[core] Added builtin default command line options

CMakeLists.txt

@@ -8,7 +8,8 @@ project(pipy)
 
 option(PIPY_GUI "include builtin GUI" OFF)
 option(PIPY_CODEBASES "include builtin codebases in the executable" OFF)
-option(PIPY_CUSTOM_CODEBASES "include custom codebases in the executable (<group>/<name>:<path>,<group>/<name>:<path>,...)" "")
+option(PIPY_CUSTOM_CODEBASES "include custom codebases in the executable (<group>/<name>:<path>,<group>/<name>:<path>,...)" OFF)
+option(PIPY_DEFAULT_OPTIONS "fixed command line options to insert before user options" OFF)
 option(PIPY_BPF "enable eBPF support" ON)
 option(PIPY_SOIL_FREED_SPACE "invalidate freed space for debugging" OFF)
 option(PIPY_ASSERT_SAME_THREAD "enable assertions for strict inner-thread data access" OFF)
@@ -399,6 +400,10 @@ if(PIPY_CODEBASES)
   add_dependencies(pipy PackCodebases)
 endif()
 
+if(PIPY_DEFAULT_OPTIONS)
+  add_definitions(-DPIPY_DEFAULT_OPTIONS="${PIPY_DEFAULT_OPTIONS}")
+endif()
+
 if(PIPY_BPF)
   if(CMAKE_SYSTEM_NAME STREQUAL "Linux")
     if(CMAKE_SYSTEM_VERSION VERSION_GREATER_EQUAL 4.18)

src/main-options.cpp

@@ -44,11 +44,20 @@ auto MainOptions::global() -> MainOptions& {
 void MainOptions::show_help() {
   std::cout << "Usage: pipy [options] [<expression | pathname | URL>]" << std::endl;
   std::cout << std::endl;
+
   std::cout << "URL can be one of:" << std::endl;
   std::cout << "  - http[s]://<host>:<port>/<codebase> Run <codebase> from the remote repo at <host>:<port>" << std::endl;
   std::cout << "  - http[s]://<host>:<port>            Run as a proxy to the remote repo at <host>:<port>" << std::endl;
   std::cout << "  - repo://<codebase>                  Run a builtin codebase" << std::endl;
   std::cout << std::endl;
+
+#ifdef PIPY_DEFAULT_OPTIONS
+  std::cout << "Default options: " << std::endl;
+  std::cout << "  " << PIPY_DEFAULT_OPTIONS << std::endl;
+  std::cout << "  Start your options with --pipy to cancel all default options" << std::endl;
+  std::cout << std::endl;
+#endif
+
   std::cout << "Options:" << std::endl;
   std::cout << "  -h, -help, --help                    Show help information" << std::endl;
   std::cout << "  -v, -version, --version              Show version information" << std::endl;
@@ -111,10 +120,23 @@ static const struct {
 void MainOptions::parse(int argc, char *argv[]) {
   arguments.push_back(argv[0]);
 
+#ifdef PIPY_DEFAULT_OPTIONS
+  std::list<std::string> args = utils::split_argv(PIPY_DEFAULT_OPTIONS);
+#else
   std::list<std::string> args;
+#endif
+
   for (int i = 1; i < argc; i++) {
-    args.push_back(argv[i]);
+    std::string opt(argv[i]);
+#ifdef PIPY_DEFAULT_OPTIONS
+    if (opt == "--pipy") {
+      args.clear();
+      continue;
+    }
+#endif
+    args.push_back(opt);
   }
+
   parse(args);
 }
 

src/main.cpp

@@ -92,6 +92,10 @@ static void show_version() {
 #else
   std::cout << "Builtin Codebases: " << "No" << std::endl;
 #endif
+
+#ifdef PIPY_DEFAULT_OPTIONS
+  std::cout << "Default Options  : " << PIPY_DEFAULT_OPTIONS << std::endl;
+#endif
 }
 
 //