611 lines
19 KiB
TypeScript
Executable File
611 lines
19 KiB
TypeScript
Executable File
#!/usr/bin/env -S deno run -A
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/*! otorp (C) 2021-present SheetJS -- http://sheetjs.com */
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import { resolve } from "https://deno.land/std@0.171.0/path/mod.ts";
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import { TerminalSpinner } from "https://deno.land/x/spinners/mod.ts";
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// #region util.ts
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var u8_to_dataview = (array: Uint8Array): DataView => new DataView(array.buffer, array.byteOffset, array.byteLength);
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var u8str = (u8: Uint8Array): string => new TextDecoder().decode(u8);
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var u8concat = (u8a: Uint8Array[]): Uint8Array => {
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var len = u8a.reduce((acc: number, x: Uint8Array) => acc + x.length, 0);
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var out = new Uint8Array(len);
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var off = 0;
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u8a.forEach(u8 => { out.set(u8, off); off += u8.length; });
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return out;
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};
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var indent = (str: string, depth: number /* = 1 */): string => str.split(/\n/g).map(x => x && " ".repeat(depth) + x).join("\n");
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function u8indexOf(u8: Uint8Array, data: string | number | Uint8Array, byteOffset?: number): number {
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//if(Buffer.isBuffer(u8)) return u8.indexOf(data, byteOffset);
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if(typeof data == "number") return u8.indexOf(data, byteOffset);
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var l = byteOffset;
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if(typeof data == "string") {
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outs: while((l = u8.indexOf(data.charCodeAt(0), l)) > -1) {
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++l;
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for(var j = 1; j < data.length; ++j) if(u8[l+j-1] != data.charCodeAt(j)) continue outs;
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return l - 1;
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}
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} else {
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outb: while((l = u8.indexOf(data[0], l)) > -1) {
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++l;
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for(var j = 1; j < data.length; ++j) if(u8[l+j-1] != data[j]) continue outb;
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return l - 1;
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}
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}
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return -1;
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}
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// #endregion
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// #region proto.ts
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type Ptr = [number];
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/** Parse an integer from the varint that can be exactly stored in a double */
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function parse_varint49(buf: Uint8Array, ptr?: Ptr): number {
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var l = ptr ? ptr[0] : 0;
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var usz = buf[l] & 0x7F;
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varint: if(buf[l++] >= 0x80) {
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usz |= (buf[l] & 0x7F) << 7; if(buf[l++] < 0x80) break varint;
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usz |= (buf[l] & 0x7F) << 14; if(buf[l++] < 0x80) break varint;
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usz |= (buf[l] & 0x7F) << 21; if(buf[l++] < 0x80) break varint;
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usz += (buf[l] & 0x7F) * Math.pow(2, 28); ++l; if(buf[l++] < 0x80) break varint;
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usz += (buf[l] & 0x7F) * Math.pow(2, 35); ++l; if(buf[l++] < 0x80) break varint;
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usz += (buf[l] & 0x7F) * Math.pow(2, 42); ++l; if(buf[l++] < 0x80) break varint;
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}
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if(ptr) ptr[0] = l;
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return usz;
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}
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function write_varint49(v: number): Uint8Array {
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var usz = new Uint8Array(7);
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usz[0] = (v & 0x7F);
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var L = 1;
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sz: if(v > 0x7F) {
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usz[L-1] |= 0x80; usz[L] = (v >> 7) & 0x7F; ++L;
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if(v <= 0x3FFF) break sz;
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usz[L-1] |= 0x80; usz[L] = (v >> 14) & 0x7F; ++L;
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if(v <= 0x1FFFFF) break sz;
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usz[L-1] |= 0x80; usz[L] = (v >> 21) & 0x7F; ++L;
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if(v <= 0xFFFFFFF) break sz;
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usz[L-1] |= 0x80; usz[L] = ((v/0x100) >>> 21) & 0x7F; ++L;
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if(v <= 0x7FFFFFFFF) break sz;
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usz[L-1] |= 0x80; usz[L] = ((v/0x10000) >>> 21) & 0x7F; ++L;
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if(v <= 0x3FFFFFFFFFF) break sz;
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usz[L-1] |= 0x80; usz[L] = ((v/0x1000000) >>> 21) & 0x7F; ++L;
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}
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return usz.slice(0, L);
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}
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/** Parse a 32-bit signed integer from the raw varint */
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function varint_to_i32(buf: Uint8Array): number {
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var l = 0, i32 = buf[l] & 0x7F;
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varint: if(buf[l++] >= 0x80) {
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i32 |= (buf[l] & 0x7F) << 7; if(buf[l++] < 0x80) break varint;
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i32 |= (buf[l] & 0x7F) << 14; if(buf[l++] < 0x80) break varint;
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i32 |= (buf[l] & 0x7F) << 21; if(buf[l++] < 0x80) break varint;
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i32 |= (buf[l] & 0x7F) << 28;
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}
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return i32;
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}
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interface ProtoItem {
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offset?: number;
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data: Uint8Array;
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type: number;
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}
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type ProtoField = Array<ProtoItem>
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type ProtoMessage = Array<ProtoField>;
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/** Shallow parse of a message */
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function parse_shallow(buf: Uint8Array): ProtoMessage {
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var out: ProtoMessage = [], ptr: Ptr = [0];
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while(ptr[0] < buf.length) {
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var off = ptr[0];
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var num = parse_varint49(buf, ptr);
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var type = num & 0x07; num = Math.floor(num / 8);
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var len = 0;
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var res: Uint8Array;
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if(num == 0) break;
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switch(type) {
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case 0: {
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var l = ptr[0];
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while(buf[ptr[0]++] >= 0x80);
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res = buf.slice(l, ptr[0]);
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} break;
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case 5: len = 4; res = buf.slice(ptr[0], ptr[0] + len); ptr[0] += len; break;
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case 1: len = 8; res = buf.slice(ptr[0], ptr[0] + len); ptr[0] += len; break;
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case 2: len = parse_varint49(buf, ptr); res = buf.slice(ptr[0], ptr[0] + len); ptr[0] += len; break;
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case 3: // Start group
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case 4: // End group
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default: throw new Error(`PB Type ${type} for Field ${num} at offset ${off}`);
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}
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var v: ProtoItem = { offset: off, data: res, type };
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if(out[num] == null) out[num] = [v];
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else out[num].push(v);
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}
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return out;
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}
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/** Serialize a shallow parse */
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function write_shallow(proto: ProtoMessage): Uint8Array {
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var out: Uint8Array[] = [];
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proto.forEach((field, idx) => {
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field.forEach(item => {
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out.push(write_varint49(idx * 8 + item.type));
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out.push(item.data);
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});
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});
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return u8concat(out);
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}
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function mappa<U>(data: ProtoField, cb:(_:Uint8Array) => U): U[] {
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if(!data) return [];
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return data.map((d) => { try {
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return cb(d.data);
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} catch(e) {
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var m = e.message?.match(/at offset (\d+)/);
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if(m) e.message = e.message.replace(/at offset (\d+)/, "at offset " + (+m[1] + (d.offset||0)));
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throw e;
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}});
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}
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// #endregion
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// #region descriptor.ts
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var TYPES = [
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"error",
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"double",
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"float",
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"int64",
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"uint64",
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"int32",
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"fixed64",
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"fixed32",
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"bool",
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"string",
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"group",
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"message",
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"bytes",
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"uint32",
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"enum",
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"sfixed32",
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"sfixed64",
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"sint32",
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"sint64"
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];
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interface FileOptions {
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javaPackage?: string;
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javaOuterClassname?: string;
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javaMultipleFiles?: string;
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goPackage?: string;
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}
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function parse_FileOptions(buf: Uint8Array): FileOptions {
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var data = parse_shallow(buf);
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var out: FileOptions = {};
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if(data[1]?.[0]) out.javaPackage = u8str(data[1][0].data);
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if(data[8]?.[0]) out.javaOuterClassname = u8str(data[8][0].data);
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if(data[11]?.[0]) out.goPackage = u8str(data[11][0].data);
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return out;
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}
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interface EnumValue {
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name?: string;
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number?: number;
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}
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function parse_EnumValue(buf: Uint8Array): EnumValue {
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var data = parse_shallow(buf);
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var out: EnumValue = {};
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if(data[1]?.[0]) out.name = u8str(data[1][0].data);
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if(data[2]?.[0]) out.number = varint_to_i32(data[2][0].data);
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return out;
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}
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interface Enum {
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name?: string;
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value?: EnumValue[];
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}
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function parse_Enum(buf: Uint8Array): Enum {
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var data = parse_shallow(buf);
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var out: Enum = {};
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if(data[1]?.[0]) out.name = u8str(data[1][0].data);
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out.value = mappa(data[2], parse_EnumValue);
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return out;
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}
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var write_Enum = (en: Enum): string => {
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var out = [`enum ${en.name} {`];
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en.value?.forEach(({name, number}) => out.push(` ${name} = ${number};`));
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return out.concat(`}`).join("\n");
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};
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interface FieldOptions {
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packed?: boolean;
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deprecated?: boolean;
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}
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function parse_FieldOptions(buf: Uint8Array): FieldOptions {
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var data = parse_shallow(buf);
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var out: FieldOptions = {};
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if(data[2]?.[0]) out.packed = !!data[2][0].data;
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if(data[3]?.[0]) out.deprecated = !!data[3][0].data;
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return out;
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}
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interface Field {
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name?: string;
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extendee?: string;
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number?: number;
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label?: number;
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type?: number;
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typeName?: string;
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defaultValue?: string;
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options?: FieldOptions;
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}
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function parse_Field(buf: Uint8Array): Field {
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var data = parse_shallow(buf);
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var out: Field = {};
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if(data[1]?.[0]) out.name = u8str(data[1][0].data);
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if(data[2]?.[0]) out.extendee = u8str(data[2][0].data);
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if(data[3]?.[0]) out.number = varint_to_i32(data[3][0].data);
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if(data[4]?.[0]) out.label = varint_to_i32(data[4][0].data);
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if(data[5]?.[0]) out.type = varint_to_i32(data[5][0].data);
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if(data[6]?.[0]) out.typeName = u8str(data[6][0].data);
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if(data[7]?.[0]) out.defaultValue = u8str(data[7][0].data);
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if(data[8]?.[0]) out.options = parse_FieldOptions(data[8][0].data);
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return out;
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}
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function write_Field(field: Field): string {
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var out = [];
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var label = ["", "optional ", "required ", "repeated "][field.label||0] || "";
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var type = field.typeName || TYPES[field.type||69] || "s5s";
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var opts = [];
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if(field.defaultValue) opts.push(`default = ${field.defaultValue}`);
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if(field.options?.packed) opts.push(`packed = true`);
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if(field.options?.deprecated) opts.push(`deprecated = true`);
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var os = opts.length ? ` [${opts.join(", ")}]`: "";
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out.push(`${label}${type} ${field.name} = ${field.number}${os};`);
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return out.length ? indent(out.join("\n"), 1) : "";
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}
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function write_extensions(ext: Field[], xtra = false, coalesce = true): string {
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var res: string[] = [];
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var xt: Array<[string, Array<Field>]> = [];
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ext.forEach(ext => {
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if(!ext.extendee) return;
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var row = coalesce ?
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xt.find(x => x[0] == ext.extendee) :
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(xt[xt.length - 1]?.[0] == ext.extendee ? xt[xt.length - 1]: null);
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if(row) row[1].push(ext);
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else xt.push([ext.extendee, [ext]]);
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});
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xt.forEach(extrow => {
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var out = [`extend ${extrow[0]} {`];
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extrow[1].forEach(ext => out.push(write_Field(ext)));
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res.push(out.concat(`}`).join("\n") + (xtra ? "\n" : ""));
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});
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return res.join("\n");
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}
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interface ExtensionRange { start?: number; end?: number; }
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interface MessageType {
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name?: string;
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nestedType?: MessageType[];
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enumType?: Enum[];
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field?: Field[];
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extension?: Field[];
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extensionRange?: ExtensionRange[];
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}
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function parse_mtype(buf: Uint8Array): MessageType {
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var data = parse_shallow(buf);
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var out: MessageType = {};
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if(data[1]?.[0]) out.name = u8str(data[1][0].data);
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if(data[2]?.length >= 1) out.field = mappa(data[2], parse_Field);
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if(data[3]?.length >= 1) out.nestedType = mappa(data[3], parse_mtype);
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if(data[4]?.length >= 1) out.enumType = mappa(data[4], parse_Enum);
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if(data[6]?.length >= 1) out.extension = mappa(data[6], parse_Field);
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if(data[5]?.length >= 1) out.extensionRange = data[5].map(d => {
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var data = parse_shallow(d.data);
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var out: ExtensionRange = {};
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if(data[1]?.[0]) out.start = varint_to_i32(data[1][0].data);
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if(data[2]?.[0]) out.end = varint_to_i32(data[2][0].data);
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return out;
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});
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return out;
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}
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var write_mtype = (message: MessageType): string => {
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var out = [ `message ${message.name} {` ];
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message.nestedType?.forEach(m => out.push(indent(write_mtype(m), 1)));
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message.enumType?.forEach(en => out.push(indent(write_Enum(en), 1)));
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message.field?.forEach(field => out.push(write_Field(field)));
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if(message.extensionRange) message.extensionRange.forEach(er => out.push(` extensions ${er.start} to ${(er.end||0) - 1};`));
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if(message.extension?.length) out.push(indent(write_extensions(message.extension), 1));
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return out.concat(`}`).join("\n");
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};
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interface Descriptor {
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name?: string;
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package?: string;
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dependency?: string[];
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messageType?: MessageType[];
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enumType?: Enum[];
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extension?: Field[];
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options?: FileOptions;
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}
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function parse_FileDescriptor(buf: Uint8Array): Descriptor {
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var data = parse_shallow(buf);
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var out: Descriptor = {};
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if(data[1]?.[0]) out.name = u8str(data[1][0].data);
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if(data[2]?.[0]) out.package = u8str(data[2][0].data);
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if(data[3]?.[0]) out.dependency = data[3].map(x => u8str(x.data));
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if(data[4]?.length >= 1) out.messageType = mappa(data[4], parse_mtype);
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if(data[5]?.length >= 1) out.enumType = mappa(data[5], parse_Enum);
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if(data[7]?.length >= 1) out.extension = mappa(data[7], parse_Field);
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if(data[8]?.[0]) out.options = parse_FileOptions(data[8][0].data);
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return out;
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}
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var write_FileDescriptor = (pb: Descriptor): string => {
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var out = [
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'syntax = "proto2";',
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''
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];
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if(pb.dependency) pb.dependency.forEach((n: string) => { if(n) out.push(`import "${n}";`); });
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if(pb.package) out.push(`package ${pb.package};\n`);
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if(pb.options) {
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var o = out.length;
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if(pb.options.javaPackage) out.push(`option java_package = "${pb.options.javaPackage}";`);
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if(pb.options.javaOuterClassname?.replace(/\W/g, "")) out.push(`option java_outer_classname = "${pb.options.javaOuterClassname}";`);
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if(pb.options.javaMultipleFiles) out.push(`option java_multiple_files = true;`);
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if(pb.options.goPackage) out.push(`option go_package = "${pb.options.goPackage}";`);
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if(out.length > o) out.push('');
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}
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pb.enumType?.forEach(en => { if(en.name) out.push(write_Enum(en) + "\n"); });
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pb.messageType?.forEach(m => { if(m.name) { var o = write_mtype(m); if(o) out.push(o + "\n"); }});
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if(pb.extension?.length) {
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var e = write_extensions(pb.extension, true, false);
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if(e) out.push(e);
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}
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return out.join("\n") + "\n";
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};
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// #endregion
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// #region macho.ts
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interface MachOEntry {
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type: number;
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subtype: number;
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offset: number;
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size: number;
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align?: number;
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data: Uint8Array;
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}
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var parse_fat = (buf: Uint8Array): MachOEntry[] => {
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var dv = u8_to_dataview(buf);
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if(dv.getUint32(0, false) !== 0xCAFEBABE) throw new Error("Unsupported file");
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var nfat_arch = dv.getUint32(4, false);
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var out: MachOEntry[] = [];
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for(var i = 0; i < nfat_arch; ++i) {
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var start = i * 20 + 8;
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var cputype = dv.getUint32(start, false);
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var cpusubtype = dv.getUint32(start+4, false);
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var offset = dv.getUint32(start+8, false);
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var size = dv.getUint32(start+12, false);
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var align = dv.getUint32(start+16, false);
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out.push({
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type: cputype,
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subtype: cpusubtype,
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offset,
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size,
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align,
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data: buf.slice(offset, offset + size)
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});
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}
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return out;
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};
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var parse_macho = (buf: Uint8Array): MachOEntry[] => {
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var dv = u8_to_dataview(buf);
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var magic = dv.getUint32(0, false);
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switch(magic) {
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// fat binary (x86_64 / aarch64)
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case 0xCAFEBABE: return parse_fat(buf);
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// x86_64
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|
case 0xCFFAEDFE: return [{
|
|
type: dv.getUint32(4, false),
|
|
subtype: dv.getUint32(8, false),
|
|
offset: 0,
|
|
size: buf.length,
|
|
data: buf
|
|
}];
|
|
}
|
|
throw new Error("Unsupported file");
|
|
};
|
|
|
|
// #endregion
|
|
|
|
// #region otorp.ts
|
|
|
|
interface OtorpEntry {
|
|
name: string;
|
|
proto: string;
|
|
}
|
|
|
|
/** Find and stringify all relevant protobuf defs */
|
|
function otorp(buf: Uint8Array, builtins = false): OtorpEntry[] {
|
|
var res = proto_offsets(buf);
|
|
var registry: {[key: string]: Descriptor} = {};
|
|
var names: Set<string> = new Set();
|
|
var out: OtorpEntry[] = [];
|
|
|
|
res.forEach((r, i) => {
|
|
if(!builtins && r[1].startsWith("google/protobuf/")) return;
|
|
var b = buf.slice(r[0], i < res.length - 1 ? res[i+1][0] : buf.length);
|
|
var pb = parse_FileDescriptorProto(b/*, r[1]*/);
|
|
names.add(r[1]);
|
|
registry[r[1]] = pb;
|
|
});
|
|
|
|
names.forEach(name => {
|
|
/* ensure partial ordering by dependencies */
|
|
names.delete(name);
|
|
var pb = registry[name];
|
|
var doit = (pb.dependency||[]).every((d: string) => !names.has(d));
|
|
if(!doit) { names.add(name); return; }
|
|
|
|
var dups = res.filter(r => r[1] == name);
|
|
if(dups.length == 1) return out.push({ name, proto: write_FileDescriptor(pb) });
|
|
|
|
/* in a fat binary, compare the defs for x86_64/aarch64 */
|
|
var pbs = dups.map(r => {
|
|
var i = res.indexOf(r);
|
|
var b = buf.slice(r[0], i < res.length - 1 ? res[i+1][0] : buf.length);
|
|
var pb = parse_FileDescriptorProto(b/*, r[1]*/);
|
|
return write_FileDescriptor(pb);
|
|
});
|
|
for(var l = 1; l < pbs.length; ++l) if(pbs[l] != pbs[0]) throw new Error(`Conflicting definitions for ${name} at offsets 0x${dups[0][0].toString(16)} and 0x${dups[l][0].toString(16)}`);
|
|
return out.push({ name, proto: pbs[0] });
|
|
});
|
|
|
|
return out;
|
|
}
|
|
export default otorp;
|
|
|
|
/** Determine if an address is being referenced */
|
|
var is_referenced = (buf: Uint8Array, pos: number): boolean => {
|
|
var dv = u8_to_dataview(buf);
|
|
|
|
/* Search for LEA reference (x86) */
|
|
for(var leaddr = 0; leaddr > -1 && leaddr < pos; leaddr = u8indexOf(buf, 0x8D, leaddr + 1))
|
|
if(dv.getUint32(leaddr + 2, true) == pos - leaddr - 6) return true;
|
|
|
|
/* Search for absolute reference to address */
|
|
try {
|
|
var headers = parse_macho(buf);
|
|
for(var i = 0; i < headers.length; ++i) {
|
|
if(pos < headers[i].offset || pos > headers[i].offset + headers[i].size) continue;
|
|
var b = headers[i].data;
|
|
var p = pos - headers[i].offset;
|
|
var ref = new Uint8Array([0,0,0,0,0,0,0,0]);
|
|
var dv = u8_to_dataview(ref);
|
|
dv.setUint32(0, p, true);
|
|
if(u8indexOf(b, ref, 0) > 0) return true;
|
|
ref[4] = 0x01;
|
|
if(u8indexOf(b, ref, 0) > 0) return true;
|
|
ref[4] = 0x00; ref[6] = 0x10;
|
|
if(u8indexOf(b, ref, 0) > 0) return true;
|
|
}
|
|
} catch(e) {throw e}
|
|
return false;
|
|
};
|
|
|
|
type OffsetList = Array<[number, string, number, number]>;
|
|
/** Generate a list of potential starting points */
|
|
var proto_offsets = (buf: Uint8Array): OffsetList => {
|
|
var meta = parse_macho(buf);
|
|
var out: OffsetList = [];
|
|
var off = 0;
|
|
/* note: this loop only works for names < 128 chars */
|
|
search: while((off = u8indexOf(buf, ".proto", off + 1)) > -1) {
|
|
var pos = off;
|
|
off += 6;
|
|
while(off - pos < 256 && buf[pos] != off - pos - 1) {
|
|
if(buf[pos] > 0x7F || buf[pos] < 0x20) continue search;
|
|
--pos;
|
|
}
|
|
if(off - pos > 250) continue;
|
|
var name = u8str(buf.slice(pos + 1, off));
|
|
if(buf[--pos] != 0x0A) continue;
|
|
if(!is_referenced(buf, pos)) { console.error(`Reference to ${name} at ${pos} not found`); continue; }
|
|
var bin = meta.find(m => m.offset <= pos && m.offset + m.size >= pos);
|
|
out.push([pos, name, bin?.type || -1, bin?.subtype || -1]);
|
|
}
|
|
return out;
|
|
};
|
|
|
|
/** Parse a descriptor that starts with the first byte of the supplied buffer */
|
|
var parse_FileDescriptorProto = (buf: Uint8Array): Descriptor => {
|
|
var l = buf.length;
|
|
while(l > 0) try {
|
|
var b = buf.slice(0,l);
|
|
var o = parse_FileDescriptor(b);
|
|
return o;
|
|
} catch(e) {
|
|
var m = e.message.match(/at offset (\d+)/);
|
|
if(m && parseInt(m[1], 10) < buf.length) l = parseInt(m[1], 10) - 1;
|
|
else --l;
|
|
}
|
|
throw new RangeError("no protobuf message in range");
|
|
};
|
|
|
|
|
|
// #endregion
|
|
|
|
let spin: TerminalSpinner;
|
|
const width = Deno.consoleSize().columns;
|
|
function process(inf: string, outf: string) {
|
|
const fi = Deno.statSync(inf);
|
|
if(fi.isDirectory) for(let info of Deno.readDirSync(inf)) {
|
|
if(spin) spin.set(inf.length > width - 4 ? "…" + inf.slice(-(width-4)) : inf);
|
|
process(inf + (inf.slice(-1) == "/" ? "" : "/") + info.name, outf);
|
|
}
|
|
try {
|
|
const buf: Uint8Array = Deno.readFileSync(inf);
|
|
var dv = u8_to_dataview(buf);
|
|
var magic = dv.getUint32(0, false);
|
|
if(![0xCAFEBABE, 0xCFFAEDFE].includes(magic)) return;
|
|
|
|
otorp(buf).forEach(({name, proto}) => {
|
|
if(!outf) return console.log(proto);
|
|
var pth = resolve(outf || "./", name.replace(/[/]/g, "$"));
|
|
try {
|
|
const str = Deno.readTextFileSync(pth);
|
|
if(str == proto) return;
|
|
throw `${pth} definition diverges!`;
|
|
} catch(e) { if(typeof e == "string") throw e; }
|
|
console.error(`writing ${name} to ${pth}`);
|
|
Deno.writeTextFileSync(pth, proto);
|
|
});
|
|
} catch(e) {}
|
|
}
|
|
|
|
function doit() {
|
|
const [ inf, outf ] = Deno.args;
|
|
if(!inf || inf == "-h" || inf == "--help") {
|
|
console.log(`usage: otorp.ts <path/to/bin> [output/folder]
|
|
|
|
if no output folder specified, log all discovered defs
|
|
if output folder specified, attempt to write defs in the folder
|
|
|
|
$ otorp.ts /Applications/Numbers.app out/ # search all files
|
|
$ otorp.ts /Applications/Numbers.app/Contents/MacOS/Numbers # search one file
|
|
`);
|
|
Deno.exit(1);
|
|
}
|
|
if(Deno.statSync(inf).isDirectory) (spin = new TerminalSpinner("")).start();
|
|
if(outf) try { Deno.mkdirSync(outf, { recursive: true }); } catch(e) {}
|
|
process(inf, outf);
|
|
if(spin) spin.stop();
|
|
}
|
|
doit();
|