oss/RomPatcher.js
oss/RomPatcher.js
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removed bsp.js file since it has nothing to do with Pokemon Prism

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Marc Robledo 2024-07-20 16:31:28 +02:00
parent 725601d43f
commit 0992132c57
1 changed files with 0 additions and 101 deletions
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101
js/formats/BSP.js
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@ -1,101 +0,0 @@
/* BSP module for Rom Patcher JS v20240613 - Vagner Matheus 2016-2024 */
const BSP_MAGIC = 'BSP';
const BSP_VERSION = 1;
const BSP_MAX_SIZE = 0x1000000; // 16 megabytes
function BSP() {
this.records = [];
}
BSP.prototype.addRecord = function(o, d) {
this.records.push({offset: o, data: d});
};
BSP.prototype.toString = function() {
let s = 'Records: ' + this.records.length;
return s;
};
BSP.prototype.export = function(fileName) {
let patchFileSize = 8; // BSP magic + version
for (let i = 0; i < this.records.length; i++) {
patchFileSize += 4 + this.records[i].data.length; // offset + data length
}
let tempFile = new MarcFile(patchFileSize);
tempFile.fileName = fileName + '.bsp';
tempFile.writeString(BSP_MAGIC);
tempFile.writeU32(BSP_VERSION);
for (let i = 0; i < this.records.length; i++) {
let rec = this.records[i];
tempFile.writeU32(rec.offset);
tempFile.writeBytes(rec.data);
}
return tempFile;
};
BSP.prototype.apply = function(romFile) {
let tempFile = new MarcFile(romFile.fileSize);
romFile.copyToFile(tempFile, 0);
for (let i = 0; i < this.records.length; i++) {
tempFile.seek(this.records[i].offset);
tempFile.writeBytes(this.records[i].data);
}
return tempFile;
};
function parseBSPFile(file) {
let patchFile = new BSP();
file.seek(4); // Skip magic
let version = file.readU32();
if (version !== BSP_VERSION) {
throw new Error('Unsupported BSP version');
}
while (!file.isEOF()) {
let offset = file.readU32();
let length = file.fileSize - file.offset; // remaining bytes
let data = file.readBytes(length);
patchFile.addRecord(offset, data);
}
return patchFile;
}
function createBSPFromFiles(original, modified) {
let patch = new BSP();
while (!modified.isEOF()) {
let b1 = original.isEOF() ? 0x00 : original.readU8();
let b2 = modified.readU8();
if (b1 !== b2) {
let differentData = [];
let startOffset = modified.offset - 1;
while (b1 !== b2 && differentData.length < 0xffff) {
differentData.push(b2);
if (modified.isEOF() || differentData.length === 0xffff) {
break;
}
b1 = original.isEOF() ? 0x00 : original.readU8();
b2 = modified.readU8();
}
if (startOffset >= BSP_MAX_SIZE) {
throw new Error('Files are too big for BSP format');
return null;
}
patch.addRecord(startOffset, differentData);
}
}
return patch;
}