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syscall,misc/wasm: fix path expansion on non-unix platforms

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When running a go binary compiled to wasm using node.js on a Windows platform,
the absolute path passed in is also incorrectly forced to expand.

For example:

E:\Project\CS_Project\gsv\testdata\result.gob.gz

will results to

open C:\Users\zxilly\AppData\Local\wasm-exec\go1.23rc1\E:\Project\CS_Project\gsv\testdata\result.gob.gz: No such file or directory

C:\Users\zxilly\AppData\Local\wasm-exec\go1.23rc1 is the place of
wasm_exec_node.js

Fixes: #68820

Change-Id: Ic30c6242302f8915ac1b8ea9f24546935cbb791e
GitHub-Last-Rev: f35ff1a2ee
GitHub-Pull-Request: golang/go#68255
Reviewed-on: https://go-review.googlesource.com/c/go/+/595797
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com>
This commit is contained in:
Zxilly 2024-08-09 17:43:11 +00:00 committed by Johan Brandhorst-Satzkorn
parent c8ccbcdde5
commit bcec5f1540
3 changed files with 12 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
misc/wasm/wasm_exec.js
View File

@ -73,6 +73,14 @@
}
}
if (!globalThis.path) {
globalThis.path = {
resolve(...pathSegments) {
return pathSegments.join("/");
}
}
}
if (!globalThis.crypto) {
throw new Error("globalThis.crypto is not available, polyfill required (crypto.getRandomValues only)");
}

1
misc/wasm/wasm_exec_node.js
View File

@ -11,6 +11,7 @@ if (process.argv.length < 3) {
globalThis.require = require;
globalThis.fs = require("fs");
globalThis.path = require("path");
globalThis.TextEncoder = require("util").TextEncoder;
globalThis.TextDecoder = require("util").TextDecoder;

7
src/syscall/fs_js.go
View File

@ -16,6 +16,7 @@ import (
func now() (sec int64, nsec int32)
var jsProcess = js.Global().Get("process")
var jsPath = js.Global().Get("path")
var jsFS = js.Global().Get("fs")
var constants = jsFS.Get("constants")
@ -101,10 +102,8 @@ func Open(path string, openmode int, perm uint32) (int, error) {
}
}
if path[0] != '/' {
cwd := jsProcess.Call("cwd").String()
path = cwd + "/" + path
}
path = jsPath.Call("resolve", path).String()
f := &jsFile{
path: path,
entries: entries,