Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

10 files changed, 1112 insertions, 0 deletions

diff --git a/third_party/rust/android_logger/.cargo-checksum.json b/third_party/rust/android_logger/.cargo-checksum.json
new file mode 100644
index 0000000000..5f65e63940
--- /dev/null
+++ b/third_party/rust/android_logger/.cargo-checksum.json
@@ -0,0 +1 @@
+{"files":{"CHANGELOG.md":"66faf0eef7c262a90a0538248c0753b5bb7f6f38df086a3701db1590cc0e81a3","Cargo.toml":"35882b3da778c3a4464967f6142579b1378a4ab9ff83adebb151a606c5fdd9ed","LICENSE-APACHE":"99938c5864dd33decb62ab20fd883a9b00181d768ae887a4f19b2d0015c41dc9","LICENSE-MIT":"35043211d1b7be8f7e3f9cad27d981f2189ba9a39d9527b275b3c9740298dfe2","README.md":"dbdb2a11c4a49ec21259d611af2de6123fa9b3f467950eb7a5af163f8aea556b","src/lib.rs":"f820afaf0c15160756128018fb6eac94f74a8cf6359168346354d120c1204532","tests/config_log_level.rs":"61f12ee69f0a7e0e6c2b224d4b678f384ca0ee75122e62c01a9f75dbd9ba4437","tests/default_init.rs":"e5c77dbcf3dc2d9e21e5c48c190e6cdcdea7d8eecea8c8ce513ca98223c46b49","tests/multiple_init.rs":"b5fa06a0b92843227ecbb6285bdf7ab826412fd2fe11fac8b1fd68a7354fd3ee"},"package":"037f3e1da32ddba7770530e69258b742c15ad67bdf90e5f6b35f4b6db9a60eb7"}
\ No newline at end of file
diff --git a/third_party/rust/android_logger/CHANGELOG.md b/third_party/rust/android_logger/CHANGELOG.md
new file mode 100644
index 0000000000..4952ca18b5
--- /dev/null
+++ b/third_party/rust/android_logger/CHANGELOG.md
@@ -0,0 +1,54 @@
+`android_logger` changelog
+==========================
+
+All user visible changes to this project will be documented in this file. This project uses [Semantic Versioning 2.0.0].
+
+
+
+
+## [0.12.0] · 2023-01-19
+[0.12.0]: /../../tree/v0.12.0
+
+[Diff](/../../compare/v0.11.3...v0.12.0)
+
+### Added
+
+- `Config::with_max_level()` method to filters logs via `log::LevelFilter`. ([#62])
+
+### Deprecated
+
+- `Config::with_min_level()` method accepting `log::Level`. ([#62])
+
+### Fixed
+
+- Incorrect logs level filtering. ([#62])
+
+[#62]: /../../pull/62
+
+
+
+
+## [0.11.3] · 2022-12-20
+[0.11.3]: /../../tree/v0.11.3
+
+[Diff](/../../compare/38186ece1056d90b8f75fd2a5eb5c860e0a1704e...v0.11.3)
+
+### Fixed 
+
+- Broken compilation on [Android] targets. ([#59], [#58])
+
+[#58]: /../../issues/58
+[#59]: /../../pull/59
+
+
+
+
+## Previous releases
+
+See [Git log](/../../commits/master?after=1a5a07ec6742f0069acc2be223c1bb3b6a9d15f8+0).
+
+
+
+
+[Android]: https://www.android.com
+[Semantic Versioning 2.0.0]: https://semver.org
diff --git a/third_party/rust/android_logger/Cargo.toml b/third_party/rust/android_logger/Cargo.toml
new file mode 100644
index 0000000000..a9fd573be2
--- /dev/null
+++ b/third_party/rust/android_logger/Cargo.toml
@@ -0,0 +1,48 @@
+# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
+#
+# When uploading crates to the registry Cargo will automatically
+# "normalize" Cargo.toml files for maximal compatibility
+# with all versions of Cargo and also rewrite `path` dependencies
+# to registry (e.g., crates.io) dependencies.
+#
+# If you are reading this file be aware that the original Cargo.toml
+# will likely look very different (and much more reasonable).
+# See Cargo.toml.orig for the original contents.
+
+[package]
+name = "android_logger"
+version = "0.12.0"
+authors = ["The android_logger Developers"]
+description = """
+A logging implementation for `log` which hooks to android log output.
+"""
+readme = "README.md"
+keywords = [
+    "android",
+    "bindings",
+    "log",
+    "logger",
+]
+categories = ["api-bindings"]
+license = "MIT OR Apache-2.0"
+repository = "https://github.com/Nercury/android_logger-rs"
+
+[dependencies.android_log-sys]
+version = "0.2"
+
+[dependencies.env_logger]
+version = "0.10"
+default-features = false
+
+[dependencies.log]
+version = "0.4"
+
+[dependencies.once_cell]
+version = "1.9"
+
+[features]
+default = ["regex"]
+regex = ["env_logger/regex"]
+
+[badges.travis-ci]
+repository = "Nercury/android_logger-rs"
diff --git a/third_party/rust/android_logger/LICENSE-APACHE b/third_party/rust/android_logger/LICENSE-APACHE
new file mode 100644
index 0000000000..36b2b450cd
--- /dev/null
+++ b/third_party/rust/android_logger/LICENSE-APACHE
@@ -0,0 +1,201 @@
+Apache License
+Version 2.0, January 2004
+http://www.apache.org/licenses/
+
+TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+1. Definitions.
+
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+You may add Your own copyright statement to Your modifications and
+may provide additional or different license terms and conditions
+for use, reproduction, or distribution of Your modifications, or
+for any such Derivative Works as a whole, provided Your use,
+reproduction, and distribution of the Work otherwise complies with
+the conditions stated in this License.
+
+5. Submission of Contributions. Unless You explicitly state otherwise,
+any Contribution intentionally submitted for inclusion in the Work
+by You to the Licensor shall be under the terms and conditions of
+this License, without any additional terms or conditions.
+Notwithstanding the above, nothing herein shall supersede or modify
+the terms of any separate license agreement you may have executed
+with Licensor regarding such Contributions.
+
+6. Trademarks. This License does not grant permission to use the trade
+names, trademarks, service marks, or product names of the Licensor,
+except as required for reasonable and customary use in describing the
+origin of the Work and reproducing the content of the NOTICE file.
+
+7. Disclaimer of Warranty. Unless required by applicable law or
+agreed to in writing, Licensor provides the Work (and each
+Contributor provides its Contributions) on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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+PARTICULAR PURPOSE. You are solely responsible for determining the
+appropriateness of using or redistributing the Work and assume any
+risks associated with Your exercise of permissions under this License.
+
+8. Limitation of Liability. In no event and under no legal theory,
+whether in tort (including negligence), contract, or otherwise,
+unless required by applicable law (such as deliberate and grossly
+negligent acts) or agreed to in writing, shall any Contributor be
+liable to You for damages, including any direct, indirect, special,
+incidental, or consequential damages of any character arising as a
+result of this License or out of the use or inability to use the
+Work (including but not limited to damages for loss of goodwill,
+work stoppage, computer failure or malfunction, or any and all
+other commercial damages or losses), even if such Contributor
+has been advised of the possibility of such damages.
+
+9. Accepting Warranty or Additional Liability. While redistributing
+the Work or Derivative Works thereof, You may choose to offer,
+and charge a fee for, acceptance of support, warranty, indemnity,
+or other liability obligations and/or rights consistent with this
+License. However, in accepting such obligations, You may act only
+on Your own behalf and on Your sole responsibility, not on behalf
+of any other Contributor, and only if You agree to indemnify,
+defend, and hold each Contributor harmless for any liability
+incurred by, or claims asserted against, such Contributor by reason
+of your accepting any such warranty or additional liability.
+
+END OF TERMS AND CONDITIONS
+
+APPENDIX: How to apply the Apache License to your work.
+
+To apply the Apache License to your work, attach the following
+boilerplate notice, with the fields enclosed by brackets "{}"
+replaced with your own identifying information. (Don't include
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+comment syntax for the file format. We also recommend that a
+file or class name and description of purpose be included on the
+same "printed page" as the copyright notice for easier
+identification within third-party archives.
+
+Copyright 2016 The android_logger Developers
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
diff --git a/third_party/rust/android_logger/LICENSE-MIT b/third_party/rust/android_logger/LICENSE-MIT
new file mode 100644
index 0000000000..d73e1453ce
--- /dev/null
+++ b/third_party/rust/android_logger/LICENSE-MIT
@@ -0,0 +1,19 @@
+Copyright (c) 2016 The android_logger Developers
+
+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.
diff --git a/third_party/rust/android_logger/README.md b/third_party/rust/android_logger/README.md
new file mode 100644
index 0000000000..eec1ebafc5
--- /dev/null
+++ b/third_party/rust/android_logger/README.md
@@ -0,0 +1,82 @@
+## Send Rust logs to Logcat
+
+[![Version](https://img.shields.io/crates/v/android_logger.svg)](https://crates.io/crates/android_logger)
+[![CI status](https://github.com/Nercury/android_logger-rs/actions/workflows/ci.yml/badge.svg)](https://github.com/Nercury/android_logger-rs/actions/workflows/ci.yml/)
+
+
+This library is a drop-in replacement for `env_logger`. Instead, it outputs messages to
+android's logcat.
+
+This only works on Android and requires linking to `log` which
+is only available under android. With Cargo, it is possible to conditionally require
+this library:
+
+```toml
+[target.'cfg(target_os = "android")'.dependencies]
+android_logger = "0.11"
+```
+
+Example of initialization on activity creation, with log configuration:
+
+```rust
+#[macro_use] extern crate log;
+extern crate android_logger;
+
+use log::LevelFilter;
+use android_logger::{Config,FilterBuilder};
+
+fn native_activity_create() {
+    android_logger::init_once(
+        Config::default()
+            .with_max_level(LevelFilter::Trace) // limit log level
+            .with_tag("mytag") // logs will show under mytag tag
+            .with_filter( // configure messages for specific crate
+                FilterBuilder::new()
+                    .parse("debug,hello::crate=error")
+                    .build())
+    );
+
+    trace!("this is a verbose {}", "message");
+    error!("this is printed by default");
+}
+```
+
+To allow all logs, use the default configuration with min level Trace:
+
+```rust
+#[macro_use] extern crate log;
+extern crate android_logger;
+
+use log::LevelFilter;
+use android_logger::Config;
+
+fn native_activity_create() {
+    android_logger::init_once(
+        Config::default().with_max_level(LevelFilter::Trace),
+    );
+}
+```
+
+There is a caveat that this library can only be initialized once
+(hence the `init_once` function name). However, Android native activity can be
+re-created every time the screen is rotated, resulting in multiple initialization calls.
+Therefore this library will only log a warning for subsequent `init_once` calls.
+
+This library ensures that logged messages do not overflow Android log message limits
+by efficiently splitting messages into chunks.
+
+## License
+
+Licensed under either of
+
+ * Apache License, Version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+ * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+
+at your option.
+
+### Contribution
+
+Unless you explicitly state otherwise, any contribution intentionally
+submitted for inclusion in the work by you, as defined in the Apache-2.0
+license, shall be dual licensed as above, without any additional terms or
+conditions.
diff --git a/third_party/rust/android_logger/src/lib.rs b/third_party/rust/android_logger/src/lib.rs
new file mode 100644
index 0000000000..0446fad755
--- /dev/null
+++ b/third_party/rust/android_logger/src/lib.rs
@@ -0,0 +1,670 @@
+// Copyright 2016 The android_logger Developers
+//
+// Licensed under the Apache License, Version 2.0, <LICENSE-APACHE or
+// http://apache.org/licenses/LICENSE-2.0> or the MIT license <LICENSE-MIT or
+// http://opensource.org/licenses/MIT>, at your option. This file may not be
+// copied, modified, or distributed except according to those terms.
+
+//! A logger which writes to android output.
+//!
+//! ## Example
+//!
+//! ```
+//! #[macro_use] extern crate log;
+//! extern crate android_logger;
+//!
+//! use log::LevelFilter;
+//! use android_logger::Config;
+//!
+//! /// Android code may not have obvious "main", this is just an example.
+//! fn main() {
+//!     android_logger::init_once(
+//!         Config::default().with_max_level(LevelFilter::Trace),
+//!     );
+//!
+//!     debug!("this is a debug {}", "message");
+//!     error!("this is printed by default");
+//! }
+//! ```
+//!
+//! ## Example with module path filter
+//!
+//! It is possible to limit log messages to output from a specific crate,
+//! and override the logcat tag name (by default, the crate name is used):
+//!
+//! ```
+//! #[macro_use] extern crate log;
+//! extern crate android_logger;
+//!
+//! use log::LevelFilter;
+//! use android_logger::{Config,FilterBuilder};
+//!
+//! fn main() {
+//!     android_logger::init_once(
+//!         Config::default()
+//!             .with_max_level(LevelFilter::Trace)
+//!             .with_tag("mytag")
+//!             .with_filter(FilterBuilder::new().parse("debug,hello::crate=trace").build()),
+//!     );
+//!
+//!     // ..
+//! }
+//! ```
+//!
+//! ## Example with a custom log formatter
+//!
+//! ```
+//! use android_logger::Config;
+//!
+//! android_logger::init_once(
+//!     Config::default()
+//!         .with_max_level(log::LevelFilter::Trace)
+//!         .format(|f, record| write!(f, "my_app: {}", record.args()))
+//! )
+//! ```
+
+#[cfg(target_os = "android")]
+extern crate android_log_sys as log_ffi;
+extern crate once_cell;
+use once_cell::sync::OnceCell;
+#[macro_use]
+extern crate log;
+
+extern crate env_logger;
+
+use log::{Level, LevelFilter, Log, Metadata, Record};
+#[cfg(target_os = "android")]
+use log_ffi::LogPriority;
+use std::ffi::{CStr, CString};
+use std::fmt;
+use std::mem::{self, MaybeUninit};
+use std::ptr;
+
+pub use env_logger::filter::{Builder as FilterBuilder, Filter};
+pub use env_logger::fmt::Formatter;
+
+pub(crate) type FormatFn = Box<dyn Fn(&mut dyn fmt::Write, &Record) -> fmt::Result + Sync + Send>;
+
+/// Output log to android system.
+#[cfg(target_os = "android")]
+fn android_log(prio: log_ffi::LogPriority, tag: &CStr, msg: &CStr) {
+    unsafe {
+        log_ffi::__android_log_write(
+            prio as log_ffi::c_int,
+            tag.as_ptr() as *const log_ffi::c_char,
+            msg.as_ptr() as *const log_ffi::c_char,
+        )
+    };
+}
+
+/// Dummy output placeholder for tests.
+#[cfg(not(target_os = "android"))]
+fn android_log(_priority: Level, _tag: &CStr, _msg: &CStr) {}
+
+/// Underlying android logger backend
+pub struct AndroidLogger {
+    config: OnceCell<Config>,
+}
+
+impl AndroidLogger {
+    /// Create new logger instance from config
+    pub fn new(config: Config) -> AndroidLogger {
+        AndroidLogger {
+            config: OnceCell::from(config),
+        }
+    }
+
+    fn config(&self) -> &Config {
+        self.config.get_or_init(Config::default)
+    }
+}
+
+static ANDROID_LOGGER: OnceCell<AndroidLogger> = OnceCell::new();
+
+const LOGGING_TAG_MAX_LEN: usize = 23;
+const LOGGING_MSG_MAX_LEN: usize = 4000;
+
+impl Default for AndroidLogger {
+    /// Create a new logger with default config
+    fn default() -> AndroidLogger {
+        AndroidLogger {
+            config: OnceCell::from(Config::default()),
+        }
+    }
+}
+
+impl Log for AndroidLogger {
+    fn enabled(&self, metadata: &Metadata) -> bool {
+        let config = self.config();
+        // todo: consider __android_log_is_loggable.
+        metadata.level() <= config.log_level.unwrap_or_else(log::max_level)
+    }
+
+    fn log(&self, record: &Record) {
+        let config = self.config();
+
+        if !self.enabled(record.metadata()) {
+            return;
+        }
+
+        // this also checks the level, but only if a filter was
+        // installed.
+        if !config.filter_matches(record) {
+            return;
+        }
+
+        // tag must not exceed LOGGING_TAG_MAX_LEN
+        let mut tag_bytes: [MaybeUninit<u8>; LOGGING_TAG_MAX_LEN + 1] = uninit_array();
+
+        let module_path = record.module_path().unwrap_or_default().to_owned();
+
+        // If no tag was specified, use module name
+        let custom_tag = &config.tag;
+        let tag = custom_tag
+            .as_ref()
+            .map(|s| s.as_bytes())
+            .unwrap_or_else(|| module_path.as_bytes());
+
+        // truncate the tag here to fit into LOGGING_TAG_MAX_LEN
+        self.fill_tag_bytes(&mut tag_bytes, tag);
+        // use stack array as C string
+        let tag: &CStr = unsafe { CStr::from_ptr(mem::transmute(tag_bytes.as_ptr())) };
+
+        // message must not exceed LOGGING_MSG_MAX_LEN
+        // therefore split log message into multiple log calls
+        let mut writer = PlatformLogWriter::new(record.level(), tag);
+
+        // If a custom tag is used, add the module path to the message.
+        // Use PlatformLogWriter to output chunks if they exceed max size.
+        let _ = match (custom_tag, &config.custom_format) {
+            (_, Some(format)) => format(&mut writer, record),
+            (Some(_), _) => fmt::write(
+                &mut writer,
+                format_args!("{}: {}", module_path, *record.args()),
+            ),
+            _ => fmt::write(&mut writer, *record.args()),
+        };
+
+        // output the remaining message (this would usually be the most common case)
+        writer.flush();
+    }
+
+    fn flush(&self) {}
+}
+
+impl AndroidLogger {
+    fn fill_tag_bytes(&self, array: &mut [MaybeUninit<u8>], tag: &[u8]) {
+        if tag.len() > LOGGING_TAG_MAX_LEN {
+            for (input, output) in tag
+                .iter()
+                .take(LOGGING_TAG_MAX_LEN - 2)
+                .chain(b"..\0".iter())
+                .zip(array.iter_mut())
+            {
+                output.write(*input);
+            }
+        } else {
+            for (input, output) in tag.iter().chain(b"\0".iter()).zip(array.iter_mut()) {
+                output.write(*input);
+            }
+        }
+    }
+}
+
+/// Filter for android logger.
+#[derive(Default)]
+pub struct Config {
+    log_level: Option<LevelFilter>,
+    filter: Option<env_logger::filter::Filter>,
+    tag: Option<CString>,
+    custom_format: Option<FormatFn>,
+}
+
+impl Config {
+    // TODO: Remove on 0.13 version release.
+    /// **DEPRECATED**, use [`Config::with_max_level()`] instead.
+    #[deprecated(note = "use `.with_max_level()` instead")]
+    pub fn with_min_level(self, level: Level) -> Self {
+        self.with_max_level(level.to_level_filter())
+    }
+
+    /// Changes the maximum log level.
+    ///
+    /// Note, that `Trace` is the maximum level, because it provides the
+    /// maximum amount of detail in the emitted logs.
+    ///
+    /// If `Off` level is provided, then nothing is logged at all.
+    ///
+    /// [`log::max_level()`] is considered as the default level.
+    pub fn with_max_level(mut self, level: LevelFilter) -> Self {
+        self.log_level = Some(level);
+        self
+    }
+
+    fn filter_matches(&self, record: &Record) -> bool {
+        if let Some(ref filter) = self.filter {
+            filter.matches(record)
+        } else {
+            true
+        }
+    }
+
+    pub fn with_filter(mut self, filter: env_logger::filter::Filter) -> Self {
+        self.filter = Some(filter);
+        self
+    }
+
+    pub fn with_tag<S: Into<Vec<u8>>>(mut self, tag: S) -> Self {
+        self.tag = Some(CString::new(tag).expect("Can't convert tag to CString"));
+        self
+    }
+
+    /// Sets the format function for formatting the log output.
+    /// ```
+    /// # use android_logger::Config;
+    /// android_logger::init_once(
+    ///     Config::default()
+    ///         .with_max_level(log::LevelFilter::Trace)
+    ///         .format(|f, record| write!(f, "my_app: {}", record.args()))
+    /// )
+    /// ```
+    pub fn format<F>(mut self, format: F) -> Self
+    where
+        F: Fn(&mut dyn fmt::Write, &Record) -> fmt::Result + Sync + Send + 'static,
+    {
+        self.custom_format = Some(Box::new(format));
+        self
+    }
+}
+
+pub struct PlatformLogWriter<'a> {
+    #[cfg(target_os = "android")]
+    priority: LogPriority,
+    #[cfg(not(target_os = "android"))]
+    priority: Level,
+    len: usize,
+    last_newline_index: usize,
+    tag: &'a CStr,
+    buffer: [MaybeUninit<u8>; LOGGING_MSG_MAX_LEN + 1],
+}
+
+impl<'a> PlatformLogWriter<'a> {
+    #[cfg(target_os = "android")]
+    pub fn new_with_priority(priority: log_ffi::LogPriority, tag: &CStr) -> PlatformLogWriter {
+        #[allow(deprecated)] // created an issue #35 for this
+        PlatformLogWriter {
+            priority,
+            len: 0,
+            last_newline_index: 0,
+            tag,
+            buffer: uninit_array(),
+        }
+    }
+
+    #[cfg(target_os = "android")]
+    pub fn new(level: Level, tag: &CStr) -> PlatformLogWriter {
+        Self::new_with_priority(
+            match level {
+                Level::Warn => LogPriority::WARN,
+                Level::Info => LogPriority::INFO,
+                Level::Debug => LogPriority::DEBUG,
+                Level::Error => LogPriority::ERROR,
+                Level::Trace => LogPriority::VERBOSE,
+            },
+            tag,
+        )
+    }
+
+    #[cfg(not(target_os = "android"))]
+    pub fn new(level: Level, tag: &CStr) -> PlatformLogWriter {
+        #[allow(deprecated)] // created an issue #35 for this
+        PlatformLogWriter {
+            priority: level,
+            len: 0,
+            last_newline_index: 0,
+            tag,
+            buffer: uninit_array(),
+        }
+    }
+
+    /// Flush some bytes to android logger.
+    ///
+    /// If there is a newline, flush up to it.
+    /// If ther was no newline, flush all.
+    ///
+    /// Not guaranteed to flush everything.
+    fn temporal_flush(&mut self) {
+        let total_len = self.len;
+
+        if total_len == 0 {
+            return;
+        }
+
+        if self.last_newline_index > 0 {
+            let copy_from_index = self.last_newline_index;
+            let remaining_chunk_len = total_len - copy_from_index;
+
+            self.output_specified_len(copy_from_index);
+            self.copy_bytes_to_start(copy_from_index, remaining_chunk_len);
+            self.len = remaining_chunk_len;
+        } else {
+            self.output_specified_len(total_len);
+            self.len = 0;
+        }
+        self.last_newline_index = 0;
+    }
+
+    /// Flush everything remaining to android logger.
+    pub fn flush(&mut self) {
+        let total_len = self.len;
+
+        if total_len == 0 {
+            return;
+        }
+
+        self.output_specified_len(total_len);
+        self.len = 0;
+        self.last_newline_index = 0;
+    }
+
+    /// Output buffer up until the \0 which will be placed at `len` position.
+    fn output_specified_len(&mut self, len: usize) {
+        let mut last_byte = MaybeUninit::new(b'\0');
+
+        mem::swap(&mut last_byte, unsafe {
+            self.buffer.get_unchecked_mut(len)
+        });
+
+        let msg: &CStr = unsafe { CStr::from_ptr(self.buffer.as_ptr().cast()) };
+        android_log(self.priority, self.tag, msg);
+
+        unsafe { *self.buffer.get_unchecked_mut(len) = last_byte };
+    }
+
+    /// Copy `len` bytes from `index` position to starting position.
+    fn copy_bytes_to_start(&mut self, index: usize, len: usize) {
+        let dst = self.buffer.as_mut_ptr();
+        let src = unsafe { self.buffer.as_ptr().add(index) };
+        unsafe { ptr::copy(src, dst, len) };
+    }
+}
+
+impl<'a> fmt::Write for PlatformLogWriter<'a> {
+    fn write_str(&mut self, s: &str) -> fmt::Result {
+        let mut incomming_bytes = s.as_bytes();
+
+        while !incomming_bytes.is_empty() {
+            let len = self.len;
+
+            // write everything possible to buffer and mark last \n
+            let new_len = len + incomming_bytes.len();
+            let last_newline = self.buffer[len..LOGGING_MSG_MAX_LEN]
+                .iter_mut()
+                .zip(incomming_bytes)
+                .enumerate()
+                .fold(None, |acc, (i, (output, input))| {
+                    output.write(*input);
+                    if *input == b'\n' {
+                        Some(i)
+                    } else {
+                        acc
+                    }
+                });
+
+            // update last \n index
+            if let Some(newline) = last_newline {
+                self.last_newline_index = len + newline;
+            }
+
+            // calculate how many bytes were written
+            let written_len = if new_len <= LOGGING_MSG_MAX_LEN {
+                // if the len was not exceeded
+                self.len = new_len;
+                new_len - len // written len
+            } else {
+                // if new length was exceeded
+                self.len = LOGGING_MSG_MAX_LEN;
+                self.temporal_flush();
+
+                LOGGING_MSG_MAX_LEN - len // written len
+            };
+
+            incomming_bytes = &incomming_bytes[written_len..];
+        }
+
+        Ok(())
+    }
+}
+
+/// Send a log record to Android logging backend.
+///
+/// This action does not require initialization. However, without initialization it
+/// will use the default filter, which allows all logs.
+pub fn log(record: &Record) {
+    ANDROID_LOGGER
+        .get_or_init(AndroidLogger::default)
+        .log(record)
+}
+
+/// Initializes the global logger with an android logger.
+///
+/// This can be called many times, but will only initialize logging once,
+/// and will not replace any other previously initialized logger.
+///
+/// It is ok to call this at the activity creation, and it will be
+/// repeatedly called on every lifecycle restart (i.e. screen rotation).
+pub fn init_once(config: Config) {
+    let log_level = config.log_level;
+    let logger = ANDROID_LOGGER.get_or_init(|| AndroidLogger::new(config));
+
+    if let Err(err) = log::set_logger(logger) {
+        debug!("android_logger: log::set_logger failed: {}", err);
+    } else if let Some(level) = log_level {
+        log::set_max_level(level);
+    }
+}
+
+// FIXME: When `maybe_uninit_uninit_array ` is stabilized, use it instead of this helper
+fn uninit_array<const N: usize, T>() -> [MaybeUninit<T>; N] {
+    // SAFETY: Array contains MaybeUninit, which is fine to be uninit
+    unsafe { MaybeUninit::uninit().assume_init() }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use std::fmt::Write;
+    use std::sync::atomic::{AtomicBool, Ordering};
+
+    #[test]
+    fn check_config_values() {
+        // Filter is checked in config_filter_match below.
+        let config = Config::default()
+            .with_max_level(LevelFilter::Trace)
+            .with_tag("my_app");
+
+        assert_eq!(config.log_level, Some(LevelFilter::Trace));
+        assert_eq!(config.tag, Some(CString::new("my_app").unwrap()));
+    }
+
+    #[test]
+    fn log_calls_formatter() {
+        static FORMAT_FN_WAS_CALLED: AtomicBool = AtomicBool::new(false);
+        let config = Config::default()
+            .with_max_level(LevelFilter::Info)
+            .format(|_, _| {
+                FORMAT_FN_WAS_CALLED.store(true, Ordering::SeqCst);
+                Ok(())
+            });
+        let logger = AndroidLogger::new(config);
+
+        logger.log(&Record::builder().level(Level::Info).build());
+
+        assert!(FORMAT_FN_WAS_CALLED.load(Ordering::SeqCst));
+    }
+
+    #[test]
+    fn logger_enabled_threshold() {
+        let logger = AndroidLogger::new(Config::default().with_max_level(LevelFilter::Info));
+
+        assert!(logger.enabled(&log::MetadataBuilder::new().level(Level::Warn).build()));
+        assert!(logger.enabled(&log::MetadataBuilder::new().level(Level::Info).build()));
+        assert!(!logger.enabled(&log::MetadataBuilder::new().level(Level::Debug).build()));
+    }
+
+    // Test whether the filter gets called correctly. Not meant to be exhaustive for all filter
+    // options, as these are handled directly by the filter itself.
+    #[test]
+    fn config_filter_match() {
+        let info_record = Record::builder().level(Level::Info).build();
+        let debug_record = Record::builder().level(Level::Debug).build();
+
+        let info_all_filter = env_logger::filter::Builder::new().parse("info").build();
+        let info_all_config = Config::default().with_filter(info_all_filter);
+
+        assert!(info_all_config.filter_matches(&info_record));
+        assert!(!info_all_config.filter_matches(&debug_record));
+    }
+
+    #[test]
+    fn fill_tag_bytes_truncates_long_tag() {
+        let logger = AndroidLogger::new(Config::default());
+        let too_long_tag: [u8; LOGGING_TAG_MAX_LEN + 20] = [b'a'; LOGGING_TAG_MAX_LEN + 20];
+
+        let mut result: [MaybeUninit<u8>; LOGGING_TAG_MAX_LEN + 1] = uninit_array();
+        logger.fill_tag_bytes(&mut result, &too_long_tag);
+
+        let mut expected_result = [b'a'; LOGGING_TAG_MAX_LEN - 2].to_vec();
+        expected_result.extend("..\0".as_bytes());
+        assert_eq!(unsafe { assume_init_slice(&result) }, expected_result);
+    }
+
+    #[test]
+    fn fill_tag_bytes_keeps_short_tag() {
+        let logger = AndroidLogger::new(Config::default());
+        let short_tag: [u8; 3] = [b'a'; 3];
+
+        let mut result: [MaybeUninit<u8>; LOGGING_TAG_MAX_LEN + 1] = uninit_array();
+        logger.fill_tag_bytes(&mut result, &short_tag);
+
+        let mut expected_result = short_tag.to_vec();
+        expected_result.push(0);
+        assert_eq!(unsafe { assume_init_slice(&result[..4]) }, expected_result);
+    }
+
+    #[test]
+    fn platform_log_writer_init_values() {
+        let tag = CStr::from_bytes_with_nul(b"tag\0").unwrap();
+
+        let writer = PlatformLogWriter::new(Level::Warn, tag);
+
+        assert_eq!(writer.tag, tag);
+        // Android uses LogPriority instead, which doesn't implement equality checks
+        #[cfg(not(target_os = "android"))]
+        assert_eq!(writer.priority, Level::Warn);
+    }
+
+    #[test]
+    fn temporal_flush() {
+        let mut writer = get_tag_writer();
+
+        writer
+            .write_str("12\n\n567\n90")
+            .expect("Unable to write to PlatformLogWriter");
+
+        assert_eq!(writer.len, 10);
+        writer.temporal_flush();
+        // Should have flushed up until the last newline.
+        assert_eq!(writer.len, 3);
+        assert_eq!(writer.last_newline_index, 0);
+        assert_eq!(
+            unsafe { assume_init_slice(&writer.buffer[..writer.len]) },
+            "\n90".as_bytes()
+        );
+
+        writer.temporal_flush();
+        // Should have flushed all remaining bytes.
+        assert_eq!(writer.len, 0);
+        assert_eq!(writer.last_newline_index, 0);
+    }
+
+    #[test]
+    fn flush() {
+        let mut writer = get_tag_writer();
+        writer
+            .write_str("abcdefghij\n\nklm\nnopqr\nstuvwxyz")
+            .expect("Unable to write to PlatformLogWriter");
+
+        writer.flush();
+
+        assert_eq!(writer.last_newline_index, 0);
+        assert_eq!(writer.len, 0);
+    }
+
+    #[test]
+    fn last_newline_index() {
+        let mut writer = get_tag_writer();
+
+        writer
+            .write_str("12\n\n567\n90")
+            .expect("Unable to write to PlatformLogWriter");
+
+        assert_eq!(writer.last_newline_index, 7);
+    }
+
+    #[test]
+    fn output_specified_len_leaves_buffer_unchanged() {
+        let mut writer = get_tag_writer();
+        let log_string = "abcdefghij\n\nklm\nnopqr\nstuvwxyz";
+        writer
+            .write_str(log_string)
+            .expect("Unable to write to PlatformLogWriter");
+
+        writer.output_specified_len(5);
+
+        assert_eq!(
+            unsafe { assume_init_slice(&writer.buffer[..log_string.len()]) },
+            log_string.as_bytes()
+        );
+    }
+
+    #[test]
+    fn copy_bytes_to_start() {
+        let mut writer = get_tag_writer();
+        writer
+            .write_str("0123456789")
+            .expect("Unable to write to PlatformLogWriter");
+
+        writer.copy_bytes_to_start(3, 2);
+
+        assert_eq!(
+            unsafe { assume_init_slice(&writer.buffer[..10]) },
+            "3423456789".as_bytes()
+        );
+    }
+
+    #[test]
+    fn copy_bytes_to_start_nop() {
+        let test_string = "Test_string_with\n\n\n\nnewlines\n";
+        let mut writer = get_tag_writer();
+        writer
+            .write_str(test_string)
+            .expect("Unable to write to PlatformLogWriter");
+
+        writer.copy_bytes_to_start(0, 20);
+        writer.copy_bytes_to_start(10, 0);
+
+        assert_eq!(
+            unsafe { assume_init_slice(&writer.buffer[..test_string.len()]) },
+            test_string.as_bytes()
+        );
+    }
+
+    fn get_tag_writer() -> PlatformLogWriter<'static> {
+        PlatformLogWriter::new(Level::Warn, CStr::from_bytes_with_nul(b"tag\0").unwrap())
+    }
+
+    unsafe fn assume_init_slice<T>(slice: &[MaybeUninit<T>]) -> &[T] {
+        &*(slice as *const [MaybeUninit<T>] as *const [T])
+    }
+}
diff --git a/third_party/rust/android_logger/tests/config_log_level.rs b/third_party/rust/android_logger/tests/config_log_level.rs
new file mode 100644
index 0000000000..864b229f9c
--- /dev/null
+++ b/third_party/rust/android_logger/tests/config_log_level.rs
@@ -0,0 +1,11 @@
+extern crate android_logger;
+extern crate log;
+
+#[test]
+fn config_log_level() {
+    android_logger::init_once(
+        android_logger::Config::default().with_max_level(log::LevelFilter::Trace),
+    );
+
+    assert_eq!(log::max_level(), log::LevelFilter::Trace);
+}
diff --git a/third_party/rust/android_logger/tests/default_init.rs b/third_party/rust/android_logger/tests/default_init.rs
new file mode 100644
index 0000000000..7b04c24812
--- /dev/null
+++ b/third_party/rust/android_logger/tests/default_init.rs
@@ -0,0 +1,10 @@
+extern crate android_logger;
+extern crate log;
+
+#[test]
+fn default_init() {
+    android_logger::init_once(Default::default());
+
+    // android_logger has default log level "off"
+    assert_eq!(log::max_level(), log::LevelFilter::Off);
+}
diff --git a/third_party/rust/android_logger/tests/multiple_init.rs b/third_party/rust/android_logger/tests/multiple_init.rs
new file mode 100644
index 0000000000..26f815d521
--- /dev/null
+++ b/third_party/rust/android_logger/tests/multiple_init.rs
@@ -0,0 +1,16 @@
+extern crate android_logger;
+extern crate log;
+
+#[test]
+fn multiple_init() {
+    android_logger::init_once(
+        android_logger::Config::default().with_max_level(log::LevelFilter::Trace),
+    );
+
+    // Second initialization should be silently ignored
+    android_logger::init_once(
+        android_logger::Config::default().with_max_level(log::LevelFilter::Error),
+    );
+
+    assert_eq!(log::max_level(), log::LevelFilter::Trace);
+}