add feature flags for the build process, improve automatic rebuild
[project/uci.git] / cli.c
diff --git a/cli.c b/cli.c
index 1a478bb..287ef96 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_MERGE =    (1 << 0),
+       CLI_FLAG_QUIET =    (1 << 1),
+       CLI_FLAG_NOCOMMIT = (1 << 2),
+       CLI_FLAG_BATCH =    (1 << 3),
 } flags;
-static FILE *input = stdin;
+
+static FILE *input;
 
 static struct uci_context *ctx;
 enum {
@@ -28,34 +36,57 @@ enum {
        CMD_SET,
        CMD_DEL,
        CMD_RENAME,
+       CMD_REVERT,
        /* package cmds */
        CMD_SHOW,
-       CMD_IMPORT,
+       CMD_CHANGES,
        CMD_EXPORT,
        CMD_COMMIT,
+       /* other cmds */
+       CMD_ADD,
+       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"
+               "\tchanges    [<config>]\n"
+               "\tadd        <config> <section-type>\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"
                "\t-m         when importing, merge data into an existing package\n"
-               "\t-s         force strict mode (stop on parser errors)\n"
+               "\t-n         name unnamed sections on export (default)\n"
+               "\t-N         don't name unnamed sections\n"
+               "\t-p <path>  add a search path for config change files\n"
+               "\t-P <path>  add a search path for config change files and use as default\n"
+               "\t-q         quiet mode (don't print error messages)\n"
+               "\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)
+{
+       if (flags & CLI_FLAG_QUIET)
+               return;
+
+       uci_perror(ctx, appname);
 }
 
 static void uci_show_section(struct uci_section *p)
@@ -80,19 +111,50 @@ 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) {
-               uci_perror(ctx, appname);
+       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;
                if (uci_commit(ctx, &p, false) != UCI_OK)
-                       uci_perror(ctx, appname);
+                       cli_perror();
                break;
        case CMD_EXPORT:
                uci_export(ctx, stdout, p, true);
@@ -109,10 +171,9 @@ static int package_cmd(int cmd, char *package)
 static int uci_do_import(int argc, char **argv)
 {
        struct uci_package *package = NULL;
-       char **configs = NULL;
        char *name = NULL;
        int ret = UCI_OK;
-       char **p;
+       bool merge = false;
 
        if (argc > 2)
                return 255;
@@ -126,10 +187,12 @@ static int uci_do_import(int argc, char **argv)
        if (flags & CLI_FLAG_MERGE) {
                if (uci_load(ctx, name, &package) != UCI_OK)
                        package = NULL;
+               else
+                       merge = true;
        }
        ret = uci_import(ctx, input, name, &package, (name != NULL));
        if (ret == UCI_OK) {
-               if (flags & CLI_FLAG_MERGE) {
+               if (merge) {
                        ret = uci_save(ctx, package);
                } else {
                        struct uci_element *e;
@@ -142,7 +205,7 @@ static int uci_do_import(int argc, char **argv)
        }
 
        if (ret != UCI_OK) {
-               uci_perror(ctx, appname);
+               cli_perror();
                return 1;
        }
 
@@ -161,7 +224,7 @@ static int uci_do_package_cmd(int cmd, int argc, char **argv)
                return package_cmd(cmd, argv[1]);
 
        if ((uci_list_configs(ctx, &configs) != UCI_OK) || !configs) {
-               uci_perror(ctx, appname);
+               cli_perror();
                return 1;
        }
 
@@ -172,6 +235,33 @@ static int uci_do_package_cmd(int cmd, int argc, char **argv)
        return 0;
 }
 
+static int uci_do_add(int argc, char **argv)
+{
+       struct uci_package *p = NULL;
+       struct uci_section *s = NULL;
+       int ret;
+
+       if (argc != 3)
+               return 255;
+
+       ret = uci_load(ctx, argv[1], &p);
+       if (ret != UCI_OK)
+               goto done;
+
+       ret = uci_add_section(ctx, p, argv[2], &s);
+       if (ret != UCI_OK)
+               goto done;
+
+       ret = uci_save(ctx, p);
+
+done:
+       if (ret != UCI_OK)
+               cli_perror();
+       else if (s)
+               fprintf(stdout, "%s\n", s->e.name);
+
+       return ret;
+}
 
 static int uci_do_section_cmd(int cmd, int argc, char **argv)
 {
@@ -197,11 +287,15 @@ static int uci_do_section_cmd(int cmd, int argc, char **argv)
        }
        if (uci_parse_tuple(ctx, argv[1], &package, &section, &option, ptr) != UCI_OK)
                return 1;
+       if (section && !section[0])
+               return 1;
 
        if (uci_load(ctx, package, &p) != UCI_OK) {
-               uci_perror(ctx, appname);
+               cli_perror();
                return 1;
        }
+       if (!p)
+               return 0;
 
        switch(cmd) {
        case CMD_GET:
@@ -225,8 +319,11 @@ 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);
+               ret = uci_set(ctx, p, section, option, value, NULL);
                break;
        case CMD_DEL:
                ret = uci_delete(ctx, p, section, option);
@@ -234,7 +331,7 @@ 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 */
@@ -242,19 +339,87 @@ static int uci_do_section_cmd(int cmd, int argc, char **argv)
                ret = uci_save(ctx, p);
 
        if (ret != UCI_OK) {
-               uci_perror(ctx, appname);
+               cli_perror();
                return 1;
        }
 
        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_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"))
@@ -266,10 +431,16 @@ 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 if (!strcasecmp(argv[0], "add"))
+               cmd = CMD_ADD;
        else
                cmd = -1;
 
@@ -278,13 +449,20 @@ 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_ADD:
+                       return uci_do_add(argc, argv);
+               case CMD_HELP:
+                       uci_usage();
+                       return 0;
                default:
                        return 255;
        }
@@ -295,13 +473,15 @@ int main(int argc, char **argv)
        int ret;
        int c;
 
+       appname = argv[0];
+       input = stdin;
        ctx = uci_alloc_context();
        if (!ctx) {
                fprintf(stderr, "Out of memory\n");
                return 1;
        }
 
-       while((c = getopt(argc, argv, "mfsS")) != -1) {
+       while((c = getopt(argc, argv, "f:mnNp:P:sSq")) != -1) {
                switch(c) {
                        case 'f':
                                input = fopen(optarg, "r");
@@ -320,9 +500,26 @@ int main(int argc, char **argv)
                                ctx->flags &= ~UCI_FLAG_STRICT;
                                ctx->flags |= UCI_FLAG_PERROR;
                                break;
-                       default:
-                               uci_usage(argc, argv);
+                       case 'n':
+                               ctx->flags |= UCI_FLAG_EXPORT_NAME;
                                break;
+                       case 'N':
+                               ctx->flags &= ~UCI_FLAG_EXPORT_NAME;
+                               break;
+                       case 'p':
+                               uci_add_history_path(ctx, optarg);
+                               break;
+                       case 'P':
+                               uci_add_history_path(ctx, ctx->savedir);
+                               uci_set_savedir(ctx, optarg);
+                               flags |= CLI_FLAG_NOCOMMIT;
+                               break;
+                       case 'q':
+                               flags |= CLI_FLAG_QUIET;
+                               break;
+                       default:
+                               uci_usage();
+                               return 0;
                }
        }
        if (optind > 1)
@@ -330,13 +527,17 @@ 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);