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#define _XOPEN_SOURCE
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <syslog.h>
#include <time.h>
#include "keyword.h"
#include "macros.h"
#include "misc.h"
void *get_keyword_offset_ptr(const keyword *key, void *ptr) {
char *ret = (char *)(ptr+key->offsets[0]);
for (int i = 1; (int64_t)key->offsets[i] >= 0; ++i) {
ret = *(char **)(ret+key->offsets[i]);
}
return (void *)ret;
}
keyword_val get_keyword_value(const keyword *key, char *value, int *error) {
keyword_val val = {0};
int dummy = 0;
error = (error != NULL) ? error : &dummy;
*error = 0;
switch (key->type) {
case TYPE_INT :
case TYPE_BOOL : val.i = strtol(value, NULL, 0); break;
case TYPE_TIME :
if (key->time_fmt != NULL) {
struct tm tm = {0};
if (strptime(value, key->time_fmt, &tm) != NULL) {
tm.tm_isdst = -1;
val.t = mktime(&tm);
} else {
*error = 3;
}
} else {
*error = 4;
}
break;
case TYPE_STRING: val.str = make_str(value); break;
case TYPE_FLOAT : val.f = strtof(value, NULL); break;
default : *error = 2; break;
}
return val;
}
int set_keyword(const keyword *key, keyword_val val, void *ret, void *ctx) {
const int callback_ret = (key->callback != NULL) ? key->callback(ctx, ret, key, val) : 0;
if (callback_ret < 0 || callback_ret > 0) {
return (callback_ret > 0) ? 0 : 5;
} else {
char *tmp_ret = (char *)get_keyword_offset_ptr(key, ret);
switch (key->type) {
case TYPE_INT :
case TYPE_BOOL : *(int *)tmp_ret = val.i; break;
case TYPE_TIME : *(time_t *)tmp_ret = val.t; break;
case TYPE_STRING: *(char **)tmp_ret = val.str; break;
case TYPE_FLOAT : *(float *)tmp_ret = val.f; break;
default : return 6; break;
}
return 0;
}
}
keyword_val parse_keyword(const keyword *key, char *key_str, char *value, int *error) {
int dummy = 0;
error = (error != NULL) ? error : &dummy;
if (!strcmp(key->key, key_str)) {
return get_keyword_value(key, value, error);
} else {
*error = 1;
return (keyword_val){0};
}
}
int parse_keywords(const keyword **keys, char *key, char *value, void *ret, void *ctx) {
keyword_val val = {0};
int error = 0;
for (int i = 0; keys[i] != NULL; ++i) {
val = parse_keyword(keys[i], key, value, &error);
if (!error) {
return set_keyword(keys[i], val, ret, ctx);
}
}
return error;
}
int parse_key_value_file(void *ret, void *ctx, const keyword **keywords, char *buf, const char *delm, parse_callback *parse_cb) {
if (buf != NULL) {
int ret_val = 0;
for (;;) {
char *lhs, *rhs;
lhs = strtok_r(skip_whitespace(buf), delm, &buf);
lhs = strtok_r(lhs, " \t\v\r\n", &rhs);
if (is_empty(lhs) || is_empty(buf)) {
break;
} else {
int error;
char *tmp = skip_whitespace(buf);
if (*tmp == '\"' || *tmp == '\'') {
const char *delm = (*tmp == '\"') ? "\"" : "\'";
rhs = get_str_delm_range(tmp, delm, delm, &buf);
} else {
rhs = strtok_r(tmp, "\n", &buf);
rhs = remove_trailing_whitespace(rhs);
}
if (error = parse_keywords(keywords, lhs, rhs, ret, ctx)) {
log(LOG_WARNING, "Failed to parse keyword \"%s\". Error code: %i", lhs, error);
ret_val = error;
}
}
if (parse_cb != NULL) {
if (parse_cb(&ret, ctx, buf) < 0) {
ret_val = 7;
break;
}
}
}
return ret_val;
} else {
return 8;
}
}
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