Add a Batch stdin wrapper script

autoload/ale/util.vim

@@ -8,7 +8,7 @@ function! s:FindWrapperScript() abort
 
         if filereadable(l:path)
             if has('win32')
-                return l:path . '.exe'
+                return l:path . '.bat'
             endif
 
             return l:path

stdin-wrapper.bat

@@ -0,0 +1,22 @@
+@echo off
+
+REM Get a unique directory name in the temporary directory
+:loop
+set "directory=%tmp%\ale_%RANDOM%"
+if exist "%directory%" goto :loop
+
+REM Use a filename with the same file extension
+mkdir "%directory%"
+set filename="%directory%\file%1"
+
+REM Get all arguments after the first to run as a command
+for /f "tokens=1,* delims= " %%a in ("%*") do set command_args=%%b
+
+REM Read all stdin data to the filename
+more > "%filename%"
+
+REM Run the command on the file
+%command_args% "%filename%"
+
+REM Delete the temporary directory
+rmdir "%directory%" /s /q

stdin_wrapper.d

@@ -1,84 +0,0 @@
-// Author: w0rp <devw0rp@gmail.com>
-// Description: This file provides a D program for implementing
-//              the stdin-wrapper on Windows.
-
-import std.algorithm;
-import std.array;
-import std.file;
-import std.process;
-import std.stdio;
-import std.path;
-
-@safe
-auto createTemporaryFilename(string fileExtension) {
-    import std.uuid;
-
-    string filename;
-
-    do {
-        const randomPart = randomUUID().toString.replace("-", "_");
-
-        filename = buildPath(tempDir(), "ale_" ~ randomPart ~ fileExtension);
-    } while (exists(filename));
-
-    return filename;
-}
-
-@trusted
-void readStdinToFile(ref File tempFile) {
-    stdin.byChunk(4096).copy(tempFile.lockingTextWriter());
-}
-
-// Expand program names like "csslint" to "csslint.cmd"
-// D is not able to perform this kind of expanstion in spawnProcess
-@safe
-string expandedProgramName(string name) {
-    auto extArray = environment["PATHEXT"].split(";");
-
-    foreach(pathDir; environment["PATH"].split(";")) {
-        foreach(extension; extArray) {
-            const candidate = buildPath(pathDir, name ~ extension);
-
-            if (exists(candidate)) {
-                return candidate;
-            }
-        }
-    }
-
-    // We were given a full path for a program name, so use that.
-    if (exists(name)) {
-        return name;
-    }
-
-    return "";
-}
-
-@trusted
-int runLinterProgram(string[] args) {
-    const expandedName = expandedProgramName(args[0]);
-
-    writeln(expandedName);
-
-    if (expandedName) {
-        return wait(spawnProcess([expandedName] ~ args[1..$]));
-    }
-
-    return 1;
-}
-
-@safe
-int main(string[] args) {
-    const filename = createTemporaryFilename(args[1]);
-
-    auto tempFile = File(filename, "w");
-
-    scope(exit) {
-        tempFile.close();
-        remove(filename);
-    }
-
-    readStdinToFile(tempFile);
-    tempFile.close();
-
-    return runLinterProgram(args[2..$] ~ [filename]);
-}