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| 1 | +package org.parchmentmc.tasks |
| 2 | + |
| 3 | +import io.codechicken.diffpatch.cli.DiffPatchCli |
| 4 | +import io.codechicken.diffpatch.cli.PatchOperation |
| 5 | +import io.codechicken.diffpatch.patch.Patcher |
| 6 | +import io.codechicken.diffpatch.util.Input.SingleInput |
| 7 | +import io.codechicken.diffpatch.util.LogLevel |
| 8 | +import io.codechicken.diffpatch.util.Output |
| 9 | +import io.codechicken.diffpatch.util.PatchMode |
| 10 | +import org.gradle.api.DefaultTask |
| 11 | +import org.gradle.api.file.RegularFileProperty |
| 12 | +import org.gradle.api.provider.Property |
| 13 | +import org.gradle.api.tasks.Input |
| 14 | +import org.gradle.api.tasks.InputFile |
| 15 | +import org.gradle.api.tasks.Optional |
| 16 | +import org.gradle.api.tasks.OutputFile |
| 17 | +import org.gradle.api.tasks.PathSensitive |
| 18 | +import org.gradle.api.tasks.PathSensitivity |
| 19 | +import org.gradle.api.tasks.TaskAction |
| 20 | +import org.parchmentmc.util.path |
| 21 | +import java.io.PrintStream |
| 22 | +import java.nio.file.StandardOpenOption |
| 23 | +import kotlin.io.path.copyTo |
| 24 | +import kotlin.io.path.createParentDirectories |
| 25 | +import kotlin.io.path.deleteIfExists |
| 26 | +import kotlin.io.path.exists |
| 27 | + |
| 28 | +abstract class ApplyFilePatch : DefaultTask() { |
| 29 | + @get:InputFile |
| 30 | + @get:Optional |
| 31 | + @get:PathSensitive(PathSensitivity.NONE) |
| 32 | + abstract val patchFile: RegularFileProperty |
| 33 | + |
| 34 | + @get:InputFile |
| 35 | + @get:PathSensitive(PathSensitivity.NONE) |
| 36 | + abstract val targetFile: RegularFileProperty |
| 37 | + |
| 38 | + @get:OutputFile |
| 39 | + abstract val outputFile: RegularFileProperty |
| 40 | + |
| 41 | + @get:OutputFile |
| 42 | + abstract val rejectsFile: RegularFileProperty |
| 43 | + |
| 44 | + @get:Input |
| 45 | + abstract val mode: Property<PatchMode> |
| 46 | + |
| 47 | + @get:Input |
| 48 | + abstract val minFuzz: Property<String> |
| 49 | + |
| 50 | + @TaskAction |
| 51 | + fun patch() { |
| 52 | + outputFile.path.createParentDirectories() |
| 53 | + rejectsFile.path.createParentDirectories() |
| 54 | + val log = temporaryDir.resolve("log.txt") |
| 55 | + log.toPath().createParentDirectories().deleteIfExists() |
| 56 | + |
| 57 | + if (!patchFile.isPresent) { |
| 58 | + targetFile.path.copyTo(outputFile.path) |
| 59 | + return |
| 60 | + } |
| 61 | + |
| 62 | + val result = PrintStream(log, Charsets.UTF_8).use { logger -> |
| 63 | + PatchOperation.builder() |
| 64 | + .logTo(logger) |
| 65 | + .level(LogLevel.ALL) |
| 66 | + .mode(PatchMode.OFFSET) |
| 67 | + .minFuzz(minFuzz.get().toFloat()) |
| 68 | + .summary(false) |
| 69 | + .baseInput(SingleInput.path(targetFile.path)) |
| 70 | + .patchesInput(SingleInput.path(patchFile.path)) |
| 71 | + .patchedOutput(Output.SingleOutput.path(outputFile.path, StandardOpenOption.WRITE, StandardOpenOption.TRUNCATE_EXISTING, StandardOpenOption.CREATE)) |
| 72 | + .rejectsOutput(Output.SingleOutput.path(rejectsFile.path, StandardOpenOption.WRITE, StandardOpenOption.TRUNCATE_EXISTING, StandardOpenOption.CREATE)) |
| 73 | + .build() |
| 74 | + .operate() |
| 75 | + } |
| 76 | + |
| 77 | + if (result.exit != 0) { |
| 78 | + throw RuntimeException("Failed to apply patch, exit code ${result.exit}, see log at ${log.absolutePath}") |
| 79 | + } |
| 80 | + } |
| 81 | +} |
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