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json: add json_parse_file_at() helper

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This is an "at" function, similar to json_parse_file().
This commit is contained in:
Lennart Poettering 2019-01-08 18:46:47 +01:00
parent 83bc6cb792
commit f325aaf341
2 changed files with 8 additions and 3 deletions
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4
src/shared/json.c
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@ -2833,7 +2833,7 @@ int json_parse_continue(const char **p, JsonVariant **ret, unsigned *ret_line, u
return json_parse_internal(p, NULL, ret, ret_line, ret_column, true);
}
int json_parse_file(FILE *f, const char *path, JsonVariant **ret, unsigned *ret_line, unsigned *ret_column) {
int json_parse_file_at(FILE *f, int dir_fd, const char *path, JsonVariant **ret, unsigned *ret_line, unsigned *ret_column) {
_cleanup_(json_source_unrefp) JsonSource *source = NULL;
_cleanup_free_ char *text = NULL;
const char *p;
@ -2842,7 +2842,7 @@ int json_parse_file(FILE *f, const char *path, JsonVariant **ret, unsigned *ret_
if (f)
r = read_full_stream(f, &text, NULL);
else if (path)
r = read_full_file(path, &text, NULL);
r = read_full_file_full(dir_fd, path, 0, &text, NULL);
else
return -EINVAL;
if (r < 0)

7
src/shared/json.h
View File

@ -1,6 +1,7 @@
/* SPDX-License-Identifier: LGPL-2.1+ */
#pragma once
#include <fcntl.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
@ -175,7 +176,11 @@ int json_variant_set_field(JsonVariant **v, const char *field, JsonVariant *valu
int json_parse(const char *string, JsonVariant **ret, unsigned *ret_line, unsigned *ret_column);
int json_parse_continue(const char **p, JsonVariant **ret, unsigned *ret_line, unsigned *ret_column);
int json_parse_file(FILE *f, const char *path, JsonVariant **ret, unsigned *ret_line, unsigned *ret_column);
int json_parse_file_at(FILE *f, int dir_fd, const char *path, JsonVariant **ret, unsigned *ret_line, unsigned *ret_column);
static inline int json_parse_file(FILE *f, const char *path, JsonVariant **ret, unsigned *ret_line, unsigned *ret_column) {
return json_parse_file_at(f, AT_FDCWD, path, ret, ret_line, ret_column);
}
enum {
_JSON_BUILD_STRING,