issue1158-stdin-for-single-files

changelog/stdinForSingleFilePackages.dd

@@ -0,0 +1,6 @@
+DUB accepts single file packages on STDIN
+
+You can pass single file packages to dub on STDIN using dash as first argument to DUB.
+All arguments after dash will be passed as runtime arguments to the application.
+
+Example `cat app.d | dub - --foo=bar`

source/dub/commandline.d

@@ -97,6 +97,16 @@ int runDubCommandLine(string[] args)
 		environment["TEMP"] = environment["TEMP"].replace("/", "\\");
 	}
 
+	// special stdin syntax
+	if (args.length >= 2 && args[1] == "-")
+	{
+		import dub.internal.utils: getTempFile;
+
+		auto path = getTempFile("app", ".d");
+		stdin.byChunk(4096).joiner.toFile(path.toNativeString());
+		args = args[0] ~ [path.toNativeString()] ~ args[2..$];
+	}
+
 	// special single-file package shebang syntax
 	if (args.length >= 2 && args[1].endsWith(".d")) {
 		args = args[0] ~ ["run", "-q", "--temp-build", "--single", args[1], "--"] ~ args[2 ..$];

source/dub/internal/utils.d

@@ -40,8 +40,14 @@ NativePath getTempDir()
 NativePath getTempFile(string prefix, string extension = null)
 {
 	import std.uuid : randomUUID;
+	import std.array: replace;
 
-	auto path = getTempDir() ~ (prefix ~ "-" ~ randomUUID.toString() ~ extension);
+	string fileName = prefix ~ "-" ~ randomUUID.toString() ~ extension;
+
+	if (extension !is null && extension == ".d")
+		fileName = fileName.replace("-", "_");
+
+	auto path = getTempDir() ~ fileName;
 	temporary_files ~= path;
 	return path;
 }

test/issue1158-stdin-for-single-files.sh

@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+
+. $(dirname "${BASH_SOURCE[0]}")/common.sh
+
+cd ${CURR_DIR}/issue1158-stdin-for-single-files
+
+if ! { cat stdin.d | ${DUB} - --value=v 2>&1 || true; } | grep -cF '["--value=v"]'; then
+	die $LINENO 'Stdin for single files failed.'
+fi

test/issue1158-stdin-for-single-files/stdin.d

@@ -0,0 +1,7 @@
+/+ dub.sdl:
+	name "hello"
++/
+void main(string[] args) {
+	import std.stdio : writeln;
+	writeln(args[1..$]);
+}