+/*
+ * Copyright (C) 2011-2013 Felix Fietkau <nbd@openwrt.org>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
#include <json/json.h>
-#include <libubox/list.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <stdbool.h>
#include <ctype.h>
#include <getopt.h>
+#include "list.h"
#define MAX_VARLEN 256
+static const char *var_prefix = "";
+static int var_prefix_len = 0;
+
static int add_json_element(const char *key, json_object *obj);
static int add_json_object(json_object *obj)
{
char *keys;
- keys = alloca(strlen(prefix) + sizeof("KEYS_") + 1);
- sprintf(keys, "KEYS_%s", prefix);
+ keys = alloca(var_prefix_len + strlen(prefix) + sizeof("KEYS_") + 1);
+ sprintf(keys, "%sKEYS_%s", var_prefix, prefix);
return getenv(keys);
}
-static void get_var(const char *prefix, const char *name, char **var, char **type)
+static void get_var(const char *prefix, const char **name, char **var, char **type)
{
- char *tmpname;
+ char *tmpname, *varname;
+
+ tmpname = alloca(var_prefix_len + strlen(prefix) + 1 + strlen(*name) + 1 + sizeof("TYPE_"));
+
+ sprintf(tmpname, "%s%s_%s", var_prefix, prefix, *name);
+ *var = getenv(tmpname);
- tmpname = alloca(strlen(prefix) + 1 + strlen(name) + 1 + sizeof("TYPE_"));
- sprintf(tmpname, "TYPE_%s_%s", prefix, name);
- *var = getenv(tmpname + 5);
+ sprintf(tmpname, "%sTYPE_%s_%s", var_prefix, prefix, *name);
*type = getenv(tmpname);
+
+ sprintf(tmpname, "%sNAME_%s_%s", var_prefix, prefix, *name);
+ varname = getenv(tmpname);
+ if (varname)
+ *name = varname;
}
static json_object *jshn_add_objects(json_object *obj, const char *prefix, bool array);
json_object *new;
char *var, *type;
- get_var(prefix, name, &var, &type);
+ get_var(prefix, &name, &var, &type);
if (!var || !type)
return;
return obj;
}
-static int jshn_format(void)
+static int jshn_format(bool no_newline)
{
json_object *obj;
obj = json_object_new_object();
jshn_add_objects(obj, "JSON_VAR", false);
- fprintf(stdout, "%s\n", json_object_to_json_string(obj));
+ fprintf(stdout, "%s%s", json_object_to_json_string(obj),
+ no_newline ? "" : "\n");
json_object_put(obj);
return 0;
}
static int usage(const char *progname)
{
- fprintf(stderr, "Usage: %s -r <message>|-w\n", progname);
+ fprintf(stderr, "Usage: %s [-n] -r <message>|-w\n", progname);
return 2;
}
int main(int argc, char **argv)
{
+ bool no_newline = false;
int ch;
- while ((ch = getopt(argc, argv, "r:w")) != -1) {
+ while ((ch = getopt(argc, argv, "p:nr:w")) != -1) {
switch(ch) {
+ case 'p':
+ var_prefix = optarg;
+ var_prefix_len = strlen(var_prefix);
+ break;
case 'r':
return jshn_parse(optarg);
case 'w':
- return jshn_format();
+ return jshn_format(no_newline);
+ case 'n':
+ no_newline = true;
+ break;
default:
return usage(argv[0]);
}