davidtamaki/sheetjs
1
Fork 0
forked from sheetjs/sheetjs
Code Pull Requests Activity

very basic numbers iwa parser

Browse Source
This commit is contained in:
SheetJS 2022-01-28 21:29:34 -05:00
parent d01661565a
commit bb997654ef
30 changed files with 2845 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
CHANGELOG.md
View File

@ -4,6 +4,10 @@ This log is intended to keep track of backwards-incompatible changes, including
but not limited to API changes and file location changes. Minor behavioral
changes may not be included if they are not expected to break existing code.
## v0.18.0
* Browser scripts only expose `XLSX` variable
## v0.17.4
* CLI script moved to `xlsx-cli` package

4
Makefile
View File

@ -53,6 +53,10 @@ bits/01_version.js: package.json
bits/18_cfb.js: node_modules/cfb/xlscfb.flow.js
cp $^ $@
bits/83_numbers.js: modules/83_numbers.js
cp $^ $@
.PHONY: clean
clean: ## Remove targets and build artifacts
rm -f $(TARGET) $(FLOWTARGET)

6
bits/21_ziputils.js
View File

@ -53,6 +53,12 @@ function getzipstr(zip, file/*:string*/, safe/*:?boolean*/)/*:?string*/ {
try { return getzipstr(zip, file); } catch(e) { return null; }
}
function getzipbin(zip, file/*:string*/, safe/*:?boolean*/)/*:any*/ {
if(!safe) return getdatabin(getzipfile(zip, file));
if(!file) return null;
try { return getzipbin(zip, file); } catch(e) { return null; }
}
function zipentries(zip) {
var k = zip.FullPaths || keys(zip.files), o = [];
for(var i = 0; i < k.length; ++i) if(k[i].slice(-1) != '/') o.push(k[i]);

507
bits/83_numbers.js Executable file
View File

@ -0,0 +1,507 @@
var NUMBERS = (function() {
var __defProp = Object.defineProperty;
var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
var __getOwnPropNames = Object.getOwnPropertyNames;
var __hasOwnProp = Object.prototype.hasOwnProperty;
var __markAsModule = function(target) {
return __defProp(target, "__esModule", { value: true });
};
var __export = function(target, all) {
for (var name in all)
__defProp(target, name, { get: all[name], enumerable: true });
};
var __reExport = function(target, module, copyDefault, desc) {
if (module && typeof module === "object" || typeof module === "function")
for (var keys = __getOwnPropNames(module), i = 0, n = keys.length, key; i < n; i++) {
key = keys[i];
if (!__hasOwnProp.call(target, key) && (copyDefault || key !== "default"))
__defProp(target, key, { get: function(k) {
return module[k];
}.bind(null, key), enumerable: !(desc = __getOwnPropDesc(module, key)) || desc.enumerable });
}
return target;
};
var __toCommonJS = /* @__PURE__ */ function(cache) {
return function(module, temp) {
return cache && cache.get(module) || (temp = __reExport(__markAsModule({}), module, 1), cache && cache.set(module, temp), temp);
};
}(typeof WeakMap !== "undefined" ? /* @__PURE__ */ new WeakMap() : 0);
// 83_numbers.ts
var numbers_exports = {};
__export(numbers_exports, {
parse_numbers: function() {
return numbers_default;
}
});
// src/util.ts
var u8_to_dataview = function(array) {
return new DataView(array.buffer, array.byteOffset, array.byteLength);
};
var u8str = function(u8) {
return new TextDecoder().decode(u8);
};
var u8concat = function(u8a) {
var len = u8a.reduce(function(acc, x) {
return acc + x.length;
}, 0);
var out = new Uint8Array(len);
var off = 0;
u8a.forEach(function(u8) {
out.set(u8, off);
off += u8.length;
});
return out;
};
// src/proto.ts
function parse_varint49(buf, ptr) {
var l = ptr ? ptr[0] : 0;
var usz = buf[l] & 127;
varint:
if (buf[l++] >= 128) {
usz |= (buf[l] & 127) << 7;
if (buf[l++] < 128)
break varint;
usz |= (buf[l] & 127) << 14;
if (buf[l++] < 128)
break varint;
usz |= (buf[l] & 127) << 21;
if (buf[l++] < 128)
break varint;
usz += (buf[l] & 127) * Math.pow(2, 28);
++l;
if (buf[l++] < 128)
break varint;
usz += (buf[l] & 127) * Math.pow(2, 35);
++l;
if (buf[l++] < 128)
break varint;
usz += (buf[l] & 127) * Math.pow(2, 42);
++l;
if (buf[l++] < 128)
break varint;
}
if (ptr)
ptr[0] = l;
return usz;
}
function varint_to_i32(buf) {
var l = 0, i32 = buf[l] & 127;
varint:
if (buf[l++] >= 128) {
i32 |= (buf[l] & 127) << 7;
if (buf[l++] < 128)
break varint;
i32 |= (buf[l] & 127) << 14;
if (buf[l++] < 128)
break varint;
i32 |= (buf[l] & 127) << 21;
if (buf[l++] < 128)
break varint;
i32 |= (buf[l] & 127) << 28;
}
return i32;
}
function parse_shallow(buf) {
var out = [], ptr = [0];
while (ptr[0] < buf.length) {
var off = ptr[0];
var num = parse_varint49(buf, ptr);
var type = num & 7;
num = Math.floor(num / 8);
var len = 0;
var res;
if (num == 0)
break;
switch (type) {
case 0:
{
var l = ptr[0];
while (buf[ptr[0]++] >= 128)
;
res = buf.slice(l, ptr[0]);
}
break;
case 5:
len = 4;
case 1:
if (!len)
len = 8;
case 2:
if (!len)
len = parse_varint49(buf, ptr);
res = buf.slice(ptr[0], ptr[0] + len);
ptr[0] += len;
break;
case 3:
case 4:
default:
throw new Error("PB Type ".concat(type, " for Field ").concat(num, " at offset ").concat(off));
}
var v = { offset: off, data: res };
if (out[num] == null)
out[num] = [v];
else
out[num].push(v);
}
return out;
}
function mappa(data, cb) {
if (!data)
return [];
return data.map(function(d) {
var _a;
try {
return cb(d.data);
} catch (e) {
var m = (_a = e.message) == null ? void 0 : _a.match(/at offset (\d+)/);
if (m)
e.message = e.message.replace(/at offset (\d+)/, "at offset " + (+m[1] + d.offset));
throw e;
}
});
}
// src/frame.ts
function deframe(buf) {
var out = [];
var l = 0;
while (l < buf.length) {
var t = buf[l++];
var len = buf[l] | buf[l + 1] << 8 | buf[l + 2] << 16;
l += 3;
out.push(process_chunk(t, buf.slice(l, l + len)));
l += len;
}
if (l !== buf.length)
throw new Error("data is not a valid framed stream!");
return u8concat(out);
}
function process_chunk(type, buf) {
if (type != 0)
throw new Error("Unexpected Snappy chunk type ".concat(type));
var ptr = [0];
var usz = parse_varint49(buf, ptr);
var chunks = [];
while (ptr[0] < buf.length) {
var tag = buf[ptr[0]] & 3;
if (tag == 0) {
var len = buf[ptr[0]++] >> 2;
if (len < 60)
++len;
else {
var c = len - 59;
len = buf[ptr[0]];
if (c > 1)
len |= buf[ptr[0] + 1] << 8;
if (c > 2)
len |= buf[ptr[0] + 2] << 16;
if (c > 3)
len |= buf[ptr[0] + 3] << 24;
len >>>= 0;
len++;
ptr[0] += c;
}
chunks.push(buf.slice(ptr[0], ptr[0] + len));
ptr[0] += len;
continue;
} else {
var offset = 0, length = 0;
if (tag == 1) {
length = (buf[ptr[0]] >> 2 & 7) + 4;
offset = (buf[ptr[0]++] & 224) << 3;
offset |= buf[ptr[0]++];
} else {
length = (buf[ptr[0]++] >> 2) + 1;
if (tag == 2) {
offset = buf[ptr[0]] | buf[ptr[0] + 1] << 8;
ptr[0] += 2;
} else {
offset = (buf[ptr[0]] | buf[ptr[0] + 1] << 8 | buf[ptr[0] + 2] << 16 | buf[ptr[0] + 3] << 24) >>> 0;
ptr[0] += 4;
}
}
chunks = [u8concat(chunks)];
if (offset == 0)
throw new Error("Invalid offset 0");
if (offset > chunks[0].length)
throw new Error("Invalid offset beyond length");
if (length >= offset) {
chunks.push(chunks[0].slice(-offset));
length -= offset;
while (length >= chunks[chunks.length - 1].length) {
chunks.push(chunks[chunks.length - 1]);
length -= chunks[chunks.length - 1].length;
}
}
chunks.push(chunks[0].slice(-offset, -offset + length));
}
}
var o = u8concat(chunks);
if (o.length != usz)
throw new Error("Unexpected length: ".concat(o.length, " != ").concat(usz));
return o;
}
// src/iwa.ts
function parse_iwa(buf) {
var out = [], ptr = [0];
while (ptr[0] < buf.length) {
var len = parse_varint49(buf, ptr);
var ai = parse_shallow(buf.slice(ptr[0], ptr[0] + len));
ptr[0] += len;
var res = {
id: varint_to_i32(ai[1][0].data),
messages: []
};
ai[2].forEach(function(b) {
var mi = parse_shallow(b.data);
var fl = varint_to_i32(mi[3][0].data);
res.messages.push({
meta: mi,
data: buf.slice(ptr[0], ptr[0] + fl)
});
ptr[0] += fl;
});
out.push(res);
}
return out;
}
// src/numbers.ts
var encode_col = function(C) {
var s = "";
for (++C; C; C = Math.floor((C - 1) / 26))
s = String.fromCharCode((C - 1) % 26 + 65) + s;
return s;
};
var encode_cell = function(c) {
return "".concat(encode_col(c.c)).concat(c.r + 1);
};
var encode_range = function(r) {
return encode_cell(r.s) + ":" + encode_cell(r.e);
};
var book_new = function() {
return { Sheets: {}, SheetNames: [] };
};
var book_append_sheet = function(wb, ws, name) {
if (!name) {
for (var i = 1; i < 9999; ++i)
if (wb.SheetNames.indexOf(name = "Sheet ".concat(i)) == -1)
break;
}
wb.SheetNames.push(name);
wb.Sheets[name] = ws;
};
function parse_numbers(cfb) {
var out = [];
cfb.FileIndex.forEach(function(s) {
if (!s.name.match(/\.iwa$/))
return;
var o;
try {
o = deframe(s.content);
} catch (e) {
return console.log("?? " + s.content.length + " " + (e.message || e));
}
var packets;
try {
packets = parse_iwa(o);
} catch (e) {
return console.log("## " + (e.message || e));
}
packets.forEach(function(packet) {
out[+packet.id] = packet.messages;
});
});
if (!out.length)
throw new Error("File has no messages");
var docroot;
out.forEach(function(iwams) {
iwams.forEach(function(iwam) {
var mtype = varint_to_i32(iwam.meta[1][0].data) >>> 0;
if (mtype == 1) {
if (!docroot)
docroot = iwam;
else
throw new Error("Document has multiple roots");
}
});
});
if (!docroot)
throw new Error("Cannot find Document root");
return parse_docroot(out, docroot);
}
var numbers_default = parse_numbers;
function parse_Reference(buf) {
var pb = parse_shallow(buf);
return parse_varint49(pb[1][0].data);
}
function parse_TST_TableDataList(M, root) {
var pb = parse_shallow(root.data);
var entries = pb[3];
var data = [];
entries == null ? void 0 : entries.forEach(function(entry) {
var le = parse_shallow(entry.data);
var key = varint_to_i32(le[1][0].data) >>> 0;
data[key] = u8str(le[3][0].data);
});
return data;
}
function parse_TST_TileRowInfo(u8) {
var pb = parse_shallow(u8);
var R = varint_to_i32(pb[1][0].data) >>> 0;
var storage = pb[3][0].data;
var offsets = u8_to_dataview(pb[4][0].data);
var cells = [];
for (var C = 0; C < offsets.byteLength / 2; ++C) {
var off = offsets.getUint16(C * 2, true);
if (off > storage.length)
continue;
cells[C] = storage.subarray(off, offsets.getUint16(C * 2 + 2, true));
}
return { R: R, cells: cells };
}
function parse_TST_Tile(M, root) {
var pb = parse_shallow(root.data);
var ri = mappa(pb[5], parse_TST_TileRowInfo);
return ri.reduce(function(acc, x) {
if (!acc[x.R])
acc[x.R] = [];
x.cells.forEach(function(cell, C) {
if (acc[x.R][C])
throw new Error("Duplicate cell r=".concat(x.R, " c=").concat(C));
acc[x.R][C] = cell;
});
return acc;
}, []);
}
function parse_TST_TableModelArchive(M, root, ws) {
var pb = parse_shallow(root.data);
var range = { s: { r: 0, c: 0 }, e: { r: 0, c: 0 } };
range.e.r = (varint_to_i32(pb[6][0].data) >>> 0) - 1;
if (range.e.r < 0)
throw new Error("Invalid row varint ".concat(pb[6][0].data));
range.e.c = (varint_to_i32(pb[7][0].data) >>> 0) - 1;
if (range.e.c < 0)
throw new Error("Invalid col varint ".concat(pb[7][0].data));
ws["!ref"] = encode_range(range);
{
var store = parse_shallow(pb[4][0].data);
var sst = parse_TST_TableDataList(M, M[parse_Reference(store[4][0].data)][0]);
{
var tile = parse_shallow(store[3][0].data);
var tiles = [];
tile[1].forEach(function(t) {
var tl = parse_shallow(t.data);
var ref = M[parse_Reference(tl[2][0].data)][0];
var mtype = varint_to_i32(ref.meta[1][0].data);
if (mtype != 6002)
throw new Error("6001 unexpected reference to ".concat(mtype));
tiles.push({ id: varint_to_i32(tl[1][0].data), ref: parse_TST_Tile(M, ref) });
});
tiles.forEach(function(tile2) {
tile2.ref.forEach(function(row, R) {
row.forEach(function(buf, C) {
var dv = u8_to_dataview(buf);
var ctype = buf[2];
var addr = encode_cell({ r: R, c: C });
switch (ctype) {
case 0:
{
switch (buf[1]) {
case 3:
ws[addr] = { t: "s", v: sst[dv.getUint32(buf.length - 4, true)] };
break;
case 2:
ws[addr] = { t: "n", v: dv.getFloat64(16, true) };
break;
case 0:
break;
case 5:
break;
case 7:
break;
case 6:
ws[addr] = { t: "b", v: dv.getFloat64(buf.length - 8, true) > 0 };
break;
default:
throw new Error("Unsupported cell type ".concat(buf.slice(0, 4)));
}
}
break;
case 3:
{
ws[addr] = { t: "s", v: sst[dv.getUint32(16, true)] };
}
break;
case 2:
{
ws[addr] = { t: "n", v: dv.getFloat64(buf.length - 12, true) };
}
break;
case 6:
{
ws[addr] = { t: "b", v: dv.getFloat64(16, true) > 0 };
}
break;
default:
throw new Error("Unsupported cell type ".concat(ctype));
}
});
});
});
}
}
}
function parse_TST_TableInfoArchive(M, root) {
var pb = parse_shallow(root.data);
var out = { "!ref": "A1" };
var tableref = M[parse_Reference(pb[2][0].data)];
var mtype = varint_to_i32(tableref[0].meta[1][0].data);
if (mtype != 6001)
throw new Error("6000 unexpected reference to ".concat(mtype));
parse_TST_TableModelArchive(M, tableref[0], out);
return out;
}
function parse_sheetroot(M, root) {
var _a;
var pb = parse_shallow(root.data);
var out = [{ "!ref": "A1" }, ((_a = pb[1]) == null ? void 0 : _a[0]) ? u8str(pb[1][0].data) : ""];
var shapeoffs = mappa(pb[2], parse_Reference);
var seen = false;
shapeoffs.forEach(function(off) {
M[off].forEach(function(m) {
var mtype = varint_to_i32(m.meta[1][0].data);
if (mtype == 6e3) {
if (seen)
return;
out[0] = parse_TST_TableInfoArchive(M, m);
seen = true;
}
});
});
return out;
}
function parse_docroot(M, root) {
var out = book_new();
var pb = parse_shallow(root.data);
var sheetoffs = mappa(pb[1], parse_Reference);
sheetoffs.forEach(function(off) {
M[off].forEach(function(m) {
var mtype = varint_to_i32(m.meta[1][0].data);
if (mtype == 2) {
var root2 = parse_sheetroot(M, m);
book_append_sheet(out, root2[0], root2[1]);
}
});
});
if (out.SheetNames.length == 0)
throw new Error("Empty NUMBERS file");
return out;
}
return __toCommonJS(numbers_exports);
})();
/*! sheetjs (C) 2013-present SheetJS -- http://sheetjs.com */

11
bits/85_parsezip.js
View File

@ -60,7 +60,16 @@ function parse_zip(zip/*:ZIP*/, opts/*:?ParseOpts*/)/*:Workbook*/ {
/* UOC */
if(safegetzipfile(zip, 'objectdata.xml')) return parse_ods(zip, opts);
/* Numbers */
if(safegetzipfile(zip, 'Index/Document.iwa')) throw new Error('Unsupported NUMBERS file');
if(safegetzipfile(zip, 'Index/Document.iwa')) {
if(typeof Uint8Array == "undefined") throw new Error('NUMBERS file parsing requires Uint8Array support')
if(typeof NUMBERS != "undefined") {
if(zip.FileIndex) return NUMBERS.parse_numbers(zip);
var _zip = CFB.utils.cfb_new();
zipentries(zip).forEach(function(e) { zip_add_file(_zip, e, getzipbin(zip, e)); });
return NUMBERS.parse_numbers(_zip);
}
throw new Error('Unsupported NUMBERS file');
}
if(!safegetzipfile(zip, '[Content_Types].xml')) {
if(safegetzipfile(zip, 'index.xml.gz')) throw new Error('Unsupported NUMBERS 08 file');
if(safegetzipfile(zip, 'index.xml')) throw new Error('Unsupported NUMBERS 09 file');

2
bits/99_footer.js
View File

@ -7,5 +7,3 @@ else if(typeof define === 'function' && define.amd) define('xlsx', function() {
else make_xlsx_lib(XLSX);
/* NOTE: the following extra line is needed for "Lightning Locker Service" */
if(typeof window !== 'undefined' && !window.XLSX) try { window.XLSX = XLSX; } catch(e) {}
/*exported XLS, ODS */
var XLS = XLSX, ODS = XLSX;

10
modules/.eslintrc Normal file
View File

@ -0,0 +1,10 @@
{
"parser": "@typescript-eslint/parser",
"env": { "shared-node-browser":true },
"plugins": ["@typescript-eslint"],
"extends": ["plugin:@typescript-eslint/recommended"],
"rules": {
"no-var": 0,
"semi": [ 2, "always" ]
}
}

2
modules/.gitignore vendored Normal file
View File

@ -0,0 +1,2 @@
test_files
numbers_to_csv.node.js

507
modules/83_numbers.js Normal file
View File

@ -0,0 +1,507 @@
var NUMBERS = (function() {
var __defProp = Object.defineProperty;
var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
var __getOwnPropNames = Object.getOwnPropertyNames;
var __hasOwnProp = Object.prototype.hasOwnProperty;
var __markAsModule = function(target) {
return __defProp(target, "__esModule", { value: true });
};
var __export = function(target, all) {
for (var name in all)
__defProp(target, name, { get: all[name], enumerable: true });
};
var __reExport = function(target, module, copyDefault, desc) {
if (module && typeof module === "object" || typeof module === "function")
for (var keys = __getOwnPropNames(module), i = 0, n = keys.length, key; i < n; i++) {
key = keys[i];
if (!__hasOwnProp.call(target, key) && (copyDefault || key !== "default"))
__defProp(target, key, { get: function(k) {
return module[k];
}.bind(null, key), enumerable: !(desc = __getOwnPropDesc(module, key)) || desc.enumerable });
}
return target;
};
var __toCommonJS = /* @__PURE__ */ function(cache) {
return function(module, temp) {
return cache && cache.get(module) || (temp = __reExport(__markAsModule({}), module, 1), cache && cache.set(module, temp), temp);
};
}(typeof WeakMap !== "undefined" ? /* @__PURE__ */ new WeakMap() : 0);
// 83_numbers.ts
var numbers_exports = {};
__export(numbers_exports, {
parse_numbers: function() {
return numbers_default;
}
});
// src/util.ts
var u8_to_dataview = function(array) {
return new DataView(array.buffer, array.byteOffset, array.byteLength);
};
var u8str = function(u8) {
return new TextDecoder().decode(u8);
};
var u8concat = function(u8a) {
var len = u8a.reduce(function(acc, x) {
return acc + x.length;
}, 0);
var out = new Uint8Array(len);
var off = 0;
u8a.forEach(function(u8) {
out.set(u8, off);
off += u8.length;
});
return out;
};
// src/proto.ts
function parse_varint49(buf, ptr) {
var l = ptr ? ptr[0] : 0;
var usz = buf[l] & 127;
varint:
if (buf[l++] >= 128) {
usz |= (buf[l] & 127) << 7;
if (buf[l++] < 128)
break varint;
usz |= (buf[l] & 127) << 14;
if (buf[l++] < 128)
break varint;
usz |= (buf[l] & 127) << 21;
if (buf[l++] < 128)
break varint;
usz += (buf[l] & 127) * Math.pow(2, 28);
++l;
if (buf[l++] < 128)
break varint;
usz += (buf[l] & 127) * Math.pow(2, 35);
++l;
if (buf[l++] < 128)
break varint;
usz += (buf[l] & 127) * Math.pow(2, 42);
++l;
if (buf[l++] < 128)
break varint;
}
if (ptr)
ptr[0] = l;
return usz;
}
function varint_to_i32(buf) {
var l = 0, i32 = buf[l] & 127;
varint:
if (buf[l++] >= 128) {
i32 |= (buf[l] & 127) << 7;
if (buf[l++] < 128)
break varint;
i32 |= (buf[l] & 127) << 14;
if (buf[l++] < 128)
break varint;
i32 |= (buf[l] & 127) << 21;
if (buf[l++] < 128)
break varint;
i32 |= (buf[l] & 127) << 28;
}
return i32;
}
function parse_shallow(buf) {
var out = [], ptr = [0];
while (ptr[0] < buf.length) {
var off = ptr[0];
var num = parse_varint49(buf, ptr);
var type = num & 7;
num = Math.floor(num / 8);
var len = 0;
var res;
if (num == 0)
break;
switch (type) {
case 0:
{
var l = ptr[0];
while (buf[ptr[0]++] >= 128)
;
res = buf.slice(l, ptr[0]);
}
break;
case 5:
len = 4;
case 1:
if (!len)
len = 8;
case 2:
if (!len)
len = parse_varint49(buf, ptr);
res = buf.slice(ptr[0], ptr[0] + len);
ptr[0] += len;
break;
case 3:
case 4:
default:
throw new Error("PB Type ".concat(type, " for Field ").concat(num, " at offset ").concat(off));
}
var v = { offset: off, data: res };
if (out[num] == null)
out[num] = [v];
else
out[num].push(v);
}
return out;
}
function mappa(data, cb) {
if (!data)
return [];
return data.map(function(d) {
var _a;
try {
return cb(d.data);
} catch (e) {
var m = (_a = e.message) == null ? void 0 : _a.match(/at offset (\d+)/);
if (m)
e.message = e.message.replace(/at offset (\d+)/, "at offset " + (+m[1] + d.offset));
throw e;
}
});
}
// src/frame.ts
function deframe(buf) {
var out = [];
var l = 0;
while (l < buf.length) {
var t = buf[l++];
var len = buf[l] | buf[l + 1] << 8 | buf[l + 2] << 16;
l += 3;
out.push(process_chunk(t, buf.slice(l, l + len)));
l += len;
}
if (l !== buf.length)
throw new Error("data is not a valid framed stream!");
return u8concat(out);
}
function process_chunk(type, buf) {
if (type != 0)
throw new Error("Unexpected Snappy chunk type ".concat(type));
var ptr = [0];
var usz = parse_varint49(buf, ptr);
var chunks = [];
while (ptr[0] < buf.length) {
var tag = buf[ptr[0]] & 3;
if (tag == 0) {
var len = buf[ptr[0]++] >> 2;
if (len < 60)
++len;
else {
var c = len - 59;
len = buf[ptr[0]];
if (c > 1)
len |= buf[ptr[0] + 1] << 8;
if (c > 2)
len |= buf[ptr[0] + 2] << 16;
if (c > 3)
len |= buf[ptr[0] + 3] << 24;
len >>>= 0;
len++;
ptr[0] += c;
}
chunks.push(buf.slice(ptr[0], ptr[0] + len));
ptr[0] += len;
continue;
} else {
var offset = 0, length = 0;
if (tag == 1) {
length = (buf[ptr[0]] >> 2 & 7) + 4;
offset = (buf[ptr[0]++] & 224) << 3;
offset |= buf[ptr[0]++];
} else {
length = (buf[ptr[0]++] >> 2) + 1;
if (tag == 2) {
offset = buf[ptr[0]] | buf[ptr[0] + 1] << 8;
ptr[0] += 2;
} else {
offset = (buf[ptr[0]] | buf[ptr[0] + 1] << 8 | buf[ptr[0] + 2] << 16 | buf[ptr[0] + 3] << 24) >>> 0;
ptr[0] += 4;
}
}
chunks = [u8concat(chunks)];
if (offset == 0)
throw new Error("Invalid offset 0");
if (offset > chunks[0].length)
throw new Error("Invalid offset beyond length");
if (length >= offset) {
chunks.push(chunks[0].slice(-offset));
length -= offset;
while (length >= chunks[chunks.length - 1].length) {
chunks.push(chunks[chunks.length - 1]);
length -= chunks[chunks.length - 1].length;
}
}
chunks.push(chunks[0].slice(-offset, -offset + length));
}
}
var o = u8concat(chunks);
if (o.length != usz)
throw new Error("Unexpected length: ".concat(o.length, " != ").concat(usz));
return o;
}
// src/iwa.ts
function parse_iwa(buf) {
var out = [], ptr = [0];
while (ptr[0] < buf.length) {
var len = parse_varint49(buf, ptr);
var ai = parse_shallow(buf.slice(ptr[0], ptr[0] + len));
ptr[0] += len;
var res = {
id: varint_to_i32(ai[1][0].data),
messages: []
};
ai[2].forEach(function(b) {
var mi = parse_shallow(b.data);
var fl = varint_to_i32(mi[3][0].data);
res.messages.push({
meta: mi,
data: buf.slice(ptr[0], ptr[0] + fl)
});
ptr[0] += fl;
});
out.push(res);
}
return out;
}
// src/numbers.ts
var encode_col = function(C) {
var s = "";
for (++C; C; C = Math.floor((C - 1) / 26))
s = String.fromCharCode((C - 1) % 26 + 65) + s;
return s;
};
var encode_cell = function(c) {
return "".concat(encode_col(c.c)).concat(c.r + 1);
};
var encode_range = function(r) {
return encode_cell(r.s) + ":" + encode_cell(r.e);
};
var book_new = function() {
return { Sheets: {}, SheetNames: [] };
};
var book_append_sheet = function(wb, ws, name) {
if (!name) {
for (var i = 1; i < 9999; ++i)
if (wb.SheetNames.indexOf(name = "Sheet ".concat(i)) == -1)
break;
}
wb.SheetNames.push(name);
wb.Sheets[name] = ws;
};
function parse_numbers(cfb) {
var out = [];
cfb.FileIndex.forEach(function(s) {
if (!s.name.match(/\.iwa$/))
return;
var o;
try {
o = deframe(s.content);
} catch (e) {
return console.log("?? " + s.content.length + " " + (e.message || e));
}
var packets;
try {
packets = parse_iwa(o);
} catch (e) {
return console.log("## " + (e.message || e));
}
packets.forEach(function(packet) {
out[+packet.id] = packet.messages;
});
});
if (!out.length)
throw new Error("File has no messages");
var docroot;
out.forEach(function(iwams) {
iwams.forEach(function(iwam) {
var mtype = varint_to_i32(iwam.meta[1][0].data) >>> 0;
if (mtype == 1) {
if (!docroot)
docroot = iwam;
else
throw new Error("Document has multiple roots");
}
});
});
if (!docroot)
throw new Error("Cannot find Document root");
return parse_docroot(out, docroot);
}
var numbers_default = parse_numbers;
function parse_Reference(buf) {
var pb = parse_shallow(buf);
return parse_varint49(pb[1][0].data);
}
function parse_TST_TableDataList(M, root) {
var pb = parse_shallow(root.data);
var entries = pb[3];
var data = [];
entries == null ? void 0 : entries.forEach(function(entry) {
var le = parse_shallow(entry.data);
var key = varint_to_i32(le[1][0].data) >>> 0;
data[key] = u8str(le[3][0].data);
});
return data;
}
function parse_TST_TileRowInfo(u8) {
var pb = parse_shallow(u8);
var R = varint_to_i32(pb[1][0].data) >>> 0;
var storage = pb[3][0].data;
var offsets = u8_to_dataview(pb[4][0].data);
var cells = [];
for (var C = 0; C < offsets.byteLength / 2; ++C) {
var off = offsets.getUint16(C * 2, true);
if (off > storage.length)
continue;
cells[C] = storage.subarray(off, offsets.getUint16(C * 2 + 2, true));
}
return { R: R, cells: cells };
}
function parse_TST_Tile(M, root) {
var pb = parse_shallow(root.data);
var ri = mappa(pb[5], parse_TST_TileRowInfo);
return ri.reduce(function(acc, x) {
if (!acc[x.R])
acc[x.R] = [];
x.cells.forEach(function(cell, C) {
if (acc[x.R][C])
throw new Error("Duplicate cell r=".concat(x.R, " c=").concat(C));
acc[x.R][C] = cell;
});
return acc;
}, []);
}
function parse_TST_TableModelArchive(M, root, ws) {
var pb = parse_shallow(root.data);
var range = { s: { r: 0, c: 0 }, e: { r: 0, c: 0 } };
range.e.r = (varint_to_i32(pb[6][0].data) >>> 0) - 1;
if (range.e.r < 0)
throw new Error("Invalid row varint ".concat(pb[6][0].data));
range.e.c = (varint_to_i32(pb[7][0].data) >>> 0) - 1;
if (range.e.c < 0)
throw new Error("Invalid col varint ".concat(pb[7][0].data));
ws["!ref"] = encode_range(range);
{
var store = parse_shallow(pb[4][0].data);
var sst = parse_TST_TableDataList(M, M[parse_Reference(store[4][0].data)][0]);
{
var tile = parse_shallow(store[3][0].data);
var tiles = [];
tile[1].forEach(function(t) {
var tl = parse_shallow(t.data);
var ref = M[parse_Reference(tl[2][0].data)][0];
var mtype = varint_to_i32(ref.meta[1][0].data);
if (mtype != 6002)
throw new Error("6001 unexpected reference to ".concat(mtype));
tiles.push({ id: varint_to_i32(tl[1][0].data), ref: parse_TST_Tile(M, ref) });
});
tiles.forEach(function(tile2) {
tile2.ref.forEach(function(row, R) {
row.forEach(function(buf, C) {
var dv = u8_to_dataview(buf);
var ctype = buf[2];
var addr = encode_cell({ r: R, c: C });
switch (ctype) {
case 0:
{
switch (buf[1]) {
case 3:
ws[addr] = { t: "s", v: sst[dv.getUint32(buf.length - 4, true)] };
break;
case 2:
ws[addr] = { t: "n", v: dv.getFloat64(16, true) };
break;
case 0:
break;
case 5:
break;
case 7:
break;
case 6:
ws[addr] = { t: "b", v: dv.getFloat64(buf.length - 8, true) > 0 };
break;
default:
throw new Error("Unsupported cell type ".concat(buf.slice(0, 4)));
}
}
break;
case 3:
{
ws[addr] = { t: "s", v: sst[dv.getUint32(16, true)] };
}
break;
case 2:
{
ws[addr] = { t: "n", v: dv.getFloat64(buf.length - 12, true) };
}
break;
case 6:
{
ws[addr] = { t: "b", v: dv.getFloat64(16, true) > 0 };
}
break;
default:
throw new Error("Unsupported cell type ".concat(ctype));
}
});
});
});
}
}
}
function parse_TST_TableInfoArchive(M, root) {
var pb = parse_shallow(root.data);
var out = { "!ref": "A1" };
var tableref = M[parse_Reference(pb[2][0].data)];
var mtype = varint_to_i32(tableref[0].meta[1][0].data);
if (mtype != 6001)
throw new Error("6000 unexpected reference to ".concat(mtype));
parse_TST_TableModelArchive(M, tableref[0], out);
return out;
}
function parse_sheetroot(M, root) {
var _a;
var pb = parse_shallow(root.data);
var out = [{ "!ref": "A1" }, ((_a = pb[1]) == null ? void 0 : _a[0]) ? u8str(pb[1][0].data) : ""];
var shapeoffs = mappa(pb[2], parse_Reference);
var seen = false;
shapeoffs.forEach(function(off) {
M[off].forEach(function(m) {
var mtype = varint_to_i32(m.meta[1][0].data);
if (mtype == 6e3) {
if (seen)
return;
out[0] = parse_TST_TableInfoArchive(M, m);
seen = true;
}
});
});
return out;
}
function parse_docroot(M, root) {
var out = book_new();
var pb = parse_shallow(root.data);
var sheetoffs = mappa(pb[1], parse_Reference);
sheetoffs.forEach(function(off) {
M[off].forEach(function(m) {
var mtype = varint_to_i32(m.meta[1][0].data);
if (mtype == 2) {
var root2 = parse_sheetroot(M, m);
book_append_sheet(out, root2[0], root2[1]);
}
});
});
if (out.SheetNames.length == 0)
throw new Error("Empty NUMBERS file");
return out;
}
return __toCommonJS(numbers_exports);
})();
/*! sheetjs (C) 2013-present SheetJS -- http://sheetjs.com */

4
modules/83_numbers.ts Normal file
View File

@ -0,0 +1,4 @@
/*! sheetjs (C) 2013-present SheetJS -- http://sheetjs.com */
import parse_numbers from './src/numbers';
export { parse_numbers };

20
modules/Makefile Normal file
View File

@ -0,0 +1,20 @@
LIBFILES=$(wildcard src/*.ts)
TSFILES=$(wildcard *.ts)
ENTRIES=$(subst .ts,.js,$(TSFILES))
.PHONY: all
all: $(ENTRIES)
83_numbers.js: 83_numbers.ts $(LIBFILES)
npx esbuild $< --bundle --outfile=$@ --platform=browser --format=iife --global-name=NUMBERS --target=es5
%.node.js: %.node.ts $(LIBFILES)
npx esbuild $< --bundle --external:xlsx --outfile=$@ --minify --platform=node
sed -i '' 's/ts-node/node/g' $@
%.js: %.ts $(LIBFILES)
npx esbuild $< --bundle --outfile=$@ --platform=browser --format=iife --global-name=$* --target=es5
.PHONY: clean
clean:
rm $(ENTRIES)

13
modules/numbers_to_csv.node.ts Normal file
View File

@ -0,0 +1,13 @@
#!/usr/bin/env ts-node
/*! sheetjs (C) 2013-present SheetJS -- http://sheetjs.com */
import { read } from 'cfb';
import { utils } from 'xlsx';
import parse_numbers from './src/numbers';
var f = process.argv[2];
var cfb = read(f, {type: "file"});
var wb = parse_numbers(cfb);
var sn = process.argv[3];
if(sn && !isNaN(+sn)) sn = wb.SheetNames[+sn];
if(wb.SheetNames.indexOf(sn) == -1) sn = wb.SheetNames[0];
console.log(utils.sheet_to_csv(wb.Sheets[sn]));

5
modules/package.json Normal file
View File

@ -0,0 +1,5 @@
{
"devDependencies": {
"esbuild": "0.14.14"
}
}

78
modules/src/frame.ts Normal file
View File

@ -0,0 +1,78 @@
/*! sheetjs (C) 2013-present SheetJS -- http://sheetjs.com */
import { Ptr, parse_varint49 } from './proto';
import { u8concat } from './util';
function is_framed(buf: Uint8Array): boolean {
var l = 0;
while(l < buf.length) {
l++;
var len = buf[l] | (buf[l+1]<<8) | (buf[l+2] << 16); l += 3;
l += len;
}
return l == buf.length;
}
export { is_framed };
function deframe(buf: Uint8Array): Uint8Array {
var out = [];
var l = 0;
while(l < buf.length) {
var t = buf[l++];
var len = buf[l] | (buf[l+1]<<8) | (buf[l+2] << 16); l += 3;
out.push(process_chunk(t, buf.slice(l, l + len)));
l += len;
}
if(l !== buf.length) throw new Error("data is not a valid framed stream!");
return u8concat(out);
}
export { deframe };
function process_chunk(type: number, buf: Uint8Array): Uint8Array {
if(type != 0) throw new Error(`Unexpected Snappy chunk type ${type}`);
var ptr: Ptr = [0];
var usz = parse_varint49(buf, ptr);
var chunks = [];
while(ptr[0] < buf.length) {
var tag = buf[ptr[0]] & 0x3;
if(tag == 0) {
var len = buf[ptr[0]++] >> 2;
if(len < 60) ++len;
else {
var c = len - 59;
len = buf[ptr[0]];
if(c > 1) len |= (buf[ptr[0]+1]<<8);
if(c > 2) len |= (buf[ptr[0]+2]<<16);
if(c > 3) len |= (buf[ptr[0]+3]<<24);
len >>>=0; len++;
ptr[0] += c;
}
chunks.push(buf.slice(ptr[0], ptr[0] + len)); ptr[0] += len; continue;
} else {
var offset = 0, length = 0;
if(tag == 1) {
length = ((buf[ptr[0]] >> 2) & 0x7) + 4;
offset = (buf[ptr[0]++] & 0xE0) << 3;
offset |= buf[ptr[0]++];
} else {
length = (buf[ptr[0]++] >> 2) + 1;
if(tag == 2) { offset = buf[ptr[0]] | (buf[ptr[0]+1]<<8); ptr[0] += 2; }
else { offset = (buf[ptr[0]] | (buf[ptr[0]+1]<<8) | (buf[ptr[0]+2]<<16) | (buf[ptr[0]+3]<<24))>>>0; ptr[0] += 4; }
}
chunks = [u8concat(chunks)];
if(offset == 0) throw new Error("Invalid offset 0");
if(offset > chunks[0].length) throw new Error("Invalid offset beyond length");
if(length >= offset) {
chunks.push(chunks[0].slice(-offset)); length -= offset;
while(length >= chunks[chunks.length-1].length) {
chunks.push(chunks[chunks.length - 1]);
length -= chunks[chunks.length - 1].length;
}
}
chunks.push(chunks[0].slice(-offset, -offset + length));
}
}
var o = u8concat(chunks);
if(o.length != usz) throw new Error(`Unexpected length: ${o.length} != ${usz}`);
return o;
}

40
modules/src/iwa.ts Normal file
View File

@ -0,0 +1,40 @@
/*! sheetjs (C) 2013-present SheetJS -- http://sheetjs.com */
import { Ptr, ProtoMessage, parse_shallow, parse_varint49, varint_to_i32 } from './proto';
interface IWAMessage {
/** Metadata in .TSP.MessageInfo */
meta: ProtoMessage;
data: Uint8Array;
}
interface IWAArchiveInfo {
id?: number;
messages?: IWAMessage[];
}
export { IWAMessage, IWAArchiveInfo };
function parse_iwa(buf: Uint8Array): IWAArchiveInfo[] {
var out: IWAArchiveInfo[] = [], ptr: Ptr = [0];
while(ptr[0] < buf.length) {
/* .TSP.ArchiveInfo */
var len = parse_varint49(buf, ptr);
var ai = parse_shallow(buf.slice(ptr[0], ptr[0] + len));
ptr[0] += len;
var res: IWAArchiveInfo = {
id: varint_to_i32(ai[1][0].data),
messages: []
};
ai[2].forEach(b => {
var mi = parse_shallow(b.data);
var fl = varint_to_i32(mi[3][0].data);
res.messages.push({
meta: mi,
data: buf.slice(ptr[0], ptr[0] + fl)
});
ptr[0] += fl;
});
out.push(res);
}
return out;
}
export { parse_iwa };

213
modules/src/numbers.ts Normal file
View File

@ -0,0 +1,213 @@
/*! sheetjs (C) 2013-present SheetJS -- http://sheetjs.com */
import { CFB$Container } from 'cfb';
import { WorkBook, WorkSheet, CellAddress, Range, CellObject } from '../../';
import { u8str, u8_to_dataview } from './util';
import { parse_shallow, varint_to_i32, parse_varint49, mappa } from './proto';
import { deframe } from './frame';
import { IWAArchiveInfo, IWAMessage, parse_iwa } from './iwa';
/* written here to avoid a full import of the 'xlsx' library */
var encode_col = (C: number): string => {
var s="";
for(++C; C; C=Math.floor((C-1)/26)) s = String.fromCharCode(((C-1)%26) + 65) + s;
return s;
};
var encode_cell = (c: CellAddress): string => `${encode_col(c.c)}${c.r+1}`;
var encode_range = (r: Range): string => encode_cell(r.s) + ":" + encode_cell(r.e);
var book_new = (): WorkBook => ({Sheets:{}, SheetNames:[]});
var book_append_sheet = (wb: WorkBook, ws: WorkSheet, name?: string): void => {
if(!name) for(var i = 1; i < 9999; ++i) if(wb.SheetNames.indexOf(name = `Sheet ${i}`) == -1) break;
wb.SheetNames.push(name); wb.Sheets[name] = ws;
};
function parse_numbers(cfb: CFB$Container): WorkBook {
var out: IWAMessage[][] = [];
/* collect entire message space */
cfb.FileIndex.forEach(s => {
if(!s.name.match(/\.iwa$/)) return;
var o: Uint8Array;
try { o = deframe(s.content as Uint8Array); } catch(e) { return console.log("?? " + s.content.length + " " + (e.message || e)); }
var packets: IWAArchiveInfo[];
try { packets = parse_iwa(o); } catch(e) { return console.log("## " + (e.message || e)); }
packets.forEach(packet => {out[+packet.id] = packet.messages;});
});
if(!out.length) throw new Error("File has no messages");
/* find document root */
var docroot: IWAMessage;
out.forEach((iwams) => {
iwams.forEach((iwam) => {
var mtype = varint_to_i32(iwam.meta[1][0].data) >>> 0;
if(mtype == 1) {
if(!docroot) docroot = iwam;
else throw new Error("Document has multiple roots");
}
});
});
if(!docroot) throw new Error("Cannot find Document root");
return parse_docroot(out, docroot);
}
export default parse_numbers;
// .TSP.Reference
function parse_Reference(buf: Uint8Array): number {
var pb = parse_shallow(buf);
return parse_varint49(pb[1][0].data);
}
// .TST.TableDataList
function parse_TST_TableDataList(M: IWAMessage[][], root: IWAMessage): string[] {
var pb = parse_shallow(root.data);
var entries = pb[3];
var data = [];
entries?.forEach(entry => {
var le = parse_shallow(entry.data);
var key = varint_to_i32(le[1][0].data)>>>0;
data[key] = u8str(le[3][0].data);
});
return data;
}
interface TileRowInfo {
R: number;
cells?: Uint8Array[];
}
// .TSP.TileRowInfo
function parse_TST_TileRowInfo(u8: Uint8Array): TileRowInfo {
var pb = parse_shallow(u8);
var R = varint_to_i32(pb[1][0].data) >>> 0;
var storage = pb[3][0].data;
var offsets = u8_to_dataview(pb[4][0].data);
var cells = [];
for(var C = 0; C < offsets.byteLength/2; ++C) {
var off = offsets.getUint16(C*2, true);
if(off > storage.length) continue;
cells[C] = storage.subarray(off, offsets.getUint16(C*2+2, true));
}
return { R, cells };
}
// .TST.Tile
function parse_TST_Tile(M: IWAMessage[][], root: IWAMessage): Uint8Array[][] {
var pb = parse_shallow(root.data);
var ri = mappa(pb[5], parse_TST_TileRowInfo);
return ri.reduce((acc, x) => {
if(!acc[x.R]) acc[x.R] = [];
x.cells.forEach((cell, C) => {
if(acc[x.R][C]) throw new Error(`Duplicate cell r=${x.R} c=${C}`);
acc[x.R][C] = cell;
});
return acc;
}, [] as Uint8Array[][]);
}
// .TST.TableModelArchive
function parse_TST_TableModelArchive(M: IWAMessage[][], root: IWAMessage, ws: WorkSheet) {
var pb = parse_shallow(root.data);
var range: Range = { s: {r:0, c:0}, e: {r:0, c:0} };
range.e.r = (varint_to_i32(pb[6][0].data) >>> 0) - 1;
if(range.e.r < 0) throw new Error(`Invalid row varint ${pb[6][0].data}`);
range.e.c = (varint_to_i32(pb[7][0].data) >>> 0) - 1;
if(range.e.c < 0) throw new Error(`Invalid col varint ${pb[7][0].data}`);
ws["!ref"] = encode_range(range);
{
// .TST.DataStore
var store = parse_shallow(pb[4][0].data);
var sst = parse_TST_TableDataList(M, M[parse_Reference(store[4][0].data)][0]);
{
// .TST.TileStorage
var tile = parse_shallow(store[3][0].data);
var tiles: Array<{id: number, ref: Uint8Array[][]}> = [];
tile[1].forEach(t => {
var tl = (parse_shallow(t.data));
var ref = M[parse_Reference(tl[2][0].data)][0];
var mtype = varint_to_i32(ref.meta[1][0].data);
if(mtype != 6002) throw new Error(`6001 unexpected reference to ${mtype}`);
tiles.push({id: varint_to_i32(tl[1][0].data), ref: parse_TST_Tile(M, ref) });
});
tiles.forEach((tile) => {
tile.ref.forEach((row, R) => {
row.forEach((buf, C) => {
var dv = u8_to_dataview(buf);
//var version = buf[0]; // numbers 3.x use "3", 6.x - 11.x use "4"
/* TODO: find the correct field position of the data type and value. */
var ctype = buf[2];
var addr = encode_cell({r:R,c:C});
switch(ctype) {
case 0: { // TODO: generic ??
switch(buf[1]) {
case 3: ws[addr] = { t: "s", v: sst[dv.getUint32(buf.length - 4,true)] } as CellObject; break;
case 2: ws[addr] = { t: "n", v: dv.getFloat64(16, true) } as CellObject; break;
case 0: break; // ws[addr] = { t: "z" } as CellObject; // blank?
case 5: break; // date-time
case 7: break; // duration
case 6: ws[addr] = { t: "b", v: dv.getFloat64(buf.length - 8, true) > 0 } as CellObject; break;
default: throw new Error(`Unsupported cell type ${buf.slice(0,4)}`);
}
} break;
case 3: { // string
ws[addr] = { t: "s", v: sst[dv.getUint32(16,true)] } as CellObject;
} break;
case 2: { // number
ws[addr] = { t: "n", v: dv.getFloat64(buf.length - 12, true) } as CellObject;
} break;
case 6: { // boolean
ws[addr] = { t: "b", v: dv.getFloat64(16, true) > 0 } as CellObject; // 1 or 0
} break;
default: throw new Error(`Unsupported cell type ${ctype}`);
}
});
});
});
}
}
}
// .TST.TableInfoArchive
function parse_TST_TableInfoArchive(M: IWAMessage[][], root: IWAMessage): WorkSheet {
var pb = parse_shallow(root.data);
var out: WorkSheet = { "!ref": "A1" };
var tableref = M[parse_Reference(pb[2][0].data)];
var mtype = varint_to_i32(tableref[0].meta[1][0].data);
if(mtype != 6001) throw new Error(`6000 unexpected reference to ${mtype}`);
parse_TST_TableModelArchive(M, tableref[0], out);
return out;
}
// .TN.SheetArchive
function parse_sheetroot(M: IWAMessage[][], root: IWAMessage): [WorkSheet, string] {
var pb = parse_shallow(root.data);
var out: [WorkSheet, string] = [ { "!ref":"A1" }, (pb[1]?.[0] ? u8str(pb[1][0].data) : "") ];
var shapeoffs = mappa(pb[2], parse_Reference);
var seen = false;
shapeoffs.forEach((off) => {
M[off].forEach((m: IWAMessage) => {
var mtype = varint_to_i32(m.meta[1][0].data);
if(mtype == 6000) {
if(seen) return; // TODO: multiple Tables in a sheet
out[0] = parse_TST_TableInfoArchive(M, m);
seen = true;
}
});
});
return out;
}
// .TN.DocumentArchive
function parse_docroot(M: IWAMessage[][], root: IWAMessage): WorkBook {
var out = book_new();
var pb = parse_shallow(root.data);
var sheetoffs = mappa(pb[1], parse_Reference);
sheetoffs.forEach((off) => {
M[off].forEach((m: IWAMessage) => {
var mtype = varint_to_i32(m.meta[1][0].data);
if(mtype == 2) {
var root = parse_sheetroot(M, m);
book_append_sheet(out, root[0], root[1]);
}
});
});
if(out.SheetNames.length == 0) throw new Error("Empty NUMBERS file");
return out;
}

86
modules/src/proto.ts Normal file
View File

@ -0,0 +1,86 @@
/*! sheetjs (C) 2013-present SheetJS -- http://sheetjs.com */
type Ptr = [number];
export { Ptr };
/** Parse an integer from the varint that can be exactly stored in a double */
function parse_varint49(buf: Uint8Array, ptr?: Ptr): number {
var l = ptr ? ptr[0] : 0;
var usz = buf[l] & 0x7F;
varint: if(buf[l++] >= 0x80) {
usz |= (buf[l] & 0x7F) << 7; if(buf[l++] < 0x80) break varint;
usz |= (buf[l] & 0x7F) << 14; if(buf[l++] < 0x80) break varint;
usz |= (buf[l] & 0x7F) << 21; if(buf[l++] < 0x80) break varint;
usz += (buf[l] & 0x7F) * Math.pow(2, 28); ++l; if(buf[l++] < 0x80) break varint;
usz += (buf[l] & 0x7F) * Math.pow(2, 35); ++l; if(buf[l++] < 0x80) break varint;
usz += (buf[l] & 0x7F) * Math.pow(2, 42); ++l; if(buf[l++] < 0x80) break varint;
}
if(ptr) ptr[0] = l;
return usz;
}
export { parse_varint49 };
/** Parse a 32-bit signed integer from the raw varint */
function varint_to_i32(buf: Uint8Array): number {
var l = 0, i32 = buf[l] & 0x7F;
varint: if(buf[l++] >= 0x80) {
i32 |= (buf[l] & 0x7F) << 7; if(buf[l++] < 0x80) break varint;
i32 |= (buf[l] & 0x7F) << 14; if(buf[l++] < 0x80) break varint;
i32 |= (buf[l] & 0x7F) << 21; if(buf[l++] < 0x80) break varint;
i32 |= (buf[l] & 0x7F) << 28;
}
return i32;
}
export { varint_to_i32 };
interface ProtoItem {
offset: number;
data: Uint8Array;
}
type ProtoField = Array<ProtoItem>
type ProtoMessage = Array<ProtoField>;
export { ProtoItem, ProtoField, ProtoMessage }
/** Shallow parse of a message */
function parse_shallow(buf: Uint8Array): ProtoMessage {
var out: ProtoMessage = [], ptr: Ptr = [0];
while(ptr[0] < buf.length) {
var off = ptr[0];
var num = parse_varint49(buf, ptr);
var type = num & 0x07; num = Math.floor(num / 8);
var len = 0;
var res: Uint8Array;
if(num == 0) break;
switch(type) {
case 0: {
var l = ptr[0];
while(buf[ptr[0]++] >= 0x80);
res = buf.slice(l, ptr[0]);
} break;
case 5: len = 4;
/* falls through */
case 1: if(!len) len = 8;
/* falls through */
case 2: if(!len) len = parse_varint49(buf, ptr);
res = buf.slice(ptr[0], ptr[0] + len); ptr[0] += len; break;
case 3: // Start group
case 4: // End group
default: throw new Error(`PB Type ${type} for Field ${num} at offset ${off}`);
}
var v: ProtoItem = { offset: off, data: res };
if(out[num] == null) out[num] = [v];
else out[num].push(v);
}
return out;
}
export { parse_shallow };
function mappa<U>(data: ProtoField, cb:(Uint8Array) => U): U[] {
if(!data) return [];
return data.map((d) => { try {
return cb(d.data);
} catch(e) {
var m = e.message?.match(/at offset (\d+)/);
if(m) e.message = e.message.replace(/at offset (\d+)/, "at offset " + (+m[1] + d.offset));
throw e;
}});
}
export { mappa };

39
modules/src/util.ts Normal file
View File

@ -0,0 +1,39 @@
/*! sheetjs (C) 2013-present SheetJS -- http://sheetjs.com */
var u8_to_dataview = (array: Uint8Array): DataView => new DataView(array.buffer, array.byteOffset, array.byteLength);
export { u8_to_dataview };
var u8str = (u8: Uint8Array): string => /* Buffer.isBuffer(u8) ? u8.toString() :*/ new TextDecoder().decode(u8);
export { u8str };
var u8concat = (u8a: Uint8Array[]): Uint8Array => {
var len = u8a.reduce((acc: number, x: Uint8Array) => acc + x.length, 0);
var out = new Uint8Array(len);
var off = 0;
u8a.forEach(u8 => { out.set(u8, off); off += u8.length; });
return out;
};
export { u8concat };
var indent = (str: string, depth: number /* = 1 */): string => str.split(/\n/g).map(x => x && " ".repeat(depth) + x).join("\n");
export { indent };
function u8indexOf(u8: Uint8Array, data: string | number | Uint8Array, byteOffset?: number): number {
//if(Buffer.isBuffer(u8)) return u8.indexOf(data, byteOffset);
if(typeof data == "number") return u8.indexOf(data, byteOffset);
var l = byteOffset;
if(typeof data == "string") {
outs: while((l = u8.indexOf(data.charCodeAt(0), l)) > -1) {
++l;
for(var j = 1; j < data.length; ++j) if(u8[l+j-1] != data.charCodeAt(j)) continue outs;
return l - 1;
}
} else {
outb: while((l = u8.indexOf(data[0], l)) > -1) {
++l;
for(var j = 1; j < data.length; ++j) if(u8[l+j-1] != data[j]) continue outb;
return l - 1;
}
}
return -1;
}
export { u8indexOf };

10
packages/otorp/.eslintrc Normal file
View File

@ -0,0 +1,10 @@
{
"parser": "@typescript-eslint/parser",
"env": { "shared-node-browser":true },
"plugins": ["@typescript-eslint"],
"extends": ["plugin:@typescript-eslint/recommended"],
"rules": {
"no-var": 0,
"semi": [ 2, "always" ]
}
}

201
packages/otorp/LICENSE Normal file
View File

@ -0,0 +1,201 @@
Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
1. Definitions.
"License" shall mean the terms and conditions for use, reproduction,
and distribution as defined by Sections 1 through 9 of this document.
"Licensor" shall mean the copyright owner or entity authorized by
the copyright owner that is granting the License.
"Legal Entity" shall mean the union of the acting entity and all
other entities that control, are controlled by, or are under common
control with that entity. For the purposes of this definition,
"control" means (i) the power, direct or indirect, to cause the
direction or management of such entity, whether by contract or
otherwise, or (ii) ownership of fifty percent (50%) or more of the
outstanding shares, or (iii) beneficial ownership of such entity.
"You" (or "Your") shall mean an individual or Legal Entity
exercising permissions granted by this License.
"Source" form shall mean the preferred form for making modifications,
including but not limited to software source code, documentation
source, and configuration files.
"Object" form shall mean any form resulting from mechanical
transformation or translation of a Source form, including but
not limited to compiled object code, generated documentation,
and conversions to other media types.
"Work" shall mean the work of authorship, whether in Source or
Object form, made available under the License, as indicated by a
copyright notice that is included in or attached to the work
(an example is provided in the Appendix below).
"Derivative Works" shall mean any work, whether in Source or Object
form, that is based on (or derived from) the Work and for which the
editorial revisions, annotations, elaborations, or other modifications
represent, as a whole, an original work of authorship. For the purposes
of this License, Derivative Works shall not include works that remain
separable from, or merely link (or bind by name) to the interfaces of,
the Work and Derivative Works thereof.
"Contribution" shall mean any work of authorship, including
the original version of the Work and any modifications or additions
to that Work or Derivative Works thereof, that is intentionally
submitted to Licensor for inclusion in the Work by the copyright owner
or by an individual or Legal Entity authorized to submit on behalf of
the copyright owner. For the purposes of this definition, "submitted"
means any form of electronic, verbal, or written communication sent
to the Licensor or its representatives, including but not limited to
communication on electronic mailing lists, source code control systems,
and issue tracking systems that are managed by, or on behalf of, the
Licensor for the purpose of discussing and improving the Work, but
excluding communication that is conspicuously marked or otherwise
designated in writing by the copyright owner as "Not a Contribution."
"Contributor" shall mean Licensor and any individual or Legal Entity
on behalf of whom a Contribution has been received by Licensor and
subsequently incorporated within the Work.
2. Grant of Copyright License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
copyright license to reproduce, prepare Derivative Works of,
publicly display, publicly perform, sublicense, and distribute the
Work and such Derivative Works in Source or Object form.
3. Grant of Patent License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
(except as stated in this section) patent license to make, have made,
use, offer to sell, sell, import, and otherwise transfer the Work,
where such license applies only to those patent claims licensable
by such Contributor that are necessarily infringed by their
Contribution(s) alone or by combination of their Contribution(s)
with the Work to which such Contribution(s) was submitted. If You
institute patent litigation against any entity (including a
cross-claim or counterclaim in a lawsuit) alleging that the Work
or a Contribution incorporated within the Work constitutes direct
or contributory patent infringement, then any patent licenses
granted to You under this License for that Work shall terminate
as of the date such litigation is filed.
4. Redistribution. You may reproduce and distribute copies of the
Work or Derivative Works thereof in any medium, with or without
modifications, and in Source or Object form, provided that You
meet the following conditions:
(a) You must give any other recipients of the Work or
Derivative Works a copy of this License; and
(b) You must cause any modified files to carry prominent notices
stating that You changed the files; and
(c) You must retain, in the Source form of any Derivative Works
that You distribute, all copyright, patent, trademark, and
attribution notices from the Source form of the Work,
excluding those notices that do not pertain to any part of
the Derivative Works; and
(d) If the Work includes a "NOTICE" text file as part of its
distribution, then any Derivative Works that You distribute must
include a readable copy of the attribution notices contained
within such NOTICE file, excluding those notices that do not
pertain to any part of the Derivative Works, in at least one
of the following places: within a NOTICE text file distributed
as part of the Derivative Works; within the Source form or
documentation, if provided along with the Derivative Works; or,
within a display generated by the Derivative Works, if and
wherever such third-party notices normally appear. The contents
of the NOTICE file are for informational purposes only and
do not modify the License. You may add Your own attribution
notices within Derivative Works that You distribute, alongside
or as an addendum to the NOTICE text from the Work, provided
that such additional attribution notices cannot be construed
as modifying the License.
You may add Your own copyright statement to Your modifications and
may provide additional or different license terms and conditions
for use, reproduction, or distribution of Your modifications, or
for any such Derivative Works as a whole, provided Your use,
reproduction, and distribution of the Work otherwise complies with
the conditions stated in this License.
5. Submission of Contributions. Unless You explicitly state otherwise,
any Contribution intentionally submitted for inclusion in the Work
by You to the Licensor shall be under the terms and conditions of
this License, without any additional terms or conditions.
Notwithstanding the above, nothing herein shall supersede or modify
the terms of any separate license agreement you may have executed
with Licensor regarding such Contributions.
6. Trademarks. This License does not grant permission to use the trade
names, trademarks, service marks, or product names of the Licensor,
except as required for reasonable and customary use in describing the
origin of the Work and reproducing the content of the NOTICE file.
7. Disclaimer of Warranty. Unless required by applicable law or
agreed to in writing, Licensor provides the Work (and each
Contributor provides its Contributions) on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
implied, including, without limitation, any warranties or conditions
of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
PARTICULAR PURPOSE. You are solely responsible for determining the
appropriateness of using or redistributing the Work and assume any
risks associated with Your exercise of permissions under this License.
8. Limitation of Liability. In no event and under no legal theory,
whether in tort (including negligence), contract, or otherwise,
unless required by applicable law (such as deliberate and grossly
negligent acts) or agreed to in writing, shall any Contributor be
liable to You for damages, including any direct, indirect, special,
incidental, or consequential damages of any character arising as a
result of this License or out of the use or inability to use the
Work (including but not limited to damages for loss of goodwill,
work stoppage, computer failure or malfunction, or any and all
other commercial damages or losses), even if such Contributor
has been advised of the possibility of such damages.
9. Accepting Warranty or Additional Liability. While redistributing
the Work or Derivative Works thereof, You may choose to offer,
and charge a fee for, acceptance of support, warranty, indemnity,
or other liability obligations and/or rights consistent with this
License. However, in accepting such obligations, You may act only
on Your own behalf and on Your sole responsibility, not on behalf
of any other Contributor, and only if You agree to indemnify,
defend, and hold each Contributor harmless for any liability
incurred by, or claims asserted against, such Contributor by reason
of your accepting any such warranty or additional liability.
END OF TERMS AND CONDITIONS
APPENDIX: How to apply the Apache License to your work.
To apply the Apache License to your work, attach the following
boilerplate notice, with the fields enclosed by brackets "{}"
replaced with your own identifying information. (Don't include
the brackets!) The text should be enclosed in the appropriate
comment syntax for the file format. We also recommend that a
file or class name and description of purpose be included on the
same "printed page" as the copyright notice for easier
identification within third-party archives.
Copyright (C) 2012-present SheetJS LLC
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

20
packages/otorp/Makefile Normal file
View File

@ -0,0 +1,20 @@
LIBFILES=$(wildcard src/*.ts)
TSFILES=$(wildcard *.ts)
ENTRIES=$(subst .ts,.js,$(TSFILES))
.PHONY: all
all: $(ENTRIES)
index.node.js: index.node.ts $(LIBFILES)
npx esbuild $< --bundle --outfile=$@ --platform=node --format=cjs
%.node.js: %.node.ts $(LIBFILES)
npx esbuild $< --bundle --external:./ --outfile=$@ --platform=node
sed -i '' 's/ts-node/node/g' $@
%.js: %.ts $(LIBFILES)
npx esbuild $< --bundle --outfile=$@ --platform=browser --format=iife --global-name=$* --target=es5
.PHONY: clean
clean:
rm $(ENTRIES)

31
packages/otorp/README.md Normal file
View File

@ -0,0 +1,31 @@
# otorp
Recover [Protocol Buffer](https://en.wikipedia.org/wiki/Protocol_Buffers) v2
definitions from a Mach-O binary.
## Usage
```bash
$ npx otorp /path/to/macho/binary # print all discovered defs to stdout
$ npx otorp /path/to/macho/binary out/ # write each discovered def to a file
```
This library and the embedded `otorp` CLI tool make the following assumptions:
- In a serialized `FileDescriptorProto`, the `name` field appears first.
- The name does not exceed 127 bytes in length.
- The name always ends in ".proto".
- There is at least one simple reference to the start of the definition.
## License
Please consult the attached LICENSE file for details. All rights not explicitly
granted by the Apache 2.0 license are reserved by the Original Author.
[![Analytics](https://ga-beacon.appspot.com/UA-36810333-1/SheetJS/sheetjs?pixel)](https://github.com/SheetJS/sheetjs)

26
packages/otorp/dump_macho_proto_defs.node.js Executable file
View File

@ -0,0 +1,26 @@
#!/usr/bin/env node
// dump_macho_proto_defs.node.ts
var import_fs = require("fs");
var import_path = require("path");
var import__ = require("./");
if (!process.argv[2] || process.argv[2] == "-h" || process.argv[2] == "--help") {
[
"usage: otorp <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"
].map((x) => console.error(x));
process.exit(1);
}
var buf = (0, import_fs.readFileSync)(process.argv[2]);
var otorps = (0, import__.otorp)(buf);
otorps.forEach(({ name, proto }) => {
if (!process.argv[3]) {
console.log(proto);
} else {
var pth = (0, import_path.resolve)(process.argv[3] || "./", name.replace(/[/]/g, "$"));
console.error(`writing ${name} to ${pth}`);
(0, import_fs.writeFileSync)(pth, proto);
}
});
/*! sheetjs (C) 2013-present SheetJS -- http://sheetjs.com */

29
packages/otorp/dump_macho_proto_defs.node.ts Executable file
View File

@ -0,0 +1,29 @@
#!/usr/bin/env ts-node
/*! sheetjs (C) 2013-present SheetJS -- http://sheetjs.com */
/* eslint-env node */
import { readFileSync, writeFileSync } from 'fs';
import { resolve } from 'path';
import { otorp } from './';
if(!process.argv[2] || process.argv[2] == "-h" || process.argv[2] == "--help") {
[
"usage: otorp <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"
].map(x => console.error(x));
process.exit(1);
}
var buf = readFileSync(process.argv[2]);
var otorps = otorp(buf);
otorps.forEach(({name, proto}) => {
if(!process.argv[3]) {
console.log(proto);
} else {
var pth = resolve(process.argv[3] || "./", name.replace(/[/]/g, "$"));
console.error(`writing ${name} to ${pth}`);
writeFileSync(pth, proto);
}
});

539
packages/otorp/index.node.js Normal file
View File

@ -0,0 +1,539 @@
var __defProp = Object.defineProperty;
var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
var __getOwnPropNames = Object.getOwnPropertyNames;
var __hasOwnProp = Object.prototype.hasOwnProperty;
var __markAsModule = (target) => __defProp(target, "__esModule", { value: true });
var __export = (target, all) => {
for (var name in all)
__defProp(target, name, { get: all[name], enumerable: true });
};
var __reExport = (target, module2, copyDefault, desc) => {
if (module2 && typeof module2 === "object" || typeof module2 === "function") {
for (let key of __getOwnPropNames(module2))
if (!__hasOwnProp.call(target, key) && (copyDefault || key !== "default"))
__defProp(target, key, { get: () => module2[key], enumerable: !(desc = __getOwnPropDesc(module2, key)) || desc.enumerable });
}
return target;
};
var __toCommonJS = /* @__PURE__ */ ((cache) => {
return (module2, temp) => {
return cache && cache.get(module2) || (temp = __reExport(__markAsModule({}), module2, 1), cache && cache.set(module2, temp), temp);
};
})(typeof WeakMap !== "undefined" ? /* @__PURE__ */ new WeakMap() : 0);
// index.node.ts
var index_node_exports = {};
__export(index_node_exports, {
otorp: () => otorp_default
});
// ../../modules/src/util.ts
var u8_to_dataview = (array) => new DataView(array.buffer, array.byteOffset, array.byteLength);
var u8str = (u8) => new TextDecoder().decode(u8);
var indent = (str, depth) => str.split(/\n/g).map((x) => x && " ".repeat(depth) + x).join("\n");
function u8indexOf(u8, data, byteOffset) {
if (typeof data == "number")
return u8.indexOf(data, byteOffset);
var l = byteOffset;
if (typeof data == "string") {
outs:
while ((l = u8.indexOf(data.charCodeAt(0), l)) > -1) {
++l;
for (var j = 1; j < data.length; ++j)
if (u8[l + j - 1] != data.charCodeAt(j))
continue outs;
return l - 1;
}
} else {
outb:
while ((l = u8.indexOf(data[0], l)) > -1) {
++l;
for (var j = 1; j < data.length; ++j)
if (u8[l + j - 1] != data[j])
continue outb;
return l - 1;
}
}
return -1;
}
// src/macho.ts
var parse_fat = (buf) => {
var dv = u8_to_dataview(buf);
if (dv.getUint32(0, false) !== 3405691582)
throw new Error("Unsupported file");
var nfat_arch = dv.getUint32(4, false);
var out = [];
for (var i = 0; i < nfat_arch; ++i) {
var start = i * 20 + 8;
var cputype = dv.getUint32(start, false);
var cpusubtype = dv.getUint32(start + 4, false);
var offset = dv.getUint32(start + 8, false);
var size = dv.getUint32(start + 12, false);
var align = dv.getUint32(start + 16, false);
out.push({
type: cputype,
subtype: cpusubtype,
offset,
size,
align,
data: buf.slice(offset, offset + size)
});
}
return out;
};
var parse_macho = (buf) => {
var dv = u8_to_dataview(buf);
var magic = dv.getUint32(0, false);
switch (magic) {
case 3405691582:
return parse_fat(buf);
case 3489328638:
return [{
type: dv.getUint32(4, false),
subtype: dv.getUint32(8, false),
offset: 0,
size: buf.length,
data: buf
}];
}
throw new Error("Unsupported file");
};
// ../../modules/src/proto.ts
function parse_varint49(buf, ptr) {
var l = ptr ? ptr[0] : 0;
var usz = buf[l] & 127;
varint:
if (buf[l++] >= 128) {
usz |= (buf[l] & 127) << 7;
if (buf[l++] < 128)
break varint;
usz |= (buf[l] & 127) << 14;
if (buf[l++] < 128)
break varint;
usz |= (buf[l] & 127) << 21;
if (buf[l++] < 128)
break varint;
usz += (buf[l] & 127) * Math.pow(2, 28);
++l;
if (buf[l++] < 128)
break varint;
usz += (buf[l] & 127) * Math.pow(2, 35);
++l;
if (buf[l++] < 128)
break varint;
usz += (buf[l] & 127) * Math.pow(2, 42);
++l;
if (buf[l++] < 128)
break varint;
}
if (ptr)
ptr[0] = l;
return usz;
}
function varint_to_i32(buf) {
var l = 0, i32 = buf[l] & 127;
varint:
if (buf[l++] >= 128) {
i32 |= (buf[l] & 127) << 7;
if (buf[l++] < 128)
break varint;
i32 |= (buf[l] & 127) << 14;
if (buf[l++] < 128)
break varint;
i32 |= (buf[l] & 127) << 21;
if (buf[l++] < 128)
break varint;
i32 |= (buf[l] & 127) << 28;
}
return i32;
}
function parse_shallow(buf) {
var out = [], ptr = [0];
while (ptr[0] < buf.length) {
var off = ptr[0];
var num = parse_varint49(buf, ptr);
var type = num & 7;
num = Math.floor(num / 8);
var len = 0;
var res;
if (num == 0)
break;
switch (type) {
case 0:
{
var l = ptr[0];
while (buf[ptr[0]++] >= 128)
;
res = buf.slice(l, ptr[0]);
}
break;
case 5:
len = 4;
case 1:
if (!len)
len = 8;
case 2:
if (!len)
len = parse_varint49(buf, ptr);
res = buf.slice(ptr[0], ptr[0] + len);
ptr[0] += len;
break;
case 3:
case 4:
default:
throw new Error(`PB Type ${type} for Field ${num} at offset ${off}`);
}
var v = { offset: off, data: res };
if (out[num] == null)
out[num] = [v];
else
out[num].push(v);
}
return out;
}
function mappa(data, cb) {
if (!data)
return [];
return data.map((d) => {
try {
return cb(d.data);
} catch (e) {
var m = e.message?.match(/at offset (\d+)/);
if (m)
e.message = e.message.replace(/at offset (\d+)/, "at offset " + (+m[1] + d.offset));
throw e;
}
});
}
// src/descriptor.ts
var TYPES = [
"error",
"double",
"float",
"int64",
"uint64",
"int32",
"fixed64",
"fixed32",
"bool",
"string",
"group",
"message",
"bytes",
"uint32",
"enum",
"sfixed32",
"sfixed64",
"sint32",
"sint64"
];
function parse_FileOptions(buf) {
var data = parse_shallow(buf);
var out = {};
if (data[1]?.[0])
out.javaPackage = u8str(data[1][0].data);
if (data[8]?.[0])
out.javaOuterClassname = u8str(data[8][0].data);
if (data[11]?.[0])
out.goPackage = u8str(data[11][0].data);
return out;
}
function parse_EnumValue(buf) {
var data = parse_shallow(buf);
var out = {};
if (data[1]?.[0])
out.name = u8str(data[1][0].data);
if (data[2]?.[0])
out.number = varint_to_i32(data[2][0].data);
return out;
}
function parse_Enum(buf) {
var data = parse_shallow(buf);
var out = {};
if (data[1]?.[0])
out.name = u8str(data[1][0].data);
out.value = mappa(data[2], parse_EnumValue);
return out;
}
var write_Enum = (en) => {
var out = [`enum ${en.name} {`];
en.value?.forEach(({ name, number }) => out.push(` ${name} = ${number};`));
return out.concat(`}`).join("\n");
};
function parse_FieldOptions(buf) {
var data = parse_shallow(buf);
var out = {};
if (data[2]?.[0])
out.packed = !!data[2][0].data;
if (data[3]?.[0])
out.deprecated = !!data[3][0].data;
return out;
}
function parse_Field(buf) {
var data = parse_shallow(buf);
var out = {};
if (data[1]?.[0])
out.name = u8str(data[1][0].data);
if (data[2]?.[0])
out.extendee = u8str(data[2][0].data);
if (data[3]?.[0])
out.number = varint_to_i32(data[3][0].data);
if (data[4]?.[0])
out.label = varint_to_i32(data[4][0].data);
if (data[5]?.[0])
out.type = varint_to_i32(data[5][0].data);
if (data[6]?.[0])
out.typeName = u8str(data[6][0].data);
if (data[7]?.[0])
out.defaultValue = u8str(data[7][0].data);
if (data[8]?.[0])
out.options = parse_FieldOptions(data[8][0].data);
return out;
}
function write_Field(field) {
var out = [];
var label = ["", "optional ", "required ", "repeated "][field.label] || "";
var type = field.typeName || TYPES[field.type] || "s5s";
var opts = [];
if (field.defaultValue)
opts.push(`default = ${field.defaultValue}`);
if (field.options?.packed)
opts.push(`packed = true`);
if (field.options?.deprecated)
opts.push(`deprecated = true`);
var os = opts.length ? ` [${opts.join(", ")}]` : "";
out.push(`${label}${type} ${field.name} = ${field.number}${os};`);
return out.length ? indent(out.join("\n"), 1) : "";
}
function write_extensions(ext, xtra = false, coalesce = true) {
var res = [];
var xt = [];
ext.forEach((ext2) => {
if (!ext2.extendee)
return;
var row = coalesce ? xt.find((x) => x[0] == ext2.extendee) : xt[xt.length - 1]?.[0] == ext2.extendee ? xt[xt.length - 1] : null;
if (row)
row[1].push(ext2);
else
xt.push([ext2.extendee, [ext2]]);
});
xt.forEach((extrow) => {
var out = [`extend ${extrow[0]} {`];
extrow[1].forEach((ext2) => out.push(write_Field(ext2)));
res.push(out.concat(`}`).join("\n") + (xtra ? "\n" : ""));
});
return res.join("\n");
}
function parse_mtype(buf) {
var data = parse_shallow(buf);
var out = {};
if (data[1]?.[0])
out.name = u8str(data[1][0].data);
if (data[2]?.length >= 1)
out.field = mappa(data[2], parse_Field);
if (data[3]?.length >= 1)
out.nestedType = mappa(data[3], parse_mtype);
if (data[4]?.length >= 1)
out.enumType = mappa(data[4], parse_Enum);
if (data[6]?.length >= 1)
out.extension = mappa(data[6], parse_Field);
if (data[5]?.length >= 1)
out.extensionRange = data[5].map((d) => {
var data2 = parse_shallow(d.data);
var out2 = {};
if (data2[1]?.[0])
out2.start = varint_to_i32(data2[1][0].data);
if (data2[2]?.[0])
out2.end = varint_to_i32(data2[2][0].data);
return out2;
});
return out;
}
var write_mtype = (message) => {
var out = [`message ${message.name} {`];
message.nestedType?.forEach((m) => out.push(indent(write_mtype(m), 1)));
message.enumType?.forEach((en) => out.push(indent(write_Enum(en), 1)));
message.field?.forEach((field) => out.push(write_Field(field)));
if (message.extensionRange)
message.extensionRange.forEach((er) => out.push(` extensions ${er.start} to ${er.end - 1};`));
if (message.extension?.length)
out.push(indent(write_extensions(message.extension), 1));
return out.concat(`}`).join("\n");
};
function parse_FileDescriptor(buf) {
var data = parse_shallow(buf);
var out = {};
if (data[1]?.[0])
out.name = u8str(data[1][0].data);
if (data[2]?.[0])
out.package = u8str(data[2][0].data);
if (data[3]?.[0])
out.dependency = data[3].map((x) => u8str(x.data));
if (data[4]?.length >= 1)
out.messageType = mappa(data[4], parse_mtype);
if (data[5]?.length >= 1)
out.enumType = mappa(data[5], parse_Enum);
if (data[7]?.length >= 1)
out.extension = mappa(data[7], parse_Field);
if (data[8]?.[0])
out.options = parse_FileOptions(data[8][0].data);
return out;
}
var write_FileDescriptor = (pb) => {
var out = [
'syntax = "proto2";',
""
];
if (pb.dependency)
pb.dependency.forEach((n) => {
if (n)
out.push(`import "${n}";`);
});
if (pb.package)
out.push(`package ${pb.package};
`);
if (pb.options) {
var o = out.length;
if (pb.options.javaPackage)
out.push(`option java_package = "${pb.options.javaPackage}";`);
if (pb.options.javaOuterClassname?.replace(/\W/g, ""))
out.push(`option java_outer_classname = "${pb.options.javaOuterClassname}";`);
if (pb.options.javaMultipleFiles)
out.push(`option java_multiple_files = true;`);
if (pb.options.goPackage)
out.push(`option go_package = "${pb.options.goPackage}";`);
if (out.length > o)
out.push("");
}
pb.enumType?.forEach((en) => {
if (en.name)
out.push(write_Enum(en) + "\n");
});
pb.messageType?.forEach((m) => {
if (m.name) {
var o2 = write_mtype(m);
if (o2)
out.push(o2 + "\n");
}
});
if (pb.extension?.length) {
var e = write_extensions(pb.extension, true, false);
if (e)
out.push(e);
}
return out.join("\n") + "\n";
};
// src/otorp.ts
function otorp(buf, builtins = false) {
var res = proto_offsets(buf);
var registry = {};
var names = /* @__PURE__ */ new Set();
var out = [];
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);
names.add(r[1]);
registry[r[1]] = pb;
});
names.forEach((name) => {
names.delete(name);
var pb = registry[name];
var doit = (pb.dependency || []).every((d) => !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) });
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 pb2 = parse_FileDescriptorProto(b);
return write_FileDescriptor(pb2);
});
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;
}
var otorp_default = otorp;
var is_referenced = (buf, pos) => {
var dv = u8_to_dataview(buf);
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.setInt32(0, p, true);
if (u8indexOf(b, ref, 0) > 0)
return true;
ref[4] = 1;
if (u8indexOf(b, ref, 0) > 0)
return true;
}
} catch (e) {
}
return false;
};
var proto_offsets = (buf) => {
var meta = parse_macho(buf);
var out = [];
var off = 0;
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] > 127 || buf[pos] < 32)
continue search;
--pos;
}
if (off - pos > 250)
continue;
var name = u8str(buf.slice(pos + 1, off));
if (buf[--pos] != 10)
continue;
if (!is_referenced(buf, pos)) {
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;
};
var parse_FileDescriptorProto = (buf) => {
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");
};
module.exports = __toCommonJS(index_node_exports);
// Annotate the CommonJS export names for ESM import in node:
0 && (module.exports = {
otorp
});
/*! otorp (C) 2013-present SheetJS -- http://sheetjs.com */
/*! sheetjs (C) 2013-present SheetJS -- http://sheetjs.com */

4
packages/otorp/index.node.ts Normal file
View File

@ -0,0 +1,4 @@
/*! otorp (C) 2013-present SheetJS -- http://sheetjs.com */
import otorp from "./src/otorp";
export { otorp };

31
packages/otorp/package.json Normal file
View File

@ -0,0 +1,31 @@
{
"name": "otorp",
"version": "0.0.0",
"author": "sheetjs",
"description": "Recover protobuf definitions from Mach-O binaries",
"bin": {
"otorp": "dump_macho_proto_defs.node.js"
},
"main": "index.node.js",
"dependencies": {
},
"devDependencies": {
"esbuild": "0.14.14"
},
"repository": {
"type": "git",
"url": "git://github.com/SheetJS/sheetjs.git"
},
"scripts": {
"build": "make"
},
"homepage": "https://sheetjs.com/",
"files": ["index.node.js", "dump_macho_proto_defs.node.js", "LICENSE", "README.md"],
"bugs": {
"url": "https://github.com/SheetJS/sheetjs/issues"
},
"license": "Apache-2.0",
"engines": {
"node": ">=0.8"
}
}

238
packages/otorp/src/descriptor.ts Normal file
View File

@ -0,0 +1,238 @@
/*! otorp (C) 2013-present SheetJS -- http://sheetjs.com */
import { parse_shallow, varint_to_i32, mappa } from "../../../modules/src/proto";
import { u8str, indent } from "../../../modules/src/util";
var TYPES = [
"error",
"double",
"float",
"int64",
"uint64",
"int32",
"fixed64",
"fixed32",
"bool",
"string",
"group",
"message",
"bytes",
"uint32",
"enum",
"sfixed32",
"sfixed64",
"sint32",
"sint64"
];
export { TYPES };
interface FileOptions {
javaPackage?: string;
javaOuterClassname?: string;
javaMultipleFiles?: string;
goPackage?: string;
}
function parse_FileOptions(buf: Uint8Array): FileOptions {
var data = parse_shallow(buf);
var out: FileOptions = {};
if(data[1]?.[0]) out.javaPackage = u8str(data[1][0].data);
if(data[8]?.[0]) out.javaOuterClassname = u8str(data[8][0].data);
if(data[11]?.[0]) out.goPackage = u8str(data[11][0].data);
return out;
}
interface EnumValue {
name?: string;
number?: number;
}
function parse_EnumValue(buf: Uint8Array): EnumValue {
var data = parse_shallow(buf);
var out: EnumValue = {};
if(data[1]?.[0]) out.name = u8str(data[1][0].data);
if(data[2]?.[0]) out.number = varint_to_i32(data[2][0].data);
return out;
}
interface Enum {
name?: string;
value?: EnumValue[];
}
function parse_Enum(buf: Uint8Array): Enum {
var data = parse_shallow(buf);
var out: Enum = {};
if(data[1]?.[0]) out.name = u8str(data[1][0].data);
out.value = mappa(data[2], parse_EnumValue);
return out;
}
var write_Enum = (en: Enum): string => {
var out = [`enum ${en.name} {`];
en.value?.forEach(({name, number}) => out.push(` ${name} = ${number};`));
return out.concat(`}`).join("\n");
};
export { Enum, parse_Enum, write_Enum };
interface FieldOptions {
packed?: boolean;
deprecated?: boolean;
}
function parse_FieldOptions(buf: Uint8Array): FieldOptions {
var data = parse_shallow(buf);
var out: FieldOptions = {};
if(data[2]?.[0]) out.packed = !!data[2][0].data;
if(data[3]?.[0]) out.deprecated = !!data[3][0].data;
return out;
}
interface Field {
name?: string;
extendee?: string;
number?: number;
label?: number;
type?: number;
typeName?: string;
defaultValue?: string;
options?: FieldOptions;
}
function parse_Field(buf: Uint8Array): Field {
var data = parse_shallow(buf);
var out: Field = {};
if(data[1]?.[0]) out.name = u8str(data[1][0].data);
if(data[2]?.[0]) out.extendee = u8str(data[2][0].data);
if(data[3]?.[0]) out.number = varint_to_i32(data[3][0].data);
if(data[4]?.[0]) out.label = varint_to_i32(data[4][0].data);
if(data[5]?.[0]) out.type = varint_to_i32(data[5][0].data);
if(data[6]?.[0]) out.typeName = u8str(data[6][0].data);
if(data[7]?.[0]) out.defaultValue = u8str(data[7][0].data);
if(data[8]?.[0]) out.options = parse_FieldOptions(data[8][0].data);
return out;
}
function write_Field(field: Field): string {
var out = [];
var label = ["", "optional ", "required ", "repeated "][field.label] || "";
var type = field.typeName || TYPES[field.type] || "s5s";
var opts = [];
if(field.defaultValue) opts.push(`default = ${field.defaultValue}`);
if(field.options?.packed) opts.push(`packed = true`);
if(field.options?.deprecated) opts.push(`deprecated = true`);
var os = opts.length ? ` [${opts.join(", ")}]`: "";
out.push(`${label}${type} ${field.name} = ${field.number}${os};`);
return out.length ? indent(out.join("\n"), 1) : "";
}
export { Field, parse_Field, write_Field };
function write_extensions(ext: Field[], xtra = false, coalesce = true): string {
var res = [];
var xt: Array<[string, Array<Field>]> = [];
ext.forEach(ext => {
if(!ext.extendee) return;
var row = coalesce ?
xt.find(x => x[0] == ext.extendee) :
(xt[xt.length - 1]?.[0] == ext.extendee ? xt[xt.length - 1]: null);
if(row) row[1].push(ext);
else xt.push([ext.extendee, [ext]]);
});
xt.forEach(extrow => {
var out = [`extend ${extrow[0]} {`];
extrow[1].forEach(ext => out.push(write_Field(ext)));
res.push(out.concat(`}`).join("\n") + (xtra ? "\n" : ""));
});
return res.join("\n");
}
export { write_extensions };
interface ExtensionRange { start?: number; end?: number; }
interface MessageType {
name?: string;
nestedType?: MessageType[];
enumType?: Enum[];
field?: Field[];
extension?: Field[];
extensionRange?: ExtensionRange[];
}
function parse_mtype(buf: Uint8Array): MessageType {
var data = parse_shallow(buf);
var out: MessageType = {};
if(data[1]?.[0]) out.name = u8str(data[1][0].data);
if(data[2]?.length >= 1) out.field = mappa(data[2], parse_Field);
if(data[3]?.length >= 1) out.nestedType = mappa(data[3], parse_mtype);
if(data[4]?.length >= 1) out.enumType = mappa(data[4], parse_Enum);
if(data[6]?.length >= 1) out.extension = mappa(data[6], parse_Field);
if(data[5]?.length >= 1) out.extensionRange = data[5].map(d => {
var data = parse_shallow(d.data);
var out: ExtensionRange = {};
if(data[1]?.[0]) out.start = varint_to_i32(data[1][0].data);
if(data[2]?.[0]) out.end = varint_to_i32(data[2][0].data);
return out;
});
return out;
}
var write_mtype = (message: MessageType): string => {
var out = [ `message ${message.name} {` ];
message.nestedType?.forEach(m => out.push(indent(write_mtype(m), 1)));
message.enumType?.forEach(en => out.push(indent(write_Enum(en), 1)));
message.field?.forEach(field => out.push(write_Field(field)));
if(message.extensionRange) message.extensionRange.forEach(er => out.push(` extensions ${er.start} to ${er.end - 1};`));
if(message.extension?.length) out.push(indent(write_extensions(message.extension), 1));
return out.concat(`}`).join("\n");
};
interface Descriptor {
name?: string;
package?: string;
dependency?: string[];
messageType?: MessageType[];
enumType?: Enum[];
extension?: Field[];
options?: FileOptions;
}
function parse_FileDescriptor(buf: Uint8Array): Descriptor {
var data = parse_shallow(buf);
var out: Descriptor = {};
if(data[1]?.[0]) out.name = u8str(data[1][0].data);
if(data[2]?.[0]) out.package = u8str(data[2][0].data);
if(data[3]?.[0]) out.dependency = data[3].map(x => u8str(x.data));
if(data[4]?.length >= 1) out.messageType = mappa(data[4], parse_mtype);
if(data[5]?.length >= 1) out.enumType = mappa(data[5], parse_Enum);
if(data[7]?.length >= 1) out.extension = mappa(data[7], parse_Field);
if(data[8]?.[0]) out.options = parse_FileOptions(data[8][0].data);
return out;
}
var write_FileDescriptor = (pb: Descriptor): string => {
var out = [
'syntax = "proto2";',
''
];
if(pb.dependency) pb.dependency.forEach((n: string) => { if(n) out.push(`import "${n}";`); });
if(pb.package) out.push(`package ${pb.package};\n`);
if(pb.options) {
var o = out.length;
if(pb.options.javaPackage) out.push(`option java_package = "${pb.options.javaPackage}";`);
if(pb.options.javaOuterClassname?.replace(/\W/g, "")) out.push(`option java_outer_classname = "${pb.options.javaOuterClassname}";`);
if(pb.options.javaMultipleFiles) out.push(`option java_multiple_files = true;`);
if(pb.options.goPackage) out.push(`option go_package = "${pb.options.goPackage}";`);
if(out.length > o) out.push('');
}
pb.enumType?.forEach(en => { if(en.name) out.push(write_Enum(en) + "\n"); });
pb.messageType?.forEach(m => { if(m.name) { var o = write_mtype(m); if(o) out.push(o + "\n"); }});
if(pb.extension?.length) {
var e = write_extensions(pb.extension, true, false);
if(e) out.push(e);
}
return out.join("\n") + "\n";
};
export { Descriptor, parse_FileDescriptor, write_FileDescriptor };

55
packages/otorp/src/macho.ts Normal file
View File

@ -0,0 +1,55 @@
/*! otorp (C) 2013-present SheetJS -- http://sheetjs.com */
import { u8_to_dataview } from "../../../modules/src/util";
interface MachOEntry {
type: number;
subtype: number;
offset: number;
size: number;
align?: number;
data: Uint8Array;
}
var parse_fat = (buf: Uint8Array): MachOEntry[] => {
var dv = u8_to_dataview(buf);
if(dv.getUint32(0, false) !== 0xCAFEBABE) throw new Error("Unsupported file");
var nfat_arch = dv.getUint32(4, false);
var out: MachOEntry[] = [];
for(var i = 0; i < nfat_arch; ++i) {
var start = i * 20 + 8;
var cputype = dv.getUint32(start, false);
var cpusubtype = dv.getUint32(start+4, false);
var offset = dv.getUint32(start+8, false);
var size = dv.getUint32(start+12, false);
var align = dv.getUint32(start+16, false);
out.push({
type: cputype,
subtype: cpusubtype,
offset,
size,
align,
data: buf.slice(offset, offset + size)
});
}
return out;
};
var parse_macho = (buf: Uint8Array): MachOEntry[] => {
var dv = u8_to_dataview(buf);
var magic = dv.getUint32(0, false);
switch(magic) {
// fat binary (x86_64 / aarch64)
case 0xCAFEBABE: return parse_fat(buf);
// x86_64
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");
};
export { MachOEntry, parse_macho };

113
packages/otorp/src/otorp.ts Normal file
View File

@ -0,0 +1,113 @@
/*! otorp (C) 2013-present SheetJS -- http://sheetjs.com */
import { u8indexOf, u8str, u8_to_dataview } from "../../../modules/src/util";
import { parse_macho } from "./macho";
import { Descriptor, parse_FileDescriptor, write_FileDescriptor } from './descriptor';
interface OtorpEntry {
name: string;
proto: string;
}
export { OtorpEntry };
/** 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);
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.setInt32(0, p, true);
if(u8indexOf(b, ref, 0) > 0) return true;
ref[4] = 0x01;
if(u8indexOf(b, ref, 0) > 0) return true;
}
} catch(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} 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");
};