Compare commits

..

No commits in common. "master" and "v0.0.4" have entirely different histories.

65 changed files with 794 additions and 3317 deletions

1
.gitignore vendored
View File

@ -4,4 +4,3 @@
/gradle/wrapper/gradle-wrapper.jar
/gradle/wrapper/gradle-wrapper.properties
/node_modules
.kotlin

145
README.md
View File

@ -1,25 +1,6 @@
# Binary tools and BiPack serializer
Multiplatform binary tools collection, including portable serialization of the compact and fast [Bipack] format, and
many useful tools to work with binary data, like CRC family checksums, dumps, etc. It works well also in the browser and
in native targets.
# Recent changes
- 0.1.7 built with kotlin 2.0.20 which contains important fix in wasmJS
- 0.1.6 add many useful features, added support to wasmJS and all other platforms. Note to wasmJS: it appears to be a bug in wasm compiler so BipackDecoder could cause wasm loading problem.
- 0.1.1: added serialized KVStorage with handy implementation on JVM and JS platforms and some required synchronization
tools.
-
- 0.1.0: uses modern kotlin 1.9.*, fixes problem with singleton or empty/object serialization
The last 1.8-based version is 0.0.8. Some fixes are not yet backported to it pls leave an issue of needed.
# Documentation
Aside of the samples in this readme please see [library documentation](https://code.sergeych.net/docs/mp_bintools/).
Multiplatform binary tools collection, including portable serialization of the compact and fast [Bipack] format, and many useful tools to work with binary data, like CRC family checksums, dumps, etc. It works well also in the browser and in native targets.
# Usage
@ -32,75 +13,15 @@ repositories {
}
```
And add dependency to the proper place in your project like this:
And add dependecy to the proper place in yuor project like this:
```kotlin
dependencies {
// ...
implementation("net.sergeych:mp_bintools:0.1.7")
implementation("net.sergeych:mp_bintools:0.0.3")
}
```
## Calculating CRCs:
~~~kotlin
CRC.crc32("Hello".encodeToByteArray())
CRC.crc16("happy".encodeToByteArray())
CRC.crc8("world".encodeToByteArray())
~~~
## Binary effective serialization with Bipack:
~~~kotlin
@Serializable
data class Foo(val bar: String,buzz: Int)
val foo = Foo("bar", 42)
val bytes = BipackEncoder.encode(foo)
val bar: Foo = BipackDecoder.decode(bytes)
assertEquals(foo, bar)
~~~
## Bipack-based auto-serializing storage:
Allows easily storing whatever `@Serializable` data type using delegates
and more:
~~~kotlin
val storage = defaultNamedStorage("test_mp_bintools")
var foo by s1("unknown") // default value makes it a String
foo = "bar"
// nullable:
var answer: Int? by storage.optStored()
answer = 42
s1.delete("foo")
~~~
## MotherPacker
This conception allows switching encoding on the fly. Create some MotherPacker instance
and pass it to your encoding/decoding code:
~~~kotlin
@Serializable
data class FB1(val foo: Int,val bar: String)
// This is JSON implementation of MotherPacker:
val mp = JsonPacker()
// it packs and unpacks to JSON:
println(mp.pack(mapOf("foo" to 42)).decodeToString())
assertEquals("""{"foo":42}""", mp.pack(mapOf("foo" to 42)).decodeToString())
val x = mp.unpack<FB1>("""{"foo":42, "bar": "foo"}""".encodeToByteArray())
assertEquals(42, x.foo)
assertEquals("foo", x.bar)
~~~
There is also [MotherBipack] `MotherPacker` implementation using Bipack. You can add more formats
easily by implementing `MotherPacker` interface.
# Bipack
## Why?
@ -109,55 +30,56 @@ Bipack is a compact and efficient binary serialization library (and format) was
### Allow easy unpacking existing binary structures
Yuo describe your structure as `@Serializable` classes, and - voilà, bipack decodes and encodes it for you! We aim to make it really easy to convert data from other binary formats by adding more format annotations
Yuo describe your structure as `@Serializable` classes, and - voila, bipack decodes and encodes it for you! We aim to make it really easy to convert data from other binary formats by adding more format annotations
### Be as compact as possible
For this reason it is a binary notation, it uses binary form for decimal numbers and can use a variety of encoding for
For this reason it is a binary notation, it uses binary form for decimal numbers and can use variery of encoding for
integers:
#### Varint
Variable-length compact encoding is used internally in some cases. It uses a 0x80 bit in every byte to mark continuation.
Variable-length compact encoding is used internally in some cases. It uses a 0x80 bit in every byte to mark coninuation.
See `object Varint`.
#### Smartint
Variable-length compact encoding for signed and unsigned integers uses as few bytes as possible to encode integers. It is used automatically when serializing integers. It is slightly more sophisticated than straight `Varint`.
Variable-length compact encoding for signed and unsigned integers use as few bytes as possible to encode integers. It is
used automatically when serializing integers. It is slightly more sophisticated than straight `Varint`.
### Do not reveal information about stored data
Many extendable formats, like JSON, BSON, BOSS and may others are keeping data in key-value pairs. While it is good in many aspects, it has some disadvantages: it uses more space, and it reveals inner data structure to the world. It is possible to unpack such formats with zero information about inner structure.
Many extendable formats, like JSON, BSON, BOSS and may others are keeping data in key-value pairs. While it is good in
many aspets, it has a clear disadvantages: it uses more space, and it reveals inner data structure to the world. It is
possible to unpack such formats with zero information about inner structure.
Bipack does not store field names, so it is not possible to unpack or interpret it without knowledge of the data structure. Only probabilistic analysis. Let's not make the life of attacker easier :)
Bipack does not store field names, so it is not possible to unpack or interpret it without knowledge of the data
structure. Only probablistic analysis. Let's not make life of attacker easier :)
### -- allows upgrading data structures with backward compatibility
### - allow upgrading data structures with backward compatibility
The serialization formats of this kind have a dark side: you can't change the structures without either losing backward compatibility with already serialized data or using voluminous boilerplate code to implement some sort of versioning.
The dark side of serialization formats of this kind is that you can't change the structures without either loosing
backward compatibility with already serialzied data or using volumous boilerplate code to implement some sort of
versioning.
Not to waste space
and reveal more information that needed Bipack allows
extending classes marked
as [@Extendable] to be extended with more data _appended to the end of the field list with required default values_.
For such classes,
Bipack stores the number of actually serialized fields
and automatically uses default values for non-serialized ones when unpacking old data.
Not to waste space and reveal more information that needed Bipack allows extending classes marked as [@Extendable] to be
extended with more data _appended to the end of list of fields with required defaul values_. For such classes, Bipack stores the number of actually serialized fields and atuomatically uses default values for non-serialized ones when unpacking
old data.
### Protect data with framing and CRC
When needed,
a serialization library allow to store/check CRC32 tag of the structure name with
`@Framed` (can be overridden as usual with `@SerialName`), or be followed with CRC32 of the serialized binary data, that will be checked on deserialization, using `@CrcProtected`. This allows checking the data consistency out of the box and only where needed.
When needed, serialization lobrary allow to store/check CRC32 tag of the structure name with `@Framed` (can be overriden
as usual with `@SerialName`), or be followed with CRC32 of the serialized binary data, that will be checked on
deserialization, using `@CrcProtected`. This allows checking the data consistency out of the box and only where needed.
# Usage
Use `kotlinx.serialization` as usual. There are the following Bipack-specific annotations at your disposal (can be
combined):
Use kotlinx serializatino as usual. There are the following Bipack-specific annotations at your disposal (can be combined):
## @Extendable
Classes marked this way store number of fields. It allows adding to the class data more fields, to the end of the list, with
default initializers, keeping backward compatibility. For example, if you have serialized:
Classes marked this way store number of fields. It allows to add to the class data more fields, to the end of list, with
default initializers, keeping backward compatibility. For example if you have serialized:
```kotlin
@Serializable
@ -173,27 +95,28 @@ and then decided to add a field:
data class foo(val i: Int, val bar: String = "buzz")
```
It adds one or more bytes to the serialized data (field counts in `Varint` format)
It adds 1 or more bytes to the serialized data (field counts in `Varint` format)
Bipack will properly deserialize the data serialized for an old version.
Bipack will properly deserialize the data serialzied for an old version.
## @CrcProtected
Bipack will calculate and store CRC32 of serialized data at the end, and automatically check it on deserializing
throwing `InvalidFrameCRCException` if it does not match.
It adds four bytes to the serialized data.
It adds 4 bytes to the serialized data.
## @Framed
Put the CRC32 of the serializing class name (`@SerialName` allows to change it as usual) and checks it on deserializing.
Throws `InvalidFrameHeaderException` if it does not match.
It adds four bytes to the serialized data.
It adds 4 bytes to the serialized data.
## @Unsigned
## @Unisgned
This __field annotation__ allows to store __integer fields__ of any size more compact by not saving the sign. It could be applied to both signed and unsigned integers of any size.
This __field annontation__ allows to store __integer fields__ of any size more compact by not saving the sign. Could be
applyed to both signed and unsigned integers of any size.
## @FixedSize(size)
@ -202,7 +125,7 @@ at least one byte.
## @Fixed
Can be used with any integer type to store/restore it as is, fixed-size, big-endian:
Can be used with any integer type to store/restor it as is, fixed-size, big-endian:
- Short, UShort: 2 bytes
- Int, UInt: 4 bytes

View File

@ -1,4 +0,0 @@
#!/bin/bash
set -e
./gradlew dokkaHtml
rsync -avz ./build/dokka/* code.sergeych.net:/bigstore/sergeych_pub/code/docs/mp_bintools

View File

@ -1,14 +1,14 @@
plugins {
kotlin("multiplatform") version "2.0.20"
kotlin("plugin.serialization") version "2.0.20"
id("org.jetbrains.dokka") version "1.9.20"
kotlin("multiplatform") version "1.8.20"
kotlin("plugin.serialization") version "1.8.20"
id("org.jetbrains.dokka") version "1.6.0"
`maven-publish`
}
val serialization_version = "1.6.5-SNAPSHOT"
val serialization_version = "1.3.4"
group = "net.sergeych"
version = "0.1.8-SNAPSHOT"
version = "0.0.4"
repositories {
mavenCentral()
@ -17,79 +17,72 @@ repositories {
}
kotlin {
jvmToolchain(8)
jvm()
js {
browser()
nodejs()
jvm {
compilations.all {
kotlinOptions.jvmTarget = "1.8"
}
macosArm64()
iosX64()
iosArm64()
macosX64()
iosSimulatorArm64()
linuxX64()
linuxArm64()
mingwX64()
wasmJs {
browser()
binaries.executable()
}
mingwX64() {
binaries.staticLib {
baseName = "mp_bintools"
withJava()
testRuns["test"].executionTask.configure {
useJUnitPlatform()
}
}
js(IR) {
browser {
testTask {
useKarma {
// /home/sergeych/snap/firefox/common/.mozilla/firefox/iff469o9.default
// /home/sergeych/snap/firefox/common/.mozilla/firefox/iff469o9.default
// useFirefox()
useChromeHeadless()
// useSafari()
}
}
// commonWebpackConfig {
// cssSupport.enabled = true
// }
}
nodejs {
testTask {
}
}
}
val hostOs = System.getProperty("os.name")
val isMingwX64 = hostOs.startsWith("Windows")
val nativeTarget = when {
hostOs == "Mac OS X" -> macosX64("native")
hostOs == "Linux" -> linuxX64("native")
isMingwX64 -> mingwX64("native")
else -> throw GradleException("Host OS is not supported in Kotlin/Native.")
}
sourceSets {
all {
languageSettings.optIn("kotlinx.serialization.ExperimentalSerializationApi")
languageSettings.optIn("kotlin.ExperimentalUnsignedTypes")
languageSettings.optIn("kotlin.contracts.ExperimentalContracts")
}
val commonMain by getting {
dependencies {
implementation("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.8.1")
implementation("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.6.4")
// this is actually a bug: we need only the core, but bare core causes strange errors
implementation("org.jetbrains.kotlinx:kotlinx-serialization-json:1.6.3")
api("net.sergeych:mp_stools:[1.4.7,)")
implementation("org.jetbrains.kotlinx:kotlinx-datetime:0.5.0")
implementation("org.jetbrains.kotlinx:kotlinx-serialization-json:1.5.0")
// api("net.sergeych:mp_stools:[1.3.3,)")
implementation("org.jetbrains.kotlinx:kotlinx-datetime:0.4.0")
}
}
val nativeMain by creating {
dependsOn(commonMain)
dependencies {
}
}
val linuxX64Main by getting {
dependsOn(nativeMain)
}
val linuxArm64Main by getting {
dependsOn(nativeMain)
}
val commonTest by getting {
dependencies {
implementation(kotlin("test"))
implementation("net.sergeych:mp_stools:1.4.1")
}
}
val jvmMain by getting
val jvmTest by getting
val jsMain by getting {
dependencies {
}
}
val jsMain by getting
val jsTest by getting
// val nativeTest by getting
val wasmJsMain by getting {
dependencies {
}
}
val wasmJsTest by getting
val nativeMain by getting
val nativeTest by getting
}
publishing {

View File

@ -1,13 +1,6 @@
# Module mp_bintools
## Collection of binary tools
Most interesting:
- Full set of CRC: [net.sergeych.bintools.CRC]
- Binary bit-effective __BiPack format__ serializer: [net.sergeych.bipack.BipackEncoder] and [net.sergeych.bipack.BipackDecoder]. Also typed key-value storage for it, see [net.sergeych.bipack.KVStorage] and its delegates and [net.sergeych.bipack.defaultNamedStorage].
- Multiplatform synchronization tools, that works the same and properly on JS, native and JVM, see [net.sergeych.synctools]
- many general-purpose utilities that simplify binary data processing, see package [net.sergeych.bintools] below.
This library contains a `Bipack` binary format serializer, see [net.sergeych.bipack.BipackEncoder] and [net.sergeych.bipack.BipackDecoder]. Also, there are many general-purpose utilities that simplify binary data processing, see package [net.sergeych.bintools] below.
# Package net.sergeych.bipack
@ -24,9 +17,3 @@ There are also special annotation to fine tune the format: [Extendable], [Framed
General-purpose binary tools: encoding to bytes, hex, binary dumps. variable length integer, ect. Most of it is used internally by bipack serializers, see [net.sergeych.bipack] for details.
In particular, see [Varint] and [Smartint] variable-length compact integer codecs and also [DataSource] and [DataSink] multiplatform synchronous read/write interfaces.
# Package net.sergeych.synctools
To write a code that compiles and runs, and most likely works on the
JS, native, and JVM, we need some portable/compatible synchronization
primitives. This package is a collection of such.

View File

@ -1,3 +1,2 @@
kotlin.code.style=official
kotlin.js.compiler=ir
kotlin.mpp.applyDefaultHierarchyTemplate=false

41
gradlew vendored
View File

@ -55,7 +55,7 @@
# Darwin, MinGW, and NonStop.
#
# (3) This script is generated from the Groovy template
# https://github.com/gradle/gradle/blob/HEAD/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
# https://github.com/gradle/gradle/blob/master/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
# within the Gradle project.
#
# You can find Gradle at https://github.com/gradle/gradle/.
@ -80,11 +80,13 @@ do
esac
done
# This is normally unused
# shellcheck disable=SC2034
APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
APP_NAME="Gradle"
APP_BASE_NAME=${0##*/}
# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
APP_HOME=$( cd "${APP_HOME:-./}" > /dev/null && pwd -P ) || exit
# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
# Use the maximum available, or set MAX_FD != -1 to use that value.
MAX_FD=maximum
@ -131,29 +133,22 @@ location of your Java installation."
fi
else
JAVACMD=java
if ! command -v java >/dev/null 2>&1
then
die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
Please set the JAVA_HOME variable in your environment to match the
location of your Java installation."
fi
fi
# Increase the maximum file descriptors if we can.
if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
case $MAX_FD in #(
max*)
# In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
# shellcheck disable=SC2039,SC3045
MAX_FD=$( ulimit -H -n ) ||
warn "Could not query maximum file descriptor limit"
esac
case $MAX_FD in #(
'' | soft) :;; #(
*)
# In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
# shellcheck disable=SC2039,SC3045
ulimit -n "$MAX_FD" ||
warn "Could not set maximum file descriptor limit to $MAX_FD"
esac
@ -198,15 +193,11 @@ if "$cygwin" || "$msys" ; then
done
fi
# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
# Collect all arguments for the java command:
# * DEFAULT_JVM_OPTS, JAVA_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
# and any embedded shellness will be escaped.
# * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
# treated as '${Hostname}' itself on the command line.
# Collect all arguments for the java command;
# * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
# shell script including quotes and variable substitutions, so put them in
# double quotes to make sure that they get re-expanded; and
# * put everything else in single quotes, so that it's not re-expanded.
set -- \
"-Dorg.gradle.appname=$APP_BASE_NAME" \
@ -214,12 +205,6 @@ set -- \
org.gradle.wrapper.GradleWrapperMain \
"$@"
# Stop when "xargs" is not available.
if ! command -v xargs >/dev/null 2>&1
then
die "xargs is not available"
fi
# Use "xargs" to parse quoted args.
#
# With -n1 it outputs one arg per line, with the quotes and backslashes removed.

11
gradlew.bat vendored
View File

@ -26,7 +26,6 @@ if "%OS%"=="Windows_NT" setlocal
set DIRNAME=%~dp0
if "%DIRNAME%" == "" set DIRNAME=.
@rem This is normally unused
set APP_BASE_NAME=%~n0
set APP_HOME=%DIRNAME%
@ -41,7 +40,7 @@ if defined JAVA_HOME goto findJavaFromJavaHome
set JAVA_EXE=java.exe
%JAVA_EXE% -version >NUL 2>&1
if %ERRORLEVEL% equ 0 goto execute
if "%ERRORLEVEL%" == "0" goto execute
echo.
echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
@ -76,15 +75,13 @@ set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
:end
@rem End local scope for the variables with windows NT shell
if %ERRORLEVEL% equ 0 goto mainEnd
if "%ERRORLEVEL%"=="0" goto mainEnd
:fail
rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
rem the _cmd.exe /c_ return code!
set EXIT_CODE=%ERRORLEVEL%
if %EXIT_CODE% equ 0 set EXIT_CODE=1
if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
exit /b %EXIT_CODE%
if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
exit /b 1
:mainEnd
if "%OS%"=="Windows_NT" endlocal

File diff suppressed because it is too large Load Diff

View File

@ -1,80 +0,0 @@
package net.sergeych.bintools
import kotlinx.serialization.Serializable
import kotlin.math.min
import kotlin.random.Random
/**
* Bytes sequence with comparison, concatenation, and string representation,
* could be used as hash keys for pure binary values, etc.
*/
@Suppress("unused")
@Serializable
class ByteChunk(val data: UByteArray): Comparable<ByteChunk> {
val size: Int get() = data.size
/**
* Per-byte comparison also of different length. From two chunks
* of different size but equal beginning, the shorter is considered
* the smaller.
*/
override fun compareTo(other: ByteChunk): Int {
val limit = min(size, other.size)
for( i in 0 ..< limit) {
val own = data[i]
val their = other.data[i]
if( own < their) return -1
else if( own > their) return 1
}
if( size < other.size ) return -1
if( size > other.size ) return 1
return 0
}
/**
* Equal chunks means content equality.
*/
override fun equals(other: Any?): Boolean {
if (this === other) return true
if (other !is ByteChunk) return false
return data contentEquals other.data
}
/**
* Content-based hash code
*/
override fun hashCode(): Int {
return data.contentHashCode()
}
/**
* hex representation of data
*/
override fun toString(): String = hex
/**
* Hex encoded data
*/
val hex by lazy { data.encodeToHex() }
/**
* human-readable dump
*/
val dump by lazy { data.toDump() }
/**
* Concatenate two chunks and return new one
*/
operator fun plus(other: ByteChunk): ByteChunk = ByteChunk(data + other.data)
companion object {
fun fromHex(hex: String): ByteChunk = ByteChunk(hex.decodeHex().asUByteArray())
fun random(size: Int=16): ByteChunk = Random.nextBytes(size).asChunk()
}
}
fun ByteArray.asChunk() = ByteChunk(this.asUByteArray())
@Suppress("unused")
fun UByteArray.asChunk() = ByteChunk(this)

View File

@ -27,9 +27,6 @@ interface CRC<T> {
fun crc8(data: ByteArray, polynomial: UByte = 0xA7.toUByte()): UByte =
CRC8(polynomial).also { it.update(data) }.value
fun crc8(data: UByteArray, polynomial: UByte = 0xA7.toUByte()): UByte =
CRC8(polynomial).also { it.update(data) }.value
/**
* Calculate CRC16 for a data array using a given polynomial (CRC16-CCITT polynomial (0x1021) by default)
*/
@ -48,7 +45,6 @@ infix fun UShort.shl(bitCount: Int): UShort = (this.toUInt() shl bitCount).toUSh
infix fun UShort.shr(bitCount: Int): UShort = (this.toUInt() shr bitCount).toUShort()
infix fun UByte.shl(bitCount: Int): UByte = (this.toUInt() shl bitCount).toUByte()
@Suppress("unused")
infix fun UByte.shr(bitCount: Int): UByte = (this.toUInt() shr bitCount).toUByte()
fun UByte.toBigEndianUShort(): UShort = this.toUShort() shl 8

View File

@ -1,135 +0,0 @@
package net.sergeych.bintools
import net.sergeych.bipack.BipackDecoder
import net.sergeych.bipack.BipackEncoder
import net.sergeych.mp_logger.LogTag
import net.sergeych.mp_logger.Loggable
import net.sergeych.mp_logger.debug
import net.sergeych.synctools.AtomicCounter
import net.sergeych.synctools.ProtectedOp
import net.sergeych.synctools.WaitHandle
import net.sergeych.synctools.withLock
private val ac = AtomicCounter(0)
class DataKVStorage(private val provider: DataProvider) : KVStorage,
Loggable by LogTag("DKVS${ac.incrementAndGet()}") {
data class Lock(val name: String) {
private val exclusive = ProtectedOp()
private var readerCount = 0
private var pulses = WaitHandle()
fun <T> lockExclusive(f: () -> T): T {
while (true) {
exclusive.withLock {
if (readerCount == 0) {
return f()
}
}
pulses.await()
}
}
fun <T> lockRead(f: () -> T): T {
try {
exclusive.withLock { readerCount++ }
return f()
} finally {
exclusive.withLock { readerCount-- }
if (readerCount == 0) pulses.wakeUp()
}
}
}
private val locks = mutableMapOf<String, Lock>()
private val access = ProtectedOp()
private val keyIds = mutableMapOf<String, Int>()
private var lastId: Int = 0
init {
access.withLock {
// TODO: read keys
for (fn in provider.list()) {
debug { "Scanning: $fn" }
if (fn.endsWith(".d")) {
val id = fn.dropLast(2).toInt(16)
debug { "found data record: $fn -> $id" }
val name = provider.read(fn) { BipackDecoder.decode<String>(it) }
keyIds[name] = id
if (id > lastId) lastId = id
} else debug { "ignoring record $fn" }
}
}
}
/**
* Important: __it must be called with locked access op!__
*/
private fun lockFor(name: String): Lock = locks.getOrPut(name) { Lock(name) }
private fun recordName(id: Int) = "${id.toString(16)}.d"
private fun <T> read(name: String, f: (DataSource) -> T): T {
val lock: Lock
val id: Int
// global lock: fast
access.withLock {
id = keyIds[name] ?: throw DataProvider.NotFoundException()
lock = lockFor(name)
}
// per-name lock: slow
return lock.lockRead {
provider.read(recordName(id), f)
}
}
private fun write(name: String, f: (DataSink) -> Unit) {
val lock: Lock
val id: Int
// global lock: fast
access.withLock {
id = keyIds[name] ?: (++lastId).also { keyIds[name] = it }
lock = lockFor(name)
}
// per-name lock: slow
lock.lockExclusive { provider.write(recordName(id), f) }
}
private fun deleteEntry(name: String) {
// fast pre-check:
if (name !in keyIds) return
// global lock: we can't now detect concurrent delete + write ops, so exclusive:
access.withLock {
val id = keyIds[name] ?: return
provider.delete(recordName(id))
locks.remove(name)
keyIds.remove(name)
}
}
override fun get(key: String): ByteArray? = try {
read(key) {
BipackDecoder.decode<String>(it)
// notice: not nullable byte array here!
BipackDecoder.decode<ByteArray>(it)
}
} catch (_: DataProvider.NotFoundException) {
null
}
override fun set(key: String, value: ByteArray?) {
if (value == null) {
deleteEntry(key)
} else write(key) {
BipackEncoder.encode(key, it)
BipackEncoder.encode(value, it)
}
}
override val keys: Set<String>
get() = access.withLock { keyIds.keys }
}

View File

@ -1,33 +0,0 @@
package net.sergeych.bintools
/**
* Abstraction of some file- or named_record- storage. It could be a filesystem
* on native and JVM targets and indexed DB or session storage in the browser.
*/
interface DataProvider {
open class Error(msg: String,cause: Throwable?=null): Exception(msg,cause)
class NotFoundException(msg: String="record not found",cause: Throwable? = null): Error(msg, cause)
class WriteFailedException(msg: String="can't write", cause: Throwable?=null): Error(msg,cause)
/**
* Read named record/file
* @throws NotFoundException
*/
fun <T>read(name: String,f: (DataSource)->T): T
/**
* Write to a named record / file.
* @throws WriteFailedException
*/
fun write(name: String,f: (DataSink)->Unit)
/**
* Delete if exists, or do nothing.
*/
fun delete(name: String)
/**
* List all record names in this source
*/
fun list(): List<String>
}

View File

@ -1,6 +1,5 @@
package net.sergeych.bintools
@Suppress("unused")
interface DataSink {
fun writeByte(data: Byte)
@ -25,9 +24,9 @@ interface DataSink {
}
fun writeVarUInt(value: UInt) { Varint.encodeUnsigned(value.toULong(), this)}
fun writeVarInt(value: Int) { Varint.encodeSigned(value.toLong(), this)}
fun writeVarInt(value: UInt) { Varint.encodeSigned(value.toLong(), this)}
fun writeSmartUInt(value: UInt) { Smartint.encodeUnsigned(value.toULong(), this)}
fun writeSmartInt(value: Int) { Smartint.encodeSigned(value.toLong(), this)}
fun writeSmartInt(value: UInt) { Smartint.encodeSigned(value.toLong(), this)}
}
inline fun <reified T:Any>DataSink.writeNumber(value: T) {

View File

@ -6,7 +6,6 @@ package net.sergeych.bintools
* like multiplatform version of DataInput
*
*/
@Suppress("unused")
interface DataSource {
/**
@ -16,12 +15,6 @@ interface DataSource {
fun readByte(): Byte
/**
* true if there is no more data available and next read operation will surely
* throw EndOfData. Can return null if it is impossible to determine (for some
* async sources)
*/
fun isEnd(): Boolean? = null
fun readUByte() = readByte().toUByte()
@ -40,7 +33,7 @@ interface DataSource {
fun readDouble() = Double.fromBits(readI64())
fun readFloat() = Float.fromBits(readI32())
fun readFloat() = Float.fromBits(readI32()).toFloat()
fun readSmartUInt(): UInt = Smartint.decodeUnsigned(this).toUInt()
fun readSmartInt(): Int = Smartint.decodeSigned(this).toInt()
@ -51,14 +44,12 @@ interface DataSource {
}
fun ByteArray.toDataSource(): DataSource =
object : DataSource {
var position = 0
private set
@Suppress("RedundantNullableReturnType")
override fun isEnd(): Boolean? = position == size
override fun readByte(): Byte =
if (position < size) this@toDataSource[position++]
else throw DataSource.EndOfData()
@ -68,23 +59,5 @@ fun ByteArray.toDataSource(): DataSource =
}
}
@Suppress("unused")
fun UByteArray.toDataSource(): DataSource =
object : DataSource {
var position = 0
private set
@Suppress("RedundantNullableReturnType")
override fun isEnd(): Boolean? = position == size
override fun readByte(): Byte =
if (position < size) this@toDataSource[position++].toByte()
else throw DataSource.EndOfData()
override fun toString(): String {
return "ASrc[$position]: ${encodeToHex()}"
}
}
inline fun <reified T : Any> DataSource.readNumber(): T = Smartint.decode(this) as T

View File

@ -1,223 +0,0 @@
package net.sergeych.bintools
import kotlinx.serialization.serializer
import net.sergeych.bipack.BipackDecoder
import net.sergeych.bipack.BipackEncoder
import kotlin.reflect.KProperty
import kotlin.reflect.KType
import kotlin.reflect.typeOf
/**
* Generic storage of binary content. PArsec uses boss encoding to store everything in it
* in a convenient way. See [KVStorage.stored], [KVStorage.invoke] and
* [KVStorage.optStored] delegates. The [MemoryKVStorage] is an implementation that stores
* values in memory, allowing to connect some other (e.g. persistent storage) later in a
* completely transparent way. It can also be used to cache values on the fly.
*
* Also, it is possible to use [read] and [write] where delegated properties
* do not fit well.
*/
@Suppress("unused")
interface KVStorage {
operator fun get(key: String): ByteArray?
operator fun set(key: String, value: ByteArray?)
/**
* Check whether key is in storage.
* Default implementation uses [keys]. You may override it for performance
*/
operator fun contains(key: String): Boolean = key in keys
val keys: Set<String>
/**
* Get number of object in the storage
* Default implementation uses [keys]. You may override it for performance
*/
val size: Int get() = keys.size
/**
* Clears all objects in the storage
* Default implementation uses [keys]. You may override it for performance
*/
fun clear() {
for (k in keys) this[k] = null
}
/**
* Default implementation uses [keys]. You may override it for performance
*/
fun isEmpty() = size == 0
/**
* Default implementation uses [keys]. You may override it for performance
*/
fun isNotEmpty() = size != 0
/**
* Add all elements from another storage, overwriting any existing
* keys.
*/
fun addAll(other: KVStorage) {
for (k in other.keys) {
this[k] = other[k]
}
}
/**
* Delete element by key
*/
fun delete(key: String) {
set(key, null)
}
}
/**
* Write
*/
inline fun <reified T>KVStorage.write(key: String,value: T) {
this[key] = BipackEncoder.encode<T>(value)
}
@Suppress("unused")
inline fun <reified T>KVStorage.save(key: String,value: T?) {
if( value != null ) write(key, value)
else delete(key)
}
inline fun <reified T:Any>KVStorage.read(key: String): T? =
this[key]?.let { BipackDecoder.decode<T>(it) }
@Suppress("unused")
inline fun <reified T:Any>KVStorage.load(key: String): T? = read(key)
inline operator fun <reified T> KVStorage.invoke(defaultValue: T,overrideName: String? = null) =
KVStorageDelegate<T>(this, typeOf<T>(), defaultValue, overrideName)
inline fun <reified T> KVStorage.stored(defaultValue: T, overrideName: String? = null) =
KVStorageDelegate<T>(this, typeOf<T>(), defaultValue, overrideName)
inline fun <reified T> KVStorage.optStored(overrideName: String? = null) =
KVStorageDelegate<T?>(this, typeOf<T?>(), null, overrideName)
class KVStorageDelegate<T>(
private val storage: KVStorage,
type: KType,
private val defaultValue: T,
private val overrideName: String? = null,
) {
private fun name(property: KProperty<*>): String = overrideName ?: property.name
private var cachedValue: T = defaultValue
private var cacheReady = false
private val serializer = serializer(type)
@Suppress("UNCHECKED_CAST")
operator fun getValue(thisRef: Any?, property: KProperty<*>): T {
if (cacheReady) return cachedValue
val data = storage.get(name(property))
if (data == null)
cachedValue = defaultValue
else
cachedValue = BipackDecoder.decode(data.toDataSource(), serializer) as T
cacheReady = true
return cachedValue
}
operator fun setValue(thisRef: Any?, property: KProperty<*>, value: T) {
// if (!cacheReady || value != cachedValue) {
cachedValue = value
cacheReady = true
storage[name(property)] = BipackEncoder.encode(serializer, value)
// }
}
}
/**
* Memory storage. Allows connecting to another storage (e.g. persistent one) at come
* point later in a transparent way.
*/
class MemoryKVStorage(copyFrom: KVStorage? = null) : KVStorage {
// is used when connected:
private var underlying: KVStorage? = null
// is used while underlying is null:
private val data = mutableMapOf<String, ByteArray>()
/**
* Connect some other storage. All existing data will be copied to the [other]
* storage. After this call all data access will be routed to [other] storage.
*/
@Suppress("unused")
fun connectToStorage(other: KVStorage) {
other.addAll(this)
underlying = other
data.clear()
}
/**
* Get data from either memory or a connected storage, see [connectToStorage]
*/
override fun get(key: String): ByteArray? {
underlying?.let {
return it[key]
}
return data[key]
}
/**
* Put data to memory storage or connected storage if [connectToStorage] was called
*/
override fun set(key: String, value: ByteArray?) {
underlying?.let { it[key] = value } ?: run {
if (value != null) data[key] = value
else data.remove(key)
}
}
/**
* Checks the item exists in the memory storage or connected one, see[connectToStorage]
*/
override fun contains(key: String): Boolean {
underlying?.let { return key in it }
return key in data
}
override val keys: Set<String>
get() = underlying?.keys ?: data.keys
override fun clear() {
underlying?.clear() ?: data.clear()
}
init {
copyFrom?.let { addAll(it) }
}
}
/**
* Create per-platform default named storage.
*
* - In the browser, it uses the `Window.localStorage` prefixing items
* by a string containing the [name]
*
* - In the JVM environment it uses folder-based storage on the file system. The name
* is considered to be a folder name (the whole path which will be automatically created)
* using the following rules:
* - when the name starts with slash (`/`) it is treated as an absolute path to a folder
* - when the name contains slash, it is considered to be a relative folder to the
* `User.home` directory, like "`~/`" on unix systems.
* - otherwise, the folder will be created in "`~/.local_storage`" parent directory
* (which also will be created if needed).
*
* - For the native platorms it is not yet implemented (but will be soon).
*
* See [DataKVStorage] and [DataProvider] to implement a KVStorage on filesystems and like,
* and `FileDataProvider` class on JVM target.
*/
expect fun defaultNamedStorage(name: String): KVStorage

View File

@ -1,64 +0,0 @@
package net.sergeych.bintools
/**
* Most Recently Used keys Cache.
* Maintains the specified size, removed least used elements on insertion. Element usage is
* when it is inserted, updated or accessed (with [get]). Least recently used (LRU) keys
* are automatically removed to maintain the [maxSize].
*
* Note that the cost, [MRUCache] is slower than [MutableMap].
*/
class MRUCache<K,V>(val maxSize: Int,
private val cache: LinkedHashMap<K,V> = LinkedHashMap()
): MutableMap<K,V> by cache {
private fun checkSize() {
while(cache.size > maxSize) {
cache.remove(cache.keys.first())
}
}
/**
* Put the [value] associated with [key] which becomes MRU whether it existed in the cache or was added now.
*
* If [size] == [maxSize] LRU key will be dropped.
*
* @return old value for the [key] or null
*/
override fun put(key: K, value: V): V? {
// we need it to become MRU, so we remove it to clear its position
val oldValue = cache.remove(key)
// now we always add, not update, so it will become MRU element:
cache.put(key,value).also { checkSize() }
return oldValue
}
/**
* Put all the key-value pairs, this is exactly same as calling [put] in the same
* order. Note that is the [from] map is not linked and its size is greater than
* [maxSize], some unpredictable keys will not be added. To be exact, only last
* [maxSize] keys will be added by the order providing by [from] map entries
* enumerator.
*
* If from is [LinkedHashMap] or like, onl
*/
override fun putAll(from: Map<out K, V>) {
// maybe we should optimize it not to add unnecessary first keys
for( e in from) {
put(e.key,e.value)
checkSize()
}
}
/**
* Get the value associated with the [key]. It makes the [key] a MRU (last to delete)
*/
override fun get(key: K): V? {
return cache[key]?.also {
cache.remove(key)
cache[key] = it
}
}
override fun toString(): String = cache.toString()
}

View File

@ -24,7 +24,6 @@ class JsonPacker : MotherPacker {
return Json.encodeToString(serializer(type), payload).encodeToByteArray()
}
@Suppress("UNCHECKED_CAST")
override fun <T> unpack(type: KType, packed: ByteArray): T {
return Json.decodeFromString<T>(
serializer(type) as KSerializer<T>,

View File

@ -106,15 +106,12 @@ fun UByte.encodeToHex(length: Int = 0) = toLong().encodeToHex(length)
fun ULong.encodeToHex(length: Int = 0) = toLong().encodeToHex(length)
fun ByteArray.encodeToHex(separator: String = " "): String = joinToString(separator) { it.toUByte().encodeToHex(2) }
fun UByteArray.encodeToHex(separator: String = " "): String = joinToString(separator) { it.encodeToHex(2) }
@Suppress("unused")
fun Collection<Byte>.encodeToHex(separator: String = " "): String = joinToString(separator) { it.toUByte().encodeToHex(2) }
fun ByteArray.toDump(wide: Boolean = false): String = toDumpLines(wide).joinToString("\n")
fun UByteArray.toDump(wide: Boolean = false): String = asByteArray().toDumpLines(wide).joinToString("\n")
fun ByteArray.toDumpLines(wide: Boolean = false): List<String> {
val lineSize = if (wide) 32 else 16

View File

@ -3,7 +3,6 @@ package net.sergeych.bipack
import kotlinx.datetime.Instant
import kotlinx.serialization.DeserializationStrategy
import kotlinx.serialization.ExperimentalSerializationApi
import kotlinx.serialization.KSerializer
import kotlinx.serialization.descriptors.SerialDescriptor
import kotlinx.serialization.descriptors.StructureKind
import kotlinx.serialization.encoding.AbstractDecoder
@ -37,7 +36,6 @@ class BipackDecoder(
input.readNumber<UInt>().toShort()
else
input.readNumber()
override fun decodeInt(): Int =
if (fixedNumber) input.readI32()
else if (nextIsUnsigned) input.readNumber<UInt>().toInt() else input.readNumber()
@ -45,7 +43,6 @@ class BipackDecoder(
override fun decodeLong(): Long =
if( fixedNumber ) input.readI64()
else if (nextIsUnsigned) input.readNumber<ULong>().toLong() else input.readNumber()
override fun decodeFloat(): Float = input.readFloat()
override fun decodeDouble(): Double = input.readDouble()
override fun decodeChar(): Char = Char(input.readNumber<UInt>().toInt())
@ -60,8 +57,7 @@ class BipackDecoder(
override fun decodeEnum(enumDescriptor: SerialDescriptor): Int = input.readNumber<UInt>().toInt()
override fun decodeElementIndex(descriptor: SerialDescriptor): Int {
if (elementIndex >= elementsCount)
return CompositeDecoder.DECODE_DONE
if (elementIndex >= elementsCount) return CompositeDecoder.DECODE_DONE
nextIsUnsigned = false
for (a in descriptor.getElementAnnotations(elementIndex)) {
when (a) {
@ -79,8 +75,6 @@ class BipackDecoder(
else
super.decodeSerializableValue(deserializer)
}
override fun decodeSequentially(): Boolean = isCollection
override fun beginStructure(descriptor: SerialDescriptor): CompositeDecoder {
@ -127,11 +121,7 @@ class BipackDecoder(
super.endStructure(descriptor)
}
override fun decodeNotNullMark(): Boolean = try {
decodeBoolean()
} catch (_: DataSource.EndOfData) {
false
}
override fun decodeNotNullMark(): Boolean = decodeBoolean()
@ExperimentalSerializationApi
override fun decodeNull(): Nothing? = null
@ -144,16 +134,7 @@ class BipackDecoder(
inline fun <reified T> decode(source: DataSource): T = decode(source, serializer())
inline fun <reified T> decode(source: ByteArray): T =
decode(source.toDataSource(), serializer())
fun <T> decode(serializer: KSerializer<T>, source: ByteArray): T =
decode(source.toDataSource(), serializer)
inline fun <reified T> decode(source: UByteArray): T =
decode(source.toDataSource(), serializer())
fun <T> decode(serializer: KSerializer<T>, source: UByteArray): T =
decode(source.toDataSource(), serializer)
}
}
inline fun <reified T> ByteArray.decodeFromBipack() = BipackDecoder.decode<T>(this)
@Suppress("unused")
inline fun <reified T> UByteArray.decodeFromBipack() = BipackDecoder.decode<T>(this)

View File

@ -126,8 +126,3 @@ class BipackEncoder(val output: DataSink) : AbstractEncoder() {
}
}
@Suppress("unused")
inline fun <reified T> toBipackUByteArray(value: T): UByteArray = BipackEncoder.encode(value).toUByteArray()
@Suppress("unused")
inline fun <reified T> toBipackByteArray(value: T): ByteArray = BipackEncoder.encode(value)

View File

@ -6,13 +6,11 @@ import net.sergeych.bintools.MotherPacker
import net.sergeych.bintools.toDataSource
import kotlin.reflect.KType
@Suppress("unused")
class MotherBipack : MotherPacker {
override fun <T> pack(type: KType, payload: T): ByteArray {
return BipackEncoder.encode(serializer(type), payload)
}
@Suppress("UNCHECKED_CAST")
override fun <T> unpack(type: KType, packed: ByteArray): T {
return BipackDecoder.decode<T>(packed.toDataSource(),
serializer(type) as KSerializer<T>)

View File

@ -4,16 +4,9 @@ import kotlinx.serialization.SerialInfo
/**
* If this annotation is presented in some @Serializable class definition, its instances
* will be serialized with the leading number of fields. This allows extending class later
* will be serialized with leading number of fields. This allows to extend class later
* providing new parameters __to the end of the class__ and _with default values__.
*
* __IMPORTANT NOTE__. Since version 0.0.7 it's been also possible to use default values
* for non-serialized fields after the end-of-data. If the source reports it correctly, e.g.
* [net.sergeych.bintools.DataSource.isEnd] returns true, the unset fields are initialized
* with default value. This approach ___is not working when the loading instance is not the last
* in the deciding array!___, still it is useful to decode isolated objects. We recommend to
* use [Extendable] where needed and possible.
*
* Whe deserializing such instances from previous version binaries, the new parameters
* will get default values.
*

View File

@ -1,15 +0,0 @@
package net.sergeych.synctools
/**
* Thread-safe multiplatform counter
*/
@Suppress("unused")
class AtomicCounter(initialValue: Long = 0) : AtomicValue<Long>(initialValue) {
fun incrementAndGet(): Long = op { ++actualValue }
fun getAndIncrement(): Long = op { actualValue++ }
fun decrementAndGet(): Long = op { --actualValue }
fun getAndDecrement(): Long = op { actualValue-- }
}

View File

@ -1,37 +0,0 @@
package net.sergeych.synctools
/**
* Multiplatform (JS and battery included) atomically mutable value.
* Actual value can be either changed in a block of [mutate] when
* new value _depends on the current value_ or use a same [value]
* property that is thread-safe where there are threads and just safe
* otherwise ;)
*/
open class AtomicValue<T>(initialValue: T) {
var actualValue = initialValue
protected set
protected val op = ProtectedOp()
/**
* Change the value: get the current and set to the returned, all in the
* atomic operation. All other mutating requests including assigning to [value]
* will be blocked and queued.
* @return result of the mutation. Note that immediate call to property [value]
* could already return modified bu some other thread value!
*/
fun mutate(mutator: (T) -> T): T = op {
actualValue = mutator(actualValue)
actualValue
}
/**
* Atomic get or set the value. Atomic get means if there is a [mutate] in progress
* it will wait until the mutation finishes and then return the correct result.
*/
var value: T
get() = op { actualValue }
set(value) {
mutate { value }
}
}

View File

@ -1,60 +0,0 @@
package net.sergeych.synctools
import kotlin.contracts.ExperimentalContracts
import kotlin.contracts.InvocationKind
import kotlin.contracts.contract
/**
* Multiplatform interface to perform a regular (not suspend) operation
* protected by a platform mutex (where necessary). Get real implementation
* with [ProtectedOp] and use it with [ProtectedOpImplementation.withLock] and
* [ProtectedOpImplementation.invoke]
*/
interface ProtectedOpImplementation {
/**
* Get a lock. Be sure to release it.
* The recommended way is using [ProtectedOpImplementation.withLock] and
* [ProtectedOpImplementation.invoke]
*/
fun lock()
/**
* Release a lock.
* The recommended way is using [ProtectedOpImplementation.withLock] and
* [ProtectedOpImplementation.invoke]
*/
fun unlock()
}
@ExperimentalContracts
inline fun <T> ProtectedOpImplementation.withLock(f: () -> T): T {
contract {
callsInPlace(f, InvocationKind.EXACTLY_ONCE)
}
lock()
return try {
f()
} finally {
unlock()
}
}
/**
* Run a block mutualy-exclusively, see [ProtectedOp]
*/
operator fun <T> ProtectedOpImplementation.invoke(f: () -> T): T = withLock(f)
/**
* Get the platform-depended implementation of a mutex. It does nothing in the
* browser and use appropriate mechanics on JVM and native targets. See
* [ProtectedOpImplementation.invoke], [ProtectedOpImplementation.withLock]
* ```kotlin
* val op = ProtectedOp()
* //...
* op {
* // mutually exclusive execution
* println("sequential execution here")
* }
* ~~~
*/
expect fun ProtectedOp(): ProtectedOpImplementation

View File

@ -1,23 +0,0 @@
package net.sergeych.synctools
/**
* Platform-independent interface to thread wait/notify. Does nothing in JS/browser,
* and uses appropriate mechanics on other platforms.
*/
@Suppress("EXPECT_ACTUAL_CLASSIFIERS_ARE_IN_BETA_WARNING")
expect class WaitHandle() {
/**
* Wait for [wakeUp] as long as [milliseconds] milliseconds, or forever.
* Notice it returns immediately on the single-theaded platforms like JS.
* @param milliseconds to wait, use 0 to wait indefinitely
* @return true if [wakeUp] was called before the timeout, false on timeout.
*/
fun await(milliseconds: Long=0): Boolean
/**
* Awake all [await]'ing threads. Does nothing in the single-threaded JS
* environment
*/
fun wakeUp()
}

View File

@ -1,16 +0,0 @@
package bintools
import net.sergeych.bintools.CRC
import net.sergeych.bintools.encodeToHex
import kotlin.test.Test
class CrcTest {
@Test
fun testVectors() {
val x = byteArrayOf(1,2,3,4,5)
val crc = CRC.crc8(x)
println("->> ${x.toList()}")
println("->> ${crc.encodeToHex()}")
println("->> ${crc}")
}
}

View File

@ -1,11 +1,7 @@
package bintools
import net.sergeych.bintools.MRUCache
import net.sergeych.bintools.toDump
import kotlin.test.Test
import kotlin.test.assertEquals
import kotlin.test.assertNull
import kotlin.test.assertTrue
class TestTools {
@Test
@ -20,42 +16,4 @@ class TestTools {
println(res.toDump())
}
}
@Test
fun testCache() {
val cache = MRUCache<Int,String>(3)
cache.putAll( mapOf(1 to "one", 2 to "two", 3 to "three", 4 to "four" ) )
assertNull(cache[0])
// this actually should reset MRU for 2:
assertEquals("two", cache[2])
assertNull(cache[1])
assertEquals(3, cache.size)
assertTrue { 3 in cache }
assertTrue { 4 in cache }
// now MRU is 2 (checked in assertEquals above) so LRU to drop is 3!
cache[5] = "five"
assertEquals(3, cache.size)
assertTrue { 2 in cache }
assertTrue { 4 in cache }
assertTrue { 5 in cache }
cache.getOrPut(3) { "new three"}
assertEquals(3, cache.size)
assertTrue { 2 in cache }
assertTrue { 3 in cache }
assertTrue { 5 in cache }
cache[2] = "New Two"
cache[6] = "six"
// 2 is now second used
// amd 6 is MRU, oldest is therefore 5
assertEquals(3, cache.size)
assertTrue { 2 in cache }
assertTrue { 6 in cache }
assertTrue { 3 in cache }
}
}

View File

@ -30,7 +30,6 @@ data class Foobar2(val bar: Int, val foo: Int, val other: Int = -1)
@Framed
data class FoobarF1(val bar: Int, val foo: Int = 117)
@Suppress("unused")
@Serializable
@Framed
@SerialName("bipack.FoobarF1")
@ -47,14 +46,6 @@ data class FoobarF3(val bar: Int, val foo: Int, val other: Int = -1)
@CrcProtected()
data class FoobarFP1(val bar: Int, val foo: Int, val other: Int = -1)
@Serializable
sealed class SC1 {
@Serializable
class Nested : SC1()
}
@Suppress("unused")
class BipackEncoderTest {
@Serializable
@ -358,7 +349,7 @@ class BipackEncoderTest {
@Test
fun testInstant() {
val x = Clock.System.now()
println(BipackEncoder.encode(x).toDump())
// println( BipackEncoder.encode(x).toDump() )
val y = BipackDecoder.decode<Instant>(BipackEncoder.encode(x))
assertEquals(x.toEpochMilliseconds(), y.toEpochMilliseconds())
}
@ -371,7 +362,7 @@ class BipackEncoderTest {
@Fixed
val i: UInt,
@Fixed
val li: ULong,
val li: ULong
)
@Serializable
@ -382,80 +373,27 @@ class BipackEncoderTest {
@Unsigned
val i: UInt,
@Unsigned
val li: ULong,
val li: ULong
)
@Test
fun vectors() {
val x = UInts(7u, 64000.toUShort(), 66000u, 931127140399u)
val p = BipackEncoder.encode(x)
val x = UInts(7u, 64000.toUShort(), 66000u, 931127140399u);
val p = BipackEncoder.encode(x);
println(p.toDump())
println(p.encodeToBase64Compact())
val y = BipackDecoder.decode<UInts>(p)
assertEquals(x, y)
val xv = VarUInts(7u, 64000.toUShort(), 66000u, 931127140399u)
val pv = BipackEncoder.encode(xv)
val xv = VarUInts(7u, 64000.toUShort(), 66000u, 931127140399u);
val pv = BipackEncoder.encode(xv);
println(pv.toDump())
println(pv.encodeToBase64Compact())
val yv = BipackDecoder.decode<VarUInts>(pv)
assertEquals(xv, yv)
println(xv)
println(yv)
}
@Test
fun testStrangeUnpack() {
@Serializable
data class SFoo(val code: Int, val s1: String? = null, val s2: String? = null)
val z = BipackEncoder.encode(117)
println(z.toDump())
val sf = BipackDecoder.decode<SFoo>(z)
println(sf)
}
@Serializable
enum class TU1 {
N1, N2, N3, N4
}
@Test
fun testUnsignedEnums() {
val p1 = BipackEncoder.encode(TU1.N4)
// val p2 = BipackEncoder.encode(3u)
println(p1.toDump())
// println(p2.toDump())
val t2 = BipackDecoder.decode<TU1>(p1)
assertEquals(TU1.N4, t2)
assertEquals(0x0cu, p1[0].toUByte())
}
@Test
fun testClosedSerialization() {
val x: SC1 = SC1.Nested()
val b = BipackEncoder.encode(x)
println(b.toDump())
val y = BipackDecoder.decode<SC1>(b)
println(y)
}
@Serializable
data class T1(@Fixed val i: Byte)
@Test
fun testFixedByte() {
fun t1(i: Int) {
val packed = BipackEncoder.encode(T1(i.toByte()))
println(packed.toDump())
assertEquals(1, packed.size)
assertEquals(i, BipackDecoder.decode<T1>(packed).i.toInt())
}
t1(127)
t1(-127)
t1(1)
t1(-1)
}
}

View File

@ -1,20 +0,0 @@
package net.sergeych.synctools
import kotlin.test.Test
import kotlin.test.assertEquals
class AtomicCounterTest {
@Test
fun incrementAndDecrement() {
val ac = AtomicCounter(7)
assertEquals(7, ac.getAndIncrement())
assertEquals(8, ac.value)
assertEquals(9, ac.incrementAndGet())
assertEquals(9, ac.value)
assertEquals(9, ac.getAndDecrement())
assertEquals(8, ac.value)
assertEquals(7, ac.decrementAndGet())
assertEquals(7, ac.value)
}
}

View File

@ -1,25 +0,0 @@
package net.sergeych.bintools
/**
* Create per-platform default named storage.
*
* - In the browser, it uses the `Window.localStorage` prefixing items
* by a string containing the [name]
*
* - In the JVM environment it uses folder-based storage on the file system. The name
* is considered to be a folder name (the whole path which will be automatically created)
* using the following rules:
* - when the name starts with slash (`/`) it is treated as an absolute path to a folder
* - when the name contains slash, it is considered to be a relative folder to the
* `User.home` directory, like "`~/`" on unix systems.
* - otherwise, the folder will be created in "`~/.local_storage`" parent directory
* (which also will be created if needed).
*
* - For the native platorms it is not yet implemented (but will be soon).
*
* See [DataKVStorage] and [DataProvider] to implement a KVStorage on filesystems and like,
* and `FileDataProvider` class on JVM target.
*/
actual fun defaultNamedStorage(name: String): KVStorage {
TODO("Not yet implemented")
}

View File

@ -1,27 +0,0 @@
package net.sergeych.synctools
import kotlinx.atomicfu.locks.ReentrantLock
/**
* Get the platform-depended implementation of a mutex. It does nothing in the
* browser and use appropriate mechanics on JVM and native targets. See
* [ProtectedOpImplementation.invoke], [ProtectedOpImplementation.withLock]
* ```kotlin
* val op = ProtectedOp()
* //...
* op {
* // mutually exclusive execution
* println("sequential execution here")
* }
* ~~~
*/
actual fun ProtectedOp(): ProtectedOpImplementation = object : ProtectedOpImplementation {
private val access = ReentrantLock()
override fun lock() {
access.lock()
}
override fun unlock() {
access.unlock()
}
}

View File

@ -1,38 +0,0 @@
package net.sergeych.synctools
import kotlinx.coroutines.TimeoutCancellationException
import kotlinx.coroutines.channels.Channel
import kotlinx.coroutines.runBlocking
import kotlinx.coroutines.withTimeout
/**
* Platform-independent interface to thread wait/notify. Does nothing in JS/browser,
* and uses appropriate mechanics on other platforms.
*/
@Suppress("EXPECT_ACTUAL_CLASSIFIERS_ARE_IN_BETA_WARNING")
actual class WaitHandle {
private val channel = Channel<Unit>()
actual fun await(milliseconds: Long): Boolean {
return runBlocking {
try {
if( milliseconds > 0) {
withTimeout(milliseconds) {
channel.receive()
true
}
}
else {
channel.receive()
true
}
}
catch(_: TimeoutCancellationException) {
false
}
}
}
actual fun wakeUp() {
runBlocking { channel.send(Unit) }
}
}

View File

@ -1,25 +0,0 @@
package net.sergeych.bintools
/**
* Create per-platform default named storage.
*
* - In the browser, it uses the `Window.localStorage` prefixing items
* by a string containing the [name]
*
* - In the JVM environment it uses folder-based storage on the file system. The name
* is considered to be a folder name (the whole path which will be automatically created)
* using the following rules:
* - when the name starts with slash (`/`) it is treated as an absolute path to a folder
* - when the name contains slash, it is considered to be a relative folder to the
* `User.home` directory, like "`~/`" on unix systems.
* - otherwise, the folder will be created in "`~/.local_storage`" parent directory
* (which also will be created if needed).
*
* - For the native platorms it is not yet implemented (but will be soon).
*
* See [DataKVStorage] and [DataProvider] to implement a KVStorage on filesystems and like,
* and `FileDataProvider` class on JVM target.
*/
actual fun defaultNamedStorage(name: String): KVStorage {
TODO("Not yet implemented")
}

View File

@ -1,17 +0,0 @@
package net.sergeych.synctools
import kotlinx.atomicfu.locks.ReentrantLock
/**
* Native implementation uses `ReentrantLock`]
*/
actual fun ProtectedOp(): ProtectedOpImplementation = object : ProtectedOpImplementation {
private val access = ReentrantLock()
override fun lock() {
access.lock()
}
override fun unlock() {
access.unlock()
}
}

View File

@ -1,34 +0,0 @@
package net.sergeych.synctools
import kotlinx.coroutines.TimeoutCancellationException
import kotlinx.coroutines.channels.Channel
import kotlinx.coroutines.runBlocking
import kotlinx.coroutines.withTimeout
@Suppress("EXPECT_ACTUAL_CLASSIFIERS_ARE_IN_BETA_WARNING")
actual class WaitHandle {
private val channel = Channel<Unit>()
actual fun await(milliseconds: Long): Boolean {
return runBlocking {
try {
if( milliseconds > 0) {
withTimeout(milliseconds) {
channel.receive()
true
}
}
else {
channel.receive()
true
}
}
catch(_: TimeoutCancellationException) {
false
}
}
}
actual fun wakeUp() {
runBlocking { channel.send(Unit) }
}
}

View File

@ -1,25 +0,0 @@
package net.sergeych.bintools
/**
* Create per-platform default named storage.
*
* - In the browser, it uses the `Window.localStorage` prefixing items
* by a string containing the [name]
*
* - In the JVM environment it uses folder-based storage on the file system. The name
* is considered to be a folder name (the whole path which will be automatically created)
* using the following rules:
* - when the name starts with slash (`/`) it is treated as an absolute path to a folder
* - when the name contains slash, it is considered to be a relative folder to the
* `User.home` directory, like "`~/`" on unix systems.
* - otherwise, the folder will be created in "`~/.local_storage`" parent directory
* (which also will be created if needed).
*
* - For the native platorms it is not yet implemented (but will be soon).
*
* See [DataKVStorage] and [DataProvider] to implement a KVStorage on filesystems and like,
* and `FileDataProvider` class on JVM target.
*/
actual fun defaultNamedStorage(name: String): KVStorage {
TODO("Not yet implemented")
}

View File

@ -1,17 +0,0 @@
package net.sergeych.synctools
import kotlinx.atomicfu.locks.ReentrantLock
/**
* Native implementation uses `ReentrantLock`]
*/
actual fun ProtectedOp(): ProtectedOpImplementation = object : ProtectedOpImplementation {
private val access = ReentrantLock()
override fun lock() {
access.lock()
}
override fun unlock() {
access.unlock()
}
}

View File

@ -1,34 +0,0 @@
package net.sergeych.synctools
import kotlinx.coroutines.TimeoutCancellationException
import kotlinx.coroutines.channels.Channel
import kotlinx.coroutines.runBlocking
import kotlinx.coroutines.withTimeout
@Suppress("EXPECT_ACTUAL_CLASSIFIERS_ARE_IN_BETA_WARNING")
actual class WaitHandle {
private val channel = Channel<Unit>()
actual fun await(milliseconds: Long): Boolean {
return runBlocking {
try {
if( milliseconds > 0) {
withTimeout(milliseconds) {
channel.receive()
true
}
}
else {
channel.receive()
true
}
}
catch(_: TimeoutCancellationException) {
false
}
}
}
actual fun wakeUp() {
runBlocking { channel.send(Unit) }
}
}

View File

@ -1,42 +0,0 @@
package net.sergeych.bintools
import kotlinx.browser.localStorage
import net.sergeych.mp_tools.decodeBase64Compact
import net.sergeych.mp_tools.encodeToBase64Compact
import org.w3c.dom.Storage
import org.w3c.dom.set
actual fun defaultNamedStorage(name: String): KVStorage = BrowserKVStorage(name, localStorage)
/**
* Default KV storage in browser. Use if with `localStorage` or `sessionStorage`. It uses
* prefix for storage values not to collide with other data, beware of it.
*/
class BrowserKVStorage(keyPrefix: String, private val bst: Storage) : KVStorage {
private val prefix = "$keyPrefix:"
fun k(key: String) = "$prefix$key"
override fun get(key: String): ByteArray? {
return bst.getItem(k(key))?.decodeBase64Compact()
}
override fun set(key: String, value: ByteArray?) {
val corrected = k(key)
if (value == null)
bst.removeItem(corrected)
else
bst.set(corrected, value.encodeToBase64Compact())
}
override val keys: Set<String>
get() {
val kk = mutableListOf<String>()
for (i in 0 until bst.length) {
val k = bst.key(i) ?: break
if( k.startsWith(prefix)) {
kk += k.substring(prefix.length)
}
}
return kk.toSet()
}
}

View File

@ -1,9 +0,0 @@
package net.sergeych.synctools
/**
* JS is single-threaded, so we don't need any additional protection:
*/
actual fun ProtectedOp(): ProtectedOpImplementation = object : ProtectedOpImplementation {
override fun lock() {}
override fun unlock() {}
}

View File

@ -1,13 +0,0 @@
package net.sergeych.synctools
@Suppress("EXPECT_ACTUAL_CLASSIFIERS_ARE_IN_BETA_WARNING")
actual class WaitHandle {
actual fun await(milliseconds: Long): Boolean {
// in JS we can't wait: no threads
return true
}
actual fun wakeUp() {
// in JS we can't wait: no threads
}
}

View File

@ -1,59 +0,0 @@
package net.sergeych.bintools
import java.io.InputStream
import java.io.OutputStream
import java.nio.file.Path
import kotlin.io.path.*
class FileDataProvider(val folder: Path) : DataProvider {
class Source(private val input: InputStream) : DataSource {
override fun readByte(): Byte {
val b = input.read()
if (b < 0) throw DataSource.EndOfData()
return b.toByte()
}
override fun readBytes(size: Int): ByteArray {
return input.readNBytes2(size).also {
if (it.size < size) throw DataSource.EndOfData()
}
}
}
class Sink(private val out: OutputStream) : DataSink {
override fun writeByte(data: Byte) {
out.write(data.toInt())
}
}
override fun <T> read(name: String, f: (DataSource) -> T): T = folder.resolve(name).inputStream().buffered().use {
f(Source(it))
}
override fun write(name: String, f: (DataSink) -> Unit) {
folder.resolve(name).outputStream().use { f(Sink(it)) }
}
override fun delete(name: String) {
println("file: $folder -- $name")
folder.resolve(name).deleteExisting()
}
override fun list(): List<String> = folder
.listDirectoryEntries()
.filter { it.isRegularFile() && it.isReadable() }
.map { it.name }
}
/**
* Compatibility with Java8 and android. Read up to N bytes
*/
fun InputStream.readNBytes2(size: Int): ByteArray {
val result = ByteArray(size)
val len = read(result)
return if (len < size)
result.sliceArray(0..<len)
else
result
}

View File

@ -1,21 +0,0 @@
package net.sergeych.bintools
import java.nio.file.Paths
import kotlin.io.path.createDirectories
actual fun defaultNamedStorage(name: String): KVStorage {
val rootFolder = Paths.get(when {
// absolute path
name.startsWith("/") -> name
// path - assume the caller knows what to do
name.contains("/") -> name
// simple name - we will create it in the user home:
else -> {
val home = System.getProperty("user.home")
"$home/.local_storage/$name"
}
})
rootFolder.createDirectories()
val provider = FileDataProvider(rootFolder)
return DataKVStorage(provider)
}

View File

@ -1,34 +0,0 @@
@file:Suppress("unused")
package net.sergeych.synctools
import java.nio.channels.CompletionHandler
import kotlin.coroutines.Continuation
import kotlin.coroutines.resume
import kotlin.coroutines.resumeWithException
/**
* Helper class to handle Java continuation with Kotlin coroutines.
* Usage sample:
* ```kotlin
* val socket = withContext(Dispatchers.IO) {
* AsynchronousSocketChannel.open()
* }
* suspendCoroutine { cont ->
* socket.connect(address.socketAddress, cont, VoidCompletionHandler)
* }
* ```
*/
open class ContinuationHandler<T> : CompletionHandler<T, Continuation<T>> {
override fun completed(result: T, attachment: Continuation<T>) {
attachment.resume(result)
}
override fun failed(exc: Throwable, attachment: Continuation<T>) {
attachment.resumeWithException(exc)
}
}
object VoidCompletionHandler : ContinuationHandler<Void>()
object IntCompletionHandler : ContinuationHandler<Int>()

View File

@ -1,19 +0,0 @@
package net.sergeych.synctools
import java.util.concurrent.locks.ReentrantLock
/**
* Get the platform-depended implementation of a mutex-protected operation.
* JVM version uses a concealed object synchronization pattern (per-object monitor lock)
*/
actual fun ProtectedOp(): ProtectedOpImplementation = object : ProtectedOpImplementation {
private val access = ReentrantLock()
override fun lock() {
access.lock()
}
override fun unlock() {
access.unlock()
}
}

View File

@ -1,22 +0,0 @@
package net.sergeych.synctools
@Suppress("EXPECT_ACTUAL_CLASSIFIERS_ARE_IN_BETA_WARNING")
actual class WaitHandle {
private val access = Object()
actual fun await(milliseconds: Long): Boolean {
return synchronized(access) {
try {
access.wait(milliseconds)
true
}
catch(_: InterruptedException) {
false
}
}
}
actual fun wakeUp() {
synchronized(access) { access.notifyAll() }
}
}

View File

@ -1,39 +0,0 @@
package net.sergeych.bintools
import kotlin.test.Test
import kotlin.test.assertEquals
import kotlin.test.assertNull
import kotlin.test.assertTrue
class KVStorage_jvmKtTest {
@Test
fun testFileStorage() {
val s1 = defaultNamedStorage("test_mp_bintools")
for( n in s1.keys.toList()) s1.delete(n)
assertTrue(s1.keys.isEmpty())
var foo by s1("unknown")
assertEquals(foo, "unknown")
foo = "bar"
assertEquals(foo, "bar")
var answer by s1.optStored<Int>()
assertNull(answer)
answer = 42
assertEquals(answer, 42)
answer = 43
println("----------------------------------------------------------------")
val s2 = defaultNamedStorage("test_mp_bintools")
val foo1 by s2.stored("?", "foo")
val answer1: Int? by s2.optStored("answer")
assertEquals("bar", foo1)
assertEquals(43, answer1)
for( i in 0..< 13 ) {
s2.write("test_$i", "payload_$i")
}
}
}

View File

@ -1,25 +0,0 @@
package net.sergeych.bintools
/**
* Create per-platform default named storage.
*
* - In the browser, it uses the `Window.localStorage` prefixing items
* by a string containing the [name]
*
* - In the JVM environment it uses folder-based storage on the file system. The name
* is considered to be a folder name (the whole path which will be automatically created)
* using the following rules:
* - when the name starts with slash (`/`) it is treated as an absolute path to a folder
* - when the name contains slash, it is considered to be a relative folder to the
* `User.home` directory, like "`~/`" on unix systems.
* - otherwise, the folder will be created in "`~/.local_storage`" parent directory
* (which also will be created if needed).
*
* - For the native platorms it is not yet implemented (but will be soon).
*
* See [DataKVStorage] and [DataProvider] to implement a KVStorage on filesystems and like,
* and `FileDataProvider` class on JVM target.
*/
actual fun defaultNamedStorage(name: String): KVStorage {
TODO("Not yet implemented")
}

View File

@ -1,17 +0,0 @@
package net.sergeych.synctools
import kotlinx.atomicfu.locks.ReentrantLock
/**
* Native implementation uses `ReentrantLock`]
*/
actual fun ProtectedOp(): ProtectedOpImplementation = object : ProtectedOpImplementation {
private val access = ReentrantLock()
override fun lock() {
access.lock()
}
override fun unlock() {
access.unlock()
}
}

View File

@ -1,34 +0,0 @@
package net.sergeych.synctools
import kotlinx.coroutines.TimeoutCancellationException
import kotlinx.coroutines.channels.Channel
import kotlinx.coroutines.runBlocking
import kotlinx.coroutines.withTimeout
@Suppress("EXPECT_ACTUAL_CLASSIFIERS_ARE_IN_BETA_WARNING")
actual class WaitHandle {
private val channel = Channel<Unit>()
actual fun await(milliseconds: Long): Boolean {
return runBlocking {
try {
if( milliseconds > 0) {
withTimeout(milliseconds) {
channel.receive()
true
}
}
else {
channel.receive()
true
}
}
catch(_: TimeoutCancellationException) {
false
}
}
}
actual fun wakeUp() {
runBlocking { channel.send(Unit) }
}
}

View File

@ -1,25 +0,0 @@
package net.sergeych.bintools
/**
* Create per-platform default named storage.
*
* - In the browser, it uses the `Window.localStorage` prefixing items
* by a string containing the [name]
*
* - In the JVM environment it uses folder-based storage on the file system. The name
* is considered to be a folder name (the whole path which will be automatically created)
* using the following rules:
* - when the name starts with slash (`/`) it is treated as an absolute path to a folder
* - when the name contains slash, it is considered to be a relative folder to the
* `User.home` directory, like "`~/`" on unix systems.
* - otherwise, the folder will be created in "`~/.local_storage`" parent directory
* (which also will be created if needed).
*
* - For the native platorms it is not yet implemented (but will be soon).
*
* See [DataKVStorage] and [DataProvider] to implement a KVStorage on filesystems and like,
* and `FileDataProvider` class on JVM target.
*/
actual fun defaultNamedStorage(name: String): KVStorage {
TODO("Not yet implemented")
}

View File

@ -1,17 +0,0 @@
package net.sergeych.synctools
import kotlinx.atomicfu.locks.ReentrantLock
/**
* Native implementation uses `ReentrantLock`]
*/
actual fun ProtectedOp(): ProtectedOpImplementation = object : ProtectedOpImplementation {
private val access = ReentrantLock()
override fun lock() {
access.lock()
}
override fun unlock() {
access.unlock()
}
}

View File

@ -1,34 +0,0 @@
package net.sergeych.synctools
import kotlinx.coroutines.TimeoutCancellationException
import kotlinx.coroutines.channels.Channel
import kotlinx.coroutines.runBlocking
import kotlinx.coroutines.withTimeout
@Suppress("EXPECT_ACTUAL_CLASSIFIERS_ARE_IN_BETA_WARNING")
actual class WaitHandle {
private val channel = Channel<Unit>()
actual fun await(milliseconds: Long): Boolean {
return runBlocking {
try {
if( milliseconds > 0) {
withTimeout(milliseconds) {
channel.receive()
true
}
}
else {
channel.receive()
true
}
}
catch(_: TimeoutCancellationException) {
false
}
}
}
actual fun wakeUp() {
runBlocking { channel.send(Unit) }
}
}

View File

@ -1,25 +0,0 @@
package net.sergeych.bintools
/**
* Create per-platform default named storage.
*
* - In the browser, it uses the `Window.localStorage` prefixing items
* by a string containing the [name]
*
* - In the JVM environment it uses folder-based storage on the file system. The name
* is considered to be a folder name (the whole path which will be automatically created)
* using the following rules:
* - when the name starts with slash (`/`) it is treated as an absolute path to a folder
* - when the name contains slash, it is considered to be a relative folder to the
* `User.home` directory, like "`~/`" on unix systems.
* - otherwise, the folder will be created in "`~/.local_storage`" parent directory
* (which also will be created if needed).
*
* - For the native platorms it is not yet implemented (but will be soon).
*
* See [DataKVStorage] and [DataProvider] to implement a KVStorage on filesystems and like,
* and `FileDataProvider` class on JVM target.
*/
actual fun defaultNamedStorage(name: String): KVStorage {
TODO("Not yet implemented")
}

View File

@ -1,17 +0,0 @@
package net.sergeych.synctools
import kotlinx.atomicfu.locks.ReentrantLock
/**
* Native implementation uses `ReentrantLock`]
*/
actual fun ProtectedOp(): ProtectedOpImplementation = object : ProtectedOpImplementation {
private val access = ReentrantLock()
override fun lock() {
access.lock()
}
override fun unlock() {
access.unlock()
}
}

View File

@ -1,34 +0,0 @@
package net.sergeych.synctools
import kotlinx.coroutines.TimeoutCancellationException
import kotlinx.coroutines.channels.Channel
import kotlinx.coroutines.runBlocking
import kotlinx.coroutines.withTimeout
@Suppress("EXPECT_ACTUAL_CLASSIFIERS_ARE_IN_BETA_WARNING")
actual class WaitHandle {
private val channel = Channel<Unit>()
actual fun await(milliseconds: Long): Boolean {
return runBlocking {
try {
if( milliseconds > 0) {
withTimeout(milliseconds) {
channel.receive()
true
}
}
else {
channel.receive()
true
}
}
catch(_: TimeoutCancellationException) {
false
}
}
}
actual fun wakeUp() {
runBlocking { channel.send(Unit) }
}
}

View File

@ -1,5 +0,0 @@
package net.sergeych.bintools
actual fun defaultNamedStorage(name: String): KVStorage {
TODO("Not yet implemented")
}

View File

@ -1,17 +0,0 @@
package net.sergeych.synctools
import kotlinx.atomicfu.locks.ReentrantLock
/**
* Native implementation uses `ReentrantLock`]
*/
actual fun ProtectedOp(): ProtectedOpImplementation = object : ProtectedOpImplementation {
private val access = ReentrantLock()
override fun lock() {
access.lock()
}
override fun unlock() {
access.unlock()
}
}

View File

@ -1,34 +0,0 @@
package net.sergeych.synctools
import kotlinx.coroutines.TimeoutCancellationException
import kotlinx.coroutines.channels.Channel
import kotlinx.coroutines.runBlocking
import kotlinx.coroutines.withTimeout
@Suppress("EXPECT_ACTUAL_CLASSIFIERS_ARE_IN_BETA_WARNING")
actual class WaitHandle {
private val channel = Channel<Unit>()
actual fun await(milliseconds: Long): Boolean {
return runBlocking {
try {
if( milliseconds > 0) {
withTimeout(milliseconds) {
channel.receive()
true
}
}
else {
channel.receive()
true
}
}
catch(_: TimeoutCancellationException) {
false
}
}
}
actual fun wakeUp() {
runBlocking { channel.send(Unit) }
}
}

View File

@ -1,63 +0,0 @@
package net.sergeych.bintools
import kotlinx.browser.localStorage
import net.sergeych.mp_tools.decodeBase64Compact
import net.sergeych.mp_tools.encodeToBase64Compact
import org.w3c.dom.Storage
import org.w3c.dom.set
/**
* Create per-platform default named storage.
*
* - In the browser, it uses the `Window.localStorage` prefixing items
* by a string containing the [name]
*
* - In the JVM environment it uses folder-based storage on the file system. The name
* is considered to be a folder name (the whole path which will be automatically created)
* using the following rules:
* - when the name starts with slash (`/`) it is treated as an absolute path to a folder
* - when the name contains slash, it is considered to be a relative folder to the
* `User.home` directory, like "`~/`" on unix systems.
* - otherwise, the folder will be created in "`~/.local_storage`" parent directory
* (which also will be created if needed).
*
* - For the native platorms it is not yet implemented (but will be soon).
*
* See [DataKVStorage] and [DataProvider] to implement a KVStorage on filesystems and like,
* and `FileDataProvider` class on JVM target.
*/
actual fun defaultNamedStorage(name: String): KVStorage = BrowserKVStorage(name, localStorage)
/**
* Default KV storage in browser. Use if with `localStorage` or `sessionStorage`. It uses
* prefix for storage values not to collide with other data, beware of it.
*/
class BrowserKVStorage(keyPrefix: String, private val bst: Storage) : KVStorage {
private val prefix = "$keyPrefix:"
fun k(key: String) = "$prefix$key"
override fun get(key: String): ByteArray? {
return bst.getItem(k(key))?.decodeBase64Compact()
}
override fun set(key: String, value: ByteArray?) {
val corrected = k(key)
if (value == null)
bst.removeItem(corrected)
else
bst.set(corrected, value.encodeToBase64Compact())
}
override val keys: Set<String>
get() {
val kk = mutableListOf<String>()
for (i in 0 until bst.length) {
val k = bst.key(i) ?: break
if( k.startsWith(prefix)) {
kk += k.substring(prefix.length)
}
}
return kk.toSet()
}
}

View File

@ -1,27 +0,0 @@
package net.sergeych.synctools
import kotlinx.atomicfu.locks.ReentrantLock
/**
* Get the platform-depended implementation of a mutex. It does nothing in the
* browser and use appropriate mechanics on JVM and native targets. See
* [ProtectedOpImplementation.invoke], [ProtectedOpImplementation.withLock]
* ```kotlin
* val op = ProtectedOp()
* //...
* op {
* // mutually exclusive execution
* println("sequential execution here")
* }
* ~~~
*/
actual fun ProtectedOp(): ProtectedOpImplementation = object: ProtectedOpImplementation {
val rlock = ReentrantLock()
override fun lock() {
rlock.lock()
}
override fun unlock() {
rlock.unlock()
}
}

View File

@ -1,19 +0,0 @@
package net.sergeych.synctools
/**
* Platform-independent interface to thread wait/notify. Does nothing in JS/browser,
* and uses appropriate mechanics on other platforms.
*
* Wasm is effictively songle threaded at the moment
*/
@Suppress("EXPECT_ACTUAL_CLASSIFIERS_ARE_IN_BETA_WARNING")
actual class WaitHandle {
actual fun await(milliseconds: Long): Boolean {
// in JS we can't wait: no threads
return true
}
actual fun wakeUp() {
// in JS we can't wait: no threads
}
}

View File

@ -1,38 +0,0 @@
import net.sergeych.bintools.*
import kotlin.test.Test
import kotlin.test.assertEquals
import kotlin.test.assertNull
import kotlin.test.assertTrue
class StorageTest {
@Test
fun storageTest() {
val s1 = defaultNamedStorage("test_mp_bintools")
for (n in s1.keys.toList()) s1.delete(n)
assertTrue(s1.keys.isEmpty())
var foo by s1("unknown")
assertEquals(foo, "unknown")
foo = "bar"
assertEquals(foo, "bar")
var answer by s1.optStored<Int>()
assertNull(answer)
answer = 42
assertEquals(answer, 42)
answer = 43
val s2 = defaultNamedStorage("test_mp_bintools")
val foo1 by s2.stored("?", "foo")
val answer1: Int? by s2.optStored("answer")
assertEquals("bar", foo1)
assertEquals(43, answer1)
for (i in 0..<13) {
s2.write("test_$i", "payload_$i")
}
}
}