+               ret = uci_batch_cmd();
+               if (ret == 254)
+                       return 0;
+               else if (ret == 255)
+                       fprintf(stderr, "Unknown command\n");
+
+               /* clean up */
+               uci_cleanup(ctx);
+               uci_foreach_element_safe(&ctx->root, tmp, e) {
+                       uci_unload(ctx, uci_to_package(e));
+               }
+       }
+       return 0;
+}
+
 static int uci_cmd(int argc, char **argv)
 {
        int cmd = 0;
 
-       if (!strcasecmp(argv[0], "show"))
+       if (!strcasecmp(argv[0], "batch") && !(flags & CLI_FLAG_BATCH))
+               return uci_batch();
+       else if (!strcasecmp(argv[0], "show"))
                cmd = CMD_SHOW;
+       else if (!strcasecmp(argv[0], "changes"))
+               cmd = CMD_CHANGES;
        else if (!strcasecmp(argv[0], "export"))
                cmd = CMD_EXPORT;
        else if (!strcasecmp(argv[0], "commit"))
@@ -285,10 +397,14 @@ static int uci_cmd(int argc, char **argv)
        else if (!strcasecmp(argv[0], "ren") ||
                 !strcasecmp(argv[0], "rename"))
                cmd = CMD_RENAME;
+       else if (!strcasecmp(argv[0], "revert"))
+               cmd = CMD_REVERT;
        else if (!strcasecmp(argv[0], "del"))
                cmd = CMD_DEL;
        else if (!strcasecmp(argv[0], "import"))
                cmd = CMD_IMPORT;
+       else if (!strcasecmp(argv[0], "help"))
+               cmd = CMD_HELP;
        else
                cmd = -1;
 
@@ -297,13 +413,18 @@ static int uci_cmd(int argc, char **argv)
                case CMD_SET:
                case CMD_DEL:
                case CMD_RENAME:
+               case CMD_REVERT:
                        return uci_do_section_cmd(cmd, argc, argv);
                case CMD_SHOW:
                case CMD_EXPORT:
                case CMD_COMMIT:
+               case CMD_CHANGES:
                        return uci_do_package_cmd(cmd, argc, argv);
                case CMD_IMPORT:
                        return uci_do_import(argc, argv);
+               case CMD_HELP:
+                       uci_usage();
+                       return 0;
                default:
                        return 255;
        }
@@ -314,6 +435,7 @@ int main(int argc, char **argv)
        int ret;
        int c;
 
+       appname = argv[0];
        input = stdin;
        ctx = uci_alloc_context();
        if (!ctx) {
@@ -358,8 +480,8 @@ int main(int argc, char **argv)
                                flags |= CLI_FLAG_QUIET;
                                break;
                        default:
-                               uci_usage(argc, argv);
-                               break;
+                               uci_usage();
+                               return 0;
                }
        }
        if (optind > 1)
@@ -367,13 +489,17 @@ int main(int argc, char **argv)
        argv += optind - 1;
        argc -= optind - 1;
 
-       if (argc < 2)
-               uci_usage(argc, argv);
+       if (argc < 2) {
+               uci_usage();
+               return 0;
+       }
        ret = uci_cmd(argc - 1, argv + 1);
        if (input != stdin)
                fclose(input);
-       if (ret == 255)
-               uci_usage(argc, argv);
+       if (ret == 255) {
+               uci_usage();
+               return 0;
+       }
 
        uci_free_context(ctx);