optimization
[project/uci.git] / cli.c
diff --git a/cli.c b/cli.c
index 4bc0234..87de48c 100644 (file)
--- a/cli.c
+++ b/cli.c
  */
 #include <strings.h>
 #include <stdlib.h>
+#include <unistd.h>
 #include "uci.h"
 
+static const char *appname = "uci";
+static enum {
+       CLI_FLAG_MERGE = (1 << 0),
+} flags;
+static FILE *input = stdin;
+
 static struct uci_context *ctx;
-static char *buf = NULL;
-static int buflen = 256;
+enum {
+       /* section cmds */
+       CMD_GET,
+       CMD_SET,
+       CMD_DEL,
+       CMD_RENAME,
+       /* package cmds */
+       CMD_SHOW,
+       CMD_IMPORT,
+       CMD_EXPORT,
+       CMD_COMMIT,
+};
 
 static void uci_usage(int argc, char **argv)
 {
        fprintf(stderr,
                "Usage: %s [<options>] <command> [<arguments>]\n\n"
                "Commands:\n"
-               "\tshow [<config>[.<section>[.<option>]]]\n"
-               "\texport [<config>]\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"
+               "\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-S         disable strict mode\n"
                "\n",
                argv[0]
        );
        exit(255);
 }
 
-static char *uci_escape(char *str)
-{
-       char *s, *p, *t;
-       int pos = 0;
-
-       if (!buf)
-               buf = malloc(buflen);
-
-       s = str;
-       p = strchr(str, '\'');
-       if (!p)
-               return str;
-
-       do {
-               int len = p - s;
-               if (len > 0) {
-                       if (p + 3 - str >= buflen) {
-                               buflen *= 2;
-                               buf = realloc(buf, buflen);
-                               if (!buf) {
-                                       fprintf(stderr, "Out of memory\n");
-                                       exit(255);
-                               }
-                       }
-                       memcpy(&buf[pos], s, len);
-                       pos += len;
-               }
-               strcpy(&buf[pos], "'\\''");
-               pos += 3;
-               s = p + 1;
-       } while ((p = strchr(s, '\'')));
-
-       return buf;
-}
-
 static void uci_show_section(struct uci_section *p)
 {
-       struct uci_option *o;
+       struct uci_element *e;
        const char *cname, *sname;
 
-       cname = p->config->name;
-       sname = p->name;
+       cname = p->package->e.name;
+       sname = p->e.name;
        printf("%s.%s=%s\n", cname, sname, p->type);
-       uci_foreach_entry(option, &p->options, o) {
-               printf("%s.%s.%s=%s\n", cname, sname, o->name, o->value);
+       uci_foreach_element(&p->options, e) {
+               printf("%s.%s.%s=%s\n", cname, sname, e->name, uci_to_option(e)->value);
        }
 }
 
-static void uci_export_section(struct uci_section *p)
+static void uci_show_package(struct uci_package *p)
 {
-       struct uci_option *o;
-       const char *name;
-
-       printf("\nconfig '%s'", uci_escape(p->type));
-       printf(" '%s'\n", uci_escape(p->name));
-       uci_foreach_entry(option, &p->options, o) {
-               printf("\toption '%s'", uci_escape(o->name));
-               printf(" '%s'\n", uci_escape(o->value));
+       struct uci_element *e;
+
+       uci_foreach_element( &p->sections, e) {
+               uci_show_section(uci_to_section(e));
        }
 }
 
-static void foreach_section(const char *configname, const char *section, void (*callback)(struct uci_section *))
+
+static int package_cmd(int cmd, char *package)
 {
-       struct uci_config *cfg;
-       struct uci_section *p;
+       struct uci_package *p = NULL;
 
-       if (uci_load(ctx, configname, &cfg) != UCI_OK) {
-               uci_perror(ctx, "uci_load");
-               return;
+       if (uci_load(ctx, package, &p) != UCI_OK) {
+               uci_perror(ctx, appname);
+               return 1;
        }
-
-       uci_list_empty(&cfg->sections);
-       uci_foreach_entry(section, &cfg->sections, p) {
-               if (!section || !strcmp(p->name, section))
-                       callback(p);
+       switch(cmd) {
+       case CMD_COMMIT:
+               if (uci_commit(ctx, &p) != UCI_OK)
+                       uci_perror(ctx, appname);
+               break;
+       case CMD_EXPORT:
+               uci_export(ctx, stdout, p, true);
+               break;
+       case CMD_SHOW:
+               uci_show_package(p);
+               break;
        }
-       uci_unload(ctx, configname);
+
+       uci_unload(ctx, p);
+       return 0;
 }
 
-static int uci_show(int argc, char **argv)
+static int uci_do_import(int argc, char **argv)
 {
-       char **configs = uci_list_configs();
+       return 0;
+}
+
+static int uci_do_package_cmd(int cmd, int argc, char **argv)
+{
+       char **configs = NULL;
        char **p;
 
-       if (!configs)
-               return 0;
+       if (argc > 2)
+               return 255;
+
+       if (argc == 2)
+               return package_cmd(cmd, argv[1]);
+
+       if ((uci_list_configs(ctx, &configs) != UCI_OK) || !configs) {
+               uci_perror(ctx, appname);
+               return 1;
+       }
 
        for (p = configs; *p; p++) {
-               if ((argc < 2) || !strcmp(argv[1], *p))
-                       foreach_section(*p, (argc > 2 ? argv[2] : NULL), uci_show_section);
+               package_cmd(cmd, *p);
        }
 
        return 0;
 }
 
-static int uci_export(int argc, char **argv)
+
+static int uci_do_section_cmd(int cmd, int argc, char **argv)
 {
-       char **configs = uci_list_configs();
-       char **p;
+       struct uci_package *p = NULL;
+       struct uci_element *e = NULL;
+       char *package = NULL;
+       char *section = NULL;
+       char *option = NULL;
+       char *value = NULL;
+       char **ptr = NULL;
+       int ret = UCI_OK;
 
-       if (!configs)
-               return 0;
+       if (argc != 2)
+               return 255;
 
-       for (p = configs; *p; p++) {
-               if ((argc < 2) || !strcmp(argv[1], *p)) {
-                       printf("package '%s'\n", uci_escape(*p));
-                       foreach_section(*p, NULL, uci_export_section);
-                       printf("\n");
+       switch(cmd) {
+       case CMD_SET:
+       case CMD_RENAME:
+               ptr = &value;
+               break;
+       default:
+               break;
+       }
+       if (uci_parse_tuple(ctx, argv[1], &package, &section, &option, ptr) != UCI_OK)
+               return 1;
+
+       if (uci_load(ctx, package, &p) != UCI_OK) {
+               uci_perror(ctx, appname);
+               return 1;
+       }
+
+       switch(cmd) {
+       case CMD_GET:
+               if (uci_lookup(ctx, &e, p, section, option) != UCI_OK)
+                       return 1;
+
+               switch(e->type) {
+               case UCI_TYPE_SECTION:
+                       value = uci_to_section(e)->type;
+                       break;
+               case UCI_TYPE_OPTION:
+                       value = uci_to_option(e)->value;
+                       break;
+               default:
+                       /* should not happen */
+                       return 1;
                }
+               /* throw the value to stdout */
+               printf("%s\n", value);
+               break;
+       case CMD_RENAME:
+               ret = uci_rename(ctx, p, section, option, value);
+               break;
+       case CMD_SET:
+               ret = uci_set(ctx, p, section, option, value);
+               break;
+       case CMD_DEL:
+               ret = uci_delete(ctx, p, section, option);
+               break;
+       }
+
+       /* no save necessary for get */
+       if (cmd == CMD_GET)
+               return 0;
+
+       /* save changes, but don't commit them yet */
+       if (ret == UCI_OK)
+               ret = uci_save(ctx, p);
+
+       if (ret != UCI_OK) {
+               uci_perror(ctx, appname);
+               return 1;
        }
+
        return 0;
 }
 
 static int uci_cmd(int argc, char **argv)
 {
+       int cmd = 0;
+
        if (!strcasecmp(argv[0], "show"))
-               return uci_show(argc, argv);
-       if (!strcasecmp(argv[0], "export"))
-               return uci_export(argc, argv);
-       return 255;
+               cmd = CMD_SHOW;
+       else if (!strcasecmp(argv[0], "export"))
+               cmd = CMD_EXPORT;
+       else if (!strcasecmp(argv[0], "commit"))
+               cmd = CMD_COMMIT;
+       else if (!strcasecmp(argv[0], "get"))
+               cmd = CMD_GET;
+       else if (!strcasecmp(argv[0], "set"))
+               cmd = CMD_SET;
+       else if (!strcasecmp(argv[0], "ren") ||
+                !strcasecmp(argv[0], "rename"))
+               cmd = CMD_RENAME;
+       else if (!strcasecmp(argv[0], "del"))
+               cmd = CMD_DEL;
+       else if (!strcasecmp(argv[0], "import"))
+               cmd = CMD_IMPORT;
+       else
+               cmd = -1;
+
+       switch(cmd) {
+               case CMD_GET:
+               case CMD_SET:
+               case CMD_DEL:
+               case CMD_RENAME:
+                       return uci_do_section_cmd(cmd, argc, argv);
+               case CMD_SHOW:
+               case CMD_EXPORT:
+               case CMD_COMMIT:
+                       return uci_do_package_cmd(cmd, argc, argv);
+               case CMD_IMPORT:
+                       return uci_do_import(argc, argv);
+               default:
+                       return 255;
+       }
 }
 
 int main(int argc, char **argv)
 {
        int ret;
+       int c;
+
+       ctx = uci_alloc_context();
+       if (!ctx) {
+               fprintf(stderr, "Out of memory\n");
+               return 1;
+       }
+
+       while((c = getopt(argc, argv, "sS")) != -1) {
+               switch(c) {
+                       case 'f':
+                               input = fopen(optarg, "r");
+                               if (!input) {
+                                       perror("uci");
+                                       return 1;
+                               }
+                               break;
+                       case 'm':
+                               flags |= CLI_FLAG_MERGE;
+                               break;
+                       case 's':
+                               ctx->flags |= UCI_FLAG_STRICT;
+                               break;
+                       case 'S':
+                               ctx->flags &= ~UCI_FLAG_STRICT;
+                               ctx->flags |= UCI_FLAG_PERROR;
+                               break;
+                       default:
+                               uci_usage(argc, argv);
+                               break;
+               }
+       }
+       if (optind > 1)
+               argv[optind - 1] = argv[0];
+       argv += optind - 1;
+       argc -= optind - 1;
 
-       ctx = uci_alloc();
        if (argc < 2)
                uci_usage(argc, argv);
        ret = uci_cmd(argc - 1, argv + 1);
+       if (input != stdin)
+               fclose(input);
        if (ret == 255)
                uci_usage(argc, argv);
-       uci_free(ctx);
+
+       uci_free_context(ctx);
 
        return ret;
 }