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#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <yaml.h>
#include <cJSON.h>
#include "idlist.h"
#include "vector.h"
#include "text.h"
static char *load_data_from_file(const char *filename)
{
int ret = 0;
FILE *file = NULL;
char *data = NULL;
file = fopen(filename, "rb");
if (file == NULL) {
perror(filename);
return NULL;
}
ret |= fseek(file, 0, SEEK_END);
long file_size = ftell(file);
ret |= fseek(file, 0, SEEK_SET);
if (ret == -1 || file_size == -1) {
perror("fseek/ftell");
goto cleanup_close;
}
data = calloc(file_size + 1, sizeof(char));
if (data == NULL) {
perror("calloc");
goto cleanup_close;
}
size_t nbyte = fread(data, sizeof(char), file_size, file);
if (nbyte == 0) {
perror("fread");
goto cleanup_free;
}
goto cleanup_close;
cleanup_free:
free(data);
data = NULL;
cleanup_close:
fclose(file);
return data;
}
static char *texts_cjson_get_string(cJSON *object, const char *key)
{
char *string = NULL;
cJSON *item = cJSON_GetObjectItem(object, key);
if (cJSON_IsString(item)) {
char *value = cJSON_GetStringValue(item);
if (value != NULL) {
size_t size = strlen(value) + 1;
string = calloc(size, sizeof(char));
if (string != NULL)
strncpy(string, value, size);
}
}
return string;
}
static int texts_cjson_get_int(cJSON *object, const char *key)
{
int value = 0;
cJSON *item = cJSON_GetObjectItem(object, key);
if (cJSON_IsNumber(item))
value = item->valueint;
return value;
}
struct idlist *load_texts_from_json(const char *filename)
{
struct cJSON_Hooks hooks = (struct cJSON_Hooks){
.malloc_fn = malloc,
.free_fn = free,
};
cJSON_InitHooks(&hooks);
char *data = load_data_from_file(filename);
if (data == NULL) {
return NULL;
}
struct idlist *texts = NULL;
struct idlist *texts_node = texts;
cJSON *json_data = cJSON_Parse(data);
if (cJSON_IsArray(json_data)) {
size_t array_size = cJSON_GetArraySize(json_data);
for (size_t i = 0; i < array_size; i++) {
cJSON *item = cJSON_GetArrayItem(json_data, i);
if (cJSON_IsObject(item)) {
/* Allocate texts node to be filled */
if (!texts) {
texts_node = texts = list_new();
} else {
texts_node = list_append(texts);
}
texts_node->obj = calloc(1, sizeof(struct text));
struct text *text = texts_node->obj;
/* Fill the node */
text->type = texts_cjson_get_string(item, "type");
text->scene = texts_cjson_get_string(item, "scene");
text->text = texts_cjson_get_string(item, "text");
text->font = texts_cjson_get_string(item, "font");
text->size = texts_cjson_get_int(item, "size");
text->pos.x = texts_cjson_get_int(item, "x");
text->pos.y = texts_cjson_get_int(item, "y");
}
}
}
free(data);
cJSON_Delete(json_data);
return texts;
}
static FILE *openFile(char *filename)
{
FILE *file;
if (!(file = fopen(filename, "rb"))){
printf("ERROR: file \"%s\"cannot be opened\n", filename);
exit(EXIT_FAILURE);
}
return file;
}
struct idlist *load_texts(char *filename)
{
FILE *file = openFile(filename);
yaml_parser_t parser;
yaml_event_t event;
yaml_parser_initialize(&parser);
yaml_parser_set_input_file(&parser, file);
struct idlist *texts = NULL;
struct idlist *texts_node = texts;
do {
if (!yaml_parser_parse(&parser, &event)) {
fprintf(stderr, "Parser error %d\n", parser.error);
exit(EXIT_FAILURE);
}
switch (event.type)
{
case YAML_MAPPING_START_EVENT:
if (!texts) {
texts = list_new();
texts_node = texts;
} else
texts_node = list_append(texts);
texts_node->obj = calloc(1, sizeof(struct text));
break;
case YAML_SCALAR_EVENT:
;yaml_event_t ev;
yaml_parser_parse(&parser, &ev);
while (ev.type != YAML_SCALAR_EVENT) {
yaml_event_delete(&ev);
if (!yaml_parser_parse(&parser, &ev)) {
fprintf(stderr, "Parser error %d\n", parser.error);
exit(EXIT_FAILURE);
}
}
struct text *text = texts_node->obj;
if (!strcmp((char *)event.data.scalar.value, "type")) {
text->type = malloc(sizeof(char)
* (strlen((char *)ev.data.scalar.value) + 1));
strcpy(text->type, (char *)ev.data.scalar.value);
} else if (!strcmp((char *)event.data.scalar.value, "scene")) {
text->scene = malloc(sizeof(char)
* (strlen((char *)ev.data.scalar.value) + 1));
strcpy(text->scene, (char *)ev.data.scalar.value);
} else if (!strcmp((char *)event.data.scalar.value, "text")) {
text->text = malloc(sizeof(char)
* (strlen((char *)ev.data.scalar.value) + 1));
strcpy(text->text, (char *)ev.data.scalar.value);
} else if (!strcmp((char *)event.data.scalar.value, "font")) {
text->font = malloc(sizeof(char)
* (strlen((char *)ev.data.scalar.value) + 1));
strcpy(text->font, (char *)ev.data.scalar.value);
} else if (!strcmp((char *)event.data.scalar.value, "size")) {
text->size = atoi((char *)ev.data.scalar.value);
} else if (!strcmp((char *)event.data.scalar.value, "x")) {
text->pos.x = atoi((char *)ev.data.scalar.value);
} else if (!strcmp((char *)event.data.scalar.value, "y")) {
text->pos.y = atoi((char *)ev.data.scalar.value);
}
yaml_event_delete(&ev);
break;
default:
break;
}
if (event.type != YAML_STREAM_END_EVENT)
yaml_event_delete(&event);
} while (event.type != YAML_STREAM_END_EVENT);
yaml_event_delete(&event);
yaml_parser_delete(&parser);
fclose(file);
return texts;
}
void text_destroy(void *obj)
{
struct text *text = obj;
if (text->type)
free(text->type);
if (text->scene)
free(text->scene);
if (text->text)
free(text->text);
if (text->font)
free(text->font);
free(text);
}
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