d95794ec8a
As many open source projects have started doing it, we're removing the current year from the copyright notice, so that we don't need to bump it every year. It seems like only the first year of publication is technically relevant for copyright notices, and even that seems to be something that many companies stopped listing altogether (in a version controlled codebase, the commits are a much better source of date of publication than a hardcoded copyright statement). We also now list Godot Engine contributors first as we're collectively the current maintainers of the project, and we clarify that the "exclusive" copyright of the co-founders covers the timespan before opensourcing (their further contributions are included as part of Godot Engine contributors). Also fixed "cf." Frenchism - it's meant as "refer to / see".
344 lines
11 KiB
C++
344 lines
11 KiB
C++
/**************************************************************************/
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/* file_access_filesystem_jandroid.cpp */
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/**************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/**************************************************************************/
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/**************************************************************************/
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#include "file_access_filesystem_jandroid.h"
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#include "core/os/os.h"
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#include "core/templates/local_vector.h"
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#include "thread_jandroid.h"
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#include <unistd.h>
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jobject FileAccessFilesystemJAndroid::file_access_handler = nullptr;
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jclass FileAccessFilesystemJAndroid::cls;
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jmethodID FileAccessFilesystemJAndroid::_file_open = nullptr;
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jmethodID FileAccessFilesystemJAndroid::_file_get_size = nullptr;
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jmethodID FileAccessFilesystemJAndroid::_file_seek = nullptr;
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jmethodID FileAccessFilesystemJAndroid::_file_seek_end = nullptr;
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jmethodID FileAccessFilesystemJAndroid::_file_read = nullptr;
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jmethodID FileAccessFilesystemJAndroid::_file_tell = nullptr;
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jmethodID FileAccessFilesystemJAndroid::_file_eof = nullptr;
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jmethodID FileAccessFilesystemJAndroid::_file_set_eof = nullptr;
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jmethodID FileAccessFilesystemJAndroid::_file_close = nullptr;
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jmethodID FileAccessFilesystemJAndroid::_file_write = nullptr;
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jmethodID FileAccessFilesystemJAndroid::_file_flush = nullptr;
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jmethodID FileAccessFilesystemJAndroid::_file_exists = nullptr;
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jmethodID FileAccessFilesystemJAndroid::_file_last_modified = nullptr;
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String FileAccessFilesystemJAndroid::get_path() const {
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return path_src;
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}
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String FileAccessFilesystemJAndroid::get_path_absolute() const {
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return absolute_path;
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}
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Error FileAccessFilesystemJAndroid::open_internal(const String &p_path, int p_mode_flags) {
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if (is_open()) {
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_close();
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}
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if (_file_open) {
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JNIEnv *env = get_jni_env();
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ERR_FAIL_COND_V(env == nullptr, ERR_UNCONFIGURED);
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String path = fix_path(p_path).simplify_path();
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jstring js = env->NewStringUTF(path.utf8().get_data());
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int res = env->CallIntMethod(file_access_handler, _file_open, js, p_mode_flags);
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env->DeleteLocalRef(js);
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if (res <= 0) {
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switch (res) {
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case 0:
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default:
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return ERR_FILE_CANT_OPEN;
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case -1:
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return ERR_FILE_NOT_FOUND;
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}
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}
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id = res;
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path_src = p_path;
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absolute_path = path;
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return OK;
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} else {
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return ERR_UNCONFIGURED;
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}
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}
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void FileAccessFilesystemJAndroid::_close() {
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if (!is_open()) {
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return;
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}
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if (_file_close) {
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JNIEnv *env = get_jni_env();
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ERR_FAIL_COND(env == nullptr);
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env->CallVoidMethod(file_access_handler, _file_close, id);
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}
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id = 0;
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}
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bool FileAccessFilesystemJAndroid::is_open() const {
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return id != 0;
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}
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void FileAccessFilesystemJAndroid::seek(uint64_t p_position) {
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if (_file_seek) {
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JNIEnv *env = get_jni_env();
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ERR_FAIL_COND(env == nullptr);
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ERR_FAIL_COND_MSG(!is_open(), "File must be opened before use.");
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env->CallVoidMethod(file_access_handler, _file_seek, id, p_position);
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}
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}
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void FileAccessFilesystemJAndroid::seek_end(int64_t p_position) {
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if (_file_seek_end) {
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JNIEnv *env = get_jni_env();
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ERR_FAIL_COND(env == nullptr);
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ERR_FAIL_COND_MSG(!is_open(), "File must be opened before use.");
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env->CallVoidMethod(file_access_handler, _file_seek_end, id, p_position);
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}
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}
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uint64_t FileAccessFilesystemJAndroid::get_position() const {
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if (_file_tell) {
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JNIEnv *env = get_jni_env();
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ERR_FAIL_COND_V(env == nullptr, 0);
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ERR_FAIL_COND_V_MSG(!is_open(), 0, "File must be opened before use.");
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return env->CallLongMethod(file_access_handler, _file_tell, id);
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} else {
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return 0;
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}
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}
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uint64_t FileAccessFilesystemJAndroid::get_length() const {
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if (_file_get_size) {
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JNIEnv *env = get_jni_env();
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ERR_FAIL_COND_V(env == nullptr, 0);
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ERR_FAIL_COND_V_MSG(!is_open(), 0, "File must be opened before use.");
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return env->CallLongMethod(file_access_handler, _file_get_size, id);
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} else {
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return 0;
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}
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}
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bool FileAccessFilesystemJAndroid::eof_reached() const {
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if (_file_eof) {
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JNIEnv *env = get_jni_env();
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ERR_FAIL_COND_V(env == nullptr, false);
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ERR_FAIL_COND_V_MSG(!is_open(), false, "File must be opened before use.");
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return env->CallBooleanMethod(file_access_handler, _file_eof, id);
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} else {
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return false;
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}
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}
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void FileAccessFilesystemJAndroid::_set_eof(bool eof) {
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if (_file_set_eof) {
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ERR_FAIL_COND_MSG(!is_open(), "File must be opened before use.");
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JNIEnv *env = get_jni_env();
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ERR_FAIL_COND(env == nullptr);
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env->CallVoidMethod(file_access_handler, _file_set_eof, id, eof);
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}
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}
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uint8_t FileAccessFilesystemJAndroid::get_8() const {
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ERR_FAIL_COND_V_MSG(!is_open(), 0, "File must be opened before use.");
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uint8_t byte;
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get_buffer(&byte, 1);
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return byte;
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}
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String FileAccessFilesystemJAndroid::get_line() const {
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ERR_FAIL_COND_V_MSG(!is_open(), String(), "File must be opened before use.");
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const size_t buffer_size_limit = 2048;
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const uint64_t file_size = get_length();
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const uint64_t start_position = get_position();
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String result;
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LocalVector<uint8_t> line_buffer;
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size_t current_buffer_size = 0;
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uint64_t line_buffer_position = 0;
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while (true) {
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size_t line_buffer_size = MIN(buffer_size_limit, file_size - get_position());
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if (line_buffer_size <= 0) {
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const_cast<FileAccessFilesystemJAndroid *>(this)->_set_eof(true);
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break;
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}
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current_buffer_size += line_buffer_size;
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line_buffer.resize(current_buffer_size);
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uint64_t bytes_read = get_buffer(&line_buffer[line_buffer_position], current_buffer_size - line_buffer_position);
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if (bytes_read <= 0) {
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break;
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}
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for (; bytes_read > 0; line_buffer_position++, bytes_read--) {
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uint8_t elem = line_buffer[line_buffer_position];
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if (elem == '\n' || elem == '\0') {
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// Found the end of the line
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const_cast<FileAccessFilesystemJAndroid *>(this)->seek(start_position + line_buffer_position + 1);
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if (result.parse_utf8((const char *)line_buffer.ptr(), line_buffer_position, true)) {
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return String();
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}
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return result;
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}
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}
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}
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if (result.parse_utf8((const char *)line_buffer.ptr(), line_buffer_position, true)) {
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return String();
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}
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return result;
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}
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uint64_t FileAccessFilesystemJAndroid::get_buffer(uint8_t *p_dst, uint64_t p_length) const {
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if (_file_read) {
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ERR_FAIL_COND_V_MSG(!is_open(), 0, "File must be opened before use.");
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if (p_length == 0) {
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return 0;
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}
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JNIEnv *env = get_jni_env();
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ERR_FAIL_COND_V(env == nullptr, 0);
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jobject j_buffer = env->NewDirectByteBuffer(p_dst, p_length);
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int length = env->CallIntMethod(file_access_handler, _file_read, id, j_buffer);
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env->DeleteLocalRef(j_buffer);
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return length;
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} else {
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return 0;
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}
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}
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void FileAccessFilesystemJAndroid::store_8(uint8_t p_dest) {
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store_buffer(&p_dest, 1);
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}
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void FileAccessFilesystemJAndroid::store_buffer(const uint8_t *p_src, uint64_t p_length) {
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if (_file_write) {
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ERR_FAIL_COND_MSG(!is_open(), "File must be opened before use.");
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if (p_length == 0) {
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return;
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}
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JNIEnv *env = get_jni_env();
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ERR_FAIL_COND(env == nullptr);
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jobject j_buffer = env->NewDirectByteBuffer((void *)p_src, p_length);
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env->CallVoidMethod(file_access_handler, _file_write, id, j_buffer);
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env->DeleteLocalRef(j_buffer);
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}
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}
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Error FileAccessFilesystemJAndroid::get_error() const {
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if (eof_reached()) {
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return ERR_FILE_EOF;
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}
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return OK;
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}
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void FileAccessFilesystemJAndroid::flush() {
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if (_file_flush) {
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JNIEnv *env = get_jni_env();
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ERR_FAIL_COND(env == nullptr);
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ERR_FAIL_COND_MSG(!is_open(), "File must be opened before use.");
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env->CallVoidMethod(file_access_handler, _file_flush, id);
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}
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}
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bool FileAccessFilesystemJAndroid::file_exists(const String &p_path) {
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if (_file_exists) {
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JNIEnv *env = get_jni_env();
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ERR_FAIL_COND_V(env == nullptr, false);
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String path = fix_path(p_path).simplify_path();
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jstring js = env->NewStringUTF(path.utf8().get_data());
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bool result = env->CallBooleanMethod(file_access_handler, _file_exists, js);
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env->DeleteLocalRef(js);
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return result;
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} else {
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return false;
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}
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}
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uint64_t FileAccessFilesystemJAndroid::_get_modified_time(const String &p_file) {
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if (_file_last_modified) {
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JNIEnv *env = get_jni_env();
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ERR_FAIL_COND_V(env == nullptr, false);
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String path = fix_path(p_file).simplify_path();
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jstring js = env->NewStringUTF(path.utf8().get_data());
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uint64_t result = env->CallLongMethod(file_access_handler, _file_last_modified, js);
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env->DeleteLocalRef(js);
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return result;
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} else {
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return 0;
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}
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}
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void FileAccessFilesystemJAndroid::setup(jobject p_file_access_handler) {
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JNIEnv *env = get_jni_env();
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file_access_handler = env->NewGlobalRef(p_file_access_handler);
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jclass c = env->GetObjectClass(file_access_handler);
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cls = (jclass)env->NewGlobalRef(c);
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_file_open = env->GetMethodID(cls, "fileOpen", "(Ljava/lang/String;I)I");
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_file_get_size = env->GetMethodID(cls, "fileGetSize", "(I)J");
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_file_tell = env->GetMethodID(cls, "fileGetPosition", "(I)J");
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_file_eof = env->GetMethodID(cls, "isFileEof", "(I)Z");
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_file_set_eof = env->GetMethodID(cls, "setFileEof", "(IZ)V");
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_file_seek = env->GetMethodID(cls, "fileSeek", "(IJ)V");
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_file_seek_end = env->GetMethodID(cls, "fileSeekFromEnd", "(IJ)V");
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_file_read = env->GetMethodID(cls, "fileRead", "(ILjava/nio/ByteBuffer;)I");
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_file_close = env->GetMethodID(cls, "fileClose", "(I)V");
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_file_write = env->GetMethodID(cls, "fileWrite", "(ILjava/nio/ByteBuffer;)V");
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_file_flush = env->GetMethodID(cls, "fileFlush", "(I)V");
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_file_exists = env->GetMethodID(cls, "fileExists", "(Ljava/lang/String;)Z");
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_file_last_modified = env->GetMethodID(cls, "fileLastModified", "(Ljava/lang/String;)J");
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}
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FileAccessFilesystemJAndroid::FileAccessFilesystemJAndroid() {
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id = 0;
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}
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FileAccessFilesystemJAndroid::~FileAccessFilesystemJAndroid() {
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if (is_open()) {
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_close();
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}
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}
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