godot/platform/android/file_access_jandroid.cpp
Rémi Verschelde a7f49ac9a1 Update copyright statements to 2020
Happy new year to the wonderful Godot community!

We're starting a new decade with a well-established, non-profit, free
and open source game engine, and tons of further improvements in the
pipeline from hundreds of contributors.

Godot will keep getting better, and we're looking forward to all the
games that the community will keep developing and releasing with it.
2020-01-01 11:16:22 +01:00

213 lines
6.7 KiB
C++

/*************************************************************************/
/* file_access_jandroid.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "file_access_jandroid.h"
#include "core/os/os.h"
#include "thread_jandroid.h"
#include <unistd.h>
jobject FileAccessJAndroid::io = NULL;
jclass FileAccessJAndroid::cls;
jmethodID FileAccessJAndroid::_file_open = 0;
jmethodID FileAccessJAndroid::_file_get_size = 0;
jmethodID FileAccessJAndroid::_file_seek = 0;
jmethodID FileAccessJAndroid::_file_read = 0;
jmethodID FileAccessJAndroid::_file_tell = 0;
jmethodID FileAccessJAndroid::_file_eof = 0;
jmethodID FileAccessJAndroid::_file_close = 0;
FileAccess *FileAccessJAndroid::create_jandroid() {
return memnew(FileAccessJAndroid);
}
Error FileAccessJAndroid::_open(const String &p_path, int p_mode_flags) {
if (is_open())
close();
String path = fix_path(p_path).simplify_path();
if (path.begins_with("/"))
path = path.substr(1, path.length());
else if (path.begins_with("res://"))
path = path.substr(6, path.length());
JNIEnv *env = ThreadAndroid::get_env();
jstring js = env->NewStringUTF(path.utf8().get_data());
int res = env->CallIntMethod(io, _file_open, js, (p_mode_flags & WRITE) ? true : false);
env->DeleteLocalRef(js);
OS::get_singleton()->print("fopen: '%s' ret %i\n", path.utf8().get_data(), res);
if (res <= 0)
return ERR_FILE_CANT_OPEN;
id = res;
return OK;
}
void FileAccessJAndroid::close() {
if (!is_open())
return;
JNIEnv *env = ThreadAndroid::get_env();
env->CallVoidMethod(io, _file_close, id);
id = 0;
}
bool FileAccessJAndroid::is_open() const {
return id != 0;
}
void FileAccessJAndroid::seek(size_t p_position) {
JNIEnv *env = ThreadAndroid::get_env();
ERR_FAIL_COND_MSG(!is_open(), "File must be opened before use.");
env->CallVoidMethod(io, _file_seek, id, p_position);
}
void FileAccessJAndroid::seek_end(int64_t p_position) {
ERR_FAIL_COND_MSG(!is_open(), "File must be opened before use.");
seek(get_len());
}
size_t FileAccessJAndroid::get_position() const {
JNIEnv *env = ThreadAndroid::get_env();
ERR_FAIL_COND_V_MSG(!is_open(), 0, "File must be opened before use.");
return env->CallIntMethod(io, _file_tell, id);
}
size_t FileAccessJAndroid::get_len() const {
JNIEnv *env = ThreadAndroid::get_env();
ERR_FAIL_COND_V_MSG(!is_open(), 0, "File must be opened before use.");
return env->CallIntMethod(io, _file_get_size, id);
}
bool FileAccessJAndroid::eof_reached() const {
JNIEnv *env = ThreadAndroid::get_env();
ERR_FAIL_COND_V_MSG(!is_open(), 0, "File must be opened before use.");
return env->CallIntMethod(io, _file_eof, id);
}
uint8_t FileAccessJAndroid::get_8() const {
ERR_FAIL_COND_V_MSG(!is_open(), 0, "File must be opened before use.");
uint8_t byte;
get_buffer(&byte, 1);
return byte;
}
int FileAccessJAndroid::get_buffer(uint8_t *p_dst, int p_length) const {
ERR_FAIL_COND_V_MSG(!is_open(), 0, "File must be opened before use.");
if (p_length == 0)
return 0;
JNIEnv *env = ThreadAndroid::get_env();
jbyteArray jca = (jbyteArray)env->CallObjectMethod(io, _file_read, id, p_length);
int len = env->GetArrayLength(jca);
env->GetByteArrayRegion(jca, 0, len, (jbyte *)p_dst);
env->DeleteLocalRef((jobject)jca);
return len;
}
Error FileAccessJAndroid::get_error() const {
if (eof_reached())
return ERR_FILE_EOF;
return OK;
}
void FileAccessJAndroid::flush() {
}
void FileAccessJAndroid::store_8(uint8_t p_dest) {
}
bool FileAccessJAndroid::file_exists(const String &p_path) {
JNIEnv *env = ThreadAndroid::get_env();
String path = fix_path(p_path).simplify_path();
if (path.begins_with("/"))
path = path.substr(1, path.length());
else if (path.begins_with("res://"))
path = path.substr(6, path.length());
jstring js = env->NewStringUTF(path.utf8().get_data());
int res = env->CallIntMethod(io, _file_open, js, false);
if (res <= 0) {
env->DeleteLocalRef(js);
return false;
}
env->CallVoidMethod(io, _file_close, res);
env->DeleteLocalRef(js);
return true;
}
void FileAccessJAndroid::setup(jobject p_io) {
io = p_io;
JNIEnv *env = ThreadAndroid::get_env();
jclass c = env->GetObjectClass(io);
cls = (jclass)env->NewGlobalRef(c);
_file_open = env->GetMethodID(cls, "file_open", "(Ljava/lang/String;Z)I");
_file_get_size = env->GetMethodID(cls, "file_get_size", "(I)I");
_file_tell = env->GetMethodID(cls, "file_tell", "(I)I");
_file_eof = env->GetMethodID(cls, "file_eof", "(I)Z");
_file_seek = env->GetMethodID(cls, "file_seek", "(II)V");
_file_read = env->GetMethodID(cls, "file_read", "(II)[B");
_file_close = env->GetMethodID(cls, "file_close", "(I)V");
}
FileAccessJAndroid::FileAccessJAndroid() {
id = 0;
}
FileAccessJAndroid::~FileAccessJAndroid() {
if (is_open())
close();
}