pachli-android/app/proguard-rules.pro
Nik Clayton a3d45ca9ec
refactor: Convert from Gson to Moshi (#428)
Moshi is faster to decode JSON at runtime, is actively maintained, has a
smaller memory and method footprint, and a slightly smaller APK size.
Moshi also correctly creates default constructor arguments instead of
leaving them null, which was a source of `NullPointerExceptions` when
using Gson.

The conversion broadly consisted of:

- Adding `@JsonClass(generateAdapter = true)` to data classes that
marshall to/from JSON.

- Replacing `@SerializedName(value = ...)` with `@Json(name = ...)`.

- Replacing Gson instances with Moshi in Retrofit, Hilt, and tests.

- Using Moshi adapters to marshall to/from JSON instead of Gson `toJson`
/ `fromJson`.

- Deleting `Rfc3339DateJsonAdapter` and related code, and using the
equivalent adapter bundled with Moshi.

- Rewriting `GuardedBooleanAdapter` as a more generic `GuardedAdapter`.

- Deleting unused ProGuard rules; Moshi generates adapters using code
generation, not runtime reflection.

The conversion surfaced some bugs which have been fixed.

- Not all audio attachments have attachment size metadata. Don't show
the attachment preview if the metadata is missing.

- Some `throwable` were not being logged correctly.

- The wrong type was being used when parsing the response when sending a
scheduled status.

- Exceptions other than `HttpException` or `IoException` would also
cause a status to be resent. If there's a JSON error parsing a response
the status would be repeatedly sent.

- In tests strings containing error responses were not valid JSON.

- Workaround Mastodon a bug and ensure `filter.keywords` is populated,
https://github.com/mastodon/mastodon/issues/29142
2024-02-09 12:41:13 +01:00

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Prolog

# GENERAL OPTIONS
# turn on all optimizations except those that are known to cause problems on Android
-optimizations !code/simplification/cast,!field/*,!class/merging/*
-optimizationpasses 6
-allowaccessmodification
-dontusemixedcaseclassnames
-keepattributes *Annotation*
# For native methods, see http://proguard.sourceforge.net/manual/examples.html#native
-keepclasseswithmembernames class * {
native <methods>;
}
# keep setters in Views so that animations can still work.
# see http://proguard.sourceforge.net/manual/examples.html#beans
-keepclassmembers public class * extends android.view.View {
void set*(***);
*** get*();
}
# We want to keep methods in Activity that could be used in the XML attribute onClick
-keepclassmembers class * extends android.app.Activity {
public void *(android.view.View);
}
# For enumeration classes, see http://proguard.sourceforge.net/manual/examples.html#enumerations
-keepclassmembers enum * {
public static **[] values();
public static ** valueOf(java.lang.String);
}
-keepclassmembers class * implements android.os.Parcelable {
public static final ** CREATOR;
}
-keepclassmembers class **.R$* {
public static <fields>;
}
# Pachli specific options
# keep members of our model classes, they are used in json de/serialization
-keepclassmembers class app.pachli.core.network.model.** { *; }
-keep public enum app.pachli.core.network.model.*$** {
**[] $VALUES;
public *;
}
-keepclassmembers class app.pachli.core.database.model.ConversationAccountEntity { *; }
-keepclassmembers class app.pachli.core.database.model.DraftAttachment { *; }
-keep enum app.pachli.core.database.model.DraftAttachment$Type {
public *;
}
# Keep class names. Obfuscating them serves no purpose in an open source
# project and adds an additional step to de-obfuscate them when managing user
# error reports
-keepnames class *
# Retain generic signatures of classes used in MastodonApi so Retrofit works
-keep,allowobfuscation,allowshrinking class io.reactivex.rxjava3.core.Single
-keep,allowobfuscation,allowshrinking class retrofit2.Response
-keep,allowobfuscation,allowshrinking class kotlin.collections.List
-keep,allowobfuscation,allowshrinking class kotlin.collections.Map
-keep,allowobfuscation,allowshrinking class retrofit2.Call
# https://r8.googlesource.com/r8/+/refs/heads/master/compatibility-faq.md#retrofit
-keepattributes Signature
-keep class kotlin.coroutines.Continuation
# preserve line numbers for crash reporting
-keepattributes SourceFile,LineNumberTable
-renamesourcefileattribute SourceFile
# Bouncy Castle -- Keep EC
-keep class org.bouncycastle.jcajce.provider.asymmetric.EC$* { *; }
-keep class org.bouncycastle.jcajce.provider.asymmetric.ec.KeyPairGeneratorSpi$EC
# remove all logging from production apk
-assumenosideeffects class android.util.Log {
public static *** getStackTraceString(...);
public static *** d(...);
public static *** w(...);
public static *** v(...);
public static *** i(...);
}
-assumenosideeffects class java.lang.String {
public static java.lang.String format(...);
}
# remove some kotlin overhead
-assumenosideeffects class kotlin.jvm.internal.Intrinsics {
static void checkNotNull(java.lang.Object);
static void checkNotNull(java.lang.Object, java.lang.String);
static void checkParameterIsNotNull(java.lang.Object, java.lang.String);
static void checkParameterIsNotNull(java.lang.Object, java.lang.String);
static void checkNotNullParameter(java.lang.Object, java.lang.String);
static void checkExpressionValueIsNotNull(java.lang.Object, java.lang.String);
static void checkNotNullExpressionValue(java.lang.Object, java.lang.String);
static void checkReturnedValueIsNotNull(java.lang.Object, java.lang.String);
static void checkReturnedValueIsNotNull(java.lang.Object, java.lang.String, java.lang.String);
static void throwUninitializedPropertyAccessException(java.lang.String);
}
# Preference fragments can be referenced by name, ensure they remain
# https://github.com/tuskyapp/Tusky/issues/3161
-keep class * extends androidx.preference.PreferenceFragmentCompat