diff options
Diffstat (limited to 'src/templating/mustach-tool.c')
| -rw-r--r-- | src/templating/mustach-tool.c | 177 |
1 files changed, 140 insertions, 37 deletions
diff --git a/src/templating/mustach-tool.c b/src/templating/mustach-tool.c index 364e34a84..5f28c1f58 100644 --- a/src/templating/mustach-tool.c +++ b/src/templating/mustach-tool.c @@ -1,23 +1,14 @@ /* Author: José Bollo <jobol@nonadev.net> - Author: José Bollo <jose.bollo@iot.bzh> https://gitlab.com/jobol/mustach - 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. + SPDX-License-Identifier: ISC */ +#ifndef _GNU_SOURCE #define _GNU_SOURCE +#endif #include <stdlib.h> #include <stdio.h> @@ -27,7 +18,7 @@ #include <string.h> #include <libgen.h> -#include "mustach-json-c.h" +#include "mustach-wrap.h" static const size_t BLOCKSIZE = 8192; @@ -43,16 +34,40 @@ static const char *errors[] = { "bad unescape tag", "invalid interface", "item not found", - "partial not found" + "partial not found", + "undefined tag", + "too much template nesting" }; +static const char *errmsg = 0; +static int flags = 0; +static FILE *output = 0; + static void help(char *prog) { - printf("usage: %s json-file mustach-templates...\n", basename(prog)); + char *name = basename(prog); +#define STR_INDIR(x) #x +#define STR(x) STR_INDIR(x) + printf("%s version %s\n", name, STR(VERSION)); +#undef STR +#undef STR_INDIR + printf( + "\n" + "USAGE:\n" + " %s [FLAGS] <json-file> <mustach-templates...>\n" + "\n" + "FLAGS:\n" + " -h, --help Prints help information\n" + " -s, --strict Error when a tag is undefined\n" + "\n" + "ARGS: (if a file is -, read standard input)\n" + " <json-file> JSON file with input data\n" + " <mustach-templates...> Template files to instantiate\n", + name); exit(0); } -static char *readfile(const char *filename) +static char *readfile(const char *filename, size_t *length) { int f; struct stat s; @@ -106,50 +121,138 @@ static char *readfile(const char *filename) } while(rc > 0); close(f); + if (length != NULL) + *length = pos; result[pos] = 0; return result; } +static int load_json(const char *filename); +static int process(const char *content, size_t length); +static void close_json(); + int main(int ac, char **av) { - struct json_object *o; - char *t; + char *t, *f; char *prog = *av; int s; + size_t length; (void)ac; /* unused */ + flags = Mustach_With_AllExtensions; + output = stdout; - if (*++av) { + for( ++av ; av[0] && av[0][0] == '-' && av[0][1] != 0 ; av++) { if (!strcmp(*av, "-h") || !strcmp(*av, "--help")) help(prog); - if (av[0][0] == '-' && !av[0][1]) - o = json_object_from_fd(0); - else - o = json_object_from_file(av[0]); -#if JSON_C_VERSION_NUM >= 0x000D00 - if (json_util_get_last_err() != NULL) { - fprintf(stderr, "Bad json: %s (file %s)\n", json_util_get_last_err(), av[0]); - exit(1); - } - else -#endif - if (o == NULL) { - fprintf(stderr, "Aborted: null json (file %s)\n", av[0]); + if (!strcmp(*av, "-s") || !strcmp(*av, "--strict")) + flags |= Mustach_With_ErrorUndefined; + } + if (*av) { + f = (av[0][0] == '-' && !av[0][1]) ? "/dev/stdin" : av[0]; + s = load_json(f); + if (s < 0) { + fprintf(stderr, "Can't load json file %s\n", av[0]); + if(errmsg) + fprintf(stderr, " reason: %s\n", errmsg); exit(1); } while(*++av) { - t = readfile(*av); - s = fmustach_json_c(t, o, stdout); - if (s != 0) { + t = readfile(*av, &length); + s = process(t, length); + free(t); + if (s != MUSTACH_OK) { s = -s; if (s < 1 || s >= (int)(sizeof errors / sizeof * errors)) s = 0; fprintf(stderr, "Template error %s (file %s)\n", errors[s], *av); } - free(t); } - json_object_put(o); + close_json(); + } + return 0; +} + +#define MUSTACH_TOOL_JSON_C 1 +#define MUSTACH_TOOL_JANSSON 2 +#define MUSTACH_TOOL_CJSON 3 + +#if TOOL == MUSTACH_TOOL_JSON_C + +#include "mustach-json-c.h" + +static struct json_object *o; +static int load_json(const char *filename) +{ + o = json_object_from_file(filename); +#if JSON_C_VERSION_NUM >= 0x000D00 + errmsg = json_util_get_last_err(); + if (errmsg != NULL) + return -1; +#endif + if (o == NULL) { + errmsg = "null json"; + return -1; + } + return 0; +} +static int process(const char *content, size_t length) +{ + return mustach_json_c_file(content, length, o, flags, output); +} +static void close_json() +{ + json_object_put(o); +} + +#elif TOOL == MUSTACH_TOOL_JANSSON + +#include "mustach-jansson.h" + +static json_t *o; +static json_error_t e; +static int load_json(const char *filename) +{ + o = json_load_file(filename, JSON_DECODE_ANY, &e); + if (o == NULL) { + errmsg = e.text; + return -1; } return 0; } +static int process(const char *content, size_t length) +{ + return mustach_jansson_file(content, length, o, flags, output); +} +static void close_json() +{ + json_decref(o); +} + +#elif TOOL == MUSTACH_TOOL_CJSON +#include "mustach-cjson.h" + +static cJSON *o; +static int load_json(const char *filename) +{ + char *t; + size_t length; + + t = readfile(filename, &length); + o = t ? cJSON_ParseWithLength(t, length) : NULL; + free(t); + return -!o; +} +static int process(const char *content, size_t length) +{ + return mustach_cJSON_file(content, length, o, flags, output); +} +static void close_json() +{ + cJSON_Delete(o); +} + +#else +#error "no defined json library" +#endif |