Checkpoint getting runfiles

ryanmcdermott · ryanmcdermott · commit b41ad5714442 · 2022-12-28T21:56:51.000-08:00
diff --git a/devserver/defs.bzl b/devserver/defs.bzl
@@ -1,10 +1,16 @@
-def devserver(name, port):
+def devserver(name, port, static_file, data = []):
+    normalized_static_file = Label(native.repository_name() + "//" + native.package_name()).relative(static_file)
     native.cc_binary(
         name = name,
         srcs = [
             Label("@rules_devserver//devserver:main"), 
             Label("@rules_devserver//devserver:httplib")
         ],
-        args = ["--port=%d" % port],
+        args = [
+            "--port=%d" % port, 
+            "--static_file=%s" % normalized_static_file
+        ],
+        data = data,
+        deps = ["@bazel_tools//tools/cpp/runfiles"],
         linkopts = ["-lpthread"],
     )
diff --git a/devserver/main.cc b/devserver/main.cc
@@ -1,9 +1,24 @@
 #include "devserver/httplib/httplib.h"
+#include "tools/cpp/runfiles/runfiles.h"
+
+using bazel::tools::cpp::runfiles::Runfiles;
 
 int main(int argc, char **argv) {
   httplib::Server svr;
   std::string port = "8080";
 
+  std::string runfiles_error;
+  std::unique_ptr<Runfiles> runfiles(
+      Runfiles::Create(argv[0], BAZEL_CURRENT_REPOSITORY, &runfiles_error));
+
+  std::string path = runfiles->Rlocation("devserver/");
+  std::cout << "path: " << path << std::endl;
+
+  // print all args
+  for (int i = 0; i < argc; i++) {
+    std::cout << "argv[" << i << "] = " << argv[i] << std::endl;
+  }
+
   for (int i = 0; i < argc; i++) {
     if (std::string(argv[i]).rfind("--port", 0) != std::string::npos) {
       port = std::string(argv[i]).substr(7);
diff --git a/examples/BUILD b/examples/BUILD
diff --git a/examples/single_static_file/BUILD b/examples/single_static_file/BUILD
@@ -0,0 +1,14 @@
+load("//devserver:defs.bzl", "devserver")
+
+filegroup(
+    name = "index",
+    srcs = ["index.html"],
+    visibility = ["//visibility:public"],
+)
+
+devserver(
+    name = "serve",
+    port = 8081,
+    static_file = ":index",
+    data = [":index"],
+)
diff --git a/examples/single_static_file/index.html b/examples/single_static_file/index.html
@@ -0,0 +1,12 @@
+<html>
+
+<head>
+    <title>Single Static File</title>
+</head>
+
+<body>
+    <h1>Single Static File</h1>
+    <p>This is a single static file.</p>
+</body>
+
+</html>
