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91 lines
3.6 KiB
Markdown
91 lines
3.6 KiB
Markdown
# KSLog
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It is simple and easy-to-use tool for logging on the most popular platforms in Kotlin Multiplatform:
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[](https://insanusmokrassar.github.io/KSLog/)
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[](https://bookstack.inmo.dev/books/kslog)
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By default, KSLog is using built-in tools for logging on each supported platform:
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* `java.util.logging.Logger` for `JVM`
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* `android.util.Log` for `Android`
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* `Console` for `JS`
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But you always may create your logger and customize as you wish:
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```kotlin
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KSLog.default = KSLog { level: LogLevel, tag: String?, message: Any, throwable: Throwable? ->
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// do your logging
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}
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```
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**This library also supports native targets in experimental mode. By default all native targets will use simple printing in the console**
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## How to use
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### Fast-travel
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Just use some boring extensions like:
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```kotlin
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KSLog.i("Some message")
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// OR
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KSLog.i("Some tag", "Some message")
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// OR
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KSLog.i("Some tag", "Some message", IllegalArgumentException("So, that is exception :)"))
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// OR
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KSLog.i("Some optional tag", Exception("Optional")) { "Lazy inited message" }
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// OR
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KSLog.iS("Some optional tag", Exception("Optional")) { "Lazy inited message for suspendable calculation of text" }
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// OR EVEN
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KSLog.l(LogLevel.INFO, "Some tag", "Some message", IllegalArgumentException("So, that is exception :)"))
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// OR
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KSLog.l(LogLevel.INFO, "Some optional tag", IllegalArgumentException("So, that is exception :)")) { "And lazily inited message" }
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```
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### A little bit deeper
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There are several important "terms" in context of this library:
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* Default logger (available via `KSLog.default` or simply `KSLog`)
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* Local logger (can be created via `KSLog` functions and passed anywhere as `KSLog`)
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* Logging shortcuts like `KSLog.i`/`KSLog.info`
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* Built-in extension `Any.logger` which allow you to create logger binded to the default with the tag based on the class of receiver
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* __Be careful with the receivers: if you will use some extension like `apply`, the receiver will be different with your class inside of that `apply`__
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Every logging extension (like `KSLog.i`) have its analog with lazy inited message text and the same one with suffix `S` (like `KSLog.iS`) for the suspendable message calculation.
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Default logger can be created by passing `defaultTag` and one of variants log level filters: set or minimal loggable level. In `JVM` you also may setup any logger as base logger for default realizations of `KSLog`. Besides, you may use your own callback (on **any target platform**) as output of logging:
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```kotlin
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val logger = KSLog { logLevel, optionalTag, message, optionalThrowable ->
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println("[$logLevel] $optionalTag - $message: $optionalThrowable.stackTraceToString()")
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}
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```
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In the example above we will take the `logger` which will just print incoming data as common output.
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## Installation
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[](https://maven-badges.herokuapp.com/maven-central/dev.inmo/kslog)
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### Gradle
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```groovy
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implementation "dev.inmo:kslog:$kslog_version"
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```
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### Maven
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```xml
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<dependency>
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<groupId>dev.inmo</groupId>
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<artifactId>kslog</artifactId>
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<version>${kslog_version}</version>
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</dependency>
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```
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