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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,80 @@ | ||
| import FilePoly from '../../polyfill/filePoly.js'; | ||
| import fsPoly from '../../polyfill/fsPoly.js'; | ||
| import File from '../files/file.js'; | ||
| import Patch from './patch.js'; | ||
|
|
||
| /** | ||
| * @see https://github.com/btimofeev/UniPatcher/wiki/APS-(GBA) | ||
| * @see https://github.com/Gamer2020/Unofficial-A-ptch | ||
| */ | ||
| export default class APSGBAPatch extends Patch { | ||
| static readonly FILE_SIGNATURE = Buffer.from('APS1'); | ||
|
|
||
| static async patchFrom(file: File): Promise<APSGBAPatch> { | ||
| const crcBefore = Patch.getCrcFromPath(file.getExtractedFilePath()); | ||
| let targetSize = 0; | ||
|
|
||
| await file.extractToTempFilePoly('r', async (patchFile) => { | ||
| patchFile.seek(APSGBAPatch.FILE_SIGNATURE.length); | ||
| patchFile.skipNext(4); // original file size | ||
| targetSize = (await patchFile.readNext(4)).readUInt32LE(); | ||
| }); | ||
|
|
||
| return new APSGBAPatch(file, crcBefore, undefined, targetSize); | ||
| } | ||
|
|
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| async createPatchedFile(inputRomFile: File, outputRomPath: string): Promise<void> { | ||
| return this.getFile().extractToTempFilePoly('r', async (patchFile) => { | ||
| const header = await patchFile.readNext(APSGBAPatch.FILE_SIGNATURE.length); | ||
| if (!header.equals(APSGBAPatch.FILE_SIGNATURE)) { | ||
| throw new Error(`APS (GBA) patch header is invalid: ${this.getFile().toString()}`); | ||
| } | ||
|
|
||
| patchFile.skipNext(4); // original size | ||
| patchFile.skipNext(4); // patched size | ||
|
|
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| return APSGBAPatch.writeOutputFile(inputRomFile, outputRomPath, patchFile); | ||
| }); | ||
| } | ||
|
|
||
| private static async writeOutputFile( | ||
| inputRomFile: File, | ||
| outputRomPath: string, | ||
| patchFile: FilePoly, | ||
| ): Promise<void> { | ||
| return inputRomFile.extractToTempFile(async (tempRomFile) => { | ||
| const sourceFile = await FilePoly.fileFrom(tempRomFile, 'r'); | ||
|
|
||
| await fsPoly.copyFile(tempRomFile, outputRomPath); | ||
| const targetFile = await FilePoly.fileFrom(outputRomPath, 'r+'); | ||
|
|
||
| try { | ||
| await APSGBAPatch.applyPatch(patchFile, sourceFile, targetFile); | ||
| } finally { | ||
| await targetFile.close(); | ||
| await sourceFile.close(); | ||
| } | ||
| }); | ||
| } | ||
|
|
||
| private static async applyPatch( | ||
| patchFile: FilePoly, | ||
| sourceFile: FilePoly, | ||
| targetFile: FilePoly, | ||
| ): Promise<void> { | ||
| /* eslint-disable no-await-in-loop, no-bitwise */ | ||
| while (patchFile.getPosition() < patchFile.getSize()) { | ||
| const offset = (await patchFile.readNext(4)).readUInt32LE(); | ||
| patchFile.skipNext(2); // CRC16 of original 64KiB block | ||
| patchFile.skipNext(2); // CRC16 of patched 64KiB block | ||
| const xorData = await patchFile.readNext(1024 * 1024); | ||
|
|
||
| const sourceData = await sourceFile.readAt(offset, xorData.length); | ||
| const targetData = Buffer.allocUnsafe(xorData.length); | ||
| for (let i = 0; i < xorData.length; i += 1) { | ||
| targetData[i] = (i < sourceData.length ? sourceData[i] : 0x00) ^ xorData[i]; | ||
| } | ||
| await targetFile.writeAt(targetData, offset); | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,108 @@ | ||
| import FilePoly from '../../polyfill/filePoly.js'; | ||
| import File from '../files/file.js'; | ||
| import Patch from './patch.js'; | ||
|
|
||
| enum APSN64PatchType { | ||
| SIMPLE = 0, | ||
| N64 = 1, | ||
| } | ||
|
|
||
| /** | ||
| * @see https://github.com/btimofeev/UniPatcher/wiki/APS-(N64) | ||
| */ | ||
| export default class APSN64Patch extends Patch { | ||
| static readonly FILE_SIGNATURE = Buffer.from('APS10'); | ||
|
|
||
| private readonly patchType: APSN64PatchType; | ||
|
|
||
| protected constructor( | ||
| patchType: APSN64PatchType, | ||
| file: File, | ||
| crcBefore: string, | ||
| sizeAfter: number, | ||
| ) { | ||
| super(file, crcBefore, undefined, sizeAfter); | ||
| this.patchType = patchType; | ||
| } | ||
|
|
||
| static async patchFrom(file: File): Promise<APSN64Patch> { | ||
| let patchType = APSN64PatchType.SIMPLE; | ||
| const crcBefore = Patch.getCrcFromPath(file.getExtractedFilePath()); | ||
| let targetSize = 0; | ||
|
|
||
| await file.extractToTempFilePoly('r', async (patchFile) => { | ||
| patchFile.seek(APSN64Patch.FILE_SIGNATURE.length); | ||
| patchType = (await patchFile.readNext(1)).readUInt8(); | ||
| patchFile.skipNext(1); // encoding method | ||
| patchFile.skipNext(50); // description | ||
|
|
||
| if (patchType === APSN64PatchType.SIMPLE) { | ||
| targetSize = (await patchFile.readNext(4)).readUInt32LE(); | ||
| } else if (patchType === APSN64PatchType.N64) { | ||
| patchFile.skipNext(1); // ROM format | ||
| patchFile.skipNext(2); // cart ID string (*'s from: NUS-N**X-XXX) | ||
| patchFile.skipNext(1); // country string (* from: NUS-NXX*-XXX) | ||
| patchFile.skipNext(8); // CRC within the ROM (NOT the entire ROM CRC) | ||
| patchFile.skipNext(5); // padding | ||
| targetSize = (await patchFile.readNext(4)).readUInt32LE(); | ||
| } else { | ||
| throw new Error(`APS (N64) patch type ${patchType} isn't supported: ${patchFile.getPathLike()}`); | ||
| } | ||
| }); | ||
|
|
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| return new APSN64Patch(patchType, file, crcBefore, targetSize); | ||
| } | ||
|
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| async createPatchedFile(inputRomFile: File, outputRomPath: string): Promise<void> { | ||
| return this.getFile().extractToTempFilePoly('r', async (patchFile) => { | ||
| const header = await patchFile.readNext(APSN64Patch.FILE_SIGNATURE.length); | ||
| if (!header.equals(APSN64Patch.FILE_SIGNATURE)) { | ||
| throw new Error(`APS (N64) patch header is invalid: ${this.getFile().toString()}`); | ||
| } | ||
|
|
||
| if (this.patchType === APSN64PatchType.SIMPLE) { | ||
| patchFile.seek(61); | ||
| } else if (this.patchType === APSN64PatchType.N64) { | ||
| patchFile.seek(78); | ||
| } else { | ||
| throw new Error(`APS (N64) patch type ${this.patchType} isn't supported: ${patchFile.getPathLike()}`); | ||
| } | ||
|
|
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| return APSN64Patch.writeOutputFile(inputRomFile, outputRomPath, patchFile); | ||
| }); | ||
| } | ||
|
|
||
| private static async writeOutputFile( | ||
| inputRomFile: File, | ||
| outputRomPath: string, | ||
| patchFile: FilePoly, | ||
| ): Promise<void> { | ||
| await inputRomFile.extractToFile(outputRomPath); | ||
| const targetFile = await FilePoly.fileFrom(outputRomPath, 'r+'); | ||
|
|
||
| try { | ||
| await APSN64Patch.applyPatch(patchFile, targetFile); | ||
| } finally { | ||
| await targetFile.close(); | ||
| } | ||
| } | ||
|
|
||
| private static async applyPatch(patchFile: FilePoly, targetFile: FilePoly): Promise<void> { | ||
| /* eslint-disable no-await-in-loop, no-bitwise */ | ||
| while (patchFile.getPosition() < patchFile.getSize()) { | ||
| const offset = (await patchFile.readNext(4)).readUInt32LE(); | ||
| const size = (await patchFile.readNext(1)).readUInt8(); | ||
| let data: Buffer; | ||
| if (size === 0) { | ||
| // Run-length encoding record | ||
| const byte = await patchFile.readNext(1); | ||
| const rleSize = (await patchFile.readNext(1)).readUInt8(); | ||
| data = Buffer.from(byte.toString('hex').repeat(rleSize), 'hex'); | ||
| } else { | ||
| // Standard record | ||
| data = await patchFile.readNext(size); | ||
| } | ||
| await targetFile.writeAt(data, offset); | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,27 @@ | ||
| import File from '../files/file.js'; | ||
| import APSGBAPatch from './apsGbaPatch.js'; | ||
| import APSN64Patch from './apsN64Patch.js'; | ||
| import Patch from './patch.js'; | ||
|
|
||
| /** | ||
| * @see https://github.com/btimofeev/UniPatcher/wiki/APS-(N64) | ||
| */ | ||
| export default abstract class APSPatch extends Patch { | ||
| static readonly SUPPORTED_EXTENSIONS = ['.aps']; | ||
|
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| static readonly FILE_SIGNATURE = Buffer.from('APS1'); | ||
|
|
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| static async patchFrom(file: File): Promise<Patch> { | ||
| return file.extractToTempFilePoly('r', async (patchFile) => { | ||
| patchFile.seek(APSPatch.FILE_SIGNATURE.length); | ||
|
|
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| const byteFive = (await patchFile.readNext(1)).toString(); | ||
| const byteSix = (await patchFile.readNext(1)).readUInt8(); | ||
|
|
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| if (byteFive === '0' && (byteSix === 0 || byteSix === 1)) { | ||
| return APSN64Patch.patchFrom(file); | ||
| } | ||
| return APSGBAPatch.patchFrom(file); | ||
| }); | ||
| } | ||
| } |
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