add a global.json warning utility

main.go

@@ -10,7 +10,7 @@ import (
 // Some options here. Would be improved in beta release.
 const DEDUCT_PKGNAME_FROM_VARNAME = true
 const USE_PROJECT_NETVER_INSTEAD_OF_HINTPATH_NETVER = false
-const OPENXT_VERSION = "1.4.1-1"
+const OPENXT_VERSION = "1.4.1-2"
 
 func print_help_and_exit() {
 	println("Usage: openxt <subcommand> [options...]")

tools/csproj-to-5/main.go

@@ -4,6 +4,7 @@ import (
 	"io/ioutil"
 	"log"
 	"os"
+	"path/filepath"
 	"strings"
 )
 
@@ -40,6 +41,39 @@ func stringReplaceOnceInsensitive(s, old, new string) string {
 }
 ///////////////////////////// utils END
 
+// Send a warning if there's any "global.json" existing in parent path.
+// BeginPoint could be a filename, or a directory. However, the leaf entry would be discarded (skipped)!
+//
+// Example: If beginPoint is `./program/minecraft/hmcl.jar`, then I'll search `./program/minecraft/*`,
+//   `./program/*`, `./*`, `./../*`, ...
+// If beginPoint is `./program/minecraft`, then I'll search `./program/*`, `./*`, `./../*` ...
+func warnGlobalJson(beginPoint string) {
+	// Make it abs path.
+	if !filepath.IsAbs(beginPoint) {
+		wd, err := os.Getwd()
+		if err != nil {
+			return
+		}
+		beginPoint = filepath.Join(wd, beginPoint)
+	}
+
+	// Iterate
+	currPath := beginPoint
+	for {
+		// Go to parent, and exit the loop if we're already on root (`/` or `C:\`).
+		par := filepath.Dir(currPath)
+		if par == currPath {
+			break
+		}
+		currPath = par
+
+		// Check if global.json exists in this level.
+		if _, err := os.Stat(filepath.Join(currPath, "global.json")); err == nil {
+			println("WARNING: Please consider remove " + currPath + string(os.PathSeparator) + "global.json . It may cause problem to your dotnet. ")
+		}
+	}
+}
+
 // This is a naive tool to convert CoreXT csproj file to dotnet 5 csproj file.
 // It should work on 99% well-formatted csproj file.
 // |
@@ -54,7 +88,9 @@ func main() {
 	content, err := ioutil.ReadFile(fname)
 	panicErrorIfAny(err, "read file " + fname)
 
-	// Good luck for old MacOS! They use single \r as newline.
+	warnGlobalJson(fname)
+
+	// May have problem here for old MacOS! They use single \r as newline.
 	lines := strings.Split(strings.ReplaceAll(string(content), "\r\n", "\n"), "\n")
 	resultTxt := ""
 	removeEndOfTagInNextLine := "" // Empty value indicates no need to remove EOT.