/*
* Copyright (C) 2021 P. J. McDermott
*
* This file is part of Dodge Balls
*
* Dodge Balls is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Dodge Balls is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Dodge Balls. If not, see .
*/
#include
#include
#include
#include
#include "dirs.h"
#include "map.h"
#include "output.h"
#include "xml.h"
struct db_map {
};
static char *
_db_map_path(const char *game_id, const char *file, const char *ext)
{
const char *games_dir;
char *path;
games_dir = db_get_games_dir();
path = malloc((strlen(games_dir) + strlen(game_id) + strlen(file) +
strlen(ext) + 3) * sizeof(*path));
if (path == NULL) {
db_err("Failed to allocate memory");
return NULL;
}
sprintf(path, "%s/%s/%s%s", games_dir, game_id, file, ext);
return path;
}
static void XMLCALL
_db_tmx_invalid_end(void *pv, const char *name)
{
XML_Parser p;
db_dbg(" %s> (invalid)", name);
p = (XML_Parser) pv;
db_xml_node_pop(p);
}
static void XMLCALL
_db_tmx_invalid_start(void *pv, const char *name,
const char **attr __attribute__((__unused__)))
{
XML_Parser p;
db_dbg(" <%s> (invalid)", name);
p = (XML_Parser) pv;
db_xml_node_push(p, NULL, _db_tmx_invalid_start,
_db_tmx_invalid_end, NULL);
}
static void XMLCALL
_db_tmx_map_end(void *pv, const char *name)
{
XML_Parser p;
db_dbg(" %s> (map)", name);
p = (XML_Parser) pv;
if (db_xml_check_tag(name, "map")) {
db_xml_node_pop(p);
} else {
db_xml_unexpected_end_tag(p, name, "map");
}
}
static void XMLCALL
_db_tmx_map_start(void *pv, const char *name,
const char **attr __attribute__((__unused__)))
{
XML_Parser p;
struct db_map *map;
db_dbg(" <%s> (map)", name);
p = (XML_Parser) pv;
map = db_xml_node_peek(p);
if (db_xml_check_tag(name, "map")) {
db_xml_node_push(p, map, _db_tmx_invalid_start,
_db_tmx_map_end, NULL);
} else {
db_xml_unexpected_start_tag(p, name, "map");
}
}
struct db_map *
db_map_new(const char *game_id, const char *level_id)
{
struct db_map *map;
XML_Parser p;
char *path;
FILE *fp;
void *buf;
size_t len;
enum XML_Status status;
map = calloc(1, sizeof(*map));
if (map == NULL) {
db_err("Failed to allocate memory");
return NULL;
}
p = XML_ParserCreate(NULL);
if (p == NULL) {
free(map);
return NULL;
}
XML_UseParserAsHandlerArg(p);
db_xml_node_push(p, map, _db_tmx_map_start, _db_tmx_invalid_end, NULL);
path = _db_map_path(game_id, level_id, ".tmx");
if (path == NULL) {
db_xml_node_pop(p);
XML_ParserFree(p);
free(path);
free(map);
return NULL;
}
fp = fopen(path, "rb");
if (fp == NULL) {
db_xml_node_pop(p);
XML_ParserFree(p);
free(path);
free(map);
return NULL;
}
buf = XML_GetBuffer(p, 8192);
if (buf == NULL) {
db_xml_node_pop(p);
XML_ParserFree(p);
free(path);
fclose(fp);
free(map);
return NULL;
}
db_dbg("Parsing <%s>:", path);
free(path);
while (!feof(fp)) {
len = fread(buf, 1, 8192, fp);
status = XML_ParseBuffer(p, len, feof(fp));
if (status == XML_STATUS_OK) {
continue;
}
db_err("Failed to parse map information (%s)",
XML_ErrorString(XML_GetErrorCode(p)));
db_xml_node_pop(p);
XML_ParserFree(p);
fclose(fp);
free(map);
return NULL;
}
db_dbg("Parsing done");
db_xml_node_pop(p);
XML_ParserFree(p);
fclose(fp);
return map;
}