124 lines
2.6 KiB
C
124 lines
2.6 KiB
C
#include <stddef.h>
|
|
#include <stdbool.h>
|
|
#include <lib/config.h>
|
|
#include <lib/libc.h>
|
|
#include <lib/blib.h>
|
|
#include <mm/pmm.h>
|
|
#include <fs/file.h>
|
|
|
|
#define SEPARATOR '\n'
|
|
|
|
bool config_ready = false;
|
|
|
|
static char *config_addr;
|
|
|
|
int init_config(int drive, int part) {
|
|
struct file_handle f;
|
|
|
|
if (fopen(&f, drive, part, "/limine.cfg")) {
|
|
if (fopen(&f, drive, part, "/boot/limine.cfg")) {
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
size_t config_size = f.size + 1;
|
|
config_addr = conv_mem_alloc(config_size);
|
|
|
|
fread(&f, config_addr, 0, f.size);
|
|
|
|
// remove windows carriage returns, if any
|
|
for (size_t i = 0; i < config_size; i++) {
|
|
if (config_addr[i] == '\r') {
|
|
for (size_t j = i; j < config_size - 1; j++)
|
|
config_addr[j] = config_addr[j+1];
|
|
config_size--;
|
|
}
|
|
}
|
|
|
|
config_ready = true;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int config_get_entry_name(char *ret, size_t index, size_t limit) {
|
|
char *p = config_addr;
|
|
|
|
for (size_t i = 0; i <= index; i++) {
|
|
while (*p != ':') {
|
|
if (!*p)
|
|
return -1;
|
|
p++;
|
|
}
|
|
p++;
|
|
if ((p - 1) != config_addr && *(p - 2) != '\n')
|
|
i--;
|
|
}
|
|
|
|
size_t i;
|
|
for (i = 0; i < (limit - 1); i++) {
|
|
if (p[i] == SEPARATOR)
|
|
break;
|
|
ret[i] = p[i];
|
|
}
|
|
|
|
ret[i] = 0;
|
|
return 0;
|
|
}
|
|
|
|
int config_set_entry(size_t index) {
|
|
char *p = config_addr;
|
|
|
|
for (size_t i = 0; i <= index; i++) {
|
|
while (*p != ':') {
|
|
if (!*p)
|
|
return -1;
|
|
p++;
|
|
}
|
|
p++;
|
|
if ((p - 1) != config_addr && *(p - 2) != '\n')
|
|
i--;
|
|
}
|
|
|
|
config_addr = p;
|
|
|
|
cont:
|
|
while (*p != ':' && *p)
|
|
p++;
|
|
|
|
if (*p && *(p - 1) != '\n') {
|
|
p++;
|
|
goto cont;
|
|
}
|
|
|
|
*p = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
char *config_get_value(char *buf, size_t index, size_t limit, const char *key) {
|
|
if (!limit || !buf || !key)
|
|
return NULL;
|
|
|
|
size_t key_len = strlen(key);
|
|
|
|
for (size_t i = 0; config_addr[i]; i++) {
|
|
if (!strncmp(&config_addr[i], key, key_len) && config_addr[i + key_len] == '=') {
|
|
if (i && config_addr[i - 1] != SEPARATOR)
|
|
continue;
|
|
if (index--)
|
|
continue;
|
|
i += key_len + 1;
|
|
size_t j;
|
|
for (j = 0; config_addr[i + j] != SEPARATOR && config_addr[i + j]; j++) {
|
|
if (j == limit - 1)
|
|
break;
|
|
buf[j] = config_addr[i + j];
|
|
}
|
|
buf[j] = 0;
|
|
return buf;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|