diff options
Diffstat (limited to 'platform/android/file_access_filesystem_jandroid.cpp')
| -rw-r--r-- | platform/android/file_access_filesystem_jandroid.cpp | 344 |
1 files changed, 344 insertions, 0 deletions
diff --git a/platform/android/file_access_filesystem_jandroid.cpp b/platform/android/file_access_filesystem_jandroid.cpp new file mode 100644 index 0000000000..56561cb616 --- /dev/null +++ b/platform/android/file_access_filesystem_jandroid.cpp @@ -0,0 +1,344 @@ +/*************************************************************************/ +/* file_access_filesystem_jandroid.cpp */ +/*************************************************************************/ +/* This file is part of: */ +/* GODOT ENGINE */ +/* https://godotengine.org */ +/*************************************************************************/ +/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */ +/* Copyright (c) 2014-2022 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_filesystem_jandroid.h" + +#include "core/os/os.h" +#include "core/templates/local_vector.h" +#include "thread_jandroid.h" + +#include <unistd.h> + +jobject FileAccessFilesystemJAndroid::file_access_handler = nullptr; +jclass FileAccessFilesystemJAndroid::cls; + +jmethodID FileAccessFilesystemJAndroid::_file_open = nullptr; +jmethodID FileAccessFilesystemJAndroid::_file_get_size = nullptr; +jmethodID FileAccessFilesystemJAndroid::_file_seek = nullptr; +jmethodID FileAccessFilesystemJAndroid::_file_seek_end = nullptr; +jmethodID FileAccessFilesystemJAndroid::_file_read = nullptr; +jmethodID FileAccessFilesystemJAndroid::_file_tell = nullptr; +jmethodID FileAccessFilesystemJAndroid::_file_eof = nullptr; +jmethodID FileAccessFilesystemJAndroid::_file_set_eof = nullptr; +jmethodID FileAccessFilesystemJAndroid::_file_close = nullptr; +jmethodID FileAccessFilesystemJAndroid::_file_write = nullptr; +jmethodID FileAccessFilesystemJAndroid::_file_flush = nullptr; +jmethodID FileAccessFilesystemJAndroid::_file_exists = nullptr; +jmethodID FileAccessFilesystemJAndroid::_file_last_modified = nullptr; + +String FileAccessFilesystemJAndroid::get_path() const { + return path_src; +} + +String FileAccessFilesystemJAndroid::get_path_absolute() const { + return absolute_path; +} + +Error FileAccessFilesystemJAndroid::_open(const String &p_path, int p_mode_flags) { + if (is_open()) { + _close(); + } + + if (_file_open) { + JNIEnv *env = get_jni_env(); + ERR_FAIL_COND_V(env == nullptr, ERR_UNCONFIGURED); + + String path = fix_path(p_path).simplify_path(); + jstring js = env->NewStringUTF(path.utf8().get_data()); + int res = env->CallIntMethod(file_access_handler, _file_open, js, p_mode_flags); + env->DeleteLocalRef(js); + + if (res <= 0) { + switch (res) { + case 0: + default: + return ERR_FILE_CANT_OPEN; + + case -1: + return ERR_FILE_NOT_FOUND; + } + } + + id = res; + path_src = p_path; + absolute_path = path; + return OK; + } else { + return ERR_UNCONFIGURED; + } +} + +void FileAccessFilesystemJAndroid::_close() { + if (!is_open()) { + return; + } + + if (_file_close) { + JNIEnv *env = get_jni_env(); + ERR_FAIL_COND(env == nullptr); + env->CallVoidMethod(file_access_handler, _file_close, id); + } + id = 0; +} + +bool FileAccessFilesystemJAndroid::is_open() const { + return id != 0; +} + +void FileAccessFilesystemJAndroid::seek(uint64_t p_position) { + if (_file_seek) { + JNIEnv *env = get_jni_env(); + ERR_FAIL_COND(env == nullptr); + ERR_FAIL_COND_MSG(!is_open(), "File must be opened before use."); + env->CallVoidMethod(file_access_handler, _file_seek, id, p_position); + } +} + +void FileAccessFilesystemJAndroid::seek_end(int64_t p_position) { + if (_file_seek_end) { + JNIEnv *env = get_jni_env(); + ERR_FAIL_COND(env == nullptr); + ERR_FAIL_COND_MSG(!is_open(), "File must be opened before use."); + env->CallVoidMethod(file_access_handler, _file_seek_end, id, p_position); + } +} + +uint64_t FileAccessFilesystemJAndroid::get_position() const { + if (_file_tell) { + JNIEnv *env = get_jni_env(); + ERR_FAIL_COND_V(env == nullptr, 0); + ERR_FAIL_COND_V_MSG(!is_open(), 0, "File must be opened before use."); + return env->CallLongMethod(file_access_handler, _file_tell, id); + } else { + return 0; + } +} + +uint64_t FileAccessFilesystemJAndroid::get_length() const { + if (_file_get_size) { + JNIEnv *env = get_jni_env(); + ERR_FAIL_COND_V(env == nullptr, 0); + ERR_FAIL_COND_V_MSG(!is_open(), 0, "File must be opened before use."); + return env->CallLongMethod(file_access_handler, _file_get_size, id); + } else { + return 0; + } +} + +bool FileAccessFilesystemJAndroid::eof_reached() const { + if (_file_eof) { + JNIEnv *env = get_jni_env(); + ERR_FAIL_COND_V(env == nullptr, false); + ERR_FAIL_COND_V_MSG(!is_open(), false, "File must be opened before use."); + return env->CallBooleanMethod(file_access_handler, _file_eof, id); + } else { + return false; + } +} + +void FileAccessFilesystemJAndroid::_set_eof(bool eof) { + if (_file_set_eof) { + ERR_FAIL_COND_MSG(!is_open(), "File must be opened before use."); + + JNIEnv *env = get_jni_env(); + ERR_FAIL_COND(env == nullptr); + env->CallVoidMethod(file_access_handler, _file_set_eof, id, eof); + } +} + +uint8_t FileAccessFilesystemJAndroid::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; +} + +String FileAccessFilesystemJAndroid::get_line() const { + ERR_FAIL_COND_V_MSG(!is_open(), String(), "File must be opened before use."); + + const size_t buffer_size_limit = 2048; + const uint64_t file_size = get_length(); + const uint64_t start_position = get_position(); + + String result; + LocalVector<uint8_t> line_buffer; + size_t current_buffer_size = 0; + uint64_t line_buffer_position = 0; + + while (true) { + size_t line_buffer_size = MIN(buffer_size_limit, file_size - get_position()); + if (line_buffer_size <= 0) { + const_cast<FileAccessFilesystemJAndroid *>(this)->_set_eof(true); + break; + } + + current_buffer_size += line_buffer_size; + line_buffer.resize(current_buffer_size); + + uint64_t bytes_read = get_buffer(&line_buffer[line_buffer_position], current_buffer_size - line_buffer_position); + if (bytes_read <= 0) { + break; + } + + for (; bytes_read > 0; line_buffer_position++, bytes_read--) { + uint8_t elem = line_buffer[line_buffer_position]; + if (elem == '\n' || elem == '\0') { + // Found the end of the line + const_cast<FileAccessFilesystemJAndroid *>(this)->seek(start_position + line_buffer_position + 1); + if (result.parse_utf8((const char *)line_buffer.ptr(), line_buffer_position, true)) { + return String(); + } + return result; + } + } + } + + if (result.parse_utf8((const char *)line_buffer.ptr(), line_buffer_position, true)) { + return String(); + } + return result; +} + +uint64_t FileAccessFilesystemJAndroid::get_buffer(uint8_t *p_dst, uint64_t p_length) const { + if (_file_read) { + ERR_FAIL_COND_V_MSG(!is_open(), 0, "File must be opened before use."); + if (p_length == 0) { + return 0; + } + + JNIEnv *env = get_jni_env(); + ERR_FAIL_COND_V(env == nullptr, 0); + + jobject j_buffer = env->NewDirectByteBuffer(p_dst, p_length); + int length = env->CallIntMethod(file_access_handler, _file_read, id, j_buffer); + env->DeleteLocalRef(j_buffer); + return length; + } else { + return 0; + } +} + +void FileAccessFilesystemJAndroid::store_8(uint8_t p_dest) { + store_buffer(&p_dest, 1); +} + +void FileAccessFilesystemJAndroid::store_buffer(const uint8_t *p_src, uint64_t p_length) { + if (_file_write) { + ERR_FAIL_COND_MSG(!is_open(), "File must be opened before use."); + if (p_length == 0) { + return; + } + + JNIEnv *env = get_jni_env(); + ERR_FAIL_COND(env == nullptr); + + jobject j_buffer = env->NewDirectByteBuffer((void *)p_src, p_length); + env->CallVoidMethod(file_access_handler, _file_write, id, j_buffer); + env->DeleteLocalRef(j_buffer); + } +} + +Error FileAccessFilesystemJAndroid::get_error() const { + if (eof_reached()) { + return ERR_FILE_EOF; + } + return OK; +} + +void FileAccessFilesystemJAndroid::flush() { + if (_file_flush) { + JNIEnv *env = get_jni_env(); + ERR_FAIL_COND(env == nullptr); + ERR_FAIL_COND_MSG(!is_open(), "File must be opened before use."); + env->CallVoidMethod(file_access_handler, _file_flush, id); + } +} + +bool FileAccessFilesystemJAndroid::file_exists(const String &p_path) { + if (_file_exists) { + JNIEnv *env = get_jni_env(); + ERR_FAIL_COND_V(env == nullptr, false); + + String path = fix_path(p_path).simplify_path(); + jstring js = env->NewStringUTF(path.utf8().get_data()); + bool result = env->CallBooleanMethod(file_access_handler, _file_exists, js); + env->DeleteLocalRef(js); + return result; + } else { + return false; + } +} + +uint64_t FileAccessFilesystemJAndroid::_get_modified_time(const String &p_file) { + if (_file_last_modified) { + JNIEnv *env = get_jni_env(); + ERR_FAIL_COND_V(env == nullptr, false); + + String path = fix_path(p_file).simplify_path(); + jstring js = env->NewStringUTF(path.utf8().get_data()); + uint64_t result = env->CallLongMethod(file_access_handler, _file_last_modified, js); + env->DeleteLocalRef(js); + return result; + } else { + return 0; + } +} + +void FileAccessFilesystemJAndroid::setup(jobject p_file_access_handler) { + JNIEnv *env = get_jni_env(); + file_access_handler = env->NewGlobalRef(p_file_access_handler); + + jclass c = env->GetObjectClass(file_access_handler); + cls = (jclass)env->NewGlobalRef(c); + + _file_open = env->GetMethodID(cls, "fileOpen", "(Ljava/lang/String;I)I"); + _file_get_size = env->GetMethodID(cls, "fileGetSize", "(I)J"); + _file_tell = env->GetMethodID(cls, "fileGetPosition", "(I)J"); + _file_eof = env->GetMethodID(cls, "isFileEof", "(I)Z"); + _file_set_eof = env->GetMethodID(cls, "setFileEof", "(IZ)V"); + _file_seek = env->GetMethodID(cls, "fileSeek", "(IJ)V"); + _file_seek_end = env->GetMethodID(cls, "fileSeekFromEnd", "(IJ)V"); + _file_read = env->GetMethodID(cls, "fileRead", "(ILjava/nio/ByteBuffer;)I"); + _file_close = env->GetMethodID(cls, "fileClose", "(I)V"); + _file_write = env->GetMethodID(cls, "fileWrite", "(ILjava/nio/ByteBuffer;)V"); + _file_flush = env->GetMethodID(cls, "fileFlush", "(I)V"); + _file_exists = env->GetMethodID(cls, "fileExists", "(Ljava/lang/String;)Z"); + _file_last_modified = env->GetMethodID(cls, "fileLastModified", "(Ljava/lang/String;)J"); +} + +FileAccessFilesystemJAndroid::FileAccessFilesystemJAndroid() { + id = 0; +} + +FileAccessFilesystemJAndroid::~FileAccessFilesystemJAndroid() { + if (is_open()) { + _close(); + } +} |