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Diffstat (limited to 'src/devtools/main-json2c.c')
-rw-r--r-- | src/devtools/main-json2c.c | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/src/devtools/main-json2c.c b/src/devtools/main-json2c.c new file mode 100644 index 00000000..eb0c7a05 --- /dev/null +++ b/src/devtools/main-json2c.c @@ -0,0 +1,103 @@ +/* + * Copyright (C) 2016, 2017, 2018 "IoT.bzh" + * Author José Bollo <jose.bollo@iot.bzh> + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + * This simple program expands the object { "$ref": "#/path/to/a/target" } + * + * For example: + * + * { + * "type":{ + * "a": "int", + * "b": { "$ref": "#/type/a" } + * } + * } + * + * will be exapanded to + * + * { + * "type":{ + * "a": "int", + * "b": "int" + * } + * } + * + * Invocation: program [file|-]... + * + * without arguments, it reads the input. + */ + +#define _GNU_SOURCE +#include <string.h> +#include <stdio.h> +#include <unistd.h> + +#include <json-c/json.h> + +#include "json2c.h" + +/** + * process a file and prints its expansion on stdout + */ +void process(char *filename) +{ + char *desc; + struct json_object *root; + + /* translate - */ + if (!strcmp(filename, "-")) + filename = "/dev/stdin"; + + /* check access */ + if (access(filename, R_OK)) { + fprintf(stderr, "can't access file %s\n", filename); + exit(1); + } + + /* read the file */ + root = json_object_from_file(filename); + if (!root) { + fprintf(stderr, "reading file %s produced null\n", filename); + exit(1); + } + + /* create the description */ + desc = json2c_std(root); + if (!desc) { + fprintf(stderr, "out of memory\n"); + exit(1); + } + + /* print the description */ + printf("%s", desc); + + /* clean up */ + json_object_put(root); + free(desc); +} + +/** process the list of files or stdin if none */ +int main(int ac, char **av) +{ + if (!*++av) + process("-"); + else { + do { process(*av); } while(*++av); + } + return 0; +} + + |