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Dmitrii Kuvaiskii 8eee4a4742 [LibOS,Pal,Examples,GSC,Docs] Move manifest parsing to TOML
The manifest syntax stays exactly the same, including 0 and 1
integers to denote boolean values (this is done for ease of porting
and can be fixed in future commits). The only visible change is
surrounding strings in the manifest with quotes (requirement of
TOML). All manifests and Makefiles of our tests and example apps are
ported to the new TOML syntax. Documentation is updated.
2020-11-12 05:45:07 -08:00

90 lines
2.1 KiB
C

/* SPDX-License-Identifier: LGPL-3.0-or-later */
/* Copyright (C) 2020 Intel Corporation
* Dmitrii Kuvaiskii <dmitrii.kuvaiskii@intel.com>
*/
#include <stdint.h>
#include "api.h"
#include "toml.h"
/* returns a pointer to next '.' in `s` or null byte ending the string if no '.' was found */
static char* find_next_dot(char* s) {
while (*s && *s != '.')
s++;
return s;
}
/* searches for a dotted-key (e.g. "fs.mount.lib1.type") from `root`; returns NULL if value for
* such key is not found */
static toml_raw_t toml_raw_in_dottedkey(const toml_table_t* root, const char* _key) {
char* key = strdup(_key);
if (!key)
return NULL;
toml_raw_t raw = NULL;
assert(root);
const toml_table_t* cur_table = root;
char* subkey = key;
char* subkey_end = find_next_dot(subkey);
while (*subkey_end == '.') {
*subkey_end = '\0';
cur_table = toml_table_in(cur_table, subkey);
if (!cur_table)
goto out;
subkey = subkey_end + 1;
subkey_end = find_next_dot(subkey);
}
assert(*subkey_end == '\0');
raw = toml_raw_in(cur_table, subkey);
out:
free(key);
return raw;
}
int toml_int_in(const toml_table_t* root, const char* key, int64_t defaultval, int64_t* retval) {
toml_raw_t raw = toml_raw_in_dottedkey(root, key);
if (!raw) {
*retval = defaultval;
return 0;
}
return toml_rtoi(raw, retval);
}
int toml_string_in(const toml_table_t* root, const char* key, char** retval) {
toml_raw_t raw = toml_raw_in_dottedkey(root, key);
if (!raw) {
*retval = NULL;
return 0;
}
return toml_rtos(raw, retval);
}
int toml_sizestring_in(const toml_table_t* root, const char* key, uint64_t defaultval,
uint64_t* retval) {
toml_raw_t raw = toml_raw_in_dottedkey(root, key);
if (!raw) {
*retval = defaultval;
return 0;
}
char* str = NULL;
if (toml_rtos(raw, &str) < 0) {
return -1;
}
assert(str);
int64_t ret = parse_size_str(str);
free(str);
if (ret < 0)
return -1;
*retval = (uint64_t)ret;
return 0;
}